./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount25_file-50.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc 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_2986bdc9-0e47-4942-8478-0c41fa9d8a22/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2986bdc9-0e47-4942-8478-0c41fa9d8a22/bin/utaipan-verify-nQ1chXbOIh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2986bdc9-0e47-4942-8478-0c41fa9d8a22/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2986bdc9-0e47-4942-8478-0c41fa9d8a22/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount25_file-50.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2986bdc9-0e47-4942-8478-0c41fa9d8a22/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2986bdc9-0e47-4942-8478-0c41fa9d8a22/bin/utaipan-verify-nQ1chXbOIh --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 fb6084b1d47e624872609ebdc1d7596105f0fe52752c1031b16d65d48dd2a5c7 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 13:25:16,774 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 13:25:16,835 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2986bdc9-0e47-4942-8478-0c41fa9d8a22/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-12-02 13:25:16,840 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 13:25:16,841 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 13:25:16,863 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 13:25:16,863 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 13:25:16,864 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 13:25:16,864 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 13:25:16,865 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 13:25:16,865 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 13:25:16,866 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 13:25:16,867 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 13:25:16,867 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 13:25:16,867 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 13:25:16,868 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 13:25:16,869 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 13:25:16,869 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 13:25:16,869 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 13:25:16,870 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 13:25:16,871 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 13:25:16,872 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 13:25:16,873 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 13:25:16,874 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 13:25:16,874 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 13:25:16,874 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 13:25:16,875 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 13:25:16,875 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 13:25:16,876 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 13:25:16,876 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 13:25:16,876 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 13:25:16,877 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 13:25:16,877 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 13:25:16,878 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 13:25:16,878 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 13:25:16,879 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 13:25:16,879 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 13:25:16,879 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 13:25:16,880 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 13:25:16,880 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 13:25:16,880 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 13:25:16,881 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 13:25:16,881 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 13:25:16,881 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 13:25:16,881 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 13:25:16,882 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 13:25:16,882 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 13:25:16,882 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_2986bdc9-0e47-4942-8478-0c41fa9d8a22/bin/utaipan-verify-nQ1chXbOIh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2986bdc9-0e47-4942-8478-0c41fa9d8a22/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fb6084b1d47e624872609ebdc1d7596105f0fe52752c1031b16d65d48dd2a5c7 [2023-12-02 13:25:17,103 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 13:25:17,124 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 13:25:17,127 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 13:25:17,128 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 13:25:17,129 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 13:25:17,130 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2986bdc9-0e47-4942-8478-0c41fa9d8a22/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount25_file-50.i [2023-12-02 13:25:19,824 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 13:25:19,990 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 13:25:19,990 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2986bdc9-0e47-4942-8478-0c41fa9d8a22/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount25_file-50.i [2023-12-02 13:25:19,997 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2986bdc9-0e47-4942-8478-0c41fa9d8a22/bin/utaipan-verify-nQ1chXbOIh/data/606f36b77/faf4d178e92c477da3e2b07bb881bae3/FLAGb9b1201da [2023-12-02 13:25:20,008 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2986bdc9-0e47-4942-8478-0c41fa9d8a22/bin/utaipan-verify-nQ1chXbOIh/data/606f36b77/faf4d178e92c477da3e2b07bb881bae3 [2023-12-02 13:25:20,010 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 13:25:20,011 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 13:25:20,012 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 13:25:20,012 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 13:25:20,016 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 13:25:20,016 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 01:25:20" (1/1) ... [2023-12-02 13:25:20,017 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3956eb60 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:25:20, skipping insertion in model container [2023-12-02 13:25:20,017 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 01:25:20" (1/1) ... [2023-12-02 13:25:20,042 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 13:25:20,182 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_2986bdc9-0e47-4942-8478-0c41fa9d8a22/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount25_file-50.i[915,928] [2023-12-02 13:25:20,218 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 13:25:20,229 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 13:25:20,242 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_2986bdc9-0e47-4942-8478-0c41fa9d8a22/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount25_file-50.i[915,928] [2023-12-02 13:25:20,260 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 13:25:20,273 INFO L206 MainTranslator]: Completed translation [2023-12-02 13:25:20,273 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:25:20 WrapperNode [2023-12-02 13:25:20,274 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 13:25:20,275 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 13:25:20,275 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 13:25:20,275 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 13:25:20,281 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:25:20" (1/1) ... [2023-12-02 13:25:20,288 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:25:20" (1/1) ... [2023-12-02 13:25:20,311 INFO L138 Inliner]: procedures = 26, calls = 29, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 116 [2023-12-02 13:25:20,311 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 13:25:20,312 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 13:25:20,312 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 13:25:20,312 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 13:25:20,319 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:25:20" (1/1) ... [2023-12-02 13:25:20,319 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:25:20" (1/1) ... [2023-12-02 13:25:20,321 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:25:20" (1/1) ... [2023-12-02 13:25:20,322 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:25:20" (1/1) ... [2023-12-02 13:25:20,328 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:25:20" (1/1) ... [2023-12-02 13:25:20,331 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:25:20" (1/1) ... [2023-12-02 13:25:20,333 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:25:20" (1/1) ... [2023-12-02 13:25:20,334 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:25:20" (1/1) ... [2023-12-02 13:25:20,337 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 13:25:20,338 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 13:25:20,339 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 13:25:20,339 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 13:25:20,339 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:25:20" (1/1) ... [2023-12-02 13:25:20,345 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 13:25:20,358 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2986bdc9-0e47-4942-8478-0c41fa9d8a22/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:25:20,369 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2986bdc9-0e47-4942-8478-0c41fa9d8a22/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 13:25:20,371 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2986bdc9-0e47-4942-8478-0c41fa9d8a22/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 13:25:20,401 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 13:25:20,402 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-02 13:25:20,402 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-02 13:25:20,402 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-02 13:25:20,402 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 13:25:20,402 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 13:25:20,475 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 13:25:20,477 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 13:25:20,667 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 13:25:20,767 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 13:25:20,767 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-02 13:25:20,768 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 01:25:20 BoogieIcfgContainer [2023-12-02 13:25:20,769 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 13:25:20,772 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 13:25:20,772 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 13:25:20,775 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 13:25:20,775 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 01:25:20" (1/3) ... [2023-12-02 13:25:20,776 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d3e4f68 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 01:25:20, skipping insertion in model container [2023-12-02 13:25:20,776 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:25:20" (2/3) ... [2023-12-02 13:25:20,776 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d3e4f68 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 01:25:20, skipping insertion in model container [2023-12-02 13:25:20,776 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 01:25:20" (3/3) ... [2023-12-02 13:25:20,778 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount25_file-50.i [2023-12-02 13:25:20,797 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 13:25:20,797 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-02 13:25:20,845 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 13:25:20,852 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;@4d021ea5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 13:25:20,852 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-02 13:25:20,856 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) [2023-12-02 13:25:20,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-12-02 13:25:20,865 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:25:20,865 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] [2023-12-02 13:25:20,866 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 13:25:20,870 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:25:20,870 INFO L85 PathProgramCache]: Analyzing trace with hash 2043802362, now seen corresponding path program 1 times [2023-12-02 13:25:20,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:25:20,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [457140550] [2023-12-02 13:25:20,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:25:20,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:25:21,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-02 13:25:21,118 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-12-02 13:25:21,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-02 13:25:21,263 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-12-02 13:25:21,265 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-12-02 13:25:21,267 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-02 13:25:21,269 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-02 13:25:21,273 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-12-02 13:25:21,278 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-12-02 13:25:21,333 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 01:25:21 BoogieIcfgContainer [2023-12-02 13:25:21,333 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-02 13:25:21,334 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-12-02 13:25:21,334 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-12-02 13:25:21,334 INFO L274 PluginConnector]: Witness Printer initialized [2023-12-02 13:25:21,335 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 01:25:20" (3/4) ... [2023-12-02 13:25:21,337 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-12-02 13:25:21,349 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-12-02 13:25:21,354 INFO L158 Benchmark]: Toolchain (without parser) took 1343.19ms. Allocated memory is still 174.1MB. Free memory was 126.7MB in the beginning and 142.3MB in the end (delta: -15.6MB). Peak memory consumption was 81.7MB. Max. memory is 16.1GB. [2023-12-02 13:25:21,355 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 125.8MB. Free memory was 71.4MB in the beginning and 71.3MB in the end (delta: 117.5kB). There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 13:25:21,355 INFO L158 Benchmark]: CACSL2BoogieTranslator took 262.30ms. Allocated memory is still 174.1MB. Free memory was 126.7MB in the beginning and 114.7MB in the end (delta: 12.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-12-02 13:25:21,356 INFO L158 Benchmark]: Boogie Procedure Inliner took 36.86ms. Allocated memory is still 174.1MB. Free memory was 114.7MB in the beginning and 112.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-12-02 13:25:21,357 INFO L158 Benchmark]: Boogie Preprocessor took 25.68ms. Allocated memory is still 174.1MB. Free memory was 112.0MB in the beginning and 110.5MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-12-02 13:25:21,357 INFO L158 Benchmark]: RCFGBuilder took 430.39ms. Allocated memory is still 174.1MB. Free memory was 110.5MB in the beginning and 86.8MB in the end (delta: 23.6MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2023-12-02 13:25:21,358 INFO L158 Benchmark]: TraceAbstraction took 561.65ms. Allocated memory is still 174.1MB. Free memory was 86.1MB in the beginning and 53.3MB in the end (delta: 32.8MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. [2023-12-02 13:25:21,359 INFO L158 Benchmark]: Witness Printer took 19.14ms. Allocated memory is still 174.1MB. Free memory was 53.3MB in the beginning and 142.3MB in the end (delta: -89.0MB). Peak memory consumption was 8.3MB. Max. memory is 16.1GB. [2023-12-02 13:25:21,362 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 125.8MB. Free memory was 71.4MB in the beginning and 71.3MB in the end (delta: 117.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 262.30ms. Allocated memory is still 174.1MB. Free memory was 126.7MB in the beginning and 114.7MB in the end (delta: 12.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 36.86ms. Allocated memory is still 174.1MB. Free memory was 114.7MB in the beginning and 112.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 25.68ms. Allocated memory is still 174.1MB. Free memory was 112.0MB in the beginning and 110.5MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 430.39ms. Allocated memory is still 174.1MB. Free memory was 110.5MB in the beginning and 86.8MB in the end (delta: 23.6MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * TraceAbstraction took 561.65ms. Allocated memory is still 174.1MB. Free memory was 86.1MB in the beginning and 53.3MB in the end (delta: 32.8MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. * Witness Printer took 19.14ms. Allocated memory is still 174.1MB. Free memory was 53.3MB in the beginning and 142.3MB in the end (delta: -89.0MB). Peak memory consumption was 8.3MB. 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 40. Possible FailurePath: [L21] unsigned char isInitial = 0; [L22] unsigned char var_1_1 = 1; [L23] double var_1_2 = 8.875; [L24] double var_1_3 = 63.5; [L25] double var_1_4 = 16.6; [L26] double var_1_5 = 127.8; [L27] unsigned char var_1_6 = 0; [L28] unsigned char var_1_7 = 0; [L29] unsigned char var_1_8 = 1; [L30] signed short int var_1_9 = 256; [L31] signed short int var_1_10 = 10000; [L32] signed short int var_1_11 = 4; [L33] signed short int var_1_12 = -32; [L34] signed long int var_1_13 = 32; [L35] signed short int var_1_14 = 32; [L36] signed long int last_1_var_1_13 = 32; [L104] isInitial = 1 [L105] FCALL initially() [L106] COND TRUE 1 [L107] CALL updateLastVariables() [L97] last_1_var_1_13 = var_1_13 [L107] RET updateLastVariables() [L108] CALL updateVariables() [L69] var_1_2 = __VERIFIER_nondet_double() [L70] CALL assume_abort_if_not((var_1_2 >= -922337.2036854776000e+13F && var_1_2 <= -1.0e-20F) || (var_1_2 <= 9223372.036854776000e+12F && var_1_2 >= 1.0e-20F )) VAL [\old(cond)=1, isInitial=1, last_1_var_1_13=32, var_1_10=10000, var_1_11=4, var_1_12=-32, var_1_13=32, var_1_14=32, var_1_1=1, var_1_3=127/2, var_1_4=83/5, var_1_5=639/5, var_1_6=0, var_1_7=0, var_1_8=1, var_1_9=256] [L20] COND FALSE !(!cond) [L70] RET assume_abort_if_not((var_1_2 >= -922337.2036854776000e+13F && var_1_2 <= -1.0e-20F) || (var_1_2 <= 9223372.036854776000e+12F && var_1_2 >= 1.0e-20F )) VAL [isInitial=1, last_1_var_1_13=32, var_1_10=10000, var_1_11=4, var_1_12=-32, var_1_13=32, var_1_14=32, var_1_1=1, var_1_3=127/2, var_1_4=83/5, var_1_5=639/5, var_1_6=0, var_1_7=0, var_1_8=1, var_1_9=256] [L71] var_1_3 = __VERIFIER_nondet_double() [L72] CALL assume_abort_if_not((var_1_3 >= -922337.2036854776000e+13F && var_1_3 <= -1.0e-20F) || (var_1_3 <= 9223372.036854776000e+12F && var_1_3 >= 1.0e-20F )) VAL [\old(cond)=1, isInitial=1, last_1_var_1_13=32, var_1_10=10000, var_1_11=4, var_1_12=-32, var_1_13=32, var_1_14=32, var_1_1=1, var_1_4=83/5, var_1_5=639/5, var_1_6=0, var_1_7=0, var_1_8=1, var_1_9=256] [L20] COND FALSE !(!cond) [L72] RET assume_abort_if_not((var_1_3 >= -922337.2036854776000e+13F && var_1_3 <= -1.0e-20F) || (var_1_3 <= 9223372.036854776000e+12F && var_1_3 >= 1.0e-20F )) VAL [isInitial=1, last_1_var_1_13=32, var_1_10=10000, var_1_11=4, var_1_12=-32, var_1_13=32, var_1_14=32, var_1_1=1, var_1_4=83/5, var_1_5=639/5, var_1_6=0, var_1_7=0, var_1_8=1, var_1_9=256] [L73] var_1_4 = __VERIFIER_nondet_double() [L74] CALL assume_abort_if_not((var_1_4 >= 0.0F && var_1_4 <= -1.0e-20F) || (var_1_4 <= 9223372.036854776000e+12F && var_1_4 >= 1.0e-20F )) VAL [\old(cond)=1, isInitial=1, last_1_var_1_13=32, var_1_10=10000, var_1_11=4, var_1_12=-32, var_1_13=32, var_1_14=32, var_1_1=1, var_1_5=639/5, var_1_6=0, var_1_7=0, var_1_8=1, var_1_9=256] [L20] COND FALSE !(!cond) [L74] RET assume_abort_if_not((var_1_4 >= 0.0F && var_1_4 <= -1.0e-20F) || (var_1_4 <= 9223372.036854776000e+12F && var_1_4 >= 1.0e-20F )) VAL [isInitial=1, last_1_var_1_13=32, var_1_10=10000, var_1_11=4, var_1_12=-32, var_1_13=32, var_1_14=32, var_1_1=1, var_1_5=639/5, var_1_6=0, var_1_7=0, var_1_8=1, var_1_9=256] [L75] var_1_5 = __VERIFIER_nondet_double() [L76] CALL assume_abort_if_not((var_1_5 >= 0.0F && var_1_5 <= -1.0e-20F) || (var_1_5 <= 9223372.036854776000e+12F && var_1_5 >= 1.0e-20F )) VAL [\old(cond)=1, isInitial=1, last_1_var_1_13=32, var_1_10=10000, var_1_11=4, var_1_12=-32, var_1_13=32, var_1_14=32, var_1_1=1, var_1_6=0, var_1_7=0, var_1_8=1, var_1_9=256] [L20] COND FALSE !(!cond) [L76] RET assume_abort_if_not((var_1_5 >= 0.0F && var_1_5 <= -1.0e-20F) || (var_1_5 <= 9223372.036854776000e+12F && var_1_5 >= 1.0e-20F )) VAL [isInitial=1, last_1_var_1_13=32, var_1_10=10000, var_1_11=4, var_1_12=-32, var_1_13=32, var_1_14=32, var_1_1=1, var_1_6=0, var_1_7=0, var_1_8=1, var_1_9=256] [L77] var_1_6 = __VERIFIER_nondet_uchar() [L78] CALL assume_abort_if_not(var_1_6 >= 0) VAL [\old(cond)=1, isInitial=1, last_1_var_1_13=32, var_1_10=10000, var_1_11=4, var_1_12=-32, var_1_13=32, var_1_14=32, var_1_1=1, var_1_7=0, var_1_8=1, var_1_9=256] [L20] COND FALSE !(!cond) [L78] RET assume_abort_if_not(var_1_6 >= 0) VAL [isInitial=1, last_1_var_1_13=32, var_1_10=10000, var_1_11=4, var_1_12=-32, var_1_13=32, var_1_14=32, var_1_1=1, var_1_7=0, var_1_8=1, var_1_9=256] [L79] CALL assume_abort_if_not(var_1_6 <= 1) VAL [\old(cond)=1, isInitial=1, last_1_var_1_13=32, var_1_10=10000, var_1_11=4, var_1_12=-32, var_1_13=32, var_1_14=32, var_1_1=1, var_1_6=0, var_1_7=0, var_1_8=1, var_1_9=256] [L20] COND FALSE !(!cond) [L79] RET assume_abort_if_not(var_1_6 <= 1) VAL [isInitial=1, last_1_var_1_13=32, var_1_10=10000, var_1_11=4, var_1_12=-32, var_1_13=32, var_1_14=32, var_1_1=1, var_1_6=0, var_1_7=0, var_1_8=1, var_1_9=256] [L80] var_1_7 = __VERIFIER_nondet_uchar() [L81] CALL assume_abort_if_not(var_1_7 >= 0) VAL [\old(cond)=1, isInitial=1, last_1_var_1_13=32, var_1_10=10000, var_1_11=4, var_1_12=-32, var_1_13=32, var_1_14=32, var_1_1=1, var_1_6=0, var_1_8=1, var_1_9=256] [L20] COND FALSE !(!cond) [L81] RET assume_abort_if_not(var_1_7 >= 0) VAL [isInitial=1, last_1_var_1_13=32, var_1_10=10000, var_1_11=4, var_1_12=-32, var_1_13=32, var_1_14=32, var_1_1=1, var_1_6=0, var_1_8=1, var_1_9=256] [L82] CALL assume_abort_if_not(var_1_7 <= 0) VAL [\old(cond)=1, isInitial=1, last_1_var_1_13=32, var_1_10=10000, var_1_11=4, var_1_12=-32, var_1_13=32, var_1_14=32, var_1_1=1, var_1_6=0, var_1_7=0, var_1_8=1, var_1_9=256] [L20] COND FALSE !(!cond) [L82] RET assume_abort_if_not(var_1_7 <= 0) VAL [isInitial=1, last_1_var_1_13=32, var_1_10=10000, var_1_11=4, var_1_12=-32, var_1_13=32, var_1_14=32, var_1_1=1, var_1_6=0, var_1_7=0, var_1_8=1, var_1_9=256] [L83] var_1_8 = __VERIFIER_nondet_uchar() [L84] CALL assume_abort_if_not(var_1_8 >= 1) VAL [\old(cond)=1, isInitial=1, last_1_var_1_13=32, var_1_10=10000, var_1_11=4, var_1_12=-32, var_1_13=32, var_1_14=32, var_1_1=1, var_1_6=0, var_1_7=0, var_1_8=1, var_1_9=256] [L20] COND FALSE !(!cond) [L84] RET assume_abort_if_not(var_1_8 >= 1) VAL [isInitial=1, last_1_var_1_13=32, var_1_10=10000, var_1_11=4, var_1_12=-32, var_1_13=32, var_1_14=32, var_1_1=1, var_1_6=0, var_1_7=0, var_1_8=1, var_1_9=256] [L85] CALL assume_abort_if_not(var_1_8 <= 1) VAL [\old(cond)=1, isInitial=1, last_1_var_1_13=32, var_1_10=10000, var_1_11=4, var_1_12=-32, var_1_13=32, var_1_14=32, var_1_1=1, var_1_6=0, var_1_7=0, var_1_8=1, var_1_9=256] [L20] COND FALSE !(!cond) [L85] RET assume_abort_if_not(var_1_8 <= 1) VAL [isInitial=1, last_1_var_1_13=32, var_1_10=10000, var_1_11=4, var_1_12=-32, var_1_13=32, var_1_14=32, var_1_1=1, var_1_6=0, var_1_7=0, var_1_8=1, var_1_9=256] [L86] var_1_10 = __VERIFIER_nondet_short() [L87] CALL assume_abort_if_not(var_1_10 >= -1) VAL [\old(cond)=1, isInitial=1, last_1_var_1_13=32, var_1_10=32766, var_1_11=4, var_1_12=-32, var_1_13=32, var_1_14=32, var_1_1=1, var_1_6=0, var_1_7=0, var_1_8=1, var_1_9=256] [L20] COND FALSE !(!cond) [L87] RET assume_abort_if_not(var_1_10 >= -1) VAL [isInitial=1, last_1_var_1_13=32, var_1_10=32766, var_1_11=4, var_1_12=-32, var_1_13=32, var_1_14=32, var_1_1=1, var_1_6=0, var_1_7=0, var_1_8=1, var_1_9=256] [L88] CALL assume_abort_if_not(var_1_10 <= 32766) VAL [\old(cond)=1, isInitial=1, last_1_var_1_13=32, var_1_10=32766, var_1_11=4, var_1_12=-32, var_1_13=32, var_1_14=32, var_1_1=1, var_1_6=0, var_1_7=0, var_1_8=1, var_1_9=256] [L20] COND FALSE !(!cond) [L88] RET assume_abort_if_not(var_1_10 <= 32766) VAL [isInitial=1, last_1_var_1_13=32, var_1_10=32766, var_1_11=4, var_1_12=-32, var_1_13=32, var_1_14=32, var_1_1=1, var_1_6=0, var_1_7=0, var_1_8=1, var_1_9=256] [L89] var_1_11 = __VERIFIER_nondet_short() [L90] CALL assume_abort_if_not(var_1_11 >= 0) VAL [\old(cond)=1, isInitial=1, last_1_var_1_13=32, var_1_10=32766, var_1_11=32766, var_1_12=-32, var_1_13=32, var_1_14=32, var_1_1=1, var_1_6=0, var_1_7=0, var_1_8=1, var_1_9=256] [L20] COND FALSE !(!cond) [L90] RET assume_abort_if_not(var_1_11 >= 0) VAL [isInitial=1, last_1_var_1_13=32, var_1_10=32766, var_1_11=32766, var_1_12=-32, var_1_13=32, var_1_14=32, var_1_1=1, var_1_6=0, var_1_7=0, var_1_8=1, var_1_9=256] [L91] CALL assume_abort_if_not(var_1_11 <= 32766) VAL [\old(cond)=1, isInitial=1, last_1_var_1_13=32, var_1_10=32766, var_1_11=32766, var_1_12=-32, var_1_13=32, var_1_14=32, var_1_1=1, var_1_6=0, var_1_7=0, var_1_8=1, var_1_9=256] [L20] COND FALSE !(!cond) [L91] RET assume_abort_if_not(var_1_11 <= 32766) VAL [isInitial=1, last_1_var_1_13=32, var_1_10=32766, var_1_11=32766, var_1_12=-32, var_1_13=32, var_1_14=32, var_1_1=1, var_1_6=0, var_1_7=0, var_1_8=1, var_1_9=256] [L92] var_1_14 = __VERIFIER_nondet_short() [L93] CALL assume_abort_if_not(var_1_14 >= 0) VAL [\old(cond)=1, isInitial=1, last_1_var_1_13=32, var_1_10=32766, var_1_11=32766, var_1_12=-32, var_1_13=32, var_1_14=0, var_1_1=1, var_1_6=0, var_1_7=0, var_1_8=1, var_1_9=256] [L20] COND FALSE !(!cond) [L93] RET assume_abort_if_not(var_1_14 >= 0) VAL [isInitial=1, last_1_var_1_13=32, var_1_10=32766, var_1_11=32766, var_1_12=-32, var_1_13=32, var_1_14=0, var_1_1=1, var_1_6=0, var_1_7=0, var_1_8=1, var_1_9=256] [L94] CALL assume_abort_if_not(var_1_14 <= 32767) VAL [\old(cond)=1, isInitial=1, last_1_var_1_13=32, var_1_10=32766, var_1_11=32766, var_1_12=-32, var_1_13=32, var_1_14=0, var_1_1=1, var_1_6=0, var_1_7=0, var_1_8=1, var_1_9=256] [L20] COND FALSE !(!cond) [L94] RET assume_abort_if_not(var_1_14 <= 32767) VAL [isInitial=1, last_1_var_1_13=32, var_1_10=32766, var_1_11=32766, var_1_12=-32, var_1_13=32, var_1_14=0, var_1_1=1, var_1_6=0, var_1_7=0, var_1_8=1, var_1_9=256] [L108] RET updateVariables() [L109] CALL step() [L40] COND FALSE !((((((var_1_2 + var_1_3)) < ((var_1_4 - var_1_5))) ? ((var_1_2 + var_1_3)) : ((var_1_4 - var_1_5)))) != 31.9) [L47] var_1_1 = var_1_7 [L49] COND FALSE !(var_1_2 > var_1_5) [L52] unsigned char stepLocal_0 = var_1_8; [L53] COND FALSE !(var_1_1 && stepLocal_0) [L56] signed short int stepLocal_2 = var_1_9; [L57] signed long int stepLocal_1 = var_1_11 - var_1_14; [L58] COND FALSE !(var_1_11 <= stepLocal_2) [L61] COND FALSE !(last_1_var_1_13 > stepLocal_1) [L64] var_1_13 = last_1_var_1_13 [L109] RET step() [L110] CALL, EXPR property() [L100-L101] return (((((((((var_1_2 + var_1_3)) < ((var_1_4 - var_1_5))) ? ((var_1_2 + var_1_3)) : ((var_1_4 - var_1_5)))) != 31.9) ? (var_1_6 ? (var_1_1 == ((unsigned char) var_1_7)) : (var_1_1 == ((unsigned char) var_1_8))) : (var_1_1 == ((unsigned char) var_1_7))) && ((var_1_2 > var_1_5) ? (var_1_9 == ((signed short int) (var_1_10 - var_1_11))) : 1)) && ((var_1_1 && var_1_8) ? (var_1_12 == ((signed short int) (var_1_11 - 1))) : 1)) && ((var_1_11 <= var_1_9) ? (var_1_13 == ((signed long int) (var_1_10 - var_1_11))) : ((last_1_var_1_13 > (var_1_11 - var_1_14)) ? (var_1_13 == ((signed long int) last_1_var_1_13)) : (var_1_13 == ((signed long int) last_1_var_1_13)))) ; [L110] RET, EXPR property() [L110] CALL __VERIFIER_assert(property()) [L19] COND TRUE !(cond) VAL [\old(cond)=0, cond=0, isInitial=1, last_1_var_1_13=32, var_1_10=32766, var_1_11=32766, var_1_12=-32, var_1_13=32, var_1_14=0, var_1_1=0, var_1_6=0, var_1_7=0, var_1_8=1, var_1_9=256] [L19] reach_error() VAL [\old(cond)=0, cond=0, isInitial=1, last_1_var_1_13=32, var_1_10=32766, var_1_11=32766, var_1_12=-32, var_1_13=32, var_1_14=0, var_1_1=0, var_1_6=0, var_1_7=0, var_1_8=1, var_1_9=256] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 35 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.4s, 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, 0.2s 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 [2023-12-02 13:25:21,383 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2986bdc9-0e47-4942-8478-0c41fa9d8a22/bin/utaipan-verify-nQ1chXbOIh/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_2986bdc9-0e47-4942-8478-0c41fa9d8a22/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2986bdc9-0e47-4942-8478-0c41fa9d8a22/bin/utaipan-verify-nQ1chXbOIh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2986bdc9-0e47-4942-8478-0c41fa9d8a22/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2986bdc9-0e47-4942-8478-0c41fa9d8a22/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount25_file-50.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2986bdc9-0e47-4942-8478-0c41fa9d8a22/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2986bdc9-0e47-4942-8478-0c41fa9d8a22/bin/utaipan-verify-nQ1chXbOIh --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 fb6084b1d47e624872609ebdc1d7596105f0fe52752c1031b16d65d48dd2a5c7 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 13:25:23,319 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 13:25:23,394 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2986bdc9-0e47-4942-8478-0c41fa9d8a22/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2023-12-02 13:25:23,400 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 13:25:23,401 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 13:25:23,429 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 13:25:23,430 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 13:25:23,430 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 13:25:23,431 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 13:25:23,432 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 13:25:23,432 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 13:25:23,433 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 13:25:23,433 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 13:25:23,434 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 13:25:23,434 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 13:25:23,435 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 13:25:23,436 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 13:25:23,436 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 13:25:23,437 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 13:25:23,437 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 13:25:23,438 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 13:25:23,438 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 13:25:23,439 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 13:25:23,439 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 13:25:23,440 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-02 13:25:23,440 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-02 13:25:23,441 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-02 13:25:23,441 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 13:25:23,441 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 13:25:23,442 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 13:25:23,442 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 13:25:23,443 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-02 13:25:23,443 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 13:25:23,443 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 13:25:23,443 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 13:25:23,444 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 13:25:23,444 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 13:25:23,444 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 13:25:23,444 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-12-02 13:25:23,445 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-02 13:25:23,445 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 13:25:23,445 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 13:25:23,445 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 13:25:23,446 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 13:25:23,446 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_2986bdc9-0e47-4942-8478-0c41fa9d8a22/bin/utaipan-verify-nQ1chXbOIh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2986bdc9-0e47-4942-8478-0c41fa9d8a22/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fb6084b1d47e624872609ebdc1d7596105f0fe52752c1031b16d65d48dd2a5c7 [2023-12-02 13:25:23,719 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 13:25:23,738 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 13:25:23,741 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 13:25:23,742 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 13:25:23,742 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 13:25:23,743 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2986bdc9-0e47-4942-8478-0c41fa9d8a22/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount25_file-50.i [2023-12-02 13:25:26,465 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 13:25:26,674 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 13:25:26,675 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2986bdc9-0e47-4942-8478-0c41fa9d8a22/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount25_file-50.i [2023-12-02 13:25:26,682 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2986bdc9-0e47-4942-8478-0c41fa9d8a22/bin/utaipan-verify-nQ1chXbOIh/data/043e580dd/3af5346cd094492c91836c4c21ef4963/FLAGad12a2d97 [2023-12-02 13:25:26,695 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2986bdc9-0e47-4942-8478-0c41fa9d8a22/bin/utaipan-verify-nQ1chXbOIh/data/043e580dd/3af5346cd094492c91836c4c21ef4963 [2023-12-02 13:25:26,697 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 13:25:26,698 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 13:25:26,699 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 13:25:26,699 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 13:25:26,703 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 13:25:26,704 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 01:25:26" (1/1) ... [2023-12-02 13:25:26,705 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a613ad9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:25:26, skipping insertion in model container [2023-12-02 13:25:26,705 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 01:25:26" (1/1) ... [2023-12-02 13:25:26,729 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 13:25:26,856 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_2986bdc9-0e47-4942-8478-0c41fa9d8a22/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount25_file-50.i[915,928] [2023-12-02 13:25:26,895 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 13:25:26,910 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 13:25:26,921 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_2986bdc9-0e47-4942-8478-0c41fa9d8a22/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount25_file-50.i[915,928] [2023-12-02 13:25:26,942 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 13:25:26,957 INFO L206 MainTranslator]: Completed translation [2023-12-02 13:25:26,958 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:25:26 WrapperNode [2023-12-02 13:25:26,958 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 13:25:26,959 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 13:25:26,959 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 13:25:26,959 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 13:25:26,965 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:25:26" (1/1) ... [2023-12-02 13:25:26,976 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:25:26" (1/1) ... [2023-12-02 13:25:27,001 INFO L138 Inliner]: procedures = 27, calls = 29, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 113 [2023-12-02 13:25:27,002 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 13:25:27,003 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 13:25:27,003 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 13:25:27,003 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 13:25:27,011 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:25:26" (1/1) ... [2023-12-02 13:25:27,012 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:25:26" (1/1) ... [2023-12-02 13:25:27,016 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:25:26" (1/1) ... [2023-12-02 13:25:27,016 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:25:26" (1/1) ... [2023-12-02 13:25:27,026 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:25:26" (1/1) ... [2023-12-02 13:25:27,030 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:25:26" (1/1) ... [2023-12-02 13:25:27,033 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:25:26" (1/1) ... [2023-12-02 13:25:27,035 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:25:26" (1/1) ... [2023-12-02 13:25:27,039 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 13:25:27,040 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 13:25:27,040 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 13:25:27,040 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 13:25:27,041 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:25:26" (1/1) ... [2023-12-02 13:25:27,047 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 13:25:27,056 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2986bdc9-0e47-4942-8478-0c41fa9d8a22/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:25:27,067 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2986bdc9-0e47-4942-8478-0c41fa9d8a22/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 13:25:27,075 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2986bdc9-0e47-4942-8478-0c41fa9d8a22/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 13:25:27,104 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 13:25:27,104 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-12-02 13:25:27,104 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-02 13:25:27,104 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-02 13:25:27,104 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 13:25:27,116 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 13:25:27,225 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 13:25:27,227 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 13:25:29,581 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 13:25:29,628 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 13:25:29,628 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-02 13:25:29,629 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 01:25:29 BoogieIcfgContainer [2023-12-02 13:25:29,629 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 13:25:29,632 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 13:25:29,632 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 13:25:29,635 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 13:25:29,635 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 01:25:26" (1/3) ... [2023-12-02 13:25:29,636 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28ffdf3b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 01:25:29, skipping insertion in model container [2023-12-02 13:25:29,636 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:25:26" (2/3) ... [2023-12-02 13:25:29,637 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28ffdf3b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 01:25:29, skipping insertion in model container [2023-12-02 13:25:29,637 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 01:25:29" (3/3) ... [2023-12-02 13:25:29,639 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount25_file-50.i [2023-12-02 13:25:29,657 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 13:25:29,657 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-02 13:25:29,701 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 13:25:29,706 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;@5f9defcd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 13:25:29,706 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-02 13:25:29,710 INFO L276 IsEmpty]: Start isEmpty. Operand has 47 states, 28 states have (on average 1.3928571428571428) internal successors, (39), 29 states have internal predecessors, (39), 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) [2023-12-02 13:25:29,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-12-02 13:25:29,720 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:25:29,721 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] [2023-12-02 13:25:29,721 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 13:25:29,725 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:25:29,725 INFO L85 PathProgramCache]: Analyzing trace with hash 1695088588, now seen corresponding path program 1 times [2023-12-02 13:25:29,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 13:25:29,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1121781680] [2023-12-02 13:25:29,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:25:29,737 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 [2023-12-02 13:25:29,737 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2986bdc9-0e47-4942-8478-0c41fa9d8a22/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 13:25:29,739 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2986bdc9-0e47-4942-8478-0c41fa9d8a22/bin/utaipan-verify-nQ1chXbOIh/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) [2023-12-02 13:25:29,740 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2986bdc9-0e47-4942-8478-0c41fa9d8a22/bin/utaipan-verify-nQ1chXbOIh/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 [2023-12-02 13:25:30,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:25:30,015 INFO L262 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-02 13:25:30,023 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:25:30,077 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 230 proven. 0 refuted. 0 times theorem prover too weak. 250 trivial. 0 not checked. [2023-12-02 13:25:30,077 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 13:25:30,078 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 13:25:30,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1121781680] [2023-12-02 13:25:30,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1121781680] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:25:30,079 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 13:25:30,079 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 13:25:30,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272216339] [2023-12-02 13:25:30,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:25:30,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-02 13:25:30,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 13:25:30,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-02 13:25:30,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-02 13:25:30,117 INFO L87 Difference]: Start difference. First operand has 47 states, 28 states have (on average 1.3928571428571428) internal successors, (39), 29 states have internal predecessors, (39), 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 2 states, 2 states have (on average 14.0) internal successors, (28), 2 states have internal predecessors, (28), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2023-12-02 13:25:30,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:25:30,665 INFO L93 Difference]: Finished difference Result 91 states and 156 transitions. [2023-12-02 13:25:30,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-02 13:25:30,680 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 14.0) internal successors, (28), 2 states have internal predecessors, (28), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 101 [2023-12-02 13:25:30,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:25:30,686 INFO L225 Difference]: With dead ends: 91 [2023-12-02 13:25:30,687 INFO L226 Difference]: Without dead ends: 45 [2023-12-02 13:25:30,689 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-02 13:25:30,692 INFO L413 NwaCegarLoop]: 63 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-02 13:25:30,693 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 63 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-02 13:25:30,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2023-12-02 13:25:30,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2023-12-02 13:25:30,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 27 states have (on average 1.2592592592592593) internal successors, (34), 27 states have internal predecessors, (34), 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) [2023-12-02 13:25:30,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 66 transitions. [2023-12-02 13:25:30,735 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 66 transitions. Word has length 101 [2023-12-02 13:25:30,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:25:30,735 INFO L495 AbstractCegarLoop]: Abstraction has 45 states and 66 transitions. [2023-12-02 13:25:30,736 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 14.0) internal successors, (28), 2 states have internal predecessors, (28), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2023-12-02 13:25:30,736 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 66 transitions. [2023-12-02 13:25:30,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-12-02 13:25:30,740 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:25:30,740 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] [2023-12-02 13:25:30,747 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2986bdc9-0e47-4942-8478-0c41fa9d8a22/bin/utaipan-verify-nQ1chXbOIh/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 [2023-12-02 13:25:30,941 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2986bdc9-0e47-4942-8478-0c41fa9d8a22/bin/utaipan-verify-nQ1chXbOIh/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 [2023-12-02 13:25:30,941 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 13:25:30,942 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:25:30,942 INFO L85 PathProgramCache]: Analyzing trace with hash 810500308, now seen corresponding path program 1 times [2023-12-02 13:25:30,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 13:25:30,943 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [345513084] [2023-12-02 13:25:30,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:25:30,943 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 [2023-12-02 13:25:30,944 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2986bdc9-0e47-4942-8478-0c41fa9d8a22/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 13:25:30,945 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2986bdc9-0e47-4942-8478-0c41fa9d8a22/bin/utaipan-verify-nQ1chXbOIh/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) [2023-12-02 13:25:30,946 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2986bdc9-0e47-4942-8478-0c41fa9d8a22/bin/utaipan-verify-nQ1chXbOIh/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 [2023-12-02 13:25:31,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:25:31,212 INFO L262 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-02 13:25:31,220 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:25:31,460 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 253 proven. 24 refuted. 0 times theorem prover too weak. 203 trivial. 0 not checked. [2023-12-02 13:25:31,461 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 13:25:31,702 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 21 proven. 24 refuted. 0 times theorem prover too weak. 435 trivial. 0 not checked. [2023-12-02 13:25:31,703 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 13:25:31,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [345513084] [2023-12-02 13:25:31,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [345513084] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 13:25:31,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [384750664] [2023-12-02 13:25:31,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:25:31,704 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 13:25:31,704 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2986bdc9-0e47-4942-8478-0c41fa9d8a22/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 13:25:31,707 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2986bdc9-0e47-4942-8478-0c41fa9d8a22/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 13:25:31,710 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2986bdc9-0e47-4942-8478-0c41fa9d8a22/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2023-12-02 13:25:32,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:25:32,357 INFO L262 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-02 13:25:32,361 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:25:32,519 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 253 proven. 24 refuted. 0 times theorem prover too weak. 203 trivial. 0 not checked. [2023-12-02 13:25:32,519 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 13:25:32,712 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 21 proven. 24 refuted. 0 times theorem prover too weak. 435 trivial. 0 not checked. [2023-12-02 13:25:32,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [384750664] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 13:25:32,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1271978310] [2023-12-02 13:25:32,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:25:32,713 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:25:32,714 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2986bdc9-0e47-4942-8478-0c41fa9d8a22/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:25:32,715 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2986bdc9-0e47-4942-8478-0c41fa9d8a22/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 13:25:32,721 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2986bdc9-0e47-4942-8478-0c41fa9d8a22/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-02 13:25:32,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:25:32,912 INFO L262 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-02 13:25:32,917 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:25:33,071 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 253 proven. 24 refuted. 0 times theorem prover too weak. 203 trivial. 0 not checked. [2023-12-02 13:25:33,071 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 13:25:33,226 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 21 proven. 24 refuted. 0 times theorem prover too weak. 435 trivial. 0 not checked. [2023-12-02 13:25:33,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1271978310] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 13:25:33,226 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2023-12-02 13:25:33,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6, 6, 6, 6] total 8 [2023-12-02 13:25:33,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765419441] [2023-12-02 13:25:33,228 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2023-12-02 13:25:33,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-02 13:25:33,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 13:25:33,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-02 13:25:33,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-12-02 13:25:33,232 INFO L87 Difference]: Start difference. First operand 45 states and 66 transitions. Second operand has 8 states, 8 states have (on average 4.125) internal successors, (33), 8 states have internal predecessors, (33), 2 states have call successors, (24), 2 states have call predecessors, (24), 4 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2023-12-02 13:25:36,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:25:36,235 INFO L93 Difference]: Finished difference Result 149 states and 210 transitions. [2023-12-02 13:25:36,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-02 13:25:36,235 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.125) internal successors, (33), 8 states have internal predecessors, (33), 2 states have call successors, (24), 2 states have call predecessors, (24), 4 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 101 [2023-12-02 13:25:36,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:25:36,239 INFO L225 Difference]: With dead ends: 149 [2023-12-02 13:25:36,239 INFO L226 Difference]: Without dead ends: 105 [2023-12-02 13:25:36,240 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 612 GetRequests, 592 SyntacticMatches, 3 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=112, Invalid=230, Unknown=0, NotChecked=0, Total=342 [2023-12-02 13:25:36,241 INFO L413 NwaCegarLoop]: 73 mSDtfsCounter, 86 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 227 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 186 SdHoareTripleChecker+Invalid, 262 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 227 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-12-02 13:25:36,242 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 186 Invalid, 262 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 227 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-12-02 13:25:36,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2023-12-02 13:25:36,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 52. [2023-12-02 13:25:36,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 33 states have (on average 1.2424242424242424) internal successors, (41), 33 states have internal predecessors, (41), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2023-12-02 13:25:36,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 73 transitions. [2023-12-02 13:25:36,260 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 73 transitions. Word has length 101 [2023-12-02 13:25:36,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:25:36,261 INFO L495 AbstractCegarLoop]: Abstraction has 52 states and 73 transitions. [2023-12-02 13:25:36,261 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.125) internal successors, (33), 8 states have internal predecessors, (33), 2 states have call successors, (24), 2 states have call predecessors, (24), 4 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2023-12-02 13:25:36,261 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 73 transitions. [2023-12-02 13:25:36,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-12-02 13:25:36,263 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:25:36,264 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] [2023-12-02 13:25:36,271 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2986bdc9-0e47-4942-8478-0c41fa9d8a22/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2023-12-02 13:25:36,473 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2986bdc9-0e47-4942-8478-0c41fa9d8a22/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-12-02 13:25:36,669 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2986bdc9-0e47-4942-8478-0c41fa9d8a22/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (4)] Ended with exit code 0 [2023-12-02 13:25:36,864 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2986bdc9-0e47-4942-8478-0c41fa9d8a22/bin/utaipan-verify-nQ1chXbOIh/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 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2986bdc9-0e47-4942-8478-0c41fa9d8a22/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2986bdc9-0e47-4942-8478-0c41fa9d8a22/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt [2023-12-02 13:25:36,865 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 13:25:36,865 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:25:36,866 INFO L85 PathProgramCache]: Analyzing trace with hash 867758610, now seen corresponding path program 1 times [2023-12-02 13:25:36,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 13:25:36,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2085934085] [2023-12-02 13:25:36,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:25:36,867 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 [2023-12-02 13:25:36,867 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2986bdc9-0e47-4942-8478-0c41fa9d8a22/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 13:25:36,868 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2986bdc9-0e47-4942-8478-0c41fa9d8a22/bin/utaipan-verify-nQ1chXbOIh/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) [2023-12-02 13:25:36,869 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2986bdc9-0e47-4942-8478-0c41fa9d8a22/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-12-02 13:25:37,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:25:37,232 INFO L262 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 20 conjunts are in the unsatisfiable core [2023-12-02 13:25:37,237 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:26:02,173 WARN L293 SmtUtils]: Spent 6.64s on a formula simplification that was a NOOP. DAG size: 30 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 13:26:29,569 WARN L293 SmtUtils]: Spent 7.73s on a formula simplification that was a NOOP. DAG size: 35 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 13:27:19,786 WARN L293 SmtUtils]: Spent 8.69s on a formula simplification that was a NOOP. DAG size: 37 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 13:27:57,512 WARN L293 SmtUtils]: Spent 9.38s on a formula simplification that was a NOOP. DAG size: 39 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 13:37:07,144 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 331 proven. 39 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2023-12-02 13:37:07,144 INFO L327 TraceCheckSpWp]: Computing backward predicates...