./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_floatingpointinfluence_no-floats_file-29.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54129b62-f486-43d3-bc95-bd5f6116b491/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54129b62-f486-43d3-bc95-bd5f6116b491/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_54129b62-f486-43d3-bc95-bd5f6116b491/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54129b62-f486-43d3-bc95-bd5f6116b491/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_floatingpointinfluence_no-floats_file-29.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54129b62-f486-43d3-bc95-bd5f6116b491/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_54129b62-f486-43d3-bc95-bd5f6116b491/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 9895c65ddd0a757601efacae1236f009f563ee992f30a3895b216cc56df077ed --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 17:27:35,672 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 17:27:35,737 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54129b62-f486-43d3-bc95-bd5f6116b491/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-12-02 17:27:35,742 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 17:27:35,742 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 17:27:35,766 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 17:27:35,767 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 17:27:35,768 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 17:27:35,768 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 17:27:35,769 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 17:27:35,769 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 17:27:35,770 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 17:27:35,770 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 17:27:35,771 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 17:27:35,771 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 17:27:35,772 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 17:27:35,773 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 17:27:35,773 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 17:27:35,774 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 17:27:35,774 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 17:27:35,775 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 17:27:35,776 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 17:27:35,776 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 17:27:35,777 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 17:27:35,777 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 17:27:35,778 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 17:27:35,778 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 17:27:35,779 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 17:27:35,779 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 17:27:35,779 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 17:27:35,780 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 17:27:35,780 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 17:27:35,780 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 17:27:35,781 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 17:27:35,781 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 17:27:35,781 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 17:27:35,781 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 17:27:35,782 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 17:27:35,782 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 17:27:35,782 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 17:27:35,782 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 17:27:35,783 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 17:27:35,783 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 17:27:35,783 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 17:27:35,783 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 17:27:35,783 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 17:27:35,784 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 17:27:35,784 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_54129b62-f486-43d3-bc95-bd5f6116b491/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54129b62-f486-43d3-bc95-bd5f6116b491/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9895c65ddd0a757601efacae1236f009f563ee992f30a3895b216cc56df077ed [2023-12-02 17:27:36,000 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 17:27:36,018 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 17:27:36,021 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 17:27:36,022 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 17:27:36,022 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 17:27:36,024 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54129b62-f486-43d3-bc95-bd5f6116b491/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/hardness-nfm22/hardness_floatingpointinfluence_no-floats_file-29.i [2023-12-02 17:27:38,713 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 17:27:38,883 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 17:27:38,884 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54129b62-f486-43d3-bc95-bd5f6116b491/sv-benchmarks/c/hardness-nfm22/hardness_floatingpointinfluence_no-floats_file-29.i [2023-12-02 17:27:38,891 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54129b62-f486-43d3-bc95-bd5f6116b491/bin/utaipan-verify-nQ1chXbOIh/data/d02069353/451fe6f8c6694a56a0bb6c6729f44f81/FLAGf530fc385 [2023-12-02 17:27:38,902 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54129b62-f486-43d3-bc95-bd5f6116b491/bin/utaipan-verify-nQ1chXbOIh/data/d02069353/451fe6f8c6694a56a0bb6c6729f44f81 [2023-12-02 17:27:38,904 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 17:27:38,905 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 17:27:38,906 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 17:27:38,906 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 17:27:38,911 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 17:27:38,912 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 05:27:38" (1/1) ... [2023-12-02 17:27:38,913 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2af15670 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:27:38, skipping insertion in model container [2023-12-02 17:27:38,913 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 05:27:38" (1/1) ... [2023-12-02 17:27:38,938 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 17:27:39,071 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_54129b62-f486-43d3-bc95-bd5f6116b491/sv-benchmarks/c/hardness-nfm22/hardness_floatingpointinfluence_no-floats_file-29.i[916,929] [2023-12-02 17:27:39,105 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 17:27:39,115 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 17:27:39,126 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_54129b62-f486-43d3-bc95-bd5f6116b491/sv-benchmarks/c/hardness-nfm22/hardness_floatingpointinfluence_no-floats_file-29.i[916,929] [2023-12-02 17:27:39,139 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 17:27:39,154 INFO L206 MainTranslator]: Completed translation [2023-12-02 17:27:39,154 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:27:39 WrapperNode [2023-12-02 17:27:39,155 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 17:27:39,156 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 17:27:39,156 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 17:27:39,156 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 17:27:39,162 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:27:39" (1/1) ... [2023-12-02 17:27:39,169 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:27:39" (1/1) ... [2023-12-02 17:27:39,190 INFO L138 Inliner]: procedures = 26, calls = 21, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 82 [2023-12-02 17:27:39,190 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 17:27:39,191 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 17:27:39,191 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 17:27:39,191 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 17:27:39,198 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:27:39" (1/1) ... [2023-12-02 17:27:39,198 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:27:39" (1/1) ... [2023-12-02 17:27:39,200 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:27:39" (1/1) ... [2023-12-02 17:27:39,200 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:27:39" (1/1) ... [2023-12-02 17:27:39,206 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:27:39" (1/1) ... [2023-12-02 17:27:39,209 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:27:39" (1/1) ... [2023-12-02 17:27:39,211 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:27:39" (1/1) ... [2023-12-02 17:27:39,212 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:27:39" (1/1) ... [2023-12-02 17:27:39,214 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 17:27:39,215 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 17:27:39,215 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 17:27:39,215 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 17:27:39,216 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:27:39" (1/1) ... [2023-12-02 17:27:39,222 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 17:27:39,233 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54129b62-f486-43d3-bc95-bd5f6116b491/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:27:39,244 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54129b62-f486-43d3-bc95-bd5f6116b491/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 17:27:39,250 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54129b62-f486-43d3-bc95-bd5f6116b491/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 17:27:39,277 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 17:27:39,277 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-02 17:27:39,277 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-02 17:27:39,277 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-02 17:27:39,277 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 17:27:39,278 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 17:27:39,344 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 17:27:39,346 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 17:27:39,577 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 17:27:39,677 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 17:27:39,677 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-02 17:27:39,679 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 05:27:39 BoogieIcfgContainer [2023-12-02 17:27:39,679 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 17:27:39,682 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 17:27:39,682 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 17:27:39,685 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 17:27:39,685 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 05:27:38" (1/3) ... [2023-12-02 17:27:39,686 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3da49d65 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 05:27:39, skipping insertion in model container [2023-12-02 17:27:39,686 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:27:39" (2/3) ... [2023-12-02 17:27:39,687 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3da49d65 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 05:27:39, skipping insertion in model container [2023-12-02 17:27:39,687 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 05:27:39" (3/3) ... [2023-12-02 17:27:39,688 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_floatingpointinfluence_no-floats_file-29.i [2023-12-02 17:27:39,712 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 17:27:39,713 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-02 17:27:39,756 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 17:27:39,762 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;@397ef7dd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 17:27:39,762 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-02 17:27:39,766 INFO L276 IsEmpty]: Start isEmpty. Operand has 21 states, 10 states have (on average 1.3) internal successors, (13), 11 states have internal predecessors, (13), 8 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-12-02 17:27:39,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-12-02 17:27:39,774 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:27:39,774 INFO L195 NwaCegarLoop]: trace histogram [8, 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 17:27:39,775 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 17:27:39,780 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:27:39,781 INFO L85 PathProgramCache]: Analyzing trace with hash 1131841983, now seen corresponding path program 1 times [2023-12-02 17:27:39,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:27:39,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269155564] [2023-12-02 17:27:39,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:27:39,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:27:40,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-02 17:27:40,003 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-12-02 17:27:40,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-02 17:27:40,107 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-12-02 17:27:40,109 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-12-02 17:27:40,110 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-02 17:27:40,112 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-02 17:27:40,116 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-12-02 17:27:40,121 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-12-02 17:27:40,155 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 05:27:40 BoogieIcfgContainer [2023-12-02 17:27:40,155 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-02 17:27:40,156 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-12-02 17:27:40,156 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-12-02 17:27:40,156 INFO L274 PluginConnector]: Witness Printer initialized [2023-12-02 17:27:40,157 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 05:27:39" (3/4) ... [2023-12-02 17:27:40,159 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-12-02 17:27:40,160 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-12-02 17:27:40,162 INFO L158 Benchmark]: Toolchain (without parser) took 1256.31ms. Allocated memory was 127.9MB in the beginning and 155.2MB in the end (delta: 27.3MB). Free memory was 90.3MB in the beginning and 89.5MB in the end (delta: 793.7kB). Peak memory consumption was 28.6MB. Max. memory is 16.1GB. [2023-12-02 17:27:40,162 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 127.9MB. Free memory is still 70.4MB. There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 17:27:40,163 INFO L158 Benchmark]: CACSL2BoogieTranslator took 249.11ms. Allocated memory is still 127.9MB. Free memory was 90.3MB in the beginning and 78.4MB in the end (delta: 11.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-12-02 17:27:40,163 INFO L158 Benchmark]: Boogie Procedure Inliner took 34.89ms. Allocated memory is still 127.9MB. Free memory was 78.4MB in the beginning and 76.0MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-12-02 17:27:40,164 INFO L158 Benchmark]: Boogie Preprocessor took 23.37ms. Allocated memory is still 127.9MB. Free memory was 76.0MB in the beginning and 74.3MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-12-02 17:27:40,165 INFO L158 Benchmark]: RCFGBuilder took 464.05ms. Allocated memory was 127.9MB in the beginning and 155.2MB in the end (delta: 27.3MB). Free memory was 74.3MB in the beginning and 115.6MB in the end (delta: -41.3MB). Peak memory consumption was 18.1MB. Max. memory is 16.1GB. [2023-12-02 17:27:40,165 INFO L158 Benchmark]: TraceAbstraction took 473.82ms. Allocated memory is still 155.2MB. Free memory was 114.7MB in the beginning and 90.4MB in the end (delta: 24.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2023-12-02 17:27:40,166 INFO L158 Benchmark]: Witness Printer took 4.12ms. Allocated memory is still 155.2MB. Free memory was 90.4MB in the beginning and 89.5MB in the end (delta: 930.3kB). There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 17:27:40,169 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 127.9MB. Free memory is still 70.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 249.11ms. Allocated memory is still 127.9MB. Free memory was 90.3MB in the beginning and 78.4MB in the end (delta: 11.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 34.89ms. Allocated memory is still 127.9MB. Free memory was 78.4MB in the beginning and 76.0MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 23.37ms. Allocated memory is still 127.9MB. Free memory was 76.0MB in the beginning and 74.3MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 464.05ms. Allocated memory was 127.9MB in the beginning and 155.2MB in the end (delta: 27.3MB). Free memory was 74.3MB in the beginning and 115.6MB in the end (delta: -41.3MB). Peak memory consumption was 18.1MB. Max. memory is 16.1GB. * TraceAbstraction took 473.82ms. Allocated memory is still 155.2MB. Free memory was 114.7MB in the beginning and 90.4MB in the end (delta: 24.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Witness Printer took 4.12ms. Allocated memory is still 155.2MB. Free memory was 90.4MB in the beginning and 89.5MB in the end (delta: 930.3kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 19]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 44, overapproximation of someBinaryFLOATComparisonOperation at line 52. Possible FailurePath: [L21] unsigned char isInitial = 0; [L22] signed long int var_1_1 = 2; [L23] signed long int var_1_3 = 9; [L24] signed long int var_1_4 = 3; [L25] unsigned short int var_1_5 = 32; [L26] unsigned short int var_1_9 = 1; [L27] unsigned char var_1_10 = 8; [L28] unsigned char var_1_11 = 5; [L29] unsigned char var_1_12 = 1; [L30] unsigned char var_1_13 = 1; [L31] unsigned char var_1_14 = 8; [L82] isInitial = 1 [L83] FCALL initially() [L84] COND TRUE 1 [L85] FCALL updateLastVariables() [L86] CALL updateVariables() [L62] var_1_3 = __VERIFIER_nondet_long() [L63] CALL assume_abort_if_not(var_1_3 >= -2147483648) VAL [\old(cond)=1, isInitial=1, var_1_10=8, var_1_11=5, var_1_12=1, var_1_13=1, var_1_14=8, var_1_1=2, var_1_3=0, var_1_4=3, var_1_5=32, var_1_9=1] [L20] COND FALSE !(!cond) [L63] RET assume_abort_if_not(var_1_3 >= -2147483648) VAL [isInitial=1, var_1_10=8, var_1_11=5, var_1_12=1, var_1_13=1, var_1_14=8, var_1_1=2, var_1_3=0, var_1_4=3, var_1_5=32, var_1_9=1] [L64] CALL assume_abort_if_not(var_1_3 <= 2147483647) VAL [\old(cond)=1, isInitial=1, var_1_10=8, var_1_11=5, var_1_12=1, var_1_13=1, var_1_14=8, var_1_1=2, var_1_3=0, var_1_4=3, var_1_5=32, var_1_9=1] [L20] COND FALSE !(!cond) [L64] RET assume_abort_if_not(var_1_3 <= 2147483647) VAL [isInitial=1, var_1_10=8, var_1_11=5, var_1_12=1, var_1_13=1, var_1_14=8, var_1_1=2, var_1_3=0, var_1_4=3, var_1_5=32, var_1_9=1] [L65] var_1_4 = __VERIFIER_nondet_long() [L66] CALL assume_abort_if_not(var_1_4 >= -2147483648) VAL [\old(cond)=1, isInitial=1, var_1_10=8, var_1_11=5, var_1_12=1, var_1_13=1, var_1_14=8, var_1_1=2, var_1_3=0, var_1_4=0, var_1_5=32, var_1_9=1] [L20] COND FALSE !(!cond) [L66] RET assume_abort_if_not(var_1_4 >= -2147483648) VAL [isInitial=1, var_1_10=8, var_1_11=5, var_1_12=1, var_1_13=1, var_1_14=8, var_1_1=2, var_1_3=0, var_1_4=0, var_1_5=32, var_1_9=1] [L67] CALL assume_abort_if_not(var_1_4 <= 2147483647) VAL [\old(cond)=1, isInitial=1, var_1_10=8, var_1_11=5, var_1_12=1, var_1_13=1, var_1_14=8, var_1_1=2, var_1_3=0, var_1_4=0, var_1_5=32, var_1_9=1] [L20] COND FALSE !(!cond) [L67] RET assume_abort_if_not(var_1_4 <= 2147483647) VAL [isInitial=1, var_1_10=8, var_1_11=5, var_1_12=1, var_1_13=1, var_1_14=8, var_1_1=2, var_1_3=0, var_1_4=0, var_1_5=32, var_1_9=1] [L68] var_1_11 = __VERIFIER_nondet_uchar() [L69] CALL assume_abort_if_not(var_1_11 >= 0) VAL [\old(cond)=1, isInitial=1, var_1_10=8, var_1_12=1, var_1_13=1, var_1_14=8, var_1_1=2, var_1_3=0, var_1_4=0, var_1_5=32, var_1_9=1] [L20] COND FALSE !(!cond) [L69] RET assume_abort_if_not(var_1_11 >= 0) VAL [isInitial=1, var_1_10=8, var_1_12=1, var_1_13=1, var_1_14=8, var_1_1=2, var_1_3=0, var_1_4=0, var_1_5=32, var_1_9=1] [L70] CALL assume_abort_if_not(var_1_11 <= 254) VAL [\old(cond)=1, isInitial=1, var_1_10=8, var_1_11=8, var_1_12=1, var_1_13=1, var_1_14=8, var_1_1=2, var_1_3=0, var_1_4=0, var_1_5=32, var_1_9=1] [L20] COND FALSE !(!cond) [L70] RET assume_abort_if_not(var_1_11 <= 254) VAL [isInitial=1, var_1_10=8, var_1_11=8, var_1_12=1, var_1_13=1, var_1_14=8, var_1_1=2, var_1_3=0, var_1_4=0, var_1_5=32, var_1_9=1] [L71] var_1_13 = __VERIFIER_nondet_uchar() [L72] CALL assume_abort_if_not(var_1_13 >= 1) VAL [\old(cond)=1, isInitial=1, var_1_10=8, var_1_11=8, var_1_12=1, var_1_13=1, var_1_14=8, var_1_1=2, var_1_3=0, var_1_4=0, var_1_5=32, var_1_9=1] [L20] COND FALSE !(!cond) [L72] RET assume_abort_if_not(var_1_13 >= 1) VAL [isInitial=1, var_1_10=8, var_1_11=8, var_1_12=1, var_1_13=1, var_1_14=8, var_1_1=2, var_1_3=0, var_1_4=0, var_1_5=32, var_1_9=1] [L73] CALL assume_abort_if_not(var_1_13 <= 1) VAL [\old(cond)=1, isInitial=1, var_1_10=8, var_1_11=8, var_1_12=1, var_1_13=1, var_1_14=8, var_1_1=2, var_1_3=0, var_1_4=0, var_1_5=32, var_1_9=1] [L20] COND FALSE !(!cond) [L73] RET assume_abort_if_not(var_1_13 <= 1) VAL [isInitial=1, var_1_10=8, var_1_11=8, var_1_12=1, var_1_13=1, var_1_14=8, var_1_1=2, var_1_3=0, var_1_4=0, var_1_5=32, var_1_9=1] [L86] RET updateVariables() [L87] CALL step() [L35] var_1_12 = var_1_13 [L36] var_1_14 = var_1_11 [L37] COND TRUE \read(var_1_12) [L38] var_1_1 = var_1_3 [L44] COND TRUE (var_1_1 + 8.125) > (var_1_1 * var_1_3) [L45] var_1_5 = (((((var_1_14 + var_1_14)) > (var_1_14)) ? ((var_1_14 + var_1_14)) : (var_1_14))) [L49] signed long int stepLocal_0 = 5 * var_1_14; [L50] COND TRUE ((((var_1_3) < (var_1_1)) ? (var_1_3) : (var_1_1))) == var_1_1 [L51] COND FALSE !(var_1_14 > stepLocal_0) [L57] COND FALSE !(var_1_1 < var_1_3) [L87] RET step() [L88] CALL, EXPR property() [L78-L79] return (((((var_1_12 ? (var_1_1 == ((signed long int) var_1_3)) : ((! (var_1_3 < var_1_4)) ? (var_1_1 == ((signed long int) ((((var_1_3) < 0 ) ? -(var_1_3) : (var_1_3))))) : 1)) && (((var_1_1 + 8.125) > (var_1_1 * var_1_3)) ? (var_1_5 == ((unsigned short int) (((((var_1_14 + var_1_14)) > (var_1_14)) ? ((var_1_14 + var_1_14)) : (var_1_14))))) : (var_1_5 == ((unsigned short int) var_1_14)))) && ((((((var_1_3) < (var_1_1)) ? (var_1_3) : (var_1_1))) == var_1_1) ? ((var_1_14 > (5 * var_1_14)) ? ((var_1_1 < (var_1_1 * 256.5f)) ? (var_1_9 == ((unsigned short int) var_1_14)) : 1) : 1) : 1)) && ((var_1_1 < var_1_3) ? (var_1_10 == ((unsigned char) var_1_11)) : 1)) && (var_1_12 == ((unsigned char) var_1_13))) && (var_1_14 == ((unsigned char) var_1_11)) ; [L88] RET, EXPR property() [L88] CALL __VERIFIER_assert(property()) [L19] COND TRUE !(cond) VAL [\old(cond)=0, cond=0, isInitial=1, var_1_10=8, var_1_11=8, var_1_12=1, var_1_13=1, var_1_14=8, var_1_1=0, var_1_3=0, var_1_4=0, var_1_5=16, var_1_9=1] [L19] reach_error() VAL [\old(cond)=0, cond=0, isInitial=1, var_1_10=8, var_1_11=8, var_1_12=1, var_1_13=1, var_1_14=8, var_1_1=0, var_1_3=0, var_1_4=0, var_1_5=16, var_1_9=1] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 21 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.4s, OverallIterations: 1, TraceHistogramMax: 8, 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=21occurred 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, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 32 NumberOfCodeBlocks, 32 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 17:27:40,186 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54129b62-f486-43d3-bc95-bd5f6116b491/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-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54129b62-f486-43d3-bc95-bd5f6116b491/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54129b62-f486-43d3-bc95-bd5f6116b491/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_54129b62-f486-43d3-bc95-bd5f6116b491/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54129b62-f486-43d3-bc95-bd5f6116b491/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_floatingpointinfluence_no-floats_file-29.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54129b62-f486-43d3-bc95-bd5f6116b491/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_54129b62-f486-43d3-bc95-bd5f6116b491/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 9895c65ddd0a757601efacae1236f009f563ee992f30a3895b216cc56df077ed --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 17:27:42,112 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 17:27:42,192 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54129b62-f486-43d3-bc95-bd5f6116b491/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2023-12-02 17:27:42,198 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 17:27:42,199 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 17:27:42,226 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 17:27:42,227 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 17:27:42,228 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 17:27:42,228 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 17:27:42,229 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 17:27:42,229 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 17:27:42,230 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 17:27:42,230 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 17:27:42,231 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 17:27:42,231 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 17:27:42,232 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 17:27:42,233 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 17:27:42,233 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 17:27:42,234 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 17:27:42,235 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 17:27:42,235 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 17:27:42,236 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 17:27:42,236 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 17:27:42,237 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 17:27:42,237 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-02 17:27:42,237 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-02 17:27:42,238 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-02 17:27:42,238 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 17:27:42,239 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 17:27:42,239 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 17:27:42,240 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 17:27:42,240 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-02 17:27:42,240 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 17:27:42,240 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 17:27:42,241 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 17:27:42,241 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 17:27:42,241 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 17:27:42,241 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 17:27:42,242 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-12-02 17:27:42,242 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-02 17:27:42,242 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 17:27:42,242 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 17:27:42,243 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 17:27:42,243 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 17:27:42,243 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_54129b62-f486-43d3-bc95-bd5f6116b491/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54129b62-f486-43d3-bc95-bd5f6116b491/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9895c65ddd0a757601efacae1236f009f563ee992f30a3895b216cc56df077ed [2023-12-02 17:27:42,511 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 17:27:42,530 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 17:27:42,533 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 17:27:42,534 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 17:27:42,534 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 17:27:42,536 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54129b62-f486-43d3-bc95-bd5f6116b491/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/hardness-nfm22/hardness_floatingpointinfluence_no-floats_file-29.i [2023-12-02 17:27:45,304 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 17:27:45,493 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 17:27:45,494 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54129b62-f486-43d3-bc95-bd5f6116b491/sv-benchmarks/c/hardness-nfm22/hardness_floatingpointinfluence_no-floats_file-29.i [2023-12-02 17:27:45,502 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54129b62-f486-43d3-bc95-bd5f6116b491/bin/utaipan-verify-nQ1chXbOIh/data/6cb639940/1a508ffb79264d79aa8e4ad16a2cd18e/FLAG2ab58774a [2023-12-02 17:27:45,513 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54129b62-f486-43d3-bc95-bd5f6116b491/bin/utaipan-verify-nQ1chXbOIh/data/6cb639940/1a508ffb79264d79aa8e4ad16a2cd18e [2023-12-02 17:27:45,515 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 17:27:45,517 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 17:27:45,518 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 17:27:45,518 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 17:27:45,523 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 17:27:45,524 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 05:27:45" (1/1) ... [2023-12-02 17:27:45,524 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@67c3f551 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:27:45, skipping insertion in model container [2023-12-02 17:27:45,525 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 05:27:45" (1/1) ... [2023-12-02 17:27:45,552 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 17:27:45,701 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_54129b62-f486-43d3-bc95-bd5f6116b491/sv-benchmarks/c/hardness-nfm22/hardness_floatingpointinfluence_no-floats_file-29.i[916,929] [2023-12-02 17:27:45,736 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 17:27:45,752 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 17:27:45,765 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_54129b62-f486-43d3-bc95-bd5f6116b491/sv-benchmarks/c/hardness-nfm22/hardness_floatingpointinfluence_no-floats_file-29.i[916,929] [2023-12-02 17:27:45,782 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 17:27:45,801 INFO L206 MainTranslator]: Completed translation [2023-12-02 17:27:45,802 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:27:45 WrapperNode [2023-12-02 17:27:45,802 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 17:27:45,803 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 17:27:45,803 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 17:27:45,803 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 17:27:45,810 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:27:45" (1/1) ... [2023-12-02 17:27:45,821 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:27:45" (1/1) ... [2023-12-02 17:27:45,844 INFO L138 Inliner]: procedures = 27, calls = 21, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 80 [2023-12-02 17:27:45,845 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 17:27:45,845 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 17:27:45,846 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 17:27:45,846 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 17:27:45,855 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:27:45" (1/1) ... [2023-12-02 17:27:45,855 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:27:45" (1/1) ... [2023-12-02 17:27:45,859 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:27:45" (1/1) ... [2023-12-02 17:27:45,859 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:27:45" (1/1) ... [2023-12-02 17:27:45,867 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:27:45" (1/1) ... [2023-12-02 17:27:45,871 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:27:45" (1/1) ... [2023-12-02 17:27:45,873 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:27:45" (1/1) ... [2023-12-02 17:27:45,875 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:27:45" (1/1) ... [2023-12-02 17:27:45,878 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 17:27:45,879 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 17:27:45,879 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 17:27:45,880 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 17:27:45,880 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:27:45" (1/1) ... [2023-12-02 17:27:45,886 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 17:27:45,898 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54129b62-f486-43d3-bc95-bd5f6116b491/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:27:45,914 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54129b62-f486-43d3-bc95-bd5f6116b491/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 17:27:45,931 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54129b62-f486-43d3-bc95-bd5f6116b491/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 17:27:45,960 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 17:27:45,960 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-12-02 17:27:45,960 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-02 17:27:45,960 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-02 17:27:45,961 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 17:27:45,961 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 17:27:46,028 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 17:27:46,030 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 17:27:52,395 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 17:27:52,432 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 17:27:52,432 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-02 17:27:52,433 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 05:27:52 BoogieIcfgContainer [2023-12-02 17:27:52,433 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 17:27:52,435 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 17:27:52,436 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 17:27:52,438 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 17:27:52,438 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 05:27:45" (1/3) ... [2023-12-02 17:27:52,439 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72653cce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 05:27:52, skipping insertion in model container [2023-12-02 17:27:52,439 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:27:45" (2/3) ... [2023-12-02 17:27:52,439 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72653cce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 05:27:52, skipping insertion in model container [2023-12-02 17:27:52,439 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 05:27:52" (3/3) ... [2023-12-02 17:27:52,440 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_floatingpointinfluence_no-floats_file-29.i [2023-12-02 17:27:52,453 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 17:27:52,453 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-02 17:27:52,492 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 17:27:52,497 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;@53c1cbe0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 17:27:52,497 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-02 17:27:52,501 INFO L276 IsEmpty]: Start isEmpty. Operand has 33 states, 22 states have (on average 1.5454545454545454) internal successors, (34), 23 states have internal predecessors, (34), 8 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-12-02 17:27:52,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-12-02 17:27:52,509 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:27:52,510 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 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 17:27:52,510 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 17:27:52,515 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:27:52,515 INFO L85 PathProgramCache]: Analyzing trace with hash -960659490, now seen corresponding path program 1 times [2023-12-02 17:27:52,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 17:27:52,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [601625669] [2023-12-02 17:27:52,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:27:52,529 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 17:27:52,529 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54129b62-f486-43d3-bc95-bd5f6116b491/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 17:27:52,531 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54129b62-f486-43d3-bc95-bd5f6116b491/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 17:27:52,532 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54129b62-f486-43d3-bc95-bd5f6116b491/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 17:27:52,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:27:52,731 INFO L262 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-02 17:27:52,737 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:27:52,797 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-12-02 17:27:52,797 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 17:27:52,798 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 17:27:52,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [601625669] [2023-12-02 17:27:52,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [601625669] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:27:52,799 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:27:52,799 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 17:27:52,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542635351] [2023-12-02 17:27:52,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:27:52,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 17:27:52,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 17:27:52,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 17:27:52,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 17:27:52,836 INFO L87 Difference]: Start difference. First operand has 33 states, 22 states have (on average 1.5454545454545454) internal successors, (34), 23 states have internal predecessors, (34), 8 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2023-12-02 17:27:55,401 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.63s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 17:27:58,207 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 17:28:00,918 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.34s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 17:28:02,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:28:02,780 INFO L93 Difference]: Finished difference Result 75 states and 126 transitions. [2023-12-02 17:28:02,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 17:28:02,783 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 54 [2023-12-02 17:28:02,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:28:02,788 INFO L225 Difference]: With dead ends: 75 [2023-12-02 17:28:02,788 INFO L226 Difference]: Without dead ends: 43 [2023-12-02 17:28:02,790 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 17:28:02,793 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 12 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.9s IncrementalHoareTripleChecker+Time [2023-12-02 17:28:02,794 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 70 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 1 Unknown, 0 Unchecked, 9.9s Time] [2023-12-02 17:28:02,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2023-12-02 17:28:02,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 37. [2023-12-02 17:28:02,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 27 states have (on average 1.4074074074074074) internal successors, (38), 27 states have internal predecessors, (38), 8 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-12-02 17:28:02,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 54 transitions. [2023-12-02 17:28:02,832 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 54 transitions. Word has length 54 [2023-12-02 17:28:02,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:28:02,834 INFO L495 AbstractCegarLoop]: Abstraction has 37 states and 54 transitions. [2023-12-02 17:28:02,835 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2023-12-02 17:28:02,835 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 54 transitions. [2023-12-02 17:28:02,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-12-02 17:28:02,838 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:28:02,838 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 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 17:28:02,848 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54129b62-f486-43d3-bc95-bd5f6116b491/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 17:28:03,040 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54129b62-f486-43d3-bc95-bd5f6116b491/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 17:28:03,041 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 17:28:03,041 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:28:03,041 INFO L85 PathProgramCache]: Analyzing trace with hash -649515868, now seen corresponding path program 1 times [2023-12-02 17:28:03,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 17:28:03,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [454786470] [2023-12-02 17:28:03,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:28:03,042 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 17:28:03,043 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54129b62-f486-43d3-bc95-bd5f6116b491/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 17:28:03,044 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54129b62-f486-43d3-bc95-bd5f6116b491/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 17:28:03,045 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54129b62-f486-43d3-bc95-bd5f6116b491/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 17:28:03,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:28:03,225 INFO L262 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-02 17:28:03,228 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:28:03,463 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2023-12-02 17:28:03,464 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 17:28:03,464 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 17:28:03,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [454786470] [2023-12-02 17:28:03,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [454786470] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:28:03,465 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:28:03,465 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-02 17:28:03,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457242192] [2023-12-02 17:28:03,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:28:03,467 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-02 17:28:03,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 17:28:03,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-02 17:28:03,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-12-02 17:28:03,468 INFO L87 Difference]: Start difference. First operand 37 states and 54 transitions. Second operand has 9 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 7 states have internal predecessors, (24), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-02 17:28:05,713 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.72s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 17:28:05,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:28:05,813 INFO L93 Difference]: Finished difference Result 76 states and 102 transitions. [2023-12-02 17:28:05,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-02 17:28:05,841 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 7 states have internal predecessors, (24), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) Word has length 55 [2023-12-02 17:28:05,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:28:05,842 INFO L225 Difference]: With dead ends: 76 [2023-12-02 17:28:05,842 INFO L226 Difference]: Without dead ends: 40 [2023-12-02 17:28:05,843 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=97, Invalid=209, Unknown=0, NotChecked=0, Total=306 [2023-12-02 17:28:05,844 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 61 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-12-02 17:28:05,844 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 79 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-12-02 17:28:05,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2023-12-02 17:28:05,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 38. [2023-12-02 17:28:05,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 26 states have (on average 1.1538461538461537) internal successors, (30), 26 states have internal predecessors, (30), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-12-02 17:28:05,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 46 transitions. [2023-12-02 17:28:05,851 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 46 transitions. Word has length 55 [2023-12-02 17:28:05,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:28:05,851 INFO L495 AbstractCegarLoop]: Abstraction has 38 states and 46 transitions. [2023-12-02 17:28:05,852 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 7 states have internal predecessors, (24), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-02 17:28:05,852 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 46 transitions. [2023-12-02 17:28:05,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-12-02 17:28:05,853 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:28:05,853 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 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 17:28:05,858 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54129b62-f486-43d3-bc95-bd5f6116b491/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 17:28:06,054 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54129b62-f486-43d3-bc95-bd5f6116b491/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 17:28:06,054 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 17:28:06,054 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:28:06,055 INFO L85 PathProgramCache]: Analyzing trace with hash -124422920, now seen corresponding path program 1 times [2023-12-02 17:28:06,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 17:28:06,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [16361780] [2023-12-02 17:28:06,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:28:06,055 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 17:28:06,055 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54129b62-f486-43d3-bc95-bd5f6116b491/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 17:28:06,056 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54129b62-f486-43d3-bc95-bd5f6116b491/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 17:28:06,057 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54129b62-f486-43d3-bc95-bd5f6116b491/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 (4)] Waiting until timeout for monitored process [2023-12-02 17:28:06,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:28:06,213 INFO L262 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-02 17:28:06,218 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:28:51,413 WARN L293 SmtUtils]: Spent 18.72s on a formula simplification. DAG size of input: 34 DAG size of output: 28 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)