./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount25_file-20.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_671edd5f-772c-43c3-901f-eba28f6bb40e/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_671edd5f-772c-43c3-901f-eba28f6bb40e/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_671edd5f-772c-43c3-901f-eba28f6bb40e/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_671edd5f-772c-43c3-901f-eba28f6bb40e/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount25_file-20.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_671edd5f-772c-43c3-901f-eba28f6bb40e/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_671edd5f-772c-43c3-901f-eba28f6bb40e/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 9942167140f46cf9a6de342ca7e9162ccfb76997661e3494128a17b58a9424e7 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 18:35:32,839 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 18:35:32,904 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_671edd5f-772c-43c3-901f-eba28f6bb40e/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-12-02 18:35:32,909 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 18:35:32,909 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 18:35:32,934 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 18:35:32,934 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 18:35:32,935 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 18:35:32,936 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 18:35:32,936 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 18:35:32,937 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 18:35:32,937 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 18:35:32,938 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 18:35:32,938 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 18:35:32,939 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 18:35:32,939 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 18:35:32,939 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 18:35:32,940 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 18:35:32,940 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 18:35:32,941 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 18:35:32,941 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 18:35:32,942 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 18:35:32,943 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 18:35:32,943 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 18:35:32,944 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 18:35:32,944 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 18:35:32,945 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 18:35:32,945 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 18:35:32,945 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 18:35:32,946 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 18:35:32,946 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 18:35:32,946 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 18:35:32,947 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 18:35:32,947 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 18:35:32,947 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 18:35:32,948 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 18:35:32,948 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 18:35:32,948 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 18:35:32,948 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 18:35:32,948 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 18:35:32,949 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 18:35:32,949 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 18:35:32,949 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 18:35:32,949 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 18:35:32,949 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 18:35:32,950 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 18:35:32,950 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 18:35:32,950 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_671edd5f-772c-43c3-901f-eba28f6bb40e/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_671edd5f-772c-43c3-901f-eba28f6bb40e/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9942167140f46cf9a6de342ca7e9162ccfb76997661e3494128a17b58a9424e7 [2023-12-02 18:35:33,169 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 18:35:33,206 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 18:35:33,208 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 18:35:33,210 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 18:35:33,210 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 18:35:33,211 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_671edd5f-772c-43c3-901f-eba28f6bb40e/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount25_file-20.i [2023-12-02 18:35:36,010 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 18:35:36,195 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 18:35:36,196 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_671edd5f-772c-43c3-901f-eba28f6bb40e/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount25_file-20.i [2023-12-02 18:35:36,204 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_671edd5f-772c-43c3-901f-eba28f6bb40e/bin/utaipan-verify-nQ1chXbOIh/data/bbae8da4c/ad2955319b944b9daea59158b28bfeb8/FLAG271b2436f [2023-12-02 18:35:36,219 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_671edd5f-772c-43c3-901f-eba28f6bb40e/bin/utaipan-verify-nQ1chXbOIh/data/bbae8da4c/ad2955319b944b9daea59158b28bfeb8 [2023-12-02 18:35:36,222 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 18:35:36,224 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 18:35:36,225 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 18:35:36,225 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 18:35:36,231 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 18:35:36,231 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 06:35:36" (1/1) ... [2023-12-02 18:35:36,233 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5cbd0d64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:35:36, skipping insertion in model container [2023-12-02 18:35:36,233 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 06:35:36" (1/1) ... [2023-12-02 18:35:36,256 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 18:35:36,376 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_671edd5f-772c-43c3-901f-eba28f6bb40e/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount25_file-20.i[915,928] [2023-12-02 18:35:36,406 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 18:35:36,418 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 18:35:36,428 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_671edd5f-772c-43c3-901f-eba28f6bb40e/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount25_file-20.i[915,928] [2023-12-02 18:35:36,445 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 18:35:36,463 INFO L206 MainTranslator]: Completed translation [2023-12-02 18:35:36,464 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:35:36 WrapperNode [2023-12-02 18:35:36,464 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 18:35:36,465 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 18:35:36,465 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 18:35:36,465 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 18:35:36,471 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:35:36" (1/1) ... [2023-12-02 18:35:36,478 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:35:36" (1/1) ... [2023-12-02 18:35:36,502 INFO L138 Inliner]: procedures = 26, calls = 19, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 79 [2023-12-02 18:35:36,502 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 18:35:36,503 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 18:35:36,503 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 18:35:36,503 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 18:35:36,511 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:35:36" (1/1) ... [2023-12-02 18:35:36,511 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:35:36" (1/1) ... [2023-12-02 18:35:36,513 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:35:36" (1/1) ... [2023-12-02 18:35:36,513 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:35:36" (1/1) ... [2023-12-02 18:35:36,519 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:35:36" (1/1) ... [2023-12-02 18:35:36,522 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:35:36" (1/1) ... [2023-12-02 18:35:36,524 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:35:36" (1/1) ... [2023-12-02 18:35:36,525 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:35:36" (1/1) ... [2023-12-02 18:35:36,528 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 18:35:36,529 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 18:35:36,529 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 18:35:36,529 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 18:35:36,530 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:35:36" (1/1) ... [2023-12-02 18:35:36,536 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 18:35:36,551 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_671edd5f-772c-43c3-901f-eba28f6bb40e/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:35:36,563 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_671edd5f-772c-43c3-901f-eba28f6bb40e/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 18:35:36,565 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_671edd5f-772c-43c3-901f-eba28f6bb40e/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 18:35:36,592 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 18:35:36,592 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-02 18:35:36,593 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-02 18:35:36,593 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-02 18:35:36,593 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 18:35:36,593 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 18:35:36,659 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 18:35:36,662 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 18:35:36,821 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 18:35:36,918 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 18:35:36,918 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-02 18:35:36,920 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 06:35:36 BoogieIcfgContainer [2023-12-02 18:35:36,920 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 18:35:36,923 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 18:35:36,923 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 18:35:36,926 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 18:35:36,926 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 06:35:36" (1/3) ... [2023-12-02 18:35:36,927 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1edb4b74 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 06:35:36, skipping insertion in model container [2023-12-02 18:35:36,927 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:35:36" (2/3) ... [2023-12-02 18:35:36,927 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1edb4b74 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 06:35:36, skipping insertion in model container [2023-12-02 18:35:36,928 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 06:35:36" (3/3) ... [2023-12-02 18:35:36,929 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount25_file-20.i [2023-12-02 18:35:36,945 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 18:35:36,945 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-02 18:35:36,986 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 18:35:36,992 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;@51c79d5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 18:35:36,992 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-02 18:35:36,996 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 12 states have internal predecessors, (14), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-12-02 18:35:37,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-12-02 18:35:37,002 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:35:37,003 INFO L195 NwaCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:35:37,003 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 18:35:37,008 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:35:37,008 INFO L85 PathProgramCache]: Analyzing trace with hash -202751135, now seen corresponding path program 1 times [2023-12-02 18:35:37,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:35:37,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032188172] [2023-12-02 18:35:37,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:35:37,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:35:37,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-02 18:35:37,181 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-12-02 18:35:37,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-02 18:35:37,274 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-12-02 18:35:37,275 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-12-02 18:35:37,276 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-02 18:35:37,278 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-02 18:35:37,282 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-12-02 18:35:37,285 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-12-02 18:35:37,317 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 06:35:37 BoogieIcfgContainer [2023-12-02 18:35:37,317 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-02 18:35:37,318 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-12-02 18:35:37,318 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-12-02 18:35:37,318 INFO L274 PluginConnector]: Witness Printer initialized [2023-12-02 18:35:37,319 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 06:35:36" (3/4) ... [2023-12-02 18:35:37,321 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-12-02 18:35:37,322 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-12-02 18:35:37,323 INFO L158 Benchmark]: Toolchain (without parser) took 1099.70ms. Allocated memory is still 157.3MB. Free memory was 118.3MB in the beginning and 122.1MB in the end (delta: -3.8MB). There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 18:35:37,324 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 107.0MB. Free memory is still 58.4MB. There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 18:35:37,324 INFO L158 Benchmark]: CACSL2BoogieTranslator took 239.15ms. Allocated memory is still 157.3MB. Free memory was 117.8MB in the beginning and 106.3MB in the end (delta: 11.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-12-02 18:35:37,325 INFO L158 Benchmark]: Boogie Procedure Inliner took 37.31ms. Allocated memory is still 157.3MB. Free memory was 106.3MB in the beginning and 104.7MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-12-02 18:35:37,326 INFO L158 Benchmark]: Boogie Preprocessor took 25.12ms. Allocated memory is still 157.3MB. Free memory was 104.7MB in the beginning and 103.1MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-12-02 18:35:37,326 INFO L158 Benchmark]: RCFGBuilder took 391.29ms. Allocated memory is still 157.3MB. Free memory was 103.1MB in the beginning and 85.9MB in the end (delta: 17.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2023-12-02 18:35:37,327 INFO L158 Benchmark]: TraceAbstraction took 394.90ms. Allocated memory is still 157.3MB. Free memory was 85.4MB in the beginning and 122.9MB in the end (delta: -37.5MB). Peak memory consumption was 22.7MB. Max. memory is 16.1GB. [2023-12-02 18:35:37,328 INFO L158 Benchmark]: Witness Printer took 4.39ms. Allocated memory is still 157.3MB. Free memory was 122.9MB in the beginning and 122.1MB in the end (delta: 742.3kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-12-02 18:35:37,331 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 107.0MB. Free memory is still 58.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 239.15ms. Allocated memory is still 157.3MB. Free memory was 117.8MB in the beginning and 106.3MB in the end (delta: 11.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 37.31ms. Allocated memory is still 157.3MB. Free memory was 106.3MB in the beginning and 104.7MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 25.12ms. Allocated memory is still 157.3MB. Free memory was 104.7MB in the beginning and 103.1MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 391.29ms. Allocated memory is still 157.3MB. Free memory was 103.1MB in the beginning and 85.9MB in the end (delta: 17.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 394.90ms. Allocated memory is still 157.3MB. Free memory was 85.4MB in the beginning and 122.9MB in the end (delta: -37.5MB). Peak memory consumption was 22.7MB. Max. memory is 16.1GB. * Witness Printer took 4.39ms. Allocated memory is still 157.3MB. Free memory was 122.9MB in the beginning and 122.1MB in the end (delta: 742.3kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 19]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 54, overapproximation of someBinaryArithmeticDOUBLEoperation at line 41, overapproximation of someBinaryDOUBLEComparisonOperation at line 44, overapproximation of someBinaryArithmeticFLOAToperation at line 36. Possible FailurePath: [L21] unsigned char isInitial = 0; [L22] float var_1_1 = 0.6; [L23] unsigned char var_1_2 = 0; [L24] float var_1_3 = 0.0; [L25] float var_1_4 = 2.95; [L26] float var_1_5 = 8.5; [L27] float var_1_6 = 999999999999.4; [L28] double var_1_7 = 10.2; [L29] double var_1_8 = 32.7; [L30] double var_1_9 = 32.75; [L31] double last_1_var_1_8 = 32.7; [L79] isInitial = 1 [L80] FCALL initially() [L81] COND TRUE 1 [L82] CALL updateLastVariables() [L72] last_1_var_1_8 = var_1_8 [L82] RET updateLastVariables() [L83] CALL updateVariables() [L59] var_1_2 = __VERIFIER_nondet_uchar() [L60] CALL assume_abort_if_not(var_1_2 >= 0) VAL [\old(cond)=1, isInitial=1, last_1_var_1_8=327/10, var_1_1=3/5, var_1_3=0, var_1_4=59/20, var_1_5=17/2, var_1_6=4999999999997/5, var_1_7=51/5, var_1_8=327/10, var_1_9=131/4] [L20] COND FALSE !(!cond) [L60] RET assume_abort_if_not(var_1_2 >= 0) VAL [isInitial=1, last_1_var_1_8=327/10, var_1_1=3/5, var_1_3=0, var_1_4=59/20, var_1_5=17/2, var_1_6=4999999999997/5, var_1_7=51/5, var_1_8=327/10, var_1_9=131/4] [L61] CALL assume_abort_if_not(var_1_2 <= 1) VAL [\old(cond)=1, isInitial=1, last_1_var_1_8=327/10, var_1_1=3/5, var_1_2=1, var_1_3=0, var_1_4=59/20, var_1_5=17/2, var_1_6=4999999999997/5, var_1_7=51/5, var_1_8=327/10, var_1_9=131/4] [L20] COND FALSE !(!cond) [L61] RET assume_abort_if_not(var_1_2 <= 1) VAL [isInitial=1, last_1_var_1_8=327/10, var_1_1=3/5, var_1_2=1, var_1_3=0, var_1_4=59/20, var_1_5=17/2, var_1_6=4999999999997/5, var_1_7=51/5, var_1_8=327/10, var_1_9=131/4] [L62] var_1_3 = __VERIFIER_nondet_float() [L63] CALL assume_abort_if_not((var_1_3 >= 4611686.018427382800e+12F && var_1_3 <= -1.0e-20F) || (var_1_3 <= 9223372.036854765600e+12F && var_1_3 >= 1.0e-20F )) VAL [\old(cond)=1, isInitial=1, last_1_var_1_8=327/10, var_1_1=3/5, var_1_2=1, var_1_4=59/20, var_1_5=17/2, var_1_6=4999999999997/5, var_1_7=51/5, var_1_8=327/10, var_1_9=131/4] [L20] COND FALSE !(!cond) [L63] RET assume_abort_if_not((var_1_3 >= 4611686.018427382800e+12F && var_1_3 <= -1.0e-20F) || (var_1_3 <= 9223372.036854765600e+12F && var_1_3 >= 1.0e-20F )) VAL [isInitial=1, last_1_var_1_8=327/10, var_1_1=3/5, var_1_2=1, var_1_4=59/20, var_1_5=17/2, var_1_6=4999999999997/5, var_1_7=51/5, var_1_8=327/10, var_1_9=131/4] [L64] var_1_4 = __VERIFIER_nondet_float() [L65] CALL assume_abort_if_not((var_1_4 >= 0.0F && var_1_4 <= -1.0e-20F) || (var_1_4 <= 4611686.018427382800e+12F && var_1_4 >= 1.0e-20F )) VAL [\old(cond)=1, isInitial=1, last_1_var_1_8=327/10, var_1_1=3/5, var_1_2=1, var_1_5=17/2, var_1_6=4999999999997/5, var_1_7=51/5, var_1_8=327/10, var_1_9=131/4] [L20] COND FALSE !(!cond) [L65] RET assume_abort_if_not((var_1_4 >= 0.0F && var_1_4 <= -1.0e-20F) || (var_1_4 <= 4611686.018427382800e+12F && var_1_4 >= 1.0e-20F )) VAL [isInitial=1, last_1_var_1_8=327/10, var_1_1=3/5, var_1_2=1, var_1_5=17/2, var_1_6=4999999999997/5, var_1_7=51/5, var_1_8=327/10, var_1_9=131/4] [L66] var_1_5 = __VERIFIER_nondet_float() [L67] CALL assume_abort_if_not((var_1_5 >= 0.0F && var_1_5 <= -1.0e-20F) || (var_1_5 <= 9223372.036854765600e+12F && var_1_5 >= 1.0e-20F )) VAL [\old(cond)=1, isInitial=1, last_1_var_1_8=327/10, var_1_1=3/5, var_1_2=1, var_1_6=4999999999997/5, var_1_7=51/5, var_1_8=327/10, var_1_9=131/4] [L20] COND FALSE !(!cond) [L67] RET assume_abort_if_not((var_1_5 >= 0.0F && var_1_5 <= -1.0e-20F) || (var_1_5 <= 9223372.036854765600e+12F && var_1_5 >= 1.0e-20F )) VAL [isInitial=1, last_1_var_1_8=327/10, var_1_1=3/5, var_1_2=1, var_1_6=4999999999997/5, var_1_7=51/5, var_1_8=327/10, var_1_9=131/4] [L68] var_1_6 = __VERIFIER_nondet_float() [L69] CALL assume_abort_if_not((var_1_6 >= -461168.6018427382800e+13F && var_1_6 <= -1.0e-20F) || (var_1_6 <= 4611686.018427382800e+12F && var_1_6 >= 1.0e-20F )) VAL [\old(cond)=1, isInitial=1, last_1_var_1_8=327/10, var_1_1=3/5, var_1_2=1, var_1_7=51/5, var_1_8=327/10, var_1_9=131/4] [L20] COND FALSE !(!cond) [L69] RET assume_abort_if_not((var_1_6 >= -461168.6018427382800e+13F && var_1_6 <= -1.0e-20F) || (var_1_6 <= 4611686.018427382800e+12F && var_1_6 >= 1.0e-20F )) VAL [isInitial=1, last_1_var_1_8=327/10, var_1_1=3/5, var_1_2=1, var_1_7=51/5, var_1_8=327/10, var_1_9=131/4] [L83] RET updateVariables() [L84] CALL step() [L35] COND TRUE \read(var_1_2) [L36] var_1_1 = ((var_1_3 - var_1_4) - var_1_5) [L40] COND TRUE \read(var_1_2) [L41] var_1_7 = ((((((var_1_3 - 255.719)) < (var_1_5)) ? ((var_1_3 - 255.719)) : (var_1_5))) - 2.3) [L43] COND TRUE \read(var_1_2) [L44] COND TRUE var_1_7 >= ((((last_1_var_1_8) > (var_1_6)) ? (last_1_var_1_8) : (var_1_6))) [L45] var_1_8 = (var_1_5 - var_1_3) [L54] COND TRUE var_1_4 != (var_1_3 - var_1_5) [L55] var_1_9 = var_1_6 [L84] RET step() [L85] CALL, EXPR property() [L75-L76] return (((var_1_2 ? (var_1_1 == ((float) ((var_1_3 - var_1_4) - var_1_5))) : (var_1_1 == ((float) (var_1_4 + var_1_6)))) && (var_1_2 ? (var_1_7 == ((double) ((((((var_1_3 - 255.719)) < (var_1_5)) ? ((var_1_3 - 255.719)) : (var_1_5))) - 2.3))) : 1)) && (var_1_2 ? ((var_1_7 >= ((((last_1_var_1_8) > (var_1_6)) ? (last_1_var_1_8) : (var_1_6)))) ? (var_1_8 == ((double) (var_1_5 - var_1_3))) : (var_1_8 == ((double) var_1_4))) : ((var_1_7 <= var_1_5) ? (var_1_8 == ((double) var_1_6)) : 1))) && ((var_1_4 != (var_1_3 - var_1_5)) ? (var_1_9 == ((double) var_1_6)) : 1) ; [L85] RET, EXPR property() [L85] CALL __VERIFIER_assert(property()) [L19] COND TRUE !(cond) VAL [\old(cond)=0, cond=0, isInitial=1, last_1_var_1_8=327/10, var_1_2=1, var_1_4=131/4, var_1_6=131/4, var_1_7=51/5, var_1_8=131/4, var_1_9=131/4] [L19] reach_error() VAL [\old(cond)=0, cond=0, isInitial=1, last_1_var_1_8=327/10, var_1_2=1, var_1_4=131/4, var_1_6=131/4, var_1_7=51/5, var_1_8=131/4, var_1_9=131/4] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 20 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.3s, OverallIterations: 1, TraceHistogramMax: 6, 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=20occurred 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, 27 NumberOfCodeBlocks, 27 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 18:35:37,350 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_671edd5f-772c-43c3-901f-eba28f6bb40e/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_671edd5f-772c-43c3-901f-eba28f6bb40e/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_671edd5f-772c-43c3-901f-eba28f6bb40e/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_671edd5f-772c-43c3-901f-eba28f6bb40e/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_671edd5f-772c-43c3-901f-eba28f6bb40e/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount25_file-20.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_671edd5f-772c-43c3-901f-eba28f6bb40e/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_671edd5f-772c-43c3-901f-eba28f6bb40e/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 9942167140f46cf9a6de342ca7e9162ccfb76997661e3494128a17b58a9424e7 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 18:35:39,319 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 18:35:39,397 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_671edd5f-772c-43c3-901f-eba28f6bb40e/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2023-12-02 18:35:39,402 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 18:35:39,403 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 18:35:39,429 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 18:35:39,429 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 18:35:39,430 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 18:35:39,431 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 18:35:39,431 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 18:35:39,432 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 18:35:39,432 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 18:35:39,433 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 18:35:39,434 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 18:35:39,434 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 18:35:39,435 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 18:35:39,435 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 18:35:39,436 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 18:35:39,437 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 18:35:39,437 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 18:35:39,438 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 18:35:39,441 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 18:35:39,441 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 18:35:39,442 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 18:35:39,442 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-02 18:35:39,443 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-02 18:35:39,443 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-02 18:35:39,443 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 18:35:39,444 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 18:35:39,444 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 18:35:39,444 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 18:35:39,445 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-02 18:35:39,445 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 18:35:39,445 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 18:35:39,446 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 18:35:39,446 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 18:35:39,446 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 18:35:39,446 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 18:35:39,447 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-12-02 18:35:39,447 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-02 18:35:39,447 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 18:35:39,448 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 18:35:39,448 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 18:35:39,448 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 18:35:39,448 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_671edd5f-772c-43c3-901f-eba28f6bb40e/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_671edd5f-772c-43c3-901f-eba28f6bb40e/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9942167140f46cf9a6de342ca7e9162ccfb76997661e3494128a17b58a9424e7 [2023-12-02 18:35:39,749 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 18:35:39,770 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 18:35:39,772 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 18:35:39,773 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 18:35:39,774 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 18:35:39,775 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_671edd5f-772c-43c3-901f-eba28f6bb40e/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount25_file-20.i [2023-12-02 18:35:42,548 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 18:35:42,750 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 18:35:42,751 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_671edd5f-772c-43c3-901f-eba28f6bb40e/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount25_file-20.i [2023-12-02 18:35:42,758 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_671edd5f-772c-43c3-901f-eba28f6bb40e/bin/utaipan-verify-nQ1chXbOIh/data/b7a9575ce/a52a8604fdf149818ffde57018ef79e8/FLAG071a31a1c [2023-12-02 18:35:42,771 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_671edd5f-772c-43c3-901f-eba28f6bb40e/bin/utaipan-verify-nQ1chXbOIh/data/b7a9575ce/a52a8604fdf149818ffde57018ef79e8 [2023-12-02 18:35:42,773 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 18:35:42,774 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 18:35:42,775 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 18:35:42,775 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 18:35:42,779 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 18:35:42,780 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 06:35:42" (1/1) ... [2023-12-02 18:35:42,781 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@188ef777 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:35:42, skipping insertion in model container [2023-12-02 18:35:42,781 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 06:35:42" (1/1) ... [2023-12-02 18:35:42,805 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 18:35:42,930 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_671edd5f-772c-43c3-901f-eba28f6bb40e/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount25_file-20.i[915,928] [2023-12-02 18:35:42,963 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 18:35:42,980 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 18:35:42,991 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_671edd5f-772c-43c3-901f-eba28f6bb40e/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount25_file-20.i[915,928] [2023-12-02 18:35:43,007 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 18:35:43,024 INFO L206 MainTranslator]: Completed translation [2023-12-02 18:35:43,024 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:35:43 WrapperNode [2023-12-02 18:35:43,025 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 18:35:43,026 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 18:35:43,026 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 18:35:43,026 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 18:35:43,031 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:35:43" (1/1) ... [2023-12-02 18:35:43,042 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:35:43" (1/1) ... [2023-12-02 18:35:43,066 INFO L138 Inliner]: procedures = 27, calls = 19, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 79 [2023-12-02 18:35:43,066 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 18:35:43,067 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 18:35:43,067 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 18:35:43,068 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 18:35:43,075 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:35:43" (1/1) ... [2023-12-02 18:35:43,075 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:35:43" (1/1) ... [2023-12-02 18:35:43,079 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:35:43" (1/1) ... [2023-12-02 18:35:43,079 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:35:43" (1/1) ... [2023-12-02 18:35:43,088 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:35:43" (1/1) ... [2023-12-02 18:35:43,092 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:35:43" (1/1) ... [2023-12-02 18:35:43,094 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:35:43" (1/1) ... [2023-12-02 18:35:43,096 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:35:43" (1/1) ... [2023-12-02 18:35:43,100 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 18:35:43,101 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 18:35:43,101 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 18:35:43,102 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 18:35:43,102 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:35:43" (1/1) ... [2023-12-02 18:35:43,109 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 18:35:43,122 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_671edd5f-772c-43c3-901f-eba28f6bb40e/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:35:43,133 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_671edd5f-772c-43c3-901f-eba28f6bb40e/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 18:35:43,139 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_671edd5f-772c-43c3-901f-eba28f6bb40e/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 18:35:43,169 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 18:35:43,169 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-12-02 18:35:43,169 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-02 18:35:43,170 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-02 18:35:43,170 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 18:35:43,170 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 18:35:43,238 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 18:35:43,240 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 18:35:48,243 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 18:35:48,307 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 18:35:48,308 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-02 18:35:48,308 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 06:35:48 BoogieIcfgContainer [2023-12-02 18:35:48,309 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 18:35:48,311 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 18:35:48,312 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 18:35:48,315 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 18:35:48,315 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 06:35:42" (1/3) ... [2023-12-02 18:35:48,316 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6698ae3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 06:35:48, skipping insertion in model container [2023-12-02 18:35:48,317 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:35:43" (2/3) ... [2023-12-02 18:35:48,318 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6698ae3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 06:35:48, skipping insertion in model container [2023-12-02 18:35:48,318 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 06:35:48" (3/3) ... [2023-12-02 18:35:48,319 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount25_file-20.i [2023-12-02 18:35:48,338 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 18:35:48,338 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-02 18:35:48,380 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 18:35:48,387 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;@7c54738c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 18:35:48,387 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-02 18:35:48,391 INFO L276 IsEmpty]: Start isEmpty. Operand has 30 states, 21 states have (on average 1.5238095238095237) internal successors, (32), 22 states have internal predecessors, (32), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-12-02 18:35:48,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-12-02 18:35:48,400 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:35:48,401 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 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 18:35:48,402 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 18:35:48,407 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:35:48,407 INFO L85 PathProgramCache]: Analyzing trace with hash 1052916261, now seen corresponding path program 1 times [2023-12-02 18:35:48,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 18:35:48,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1938396600] [2023-12-02 18:35:48,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:35:48,419 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 18:35:48,419 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_671edd5f-772c-43c3-901f-eba28f6bb40e/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 18:35:48,421 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_671edd5f-772c-43c3-901f-eba28f6bb40e/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 18:35:48,427 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_671edd5f-772c-43c3-901f-eba28f6bb40e/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 18:35:48,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:35:48,868 INFO L262 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-02 18:35:48,874 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:35:48,900 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2023-12-02 18:35:48,900 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 18:35:48,900 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 18:35:48,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1938396600] [2023-12-02 18:35:48,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1938396600] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:35:48,901 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 18:35:48,901 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 18:35:48,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277123905] [2023-12-02 18:35:48,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:35:48,906 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-02 18:35:48,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 18:35:48,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-02 18:35:48,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-02 18:35:48,936 INFO L87 Difference]: Start difference. First operand has 30 states, 21 states have (on average 1.5238095238095237) internal successors, (32), 22 states have internal predecessors, (32), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 2 states, 2 states have (on average 11.0) internal successors, (22), 2 states have internal predecessors, (22), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-12-02 18:35:51,114 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 18:35:51,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:35:51,115 INFO L93 Difference]: Finished difference Result 57 states and 92 transitions. [2023-12-02 18:35:51,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-02 18:35:51,163 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 11.0) internal successors, (22), 2 states have internal predecessors, (22), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 45 [2023-12-02 18:35:51,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:35:51,170 INFO L225 Difference]: With dead ends: 57 [2023-12-02 18:35:51,171 INFO L226 Difference]: Without dead ends: 28 [2023-12-02 18:35:51,173 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 44 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 18:35:51,177 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-12-02 18:35:51,178 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 36 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 1 Unknown, 0 Unchecked, 2.2s Time] [2023-12-02 18:35:51,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2023-12-02 18:35:51,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2023-12-02 18:35:51,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 20 states have (on average 1.35) internal successors, (27), 20 states have internal predecessors, (27), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-12-02 18:35:51,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 39 transitions. [2023-12-02 18:35:51,215 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 39 transitions. Word has length 45 [2023-12-02 18:35:51,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:35:51,216 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 39 transitions. [2023-12-02 18:35:51,216 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 11.0) internal successors, (22), 2 states have internal predecessors, (22), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-12-02 18:35:51,217 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 39 transitions. [2023-12-02 18:35:51,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-12-02 18:35:51,219 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:35:51,220 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 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 18:35:51,240 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_671edd5f-772c-43c3-901f-eba28f6bb40e/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 18:35:51,425 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_671edd5f-772c-43c3-901f-eba28f6bb40e/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 18:35:51,425 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 18:35:51,426 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:35:51,426 INFO L85 PathProgramCache]: Analyzing trace with hash -765164323, now seen corresponding path program 1 times [2023-12-02 18:35:51,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 18:35:51,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1431646364] [2023-12-02 18:35:51,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:35:51,427 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 18:35:51,427 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_671edd5f-772c-43c3-901f-eba28f6bb40e/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 18:35:51,428 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_671edd5f-772c-43c3-901f-eba28f6bb40e/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 18:35:51,429 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_671edd5f-772c-43c3-901f-eba28f6bb40e/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 18:35:51,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:35:51,851 INFO L262 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-02 18:35:51,854 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:35:51,882 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2023-12-02 18:35:51,882 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 18:35:51,883 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 18:35:51,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1431646364] [2023-12-02 18:35:51,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1431646364] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:35:51,884 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 18:35:51,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 18:35:51,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205850916] [2023-12-02 18:35:51,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:35:51,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 18:35:51,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 18:35:51,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 18:35:51,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 18:35:51,888 INFO L87 Difference]: Start difference. First operand 28 states and 39 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2023-12-02 18:35:54,219 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.96s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 18:35:56,378 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 18:35:58,381 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 18:36:00,384 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 18:36:00,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:36:00,387 INFO L93 Difference]: Finished difference Result 64 states and 89 transitions. [2023-12-02 18:36:00,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 18:36:00,428 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 45 [2023-12-02 18:36:00,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:36:00,429 INFO L225 Difference]: With dead ends: 64 [2023-12-02 18:36:00,429 INFO L226 Difference]: Without dead ends: 37 [2023-12-02 18:36:00,430 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 43 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 18:36:00,432 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 11 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 4 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.5s IncrementalHoareTripleChecker+Time [2023-12-02 18:36:00,433 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 60 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 10 Invalid, 3 Unknown, 0 Unchecked, 8.5s Time] [2023-12-02 18:36:00,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2023-12-02 18:36:00,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 30. [2023-12-02 18:36:00,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 22 states have (on average 1.3181818181818181) internal successors, (29), 22 states have internal predecessors, (29), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-12-02 18:36:00,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 41 transitions. [2023-12-02 18:36:00,440 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 41 transitions. Word has length 45 [2023-12-02 18:36:00,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:36:00,441 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 41 transitions. [2023-12-02 18:36:00,441 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2023-12-02 18:36:00,442 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 41 transitions. [2023-12-02 18:36:00,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-12-02 18:36:00,443 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:36:00,443 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 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 18:36:00,453 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_671edd5f-772c-43c3-901f-eba28f6bb40e/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 18:36:00,644 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_671edd5f-772c-43c3-901f-eba28f6bb40e/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 18:36:00,645 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 18:36:00,647 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:36:00,648 INFO L85 PathProgramCache]: Analyzing trace with hash 1009843039, now seen corresponding path program 1 times [2023-12-02 18:36:00,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 18:36:00,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [164010971] [2023-12-02 18:36:00,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:36:00,652 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 18:36:00,652 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_671edd5f-772c-43c3-901f-eba28f6bb40e/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 18:36:00,656 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_671edd5f-772c-43c3-901f-eba28f6bb40e/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 18:36:00,659 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_671edd5f-772c-43c3-901f-eba28f6bb40e/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 18:36:01,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:36:01,134 INFO L262 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-02 18:36:01,138 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:45:54,390 WARN L293 SmtUtils]: Spent 5.01s on a formula simplification that was a NOOP. DAG size: 3 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify)