./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount10_file-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9bd2c7ff 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_c39120b3-110b-405c-ae32-485cedd5d209/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c39120b3-110b-405c-ae32-485cedd5d209/bin/utaipan-verify-t7M7D8N6sZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c39120b3-110b-405c-ae32-485cedd5d209/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c39120b3-110b-405c-ae32-485cedd5d209/bin/utaipan-verify-t7M7D8N6sZ/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount10_file-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c39120b3-110b-405c-ae32-485cedd5d209/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c39120b3-110b-405c-ae32-485cedd5d209/bin/utaipan-verify-t7M7D8N6sZ --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 02ce82ba0ace3f5b040163bfedd713ab4e5a143077898ba922a6491fc85c9af7 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 04:56:09,096 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 04:56:09,205 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c39120b3-110b-405c-ae32-485cedd5d209/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-11-19 04:56:09,213 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 04:56:09,214 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 04:56:09,264 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 04:56:09,265 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 04:56:09,266 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 04:56:09,268 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 04:56:09,274 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 04:56:09,275 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 04:56:09,276 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 04:56:09,277 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 04:56:09,279 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-19 04:56:09,280 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 04:56:09,280 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 04:56:09,281 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-19 04:56:09,281 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-19 04:56:09,282 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 04:56:09,283 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-19 04:56:09,284 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-19 04:56:09,284 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-19 04:56:09,286 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 04:56:09,287 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 04:56:09,287 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 04:56:09,288 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 04:56:09,288 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 04:56:09,289 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 04:56:09,290 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 04:56:09,290 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 04:56:09,292 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 04:56:09,292 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 04:56:09,293 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 04:56:09,293 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 04:56:09,294 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 04:56:09,294 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 04:56:09,294 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 04:56:09,295 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 04:56:09,295 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 04:56:09,296 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 04:56:09,296 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-19 04:56:09,296 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 04:56:09,297 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 04:56:09,297 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 04:56:09,299 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 04:56:09,299 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_c39120b3-110b-405c-ae32-485cedd5d209/bin/utaipan-verify-t7M7D8N6sZ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c39120b3-110b-405c-ae32-485cedd5d209/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 02ce82ba0ace3f5b040163bfedd713ab4e5a143077898ba922a6491fc85c9af7 [2023-11-19 04:56:09,666 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 04:56:09,713 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 04:56:09,716 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 04:56:09,718 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 04:56:09,719 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 04:56:09,721 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c39120b3-110b-405c-ae32-485cedd5d209/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount10_file-1.i [2023-11-19 04:56:12,937 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 04:56:13,170 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 04:56:13,170 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c39120b3-110b-405c-ae32-485cedd5d209/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount10_file-1.i [2023-11-19 04:56:13,182 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c39120b3-110b-405c-ae32-485cedd5d209/bin/utaipan-verify-t7M7D8N6sZ/data/9dc55ab72/fd933f1dbffa4a0c86bbae2033b19702/FLAG0a686c7e6 [2023-11-19 04:56:13,207 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c39120b3-110b-405c-ae32-485cedd5d209/bin/utaipan-verify-t7M7D8N6sZ/data/9dc55ab72/fd933f1dbffa4a0c86bbae2033b19702 [2023-11-19 04:56:13,209 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 04:56:13,211 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 04:56:13,213 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 04:56:13,213 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 04:56:13,226 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 04:56:13,226 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:56:13" (1/1) ... [2023-11-19 04:56:13,229 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b63a2ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:56:13, skipping insertion in model container [2023-11-19 04:56:13,229 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:56:13" (1/1) ... [2023-11-19 04:56:13,270 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 04:56:13,421 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_c39120b3-110b-405c-ae32-485cedd5d209/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount10_file-1.i[914,927] [2023-11-19 04:56:13,450 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:56:13,466 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 04:56:13,489 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_c39120b3-110b-405c-ae32-485cedd5d209/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount10_file-1.i[914,927] [2023-11-19 04:56:13,510 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:56:13,529 INFO L206 MainTranslator]: Completed translation [2023-11-19 04:56:13,530 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:56:13 WrapperNode [2023-11-19 04:56:13,530 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 04:56:13,531 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 04:56:13,531 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 04:56:13,532 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 04:56:13,539 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:56:13" (1/1) ... [2023-11-19 04:56:13,548 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:56:13" (1/1) ... [2023-11-19 04:56:13,585 INFO L138 Inliner]: procedures = 26, calls = 23, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 78 [2023-11-19 04:56:13,586 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 04:56:13,587 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 04:56:13,587 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 04:56:13,587 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 04:56:13,599 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:56:13" (1/1) ... [2023-11-19 04:56:13,599 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:56:13" (1/1) ... [2023-11-19 04:56:13,601 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:56:13" (1/1) ... [2023-11-19 04:56:13,601 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:56:13" (1/1) ... [2023-11-19 04:56:13,606 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:56:13" (1/1) ... [2023-11-19 04:56:13,610 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:56:13" (1/1) ... [2023-11-19 04:56:13,611 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:56:13" (1/1) ... [2023-11-19 04:56:13,613 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:56:13" (1/1) ... [2023-11-19 04:56:13,615 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 04:56:13,617 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 04:56:13,617 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 04:56:13,617 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 04:56:13,618 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:56:13" (1/1) ... [2023-11-19 04:56:13,632 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 04:56:13,649 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c39120b3-110b-405c-ae32-485cedd5d209/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:56:13,674 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c39120b3-110b-405c-ae32-485cedd5d209/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 04:56:13,696 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c39120b3-110b-405c-ae32-485cedd5d209/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 04:56:13,721 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 04:56:13,721 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-19 04:56:13,722 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-19 04:56:13,722 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 04:56:13,722 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 04:56:13,722 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 04:56:13,833 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 04:56:13,837 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 04:56:14,121 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 04:56:14,212 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 04:56:14,212 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-19 04:56:14,223 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:56:14 BoogieIcfgContainer [2023-11-19 04:56:14,223 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 04:56:14,226 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 04:56:14,226 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 04:56:14,230 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 04:56:14,230 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 04:56:13" (1/3) ... [2023-11-19 04:56:14,231 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64bb56ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:56:14, skipping insertion in model container [2023-11-19 04:56:14,231 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:56:13" (2/3) ... [2023-11-19 04:56:14,231 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64bb56ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:56:14, skipping insertion in model container [2023-11-19 04:56:14,231 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:56:14" (3/3) ... [2023-11-19 04:56:14,233 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount10_file-1.i [2023-11-19 04:56:14,255 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 04:56:14,256 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-19 04:56:14,311 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 04:56:14,319 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;@4c0e2361, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-19 04:56:14,319 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-19 04:56:14,324 INFO L276 IsEmpty]: Start isEmpty. Operand has 25 states, 12 states have (on average 1.25) internal successors, (15), 13 states have internal predecessors, (15), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-11-19 04:56:14,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-11-19 04:56:14,336 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:56:14,337 INFO L195 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:56:14,337 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 04:56:14,344 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:56:14,344 INFO L85 PathProgramCache]: Analyzing trace with hash 1968264541, now seen corresponding path program 1 times [2023-11-19 04:56:14,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:56:14,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390225287] [2023-11-19 04:56:14,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:56:14,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:56:14,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 04:56:14,618 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 04:56:14,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 04:56:14,882 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-11-19 04:56:14,886 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-19 04:56:14,888 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-19 04:56:14,890 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 04:56:14,896 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-11-19 04:56:14,906 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-19 04:56:14,996 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 04:56:14 BoogieIcfgContainer [2023-11-19 04:56:14,996 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-19 04:56:14,999 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-19 04:56:14,999 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-19 04:56:14,999 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-19 04:56:15,000 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:56:14" (3/4) ... [2023-11-19 04:56:15,003 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-19 04:56:15,005 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-19 04:56:15,006 INFO L158 Benchmark]: Toolchain (without parser) took 1794.96ms. Allocated memory is still 172.0MB. Free memory was 142.8MB in the beginning and 107.7MB in the end (delta: 35.1MB). Peak memory consumption was 32.9MB. Max. memory is 16.1GB. [2023-11-19 04:56:15,007 INFO L158 Benchmark]: CDTParser took 0.34ms. Allocated memory is still 121.6MB. Free memory is still 93.5MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 04:56:15,009 INFO L158 Benchmark]: CACSL2BoogieTranslator took 317.78ms. Allocated memory is still 172.0MB. Free memory was 142.8MB in the beginning and 131.6MB in the end (delta: 11.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-19 04:56:15,011 INFO L158 Benchmark]: Boogie Procedure Inliner took 54.95ms. Allocated memory is still 172.0MB. Free memory was 131.6MB in the beginning and 129.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 04:56:15,012 INFO L158 Benchmark]: Boogie Preprocessor took 28.63ms. Allocated memory is still 172.0MB. Free memory was 129.5MB in the beginning and 128.2MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 04:56:15,022 INFO L158 Benchmark]: RCFGBuilder took 606.54ms. Allocated memory is still 172.0MB. Free memory was 128.2MB in the beginning and 132.1MB in the end (delta: -3.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-19 04:56:15,024 INFO L158 Benchmark]: TraceAbstraction took 770.62ms. Allocated memory is still 172.0MB. Free memory was 131.6MB in the beginning and 107.7MB in the end (delta: 23.9MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2023-11-19 04:56:15,024 INFO L158 Benchmark]: Witness Printer took 6.49ms. Allocated memory is still 172.0MB. Free memory is still 107.7MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 04:56:15,035 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34ms. Allocated memory is still 121.6MB. Free memory is still 93.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 317.78ms. Allocated memory is still 172.0MB. Free memory was 142.8MB in the beginning and 131.6MB in the end (delta: 11.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 54.95ms. Allocated memory is still 172.0MB. Free memory was 131.6MB in the beginning and 129.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 28.63ms. Allocated memory is still 172.0MB. Free memory was 129.5MB in the beginning and 128.2MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 606.54ms. Allocated memory is still 172.0MB. Free memory was 128.2MB in the beginning and 132.1MB in the end (delta: -3.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 770.62ms. Allocated memory is still 172.0MB. Free memory was 131.6MB in the beginning and 107.7MB in the end (delta: 23.9MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Witness Printer took 6.49ms. Allocated memory is still 172.0MB. Free memory is still 107.7MB. 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 someBinaryFLOATComparisonOperation at line 38, overapproximation of someUnaryFLOAToperation at line 39. Possible FailurePath: [L21] unsigned char isInitial = 0; [L22] float var_1_1 = 9.8; [L23] float var_1_2 = 10.375; [L24] float var_1_4 = 256.2; [L25] unsigned long int var_1_5 = 8; [L26] unsigned long int var_1_6 = 3674304896; [L27] unsigned long int var_1_7 = 8; [L28] unsigned char var_1_8 = 0; [L29] unsigned char var_1_9 = 0; [L30] signed short int var_1_10 = -25; [L31] signed short int var_1_11 = -5; [L67] isInitial = 1 [L68] FCALL initially() [L69] COND TRUE 1 [L70] FCALL updateLastVariables() [L71] CALL updateVariables() [L43] var_1_2 = __VERIFIER_nondet_float() [L44] CALL assume_abort_if_not((var_1_2 >= -922337.2036854776000e+13F && var_1_2 <= -1.0e-20F) || (var_1_2 <= 9223372.036854776000e+12F && var_1_2 >= 1.0e-20F )) VAL [\old(cond)=1, isInitial=1, var_1_10=-25, var_1_11=-5, var_1_1=49/5, var_1_4=1281/5, var_1_5=8, var_1_6=3674304896, var_1_7=8, var_1_8=0, var_1_9=0] [L20] COND FALSE !(!cond) [L44] RET assume_abort_if_not((var_1_2 >= -922337.2036854776000e+13F && var_1_2 <= -1.0e-20F) || (var_1_2 <= 9223372.036854776000e+12F && var_1_2 >= 1.0e-20F )) VAL [isInitial=1, var_1_10=-25, var_1_11=-5, var_1_1=49/5, var_1_4=1281/5, var_1_5=8, var_1_6=3674304896, var_1_7=8, var_1_8=0, var_1_9=0] [L45] var_1_4 = __VERIFIER_nondet_float() [L46] CALL assume_abort_if_not((var_1_4 >= -922337.2036854765600e+13F && var_1_4 <= -1.0e-20F) || (var_1_4 <= 9223372.036854765600e+12F && var_1_4 >= 1.0e-20F )) VAL [\old(cond)=1, isInitial=1, var_1_10=-25, var_1_11=-5, var_1_1=49/5, var_1_4=49/5, var_1_5=8, var_1_6=3674304896, var_1_7=8, var_1_8=0, var_1_9=0] [L20] COND FALSE !(!cond) [L46] RET assume_abort_if_not((var_1_4 >= -922337.2036854765600e+13F && var_1_4 <= -1.0e-20F) || (var_1_4 <= 9223372.036854765600e+12F && var_1_4 >= 1.0e-20F )) VAL [isInitial=1, var_1_10=-25, var_1_11=-5, var_1_1=49/5, var_1_4=49/5, var_1_5=8, var_1_6=3674304896, var_1_7=8, var_1_8=0, var_1_9=0] [L47] var_1_6 = __VERIFIER_nondet_ulong() [L48] CALL assume_abort_if_not(var_1_6 >= 2147483647) VAL [\old(cond)=1, isInitial=1, var_1_10=-25, var_1_11=-5, var_1_1=49/5, var_1_4=49/5, var_1_5=8, var_1_6=4294967294, var_1_7=8, var_1_8=0, var_1_9=0] [L20] COND FALSE !(!cond) [L48] RET assume_abort_if_not(var_1_6 >= 2147483647) VAL [isInitial=1, var_1_10=-25, var_1_11=-5, var_1_1=49/5, var_1_4=49/5, var_1_5=8, var_1_6=4294967294, var_1_7=8, var_1_8=0, var_1_9=0] [L49] CALL assume_abort_if_not(var_1_6 <= 4294967294) VAL [\old(cond)=1, isInitial=1, var_1_10=-25, var_1_11=-5, var_1_1=49/5, var_1_4=49/5, var_1_5=8, var_1_6=4294967294, var_1_7=8, var_1_8=0, var_1_9=0] [L20] COND FALSE !(!cond) [L49] RET assume_abort_if_not(var_1_6 <= 4294967294) VAL [isInitial=1, var_1_10=-25, var_1_11=-5, var_1_1=49/5, var_1_4=49/5, var_1_5=8, var_1_6=4294967294, var_1_7=8, var_1_8=0, var_1_9=0] [L50] var_1_7 = __VERIFIER_nondet_ulong() [L51] CALL assume_abort_if_not(var_1_7 >= 0) VAL [\old(cond)=1, isInitial=1, var_1_10=-25, var_1_11=-5, var_1_1=49/5, var_1_4=49/5, var_1_5=8, var_1_6=4294967294, var_1_7=4294966794, var_1_8=0, var_1_9=0] [L20] COND FALSE !(!cond) [L51] RET assume_abort_if_not(var_1_7 >= 0) VAL [isInitial=1, var_1_10=-25, var_1_11=-5, var_1_1=49/5, var_1_4=49/5, var_1_5=8, var_1_6=4294967294, var_1_7=4294966794, var_1_8=0, var_1_9=0] [L52] CALL assume_abort_if_not(var_1_7 <= 4294967294) VAL [\old(cond)=1, isInitial=1, var_1_10=-25, var_1_11=-5, var_1_1=49/5, var_1_4=49/5, var_1_5=8, var_1_6=4294967294, var_1_7=4294966794, var_1_8=0, var_1_9=0] [L20] COND FALSE !(!cond) [L52] RET assume_abort_if_not(var_1_7 <= 4294967294) VAL [isInitial=1, var_1_10=-25, var_1_11=-5, var_1_1=49/5, var_1_4=49/5, var_1_5=8, var_1_6=4294967294, var_1_7=4294966794, var_1_8=0, var_1_9=0] [L53] var_1_9 = __VERIFIER_nondet_uchar() [L54] CALL assume_abort_if_not(var_1_9 >= 0) VAL [\old(cond)=1, isInitial=1, var_1_10=-25, var_1_11=-5, var_1_1=49/5, var_1_4=49/5, var_1_5=8, var_1_6=4294967294, var_1_7=4294966794, var_1_8=0, var_1_9=0] [L20] COND FALSE !(!cond) [L54] RET assume_abort_if_not(var_1_9 >= 0) VAL [isInitial=1, var_1_10=-25, var_1_11=-5, var_1_1=49/5, var_1_4=49/5, var_1_5=8, var_1_6=4294967294, var_1_7=4294966794, var_1_8=0, var_1_9=0] [L55] CALL assume_abort_if_not(var_1_9 <= 0) VAL [\old(cond)=1, isInitial=1, var_1_10=-25, var_1_11=-5, var_1_1=49/5, var_1_4=49/5, var_1_5=8, var_1_6=4294967294, var_1_7=4294966794, var_1_8=0, var_1_9=0] [L20] COND FALSE !(!cond) [L55] RET assume_abort_if_not(var_1_9 <= 0) VAL [isInitial=1, var_1_10=-25, var_1_11=-5, var_1_1=49/5, var_1_4=49/5, var_1_5=8, var_1_6=4294967294, var_1_7=4294966794, var_1_8=0, var_1_9=0] [L56] var_1_11 = __VERIFIER_nondet_short() [L57] CALL assume_abort_if_not(var_1_11 >= -32767) VAL [\old(cond)=1, isInitial=1, var_1_10=-25, var_1_11=32766, var_1_1=49/5, var_1_4=49/5, var_1_5=8, var_1_6=4294967294, var_1_7=4294966794, var_1_8=0, var_1_9=0] [L20] COND FALSE !(!cond) [L57] RET assume_abort_if_not(var_1_11 >= -32767) VAL [isInitial=1, var_1_10=-25, var_1_11=32766, var_1_1=49/5, var_1_4=49/5, var_1_5=8, var_1_6=4294967294, var_1_7=4294966794, var_1_8=0, var_1_9=0] [L58] CALL assume_abort_if_not(var_1_11 <= 32766) VAL [\old(cond)=1, isInitial=1, var_1_10=-25, var_1_11=32766, var_1_1=49/5, var_1_4=49/5, var_1_5=8, var_1_6=4294967294, var_1_7=4294966794, var_1_8=0, var_1_9=0] [L20] COND FALSE !(!cond) [L58] RET assume_abort_if_not(var_1_11 <= 32766) VAL [isInitial=1, var_1_10=-25, var_1_11=32766, var_1_1=49/5, var_1_4=49/5, var_1_5=8, var_1_6=4294967294, var_1_7=4294966794, var_1_8=0, var_1_9=0] [L71] RET updateVariables() [L72] CALL step() [L35] var_1_5 = (((((var_1_6 - 500u)) < (var_1_7)) ? ((var_1_6 - 500u)) : (var_1_7))) [L36] var_1_8 = var_1_9 [L37] var_1_10 = var_1_11 [L38] COND TRUE (var_1_2 <= 8.75f) || var_1_8 [L39] var_1_1 = ((((var_1_4) < 0 ) ? -(var_1_4) : (var_1_4))) [L72] RET step() [L73] CALL, EXPR property() [L63-L64] return (((((var_1_2 <= 8.75f) || var_1_8) ? (var_1_1 == ((float) ((((var_1_4) < 0 ) ? -(var_1_4) : (var_1_4))))) : 1) && (var_1_5 == ((unsigned long int) (((((var_1_6 - 500u)) < (var_1_7)) ? ((var_1_6 - 500u)) : (var_1_7)))))) && (var_1_8 == ((unsigned char) var_1_9))) && (var_1_10 == ((signed short int) var_1_11)) ; [L73] RET, EXPR property() [L73] CALL __VERIFIER_assert(property()) [L19] COND TRUE !(cond) VAL [\old(cond)=0, cond=0, isInitial=1, var_1_10=32766, var_1_11=32766, var_1_1=49/5, var_1_4=49/5, var_1_5=4294966794, var_1_6=4294967294, var_1_7=4294966794, var_1_8=0, var_1_9=0] [L19] reach_error() VAL [\old(cond)=0, cond=0, isInitial=1, var_1_10=32766, var_1_11=32766, var_1_1=49/5, var_1_4=49/5, var_1_5=4294966794, var_1_6=4294967294, var_1_7=4294966794, var_1_8=0, var_1_9=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 25 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.6s, OverallIterations: 1, TraceHistogramMax: 10, 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=25occurred 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, 40 NumberOfCodeBlocks, 40 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2023-11-19 04:56:15,083 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c39120b3-110b-405c-ae32-485cedd5d209/bin/utaipan-verify-t7M7D8N6sZ/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_c39120b3-110b-405c-ae32-485cedd5d209/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c39120b3-110b-405c-ae32-485cedd5d209/bin/utaipan-verify-t7M7D8N6sZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c39120b3-110b-405c-ae32-485cedd5d209/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c39120b3-110b-405c-ae32-485cedd5d209/bin/utaipan-verify-t7M7D8N6sZ/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount10_file-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c39120b3-110b-405c-ae32-485cedd5d209/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c39120b3-110b-405c-ae32-485cedd5d209/bin/utaipan-verify-t7M7D8N6sZ --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 02ce82ba0ace3f5b040163bfedd713ab4e5a143077898ba922a6491fc85c9af7 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 04:56:18,088 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 04:56:18,238 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c39120b3-110b-405c-ae32-485cedd5d209/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2023-11-19 04:56:18,248 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 04:56:18,249 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 04:56:18,293 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 04:56:18,294 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 04:56:18,295 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 04:56:18,296 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 04:56:18,301 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 04:56:18,301 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 04:56:18,302 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 04:56:18,302 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 04:56:18,304 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 04:56:18,304 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 04:56:18,305 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 04:56:18,306 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 04:56:18,306 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 04:56:18,307 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 04:56:18,307 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 04:56:18,308 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 04:56:18,308 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 04:56:18,309 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 04:56:18,309 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 04:56:18,309 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-19 04:56:18,310 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-19 04:56:18,310 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-19 04:56:18,311 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 04:56:18,311 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 04:56:18,311 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 04:56:18,313 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 04:56:18,313 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 04:56:18,313 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 04:56:18,314 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 04:56:18,314 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 04:56:18,314 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 04:56:18,315 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 04:56:18,315 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-11-19 04:56:18,315 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-19 04:56:18,316 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 04:56:18,316 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 04:56:18,317 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 04:56:18,317 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_c39120b3-110b-405c-ae32-485cedd5d209/bin/utaipan-verify-t7M7D8N6sZ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c39120b3-110b-405c-ae32-485cedd5d209/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 02ce82ba0ace3f5b040163bfedd713ab4e5a143077898ba922a6491fc85c9af7 [2023-11-19 04:56:18,799 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 04:56:18,828 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 04:56:18,833 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 04:56:18,835 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 04:56:18,835 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 04:56:18,837 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c39120b3-110b-405c-ae32-485cedd5d209/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount10_file-1.i [2023-11-19 04:56:22,448 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 04:56:22,732 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 04:56:22,734 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c39120b3-110b-405c-ae32-485cedd5d209/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount10_file-1.i [2023-11-19 04:56:22,744 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c39120b3-110b-405c-ae32-485cedd5d209/bin/utaipan-verify-t7M7D8N6sZ/data/e52829dda/34a3e5a1a50a4df18e7834d6e6b66dfb/FLAGcbdd31670 [2023-11-19 04:56:22,758 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c39120b3-110b-405c-ae32-485cedd5d209/bin/utaipan-verify-t7M7D8N6sZ/data/e52829dda/34a3e5a1a50a4df18e7834d6e6b66dfb [2023-11-19 04:56:22,760 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 04:56:22,762 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 04:56:22,764 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 04:56:22,764 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 04:56:22,772 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 04:56:22,773 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:56:22" (1/1) ... [2023-11-19 04:56:22,774 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6cf207ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:56:22, skipping insertion in model container [2023-11-19 04:56:22,775 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:56:22" (1/1) ... [2023-11-19 04:56:22,802 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 04:56:22,948 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c39120b3-110b-405c-ae32-485cedd5d209/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount10_file-1.i[914,927] [2023-11-19 04:56:22,979 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:56:22,999 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 04:56:23,016 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_c39120b3-110b-405c-ae32-485cedd5d209/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount10_file-1.i[914,927] [2023-11-19 04:56:23,033 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:56:23,055 INFO L206 MainTranslator]: Completed translation [2023-11-19 04:56:23,056 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:56:23 WrapperNode [2023-11-19 04:56:23,056 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 04:56:23,057 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 04:56:23,058 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 04:56:23,058 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 04:56:23,067 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:56:23" (1/1) ... [2023-11-19 04:56:23,081 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:56:23" (1/1) ... [2023-11-19 04:56:23,108 INFO L138 Inliner]: procedures = 27, calls = 23, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 77 [2023-11-19 04:56:23,108 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 04:56:23,109 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 04:56:23,109 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 04:56:23,110 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 04:56:23,118 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:56:23" (1/1) ... [2023-11-19 04:56:23,118 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:56:23" (1/1) ... [2023-11-19 04:56:23,123 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:56:23" (1/1) ... [2023-11-19 04:56:23,123 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:56:23" (1/1) ... [2023-11-19 04:56:23,133 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:56:23" (1/1) ... [2023-11-19 04:56:23,137 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:56:23" (1/1) ... [2023-11-19 04:56:23,140 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:56:23" (1/1) ... [2023-11-19 04:56:23,142 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:56:23" (1/1) ... [2023-11-19 04:56:23,146 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 04:56:23,147 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 04:56:23,148 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 04:56:23,148 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 04:56:23,149 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:56:23" (1/1) ... [2023-11-19 04:56:23,156 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 04:56:23,180 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c39120b3-110b-405c-ae32-485cedd5d209/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:56:23,193 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c39120b3-110b-405c-ae32-485cedd5d209/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 04:56:23,210 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c39120b3-110b-405c-ae32-485cedd5d209/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 04:56:23,259 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 04:56:23,260 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-19 04:56:23,260 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-19 04:56:23,260 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-19 04:56:23,260 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 04:56:23,261 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 04:56:23,365 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 04:56:23,367 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 04:56:23,693 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 04:56:23,703 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 04:56:23,703 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-19 04:56:23,707 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:56:23 BoogieIcfgContainer [2023-11-19 04:56:23,707 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 04:56:23,709 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 04:56:23,709 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 04:56:23,713 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 04:56:23,713 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 04:56:22" (1/3) ... [2023-11-19 04:56:23,714 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@81e2e41 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:56:23, skipping insertion in model container [2023-11-19 04:56:23,714 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:56:23" (2/3) ... [2023-11-19 04:56:23,715 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@81e2e41 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:56:23, skipping insertion in model container [2023-11-19 04:56:23,715 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:56:23" (3/3) ... [2023-11-19 04:56:23,716 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount10_file-1.i [2023-11-19 04:56:23,738 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 04:56:23,738 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-19 04:56:23,813 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 04:56:23,822 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;@62392a8a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-19 04:56:23,822 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-19 04:56:23,828 INFO L276 IsEmpty]: Start isEmpty. Operand has 36 states, 23 states have (on average 1.2608695652173914) internal successors, (29), 24 states have internal predecessors, (29), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-11-19 04:56:23,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-11-19 04:56:23,841 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:56:23,842 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:56:23,845 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 04:56:23,852 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:56:23,852 INFO L85 PathProgramCache]: Analyzing trace with hash -1042403981, now seen corresponding path program 1 times [2023-11-19 04:56:23,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 04:56:23,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1521457168] [2023-11-19 04:56:23,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:56:23,866 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 04:56:23,866 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c39120b3-110b-405c-ae32-485cedd5d209/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 04:56:23,867 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c39120b3-110b-405c-ae32-485cedd5d209/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-19 04:56:23,892 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c39120b3-110b-405c-ae32-485cedd5d209/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-11-19 04:56:24,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:56:24,205 INFO L262 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-19 04:56:24,228 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:56:35,176 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 43 proven. 24 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2023-11-19 04:56:35,176 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 04:56:45,062 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 3 proven. 24 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2023-11-19 04:56:45,063 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 04:56:45,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1521457168] [2023-11-19 04:56:45,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1521457168] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 04:56:45,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [170894521] [2023-11-19 04:56:45,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:56:45,065 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-19 04:56:45,066 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c39120b3-110b-405c-ae32-485cedd5d209/bin/utaipan-verify-t7M7D8N6sZ/cvc4 [2023-11-19 04:56:45,069 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c39120b3-110b-405c-ae32-485cedd5d209/bin/utaipan-verify-t7M7D8N6sZ/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-19 04:56:45,078 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c39120b3-110b-405c-ae32-485cedd5d209/bin/utaipan-verify-t7M7D8N6sZ/cvc4 --incremental --print-success --lang smt (3)] Waiting until timeout for monitored process [2023-11-19 04:56:45,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:56:45,650 INFO L262 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-19 04:56:45,657 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:56:51,858 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 43 proven. 24 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2023-11-19 04:56:51,858 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 04:56:56,489 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 3 proven. 24 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2023-11-19 04:56:56,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [170894521] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 04:56:56,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1060718125] [2023-11-19 04:56:56,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:56:56,491 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:56:56,491 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c39120b3-110b-405c-ae32-485cedd5d209/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:56:56,494 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c39120b3-110b-405c-ae32-485cedd5d209/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 04:56:56,498 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c39120b3-110b-405c-ae32-485cedd5d209/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-19 04:56:56,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:56:56,591 INFO L262 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-19 04:56:56,597 INFO L285 TraceCheckSpWp]: Computing forward predicates...