./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/freire2_valuebound2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6016e2ab-c8ef-4d39-b4c9-367410d910b6/bin/utaipan-SDwSMHVbGG/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6016e2ab-c8ef-4d39-b4c9-367410d910b6/bin/utaipan-SDwSMHVbGG/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6016e2ab-c8ef-4d39-b4c9-367410d910b6/bin/utaipan-SDwSMHVbGG/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6016e2ab-c8ef-4d39-b4c9-367410d910b6/bin/utaipan-SDwSMHVbGG/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/freire2_valuebound2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6016e2ab-c8ef-4d39-b4c9-367410d910b6/bin/utaipan-SDwSMHVbGG/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6016e2ab-c8ef-4d39-b4c9-367410d910b6/bin/utaipan-SDwSMHVbGG --witnessprinter.witness.filename witness.graphml --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 d2d6f9be66d27a1c9d3b3eaba0ccd86a9e6d263d5b40883199c2e280efc7ebbe ................................................................................................................................................................................................................................................................................. Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6016e2ab-c8ef-4d39-b4c9-367410d910b6/bin/utaipan-SDwSMHVbGG/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6016e2ab-c8ef-4d39-b4c9-367410d910b6/bin/utaipan-SDwSMHVbGG/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6016e2ab-c8ef-4d39-b4c9-367410d910b6/bin/utaipan-SDwSMHVbGG/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6016e2ab-c8ef-4d39-b4c9-367410d910b6/bin/utaipan-SDwSMHVbGG/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/freire2_valuebound2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6016e2ab-c8ef-4d39-b4c9-367410d910b6/bin/utaipan-SDwSMHVbGG/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6016e2ab-c8ef-4d39-b4c9-367410d910b6/bin/utaipan-SDwSMHVbGG --witnessprinter.witness.filename witness.graphml --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 d2d6f9be66d27a1c9d3b3eaba0ccd86a9e6d263d5b40883199c2e280efc7ebbe .................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-29 05:42:16,503 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-29 05:42:16,507 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-29 05:42:16,562 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-29 05:42:16,563 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-29 05:42:16,565 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-29 05:42:16,567 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-29 05:42:16,570 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-29 05:42:16,572 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-29 05:42:16,574 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-29 05:42:16,575 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-29 05:42:16,577 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-29 05:42:16,577 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-29 05:42:16,579 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-29 05:42:16,581 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-29 05:42:16,583 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-29 05:42:16,585 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-29 05:42:16,586 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-29 05:42:16,589 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-29 05:42:16,592 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-29 05:42:16,595 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-29 05:42:16,597 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-29 05:42:16,599 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-29 05:42:16,600 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-29 05:42:16,605 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-29 05:42:16,617 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-29 05:42:16,617 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-29 05:42:16,619 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-29 05:42:16,622 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-29 05:42:16,629 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-29 05:42:16,630 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-29 05:42:16,631 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-29 05:42:16,632 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-29 05:42:16,633 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-29 05:42:16,636 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-29 05:42:16,638 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-29 05:42:16,640 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-29 05:42:16,641 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-29 05:42:16,641 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-29 05:42:16,642 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-29 05:42:16,643 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-29 05:42:16,644 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6016e2ab-c8ef-4d39-b4c9-367410d910b6/bin/utaipan-SDwSMHVbGG/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-29 05:42:16,685 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-29 05:42:16,685 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-29 05:42:16,688 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-29 05:42:16,688 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-29 05:42:16,688 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-29 05:42:16,689 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-29 05:42:16,689 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-29 05:42:16,689 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-29 05:42:16,697 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-29 05:42:16,697 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-29 05:42:16,698 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-29 05:42:16,699 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-29 05:42:16,699 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-29 05:42:16,699 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-29 05:42:16,700 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-29 05:42:16,701 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-29 05:42:16,701 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-29 05:42:16,701 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-29 05:42:16,702 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-29 05:42:16,702 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-29 05:42:16,702 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-29 05:42:16,702 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-29 05:42:16,703 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-29 05:42:16,703 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-29 05:42:16,703 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-29 05:42:16,703 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-29 05:42:16,704 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-29 05:42:16,704 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-29 05:42:16,704 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-29 05:42:16,705 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-29 05:42:16,705 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 05:42:16,705 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-29 05:42:16,706 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-29 05:42:16,706 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-29 05:42:16,706 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-29 05:42:16,707 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-29 05:42:16,707 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-29 05:42:16,707 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-29 05:42:16,707 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-29 05:42:16,708 INFO L138 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_6016e2ab-c8ef-4d39-b4c9-367410d910b6/bin/utaipan-SDwSMHVbGG/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6016e2ab-c8ef-4d39-b4c9-367410d910b6/bin/utaipan-SDwSMHVbGG Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d2d6f9be66d27a1c9d3b3eaba0ccd86a9e6d263d5b40883199c2e280efc7ebbe [2021-10-29 05:42:17,064 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-29 05:42:17,099 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-29 05:42:17,102 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-29 05:42:17,104 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-29 05:42:17,105 INFO L275 PluginConnector]: CDTParser initialized [2021-10-29 05:42:17,106 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6016e2ab-c8ef-4d39-b4c9-367410d910b6/bin/utaipan-SDwSMHVbGG/../../sv-benchmarks/c/nla-digbench-scaling/freire2_valuebound2.c [2021-10-29 05:42:17,174 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6016e2ab-c8ef-4d39-b4c9-367410d910b6/bin/utaipan-SDwSMHVbGG/data/760fa4abe/b45896c2979b456ca6a79a689e57c6d3/FLAG54b19472f [2021-10-29 05:42:17,738 INFO L306 CDTParser]: Found 1 translation units. [2021-10-29 05:42:17,738 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6016e2ab-c8ef-4d39-b4c9-367410d910b6/sv-benchmarks/c/nla-digbench-scaling/freire2_valuebound2.c [2021-10-29 05:42:17,746 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6016e2ab-c8ef-4d39-b4c9-367410d910b6/bin/utaipan-SDwSMHVbGG/data/760fa4abe/b45896c2979b456ca6a79a689e57c6d3/FLAG54b19472f [2021-10-29 05:42:18,094 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6016e2ab-c8ef-4d39-b4c9-367410d910b6/bin/utaipan-SDwSMHVbGG/data/760fa4abe/b45896c2979b456ca6a79a689e57c6d3 [2021-10-29 05:42:18,096 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-29 05:42:18,098 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-29 05:42:18,104 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-29 05:42:18,110 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-29 05:42:18,116 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-29 05:42:18,118 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:42:18" (1/1) ... [2021-10-29 05:42:18,120 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@57b903f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:42:18, skipping insertion in model container [2021-10-29 05:42:18,123 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:42:18" (1/1) ... [2021-10-29 05:42:18,131 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-29 05:42:18,155 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-29 05:42:18,320 WARN L228 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_6016e2ab-c8ef-4d39-b4c9-367410d910b6/sv-benchmarks/c/nla-digbench-scaling/freire2_valuebound2.c[709,722] [2021-10-29 05:42:18,347 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 05:42:18,365 INFO L203 MainTranslator]: Completed pre-run [2021-10-29 05:42:18,379 WARN L228 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_6016e2ab-c8ef-4d39-b4c9-367410d910b6/sv-benchmarks/c/nla-digbench-scaling/freire2_valuebound2.c[709,722] [2021-10-29 05:42:18,393 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 05:42:18,408 INFO L208 MainTranslator]: Completed translation [2021-10-29 05:42:18,417 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:42:18 WrapperNode [2021-10-29 05:42:18,417 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-29 05:42:18,419 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-29 05:42:18,419 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-29 05:42:18,419 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-29 05:42:18,429 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:42:18" (1/1) ... [2021-10-29 05:42:18,437 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:42:18" (1/1) ... [2021-10-29 05:42:18,463 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-29 05:42:18,464 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-29 05:42:18,465 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-29 05:42:18,465 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-29 05:42:18,475 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:42:18" (1/1) ... [2021-10-29 05:42:18,475 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:42:18" (1/1) ... [2021-10-29 05:42:18,477 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:42:18" (1/1) ... [2021-10-29 05:42:18,478 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:42:18" (1/1) ... [2021-10-29 05:42:18,486 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:42:18" (1/1) ... [2021-10-29 05:42:18,492 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:42:18" (1/1) ... [2021-10-29 05:42:18,494 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:42:18" (1/1) ... [2021-10-29 05:42:18,497 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-29 05:42:18,498 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-29 05:42:18,498 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-29 05:42:18,499 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-29 05:42:18,511 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:42:18" (1/1) ... [2021-10-29 05:42:18,521 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 05:42:18,538 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6016e2ab-c8ef-4d39-b4c9-367410d910b6/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 05:42:18,551 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6016e2ab-c8ef-4d39-b4c9-367410d910b6/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-29 05:42:18,574 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6016e2ab-c8ef-4d39-b4c9-367410d910b6/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-29 05:42:18,615 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-29 05:42:18,616 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-29 05:42:18,618 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-29 05:42:18,618 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-29 05:42:18,957 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-29 05:42:18,957 INFO L299 CfgBuilder]: Removed 19 assume(true) statements. [2021-10-29 05:42:18,960 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:42:18 BoogieIcfgContainer [2021-10-29 05:42:18,960 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-29 05:42:18,962 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-29 05:42:18,963 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-29 05:42:18,967 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-29 05:42:18,967 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 05:42:18" (1/3) ... [2021-10-29 05:42:18,968 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b61f770 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:42:18, skipping insertion in model container [2021-10-29 05:42:18,968 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:42:18" (2/3) ... [2021-10-29 05:42:18,969 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b61f770 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:42:18, skipping insertion in model container [2021-10-29 05:42:18,969 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:42:18" (3/3) ... [2021-10-29 05:42:18,971 INFO L111 eAbstractionObserver]: Analyzing ICFG freire2_valuebound2.c [2021-10-29 05:42:18,977 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-29 05:42:18,993 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-10-29 05:42:19,064 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-29 05:42:19,072 INFO L339 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=LoopsAndPotentialCycles, 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, mLoopAccelerationTechnique=FAST_UPR [2021-10-29 05:42:19,072 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-10-29 05:42:19,089 INFO L276 IsEmpty]: Start isEmpty. Operand has 28 states, 21 states have (on average 1.6666666666666667) internal successors, (35), 27 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:42:19,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-29 05:42:19,095 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:42:19,096 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-29 05:42:19,097 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-29 05:42:19,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:42:19,112 INFO L85 PathProgramCache]: Analyzing trace with hash 3980175, now seen corresponding path program 1 times [2021-10-29 05:42:19,123 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:42:19,133 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139561412] [2021-10-29 05:42:19,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:42:19,135 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:42:19,298 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-29 05:42:19,300 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [54933016] [2021-10-29 05:42:19,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:42:19,301 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 05:42:19,301 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6016e2ab-c8ef-4d39-b4c9-367410d910b6/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 05:42:19,304 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6016e2ab-c8ef-4d39-b4c9-367410d910b6/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-29 05:42:19,325 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6016e2ab-c8ef-4d39-b4c9-367410d910b6/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-29 05:42:19,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 05:42:19,422 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-29 05:42:19,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 05:42:19,480 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-10-29 05:42:19,484 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-10-29 05:42:19,485 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-29 05:42:19,490 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-29 05:42:19,491 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-10-29 05:42:19,492 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION [2021-10-29 05:42:19,494 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION [2021-10-29 05:42:19,495 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION [2021-10-29 05:42:19,543 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6016e2ab-c8ef-4d39-b4c9-367410d910b6/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-29 05:42:19,721 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6016e2ab-c8ef-4d39-b4c9-367410d910b6/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2021-10-29 05:42:19,724 INFO L731 BasicCegarLoop]: Path program histogram: [1] [2021-10-29 05:42:19,727 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-29 05:42:19,747 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.10 05:42:19 BoogieIcfgContainer [2021-10-29 05:42:19,747 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-29 05:42:19,748 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-29 05:42:19,748 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-29 05:42:19,748 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-29 05:42:19,749 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:42:18" (3/4) ... [2021-10-29 05:42:19,753 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-29 05:42:19,753 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-29 05:42:19,756 INFO L168 Benchmark]: Toolchain (without parser) took 1656.78 ms. Allocated memory is still 119.5 MB. Free memory was 88.6 MB in the beginning and 61.6 MB in the end (delta: 27.0 MB). Peak memory consumption was 26.2 MB. Max. memory is 16.1 GB. [2021-10-29 05:42:19,757 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 119.5 MB. Free memory is still 71.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 05:42:19,757 INFO L168 Benchmark]: CACSL2BoogieTranslator took 314.08 ms. Allocated memory is still 119.5 MB. Free memory was 88.3 MB in the beginning and 93.0 MB in the end (delta: -4.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-29 05:42:19,758 INFO L168 Benchmark]: Boogie Procedure Inliner took 44.79 ms. Allocated memory is still 119.5 MB. Free memory was 93.0 MB in the beginning and 91.5 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 05:42:19,759 INFO L168 Benchmark]: Boogie Preprocessor took 33.05 ms. Allocated memory is still 119.5 MB. Free memory was 91.5 MB in the beginning and 90.3 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-29 05:42:19,760 INFO L168 Benchmark]: RCFGBuilder took 462.11 ms. Allocated memory is still 119.5 MB. Free memory was 90.0 MB in the beginning and 77.6 MB in the end (delta: 12.4 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-29 05:42:19,761 INFO L168 Benchmark]: TraceAbstraction took 784.89 ms. Allocated memory is still 119.5 MB. Free memory was 77.0 MB in the beginning and 62.0 MB in the end (delta: 15.0 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-10-29 05:42:19,762 INFO L168 Benchmark]: Witness Printer took 5.47 ms. Allocated memory is still 119.5 MB. Free memory was 61.9 MB in the beginning and 61.6 MB in the end (delta: 302.5 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-29 05:42:19,766 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 119.5 MB. Free memory is still 71.9 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 314.08 ms. Allocated memory is still 119.5 MB. Free memory was 88.3 MB in the beginning and 93.0 MB in the end (delta: -4.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 44.79 ms. Allocated memory is still 119.5 MB. Free memory was 93.0 MB in the beginning and 91.5 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 33.05 ms. Allocated memory is still 119.5 MB. Free memory was 91.5 MB in the beginning and 90.3 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 462.11 ms. Allocated memory is still 119.5 MB. Free memory was 90.0 MB in the beginning and 77.6 MB in the end (delta: 12.4 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 784.89 ms. Allocated memory is still 119.5 MB. Free memory was 77.0 MB in the beginning and 62.0 MB in the end (delta: 15.0 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Witness Printer took 5.47 ms. Allocated memory is still 119.5 MB. Free memory was 61.9 MB in the beginning and 61.6 MB in the end (delta: 302.5 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * 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 call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of to_int at line 34, overapproximation of someBinaryDOUBLEComparisonOperation at line 28. Possible FailurePath: [L25] int r; [L26] double a, x, s; [L27] a = __VERIFIER_nondet_double() [L14] COND FALSE !(!cond) [L29] x = a [L30] s = 3.25 [L31] r = 1 [L33] COND TRUE 1 [L17] COND TRUE !(cond) [L19] reach_error() - UnprovableResult [Line: 19]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 19]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 19]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 19]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 19]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 28 locations, 6 error locations. Started 1 CEGAR loops. OverallTime: 0.6s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=28occurred 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, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 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 [2021-10-29 05:42:19,816 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6016e2ab-c8ef-4d39-b4c9-367410d910b6/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-b2eff8b [2021-10-29 05:42:22,505 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-29 05:42:22,509 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-29 05:42:22,576 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-29 05:42:22,577 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-29 05:42:22,582 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-29 05:42:22,584 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-29 05:42:22,589 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-29 05:42:22,593 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-29 05:42:22,602 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-29 05:42:22,604 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-29 05:42:22,606 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-29 05:42:22,607 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-29 05:42:22,610 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-29 05:42:22,612 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-29 05:42:22,617 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-29 05:42:22,620 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-29 05:42:22,621 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-29 05:42:22,623 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-29 05:42:22,632 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-29 05:42:22,635 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-29 05:42:22,636 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-29 05:42:22,639 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-29 05:42:22,642 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-29 05:42:22,652 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-29 05:42:22,653 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-29 05:42:22,653 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-29 05:42:22,655 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-29 05:42:22,656 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-29 05:42:22,657 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-29 05:42:22,658 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-29 05:42:22,659 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-29 05:42:22,661 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-29 05:42:22,662 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-29 05:42:22,663 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-29 05:42:22,664 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-29 05:42:22,665 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-29 05:42:22,665 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-29 05:42:22,665 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-29 05:42:22,667 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-29 05:42:22,668 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-29 05:42:22,674 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6016e2ab-c8ef-4d39-b4c9-367410d910b6/bin/utaipan-SDwSMHVbGG/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-10-29 05:42:22,723 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-29 05:42:22,723 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-29 05:42:22,725 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-29 05:42:22,725 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-29 05:42:22,726 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-29 05:42:22,726 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-29 05:42:22,726 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-29 05:42:22,726 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-29 05:42:22,727 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-29 05:42:22,728 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-29 05:42:22,730 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-29 05:42:22,730 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-29 05:42:22,730 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-29 05:42:22,731 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-29 05:42:22,731 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-29 05:42:22,731 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-29 05:42:22,731 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-29 05:42:22,732 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-29 05:42:22,732 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-29 05:42:22,732 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-29 05:42:22,733 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-29 05:42:22,733 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-29 05:42:22,733 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-29 05:42:22,733 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-29 05:42:22,734 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-29 05:42:22,734 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-29 05:42:22,734 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 05:42:22,735 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-29 05:42:22,735 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-29 05:42:22,735 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-29 05:42:22,735 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-29 05:42:22,736 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-29 05:42:22,736 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-29 05:42:22,736 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-29 05:42:22,737 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-29 05:42:22,737 INFO L138 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_6016e2ab-c8ef-4d39-b4c9-367410d910b6/bin/utaipan-SDwSMHVbGG/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6016e2ab-c8ef-4d39-b4c9-367410d910b6/bin/utaipan-SDwSMHVbGG Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d2d6f9be66d27a1c9d3b3eaba0ccd86a9e6d263d5b40883199c2e280efc7ebbe [2021-10-29 05:42:23,237 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-29 05:42:23,267 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-29 05:42:23,271 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-29 05:42:23,272 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-29 05:42:23,274 INFO L275 PluginConnector]: CDTParser initialized [2021-10-29 05:42:23,275 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6016e2ab-c8ef-4d39-b4c9-367410d910b6/bin/utaipan-SDwSMHVbGG/../../sv-benchmarks/c/nla-digbench-scaling/freire2_valuebound2.c [2021-10-29 05:42:23,380 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6016e2ab-c8ef-4d39-b4c9-367410d910b6/bin/utaipan-SDwSMHVbGG/data/8216f6dcd/586a54afce50473ead0f7dce3702c0cf/FLAG96a1a5a58 [2021-10-29 05:42:24,099 INFO L306 CDTParser]: Found 1 translation units. [2021-10-29 05:42:24,104 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6016e2ab-c8ef-4d39-b4c9-367410d910b6/sv-benchmarks/c/nla-digbench-scaling/freire2_valuebound2.c [2021-10-29 05:42:24,114 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6016e2ab-c8ef-4d39-b4c9-367410d910b6/bin/utaipan-SDwSMHVbGG/data/8216f6dcd/586a54afce50473ead0f7dce3702c0cf/FLAG96a1a5a58 [2021-10-29 05:42:24,431 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6016e2ab-c8ef-4d39-b4c9-367410d910b6/bin/utaipan-SDwSMHVbGG/data/8216f6dcd/586a54afce50473ead0f7dce3702c0cf [2021-10-29 05:42:24,435 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-29 05:42:24,437 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-29 05:42:24,439 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-29 05:42:24,439 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-29 05:42:24,444 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-29 05:42:24,445 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:42:24" (1/1) ... [2021-10-29 05:42:24,446 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@70b43e4a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:42:24, skipping insertion in model container [2021-10-29 05:42:24,446 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:42:24" (1/1) ... [2021-10-29 05:42:24,455 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-29 05:42:24,487 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-29 05:42:24,640 WARN L228 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_6016e2ab-c8ef-4d39-b4c9-367410d910b6/sv-benchmarks/c/nla-digbench-scaling/freire2_valuebound2.c[709,722] [2021-10-29 05:42:24,670 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 05:42:24,685 INFO L203 MainTranslator]: Completed pre-run [2021-10-29 05:42:24,730 WARN L228 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_6016e2ab-c8ef-4d39-b4c9-367410d910b6/sv-benchmarks/c/nla-digbench-scaling/freire2_valuebound2.c[709,722] [2021-10-29 05:42:24,768 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 05:42:24,789 INFO L208 MainTranslator]: Completed translation [2021-10-29 05:42:24,790 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:42:24 WrapperNode [2021-10-29 05:42:24,790 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-29 05:42:24,791 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-29 05:42:24,791 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-29 05:42:24,791 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-29 05:42:24,800 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:42:24" (1/1) ... [2021-10-29 05:42:24,812 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:42:24" (1/1) ... [2021-10-29 05:42:24,838 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-29 05:42:24,839 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-29 05:42:24,839 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-29 05:42:24,840 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-29 05:42:24,850 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:42:24" (1/1) ... [2021-10-29 05:42:24,850 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:42:24" (1/1) ... [2021-10-29 05:42:24,854 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:42:24" (1/1) ... [2021-10-29 05:42:24,855 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:42:24" (1/1) ... [2021-10-29 05:42:24,865 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:42:24" (1/1) ... [2021-10-29 05:42:24,869 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:42:24" (1/1) ... [2021-10-29 05:42:24,872 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:42:24" (1/1) ... [2021-10-29 05:42:24,876 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-29 05:42:24,877 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-29 05:42:24,877 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-29 05:42:24,877 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-29 05:42:24,878 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:42:24" (1/1) ... [2021-10-29 05:42:24,886 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 05:42:24,900 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6016e2ab-c8ef-4d39-b4c9-367410d910b6/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 05:42:24,921 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6016e2ab-c8ef-4d39-b4c9-367410d910b6/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-29 05:42:24,933 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6016e2ab-c8ef-4d39-b4c9-367410d910b6/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-29 05:42:24,969 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-29 05:42:24,969 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-29 05:42:24,970 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-29 05:42:24,970 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-29 05:42:35,919 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-29 05:42:35,920 INFO L299 CfgBuilder]: Removed 19 assume(true) statements. [2021-10-29 05:42:35,922 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:42:35 BoogieIcfgContainer [2021-10-29 05:42:35,922 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-29 05:42:35,925 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-29 05:42:35,925 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-29 05:42:35,928 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-29 05:42:35,929 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 05:42:24" (1/3) ... [2021-10-29 05:42:35,930 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12706b0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:42:35, skipping insertion in model container [2021-10-29 05:42:35,930 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:42:24" (2/3) ... [2021-10-29 05:42:35,931 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12706b0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:42:35, skipping insertion in model container [2021-10-29 05:42:35,931 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:42:35" (3/3) ... [2021-10-29 05:42:35,932 INFO L111 eAbstractionObserver]: Analyzing ICFG freire2_valuebound2.c [2021-10-29 05:42:35,937 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-29 05:42:35,937 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-10-29 05:42:35,983 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-29 05:42:35,991 INFO L339 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=LoopsAndPotentialCycles, 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, mLoopAccelerationTechnique=FAST_UPR [2021-10-29 05:42:35,991 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-10-29 05:42:36,009 INFO L276 IsEmpty]: Start isEmpty. Operand has 33 states, 26 states have (on average 1.6153846153846154) internal successors, (42), 32 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:42:36,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-29 05:42:36,015 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:42:36,015 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:42:36,016 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-29 05:42:36,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:42:36,023 INFO L85 PathProgramCache]: Analyzing trace with hash 1804972333, now seen corresponding path program 1 times [2021-10-29 05:42:36,037 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 05:42:36,038 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1310767322] [2021-10-29 05:42:36,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:42:36,039 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 05:42:36,040 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6016e2ab-c8ef-4d39-b4c9-367410d910b6/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 05:42:36,053 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6016e2ab-c8ef-4d39-b4c9-367410d910b6/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 05:42:36,060 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6016e2ab-c8ef-4d39-b4c9-367410d910b6/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-29 05:42:36,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:42:36,323 INFO L263 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-29 05:42:36,329 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:42:36,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:42:36,415 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:42:36,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:42:36,480 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 05:42:36,480 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1310767322] [2021-10-29 05:42:36,481 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1310767322] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 05:42:36,481 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:42:36,482 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-29 05:42:36,484 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928244968] [2021-10-29 05:42:36,490 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-29 05:42:36,491 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 05:42:36,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-29 05:42:36,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-29 05:42:36,516 INFO L87 Difference]: Start difference. First operand has 33 states, 26 states have (on average 1.6153846153846154) internal successors, (42), 32 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:42:36,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:42:36,541 INFO L93 Difference]: Finished difference Result 63 states and 80 transitions. [2021-10-29 05:42:36,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-29 05:42:36,543 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-10-29 05:42:36,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:42:36,553 INFO L225 Difference]: With dead ends: 63 [2021-10-29 05:42:36,554 INFO L226 Difference]: Without dead ends: 29 [2021-10-29 05:42:36,557 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-29 05:42:36,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-10-29 05:42:36,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2021-10-29 05:42:36,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 23 states have (on average 1.2608695652173914) internal successors, (29), 28 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:42:36,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 29 transitions. [2021-10-29 05:42:36,604 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 29 transitions. Word has length 7 [2021-10-29 05:42:36,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:42:36,605 INFO L470 AbstractCegarLoop]: Abstraction has 29 states and 29 transitions. [2021-10-29 05:42:36,606 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:42:36,606 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 29 transitions. [2021-10-29 05:42:36,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-29 05:42:36,607 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:42:36,607 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:42:36,631 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6016e2ab-c8ef-4d39-b4c9-367410d910b6/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-29 05:42:36,826 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6016e2ab-c8ef-4d39-b4c9-367410d910b6/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 05:42:36,827 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-29 05:42:36,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:42:36,828 INFO L85 PathProgramCache]: Analyzing trace with hash 1806819375, now seen corresponding path program 1 times [2021-10-29 05:42:36,829 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 05:42:36,829 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2110705419] [2021-10-29 05:42:36,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:42:36,830 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 05:42:36,830 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6016e2ab-c8ef-4d39-b4c9-367410d910b6/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 05:42:36,831 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6016e2ab-c8ef-4d39-b4c9-367410d910b6/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 05:42:36,865 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6016e2ab-c8ef-4d39-b4c9-367410d910b6/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-29 05:42:37,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:42:37,047 INFO L263 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-29 05:42:37,048 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:42:37,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:42:37,389 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:42:43,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:42:43,144 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 05:42:43,144 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2110705419] [2021-10-29 05:42:43,145 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2110705419] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 05:42:43,145 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:42:43,145 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-10-29 05:42:43,146 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791397922] [2021-10-29 05:42:43,147 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-29 05:42:43,147 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 05:42:43,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-29 05:42:43,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-10-29 05:42:43,150 INFO L87 Difference]: Start difference. First operand 29 states and 29 transitions. Second operand has 7 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 7 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:43:18,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:43:18,770 INFO L93 Difference]: Finished difference Result 34 states and 34 transitions. [2021-10-29 05:43:18,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-29 05:43:18,771 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 7 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-10-29 05:43:18,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:43:18,772 INFO L225 Difference]: With dead ends: 34 [2021-10-29 05:43:18,772 INFO L226 Difference]: Without dead ends: 32 [2021-10-29 05:43:18,773 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-10-29 05:43:18,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2021-10-29 05:43:18,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 31. [2021-10-29 05:43:18,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 25 states have (on average 1.24) internal successors, (31), 30 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:43:18,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 31 transitions. [2021-10-29 05:43:18,782 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 31 transitions. Word has length 7 [2021-10-29 05:43:18,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:43:18,782 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 31 transitions. [2021-10-29 05:43:18,783 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 7 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:43:18,783 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 31 transitions. [2021-10-29 05:43:18,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-29 05:43:18,784 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:43:18,784 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:43:18,809 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6016e2ab-c8ef-4d39-b4c9-367410d910b6/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-29 05:43:18,984 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6016e2ab-c8ef-4d39-b4c9-367410d910b6/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 05:43:18,985 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-29 05:43:18,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:43:18,986 INFO L85 PathProgramCache]: Analyzing trace with hash 1186787538, now seen corresponding path program 1 times [2021-10-29 05:43:18,987 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 05:43:18,987 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1708763822] [2021-10-29 05:43:18,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:43:18,988 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 05:43:18,988 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6016e2ab-c8ef-4d39-b4c9-367410d910b6/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 05:43:18,990 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6016e2ab-c8ef-4d39-b4c9-367410d910b6/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 05:43:18,993 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6016e2ab-c8ef-4d39-b4c9-367410d910b6/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-29 05:43:19,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:43:19,847 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-29 05:43:19,849 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:43:22,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:43:22,712 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:43:28,944 WARN L838 $PredicateComparison]: unable to prove that (= (_ bv1 32) (bvadd (bvmul (_ bv4 32) (bvmul c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0)) (bvneg (bvmul (bvmul c_ULTIMATE.start_main_~r~0 (_ bv6 32)) c_ULTIMATE.start_main_~r~0)) ((_ fp.to_sbv 32) roundTowardZero (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv4 32)))) (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode .cse0 c_ULTIMATE.start_main_~x~0) (fp.mul c_currentRoundingMode .cse0 c_ULTIMATE.start_main_~a~0)))) (bvmul (_ bv3 32) c_ULTIMATE.start_main_~r~0))) is different from false [2021-10-29 05:43:30,983 WARN L860 $PredicateComparison]: unable to prove that (= (_ bv1 32) (bvadd (bvmul (_ bv4 32) (bvmul c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0)) (bvneg (bvmul (bvmul c_ULTIMATE.start_main_~r~0 (_ bv6 32)) c_ULTIMATE.start_main_~r~0)) ((_ fp.to_sbv 32) roundTowardZero (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv4 32)))) (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode .cse0 c_ULTIMATE.start_main_~x~0) (fp.mul c_currentRoundingMode .cse0 c_ULTIMATE.start_main_~a~0)))) (bvmul (_ bv3 32) c_ULTIMATE.start_main_~r~0))) is different from true [2021-10-29 05:44:03,498 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:44:03,499 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 05:44:03,499 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1708763822] [2021-10-29 05:44:03,499 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1708763822] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 05:44:03,500 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:44:03,500 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 11 [2021-10-29 05:44:03,500 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177279066] [2021-10-29 05:44:03,501 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-29 05:44:03,501 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 05:44:03,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-29 05:44:03,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=62, Unknown=2, NotChecked=16, Total=110 [2021-10-29 05:44:03,504 INFO L87 Difference]: Start difference. First operand 31 states and 31 transitions. Second operand has 11 states, 11 states have (on average 1.5454545454545454) internal successors, (17), 11 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:44:08,919 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse1 (fp.geq c_ULTIMATE.start_main_~a~0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)))) (.cse0 (fp.leq c_ULTIMATE.start_main_~a~0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32))))) (and (= c_ULTIMATE.start_main_~r~0 (_ bv1 32)) (or (and (= c_ULTIMATE.start_assume_abort_if_not_~cond (_ bv0 32)) (or (not .cse0) (not .cse1))) (and .cse1 (= c_ULTIMATE.start_assume_abort_if_not_~cond (_ bv1 32)) .cse0)) .cse1 (= c_ULTIMATE.start_main_~a~0 c_ULTIMATE.start_main_~x~0) .cse0 (= (_ bv1 32) (bvadd (bvmul (_ bv4 32) (bvmul c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0)) (bvneg (bvmul (bvmul c_ULTIMATE.start_main_~r~0 (_ bv6 32)) c_ULTIMATE.start_main_~r~0)) ((_ fp.to_sbv 32) roundTowardZero (let ((.cse2 ((_ to_fp 11 53) c_currentRoundingMode (_ bv4 32)))) (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode .cse2 c_ULTIMATE.start_main_~x~0) (fp.mul c_currentRoundingMode .cse2 c_ULTIMATE.start_main_~a~0)))) (bvmul (_ bv3 32) c_ULTIMATE.start_main_~r~0))) (= c_currentRoundingMode roundNearestTiesToEven))) is different from true [2021-10-29 05:44:11,244 WARN L860 $PredicateComparison]: unable to prove that (and (= c_ULTIMATE.start_main_~r~0 (_ bv1 32)) (fp.geq c_ULTIMATE.start_main_~a~0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))) (= c_ULTIMATE.start_main_~a~0 c_ULTIMATE.start_main_~x~0) (fp.leq c_ULTIMATE.start_main_~a~0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32))) (= (_ bv1 32) (bvadd (bvmul (_ bv4 32) (bvmul c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0)) (bvneg (bvmul (bvmul c_ULTIMATE.start_main_~r~0 (_ bv6 32)) c_ULTIMATE.start_main_~r~0)) ((_ fp.to_sbv 32) roundTowardZero (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv4 32)))) (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode .cse0 c_ULTIMATE.start_main_~x~0) (fp.mul c_currentRoundingMode .cse0 c_ULTIMATE.start_main_~a~0)))) (bvmul (_ bv3 32) c_ULTIMATE.start_main_~r~0))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from true [2021-10-29 05:44:56,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:44:56,267 INFO L93 Difference]: Finished difference Result 36 states and 36 transitions. [2021-10-29 05:44:56,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-29 05:44:56,267 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 1.5454545454545454) internal successors, (17), 11 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-10-29 05:44:56,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:44:56,268 INFO L225 Difference]: With dead ends: 36 [2021-10-29 05:44:56,268 INFO L226 Difference]: Without dead ends: 34 [2021-10-29 05:44:56,269 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 30.2s TimeCoverageRelationStatistics Valid=41, Invalid=77, Unknown=4, NotChecked=60, Total=182 [2021-10-29 05:44:56,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2021-10-29 05:44:56,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 33. [2021-10-29 05:44:56,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 27 states have (on average 1.2222222222222223) internal successors, (33), 32 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:44:56,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 33 transitions. [2021-10-29 05:44:56,276 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 33 transitions. Word has length 9 [2021-10-29 05:44:56,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:44:56,277 INFO L470 AbstractCegarLoop]: Abstraction has 33 states and 33 transitions. [2021-10-29 05:44:56,277 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 1.5454545454545454) internal successors, (17), 11 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:44:56,277 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 33 transitions. [2021-10-29 05:44:56,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-29 05:44:56,277 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:44:56,278 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:44:56,306 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6016e2ab-c8ef-4d39-b4c9-367410d910b6/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-29 05:44:56,478 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6016e2ab-c8ef-4d39-b4c9-367410d910b6/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 05:44:56,479 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-29 05:44:56,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:44:56,479 INFO L85 PathProgramCache]: Analyzing trace with hash -1958320619, now seen corresponding path program 1 times [2021-10-29 05:44:56,480 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 05:44:56,481 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1016192637] [2021-10-29 05:44:56,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:44:56,481 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 05:44:56,481 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6016e2ab-c8ef-4d39-b4c9-367410d910b6/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 05:44:56,486 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6016e2ab-c8ef-4d39-b4c9-367410d910b6/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 05:44:56,488 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6016e2ab-c8ef-4d39-b4c9-367410d910b6/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-29 05:45:41,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 05:45:41,529 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-29 05:45:50,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 05:45:51,107 INFO L133 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2021-10-29 05:45:51,108 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-10-29 05:45:51,109 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-10-29 05:45:51,111 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-29 05:45:51,112 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-29 05:45:51,112 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION [2021-10-29 05:45:51,112 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION [2021-10-29 05:45:51,113 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION [2021-10-29 05:45:51,179 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6016e2ab-c8ef-4d39-b4c9-367410d910b6/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-29 05:45:51,313 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6016e2ab-c8ef-4d39-b4c9-367410d910b6/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 05:45:51,316 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2021-10-29 05:45:51,319 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-29 05:45:51,344 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.10 05:45:51 BoogieIcfgContainer [2021-10-29 05:45:51,344 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-29 05:45:51,345 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-29 05:45:51,345 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-29 05:45:51,345 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-29 05:45:51,345 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:42:35" (3/4) ... [2021-10-29 05:45:51,348 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-29 05:45:51,390 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6016e2ab-c8ef-4d39-b4c9-367410d910b6/bin/utaipan-SDwSMHVbGG/witness.graphml [2021-10-29 05:45:51,390 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-29 05:45:51,392 INFO L168 Benchmark]: Toolchain (without parser) took 206954.07 ms. Allocated memory was 77.6 MB in the beginning and 109.1 MB in the end (delta: 31.5 MB). Free memory was 43.3 MB in the beginning and 65.6 MB in the end (delta: -22.3 MB). Peak memory consumption was 11.6 MB. Max. memory is 16.1 GB. [2021-10-29 05:45:51,393 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 77.6 MB. Free memory was 59.7 MB in the beginning and 59.6 MB in the end (delta: 67.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 05:45:51,394 INFO L168 Benchmark]: CACSL2BoogieTranslator took 351.49 ms. Allocated memory is still 77.6 MB. Free memory was 43.2 MB in the beginning and 60.7 MB in the end (delta: -17.5 MB). Peak memory consumption was 6.9 MB. Max. memory is 16.1 GB. [2021-10-29 05:45:51,395 INFO L168 Benchmark]: Boogie Procedure Inliner took 47.38 ms. Allocated memory is still 77.6 MB. Free memory was 60.7 MB in the beginning and 58.9 MB in the end (delta: 1.7 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 05:45:51,396 INFO L168 Benchmark]: Boogie Preprocessor took 36.70 ms. Allocated memory is still 77.6 MB. Free memory was 58.9 MB in the beginning and 57.5 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-29 05:45:51,396 INFO L168 Benchmark]: RCFGBuilder took 11045.89 ms. Allocated memory is still 77.6 MB. Free memory was 57.5 MB in the beginning and 45.8 MB in the end (delta: 11.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-29 05:45:51,398 INFO L168 Benchmark]: TraceAbstraction took 195419.86 ms. Allocated memory was 77.6 MB in the beginning and 109.1 MB in the end (delta: 31.5 MB). Free memory was 45.3 MB in the beginning and 67.6 MB in the end (delta: -22.4 MB). Peak memory consumption was 11.0 MB. Max. memory is 16.1 GB. [2021-10-29 05:45:51,398 INFO L168 Benchmark]: Witness Printer took 45.57 ms. Allocated memory is still 109.1 MB. Free memory was 67.6 MB in the beginning and 65.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-29 05:45:51,403 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 77.6 MB. Free memory was 59.7 MB in the beginning and 59.6 MB in the end (delta: 67.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 351.49 ms. Allocated memory is still 77.6 MB. Free memory was 43.2 MB in the beginning and 60.7 MB in the end (delta: -17.5 MB). Peak memory consumption was 6.9 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 47.38 ms. Allocated memory is still 77.6 MB. Free memory was 60.7 MB in the beginning and 58.9 MB in the end (delta: 1.7 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 36.70 ms. Allocated memory is still 77.6 MB. Free memory was 58.9 MB in the beginning and 57.5 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 11045.89 ms. Allocated memory is still 77.6 MB. Free memory was 57.5 MB in the beginning and 45.8 MB in the end (delta: 11.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 195419.86 ms. Allocated memory was 77.6 MB in the beginning and 109.1 MB in the end (delta: 31.5 MB). Free memory was 45.3 MB in the beginning and 67.6 MB in the end (delta: -22.4 MB). Peak memory consumption was 11.0 MB. Max. memory is 16.1 GB. * Witness Printer took 45.57 ms. Allocated memory is still 109.1 MB. Free memory was 67.6 MB in the beginning and 65.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * 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 - CounterExampleResult [Line: 19]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L25] int r; [L26] double a, x, s; [L27] a = __VERIFIER_nondet_double() [L14] COND FALSE !(!cond) [L29] x = a [L30] s = 3.25 [L31] r = 1 [L33] COND TRUE 1 [L17] COND FALSE !(!(cond)) [L17] COND FALSE !(!(cond)) [L17] COND TRUE !(cond) [L19] reach_error() - UnprovableResult [Line: 19]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 19]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 19]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 19]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 19]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 33 locations, 6 error locations. Started 1 CEGAR loops. OverallTime: 195.3s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 88.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 83 SDtfs, 19 SDslu, 110 SDs, 0 SdLazy, 73 SolverSat, 10 SolverUnsat, 32 SolverUnknown, 0 SolverNotchecked, 80.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 44 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 35.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=33occurred in iteration=0, InterpolantAutomatonStates: 17, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 2 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 46.1s SatisfiabilityAnalysisTime, 49.9s InterpolantComputationTime, 34 NumberOfCodeBlocks, 34 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 40 ConstructedInterpolants, 0 QuantifiedInterpolants, 327 SizeOfPredicates, 11 NumberOfNonLiveVariables, 102 ConjunctsInSsa, 16 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 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 proved your program to be incorrect! [2021-10-29 05:45:51,642 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6016e2ab-c8ef-4d39-b4c9-367410d910b6/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...