./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_codestructure_normal_file-68.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d508abf2-52d9-45a9-ba02-d54add6f79c3/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d508abf2-52d9-45a9-ba02-d54add6f79c3/bin/utaipan-verify-t7M7D8N6sZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d508abf2-52d9-45a9-ba02-d54add6f79c3/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d508abf2-52d9-45a9-ba02-d54add6f79c3/bin/utaipan-verify-t7M7D8N6sZ/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_codestructure_normal_file-68.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d508abf2-52d9-45a9-ba02-d54add6f79c3/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d508abf2-52d9-45a9-ba02-d54add6f79c3/bin/utaipan-verify-t7M7D8N6sZ --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash bdb04820b0552f240cac64f9b4eeb39d6636c8d16d50737ca938c89bab3fc009 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 05:06:46,311 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 05:06:46,426 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d508abf2-52d9-45a9-ba02-d54add6f79c3/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-11-19 05:06:46,433 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 05:06:46,434 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 05:06:46,476 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 05:06:46,477 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 05:06:46,478 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 05:06:46,479 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 05:06:46,484 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 05:06:46,484 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 05:06:46,485 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 05:06:46,485 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 05:06:46,487 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-19 05:06:46,487 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 05:06:46,488 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 05:06:46,488 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-19 05:06:46,489 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-19 05:06:46,489 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 05:06:46,490 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-19 05:06:46,490 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-19 05:06:46,491 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-19 05:06:46,492 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 05:06:46,492 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 05:06:46,493 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 05:06:46,493 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 05:06:46,493 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 05:06:46,494 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 05:06:46,494 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 05:06:46,494 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 05:06:46,496 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 05:06:46,496 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 05:06:46,496 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 05:06:46,497 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 05:06:46,497 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 05:06:46,497 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 05:06:46,497 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:06:46,498 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 05:06:46,498 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 05:06:46,498 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 05:06:46,498 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-19 05:06:46,499 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 05:06:46,499 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 05:06:46,499 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 05:06:46,500 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 05:06:46,500 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d508abf2-52d9-45a9-ba02-d54add6f79c3/bin/utaipan-verify-t7M7D8N6sZ/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d508abf2-52d9-45a9-ba02-d54add6f79c3/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bdb04820b0552f240cac64f9b4eeb39d6636c8d16d50737ca938c89bab3fc009 [2023-11-19 05:06:46,811 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 05:06:46,843 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 05:06:46,845 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 05:06:46,847 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 05:06:46,847 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 05:06:46,849 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d508abf2-52d9-45a9-ba02-d54add6f79c3/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/hardness-nfm22/hardness_codestructure_normal_file-68.i [2023-11-19 05:06:49,965 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 05:06:50,236 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 05:06:50,237 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d508abf2-52d9-45a9-ba02-d54add6f79c3/sv-benchmarks/c/hardness-nfm22/hardness_codestructure_normal_file-68.i [2023-11-19 05:06:50,248 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d508abf2-52d9-45a9-ba02-d54add6f79c3/bin/utaipan-verify-t7M7D8N6sZ/data/42598633f/7b30028e3b5449f19801dd9380faeefb/FLAG6251be41b [2023-11-19 05:06:50,265 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d508abf2-52d9-45a9-ba02-d54add6f79c3/bin/utaipan-verify-t7M7D8N6sZ/data/42598633f/7b30028e3b5449f19801dd9380faeefb [2023-11-19 05:06:50,271 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 05:06:50,273 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 05:06:50,280 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 05:06:50,280 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 05:06:50,285 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 05:06:50,286 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:06:50" (1/1) ... [2023-11-19 05:06:50,287 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41ae144e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:06:50, skipping insertion in model container [2023-11-19 05:06:50,287 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:06:50" (1/1) ... [2023-11-19 05:06:50,317 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 05:06:50,483 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d508abf2-52d9-45a9-ba02-d54add6f79c3/sv-benchmarks/c/hardness-nfm22/hardness_codestructure_normal_file-68.i[913,926] [2023-11-19 05:06:50,547 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:06:50,568 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 05:06:50,581 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d508abf2-52d9-45a9-ba02-d54add6f79c3/sv-benchmarks/c/hardness-nfm22/hardness_codestructure_normal_file-68.i[913,926] [2023-11-19 05:06:50,620 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:06:50,638 INFO L206 MainTranslator]: Completed translation [2023-11-19 05:06:50,638 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:06:50 WrapperNode [2023-11-19 05:06:50,638 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 05:06:50,650 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 05:06:50,650 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 05:06:50,650 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 05:06:50,656 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:06:50" (1/1) ... [2023-11-19 05:06:50,668 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:06:50" (1/1) ... [2023-11-19 05:06:50,752 INFO L138 Inliner]: procedures = 26, calls = 29, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 143 [2023-11-19 05:06:50,752 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 05:06:50,753 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 05:06:50,753 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 05:06:50,753 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 05:06:50,763 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:06:50" (1/1) ... [2023-11-19 05:06:50,763 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:06:50" (1/1) ... [2023-11-19 05:06:50,779 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:06:50" (1/1) ... [2023-11-19 05:06:50,779 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:06:50" (1/1) ... [2023-11-19 05:06:50,805 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:06:50" (1/1) ... [2023-11-19 05:06:50,809 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:06:50" (1/1) ... [2023-11-19 05:06:50,812 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:06:50" (1/1) ... [2023-11-19 05:06:50,815 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:06:50" (1/1) ... [2023-11-19 05:06:50,819 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 05:06:50,820 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 05:06:50,821 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 05:06:50,821 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 05:06:50,822 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:06:50" (1/1) ... [2023-11-19 05:06:50,828 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:06:50,839 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d508abf2-52d9-45a9-ba02-d54add6f79c3/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:06:50,851 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d508abf2-52d9-45a9-ba02-d54add6f79c3/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 05:06:50,884 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d508abf2-52d9-45a9-ba02-d54add6f79c3/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 05:06:50,893 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 05:06:50,894 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-19 05:06:50,894 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-19 05:06:50,894 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 05:06:50,894 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 05:06:50,895 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 05:06:51,061 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 05:06:51,063 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 05:06:51,525 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 05:06:51,758 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 05:06:51,758 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-19 05:06:51,763 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:06:51 BoogieIcfgContainer [2023-11-19 05:06:51,763 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 05:06:51,767 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 05:06:51,767 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 05:06:51,772 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 05:06:51,772 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 05:06:50" (1/3) ... [2023-11-19 05:06:51,773 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@642da7bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:06:51, skipping insertion in model container [2023-11-19 05:06:51,774 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:06:50" (2/3) ... [2023-11-19 05:06:51,775 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@642da7bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:06:51, skipping insertion in model container [2023-11-19 05:06:51,776 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:06:51" (3/3) ... [2023-11-19 05:06:51,777 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_codestructure_normal_file-68.i [2023-11-19 05:06:51,793 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 05:06:51,793 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-19 05:06:51,884 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 05:06:51,893 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@54b90ccb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-19 05:06:51,894 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-19 05:06:51,913 INFO L276 IsEmpty]: Start isEmpty. Operand has 33 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 15 states have internal predecessors, (17), 16 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2023-11-19 05:06:51,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-11-19 05:06:51,925 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:06:51,926 INFO L195 NwaCegarLoop]: trace histogram [16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:06:51,927 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:06:51,934 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:06:51,934 INFO L85 PathProgramCache]: Analyzing trace with hash 2121005096, now seen corresponding path program 1 times [2023-11-19 05:06:51,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:06:51,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429015239] [2023-11-19 05:06:51,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:06:51,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:06:52,144 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 05:06:52,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [333681639] [2023-11-19 05:06:52,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:06:52,147 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:06:52,148 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d508abf2-52d9-45a9-ba02-d54add6f79c3/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:06:52,154 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d508abf2-52d9-45a9-ba02-d54add6f79c3/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:06:52,187 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d508abf2-52d9-45a9-ba02-d54add6f79c3/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 05:06:52,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 05:06:52,353 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 05:06:52,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 05:06:52,558 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-11-19 05:06:52,561 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-19 05:06:52,562 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-19 05:06:52,572 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d508abf2-52d9-45a9-ba02-d54add6f79c3/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-19 05:06:52,771 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d508abf2-52d9-45a9-ba02-d54add6f79c3/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-19 05:06:52,774 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-11-19 05:06:52,778 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-19 05:06:52,842 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 05:06:52 BoogieIcfgContainer [2023-11-19 05:06:52,842 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-19 05:06:52,843 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-19 05:06:52,843 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-19 05:06:52,843 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-19 05:06:52,844 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:06:51" (3/4) ... [2023-11-19 05:06:52,846 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-19 05:06:52,847 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-19 05:06:52,848 INFO L158 Benchmark]: Toolchain (without parser) took 2574.63ms. Allocated memory is still 144.7MB. Free memory was 109.2MB in the beginning and 85.3MB in the end (delta: 23.9MB). Peak memory consumption was 22.6MB. Max. memory is 16.1GB. [2023-11-19 05:06:52,849 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 111.1MB. Free memory is still 84.8MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 05:06:52,849 INFO L158 Benchmark]: CACSL2BoogieTranslator took 369.35ms. Allocated memory is still 144.7MB. Free memory was 108.8MB in the beginning and 95.4MB in the end (delta: 13.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-19 05:06:52,850 INFO L158 Benchmark]: Boogie Procedure Inliner took 102.31ms. Allocated memory is still 144.7MB. Free memory was 95.4MB in the beginning and 91.6MB in the end (delta: 3.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-19 05:06:52,851 INFO L158 Benchmark]: Boogie Preprocessor took 66.81ms. Allocated memory is still 144.7MB. Free memory was 91.6MB in the beginning and 89.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 05:06:52,851 INFO L158 Benchmark]: RCFGBuilder took 943.07ms. Allocated memory is still 144.7MB. Free memory was 89.5MB in the beginning and 68.3MB in the end (delta: 21.3MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2023-11-19 05:06:52,852 INFO L158 Benchmark]: TraceAbstraction took 1075.26ms. Allocated memory is still 144.7MB. Free memory was 67.7MB in the beginning and 85.3MB in the end (delta: -17.6MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 05:06:52,852 INFO L158 Benchmark]: Witness Printer took 4.25ms. Allocated memory is still 144.7MB. Free memory is still 85.3MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 05:06:52,856 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 111.1MB. Free memory is still 84.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 369.35ms. Allocated memory is still 144.7MB. Free memory was 108.8MB in the beginning and 95.4MB in the end (delta: 13.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 102.31ms. Allocated memory is still 144.7MB. Free memory was 95.4MB in the beginning and 91.6MB in the end (delta: 3.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 66.81ms. Allocated memory is still 144.7MB. Free memory was 91.6MB in the beginning and 89.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 943.07ms. Allocated memory is still 144.7MB. Free memory was 89.5MB in the beginning and 68.3MB in the end (delta: 21.3MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * TraceAbstraction took 1075.26ms. Allocated memory is still 144.7MB. Free memory was 67.7MB in the beginning and 85.3MB in the end (delta: -17.6MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 4.25ms. Allocated memory is still 144.7MB. Free memory is still 85.3MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 19]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 60, overapproximation of someBinaryFLOATComparisonOperation at line 111, overapproximation of bitwiseOr at line 41. Possible FailurePath: [L21] unsigned char isInitial = 0; [L22] unsigned char var_1_1 = 1; [L23] unsigned char var_1_2 = 10; [L24] unsigned char var_1_3 = 25; [L25] unsigned char var_1_4 = 16; [L26] unsigned char var_1_5 = 0; [L27] unsigned char var_1_6 = 0; [L28] unsigned char var_1_7 = 1; [L29] unsigned char var_1_8 = 32; [L30] double var_1_9 = 4.6; [L31] double var_1_10 = 9.25; [L32] double var_1_11 = 1.25; [L33] unsigned char var_1_12 = 100; [L34] unsigned char var_1_13 = 64; [L35] unsigned char var_1_14 = 0; [L36] float var_1_15 = 7.5; [L37] signed long int var_1_16 = 0; [L115] isInitial = 1 [L116] FCALL initially() [L117] COND TRUE 1 [L118] FCALL updateLastVariables() [L119] CALL updateVariables() [L83] var_1_2 = __VERIFIER_nondet_uchar() [L84] CALL assume_abort_if_not(var_1_2 >= 0) VAL [\old(cond)=1, isInitial=1, var_1_10=37/4, var_1_11=5/4, var_1_12=100, var_1_13=64, var_1_14=0, var_1_15=15/2, var_1_16=0, var_1_1=1, var_1_3=25, var_1_4=16, var_1_5=0, var_1_6=0, var_1_7=1, var_1_8=32, var_1_9=23/5] [L20] COND FALSE !(!cond) [L84] RET assume_abort_if_not(var_1_2 >= 0) VAL [isInitial=1, var_1_10=37/4, var_1_11=5/4, var_1_12=100, var_1_13=64, var_1_14=0, var_1_15=15/2, var_1_16=0, var_1_1=1, var_1_3=25, var_1_4=16, var_1_5=0, var_1_6=0, var_1_7=1, var_1_8=32, var_1_9=23/5] [L85] CALL assume_abort_if_not(var_1_2 <= 255) VAL [\old(cond)=1, isInitial=1, var_1_10=37/4, var_1_11=5/4, var_1_12=100, var_1_13=64, var_1_14=0, var_1_15=15/2, var_1_16=0, var_1_1=1, var_1_3=25, var_1_4=16, var_1_5=0, var_1_6=0, var_1_7=1, var_1_8=32, var_1_9=23/5] [L20] COND FALSE !(!cond) [L85] RET assume_abort_if_not(var_1_2 <= 255) VAL [isInitial=1, var_1_10=37/4, var_1_11=5/4, var_1_12=100, var_1_13=64, var_1_14=0, var_1_15=15/2, var_1_16=0, var_1_1=1, var_1_3=25, var_1_4=16, var_1_5=0, var_1_6=0, var_1_7=1, var_1_8=32, var_1_9=23/5] [L86] var_1_3 = __VERIFIER_nondet_uchar() [L87] CALL assume_abort_if_not(var_1_3 >= 0) VAL [\old(cond)=1, isInitial=1, var_1_10=37/4, var_1_11=5/4, var_1_12=100, var_1_13=64, var_1_14=0, var_1_15=15/2, var_1_16=0, var_1_1=1, var_1_3=1, var_1_4=16, var_1_5=0, var_1_6=0, var_1_7=1, var_1_8=32, var_1_9=23/5] [L20] COND FALSE !(!cond) [L87] RET assume_abort_if_not(var_1_3 >= 0) VAL [isInitial=1, var_1_10=37/4, var_1_11=5/4, var_1_12=100, var_1_13=64, var_1_14=0, var_1_15=15/2, var_1_16=0, var_1_1=1, var_1_3=1, var_1_4=16, var_1_5=0, var_1_6=0, var_1_7=1, var_1_8=32, var_1_9=23/5] [L88] CALL assume_abort_if_not(var_1_3 <= 255) VAL [\old(cond)=1, isInitial=1, var_1_10=37/4, var_1_11=5/4, var_1_12=100, var_1_13=64, var_1_14=0, var_1_15=15/2, var_1_16=0, var_1_1=1, var_1_3=1, var_1_4=16, var_1_5=0, var_1_6=0, var_1_7=1, var_1_8=32, var_1_9=23/5] [L20] COND FALSE !(!cond) [L88] RET assume_abort_if_not(var_1_3 <= 255) VAL [isInitial=1, var_1_10=37/4, var_1_11=5/4, var_1_12=100, var_1_13=64, var_1_14=0, var_1_15=15/2, var_1_16=0, var_1_1=1, var_1_3=1, var_1_4=16, var_1_5=0, var_1_6=0, var_1_7=1, var_1_8=32, var_1_9=23/5] [L89] var_1_4 = __VERIFIER_nondet_uchar() [L90] CALL assume_abort_if_not(var_1_4 >= 0) VAL [\old(cond)=1, isInitial=1, var_1_10=37/4, var_1_11=5/4, var_1_12=100, var_1_13=64, var_1_14=0, var_1_15=15/2, var_1_16=0, var_1_1=1, var_1_3=1, var_1_4=3, var_1_5=0, var_1_6=0, var_1_7=1, var_1_8=32, var_1_9=23/5] [L20] COND FALSE !(!cond) [L90] RET assume_abort_if_not(var_1_4 >= 0) VAL [isInitial=1, var_1_10=37/4, var_1_11=5/4, var_1_12=100, var_1_13=64, var_1_14=0, var_1_15=15/2, var_1_16=0, var_1_1=1, var_1_3=1, var_1_4=3, var_1_5=0, var_1_6=0, var_1_7=1, var_1_8=32, var_1_9=23/5] [L91] CALL assume_abort_if_not(var_1_4 <= 255) VAL [\old(cond)=1, isInitial=1, var_1_10=37/4, var_1_11=5/4, var_1_12=100, var_1_13=64, var_1_14=0, var_1_15=15/2, var_1_16=0, var_1_1=1, var_1_3=1, var_1_4=3, var_1_5=0, var_1_6=0, var_1_7=1, var_1_8=32, var_1_9=23/5] [L20] COND FALSE !(!cond) [L91] RET assume_abort_if_not(var_1_4 <= 255) VAL [isInitial=1, var_1_10=37/4, var_1_11=5/4, var_1_12=100, var_1_13=64, var_1_14=0, var_1_15=15/2, var_1_16=0, var_1_1=1, var_1_3=1, var_1_4=3, var_1_5=0, var_1_6=0, var_1_7=1, var_1_8=32, var_1_9=23/5] [L92] var_1_5 = __VERIFIER_nondet_uchar() [L93] CALL assume_abort_if_not(var_1_5 >= 0) VAL [\old(cond)=1, isInitial=1, var_1_10=37/4, var_1_11=5/4, var_1_12=100, var_1_13=64, var_1_14=0, var_1_15=15/2, var_1_16=0, var_1_1=1, var_1_3=1, var_1_4=3, var_1_5=0, var_1_6=0, var_1_7=1, var_1_8=32, var_1_9=23/5] [L20] COND FALSE !(!cond) [L93] RET assume_abort_if_not(var_1_5 >= 0) VAL [isInitial=1, var_1_10=37/4, var_1_11=5/4, var_1_12=100, var_1_13=64, var_1_14=0, var_1_15=15/2, var_1_16=0, var_1_1=1, var_1_3=1, var_1_4=3, var_1_5=0, var_1_6=0, var_1_7=1, var_1_8=32, var_1_9=23/5] [L94] CALL assume_abort_if_not(var_1_5 <= 0) VAL [\old(cond)=1, isInitial=1, var_1_10=37/4, var_1_11=5/4, var_1_12=100, var_1_13=64, var_1_14=0, var_1_15=15/2, var_1_16=0, var_1_1=1, var_1_3=1, var_1_4=3, var_1_5=0, var_1_6=0, var_1_7=1, var_1_8=32, var_1_9=23/5] [L20] COND FALSE !(!cond) [L94] RET assume_abort_if_not(var_1_5 <= 0) VAL [isInitial=1, var_1_10=37/4, var_1_11=5/4, var_1_12=100, var_1_13=64, var_1_14=0, var_1_15=15/2, var_1_16=0, var_1_1=1, var_1_3=1, var_1_4=3, var_1_5=0, var_1_6=0, var_1_7=1, var_1_8=32, var_1_9=23/5] [L95] var_1_7 = __VERIFIER_nondet_uchar() [L96] CALL assume_abort_if_not(var_1_7 >= 1) VAL [\old(cond)=1, isInitial=1, var_1_10=37/4, var_1_11=5/4, var_1_12=100, var_1_13=64, var_1_14=0, var_1_15=15/2, var_1_16=0, var_1_1=1, var_1_3=1, var_1_4=3, var_1_5=0, var_1_6=0, var_1_7=1, var_1_8=32, var_1_9=23/5] [L20] COND FALSE !(!cond) [L96] RET assume_abort_if_not(var_1_7 >= 1) VAL [isInitial=1, var_1_10=37/4, var_1_11=5/4, var_1_12=100, var_1_13=64, var_1_14=0, var_1_15=15/2, var_1_16=0, var_1_1=1, var_1_3=1, var_1_4=3, var_1_5=0, var_1_6=0, var_1_7=1, var_1_8=32, var_1_9=23/5] [L97] CALL assume_abort_if_not(var_1_7 <= 1) VAL [\old(cond)=1, isInitial=1, var_1_10=37/4, var_1_11=5/4, var_1_12=100, var_1_13=64, var_1_14=0, var_1_15=15/2, var_1_16=0, var_1_1=1, var_1_3=1, var_1_4=3, var_1_5=0, var_1_6=0, var_1_7=1, var_1_8=32, var_1_9=23/5] [L20] COND FALSE !(!cond) [L97] RET assume_abort_if_not(var_1_7 <= 1) VAL [isInitial=1, var_1_10=37/4, var_1_11=5/4, var_1_12=100, var_1_13=64, var_1_14=0, var_1_15=15/2, var_1_16=0, var_1_1=1, var_1_3=1, var_1_4=3, var_1_5=0, var_1_6=0, var_1_7=1, var_1_8=32, var_1_9=23/5] [L98] var_1_8 = __VERIFIER_nondet_uchar() [L99] CALL assume_abort_if_not(var_1_8 >= 0) VAL [\old(cond)=1, isInitial=1, var_1_10=37/4, var_1_11=5/4, var_1_12=100, var_1_13=64, var_1_14=0, var_1_15=15/2, var_1_16=0, var_1_1=1, var_1_3=1, var_1_4=3, var_1_5=0, var_1_6=0, var_1_7=1, var_1_8=1, var_1_9=23/5] [L20] COND FALSE !(!cond) [L99] RET assume_abort_if_not(var_1_8 >= 0) VAL [isInitial=1, var_1_10=37/4, var_1_11=5/4, var_1_12=100, var_1_13=64, var_1_14=0, var_1_15=15/2, var_1_16=0, var_1_1=1, var_1_3=1, var_1_4=3, var_1_5=0, var_1_6=0, var_1_7=1, var_1_8=1, var_1_9=23/5] [L100] CALL assume_abort_if_not(var_1_8 <= 255) VAL [\old(cond)=1, isInitial=1, var_1_10=37/4, var_1_11=5/4, var_1_12=100, var_1_13=64, var_1_14=0, var_1_15=15/2, var_1_16=0, var_1_1=1, var_1_3=1, var_1_4=3, var_1_5=0, var_1_6=0, var_1_7=1, var_1_8=1, var_1_9=23/5] [L20] COND FALSE !(!cond) [L100] RET assume_abort_if_not(var_1_8 <= 255) VAL [isInitial=1, var_1_10=37/4, var_1_11=5/4, var_1_12=100, var_1_13=64, var_1_14=0, var_1_15=15/2, var_1_16=0, var_1_1=1, var_1_3=1, var_1_4=3, var_1_5=0, var_1_6=0, var_1_7=1, var_1_8=1, var_1_9=23/5] [L101] CALL assume_abort_if_not(var_1_8 != 0) VAL [\old(cond)=1, isInitial=1, var_1_10=37/4, var_1_11=5/4, var_1_12=100, var_1_13=64, var_1_14=0, var_1_15=15/2, var_1_16=0, var_1_1=1, var_1_3=1, var_1_4=3, var_1_5=0, var_1_6=0, var_1_7=1, var_1_8=1, var_1_9=23/5] [L20] COND FALSE !(!cond) [L101] RET assume_abort_if_not(var_1_8 != 0) VAL [isInitial=1, var_1_10=37/4, var_1_11=5/4, var_1_12=100, var_1_13=64, var_1_14=0, var_1_15=15/2, var_1_16=0, var_1_1=1, var_1_3=1, var_1_4=3, var_1_5=0, var_1_6=0, var_1_7=1, var_1_8=1, var_1_9=23/5] [L102] var_1_10 = __VERIFIER_nondet_double() [L103] CALL assume_abort_if_not((var_1_10 >= -922337.2036854765600e+13F && var_1_10 <= -1.0e-20F) || (var_1_10 <= 9223372.036854765600e+12F && var_1_10 >= 1.0e-20F )) VAL [\old(cond)=1, isInitial=1, var_1_10=2, var_1_11=5/4, var_1_12=100, var_1_13=64, var_1_14=0, var_1_15=15/2, var_1_16=0, var_1_1=1, var_1_3=1, var_1_4=3, var_1_5=0, var_1_6=0, var_1_7=1, var_1_8=1, var_1_9=23/5] [L20] COND FALSE !(!cond) [L103] RET assume_abort_if_not((var_1_10 >= -922337.2036854765600e+13F && var_1_10 <= -1.0e-20F) || (var_1_10 <= 9223372.036854765600e+12F && var_1_10 >= 1.0e-20F )) VAL [isInitial=1, var_1_10=2, var_1_11=5/4, var_1_12=100, var_1_13=64, var_1_14=0, var_1_15=15/2, var_1_16=0, var_1_1=1, var_1_3=1, var_1_4=3, var_1_5=0, var_1_6=0, var_1_7=1, var_1_8=1, var_1_9=23/5] [L104] var_1_13 = __VERIFIER_nondet_uchar() [L105] CALL assume_abort_if_not(var_1_13 >= 0) VAL [\old(cond)=1, isInitial=1, var_1_10=2, var_1_11=5/4, var_1_12=100, var_1_13=50, var_1_14=0, var_1_15=15/2, var_1_16=0, var_1_1=1, var_1_3=1, var_1_4=3, var_1_5=0, var_1_6=0, var_1_7=1, var_1_8=1, var_1_9=23/5] [L20] COND FALSE !(!cond) [L105] RET assume_abort_if_not(var_1_13 >= 0) VAL [isInitial=1, var_1_10=2, var_1_11=5/4, var_1_12=100, var_1_13=50, var_1_14=0, var_1_15=15/2, var_1_16=0, var_1_1=1, var_1_3=1, var_1_4=3, var_1_5=0, var_1_6=0, var_1_7=1, var_1_8=1, var_1_9=23/5] [L106] CALL assume_abort_if_not(var_1_13 <= 254) VAL [\old(cond)=1, isInitial=1, var_1_10=2, var_1_11=5/4, var_1_12=100, var_1_13=50, var_1_14=0, var_1_15=15/2, var_1_16=0, var_1_1=1, var_1_3=1, var_1_4=3, var_1_5=0, var_1_6=0, var_1_7=1, var_1_8=1, var_1_9=23/5] [L20] COND FALSE !(!cond) [L106] RET assume_abort_if_not(var_1_13 <= 254) VAL [isInitial=1, var_1_10=2, var_1_11=5/4, var_1_12=100, var_1_13=50, var_1_14=0, var_1_15=15/2, var_1_16=0, var_1_1=1, var_1_3=1, var_1_4=3, var_1_5=0, var_1_6=0, var_1_7=1, var_1_8=1, var_1_9=23/5] [L119] RET updateVariables() [L120] CALL step() [L41] EXPR var_1_3 ^ var_1_4 [L41] COND FALSE !(var_1_2 <= (var_1_3 ^ var_1_4)) [L44] var_1_1 = (! var_1_5) [L46] COND FALSE !(-256 >= var_1_3) [L49] COND TRUE (var_1_2 < (var_1_4 / var_1_8)) || ((var_1_5 && var_1_7) && var_1_1) [L50] var_1_6 = var_1_7 [L53] COND TRUE ((((((((var_1_2) < (var_1_3)) ? (var_1_2) : (var_1_3)))) > (var_1_4)) ? (((((var_1_2) < (var_1_3)) ? (var_1_2) : (var_1_3)))) : (var_1_4))) <= (50 * var_1_8) [L54] var_1_9 = var_1_10 [L56] COND TRUE (var_1_7 && var_1_1) || (! var_1_5) [L57] var_1_11 = var_1_10 [L59] COND TRUE \read(var_1_1) [L60] COND FALSE !(var_1_10 >= (- var_1_9)) [L67] var_1_12 = var_1_13 [L72] COND FALSE !((var_1_13 % (5u + 256u)) <= var_1_2) [L79] var_1_15 = var_1_10 [L80] var_1_16 = var_1_3 [L120] RET step() [L121] CALL, EXPR property() [L111] EXPR var_1_3 ^ var_1_4 [L111-L112] return ((((((((var_1_2 <= (var_1_3 ^ var_1_4)) ? (var_1_1 == ((unsigned char) (! var_1_5))) : (var_1_1 == ((unsigned char) (! var_1_5)))) && ((-256 >= var_1_3) ? (var_1_6 == ((unsigned char) (var_1_1 || var_1_7))) : (((var_1_2 < (var_1_4 / var_1_8)) || ((var_1_5 && var_1_7) && var_1_1)) ? (var_1_6 == ((unsigned char) var_1_7)) : 1))) && ((((((((((var_1_2) < (var_1_3)) ? (var_1_2) : (var_1_3)))) > (var_1_4)) ? (((((var_1_2) < (var_1_3)) ? (var_1_2) : (var_1_3)))) : (var_1_4))) <= (50 * var_1_8)) ? (var_1_9 == ((double) var_1_10)) : 1)) && (((var_1_7 && var_1_1) || (! var_1_5)) ? (var_1_11 == ((double) var_1_10)) : 1)) && (var_1_1 ? ((var_1_10 >= (- var_1_9)) ? ((var_1_8 != var_1_3) ? (var_1_12 == ((unsigned char) var_1_13)) : (var_1_12 == ((unsigned char) 50))) : (var_1_12 == ((unsigned char) var_1_13))) : (var_1_12 == ((unsigned char) var_1_13)))) && (((var_1_13 % (5u + 256u)) <= var_1_2) ? (((var_1_13 + 16) >= var_1_2) ? (var_1_14 == ((unsigned char) var_1_7)) : (var_1_14 == ((unsigned char) var_1_7))) : 1)) && (var_1_15 == ((float) var_1_10))) && (var_1_16 == ((signed long int) var_1_3)) ; [L121] RET, EXPR property() [L121] CALL __VERIFIER_assert(property()) [L19] COND TRUE !(cond) VAL [\old(cond)=0, cond=0, isInitial=1, var_1_10=2, var_1_11=2, var_1_12=50, var_1_13=50, var_1_14=0, var_1_15=2, var_1_16=1, var_1_1=1, var_1_2=2, var_1_3=1, var_1_4=3, var_1_5=0, var_1_6=1, var_1_7=1, var_1_8=1, var_1_9=2] [L19] reach_error() VAL [\old(cond)=0, cond=0, isInitial=1, var_1_10=2, var_1_11=2, var_1_12=50, var_1_13=50, var_1_14=0, var_1_15=2, var_1_16=1, var_1_1=1, var_1_2=2, var_1_3=1, var_1_4=3, var_1_5=0, var_1_6=1, var_1_7=1, var_1_8=1, var_1_9=2] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 33 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.9s, OverallIterations: 1, TraceHistogramMax: 16, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=33occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 60 NumberOfCodeBlocks, 60 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2023-11-19 05:06:52,894 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d508abf2-52d9-45a9-ba02-d54add6f79c3/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d508abf2-52d9-45a9-ba02-d54add6f79c3/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d508abf2-52d9-45a9-ba02-d54add6f79c3/bin/utaipan-verify-t7M7D8N6sZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d508abf2-52d9-45a9-ba02-d54add6f79c3/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d508abf2-52d9-45a9-ba02-d54add6f79c3/bin/utaipan-verify-t7M7D8N6sZ/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_codestructure_normal_file-68.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d508abf2-52d9-45a9-ba02-d54add6f79c3/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d508abf2-52d9-45a9-ba02-d54add6f79c3/bin/utaipan-verify-t7M7D8N6sZ --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash bdb04820b0552f240cac64f9b4eeb39d6636c8d16d50737ca938c89bab3fc009 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 05:06:55,542 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 05:06:55,682 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d508abf2-52d9-45a9-ba02-d54add6f79c3/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2023-11-19 05:06:55,690 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 05:06:55,691 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 05:06:55,734 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 05:06:55,735 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 05:06:55,736 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 05:06:55,737 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 05:06:55,742 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 05:06:55,743 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 05:06:55,743 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 05:06:55,744 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 05:06:55,745 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 05:06:55,746 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 05:06:55,746 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 05:06:55,748 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 05:06:55,749 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 05:06:55,749 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 05:06:55,750 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 05:06:55,751 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 05:06:55,751 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 05:06:55,752 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 05:06:55,752 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 05:06:55,753 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-19 05:06:55,753 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-19 05:06:55,754 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-19 05:06:55,754 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 05:06:55,755 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 05:06:55,755 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 05:06:55,757 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 05:06:55,757 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 05:06:55,757 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 05:06:55,758 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:06:55,758 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 05:06:55,759 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 05:06:55,759 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 05:06:55,759 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-11-19 05:06:55,760 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-19 05:06:55,761 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 05:06:55,761 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 05:06:55,761 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 05:06:55,762 INFO L153 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d508abf2-52d9-45a9-ba02-d54add6f79c3/bin/utaipan-verify-t7M7D8N6sZ/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d508abf2-52d9-45a9-ba02-d54add6f79c3/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bdb04820b0552f240cac64f9b4eeb39d6636c8d16d50737ca938c89bab3fc009 [2023-11-19 05:06:56,176 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 05:06:56,210 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 05:06:56,213 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 05:06:56,215 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 05:06:56,215 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 05:06:56,217 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d508abf2-52d9-45a9-ba02-d54add6f79c3/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/hardness-nfm22/hardness_codestructure_normal_file-68.i [2023-11-19 05:06:59,355 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 05:06:59,670 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 05:06:59,675 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d508abf2-52d9-45a9-ba02-d54add6f79c3/sv-benchmarks/c/hardness-nfm22/hardness_codestructure_normal_file-68.i [2023-11-19 05:06:59,688 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d508abf2-52d9-45a9-ba02-d54add6f79c3/bin/utaipan-verify-t7M7D8N6sZ/data/f33d09710/853e4bf4d4144c09b45428f92c9e38a3/FLAGb0e17b1fe [2023-11-19 05:06:59,704 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d508abf2-52d9-45a9-ba02-d54add6f79c3/bin/utaipan-verify-t7M7D8N6sZ/data/f33d09710/853e4bf4d4144c09b45428f92c9e38a3 [2023-11-19 05:06:59,707 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 05:06:59,708 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 05:06:59,709 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 05:06:59,710 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 05:06:59,714 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 05:06:59,715 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:06:59" (1/1) ... [2023-11-19 05:06:59,716 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@67a00e78 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:06:59, skipping insertion in model container [2023-11-19 05:06:59,716 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:06:59" (1/1) ... [2023-11-19 05:06:59,746 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 05:06:59,943 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d508abf2-52d9-45a9-ba02-d54add6f79c3/sv-benchmarks/c/hardness-nfm22/hardness_codestructure_normal_file-68.i[913,926] [2023-11-19 05:07:00,023 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:07:00,048 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 05:07:00,069 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d508abf2-52d9-45a9-ba02-d54add6f79c3/sv-benchmarks/c/hardness-nfm22/hardness_codestructure_normal_file-68.i[913,926] [2023-11-19 05:07:00,113 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:07:00,133 INFO L206 MainTranslator]: Completed translation [2023-11-19 05:07:00,134 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:07:00 WrapperNode [2023-11-19 05:07:00,134 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 05:07:00,135 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 05:07:00,136 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 05:07:00,136 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 05:07:00,143 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:07:00" (1/1) ... [2023-11-19 05:07:00,168 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:07:00" (1/1) ... [2023-11-19 05:07:00,228 INFO L138 Inliner]: procedures = 27, calls = 29, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 114 [2023-11-19 05:07:00,228 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 05:07:00,229 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 05:07:00,229 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 05:07:00,229 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 05:07:00,241 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:07:00" (1/1) ... [2023-11-19 05:07:00,241 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:07:00" (1/1) ... [2023-11-19 05:07:00,272 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:07:00" (1/1) ... [2023-11-19 05:07:00,275 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:07:00" (1/1) ... [2023-11-19 05:07:00,285 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:07:00" (1/1) ... [2023-11-19 05:07:00,309 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:07:00" (1/1) ... [2023-11-19 05:07:00,311 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:07:00" (1/1) ... [2023-11-19 05:07:00,313 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:07:00" (1/1) ... [2023-11-19 05:07:00,317 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 05:07:00,326 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 05:07:00,327 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 05:07:00,327 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 05:07:00,328 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:07:00" (1/1) ... [2023-11-19 05:07:00,334 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:07:00,354 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d508abf2-52d9-45a9-ba02-d54add6f79c3/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:07:00,369 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d508abf2-52d9-45a9-ba02-d54add6f79c3/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 05:07:00,403 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d508abf2-52d9-45a9-ba02-d54add6f79c3/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 05:07:00,418 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 05:07:00,418 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-19 05:07:00,418 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-19 05:07:00,419 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-19 05:07:00,419 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 05:07:00,419 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 05:07:00,534 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 05:07:00,538 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 05:07:01,091 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 05:07:01,099 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 05:07:01,099 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-19 05:07:01,102 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:07:01 BoogieIcfgContainer [2023-11-19 05:07:01,103 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 05:07:01,105 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 05:07:01,105 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 05:07:01,121 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 05:07:01,121 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 05:06:59" (1/3) ... [2023-11-19 05:07:01,122 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19d36cf4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:07:01, skipping insertion in model container [2023-11-19 05:07:01,122 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:07:00" (2/3) ... [2023-11-19 05:07:01,123 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19d36cf4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:07:01, skipping insertion in model container [2023-11-19 05:07:01,123 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:07:01" (3/3) ... [2023-11-19 05:07:01,124 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_codestructure_normal_file-68.i [2023-11-19 05:07:01,139 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 05:07:01,139 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-19 05:07:01,185 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 05:07:01,190 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@59069347, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-19 05:07:01,191 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-19 05:07:01,194 INFO L276 IsEmpty]: Start isEmpty. Operand has 54 states, 35 states have (on average 1.4285714285714286) internal successors, (50), 36 states have internal predecessors, (50), 16 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2023-11-19 05:07:01,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2023-11-19 05:07:01,206 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:07:01,207 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:07:01,208 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:07:01,213 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:07:01,213 INFO L85 PathProgramCache]: Analyzing trace with hash 1297783535, now seen corresponding path program 1 times [2023-11-19 05:07:01,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 05:07:01,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1168790577] [2023-11-19 05:07:01,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:07:01,228 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 05:07:01,228 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d508abf2-52d9-45a9-ba02-d54add6f79c3/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 05:07:01,232 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d508abf2-52d9-45a9-ba02-d54add6f79c3/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-19 05:07:01,252 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d508abf2-52d9-45a9-ba02-d54add6f79c3/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-11-19 05:07:01,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:07:01,487 INFO L262 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-19 05:07:01,498 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:07:01,541 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-11-19 05:07:01,541 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:07:01,542 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 05:07:01,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1168790577] [2023-11-19 05:07:01,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1168790577] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:07:01,542 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:07:01,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 05:07:01,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341071178] [2023-11-19 05:07:01,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:07:01,549 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 05:07:01,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 05:07:01,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 05:07:01,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 05:07:01,578 INFO L87 Difference]: Start difference. First operand has 54 states, 35 states have (on average 1.4285714285714286) internal successors, (50), 36 states have internal predecessors, (50), 16 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) Second operand has 2 states, 2 states have (on average 13.5) internal successors, (27), 2 states have internal predecessors, (27), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-11-19 05:07:01,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:07:01,607 INFO L93 Difference]: Finished difference Result 101 states and 174 transitions. [2023-11-19 05:07:01,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 05:07:01,610 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 13.5) internal successors, (27), 2 states have internal predecessors, (27), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 104 [2023-11-19 05:07:01,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:07:01,621 INFO L225 Difference]: With dead ends: 101 [2023-11-19 05:07:01,621 INFO L226 Difference]: Without dead ends: 50 [2023-11-19 05:07:01,624 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 05:07:01,628 INFO L413 NwaCegarLoop]: 74 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 05:07:01,629 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 05:07:01,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2023-11-19 05:07:01,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2023-11-19 05:07:01,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 32 states have (on average 1.3125) internal successors, (42), 32 states have internal predecessors, (42), 16 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2023-11-19 05:07:01,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 74 transitions. [2023-11-19 05:07:01,677 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 74 transitions. Word has length 104 [2023-11-19 05:07:01,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:07:01,679 INFO L495 AbstractCegarLoop]: Abstraction has 50 states and 74 transitions. [2023-11-19 05:07:01,680 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 13.5) internal successors, (27), 2 states have internal predecessors, (27), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-11-19 05:07:01,680 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 74 transitions. [2023-11-19 05:07:01,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2023-11-19 05:07:01,683 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:07:01,684 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:07:01,692 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d508abf2-52d9-45a9-ba02-d54add6f79c3/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-11-19 05:07:01,890 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d508abf2-52d9-45a9-ba02-d54add6f79c3/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 05:07:01,890 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:07:01,891 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:07:01,891 INFO L85 PathProgramCache]: Analyzing trace with hash -1199191255, now seen corresponding path program 1 times [2023-11-19 05:07:01,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 05:07:01,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1142611516] [2023-11-19 05:07:01,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:07:01,893 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 05:07:01,893 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d508abf2-52d9-45a9-ba02-d54add6f79c3/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 05:07:01,895 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d508abf2-52d9-45a9-ba02-d54add6f79c3/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-19 05:07:01,900 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d508abf2-52d9-45a9-ba02-d54add6f79c3/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-11-19 05:07:02,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:07:02,149 INFO L262 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-19 05:07:02,157 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:07:02,531 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 253 proven. 24 refuted. 0 times theorem prover too weak. 203 trivial. 0 not checked. [2023-11-19 05:07:02,532 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 05:07:02,898 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 21 proven. 24 refuted. 0 times theorem prover too weak. 435 trivial. 0 not checked. [2023-11-19 05:07:02,899 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 05:07:02,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1142611516] [2023-11-19 05:07:02,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1142611516] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 05:07:02,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [942357952] [2023-11-19 05:07:02,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:07:02,904 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-19 05:07:02,904 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d508abf2-52d9-45a9-ba02-d54add6f79c3/bin/utaipan-verify-t7M7D8N6sZ/cvc4 [2023-11-19 05:07:02,911 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d508abf2-52d9-45a9-ba02-d54add6f79c3/bin/utaipan-verify-t7M7D8N6sZ/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-19 05:07:02,918 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d508abf2-52d9-45a9-ba02-d54add6f79c3/bin/utaipan-verify-t7M7D8N6sZ/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2023-11-19 05:07:03,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:07:03,288 INFO L262 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 05:07:03,293 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:07:03,447 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-11-19 05:07:03,448 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:07:03,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [942357952] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:07:03,448 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-19 05:07:03,448 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6, 6] total 10 [2023-11-19 05:07:03,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109857619] [2023-11-19 05:07:03,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:07:03,451 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 05:07:03,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 05:07:03,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 05:07:03,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2023-11-19 05:07:03,453 INFO L87 Difference]: Start difference. First operand 50 states and 74 transitions. Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-11-19 05:07:03,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:07:03,989 INFO L93 Difference]: Finished difference Result 146 states and 211 transitions. [2023-11-19 05:07:03,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 05:07:03,991 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 105 [2023-11-19 05:07:03,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:07:03,995 INFO L225 Difference]: With dead ends: 146 [2023-11-19 05:07:03,995 INFO L226 Difference]: Without dead ends: 99 [2023-11-19 05:07:03,996 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 314 GetRequests, 304 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2023-11-19 05:07:03,998 INFO L413 NwaCegarLoop]: 77 mSDtfsCounter, 104 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 131 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-19 05:07:03,998 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [104 Valid, 131 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-19 05:07:04,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2023-11-19 05:07:04,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 55. [2023-11-19 05:07:04,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 36 states have (on average 1.2777777777777777) internal successors, (46), 36 states have internal predecessors, (46), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2023-11-19 05:07:04,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 78 transitions. [2023-11-19 05:07:04,032 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 78 transitions. Word has length 105 [2023-11-19 05:07:04,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:07:04,033 INFO L495 AbstractCegarLoop]: Abstraction has 55 states and 78 transitions. [2023-11-19 05:07:04,034 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-11-19 05:07:04,034 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 78 transitions. [2023-11-19 05:07:04,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2023-11-19 05:07:04,036 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:07:04,036 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:07:04,044 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d508abf2-52d9-45a9-ba02-d54add6f79c3/bin/utaipan-verify-t7M7D8N6sZ/cvc4 --incremental --print-success --lang smt (4)] Forceful destruction successful, exit code 0 [2023-11-19 05:07:04,251 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d508abf2-52d9-45a9-ba02-d54add6f79c3/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-11-19 05:07:04,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d508abf2-52d9-45a9-ba02-d54add6f79c3/bin/utaipan-verify-t7M7D8N6sZ/cvc4 --incremental --print-success --lang smt,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d508abf2-52d9-45a9-ba02-d54add6f79c3/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 05:07:04,446 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:07:04,447 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:07:04,447 INFO L85 PathProgramCache]: Analyzing trace with hash -2008537881, now seen corresponding path program 1 times [2023-11-19 05:07:04,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 05:07:04,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [487537821] [2023-11-19 05:07:04,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:07:04,448 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 05:07:04,448 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d508abf2-52d9-45a9-ba02-d54add6f79c3/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 05:07:04,450 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d508abf2-52d9-45a9-ba02-d54add6f79c3/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-19 05:07:04,467 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d508abf2-52d9-45a9-ba02-d54add6f79c3/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-11-19 05:07:04,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:07:04,634 INFO L262 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-19 05:07:04,639 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:07:05,104 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 263 proven. 42 refuted. 0 times theorem prover too weak. 175 trivial. 0 not checked. [2023-11-19 05:07:05,105 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 05:07:05,600 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 42 proven. 45 refuted. 0 times theorem prover too weak. 393 trivial. 0 not checked. [2023-11-19 05:07:05,600 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 05:07:05,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [487537821] [2023-11-19 05:07:05,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [487537821] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 05:07:05,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1176814864] [2023-11-19 05:07:05,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:07:05,601 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-19 05:07:05,602 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d508abf2-52d9-45a9-ba02-d54add6f79c3/bin/utaipan-verify-t7M7D8N6sZ/cvc4 [2023-11-19 05:07:05,603 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d508abf2-52d9-45a9-ba02-d54add6f79c3/bin/utaipan-verify-t7M7D8N6sZ/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-19 05:07:05,613 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d508abf2-52d9-45a9-ba02-d54add6f79c3/bin/utaipan-verify-t7M7D8N6sZ/cvc4 --incremental --print-success --lang smt (6)] Waiting until timeout for monitored process [2023-11-19 05:07:06,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:07:06,213 INFO L262 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-19 05:07:06,217 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:07:06,383 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 253 proven. 24 refuted. 0 times theorem prover too weak. 203 trivial. 0 not checked. [2023-11-19 05:07:06,383 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 05:07:06,567 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 21 proven. 24 refuted. 0 times theorem prover too weak. 435 trivial. 0 not checked. [2023-11-19 05:07:06,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1176814864] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 05:07:06,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2032519374] [2023-11-19 05:07:06,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:07:06,568 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:07:06,568 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d508abf2-52d9-45a9-ba02-d54add6f79c3/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:07:06,571 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d508abf2-52d9-45a9-ba02-d54add6f79c3/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:07:06,577 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d508abf2-52d9-45a9-ba02-d54add6f79c3/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-19 05:07:06,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:07:06,733 INFO L262 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 05:07:06,736 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:07:06,894 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 253 proven. 24 refuted. 0 times theorem prover too weak. 203 trivial. 0 not checked. [2023-11-19 05:07:06,894 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 05:07:07,054 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 21 proven. 24 refuted. 0 times theorem prover too weak. 435 trivial. 0 not checked. [2023-11-19 05:07:07,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2032519374] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 05:07:07,054 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2023-11-19 05:07:07,055 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 5, 5, 5, 5] total 14 [2023-11-19 05:07:07,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094405919] [2023-11-19 05:07:07,055 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2023-11-19 05:07:07,057 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-19 05:07:07,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 05:07:07,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-19 05:07:07,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2023-11-19 05:07:07,059 INFO L87 Difference]: Start difference. First operand 55 states and 78 transitions. Second operand has 14 states, 14 states have (on average 4.285714285714286) internal successors, (60), 14 states have internal predecessors, (60), 3 states have call successors, (38), 3 states have call predecessors, (38), 7 states have return successors, (41), 3 states have call predecessors, (41), 3 states have call successors, (41) [2023-11-19 05:07:08,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:07:08,115 INFO L93 Difference]: Finished difference Result 118 states and 161 transitions. [2023-11-19 05:07:08,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-19 05:07:08,128 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.285714285714286) internal successors, (60), 14 states have internal predecessors, (60), 3 states have call successors, (38), 3 states have call predecessors, (38), 7 states have return successors, (41), 3 states have call predecessors, (41), 3 states have call successors, (41) Word has length 105 [2023-11-19 05:07:08,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:07:08,129 INFO L225 Difference]: With dead ends: 118 [2023-11-19 05:07:08,130 INFO L226 Difference]: Without dead ends: 66 [2023-11-19 05:07:08,131 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 635 GetRequests, 610 SyntacticMatches, 3 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=179, Invalid=373, Unknown=0, NotChecked=0, Total=552 [2023-11-19 05:07:08,132 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 163 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-19 05:07:08,132 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [165 Valid, 114 Invalid, 239 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-19 05:07:08,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2023-11-19 05:07:08,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 62. [2023-11-19 05:07:08,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 41 states have (on average 1.1951219512195121) internal successors, (49), 41 states have internal predecessors, (49), 16 states have call successors, (16), 4 states have call predecessors, (16), 4 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2023-11-19 05:07:08,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 81 transitions. [2023-11-19 05:07:08,154 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 81 transitions. Word has length 105 [2023-11-19 05:07:08,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:07:08,155 INFO L495 AbstractCegarLoop]: Abstraction has 62 states and 81 transitions. [2023-11-19 05:07:08,155 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.285714285714286) internal successors, (60), 14 states have internal predecessors, (60), 3 states have call successors, (38), 3 states have call predecessors, (38), 7 states have return successors, (41), 3 states have call predecessors, (41), 3 states have call successors, (41) [2023-11-19 05:07:08,155 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 81 transitions. [2023-11-19 05:07:08,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2023-11-19 05:07:08,157 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:07:08,158 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:07:08,189 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d508abf2-52d9-45a9-ba02-d54add6f79c3/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-19 05:07:08,379 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d508abf2-52d9-45a9-ba02-d54add6f79c3/bin/utaipan-verify-t7M7D8N6sZ/cvc4 --incremental --print-success --lang smt (6)] Forceful destruction successful, exit code 0 [2023-11-19 05:07:08,581 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d508abf2-52d9-45a9-ba02-d54add6f79c3/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-11-19 05:07:08,776 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d508abf2-52d9-45a9-ba02-d54add6f79c3/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d508abf2-52d9-45a9-ba02-d54add6f79c3/bin/utaipan-verify-t7M7D8N6sZ/cvc4 --incremental --print-success --lang smt,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d508abf2-52d9-45a9-ba02-d54add6f79c3/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 05:07:08,777 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:07:08,777 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:07:08,777 INFO L85 PathProgramCache]: Analyzing trace with hash -1931552540, now seen corresponding path program 1 times [2023-11-19 05:07:08,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 05:07:08,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1989731440] [2023-11-19 05:07:08,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:07:08,778 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 05:07:08,778 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d508abf2-52d9-45a9-ba02-d54add6f79c3/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 05:07:08,780 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d508abf2-52d9-45a9-ba02-d54add6f79c3/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-19 05:07:08,781 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d508abf2-52d9-45a9-ba02-d54add6f79c3/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2023-11-19 05:07:08,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:07:08,984 INFO L262 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 21 conjunts are in the unsatisfiable core [2023-11-19 05:07:08,989 INFO L285 TraceCheckSpWp]: Computing forward predicates...