./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-1loop_file-64.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c96ce3dc-0bcc-4cfb-aa7f-40fc806aeae9/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c96ce3dc-0bcc-4cfb-aa7f-40fc806aeae9/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_c96ce3dc-0bcc-4cfb-aa7f-40fc806aeae9/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c96ce3dc-0bcc-4cfb-aa7f-40fc806aeae9/bin/utaipan-verify-t7M7D8N6sZ/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-1loop_file-64.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c96ce3dc-0bcc-4cfb-aa7f-40fc806aeae9/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_c96ce3dc-0bcc-4cfb-aa7f-40fc806aeae9/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 b6dd2ed6c1bce1a10f9a63c051c029a066fa5b3cc478546a4f140edcb3bcb50c --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 05:21:50,524 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 05:21:50,660 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c96ce3dc-0bcc-4cfb-aa7f-40fc806aeae9/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-11-19 05:21:50,665 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 05:21:50,666 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 05:21:50,693 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 05:21:50,697 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 05:21:50,698 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 05:21:50,699 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 05:21:50,701 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 05:21:50,702 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 05:21:50,702 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 05:21:50,703 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 05:21:50,714 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-19 05:21:50,714 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 05:21:50,715 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 05:21:50,715 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-19 05:21:50,716 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-19 05:21:50,716 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 05:21:50,717 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-19 05:21:50,717 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-19 05:21:50,718 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-19 05:21:50,719 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 05:21:50,719 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 05:21:50,719 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 05:21:50,720 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 05:21:50,720 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 05:21:50,721 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 05:21:50,721 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 05:21:50,721 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 05:21:50,722 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 05:21:50,722 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 05:21:50,722 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 05:21:50,723 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 05:21:50,723 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 05:21:50,723 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 05:21:50,723 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:21:50,724 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 05:21:50,724 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 05:21:50,724 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 05:21:50,724 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-19 05:21:50,725 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 05:21:50,725 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 05:21:50,725 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 05:21:50,725 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 05:21:50,725 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_c96ce3dc-0bcc-4cfb-aa7f-40fc806aeae9/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c96ce3dc-0bcc-4cfb-aa7f-40fc806aeae9/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b6dd2ed6c1bce1a10f9a63c051c029a066fa5b3cc478546a4f140edcb3bcb50c [2023-11-19 05:21:51,054 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 05:21:51,079 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 05:21:51,082 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 05:21:51,083 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 05:21:51,084 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 05:21:51,085 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c96ce3dc-0bcc-4cfb-aa7f-40fc806aeae9/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-1loop_file-64.i [2023-11-19 05:21:54,466 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 05:21:54,703 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 05:21:54,703 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c96ce3dc-0bcc-4cfb-aa7f-40fc806aeae9/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-1loop_file-64.i [2023-11-19 05:21:54,714 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c96ce3dc-0bcc-4cfb-aa7f-40fc806aeae9/bin/utaipan-verify-t7M7D8N6sZ/data/13fee581b/e12ffb613b134f5ba82b38a1e0df97f1/FLAGcce1a5267 [2023-11-19 05:21:54,730 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c96ce3dc-0bcc-4cfb-aa7f-40fc806aeae9/bin/utaipan-verify-t7M7D8N6sZ/data/13fee581b/e12ffb613b134f5ba82b38a1e0df97f1 [2023-11-19 05:21:54,733 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 05:21:54,735 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 05:21:54,736 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 05:21:54,736 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 05:21:54,743 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 05:21:54,744 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:21:54" (1/1) ... [2023-11-19 05:21:54,745 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@753f0777 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:21:54, skipping insertion in model container [2023-11-19 05:21:54,745 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:21:54" (1/1) ... [2023-11-19 05:21:54,776 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 05:21:54,970 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_c96ce3dc-0bcc-4cfb-aa7f-40fc806aeae9/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-1loop_file-64.i[915,928] [2023-11-19 05:21:55,023 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:21:55,037 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 05:21:55,052 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_c96ce3dc-0bcc-4cfb-aa7f-40fc806aeae9/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-1loop_file-64.i[915,928] [2023-11-19 05:21:55,077 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:21:55,094 INFO L206 MainTranslator]: Completed translation [2023-11-19 05:21:55,095 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:21:55 WrapperNode [2023-11-19 05:21:55,095 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 05:21:55,097 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 05:21:55,097 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 05:21:55,097 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 05:21:55,106 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:21:55" (1/1) ... [2023-11-19 05:21:55,118 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:21:55" (1/1) ... [2023-11-19 05:21:55,166 INFO L138 Inliner]: procedures = 26, calls = 25, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 123 [2023-11-19 05:21:55,167 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 05:21:55,168 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 05:21:55,168 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 05:21:55,168 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 05:21:55,180 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:21:55" (1/1) ... [2023-11-19 05:21:55,180 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:21:55" (1/1) ... [2023-11-19 05:21:55,184 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:21:55" (1/1) ... [2023-11-19 05:21:55,185 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:21:55" (1/1) ... [2023-11-19 05:21:55,196 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:21:55" (1/1) ... [2023-11-19 05:21:55,201 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:21:55" (1/1) ... [2023-11-19 05:21:55,204 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:21:55" (1/1) ... [2023-11-19 05:21:55,206 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:21:55" (1/1) ... [2023-11-19 05:21:55,211 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 05:21:55,212 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 05:21:55,212 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 05:21:55,212 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 05:21:55,213 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:21:55" (1/1) ... [2023-11-19 05:21:55,221 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:21:55,238 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c96ce3dc-0bcc-4cfb-aa7f-40fc806aeae9/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:21:55,254 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c96ce3dc-0bcc-4cfb-aa7f-40fc806aeae9/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 05:21:55,289 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c96ce3dc-0bcc-4cfb-aa7f-40fc806aeae9/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 05:21:55,307 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 05:21:55,308 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-19 05:21:55,308 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-19 05:21:55,308 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 05:21:55,308 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 05:21:55,308 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 05:21:55,516 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 05:21:55,520 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 05:21:55,986 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 05:21:56,260 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 05:21:56,261 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-19 05:21:56,268 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:21:56 BoogieIcfgContainer [2023-11-19 05:21:56,269 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 05:21:56,272 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 05:21:56,272 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 05:21:56,276 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 05:21:56,276 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 05:21:54" (1/3) ... [2023-11-19 05:21:56,279 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4638cc18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:21:56, skipping insertion in model container [2023-11-19 05:21:56,280 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:21:55" (2/3) ... [2023-11-19 05:21:56,282 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4638cc18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:21:56, skipping insertion in model container [2023-11-19 05:21:56,283 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:21:56" (3/3) ... [2023-11-19 05:21:56,285 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_loopvsstraightlinecode_25-1loop_file-64.i [2023-11-19 05:21:56,311 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 05:21:56,311 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-19 05:21:56,382 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 05:21:56,393 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;@3e9e86e9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-19 05:21:56,394 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-19 05:21:56,400 INFO L276 IsEmpty]: Start isEmpty. Operand has 27 states, 12 states have (on average 1.25) internal successors, (15), 13 states have internal predecessors, (15), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-11-19 05:21:56,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2023-11-19 05:21:56,412 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:21:56,413 INFO L195 NwaCegarLoop]: trace histogram [12, 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 05:21:56,413 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:21:56,419 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:21:56,419 INFO L85 PathProgramCache]: Analyzing trace with hash -796020996, now seen corresponding path program 1 times [2023-11-19 05:21:56,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:21:56,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [283613759] [2023-11-19 05:21:56,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:21:56,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:21:56,659 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 05:21:56,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [966200430] [2023-11-19 05:21:56,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:21:56,660 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:21:56,661 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c96ce3dc-0bcc-4cfb-aa7f-40fc806aeae9/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:21:56,663 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c96ce3dc-0bcc-4cfb-aa7f-40fc806aeae9/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:21:56,690 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c96ce3dc-0bcc-4cfb-aa7f-40fc806aeae9/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 05:21:57,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 05:21:57,359 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 05:21:57,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 05:21:57,554 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-11-19 05:21:57,557 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-19 05:21:57,558 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-19 05:21:57,573 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c96ce3dc-0bcc-4cfb-aa7f-40fc806aeae9/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-19 05:21:57,768 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c96ce3dc-0bcc-4cfb-aa7f-40fc806aeae9/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-19 05:21:57,773 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-11-19 05:21:57,777 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-19 05:21:57,830 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 05:21:57 BoogieIcfgContainer [2023-11-19 05:21:57,830 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-19 05:21:57,831 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-19 05:21:57,831 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-19 05:21:57,832 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-19 05:21:57,832 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:21:56" (3/4) ... [2023-11-19 05:21:57,835 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-19 05:21:57,836 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-19 05:21:57,837 INFO L158 Benchmark]: Toolchain (without parser) took 3102.35ms. Allocated memory is still 161.5MB. Free memory was 126.4MB in the beginning and 68.2MB in the end (delta: 58.2MB). Peak memory consumption was 57.2MB. Max. memory is 16.1GB. [2023-11-19 05:21:57,838 INFO L158 Benchmark]: CDTParser took 0.35ms. Allocated memory is still 113.2MB. Free memory is still 86.0MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 05:21:57,838 INFO L158 Benchmark]: CACSL2BoogieTranslator took 359.77ms. Allocated memory is still 161.5MB. Free memory was 126.4MB in the beginning and 113.8MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-19 05:21:57,839 INFO L158 Benchmark]: Boogie Procedure Inliner took 70.47ms. Allocated memory is still 161.5MB. Free memory was 113.8MB in the beginning and 111.0MB in the end (delta: 2.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-19 05:21:57,840 INFO L158 Benchmark]: Boogie Preprocessor took 43.07ms. Allocated memory is still 161.5MB. Free memory was 111.0MB in the beginning and 108.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 05:21:57,840 INFO L158 Benchmark]: RCFGBuilder took 1056.98ms. Allocated memory is still 161.5MB. Free memory was 108.9MB in the beginning and 97.6MB in the end (delta: 11.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-19 05:21:57,841 INFO L158 Benchmark]: TraceAbstraction took 1558.82ms. Allocated memory is still 161.5MB. Free memory was 96.7MB in the beginning and 69.1MB in the end (delta: 27.5MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. [2023-11-19 05:21:57,842 INFO L158 Benchmark]: Witness Printer took 4.85ms. Allocated memory is still 161.5MB. Free memory was 69.1MB in the beginning and 68.2MB in the end (delta: 906.8kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 05:21:57,846 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35ms. Allocated memory is still 113.2MB. Free memory is still 86.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 359.77ms. Allocated memory is still 161.5MB. Free memory was 126.4MB in the beginning and 113.8MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 70.47ms. Allocated memory is still 161.5MB. Free memory was 113.8MB in the beginning and 111.0MB in the end (delta: 2.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 43.07ms. Allocated memory is still 161.5MB. Free memory was 111.0MB in the beginning and 108.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 1056.98ms. Allocated memory is still 161.5MB. Free memory was 108.9MB in the beginning and 97.6MB in the end (delta: 11.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 1558.82ms. Allocated memory is still 161.5MB. Free memory was 96.7MB in the beginning and 69.1MB in the end (delta: 27.5MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. * Witness Printer took 4.85ms. Allocated memory is still 161.5MB. Free memory was 69.1MB in the beginning and 68.2MB in the end (delta: 906.8kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 19]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 82, overapproximation of someBinaryFLOATComparisonOperation at line 82, overapproximation of bitwiseAnd at line 38. Possible FailurePath: [L21] unsigned char isInitial = 0; [L22] double var_1_1 = 0.9; [L23] unsigned long int var_1_3 = 2941876006; [L24] double var_1_5 = 127.422; [L25] unsigned short int var_1_6 = 10; [L26] unsigned char var_1_7 = 1; [L27] unsigned long int var_1_9 = 4; [L28] unsigned short int var_1_11 = 44699; [L29] signed short int var_1_13 = 2; [L30] unsigned char var_1_15 = 0; [L31] unsigned char var_1_16 = 16; [L32] float var_1_17 = 8.125; [L86] isInitial = 1 [L87] FCALL initially() [L88] int k_loop; [L89] k_loop = 0 VAL [isInitial=1, k_loop=0, var_1_11=44699, var_1_13=2, var_1_15=0, var_1_16=16, var_1_17=65/8, var_1_1=9/10, var_1_3=2941876006, var_1_5=63711/500, var_1_6=10, var_1_7=1, var_1_9=4] [L89] COND TRUE k_loop < 1 [L90] FCALL updateLastVariables() [L91] CALL updateVariables() [L60] var_1_3 = __VERIFIER_nondet_ulong() [L61] CALL assume_abort_if_not(var_1_3 >= 2147483647) VAL [\old(cond)=1, isInitial=1, var_1_11=44699, var_1_13=2, var_1_15=0, var_1_16=16, var_1_17=65/8, var_1_1=9/10, var_1_3=4294967293, var_1_5=63711/500, var_1_6=10, var_1_7=1, var_1_9=4] [L20] COND FALSE !(!cond) [L61] RET assume_abort_if_not(var_1_3 >= 2147483647) VAL [isInitial=1, var_1_11=44699, var_1_13=2, var_1_15=0, var_1_16=16, var_1_17=65/8, var_1_1=9/10, var_1_3=4294967293, var_1_5=63711/500, var_1_6=10, var_1_7=1, var_1_9=4] [L62] CALL assume_abort_if_not(var_1_3 <= 4294967295) VAL [\old(cond)=1, isInitial=1, var_1_11=44699, var_1_13=2, var_1_15=0, var_1_16=16, var_1_17=65/8, var_1_1=9/10, var_1_3=4294967293, var_1_5=63711/500, var_1_6=10, var_1_7=1, var_1_9=4] [L20] COND FALSE !(!cond) [L62] RET assume_abort_if_not(var_1_3 <= 4294967295) VAL [isInitial=1, var_1_11=44699, var_1_13=2, var_1_15=0, var_1_16=16, var_1_17=65/8, var_1_1=9/10, var_1_3=4294967293, var_1_5=63711/500, var_1_6=10, var_1_7=1, var_1_9=4] [L63] var_1_5 = __VERIFIER_nondet_double() [L64] CALL assume_abort_if_not((var_1_5 >= -922337.2036854765600e+13F && var_1_5 <= -1.0e-20F) || (var_1_5 <= 9223372.036854765600e+12F && var_1_5 >= 1.0e-20F )) VAL [\old(cond)=1, isInitial=1, var_1_11=44699, var_1_13=2, var_1_15=0, var_1_16=16, var_1_17=65/8, var_1_1=9/10, var_1_3=4294967293, var_1_5=2, var_1_6=10, var_1_7=1, var_1_9=4] [L20] COND FALSE !(!cond) [L64] RET assume_abort_if_not((var_1_5 >= -922337.2036854765600e+13F && var_1_5 <= -1.0e-20F) || (var_1_5 <= 9223372.036854765600e+12F && var_1_5 >= 1.0e-20F )) VAL [isInitial=1, var_1_11=44699, var_1_13=2, var_1_15=0, var_1_16=16, var_1_17=65/8, var_1_1=9/10, var_1_3=4294967293, var_1_5=2, var_1_6=10, var_1_7=1, var_1_9=4] [L65] var_1_7 = __VERIFIER_nondet_uchar() [L66] CALL assume_abort_if_not(var_1_7 >= 0) VAL [\old(cond)=1, isInitial=1, var_1_11=44699, var_1_13=2, var_1_15=0, var_1_16=16, var_1_17=65/8, var_1_1=9/10, var_1_3=4294967293, var_1_5=2, var_1_6=10, var_1_7=1, var_1_9=4] [L20] COND FALSE !(!cond) [L66] RET assume_abort_if_not(var_1_7 >= 0) VAL [isInitial=1, var_1_11=44699, var_1_13=2, var_1_15=0, var_1_16=16, var_1_17=65/8, var_1_1=9/10, var_1_3=4294967293, var_1_5=2, var_1_6=10, var_1_7=1, var_1_9=4] [L67] CALL assume_abort_if_not(var_1_7 <= 1) VAL [\old(cond)=1, isInitial=1, var_1_11=44699, var_1_13=2, var_1_15=0, var_1_16=16, var_1_17=65/8, var_1_1=9/10, var_1_3=4294967293, var_1_5=2, var_1_6=10, var_1_7=1, var_1_9=4] [L20] COND FALSE !(!cond) [L67] RET assume_abort_if_not(var_1_7 <= 1) VAL [isInitial=1, var_1_11=44699, var_1_13=2, var_1_15=0, var_1_16=16, var_1_17=65/8, var_1_1=9/10, var_1_3=4294967293, var_1_5=2, var_1_6=10, var_1_7=1, var_1_9=4] [L68] var_1_9 = __VERIFIER_nondet_ulong() [L69] CALL assume_abort_if_not(var_1_9 >= 0) VAL [\old(cond)=1, isInitial=1, var_1_11=44699, var_1_13=2, var_1_15=0, var_1_16=16, var_1_17=65/8, var_1_1=9/10, var_1_3=4294967293, var_1_5=2, var_1_6=10, var_1_7=1, var_1_9=3] [L20] COND FALSE !(!cond) [L69] RET assume_abort_if_not(var_1_9 >= 0) VAL [isInitial=1, var_1_11=44699, var_1_13=2, var_1_15=0, var_1_16=16, var_1_17=65/8, var_1_1=9/10, var_1_3=4294967293, var_1_5=2, var_1_6=10, var_1_7=1, var_1_9=3] [L70] CALL assume_abort_if_not(var_1_9 <= 4294967295) VAL [\old(cond)=1, isInitial=1, var_1_11=44699, var_1_13=2, var_1_15=0, var_1_16=16, var_1_17=65/8, var_1_1=9/10, var_1_3=4294967293, var_1_5=2, var_1_6=10, var_1_7=1, var_1_9=3] [L20] COND FALSE !(!cond) [L70] RET assume_abort_if_not(var_1_9 <= 4294967295) VAL [isInitial=1, var_1_11=44699, var_1_13=2, var_1_15=0, var_1_16=16, var_1_17=65/8, var_1_1=9/10, var_1_3=4294967293, var_1_5=2, var_1_6=10, var_1_7=1, var_1_9=3] [L71] CALL assume_abort_if_not(var_1_9 != 0) VAL [\old(cond)=1, isInitial=1, var_1_11=44699, var_1_13=2, var_1_15=0, var_1_16=16, var_1_17=65/8, var_1_1=9/10, var_1_3=4294967293, var_1_5=2, var_1_6=10, var_1_7=1, var_1_9=3] [L20] COND FALSE !(!cond) [L71] RET assume_abort_if_not(var_1_9 != 0) VAL [isInitial=1, var_1_11=44699, var_1_13=2, var_1_15=0, var_1_16=16, var_1_17=65/8, var_1_1=9/10, var_1_3=4294967293, var_1_5=2, var_1_6=10, var_1_7=1, var_1_9=3] [L72] var_1_11 = __VERIFIER_nondet_ushort() [L73] CALL assume_abort_if_not(var_1_11 >= 32767) VAL [\old(cond)=1, isInitial=1, var_1_11=32767, var_1_13=2, var_1_15=0, var_1_16=16, var_1_17=65/8, var_1_1=9/10, var_1_3=4294967293, var_1_5=2, var_1_6=10, var_1_7=1, var_1_9=3] [L20] COND FALSE !(!cond) [L73] RET assume_abort_if_not(var_1_11 >= 32767) VAL [isInitial=1, var_1_11=32767, var_1_13=2, var_1_15=0, var_1_16=16, var_1_17=65/8, var_1_1=9/10, var_1_3=4294967293, var_1_5=2, var_1_6=10, var_1_7=1, var_1_9=3] [L74] CALL assume_abort_if_not(var_1_11 <= 65534) VAL [\old(cond)=1, isInitial=1, var_1_11=32767, var_1_13=2, var_1_15=0, var_1_16=16, var_1_17=65/8, var_1_1=9/10, var_1_3=4294967293, var_1_5=2, var_1_6=10, var_1_7=1, var_1_9=3] [L20] COND FALSE !(!cond) [L74] RET assume_abort_if_not(var_1_11 <= 65534) VAL [isInitial=1, var_1_11=32767, var_1_13=2, var_1_15=0, var_1_16=16, var_1_17=65/8, var_1_1=9/10, var_1_3=4294967293, var_1_5=2, var_1_6=10, var_1_7=1, var_1_9=3] [L75] var_1_16 = __VERIFIER_nondet_uchar() [L76] CALL assume_abort_if_not(var_1_16 >= 0) VAL [\old(cond)=1, isInitial=1, var_1_11=32767, var_1_13=2, var_1_15=0, var_1_16=10, var_1_17=65/8, var_1_1=9/10, var_1_3=4294967293, var_1_5=2, var_1_6=10, var_1_7=1, var_1_9=3] [L20] COND FALSE !(!cond) [L76] RET assume_abort_if_not(var_1_16 >= 0) VAL [isInitial=1, var_1_11=32767, var_1_13=2, var_1_15=0, var_1_16=10, var_1_17=65/8, var_1_1=9/10, var_1_3=4294967293, var_1_5=2, var_1_6=10, var_1_7=1, var_1_9=3] [L77] CALL assume_abort_if_not(var_1_16 <= 254) VAL [\old(cond)=1, isInitial=1, var_1_11=32767, var_1_13=2, var_1_15=0, var_1_16=10, var_1_17=65/8, var_1_1=9/10, var_1_3=4294967293, var_1_5=2, var_1_6=10, var_1_7=1, var_1_9=3] [L20] COND FALSE !(!cond) [L77] RET assume_abort_if_not(var_1_16 <= 254) VAL [isInitial=1, var_1_11=32767, var_1_13=2, var_1_15=0, var_1_16=10, var_1_17=65/8, var_1_1=9/10, var_1_3=4294967293, var_1_5=2, var_1_6=10, var_1_7=1, var_1_9=3] [L91] RET updateVariables() [L92] CALL step() [L36] var_1_15 = var_1_16 [L37] var_1_17 = var_1_5 [L38] EXPR var_1_15 & var_1_15 [L38] unsigned long int stepLocal_2 = var_1_3 * (var_1_15 & var_1_15); [L39] COND TRUE \read(var_1_7) [L40] COND FALSE !(stepLocal_2 <= (var_1_15 / var_1_9)) [L43] var_1_6 = (var_1_11 - ((((var_1_15) < 0 ) ? -(var_1_15) : (var_1_15)))) [L48] var_1_13 = var_1_15 [L49] signed long int stepLocal_1 = var_1_6 * var_1_15; [L50] unsigned char stepLocal_0 = var_1_15; [L51] COND TRUE stepLocal_0 <= (var_1_3 - var_1_6) [L52] COND FALSE !(var_1_3 < stepLocal_1) [L55] var_1_1 = var_1_5 [L92] RET step() [L93] CALL, EXPR property() [L82] EXPR ((var_1_15 <= (var_1_3 - var_1_6)) ? ((var_1_3 < (var_1_6 * var_1_15)) ? (var_1_1 == ((double) var_1_5)) : (var_1_1 == ((double) var_1_5))) : 1) && (var_1_7 ? (((var_1_3 * (var_1_15 & var_1_15)) <= (var_1_15 / var_1_9)) ? (var_1_6 == ((unsigned short int) (47342 - var_1_15))) : (var_1_6 == ((unsigned short int) (var_1_11 - ((((var_1_15) < 0 ) ? -(var_1_15) : (var_1_15))))))) : (var_1_6 == ((unsigned short int) (((((var_1_15) > (var_1_15)) ? (var_1_15) : (var_1_15))) + 1)))) [L82] EXPR var_1_7 ? (((var_1_3 * (var_1_15 & var_1_15)) <= (var_1_15 / var_1_9)) ? (var_1_6 == ((unsigned short int) (47342 - var_1_15))) : (var_1_6 == ((unsigned short int) (var_1_11 - ((((var_1_15) < 0 ) ? -(var_1_15) : (var_1_15))))))) : (var_1_6 == ((unsigned short int) (((((var_1_15) > (var_1_15)) ? (var_1_15) : (var_1_15))) + 1))) [L82] EXPR var_1_15 & var_1_15 [L82] EXPR var_1_7 ? (((var_1_3 * (var_1_15 & var_1_15)) <= (var_1_15 / var_1_9)) ? (var_1_6 == ((unsigned short int) (47342 - var_1_15))) : (var_1_6 == ((unsigned short int) (var_1_11 - ((((var_1_15) < 0 ) ? -(var_1_15) : (var_1_15))))))) : (var_1_6 == ((unsigned short int) (((((var_1_15) > (var_1_15)) ? (var_1_15) : (var_1_15))) + 1))) [L82] EXPR ((var_1_15 <= (var_1_3 - var_1_6)) ? ((var_1_3 < (var_1_6 * var_1_15)) ? (var_1_1 == ((double) var_1_5)) : (var_1_1 == ((double) var_1_5))) : 1) && (var_1_7 ? (((var_1_3 * (var_1_15 & var_1_15)) <= (var_1_15 / var_1_9)) ? (var_1_6 == ((unsigned short int) (47342 - var_1_15))) : (var_1_6 == ((unsigned short int) (var_1_11 - ((((var_1_15) < 0 ) ? -(var_1_15) : (var_1_15))))))) : (var_1_6 == ((unsigned short int) (((((var_1_15) > (var_1_15)) ? (var_1_15) : (var_1_15))) + 1)))) [L82-L83] return (((((var_1_15 <= (var_1_3 - var_1_6)) ? ((var_1_3 < (var_1_6 * var_1_15)) ? (var_1_1 == ((double) var_1_5)) : (var_1_1 == ((double) var_1_5))) : 1) && (var_1_7 ? (((var_1_3 * (var_1_15 & var_1_15)) <= (var_1_15 / var_1_9)) ? (var_1_6 == ((unsigned short int) (47342 - var_1_15))) : (var_1_6 == ((unsigned short int) (var_1_11 - ((((var_1_15) < 0 ) ? -(var_1_15) : (var_1_15))))))) : (var_1_6 == ((unsigned short int) (((((var_1_15) > (var_1_15)) ? (var_1_15) : (var_1_15))) + 1))))) && (var_1_13 == ((signed short int) var_1_15))) && (var_1_15 == ((unsigned char) var_1_16))) && (var_1_17 == ((float) var_1_5)) ; [L93] RET, EXPR property() [L93] CALL __VERIFIER_assert(property()) [L19] COND TRUE !(cond) VAL [\old(cond)=0, cond=0, isInitial=1, var_1_11=32767, var_1_13=10, var_1_15=10, var_1_16=10, var_1_17=2, var_1_1=2, var_1_3=4294967293, var_1_5=2, var_1_6=32757, var_1_7=1, var_1_9=3] [L19] reach_error() VAL [\old(cond)=0, cond=0, isInitial=1, var_1_11=32767, var_1_13=10, var_1_15=10, var_1_16=10, var_1_17=2, var_1_1=2, var_1_3=4294967293, var_1_5=2, var_1_6=32757, var_1_7=1, var_1_9=3] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 27 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.4s, OverallIterations: 1, TraceHistogramMax: 12, 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=27occurred 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, 0.7s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 46 NumberOfCodeBlocks, 46 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 05:21:57,889 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c96ce3dc-0bcc-4cfb-aa7f-40fc806aeae9/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-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c96ce3dc-0bcc-4cfb-aa7f-40fc806aeae9/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c96ce3dc-0bcc-4cfb-aa7f-40fc806aeae9/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_c96ce3dc-0bcc-4cfb-aa7f-40fc806aeae9/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c96ce3dc-0bcc-4cfb-aa7f-40fc806aeae9/bin/utaipan-verify-t7M7D8N6sZ/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-1loop_file-64.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c96ce3dc-0bcc-4cfb-aa7f-40fc806aeae9/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_c96ce3dc-0bcc-4cfb-aa7f-40fc806aeae9/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 b6dd2ed6c1bce1a10f9a63c051c029a066fa5b3cc478546a4f140edcb3bcb50c --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 05:22:00,647 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 05:22:00,772 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c96ce3dc-0bcc-4cfb-aa7f-40fc806aeae9/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2023-11-19 05:22:00,780 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 05:22:00,781 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 05:22:00,822 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 05:22:00,823 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 05:22:00,824 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 05:22:00,825 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 05:22:00,830 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 05:22:00,830 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 05:22:00,831 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 05:22:00,831 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 05:22:00,833 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 05:22:00,833 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 05:22:00,834 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 05:22:00,835 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 05:22:00,836 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 05:22:00,836 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 05:22:00,837 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 05:22:00,838 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 05:22:00,838 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 05:22:00,838 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 05:22:00,839 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 05:22:00,839 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-19 05:22:00,840 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-19 05:22:00,840 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-19 05:22:00,840 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 05:22:00,841 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 05:22:00,841 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 05:22:00,843 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 05:22:00,843 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 05:22:00,843 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 05:22:00,844 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:22:00,844 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 05:22:00,844 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 05:22:00,845 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 05:22:00,845 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-11-19 05:22:00,845 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-19 05:22:00,846 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 05:22:00,846 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 05:22:00,847 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 05:22:00,847 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_c96ce3dc-0bcc-4cfb-aa7f-40fc806aeae9/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c96ce3dc-0bcc-4cfb-aa7f-40fc806aeae9/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b6dd2ed6c1bce1a10f9a63c051c029a066fa5b3cc478546a4f140edcb3bcb50c [2023-11-19 05:22:01,261 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 05:22:01,285 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 05:22:01,288 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 05:22:01,289 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 05:22:01,290 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 05:22:01,291 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c96ce3dc-0bcc-4cfb-aa7f-40fc806aeae9/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-1loop_file-64.i [2023-11-19 05:22:04,593 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 05:22:04,962 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 05:22:04,964 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c96ce3dc-0bcc-4cfb-aa7f-40fc806aeae9/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-1loop_file-64.i [2023-11-19 05:22:04,981 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c96ce3dc-0bcc-4cfb-aa7f-40fc806aeae9/bin/utaipan-verify-t7M7D8N6sZ/data/3ac144ade/8a2082e6dca244c59aee327ff3e581f9/FLAGbed7f050f [2023-11-19 05:22:04,998 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c96ce3dc-0bcc-4cfb-aa7f-40fc806aeae9/bin/utaipan-verify-t7M7D8N6sZ/data/3ac144ade/8a2082e6dca244c59aee327ff3e581f9 [2023-11-19 05:22:05,001 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 05:22:05,003 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 05:22:05,004 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 05:22:05,005 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 05:22:05,011 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 05:22:05,012 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:22:04" (1/1) ... [2023-11-19 05:22:05,013 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47a4298e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:22:05, skipping insertion in model container [2023-11-19 05:22:05,014 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:22:04" (1/1) ... [2023-11-19 05:22:05,048 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 05:22:05,226 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_c96ce3dc-0bcc-4cfb-aa7f-40fc806aeae9/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-1loop_file-64.i[915,928] [2023-11-19 05:22:05,275 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:22:05,303 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 05:22:05,326 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_c96ce3dc-0bcc-4cfb-aa7f-40fc806aeae9/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-1loop_file-64.i[915,928] [2023-11-19 05:22:05,386 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:22:05,425 INFO L206 MainTranslator]: Completed translation [2023-11-19 05:22:05,426 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:22:05 WrapperNode [2023-11-19 05:22:05,427 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 05:22:05,429 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 05:22:05,429 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 05:22:05,429 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 05:22:05,440 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:22:05" (1/1) ... [2023-11-19 05:22:05,474 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:22:05" (1/1) ... [2023-11-19 05:22:05,511 INFO L138 Inliner]: procedures = 27, calls = 25, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 95 [2023-11-19 05:22:05,512 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 05:22:05,513 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 05:22:05,513 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 05:22:05,513 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 05:22:05,531 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:22:05" (1/1) ... [2023-11-19 05:22:05,531 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:22:05" (1/1) ... [2023-11-19 05:22:05,543 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:22:05" (1/1) ... [2023-11-19 05:22:05,547 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:22:05" (1/1) ... [2023-11-19 05:22:05,568 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:22:05" (1/1) ... [2023-11-19 05:22:05,580 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:22:05" (1/1) ... [2023-11-19 05:22:05,585 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:22:05" (1/1) ... [2023-11-19 05:22:05,594 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:22:05" (1/1) ... [2023-11-19 05:22:05,599 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 05:22:05,610 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 05:22:05,611 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 05:22:05,611 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 05:22:05,612 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:22:05" (1/1) ... [2023-11-19 05:22:05,620 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:22:05,635 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c96ce3dc-0bcc-4cfb-aa7f-40fc806aeae9/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:22:05,656 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c96ce3dc-0bcc-4cfb-aa7f-40fc806aeae9/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 05:22:05,704 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c96ce3dc-0bcc-4cfb-aa7f-40fc806aeae9/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 05:22:05,740 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 05:22:05,741 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-19 05:22:05,741 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-19 05:22:05,741 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-19 05:22:05,741 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 05:22:05,742 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 05:22:05,871 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 05:22:05,875 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 05:22:06,677 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 05:22:06,688 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 05:22:06,688 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-19 05:22:06,693 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:22:06 BoogieIcfgContainer [2023-11-19 05:22:06,693 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 05:22:06,696 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 05:22:06,697 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 05:22:06,701 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 05:22:06,702 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 05:22:04" (1/3) ... [2023-11-19 05:22:06,703 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e2ae0ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:22:06, skipping insertion in model container [2023-11-19 05:22:06,703 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:22:05" (2/3) ... [2023-11-19 05:22:06,704 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e2ae0ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:22:06, skipping insertion in model container [2023-11-19 05:22:06,704 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:22:06" (3/3) ... [2023-11-19 05:22:06,706 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_loopvsstraightlinecode_25-1loop_file-64.i [2023-11-19 05:22:06,743 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 05:22:06,743 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-19 05:22:06,825 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 05:22:06,837 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;@39d8ff99, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-19 05:22:06,837 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-19 05:22:06,844 INFO L276 IsEmpty]: Start isEmpty. Operand has 43 states, 28 states have (on average 1.3214285714285714) internal successors, (37), 29 states have internal predecessors, (37), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-11-19 05:22:06,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-11-19 05:22:06,858 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:22:06,860 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 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 05:22:06,863 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:22:06,871 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:22:06,872 INFO L85 PathProgramCache]: Analyzing trace with hash 1005874552, now seen corresponding path program 1 times [2023-11-19 05:22:06,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 05:22:06,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1748383959] [2023-11-19 05:22:06,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:22:06,897 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 05:22:06,898 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c96ce3dc-0bcc-4cfb-aa7f-40fc806aeae9/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 05:22:06,901 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c96ce3dc-0bcc-4cfb-aa7f-40fc806aeae9/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 05:22:06,909 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c96ce3dc-0bcc-4cfb-aa7f-40fc806aeae9/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 05:22:07,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:22:07,257 INFO L262 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-19 05:22:07,271 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:22:07,332 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 94 proven. 0 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2023-11-19 05:22:07,333 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:22:07,334 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 05:22:07,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1748383959] [2023-11-19 05:22:07,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1748383959] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:22:07,336 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:22:07,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 05:22:07,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573556066] [2023-11-19 05:22:07,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:22:07,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 05:22:07,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 05:22:07,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 05:22:07,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 05:22:07,398 INFO L87 Difference]: Start difference. First operand has 43 states, 28 states have (on average 1.3214285714285714) internal successors, (37), 29 states have internal predecessors, (37), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) Second operand has 2 states, 2 states have (on average 12.5) internal successors, (25), 2 states have internal predecessors, (25), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-11-19 05:22:07,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:22:07,445 INFO L93 Difference]: Finished difference Result 83 states and 131 transitions. [2023-11-19 05:22:07,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 05:22:07,450 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 12.5) internal successors, (25), 2 states have internal predecessors, (25), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 78 [2023-11-19 05:22:07,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:22:07,460 INFO L225 Difference]: With dead ends: 83 [2023-11-19 05:22:07,460 INFO L226 Difference]: Without dead ends: 39 [2023-11-19 05:22:07,465 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 77 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 05:22:07,469 INFO L413 NwaCegarLoop]: 58 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, 58 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 05:22:07,471 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 05:22:07,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2023-11-19 05:22:07,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2023-11-19 05:22:07,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 25 states have (on average 1.2) internal successors, (30), 25 states have internal predecessors, (30), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-11-19 05:22:07,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 54 transitions. [2023-11-19 05:22:07,538 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 54 transitions. Word has length 78 [2023-11-19 05:22:07,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:22:07,539 INFO L495 AbstractCegarLoop]: Abstraction has 39 states and 54 transitions. [2023-11-19 05:22:07,539 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 12.5) internal successors, (25), 2 states have internal predecessors, (25), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-11-19 05:22:07,540 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 54 transitions. [2023-11-19 05:22:07,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-11-19 05:22:07,548 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:22:07,548 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 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 05:22:07,561 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c96ce3dc-0bcc-4cfb-aa7f-40fc806aeae9/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 05:22:07,761 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c96ce3dc-0bcc-4cfb-aa7f-40fc806aeae9/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 05:22:07,762 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:22:07,763 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:22:07,763 INFO L85 PathProgramCache]: Analyzing trace with hash 191820536, now seen corresponding path program 1 times [2023-11-19 05:22:07,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 05:22:07,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [257613870] [2023-11-19 05:22:07,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:22:07,767 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 05:22:07,767 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c96ce3dc-0bcc-4cfb-aa7f-40fc806aeae9/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 05:22:07,769 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c96ce3dc-0bcc-4cfb-aa7f-40fc806aeae9/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 05:22:07,770 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c96ce3dc-0bcc-4cfb-aa7f-40fc806aeae9/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 05:22:08,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:22:08,047 INFO L262 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-19 05:22:08,054 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:22:08,657 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 44 proven. 30 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2023-11-19 05:22:08,657 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 05:22:09,021 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 05:22:09,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [257613870] [2023-11-19 05:22:09,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [257613870] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 05:22:09,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1953301398] [2023-11-19 05:22:09,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:22:09,022 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-19 05:22:09,023 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c96ce3dc-0bcc-4cfb-aa7f-40fc806aeae9/bin/utaipan-verify-t7M7D8N6sZ/cvc4 [2023-11-19 05:22:09,058 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c96ce3dc-0bcc-4cfb-aa7f-40fc806aeae9/bin/utaipan-verify-t7M7D8N6sZ/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-19 05:22:09,071 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c96ce3dc-0bcc-4cfb-aa7f-40fc806aeae9/bin/utaipan-verify-t7M7D8N6sZ/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2023-11-19 05:22:09,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:22:09,851 INFO L262 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-19 05:22:09,875 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:22:10,282 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 11 proven. 33 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2023-11-19 05:22:10,282 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 05:22:10,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1953301398] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 05:22:10,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [703995453] [2023-11-19 05:22:10,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:22:10,553 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:22:10,553 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c96ce3dc-0bcc-4cfb-aa7f-40fc806aeae9/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:22:10,556 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c96ce3dc-0bcc-4cfb-aa7f-40fc806aeae9/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:22:10,559 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c96ce3dc-0bcc-4cfb-aa7f-40fc806aeae9/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-19 05:22:10,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:22:10,749 INFO L262 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-19 05:22:10,754 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:22:11,090 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 11 proven. 33 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2023-11-19 05:22:11,091 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 05:22:11,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [703995453] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 05:22:11,154 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 05:22:11,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 6, 6] total 12 [2023-11-19 05:22:11,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835892014] [2023-11-19 05:22:11,156 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 05:22:11,158 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-19 05:22:11,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 05:22:11,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-19 05:22:11,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=234, Unknown=0, NotChecked=0, Total=342 [2023-11-19 05:22:11,163 INFO L87 Difference]: Start difference. First operand 39 states and 54 transitions. Second operand has 12 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 11 states have internal predecessors, (31), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-19 05:22:12,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:22:12,884 INFO L93 Difference]: Finished difference Result 95 states and 126 transitions. [2023-11-19 05:22:12,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-19 05:22:12,887 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 11 states have internal predecessors, (31), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 78 [2023-11-19 05:22:12,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:22:12,889 INFO L225 Difference]: With dead ends: 95 [2023-11-19 05:22:12,890 INFO L226 Difference]: Without dead ends: 59 [2023-11-19 05:22:12,891 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 243 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=187, Invalid=413, Unknown=0, NotChecked=0, Total=600 [2023-11-19 05:22:12,893 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 112 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 216 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 129 SdHoareTripleChecker+Invalid, 231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 216 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-11-19 05:22:12,894 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 129 Invalid, 231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 216 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-11-19 05:22:12,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2023-11-19 05:22:12,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 43. [2023-11-19 05:22:12,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 28 states have (on average 1.1428571428571428) internal successors, (32), 28 states have internal predecessors, (32), 12 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-11-19 05:22:12,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 56 transitions. [2023-11-19 05:22:12,912 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 56 transitions. Word has length 78 [2023-11-19 05:22:12,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:22:12,914 INFO L495 AbstractCegarLoop]: Abstraction has 43 states and 56 transitions. [2023-11-19 05:22:12,914 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 11 states have internal predecessors, (31), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-19 05:22:12,915 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 56 transitions. [2023-11-19 05:22:12,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2023-11-19 05:22:12,917 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:22:12,917 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 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 05:22:12,930 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c96ce3dc-0bcc-4cfb-aa7f-40fc806aeae9/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)] Ended with exit code 0 [2023-11-19 05:22:13,129 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c96ce3dc-0bcc-4cfb-aa7f-40fc806aeae9/bin/utaipan-verify-t7M7D8N6sZ/cvc4 --incremental --print-success --lang smt (4)] Forceful destruction successful, exit code 0 [2023-11-19 05:22:13,347 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c96ce3dc-0bcc-4cfb-aa7f-40fc806aeae9/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-19 05:22:13,525 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c96ce3dc-0bcc-4cfb-aa7f-40fc806aeae9/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=3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c96ce3dc-0bcc-4cfb-aa7f-40fc806aeae9/bin/utaipan-verify-t7M7D8N6sZ/cvc4 --incremental --print-success --lang smt,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c96ce3dc-0bcc-4cfb-aa7f-40fc806aeae9/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:22:13,525 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:22:13,526 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:22:13,527 INFO L85 PathProgramCache]: Analyzing trace with hash 1415909004, now seen corresponding path program 1 times [2023-11-19 05:22:13,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 05:22:13,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1659713273] [2023-11-19 05:22:13,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:22:13,528 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 05:22:13,528 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c96ce3dc-0bcc-4cfb-aa7f-40fc806aeae9/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 05:22:13,530 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c96ce3dc-0bcc-4cfb-aa7f-40fc806aeae9/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 05:22:13,532 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c96ce3dc-0bcc-4cfb-aa7f-40fc806aeae9/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 (6)] Waiting until timeout for monitored process [2023-11-19 05:22:13,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:22:13,729 INFO L262 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-19 05:22:13,733 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:22:14,244 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 11 proven. 33 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2023-11-19 05:22:14,244 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 05:22:14,509 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 05:22:14,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1659713273] [2023-11-19 05:22:14,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1659713273] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 05:22:14,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1151937015] [2023-11-19 05:22:14,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:22:14,511 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-19 05:22:14,511 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c96ce3dc-0bcc-4cfb-aa7f-40fc806aeae9/bin/utaipan-verify-t7M7D8N6sZ/cvc4 [2023-11-19 05:22:14,512 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c96ce3dc-0bcc-4cfb-aa7f-40fc806aeae9/bin/utaipan-verify-t7M7D8N6sZ/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-19 05:22:14,515 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c96ce3dc-0bcc-4cfb-aa7f-40fc806aeae9/bin/utaipan-verify-t7M7D8N6sZ/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2023-11-19 05:22:15,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:22:15,206 INFO L262 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-19 05:22:15,210 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:22:15,596 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 11 proven. 33 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2023-11-19 05:22:15,596 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 05:22:15,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1151937015] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 05:22:15,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1500560700] [2023-11-19 05:22:15,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:22:15,705 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:22:15,705 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c96ce3dc-0bcc-4cfb-aa7f-40fc806aeae9/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:22:15,707 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c96ce3dc-0bcc-4cfb-aa7f-40fc806aeae9/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:22:15,710 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c96ce3dc-0bcc-4cfb-aa7f-40fc806aeae9/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-19 05:22:15,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:22:15,901 INFO L262 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-19 05:22:15,905 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:22:16,354 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 11 proven. 33 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2023-11-19 05:22:16,354 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 05:22:16,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1500560700] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 05:22:16,647 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 05:22:16,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 7] total 8 [2023-11-19 05:22:16,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329768513] [2023-11-19 05:22:16,648 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 05:22:16,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-19 05:22:16,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 05:22:16,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-19 05:22:16,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2023-11-19 05:22:16,650 INFO L87 Difference]: Start difference. First operand 43 states and 56 transitions. Second operand has 8 states, 8 states have (on average 3.625) internal successors, (29), 8 states have internal predecessors, (29), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 1 states have call predecessors, (12), 2 states have call successors, (12) [2023-11-19 05:22:18,338 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-19 05:22:20,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:22:20,085 INFO L93 Difference]: Finished difference Result 97 states and 124 transitions. [2023-11-19 05:22:20,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-19 05:22:20,088 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.625) internal successors, (29), 8 states have internal predecessors, (29), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 1 states have call predecessors, (12), 2 states have call successors, (12) Word has length 79 [2023-11-19 05:22:20,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:22:20,090 INFO L225 Difference]: With dead ends: 97 [2023-11-19 05:22:20,090 INFO L226 Difference]: Without dead ends: 57 [2023-11-19 05:22:20,092 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 269 GetRequests, 254 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2023-11-19 05:22:20,093 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 30 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2023-11-19 05:22:20,094 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 123 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2023-11-19 05:22:20,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2023-11-19 05:22:20,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 43. [2023-11-19 05:22:20,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 28 states have (on average 1.1071428571428572) internal successors, (31), 28 states have internal predecessors, (31), 12 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-11-19 05:22:20,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 55 transitions. [2023-11-19 05:22:20,105 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 55 transitions. Word has length 79 [2023-11-19 05:22:20,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:22:20,106 INFO L495 AbstractCegarLoop]: Abstraction has 43 states and 55 transitions. [2023-11-19 05:22:20,107 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.625) internal successors, (29), 8 states have internal predecessors, (29), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 1 states have call predecessors, (12), 2 states have call successors, (12) [2023-11-19 05:22:20,107 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 55 transitions. [2023-11-19 05:22:20,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2023-11-19 05:22:20,109 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:22:20,109 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 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 05:22:20,130 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c96ce3dc-0bcc-4cfb-aa7f-40fc806aeae9/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-19 05:22:20,318 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c96ce3dc-0bcc-4cfb-aa7f-40fc806aeae9/bin/utaipan-verify-t7M7D8N6sZ/cvc4 --incremental --print-success --lang smt (7)] Forceful destruction successful, exit code 0 [2023-11-19 05:22:20,523 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c96ce3dc-0bcc-4cfb-aa7f-40fc806aeae9/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 (6)] Forceful destruction successful, exit code 0 [2023-11-19 05:22:20,714 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c96ce3dc-0bcc-4cfb-aa7f-40fc806aeae9/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c96ce3dc-0bcc-4cfb-aa7f-40fc806aeae9/bin/utaipan-verify-t7M7D8N6sZ/cvc4 --incremental --print-success --lang smt,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c96ce3dc-0bcc-4cfb-aa7f-40fc806aeae9/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 05:22:20,715 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:22:20,715 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:22:20,715 INFO L85 PathProgramCache]: Analyzing trace with hash 1417756046, now seen corresponding path program 1 times [2023-11-19 05:22:20,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 05:22:20,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [532853510] [2023-11-19 05:22:20,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:22:20,716 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 05:22:20,717 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c96ce3dc-0bcc-4cfb-aa7f-40fc806aeae9/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 05:22:20,718 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c96ce3dc-0bcc-4cfb-aa7f-40fc806aeae9/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 05:22:20,722 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c96ce3dc-0bcc-4cfb-aa7f-40fc806aeae9/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 (9)] Waiting until timeout for monitored process [2023-11-19 05:22:20,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:22:20,904 INFO L262 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-19 05:22:20,908 INFO L285 TraceCheckSpWp]: Computing forward predicates...