./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-1loop_file-19.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_83beb456-677f-4964-94e8-cb97215e7fe2/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83beb456-677f-4964-94e8-cb97215e7fe2/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_83beb456-677f-4964-94e8-cb97215e7fe2/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83beb456-677f-4964-94e8-cb97215e7fe2/bin/utaipan-verify-t7M7D8N6sZ/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-1loop_file-19.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83beb456-677f-4964-94e8-cb97215e7fe2/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_83beb456-677f-4964-94e8-cb97215e7fe2/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 ce316eeb4b3641499c2394eeff325d13cd059837344f9d1e23ab187d3034f448 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 04:14:25,383 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 04:14:25,450 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83beb456-677f-4964-94e8-cb97215e7fe2/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-11-19 04:14:25,455 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 04:14:25,456 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 04:14:25,499 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 04:14:25,500 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 04:14:25,500 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 04:14:25,501 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 04:14:25,502 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 04:14:25,502 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 04:14:25,503 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 04:14:25,504 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 04:14:25,504 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-19 04:14:25,505 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 04:14:25,505 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 04:14:25,506 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-19 04:14:25,506 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-19 04:14:25,507 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 04:14:25,508 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-19 04:14:25,508 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-19 04:14:25,512 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-19 04:14:25,513 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 04:14:25,513 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 04:14:25,514 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 04:14:25,514 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 04:14:25,532 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 04:14:25,532 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 04:14:25,533 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 04:14:25,534 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 04:14:25,534 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 04:14:25,535 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 04:14:25,535 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 04:14:25,536 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 04:14:25,536 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 04:14:25,537 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 04:14:25,537 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 04:14:25,537 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 04:14:25,538 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 04:14:25,538 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 04:14:25,539 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-19 04:14:25,539 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 04:14:25,540 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 04:14:25,540 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 04:14:25,540 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 04:14:25,541 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_83beb456-677f-4964-94e8-cb97215e7fe2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83beb456-677f-4964-94e8-cb97215e7fe2/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ce316eeb4b3641499c2394eeff325d13cd059837344f9d1e23ab187d3034f448 [2023-11-19 04:14:25,784 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 04:14:25,818 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 04:14:25,821 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 04:14:25,823 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 04:14:25,824 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 04:14:25,826 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83beb456-677f-4964-94e8-cb97215e7fe2/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-1loop_file-19.i [2023-11-19 04:14:29,008 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 04:14:29,232 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 04:14:29,233 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83beb456-677f-4964-94e8-cb97215e7fe2/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-1loop_file-19.i [2023-11-19 04:14:29,248 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83beb456-677f-4964-94e8-cb97215e7fe2/bin/utaipan-verify-t7M7D8N6sZ/data/316924e5b/5e816ef4cc534395944234b756048137/FLAGe4496847f [2023-11-19 04:14:29,262 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83beb456-677f-4964-94e8-cb97215e7fe2/bin/utaipan-verify-t7M7D8N6sZ/data/316924e5b/5e816ef4cc534395944234b756048137 [2023-11-19 04:14:29,265 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 04:14:29,267 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 04:14:29,268 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 04:14:29,269 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 04:14:29,275 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 04:14:29,276 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:14:29" (1/1) ... [2023-11-19 04:14:29,277 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@38fc1619 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:14:29, skipping insertion in model container [2023-11-19 04:14:29,278 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:14:29" (1/1) ... [2023-11-19 04:14:29,324 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 04:14:29,490 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_83beb456-677f-4964-94e8-cb97215e7fe2/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-1loop_file-19.i[915,928] [2023-11-19 04:14:29,535 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:14:29,547 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 04:14:29,559 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_83beb456-677f-4964-94e8-cb97215e7fe2/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-1loop_file-19.i[915,928] [2023-11-19 04:14:29,584 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:14:29,602 INFO L206 MainTranslator]: Completed translation [2023-11-19 04:14:29,603 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:14:29 WrapperNode [2023-11-19 04:14:29,603 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 04:14:29,604 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 04:14:29,604 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 04:14:29,604 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 04:14:29,610 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:14:29" (1/1) ... [2023-11-19 04:14:29,621 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:14:29" (1/1) ... [2023-11-19 04:14:29,654 INFO L138 Inliner]: procedures = 26, calls = 30, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 128 [2023-11-19 04:14:29,655 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 04:14:29,656 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 04:14:29,656 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 04:14:29,656 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 04:14:29,666 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:14:29" (1/1) ... [2023-11-19 04:14:29,667 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:14:29" (1/1) ... [2023-11-19 04:14:29,673 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:14:29" (1/1) ... [2023-11-19 04:14:29,673 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:14:29" (1/1) ... [2023-11-19 04:14:29,681 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:14:29" (1/1) ... [2023-11-19 04:14:29,686 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:14:29" (1/1) ... [2023-11-19 04:14:29,688 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:14:29" (1/1) ... [2023-11-19 04:14:29,690 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:14:29" (1/1) ... [2023-11-19 04:14:29,693 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 04:14:29,694 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 04:14:29,695 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 04:14:29,695 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 04:14:29,696 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:14:29" (1/1) ... [2023-11-19 04:14:29,727 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 04:14:29,744 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83beb456-677f-4964-94e8-cb97215e7fe2/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:14:29,770 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83beb456-677f-4964-94e8-cb97215e7fe2/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 04:14:29,802 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83beb456-677f-4964-94e8-cb97215e7fe2/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 04:14:29,821 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 04:14:29,821 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-19 04:14:29,822 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-19 04:14:29,822 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 04:14:29,822 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 04:14:29,822 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 04:14:29,951 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 04:14:29,954 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 04:14:30,319 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 04:14:30,582 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 04:14:30,583 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-19 04:14:30,588 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:14:30 BoogieIcfgContainer [2023-11-19 04:14:30,588 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 04:14:30,590 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 04:14:30,590 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 04:14:30,594 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 04:14:30,595 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 04:14:29" (1/3) ... [2023-11-19 04:14:30,596 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c488c22 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:14:30, skipping insertion in model container [2023-11-19 04:14:30,596 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:14:29" (2/3) ... [2023-11-19 04:14:30,599 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c488c22 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:14:30, skipping insertion in model container [2023-11-19 04:14:30,600 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:14:30" (3/3) ... [2023-11-19 04:14:30,601 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_loopvsstraightlinecode_25-1loop_file-19.i [2023-11-19 04:14:30,622 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 04:14:30,622 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-19 04:14:30,704 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 04:14:30,713 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;@1fc1a282, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-19 04:14:30,713 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-19 04:14:30,718 INFO L276 IsEmpty]: Start isEmpty. Operand has 36 states, 16 states have (on average 1.1875) internal successors, (19), 17 states have internal predecessors, (19), 17 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2023-11-19 04:14:30,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-11-19 04:14:30,731 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:14:30,732 INFO L195 NwaCegarLoop]: trace histogram [17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:14:30,733 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 04:14:30,740 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:14:30,741 INFO L85 PathProgramCache]: Analyzing trace with hash -1944315619, now seen corresponding path program 1 times [2023-11-19 04:14:30,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:14:30,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869107263] [2023-11-19 04:14:30,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:14:30,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:14:31,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 04:14:31,237 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 04:14:31,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 04:14:31,430 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-11-19 04:14:31,432 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-19 04:14:31,433 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-19 04:14:31,435 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 04:14:31,440 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-11-19 04:14:31,448 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-19 04:14:31,551 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 04:14:31 BoogieIcfgContainer [2023-11-19 04:14:31,551 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-19 04:14:31,553 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-19 04:14:31,553 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-19 04:14:31,553 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-19 04:14:31,554 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:14:30" (3/4) ... [2023-11-19 04:14:31,560 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-19 04:14:31,561 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-19 04:14:31,562 INFO L158 Benchmark]: Toolchain (without parser) took 2295.60ms. Allocated memory is still 134.2MB. Free memory was 90.8MB in the beginning and 54.4MB in the end (delta: 36.3MB). Peak memory consumption was 35.5MB. Max. memory is 16.1GB. [2023-11-19 04:14:31,563 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 134.2MB. Free memory is still 102.7MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 04:14:31,564 INFO L158 Benchmark]: CACSL2BoogieTranslator took 334.66ms. Allocated memory is still 134.2MB. Free memory was 90.8MB in the beginning and 78.2MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-19 04:14:31,566 INFO L158 Benchmark]: Boogie Procedure Inliner took 51.40ms. Allocated memory is still 134.2MB. Free memory was 77.7MB in the beginning and 75.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 04:14:31,566 INFO L158 Benchmark]: Boogie Preprocessor took 38.06ms. Allocated memory is still 134.2MB. Free memory was 75.6MB in the beginning and 74.0MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 04:14:31,567 INFO L158 Benchmark]: RCFGBuilder took 893.33ms. Allocated memory is still 134.2MB. Free memory was 74.0MB in the beginning and 102.0MB in the end (delta: -28.0MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. [2023-11-19 04:14:31,567 INFO L158 Benchmark]: TraceAbstraction took 961.30ms. Allocated memory is still 134.2MB. Free memory was 101.9MB in the beginning and 55.1MB in the end (delta: 46.8MB). Peak memory consumption was 48.2MB. Max. memory is 16.1GB. [2023-11-19 04:14:31,568 INFO L158 Benchmark]: Witness Printer took 8.52ms. Allocated memory is still 134.2MB. Free memory was 55.1MB in the beginning and 54.4MB in the end (delta: 649.8kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 04:14:31,571 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 134.2MB. Free memory is still 102.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 334.66ms. Allocated memory is still 134.2MB. Free memory was 90.8MB in the beginning and 78.2MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 51.40ms. Allocated memory is still 134.2MB. Free memory was 77.7MB in the beginning and 75.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 38.06ms. Allocated memory is still 134.2MB. Free memory was 75.6MB in the beginning and 74.0MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 893.33ms. Allocated memory is still 134.2MB. Free memory was 74.0MB in the beginning and 102.0MB in the end (delta: -28.0MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. * TraceAbstraction took 961.30ms. Allocated memory is still 134.2MB. Free memory was 101.9MB in the beginning and 55.1MB in the end (delta: 46.8MB). Peak memory consumption was 48.2MB. Max. memory is 16.1GB. * Witness Printer took 8.52ms. Allocated memory is still 134.2MB. Free memory was 55.1MB in the beginning and 54.4MB in the end (delta: 649.8kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 19]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 97, overapproximation of shiftLeft at line 56, overapproximation of someBinaryArithmeticFLOAToperation at line 50. Possible FailurePath: [L21] unsigned char isInitial = 0; [L22] signed char var_1_1 = 8; [L23] unsigned char var_1_2 = 128; [L24] unsigned char var_1_3 = 64; [L25] unsigned long int var_1_4 = 1; [L26] unsigned long int var_1_5 = 5; [L27] signed char var_1_7 = 4; [L28] signed char var_1_8 = 100; [L29] unsigned char var_1_9 = 1; [L30] signed long int var_1_10 = -8; [L31] float var_1_11 = 255.2; [L32] float var_1_12 = 128.25; [L33] float var_1_13 = 100.5; [L34] float var_1_14 = 255.9; [L35] signed long int var_1_15 = -128; [L36] unsigned short int var_1_16 = 2; [L37] signed long int last_1_var_1_10 = -8; [L101] isInitial = 1 [L102] FCALL initially() [L103] int k_loop; [L104] k_loop = 0 VAL [isInitial=1, k_loop=0, last_1_var_1_10=-8, var_1_10=-8, var_1_11=1276/5, var_1_12=513/4, var_1_13=201/2, var_1_14=2559/10, var_1_15=-128, var_1_16=2, var_1_1=8, var_1_2=128, var_1_3=64, var_1_4=1, var_1_5=5, var_1_7=4, var_1_8=100, var_1_9=1] [L104] COND TRUE k_loop < 1 [L105] CALL updateLastVariables() [L94] last_1_var_1_10 = var_1_10 [L105] RET updateLastVariables() [L106] CALL updateVariables() [L65] var_1_2 = __VERIFIER_nondet_uchar() [L66] CALL assume_abort_if_not(var_1_2 >= 127) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=-8, var_1_10=-8, var_1_11=1276/5, var_1_12=513/4, var_1_13=201/2, var_1_14=2559/10, var_1_15=-128, var_1_16=2, var_1_1=8, var_1_2=127, var_1_3=64, var_1_4=1, var_1_5=5, var_1_7=4, var_1_8=100, var_1_9=1] [L20] COND FALSE !(!cond) [L66] RET assume_abort_if_not(var_1_2 >= 127) VAL [isInitial=1, last_1_var_1_10=-8, var_1_10=-8, var_1_11=1276/5, var_1_12=513/4, var_1_13=201/2, var_1_14=2559/10, var_1_15=-128, var_1_16=2, var_1_1=8, var_1_2=127, var_1_3=64, var_1_4=1, var_1_5=5, var_1_7=4, var_1_8=100, var_1_9=1] [L67] CALL assume_abort_if_not(var_1_2 <= 255) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=-8, var_1_10=-8, var_1_11=1276/5, var_1_12=513/4, var_1_13=201/2, var_1_14=2559/10, var_1_15=-128, var_1_16=2, var_1_1=8, var_1_2=127, var_1_3=64, var_1_4=1, var_1_5=5, var_1_7=4, var_1_8=100, var_1_9=1] [L20] COND FALSE !(!cond) [L67] RET assume_abort_if_not(var_1_2 <= 255) VAL [isInitial=1, last_1_var_1_10=-8, var_1_10=-8, var_1_11=1276/5, var_1_12=513/4, var_1_13=201/2, var_1_14=2559/10, var_1_15=-128, var_1_16=2, var_1_1=8, var_1_2=127, var_1_3=64, var_1_4=1, var_1_5=5, var_1_7=4, var_1_8=100, var_1_9=1] [L68] var_1_3 = __VERIFIER_nondet_uchar() [L69] CALL assume_abort_if_not(var_1_3 >= 0) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=-8, var_1_10=-8, var_1_11=1276/5, var_1_12=513/4, var_1_13=201/2, var_1_14=2559/10, var_1_15=-128, var_1_16=2, var_1_1=8, var_1_2=127, var_1_3=127, var_1_4=1, var_1_5=5, var_1_7=4, var_1_8=100, var_1_9=1] [L20] COND FALSE !(!cond) [L69] RET assume_abort_if_not(var_1_3 >= 0) VAL [isInitial=1, last_1_var_1_10=-8, var_1_10=-8, var_1_11=1276/5, var_1_12=513/4, var_1_13=201/2, var_1_14=2559/10, var_1_15=-128, var_1_16=2, var_1_1=8, var_1_2=127, var_1_3=127, var_1_4=1, var_1_5=5, var_1_7=4, var_1_8=100, var_1_9=1] [L70] CALL assume_abort_if_not(var_1_3 <= 127) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=-8, var_1_10=-8, var_1_11=1276/5, var_1_12=513/4, var_1_13=201/2, var_1_14=2559/10, var_1_15=-128, var_1_16=2, var_1_1=8, var_1_2=127, var_1_3=127, var_1_4=1, var_1_5=5, var_1_7=4, var_1_8=100, var_1_9=1] [L20] COND FALSE !(!cond) [L70] RET assume_abort_if_not(var_1_3 <= 127) VAL [isInitial=1, last_1_var_1_10=-8, var_1_10=-8, var_1_11=1276/5, var_1_12=513/4, var_1_13=201/2, var_1_14=2559/10, var_1_15=-128, var_1_16=2, var_1_1=8, var_1_2=127, var_1_3=127, var_1_4=1, var_1_5=5, var_1_7=4, var_1_8=100, var_1_9=1] [L71] var_1_4 = __VERIFIER_nondet_ulong() [L72] CALL assume_abort_if_not(var_1_4 >= 0) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=-8, var_1_10=-8, var_1_11=1276/5, var_1_12=513/4, var_1_13=201/2, var_1_14=2559/10, var_1_15=-128, var_1_16=2, var_1_1=8, var_1_2=127, var_1_3=127, var_1_4=8, var_1_5=5, var_1_7=4, var_1_8=100, var_1_9=1] [L20] COND FALSE !(!cond) [L72] RET assume_abort_if_not(var_1_4 >= 0) VAL [isInitial=1, last_1_var_1_10=-8, var_1_10=-8, var_1_11=1276/5, var_1_12=513/4, var_1_13=201/2, var_1_14=2559/10, var_1_15=-128, var_1_16=2, var_1_1=8, var_1_2=127, var_1_3=127, var_1_4=8, var_1_5=5, var_1_7=4, var_1_8=100, var_1_9=1] [L73] CALL assume_abort_if_not(var_1_4 <= 12) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=-8, var_1_10=-8, var_1_11=1276/5, var_1_12=513/4, var_1_13=201/2, var_1_14=2559/10, var_1_15=-128, var_1_16=2, var_1_1=8, var_1_2=127, var_1_3=127, var_1_4=8, var_1_5=5, var_1_7=4, var_1_8=100, var_1_9=1] [L20] COND FALSE !(!cond) [L73] RET assume_abort_if_not(var_1_4 <= 12) VAL [isInitial=1, last_1_var_1_10=-8, var_1_10=-8, var_1_11=1276/5, var_1_12=513/4, var_1_13=201/2, var_1_14=2559/10, var_1_15=-128, var_1_16=2, var_1_1=8, var_1_2=127, var_1_3=127, var_1_4=8, var_1_5=5, var_1_7=4, var_1_8=100, var_1_9=1] [L74] var_1_5 = __VERIFIER_nondet_ulong() [L75] CALL assume_abort_if_not(var_1_5 >= 0) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=-8, var_1_10=-8, var_1_11=1276/5, var_1_12=513/4, var_1_13=201/2, var_1_14=2559/10, var_1_15=-128, var_1_16=2, var_1_1=8, var_1_2=127, var_1_3=127, var_1_4=8, var_1_5=11, var_1_7=4, var_1_8=100, var_1_9=1] [L20] COND FALSE !(!cond) [L75] RET assume_abort_if_not(var_1_5 >= 0) VAL [isInitial=1, last_1_var_1_10=-8, var_1_10=-8, var_1_11=1276/5, var_1_12=513/4, var_1_13=201/2, var_1_14=2559/10, var_1_15=-128, var_1_16=2, var_1_1=8, var_1_2=127, var_1_3=127, var_1_4=8, var_1_5=11, var_1_7=4, var_1_8=100, var_1_9=1] [L76] CALL assume_abort_if_not(var_1_5 <= 11) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=-8, var_1_10=-8, var_1_11=1276/5, var_1_12=513/4, var_1_13=201/2, var_1_14=2559/10, var_1_15=-128, var_1_16=2, var_1_1=8, var_1_2=127, var_1_3=127, var_1_4=8, var_1_5=11, var_1_7=4, var_1_8=100, var_1_9=1] [L20] COND FALSE !(!cond) [L76] RET assume_abort_if_not(var_1_5 <= 11) VAL [isInitial=1, last_1_var_1_10=-8, var_1_10=-8, var_1_11=1276/5, var_1_12=513/4, var_1_13=201/2, var_1_14=2559/10, var_1_15=-128, var_1_16=2, var_1_1=8, var_1_2=127, var_1_3=127, var_1_4=8, var_1_5=11, var_1_7=4, var_1_8=100, var_1_9=1] [L77] var_1_7 = __VERIFIER_nondet_char() [L78] CALL assume_abort_if_not(var_1_7 >= -63) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=-8, var_1_10=-8, var_1_11=1276/5, var_1_12=513/4, var_1_13=201/2, var_1_14=2559/10, var_1_15=-128, var_1_16=2, var_1_1=8, var_1_2=127, var_1_3=127, var_1_4=8, var_1_5=11, var_1_7=-63, var_1_8=100, var_1_9=1] [L20] COND FALSE !(!cond) [L78] RET assume_abort_if_not(var_1_7 >= -63) VAL [isInitial=1, last_1_var_1_10=-8, var_1_10=-8, var_1_11=1276/5, var_1_12=513/4, var_1_13=201/2, var_1_14=2559/10, var_1_15=-128, var_1_16=2, var_1_1=8, var_1_2=127, var_1_3=127, var_1_4=8, var_1_5=11, var_1_7=-63, var_1_8=100, var_1_9=1] [L79] CALL assume_abort_if_not(var_1_7 <= 63) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=-8, var_1_10=-8, var_1_11=1276/5, var_1_12=513/4, var_1_13=201/2, var_1_14=2559/10, var_1_15=-128, var_1_16=2, var_1_1=8, var_1_2=127, var_1_3=127, var_1_4=8, var_1_5=11, var_1_7=-63, var_1_8=100, var_1_9=1] [L20] COND FALSE !(!cond) [L79] RET assume_abort_if_not(var_1_7 <= 63) VAL [isInitial=1, last_1_var_1_10=-8, var_1_10=-8, var_1_11=1276/5, var_1_12=513/4, var_1_13=201/2, var_1_14=2559/10, var_1_15=-128, var_1_16=2, var_1_1=8, var_1_2=127, var_1_3=127, var_1_4=8, var_1_5=11, var_1_7=-63, var_1_8=100, var_1_9=1] [L80] var_1_8 = __VERIFIER_nondet_char() [L81] CALL assume_abort_if_not(var_1_8 >= 0) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=-8, var_1_10=-8, var_1_11=1276/5, var_1_12=513/4, var_1_13=201/2, var_1_14=2559/10, var_1_15=-128, var_1_16=2, var_1_1=8, var_1_2=127, var_1_3=127, var_1_4=8, var_1_5=11, var_1_7=-63, var_1_8=7, var_1_9=1] [L20] COND FALSE !(!cond) [L81] RET assume_abort_if_not(var_1_8 >= 0) VAL [isInitial=1, last_1_var_1_10=-8, var_1_10=-8, var_1_11=1276/5, var_1_12=513/4, var_1_13=201/2, var_1_14=2559/10, var_1_15=-128, var_1_16=2, var_1_1=8, var_1_2=127, var_1_3=127, var_1_4=8, var_1_5=11, var_1_7=-63, var_1_8=7, var_1_9=1] [L82] CALL assume_abort_if_not(var_1_8 <= 126) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=-8, var_1_10=-8, var_1_11=1276/5, var_1_12=513/4, var_1_13=201/2, var_1_14=2559/10, var_1_15=-128, var_1_16=2, var_1_1=8, var_1_2=127, var_1_3=127, var_1_4=8, var_1_5=11, var_1_7=-63, var_1_8=7, var_1_9=1] [L20] COND FALSE !(!cond) [L82] RET assume_abort_if_not(var_1_8 <= 126) VAL [isInitial=1, last_1_var_1_10=-8, var_1_10=-8, var_1_11=1276/5, var_1_12=513/4, var_1_13=201/2, var_1_14=2559/10, var_1_15=-128, var_1_16=2, var_1_1=8, var_1_2=127, var_1_3=127, var_1_4=8, var_1_5=11, var_1_7=-63, var_1_8=7, var_1_9=1] [L83] var_1_9 = __VERIFIER_nondet_uchar() [L84] CALL assume_abort_if_not(var_1_9 >= 0) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=-8, var_1_10=-8, var_1_11=1276/5, var_1_12=513/4, var_1_13=201/2, var_1_14=2559/10, var_1_15=-128, var_1_16=2, var_1_1=8, var_1_2=127, var_1_3=127, var_1_4=8, var_1_5=11, var_1_7=-63, var_1_8=7, var_1_9=1] [L20] COND FALSE !(!cond) [L84] RET assume_abort_if_not(var_1_9 >= 0) VAL [isInitial=1, last_1_var_1_10=-8, var_1_10=-8, var_1_11=1276/5, var_1_12=513/4, var_1_13=201/2, var_1_14=2559/10, var_1_15=-128, var_1_16=2, var_1_1=8, var_1_2=127, var_1_3=127, var_1_4=8, var_1_5=11, var_1_7=-63, var_1_8=7, var_1_9=1] [L85] CALL assume_abort_if_not(var_1_9 <= 1) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=-8, var_1_10=-8, var_1_11=1276/5, var_1_12=513/4, var_1_13=201/2, var_1_14=2559/10, var_1_15=-128, var_1_16=2, var_1_1=8, var_1_2=127, var_1_3=127, var_1_4=8, var_1_5=11, var_1_7=-63, var_1_8=7, var_1_9=1] [L20] COND FALSE !(!cond) [L85] RET assume_abort_if_not(var_1_9 <= 1) VAL [isInitial=1, last_1_var_1_10=-8, var_1_10=-8, var_1_11=1276/5, var_1_12=513/4, var_1_13=201/2, var_1_14=2559/10, var_1_15=-128, var_1_16=2, var_1_1=8, var_1_2=127, var_1_3=127, var_1_4=8, var_1_5=11, var_1_7=-63, var_1_8=7, var_1_9=1] [L86] var_1_12 = __VERIFIER_nondet_float() [L87] CALL assume_abort_if_not((var_1_12 >= -461168.6018427382800e+13F && var_1_12 <= -1.0e-20F) || (var_1_12 <= 4611686.018427382800e+12F && var_1_12 >= 1.0e-20F )) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=-8, var_1_10=-8, var_1_11=1276/5, var_1_12=388, var_1_13=201/2, var_1_14=2559/10, var_1_15=-128, var_1_16=2, var_1_1=8, var_1_2=127, var_1_3=127, var_1_4=8, var_1_5=11, var_1_7=-63, var_1_8=7, var_1_9=1] [L20] COND FALSE !(!cond) [L87] RET assume_abort_if_not((var_1_12 >= -461168.6018427382800e+13F && var_1_12 <= -1.0e-20F) || (var_1_12 <= 4611686.018427382800e+12F && var_1_12 >= 1.0e-20F )) VAL [isInitial=1, last_1_var_1_10=-8, var_1_10=-8, var_1_11=1276/5, var_1_12=388, var_1_13=201/2, var_1_14=2559/10, var_1_15=-128, var_1_16=2, var_1_1=8, var_1_2=127, var_1_3=127, var_1_4=8, var_1_5=11, var_1_7=-63, var_1_8=7, var_1_9=1] [L88] var_1_13 = __VERIFIER_nondet_float() [L89] CALL assume_abort_if_not((var_1_13 >= -230584.3009213691390e+13F && var_1_13 <= -1.0e-20F) || (var_1_13 <= 2305843.009213691390e+12F && var_1_13 >= 1.0e-20F )) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=-8, var_1_10=-8, var_1_11=1276/5, var_1_12=388, var_1_13=390, var_1_14=2559/10, var_1_15=-128, var_1_16=2, var_1_1=8, var_1_2=127, var_1_3=127, var_1_4=8, var_1_5=11, var_1_7=-63, var_1_8=7, var_1_9=1] [L20] COND FALSE !(!cond) [L89] RET assume_abort_if_not((var_1_13 >= -230584.3009213691390e+13F && var_1_13 <= -1.0e-20F) || (var_1_13 <= 2305843.009213691390e+12F && var_1_13 >= 1.0e-20F )) VAL [isInitial=1, last_1_var_1_10=-8, var_1_10=-8, var_1_11=1276/5, var_1_12=388, var_1_13=390, var_1_14=2559/10, var_1_15=-128, var_1_16=2, var_1_1=8, var_1_2=127, var_1_3=127, var_1_4=8, var_1_5=11, var_1_7=-63, var_1_8=7, var_1_9=1] [L90] var_1_14 = __VERIFIER_nondet_float() [L91] CALL assume_abort_if_not((var_1_14 >= -230584.3009213691390e+13F && var_1_14 <= -1.0e-20F) || (var_1_14 <= 2305843.009213691390e+12F && var_1_14 >= 1.0e-20F )) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=-8, var_1_10=-8, var_1_11=1276/5, var_1_12=388, var_1_13=390, var_1_14=389, var_1_15=-128, var_1_16=2, var_1_1=8, var_1_2=127, var_1_3=127, var_1_4=8, var_1_5=11, var_1_7=-63, var_1_8=7, var_1_9=1] [L20] COND FALSE !(!cond) [L91] RET assume_abort_if_not((var_1_14 >= -230584.3009213691390e+13F && var_1_14 <= -1.0e-20F) || (var_1_14 <= 2305843.009213691390e+12F && var_1_14 >= 1.0e-20F )) VAL [isInitial=1, last_1_var_1_10=-8, var_1_10=-8, var_1_11=1276/5, var_1_12=388, var_1_13=390, var_1_14=389, var_1_15=-128, var_1_16=2, var_1_1=8, var_1_2=127, var_1_3=127, var_1_4=8, var_1_5=11, var_1_7=-63, var_1_8=7, var_1_9=1] [L106] RET updateVariables() [L107] CALL step() [L41] COND TRUE var_1_7 < var_1_3 [L42] COND TRUE last_1_var_1_10 > var_1_7 [L43] var_1_10 = (var_1_3 - var_1_8) [L50] var_1_11 = (var_1_12 + (var_1_13 + var_1_14)) [L51] var_1_16 = 64 [L52] COND TRUE \read(var_1_9) [L53] var_1_15 = (var_1_7 + var_1_16) [L55] signed long int stepLocal_0 = var_1_15; [L56] EXPR (var_1_2 - var_1_3) << (var_1_4 + var_1_5) [L56] COND TRUE ((var_1_2 - var_1_3) << (var_1_4 + var_1_5)) <= stepLocal_0 [L57] var_1_1 = ((((var_1_4) > (((((var_1_8) < 0 ) ? -(var_1_8) : (var_1_8))))) ? (var_1_4) : (((((var_1_8) < 0 ) ? -(var_1_8) : (var_1_8)))))) [L107] RET step() [L108] CALL, EXPR property() [L97] EXPR (var_1_2 - var_1_3) << (var_1_4 + var_1_5) [L97-L98] return (((((((var_1_2 - var_1_3) << (var_1_4 + var_1_5)) <= var_1_15) ? (var_1_1 == ((signed char) ((((var_1_4) > (((((var_1_8) < 0 ) ? -(var_1_8) : (var_1_8))))) ? (var_1_4) : (((((var_1_8) < 0 ) ? -(var_1_8) : (var_1_8)))))))) : (var_1_9 ? (var_1_1 == ((signed char) var_1_5)) : 1)) && ((var_1_7 < var_1_3) ? ((last_1_var_1_10 > var_1_7) ? (var_1_10 == ((signed long int) (var_1_3 - var_1_8))) : 1) : (var_1_9 ? (var_1_10 == ((signed long int) var_1_5)) : 1))) && (var_1_11 == ((float) (var_1_12 + (var_1_13 + var_1_14))))) && (var_1_9 ? (var_1_15 == ((signed long int) (var_1_7 + var_1_16))) : 1)) && (var_1_16 == ((unsigned short int) 64)) ; [L108] RET, EXPR property() [L108] CALL __VERIFIER_assert(property()) [L19] COND TRUE !(cond) VAL [\old(cond)=0, cond=0, isInitial=1, last_1_var_1_10=-8, var_1_10=120, var_1_12=388, var_1_13=390, var_1_14=389, var_1_15=1, var_1_16=64, var_1_1=8, var_1_2=127, var_1_3=127, var_1_4=8, var_1_5=11, var_1_7=-63, var_1_8=7, var_1_9=1] [L19] reach_error() VAL [\old(cond)=0, cond=0, isInitial=1, last_1_var_1_10=-8, var_1_10=120, var_1_12=388, var_1_13=390, var_1_14=389, var_1_15=1, var_1_16=64, var_1_1=8, var_1_2=127, var_1_3=127, var_1_4=8, var_1_5=11, var_1_7=-63, var_1_8=7, var_1_9=1] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 36 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.8s, OverallIterations: 1, TraceHistogramMax: 17, 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=36occurred 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, 0.4s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 65 NumberOfCodeBlocks, 65 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2023-11-19 04:14:31,628 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83beb456-677f-4964-94e8-cb97215e7fe2/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_83beb456-677f-4964-94e8-cb97215e7fe2/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83beb456-677f-4964-94e8-cb97215e7fe2/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_83beb456-677f-4964-94e8-cb97215e7fe2/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83beb456-677f-4964-94e8-cb97215e7fe2/bin/utaipan-verify-t7M7D8N6sZ/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-1loop_file-19.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83beb456-677f-4964-94e8-cb97215e7fe2/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_83beb456-677f-4964-94e8-cb97215e7fe2/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 ce316eeb4b3641499c2394eeff325d13cd059837344f9d1e23ab187d3034f448 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 04:14:34,298 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 04:14:34,437 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83beb456-677f-4964-94e8-cb97215e7fe2/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2023-11-19 04:14:34,445 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 04:14:34,446 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 04:14:34,483 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 04:14:34,484 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 04:14:34,484 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 04:14:34,485 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 04:14:34,490 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 04:14:34,491 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 04:14:34,491 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 04:14:34,492 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 04:14:34,493 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 04:14:34,494 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 04:14:34,494 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 04:14:34,496 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 04:14:34,496 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 04:14:34,496 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 04:14:34,497 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 04:14:34,497 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 04:14:34,498 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 04:14:34,498 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 04:14:34,499 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 04:14:34,499 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-19 04:14:34,499 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-19 04:14:34,500 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-19 04:14:34,500 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 04:14:34,501 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 04:14:34,501 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 04:14:34,503 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 04:14:34,503 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 04:14:34,504 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 04:14:34,504 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 04:14:34,504 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 04:14:34,505 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 04:14:34,505 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 04:14:34,505 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-11-19 04:14:34,505 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-19 04:14:34,506 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 04:14:34,507 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 04:14:34,507 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 04:14:34,508 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_83beb456-677f-4964-94e8-cb97215e7fe2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83beb456-677f-4964-94e8-cb97215e7fe2/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ce316eeb4b3641499c2394eeff325d13cd059837344f9d1e23ab187d3034f448 [2023-11-19 04:14:34,947 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 04:14:34,980 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 04:14:34,983 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 04:14:34,984 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 04:14:34,985 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 04:14:34,986 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83beb456-677f-4964-94e8-cb97215e7fe2/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-1loop_file-19.i [2023-11-19 04:14:38,296 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 04:14:38,576 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 04:14:38,578 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83beb456-677f-4964-94e8-cb97215e7fe2/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-1loop_file-19.i [2023-11-19 04:14:38,596 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83beb456-677f-4964-94e8-cb97215e7fe2/bin/utaipan-verify-t7M7D8N6sZ/data/b233ae76b/5edeee92a2204cb1946c77bf8b4546c5/FLAG95228fbe0 [2023-11-19 04:14:38,617 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83beb456-677f-4964-94e8-cb97215e7fe2/bin/utaipan-verify-t7M7D8N6sZ/data/b233ae76b/5edeee92a2204cb1946c77bf8b4546c5 [2023-11-19 04:14:38,623 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 04:14:38,624 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 04:14:38,625 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 04:14:38,625 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 04:14:38,631 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 04:14:38,632 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:14:38" (1/1) ... [2023-11-19 04:14:38,633 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36a547c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:14:38, skipping insertion in model container [2023-11-19 04:14:38,634 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:14:38" (1/1) ... [2023-11-19 04:14:38,677 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 04:14:38,878 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_83beb456-677f-4964-94e8-cb97215e7fe2/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-1loop_file-19.i[915,928] [2023-11-19 04:14:38,961 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:14:38,987 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 04:14:39,006 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_83beb456-677f-4964-94e8-cb97215e7fe2/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-1loop_file-19.i[915,928] [2023-11-19 04:14:39,049 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:14:39,076 INFO L206 MainTranslator]: Completed translation [2023-11-19 04:14:39,077 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:14:39 WrapperNode [2023-11-19 04:14:39,077 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 04:14:39,078 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 04:14:39,079 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 04:14:39,079 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 04:14:39,087 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:14:39" (1/1) ... [2023-11-19 04:14:39,116 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:14:39" (1/1) ... [2023-11-19 04:14:39,164 INFO L138 Inliner]: procedures = 27, calls = 30, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 117 [2023-11-19 04:14:39,165 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 04:14:39,166 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 04:14:39,166 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 04:14:39,166 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 04:14:39,180 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:14:39" (1/1) ... [2023-11-19 04:14:39,181 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:14:39" (1/1) ... [2023-11-19 04:14:39,200 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:14:39" (1/1) ... [2023-11-19 04:14:39,200 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:14:39" (1/1) ... [2023-11-19 04:14:39,209 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:14:39" (1/1) ... [2023-11-19 04:14:39,229 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:14:39" (1/1) ... [2023-11-19 04:14:39,232 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:14:39" (1/1) ... [2023-11-19 04:14:39,234 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:14:39" (1/1) ... [2023-11-19 04:14:39,238 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 04:14:39,239 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 04:14:39,239 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 04:14:39,239 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 04:14:39,240 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:14:39" (1/1) ... [2023-11-19 04:14:39,252 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 04:14:39,283 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83beb456-677f-4964-94e8-cb97215e7fe2/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:14:39,297 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83beb456-677f-4964-94e8-cb97215e7fe2/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 04:14:39,329 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83beb456-677f-4964-94e8-cb97215e7fe2/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 04:14:39,342 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 04:14:39,342 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-19 04:14:39,342 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-19 04:14:39,342 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-19 04:14:39,343 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 04:14:39,343 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 04:14:39,484 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 04:14:39,488 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 04:14:40,209 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 04:14:40,218 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 04:14:40,218 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-19 04:14:40,224 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:14:40 BoogieIcfgContainer [2023-11-19 04:14:40,224 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 04:14:40,229 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 04:14:40,229 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 04:14:40,233 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 04:14:40,233 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 04:14:38" (1/3) ... [2023-11-19 04:14:40,234 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5643a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:14:40, skipping insertion in model container [2023-11-19 04:14:40,234 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:14:39" (2/3) ... [2023-11-19 04:14:40,235 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5643a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:14:40, skipping insertion in model container [2023-11-19 04:14:40,235 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:14:40" (3/3) ... [2023-11-19 04:14:40,236 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_loopvsstraightlinecode_25-1loop_file-19.i [2023-11-19 04:14:40,256 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 04:14:40,256 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-19 04:14:40,322 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 04:14:40,329 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;@17c49a1b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-19 04:14:40,330 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-19 04:14:40,337 INFO L276 IsEmpty]: Start isEmpty. Operand has 55 states, 35 states have (on average 1.3142857142857143) internal successors, (46), 36 states have internal predecessors, (46), 17 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2023-11-19 04:14:40,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2023-11-19 04:14:40,354 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:14:40,355 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:14:40,356 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 04:14:40,363 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:14:40,363 INFO L85 PathProgramCache]: Analyzing trace with hash 1620081931, now seen corresponding path program 1 times [2023-11-19 04:14:40,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 04:14:40,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2045474475] [2023-11-19 04:14:40,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:14:40,384 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 04:14:40,384 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83beb456-677f-4964-94e8-cb97215e7fe2/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 04:14:40,387 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83beb456-677f-4964-94e8-cb97215e7fe2/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-19 04:14:40,413 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83beb456-677f-4964-94e8-cb97215e7fe2/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-11-19 04:14:40,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:14:40,663 INFO L262 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-19 04:14:40,679 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:14:40,729 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 284 proven. 0 refuted. 0 times theorem prover too weak. 260 trivial. 0 not checked. [2023-11-19 04:14:40,729 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 04:14:40,730 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 04:14:40,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2045474475] [2023-11-19 04:14:40,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2045474475] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:14:40,731 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:14:40,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 04:14:40,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95354116] [2023-11-19 04:14:40,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:14:40,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 04:14:40,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 04:14:40,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 04:14:40,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 04:14:40,792 INFO L87 Difference]: Start difference. First operand has 55 states, 35 states have (on average 1.3142857142857143) internal successors, (46), 36 states have internal predecessors, (46), 17 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) Second operand has 2 states, 2 states have (on average 16.0) internal successors, (32), 2 states have internal predecessors, (32), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-11-19 04:14:40,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:14:40,836 INFO L93 Difference]: Finished difference Result 107 states and 174 transitions. [2023-11-19 04:14:40,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 04:14:40,838 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 16.0) internal successors, (32), 2 states have internal predecessors, (32), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 110 [2023-11-19 04:14:40,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:14:40,844 INFO L225 Difference]: With dead ends: 107 [2023-11-19 04:14:40,844 INFO L226 Difference]: Without dead ends: 51 [2023-11-19 04:14:40,847 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 109 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 04:14:40,851 INFO L413 NwaCegarLoop]: 77 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, 77 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 04:14:40,852 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 04:14:40,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2023-11-19 04:14:40,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2023-11-19 04:14:40,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 32 states have (on average 1.21875) internal successors, (39), 32 states have internal predecessors, (39), 17 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2023-11-19 04:14:40,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 73 transitions. [2023-11-19 04:14:40,895 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 73 transitions. Word has length 110 [2023-11-19 04:14:40,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:14:40,896 INFO L495 AbstractCegarLoop]: Abstraction has 51 states and 73 transitions. [2023-11-19 04:14:40,896 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 16.0) internal successors, (32), 2 states have internal predecessors, (32), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-11-19 04:14:40,896 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 73 transitions. [2023-11-19 04:14:40,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2023-11-19 04:14:40,900 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:14:40,900 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:14:40,914 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83beb456-677f-4964-94e8-cb97215e7fe2/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 04:14:41,113 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83beb456-677f-4964-94e8-cb97215e7fe2/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 04:14:41,114 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 04:14:41,115 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:14:41,115 INFO L85 PathProgramCache]: Analyzing trace with hash 93630981, now seen corresponding path program 1 times [2023-11-19 04:14:41,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 04:14:41,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1625631489] [2023-11-19 04:14:41,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:14:41,117 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 04:14:41,117 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83beb456-677f-4964-94e8-cb97215e7fe2/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 04:14:41,119 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83beb456-677f-4964-94e8-cb97215e7fe2/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-19 04:14:41,120 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83beb456-677f-4964-94e8-cb97215e7fe2/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 04:14:41,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:14:41,442 INFO L262 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 04:14:41,448 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:14:41,483 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-11-19 04:14:41,484 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 04:14:41,484 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 04:14:41,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1625631489] [2023-11-19 04:14:41,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1625631489] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:14:41,485 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:14:41,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 04:14:41,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627571777] [2023-11-19 04:14:41,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:14:41,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 04:14:41,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 04:14:41,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 04:14:41,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:14:41,489 INFO L87 Difference]: Start difference. First operand 51 states and 73 transitions. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-11-19 04:14:41,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:14:41,901 INFO L93 Difference]: Finished difference Result 135 states and 193 transitions. [2023-11-19 04:14:41,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 04:14:41,904 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 110 [2023-11-19 04:14:41,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:14:41,906 INFO L225 Difference]: With dead ends: 135 [2023-11-19 04:14:41,906 INFO L226 Difference]: Without dead ends: 87 [2023-11-19 04:14:41,907 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:14:41,909 INFO L413 NwaCegarLoop]: 70 mSDtfsCounter, 48 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-19 04:14:41,910 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 130 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-19 04:14:41,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2023-11-19 04:14:41,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 84. [2023-11-19 04:14:41,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 52 states have (on average 1.1730769230769231) internal successors, (61), 53 states have internal predecessors, (61), 29 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (29), 28 states have call predecessors, (29), 29 states have call successors, (29) [2023-11-19 04:14:41,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 119 transitions. [2023-11-19 04:14:41,958 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 119 transitions. Word has length 110 [2023-11-19 04:14:41,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:14:41,961 INFO L495 AbstractCegarLoop]: Abstraction has 84 states and 119 transitions. [2023-11-19 04:14:41,961 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-11-19 04:14:41,961 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 119 transitions. [2023-11-19 04:14:41,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2023-11-19 04:14:41,964 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:14:41,964 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:14:41,976 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83beb456-677f-4964-94e8-cb97215e7fe2/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-11-19 04:14:42,164 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83beb456-677f-4964-94e8-cb97215e7fe2/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 04:14:42,165 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 04:14:42,165 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:14:42,165 INFO L85 PathProgramCache]: Analyzing trace with hash -1681376381, now seen corresponding path program 1 times [2023-11-19 04:14:42,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 04:14:42,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [94862041] [2023-11-19 04:14:42,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:14:42,167 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 04:14:42,167 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83beb456-677f-4964-94e8-cb97215e7fe2/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 04:14:42,170 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83beb456-677f-4964-94e8-cb97215e7fe2/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-19 04:14:42,171 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83beb456-677f-4964-94e8-cb97215e7fe2/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)] Waiting until timeout for monitored process [2023-11-19 04:14:42,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:14:42,454 INFO L262 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 38 conjunts are in the unsatisfiable core [2023-11-19 04:14:42,466 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:15:10,562 WARN L293 SmtUtils]: Spent 8.60s on a formula simplification that was a NOOP. DAG size: 64 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)