./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_50-1loop_file-30.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc 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_b66a0aae-1f01-433d-8dd4-7f035639172c/bin/utaipan-verify-SwPr7d2a91/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b66a0aae-1f01-433d-8dd4-7f035639172c/bin/utaipan-verify-SwPr7d2a91/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b66a0aae-1f01-433d-8dd4-7f035639172c/bin/utaipan-verify-SwPr7d2a91/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b66a0aae-1f01-433d-8dd4-7f035639172c/bin/utaipan-verify-SwPr7d2a91/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_50-1loop_file-30.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b66a0aae-1f01-433d-8dd4-7f035639172c/bin/utaipan-verify-SwPr7d2a91/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b66a0aae-1f01-433d-8dd4-7f035639172c/bin/utaipan-verify-SwPr7d2a91 --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 9eaaae0cf3e71d4340efba7db39961ec1bda8a61f7ee6fd06bc6d6e04fc81770 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-24 23:49:48,298 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 23:49:48,362 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b66a0aae-1f01-433d-8dd4-7f035639172c/bin/utaipan-verify-SwPr7d2a91/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-11-24 23:49:48,368 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-24 23:49:48,369 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-24 23:49:48,396 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 23:49:48,397 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-24 23:49:48,397 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-24 23:49:48,398 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-24 23:49:48,399 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-24 23:49:48,399 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-24 23:49:48,400 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-24 23:49:48,401 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-24 23:49:48,401 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-24 23:49:48,402 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-24 23:49:48,403 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-24 23:49:48,403 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-24 23:49:48,404 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-24 23:49:48,405 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-24 23:49:48,405 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-24 23:49:48,406 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-24 23:49:48,407 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-24 23:49:48,408 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 23:49:48,408 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-24 23:49:48,409 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-24 23:49:48,410 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-24 23:49:48,410 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-24 23:49:48,411 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 23:49:48,411 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-24 23:49:48,412 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 23:49:48,413 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-24 23:49:48,413 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-24 23:49:48,414 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-24 23:49:48,414 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 23:49:48,415 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 23:49:48,415 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-24 23:49:48,416 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-24 23:49:48,416 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-24 23:49:48,417 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 23:49:48,417 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 23:49:48,418 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-24 23:49:48,418 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-24 23:49:48,419 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-24 23:49:48,419 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-24 23:49:48,419 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-24 23:49:48,420 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-24 23:49:48,420 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-24 23:49:48,421 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_b66a0aae-1f01-433d-8dd4-7f035639172c/bin/utaipan-verify-SwPr7d2a91/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b66a0aae-1f01-433d-8dd4-7f035639172c/bin/utaipan-verify-SwPr7d2a91 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9eaaae0cf3e71d4340efba7db39961ec1bda8a61f7ee6fd06bc6d6e04fc81770 [2023-11-24 23:49:48,718 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 23:49:48,747 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 23:49:48,750 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 23:49:48,752 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 23:49:48,753 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 23:49:48,754 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b66a0aae-1f01-433d-8dd4-7f035639172c/bin/utaipan-verify-SwPr7d2a91/../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_50-1loop_file-30.i [2023-11-24 23:49:51,962 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 23:49:52,227 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 23:49:52,228 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b66a0aae-1f01-433d-8dd4-7f035639172c/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_50-1loop_file-30.i [2023-11-24 23:49:52,239 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b66a0aae-1f01-433d-8dd4-7f035639172c/bin/utaipan-verify-SwPr7d2a91/data/c8181350e/3f1deb07aa7243648326b5c038a885af/FLAG6f50d79bc [2023-11-24 23:49:52,256 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b66a0aae-1f01-433d-8dd4-7f035639172c/bin/utaipan-verify-SwPr7d2a91/data/c8181350e/3f1deb07aa7243648326b5c038a885af [2023-11-24 23:49:52,259 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 23:49:52,261 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 23:49:52,263 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 23:49:52,263 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 23:49:52,270 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 23:49:52,274 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:49:52" (1/1) ... [2023-11-24 23:49:52,277 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c4bf9e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:49:52, skipping insertion in model container [2023-11-24 23:49:52,277 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:49:52" (1/1) ... [2023-11-24 23:49:52,329 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 23:49:52,521 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_b66a0aae-1f01-433d-8dd4-7f035639172c/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_50-1loop_file-30.i[915,928] [2023-11-24 23:49:52,578 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 23:49:52,592 INFO L202 MainTranslator]: Completed pre-run [2023-11-24 23:49:52,603 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_b66a0aae-1f01-433d-8dd4-7f035639172c/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_50-1loop_file-30.i[915,928] [2023-11-24 23:49:52,635 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 23:49:52,655 INFO L206 MainTranslator]: Completed translation [2023-11-24 23:49:52,655 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:49:52 WrapperNode [2023-11-24 23:49:52,656 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-24 23:49:52,657 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-24 23:49:52,657 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-24 23:49:52,657 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-24 23:49:52,667 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:49:52" (1/1) ... [2023-11-24 23:49:52,678 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:49:52" (1/1) ... [2023-11-24 23:49:52,716 INFO L138 Inliner]: procedures = 26, calls = 23, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 148 [2023-11-24 23:49:52,716 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-24 23:49:52,717 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-24 23:49:52,717 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-24 23:49:52,718 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-24 23:49:52,736 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:49:52" (1/1) ... [2023-11-24 23:49:52,736 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:49:52" (1/1) ... [2023-11-24 23:49:52,753 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:49:52" (1/1) ... [2023-11-24 23:49:52,754 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:49:52" (1/1) ... [2023-11-24 23:49:52,763 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:49:52" (1/1) ... [2023-11-24 23:49:52,784 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:49:52" (1/1) ... [2023-11-24 23:49:52,787 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:49:52" (1/1) ... [2023-11-24 23:49:52,788 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:49:52" (1/1) ... [2023-11-24 23:49:52,792 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-24 23:49:52,793 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-24 23:49:52,793 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-24 23:49:52,793 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-24 23:49:52,794 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:49:52" (1/1) ... [2023-11-24 23:49:52,817 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-24 23:49:52,844 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b66a0aae-1f01-433d-8dd4-7f035639172c/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:49:52,857 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b66a0aae-1f01-433d-8dd4-7f035639172c/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-24 23:49:52,886 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b66a0aae-1f01-433d-8dd4-7f035639172c/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-24 23:49:52,912 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-24 23:49:52,912 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-24 23:49:52,913 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-24 23:49:52,913 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-24 23:49:52,914 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-24 23:49:52,915 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-24 23:49:53,035 INFO L241 CfgBuilder]: Building ICFG [2023-11-24 23:49:53,038 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-24 23:49:53,382 INFO L282 CfgBuilder]: Performing block encoding [2023-11-24 23:49:53,751 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-24 23:49:53,751 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-24 23:49:53,753 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:49:53 BoogieIcfgContainer [2023-11-24 23:49:53,753 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-24 23:49:53,758 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-24 23:49:53,759 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-24 23:49:53,763 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-24 23:49:53,763 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 11:49:52" (1/3) ... [2023-11-24 23:49:53,765 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76c3ada5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 11:49:53, skipping insertion in model container [2023-11-24 23:49:53,765 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:49:52" (2/3) ... [2023-11-24 23:49:53,766 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76c3ada5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 11:49:53, skipping insertion in model container [2023-11-24 23:49:53,766 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:49:53" (3/3) ... [2023-11-24 23:49:53,768 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_loopvsstraightlinecode_50-1loop_file-30.i [2023-11-24 23:49:53,791 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-24 23:49:53,791 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-24 23:49:53,855 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-24 23:49:53,864 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;@56fef019, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 23:49:53,865 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-24 23:49:53,870 INFO L276 IsEmpty]: Start isEmpty. Operand has 26 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 14 states have internal predecessors, (16), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-11-24 23:49:53,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-11-24 23:49:53,880 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:49:53,882 INFO L195 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:49:53,882 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 23:49:53,890 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:49:53,890 INFO L85 PathProgramCache]: Analyzing trace with hash 1700847309, now seen corresponding path program 1 times [2023-11-24 23:49:53,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:49:53,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259046133] [2023-11-24 23:49:53,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:49:53,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:49:54,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-24 23:49:54,289 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-24 23:49:54,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-24 23:49:54,479 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-11-24 23:49:54,481 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-24 23:49:54,483 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-24 23:49:54,485 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-24 23:49:54,490 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-11-24 23:49:54,495 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-24 23:49:54,584 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.11 11:49:54 BoogieIcfgContainer [2023-11-24 23:49:54,584 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-24 23:49:54,586 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-24 23:49:54,586 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-24 23:49:54,586 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-24 23:49:54,587 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:49:53" (3/4) ... [2023-11-24 23:49:54,590 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-24 23:49:54,591 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-24 23:49:54,592 INFO L158 Benchmark]: Toolchain (without parser) took 2330.63ms. Allocated memory was 138.4MB in the beginning and 188.7MB in the end (delta: 50.3MB). Free memory was 92.7MB in the beginning and 98.8MB in the end (delta: -6.1MB). Peak memory consumption was 47.1MB. Max. memory is 16.1GB. [2023-11-24 23:49:54,593 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 96.5MB. Free memory is still 40.3MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-24 23:49:54,594 INFO L158 Benchmark]: CACSL2BoogieTranslator took 393.14ms. Allocated memory is still 138.4MB. Free memory was 92.7MB in the beginning and 79.5MB in the end (delta: 13.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-11-24 23:49:54,594 INFO L158 Benchmark]: Boogie Procedure Inliner took 59.57ms. Allocated memory is still 138.4MB. Free memory was 79.5MB in the beginning and 77.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-24 23:49:54,595 INFO L158 Benchmark]: Boogie Preprocessor took 74.71ms. Allocated memory is still 138.4MB. Free memory was 77.4MB in the beginning and 75.7MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-24 23:49:54,596 INFO L158 Benchmark]: RCFGBuilder took 960.93ms. Allocated memory was 138.4MB in the beginning and 188.7MB in the end (delta: 50.3MB). Free memory was 75.7MB in the beginning and 129.3MB in the end (delta: -53.6MB). Peak memory consumption was 17.7MB. Max. memory is 16.1GB. [2023-11-24 23:49:54,596 INFO L158 Benchmark]: TraceAbstraction took 825.68ms. Allocated memory is still 188.7MB. Free memory was 128.2MB in the beginning and 98.8MB in the end (delta: 29.4MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. [2023-11-24 23:49:54,597 INFO L158 Benchmark]: Witness Printer took 5.16ms. Allocated memory is still 188.7MB. Free memory was 98.8MB in the beginning and 98.8MB in the end (delta: 2.7kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-24 23:49:54,600 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28ms. Allocated memory is still 96.5MB. Free memory is still 40.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 393.14ms. Allocated memory is still 138.4MB. Free memory was 92.7MB in the beginning and 79.5MB in the end (delta: 13.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 59.57ms. Allocated memory is still 138.4MB. Free memory was 79.5MB in the beginning and 77.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 74.71ms. Allocated memory is still 138.4MB. Free memory was 77.4MB in the beginning and 75.7MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 960.93ms. Allocated memory was 138.4MB in the beginning and 188.7MB in the end (delta: 50.3MB). Free memory was 75.7MB in the beginning and 129.3MB in the end (delta: -53.6MB). Peak memory consumption was 17.7MB. Max. memory is 16.1GB. * TraceAbstraction took 825.68ms. Allocated memory is still 188.7MB. Free memory was 128.2MB in the beginning and 98.8MB in the end (delta: 29.4MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. * Witness Printer took 5.16ms. Allocated memory is still 188.7MB. Free memory was 98.8MB in the beginning and 98.8MB in the end (delta: 2.7kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 19]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 43, overapproximation of bitwiseAnd at line 64, overapproximation of someBinaryArithmeticDOUBLEoperation at line 78. Possible FailurePath: [L21] unsigned char isInitial = 0; [L22] unsigned char var_1_1 = 1; [L23] unsigned char var_1_4 = 0; [L24] double var_1_5 = 127.5; [L25] double var_1_7 = 10000000000000.125; [L26] double var_1_8 = 1.25; [L27] double var_1_10 = 25.7; [L28] signed long int var_1_11 = -2; [L29] signed long int var_1_13 = 5; [L30] signed long int var_1_14 = 128; [L31] signed long int var_1_15 = 1000; [L32] double var_1_16 = 0.2; [L33] double var_1_17 = 0.25; [L34] double var_1_18 = 99999999999999.5; [L35] unsigned char last_1_var_1_1 = 1; [L36] signed long int last_1_var_1_11 = -2; [L37] signed long int last_1_var_1_15 = 1000; [L38] double last_1_var_1_16 = 0.2; [L124] isInitial = 1 [L125] FCALL initially() [L126] int k_loop; [L127] k_loop = 0 VAL [isInitial=1, k_loop=0, last_1_var_1_11=-2, last_1_var_1_15=1000, last_1_var_1_16=1/5, last_1_var_1_1=1, var_1_10=257/10, var_1_11=-2, var_1_13=5, var_1_14=128, var_1_15=1000, var_1_16=1/5, var_1_17=1/4, var_1_18=199999999999999/2, var_1_1=1, var_1_4=0, var_1_5=255/2, var_1_7=80000000000001/8, var_1_8=5/4] [L127] COND TRUE k_loop < 1 [L128] CALL updateLastVariables() [L114] last_1_var_1_1 = var_1_1 [L115] last_1_var_1_11 = var_1_11 [L116] last_1_var_1_15 = var_1_15 [L117] last_1_var_1_16 = var_1_16 [L128] RET updateLastVariables() [L129] CALL updateVariables() [L95] var_1_4 = __VERIFIER_nondet_uchar() [L96] CALL assume_abort_if_not(var_1_4 >= 1) VAL [\old(cond)=1, isInitial=1, last_1_var_1_11=-2, last_1_var_1_15=1000, last_1_var_1_16=1/5, last_1_var_1_1=1, var_1_10=257/10, var_1_11=-2, var_1_13=5, var_1_14=128, var_1_15=1000, var_1_16=1/5, var_1_17=1/4, var_1_18=199999999999999/2, var_1_1=1, var_1_4=1, var_1_5=255/2, var_1_7=80000000000001/8, var_1_8=5/4] [L20] COND FALSE !(!cond) [L96] RET assume_abort_if_not(var_1_4 >= 1) VAL [isInitial=1, last_1_var_1_11=-2, last_1_var_1_15=1000, last_1_var_1_16=1/5, last_1_var_1_1=1, var_1_10=257/10, var_1_11=-2, var_1_13=5, var_1_14=128, var_1_15=1000, var_1_16=1/5, var_1_17=1/4, var_1_18=199999999999999/2, var_1_1=1, var_1_4=1, var_1_5=255/2, var_1_7=80000000000001/8, var_1_8=5/4] [L97] CALL assume_abort_if_not(var_1_4 <= 1) VAL [\old(cond)=1, isInitial=1, last_1_var_1_11=-2, last_1_var_1_15=1000, last_1_var_1_16=1/5, last_1_var_1_1=1, var_1_10=257/10, var_1_11=-2, var_1_13=5, var_1_14=128, var_1_15=1000, var_1_16=1/5, var_1_17=1/4, var_1_18=199999999999999/2, var_1_1=1, var_1_4=1, var_1_5=255/2, var_1_7=80000000000001/8, var_1_8=5/4] [L20] COND FALSE !(!cond) [L97] RET assume_abort_if_not(var_1_4 <= 1) VAL [isInitial=1, last_1_var_1_11=-2, last_1_var_1_15=1000, last_1_var_1_16=1/5, last_1_var_1_1=1, var_1_10=257/10, var_1_11=-2, var_1_13=5, var_1_14=128, var_1_15=1000, var_1_16=1/5, var_1_17=1/4, var_1_18=199999999999999/2, var_1_1=1, var_1_4=1, var_1_5=255/2, var_1_7=80000000000001/8, var_1_8=5/4] [L98] var_1_7 = __VERIFIER_nondet_double() [L99] CALL assume_abort_if_not((var_1_7 >= -922337.2036854765600e+13F && var_1_7 <= -1.0e-20F) || (var_1_7 <= 9223372.036854765600e+12F && var_1_7 >= 1.0e-20F )) VAL [\old(cond)=1, isInitial=1, last_1_var_1_11=-2, last_1_var_1_15=1000, last_1_var_1_16=1/5, last_1_var_1_1=1, var_1_10=257/10, var_1_11=-2, var_1_13=5, var_1_14=128, var_1_15=1000, var_1_16=1/5, var_1_17=1/4, var_1_18=199999999999999/2, var_1_1=1, var_1_4=1, var_1_5=255/2, var_1_8=5/4] [L20] COND FALSE !(!cond) [L99] RET assume_abort_if_not((var_1_7 >= -922337.2036854765600e+13F && var_1_7 <= -1.0e-20F) || (var_1_7 <= 9223372.036854765600e+12F && var_1_7 >= 1.0e-20F )) VAL [isInitial=1, last_1_var_1_11=-2, last_1_var_1_15=1000, last_1_var_1_16=1/5, last_1_var_1_1=1, var_1_10=257/10, var_1_11=-2, var_1_13=5, var_1_14=128, var_1_15=1000, var_1_16=1/5, var_1_17=1/4, var_1_18=199999999999999/2, var_1_1=1, var_1_4=1, var_1_5=255/2, var_1_8=5/4] [L100] var_1_10 = __VERIFIER_nondet_double() [L101] CALL assume_abort_if_not((var_1_10 >= -922337.2036854765600e+13F && var_1_10 <= -1.0e-20F) || (var_1_10 <= 9223372.036854765600e+12F && var_1_10 >= 1.0e-20F )) VAL [\old(cond)=1, isInitial=1, last_1_var_1_11=-2, last_1_var_1_15=1000, last_1_var_1_16=1/5, last_1_var_1_1=1, var_1_11=-2, var_1_13=5, var_1_14=128, var_1_15=1000, var_1_16=1/5, var_1_17=1/4, var_1_18=199999999999999/2, var_1_1=1, var_1_4=1, var_1_5=255/2, var_1_8=5/4] [L20] COND FALSE !(!cond) [L101] RET assume_abort_if_not((var_1_10 >= -922337.2036854765600e+13F && var_1_10 <= -1.0e-20F) || (var_1_10 <= 9223372.036854765600e+12F && var_1_10 >= 1.0e-20F )) VAL [isInitial=1, last_1_var_1_11=-2, last_1_var_1_15=1000, last_1_var_1_16=1/5, last_1_var_1_1=1, var_1_11=-2, var_1_13=5, var_1_14=128, var_1_15=1000, var_1_16=1/5, var_1_17=1/4, var_1_18=199999999999999/2, var_1_1=1, var_1_4=1, var_1_5=255/2, var_1_8=5/4] [L102] var_1_13 = __VERIFIER_nondet_long() [L103] CALL assume_abort_if_not(var_1_13 >= -1) VAL [\old(cond)=1, isInitial=1, last_1_var_1_11=-2, last_1_var_1_15=1000, last_1_var_1_16=1/5, last_1_var_1_1=1, var_1_11=-2, var_1_13=0, var_1_14=128, var_1_15=1000, var_1_16=1/5, var_1_17=1/4, var_1_18=199999999999999/2, var_1_1=1, var_1_4=1, var_1_5=255/2, var_1_8=5/4] [L20] COND FALSE !(!cond) [L103] RET assume_abort_if_not(var_1_13 >= -1) VAL [isInitial=1, last_1_var_1_11=-2, last_1_var_1_15=1000, last_1_var_1_16=1/5, last_1_var_1_1=1, var_1_11=-2, var_1_13=0, var_1_14=128, var_1_15=1000, var_1_16=1/5, var_1_17=1/4, var_1_18=199999999999999/2, var_1_1=1, var_1_4=1, var_1_5=255/2, var_1_8=5/4] [L104] CALL assume_abort_if_not(var_1_13 <= 2147483646) VAL [\old(cond)=1, isInitial=1, last_1_var_1_11=-2, last_1_var_1_15=1000, last_1_var_1_16=1/5, last_1_var_1_1=1, var_1_11=-2, var_1_13=0, var_1_14=128, var_1_15=1000, var_1_16=1/5, var_1_17=1/4, var_1_18=199999999999999/2, var_1_1=1, var_1_4=1, var_1_5=255/2, var_1_8=5/4] [L20] COND FALSE !(!cond) [L104] RET assume_abort_if_not(var_1_13 <= 2147483646) VAL [isInitial=1, last_1_var_1_11=-2, last_1_var_1_15=1000, last_1_var_1_16=1/5, last_1_var_1_1=1, var_1_11=-2, var_1_13=0, var_1_14=128, var_1_15=1000, var_1_16=1/5, var_1_17=1/4, var_1_18=199999999999999/2, var_1_1=1, var_1_4=1, var_1_5=255/2, var_1_8=5/4] [L105] var_1_14 = __VERIFIER_nondet_long() [L106] CALL assume_abort_if_not(var_1_14 >= -2147483647) VAL [\old(cond)=1, isInitial=1, last_1_var_1_11=-2, last_1_var_1_15=1000, last_1_var_1_16=1/5, last_1_var_1_1=1, var_1_11=-2, var_1_13=0, var_1_14=-6, var_1_15=1000, var_1_16=1/5, var_1_17=1/4, var_1_18=199999999999999/2, var_1_1=1, var_1_4=1, var_1_5=255/2, var_1_8=5/4] [L20] COND FALSE !(!cond) [L106] RET assume_abort_if_not(var_1_14 >= -2147483647) VAL [isInitial=1, last_1_var_1_11=-2, last_1_var_1_15=1000, last_1_var_1_16=1/5, last_1_var_1_1=1, var_1_11=-2, var_1_13=0, var_1_14=-6, var_1_15=1000, var_1_16=1/5, var_1_17=1/4, var_1_18=199999999999999/2, var_1_1=1, var_1_4=1, var_1_5=255/2, var_1_8=5/4] [L107] CALL assume_abort_if_not(var_1_14 <= 2147483646) VAL [\old(cond)=1, isInitial=1, last_1_var_1_11=-2, last_1_var_1_15=1000, last_1_var_1_16=1/5, last_1_var_1_1=1, var_1_11=-2, var_1_13=0, var_1_14=-6, var_1_15=1000, var_1_16=1/5, var_1_17=1/4, var_1_18=199999999999999/2, var_1_1=1, var_1_4=1, var_1_5=255/2, var_1_8=5/4] [L20] COND FALSE !(!cond) [L107] RET assume_abort_if_not(var_1_14 <= 2147483646) VAL [isInitial=1, last_1_var_1_11=-2, last_1_var_1_15=1000, last_1_var_1_16=1/5, last_1_var_1_1=1, var_1_11=-2, var_1_13=0, var_1_14=-6, var_1_15=1000, var_1_16=1/5, var_1_17=1/4, var_1_18=199999999999999/2, var_1_1=1, var_1_4=1, var_1_5=255/2, var_1_8=5/4] [L108] var_1_17 = __VERIFIER_nondet_double() [L109] CALL assume_abort_if_not((var_1_17 >= -461168.6018427382800e+13F && var_1_17 <= -1.0e-20F) || (var_1_17 <= 4611686.018427382800e+12F && var_1_17 >= 1.0e-20F )) VAL [\old(cond)=1, isInitial=1, last_1_var_1_11=-2, last_1_var_1_15=1000, last_1_var_1_16=1/5, last_1_var_1_1=1, var_1_11=-2, var_1_13=0, var_1_14=-6, var_1_15=1000, var_1_16=1/5, var_1_18=199999999999999/2, var_1_1=1, var_1_4=1, var_1_5=255/2, var_1_8=5/4] [L20] COND FALSE !(!cond) [L109] RET assume_abort_if_not((var_1_17 >= -461168.6018427382800e+13F && var_1_17 <= -1.0e-20F) || (var_1_17 <= 4611686.018427382800e+12F && var_1_17 >= 1.0e-20F )) VAL [isInitial=1, last_1_var_1_11=-2, last_1_var_1_15=1000, last_1_var_1_16=1/5, last_1_var_1_1=1, var_1_11=-2, var_1_13=0, var_1_14=-6, var_1_15=1000, var_1_16=1/5, var_1_18=199999999999999/2, var_1_1=1, var_1_4=1, var_1_5=255/2, var_1_8=5/4] [L110] var_1_18 = __VERIFIER_nondet_double() [L111] CALL assume_abort_if_not((var_1_18 >= -230584.3009213691390e+13F && var_1_18 <= -1.0e-20F) || (var_1_18 <= 2305843.009213691390e+12F && var_1_18 >= 1.0e-20F )) VAL [\old(cond)=1, isInitial=1, last_1_var_1_11=-2, last_1_var_1_15=1000, last_1_var_1_16=1/5, last_1_var_1_1=1, var_1_11=-2, var_1_13=0, var_1_14=-6, var_1_15=1000, var_1_16=1/5, var_1_1=1, var_1_4=1, var_1_5=255/2, var_1_8=5/4] [L20] COND FALSE !(!cond) [L111] RET assume_abort_if_not((var_1_18 >= -230584.3009213691390e+13F && var_1_18 <= -1.0e-20F) || (var_1_18 <= 2305843.009213691390e+12F && var_1_18 >= 1.0e-20F )) VAL [isInitial=1, last_1_var_1_11=-2, last_1_var_1_15=1000, last_1_var_1_16=1/5, last_1_var_1_1=1, var_1_11=-2, var_1_13=0, var_1_14=-6, var_1_15=1000, var_1_16=1/5, var_1_1=1, var_1_4=1, var_1_5=255/2, var_1_8=5/4] [L129] RET updateVariables() [L130] CALL step() [L42] COND TRUE \read(last_1_var_1_1) [L43] COND FALSE !(((((last_1_var_1_16) > (49.75)) ? (last_1_var_1_16) : (49.75))) > last_1_var_1_16) [L49] signed long int stepLocal_0 = last_1_var_1_11; [L50] COND TRUE (last_1_var_1_11 / ((((-16) < 0 ) ? -(-16) : (-16)))) >= stepLocal_0 [L51] var_1_1 = var_1_4 [L53] signed long int stepLocal_2 = var_1_11; [L54] unsigned char stepLocal_1 = var_1_1; [L55] COND TRUE \read(var_1_1) [L56] COND TRUE var_1_11 >= stepLocal_2 [L57] COND TRUE stepLocal_1 || (var_1_11 < var_1_11) [L58] var_1_5 = var_1_7 [L64] EXPR var_1_11 & var_1_13 [L64] COND TRUE (- var_1_11) > (var_1_11 & var_1_13) [L65] COND TRUE var_1_11 <= 128 [L66] COND TRUE \read(var_1_1) [L67] var_1_15 = var_1_14 [L77] COND TRUE ((((var_1_5) < (last_1_var_1_16)) ? (var_1_5) : (last_1_var_1_16))) >= var_1_7 [L78] var_1_16 = (var_1_17 + (var_1_18 + 16.75)) [L82] COND FALSE !(10.55f < var_1_16) [L87] COND TRUE var_1_16 > var_1_7 [L88] var_1_8 = var_1_10 [L130] RET step() [L131] CALL, EXPR property() [L120] EXPR ((((((last_1_var_1_11 / ((((-16) < 0 ) ? -(-16) : (-16)))) >= last_1_var_1_11) ? (var_1_1 == ((unsigned char) var_1_4)) : 1) && (var_1_1 ? ((var_1_11 >= var_1_11) ? ((var_1_1 || (var_1_11 < var_1_11)) ? (var_1_5 == ((double) var_1_7)) : 1) : (var_1_5 == ((double) var_1_7))) : 1)) && ((10.55f < var_1_16) ? ((var_1_16 > (var_1_7 * var_1_16)) ? (var_1_8 == ((double) ((((var_1_7) > (var_1_10)) ? (var_1_7) : (var_1_10))))) : 1) : ((var_1_16 > var_1_7) ? (var_1_8 == ((double) var_1_10)) : (var_1_8 == ((double) var_1_7))))) && (last_1_var_1_1 ? ((((((last_1_var_1_16) > (49.75)) ? (last_1_var_1_16) : (49.75))) > last_1_var_1_16) ? (var_1_11 == ((signed long int) ((((last_1_var_1_15) < ((((((var_1_13 - 5)) > (var_1_14)) ? ((var_1_13 - 5)) : (var_1_14))))) ? (last_1_var_1_15) : ((((((var_1_13 - 5)) > (var_1_14)) ? ((var_1_13 - 5)) : (var_1_14)))))))) : 1) : (var_1_11 == ((signed long int) last_1_var_1_15)))) && (((- var_1_11) > (var_1_11 & var_1_13)) ? ((var_1_11 <= 128) ? (var_1_1 ? (var_1_15 == ((signed long int) var_1_14)) : (var_1_15 == ((signed long int) var_1_14))) : (var_1_15 == ((signed long int) var_1_14))) : (var_1_15 == ((signed long int) var_1_13))) [L120-L121] return (((((((last_1_var_1_11 / ((((-16) < 0 ) ? -(-16) : (-16)))) >= last_1_var_1_11) ? (var_1_1 == ((unsigned char) var_1_4)) : 1) && (var_1_1 ? ((var_1_11 >= var_1_11) ? ((var_1_1 || (var_1_11 < var_1_11)) ? (var_1_5 == ((double) var_1_7)) : 1) : (var_1_5 == ((double) var_1_7))) : 1)) && ((10.55f < var_1_16) ? ((var_1_16 > (var_1_7 * var_1_16)) ? (var_1_8 == ((double) ((((var_1_7) > (var_1_10)) ? (var_1_7) : (var_1_10))))) : 1) : ((var_1_16 > var_1_7) ? (var_1_8 == ((double) var_1_10)) : (var_1_8 == ((double) var_1_7))))) && (last_1_var_1_1 ? ((((((last_1_var_1_16) > (49.75)) ? (last_1_var_1_16) : (49.75))) > last_1_var_1_16) ? (var_1_11 == ((signed long int) ((((last_1_var_1_15) < ((((((var_1_13 - 5)) > (var_1_14)) ? ((var_1_13 - 5)) : (var_1_14))))) ? (last_1_var_1_15) : ((((((var_1_13 - 5)) > (var_1_14)) ? ((var_1_13 - 5)) : (var_1_14)))))))) : 1) : (var_1_11 == ((signed long int) last_1_var_1_15)))) && (((- var_1_11) > (var_1_11 & var_1_13)) ? ((var_1_11 <= 128) ? (var_1_1 ? (var_1_15 == ((signed long int) var_1_14)) : (var_1_15 == ((signed long int) var_1_14))) : (var_1_15 == ((signed long int) var_1_14))) : (var_1_15 == ((signed long int) var_1_13)))) && ((((((var_1_5) < (last_1_var_1_16)) ? (var_1_5) : (last_1_var_1_16))) >= var_1_7) ? (var_1_16 == ((double) (var_1_17 + (var_1_18 + 16.75)))) : (var_1_16 == ((double) var_1_17))) ; [L131] RET, EXPR property() [L131] CALL __VERIFIER_assert(property()) [L19] COND TRUE !(cond) VAL [\old(cond)=0, cond=0, isInitial=1, last_1_var_1_11=-2, last_1_var_1_15=1000, last_1_var_1_16=1/5, last_1_var_1_1=1, var_1_10=255/2, var_1_11=-2, var_1_13=0, var_1_14=-6, var_1_15=-6, var_1_16=100000000000004, var_1_17=100000000000004, var_1_1=1, var_1_4=1, var_1_5=255/2, var_1_7=255/2, var_1_8=255/2] [L19] reach_error() VAL [\old(cond)=0, cond=0, isInitial=1, last_1_var_1_11=-2, last_1_var_1_15=1000, last_1_var_1_16=1/5, last_1_var_1_1=1, var_1_10=255/2, var_1_11=-2, var_1_13=0, var_1_14=-6, var_1_15=-6, var_1_16=100000000000004, var_1_17=100000000000004, var_1_1=1, var_1_4=1, var_1_5=255/2, var_1_7=255/2, var_1_8=255/2] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 26 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.7s, OverallIterations: 1, TraceHistogramMax: 10, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=26occurred 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, 0.3s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 41 NumberOfCodeBlocks, 41 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 [2023-11-24 23:49:54,626 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b66a0aae-1f01-433d-8dd4-7f035639172c/bin/utaipan-verify-SwPr7d2a91/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_b66a0aae-1f01-433d-8dd4-7f035639172c/bin/utaipan-verify-SwPr7d2a91/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b66a0aae-1f01-433d-8dd4-7f035639172c/bin/utaipan-verify-SwPr7d2a91/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b66a0aae-1f01-433d-8dd4-7f035639172c/bin/utaipan-verify-SwPr7d2a91/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b66a0aae-1f01-433d-8dd4-7f035639172c/bin/utaipan-verify-SwPr7d2a91/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_50-1loop_file-30.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b66a0aae-1f01-433d-8dd4-7f035639172c/bin/utaipan-verify-SwPr7d2a91/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b66a0aae-1f01-433d-8dd4-7f035639172c/bin/utaipan-verify-SwPr7d2a91 --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 9eaaae0cf3e71d4340efba7db39961ec1bda8a61f7ee6fd06bc6d6e04fc81770 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-24 23:49:57,401 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 23:49:57,552 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b66a0aae-1f01-433d-8dd4-7f035639172c/bin/utaipan-verify-SwPr7d2a91/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2023-11-24 23:49:57,561 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-24 23:49:57,562 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-24 23:49:57,611 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 23:49:57,611 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-24 23:49:57,612 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-24 23:49:57,613 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-24 23:49:57,618 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-24 23:49:57,619 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-24 23:49:57,619 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-24 23:49:57,620 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-24 23:49:57,622 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-24 23:49:57,622 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-24 23:49:57,623 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-24 23:49:57,624 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 23:49:57,624 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-24 23:49:57,625 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-24 23:49:57,626 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-24 23:49:57,627 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 23:49:57,627 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-24 23:49:57,628 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 23:49:57,628 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-24 23:49:57,629 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-24 23:49:57,629 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-24 23:49:57,630 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-24 23:49:57,630 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-24 23:49:57,631 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-24 23:49:57,631 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 23:49:57,633 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 23:49:57,633 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-24 23:49:57,633 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-24 23:49:57,634 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-24 23:49:57,634 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-24 23:49:57,634 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 23:49:57,635 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 23:49:57,635 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-24 23:49:57,635 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-11-24 23:49:57,636 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-24 23:49:57,637 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-24 23:49:57,637 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-24 23:49:57,637 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-24 23:49:57,637 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-24 23:49:57,638 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_b66a0aae-1f01-433d-8dd4-7f035639172c/bin/utaipan-verify-SwPr7d2a91/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b66a0aae-1f01-433d-8dd4-7f035639172c/bin/utaipan-verify-SwPr7d2a91 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9eaaae0cf3e71d4340efba7db39961ec1bda8a61f7ee6fd06bc6d6e04fc81770 [2023-11-24 23:49:58,103 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 23:49:58,138 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 23:49:58,143 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 23:49:58,144 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 23:49:58,146 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 23:49:58,148 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b66a0aae-1f01-433d-8dd4-7f035639172c/bin/utaipan-verify-SwPr7d2a91/../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_50-1loop_file-30.i [2023-11-24 23:50:01,378 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 23:50:01,727 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 23:50:01,727 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b66a0aae-1f01-433d-8dd4-7f035639172c/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_50-1loop_file-30.i [2023-11-24 23:50:01,748 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b66a0aae-1f01-433d-8dd4-7f035639172c/bin/utaipan-verify-SwPr7d2a91/data/8b2d251c9/b26bb53330484f9f918d8b1bf1f91e08/FLAG56a77a6a6 [2023-11-24 23:50:01,775 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b66a0aae-1f01-433d-8dd4-7f035639172c/bin/utaipan-verify-SwPr7d2a91/data/8b2d251c9/b26bb53330484f9f918d8b1bf1f91e08 [2023-11-24 23:50:01,782 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 23:50:01,784 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 23:50:01,788 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 23:50:01,789 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 23:50:01,795 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 23:50:01,796 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:50:01" (1/1) ... [2023-11-24 23:50:01,797 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4bbfa19b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:50:01, skipping insertion in model container [2023-11-24 23:50:01,798 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:50:01" (1/1) ... [2023-11-24 23:50:01,854 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 23:50:02,073 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_b66a0aae-1f01-433d-8dd4-7f035639172c/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_50-1loop_file-30.i[915,928] [2023-11-24 23:50:02,136 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 23:50:02,159 INFO L202 MainTranslator]: Completed pre-run [2023-11-24 23:50:02,174 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_b66a0aae-1f01-433d-8dd4-7f035639172c/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_50-1loop_file-30.i[915,928] [2023-11-24 23:50:02,231 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 23:50:02,257 INFO L206 MainTranslator]: Completed translation [2023-11-24 23:50:02,257 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:50:02 WrapperNode [2023-11-24 23:50:02,258 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-24 23:50:02,259 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-24 23:50:02,259 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-24 23:50:02,259 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-24 23:50:02,267 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:50:02" (1/1) ... [2023-11-24 23:50:02,281 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:50:02" (1/1) ... [2023-11-24 23:50:02,327 INFO L138 Inliner]: procedures = 27, calls = 23, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 121 [2023-11-24 23:50:02,334 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-24 23:50:02,335 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-24 23:50:02,336 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-24 23:50:02,336 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-24 23:50:02,347 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:50:02" (1/1) ... [2023-11-24 23:50:02,348 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:50:02" (1/1) ... [2023-11-24 23:50:02,376 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:50:02" (1/1) ... [2023-11-24 23:50:02,381 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:50:02" (1/1) ... [2023-11-24 23:50:02,400 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:50:02" (1/1) ... [2023-11-24 23:50:02,412 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:50:02" (1/1) ... [2023-11-24 23:50:02,415 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:50:02" (1/1) ... [2023-11-24 23:50:02,417 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:50:02" (1/1) ... [2023-11-24 23:50:02,422 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-24 23:50:02,423 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-24 23:50:02,423 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-24 23:50:02,424 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-24 23:50:02,424 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:50:02" (1/1) ... [2023-11-24 23:50:02,431 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-24 23:50:02,458 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b66a0aae-1f01-433d-8dd4-7f035639172c/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:50:02,475 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b66a0aae-1f01-433d-8dd4-7f035639172c/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-24 23:50:02,514 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b66a0aae-1f01-433d-8dd4-7f035639172c/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-24 23:50:02,527 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-24 23:50:02,527 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-24 23:50:02,527 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-24 23:50:02,528 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-24 23:50:02,528 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-24 23:50:02,528 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-24 23:50:02,654 INFO L241 CfgBuilder]: Building ICFG [2023-11-24 23:50:02,657 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-24 23:50:10,490 INFO L282 CfgBuilder]: Performing block encoding [2023-11-24 23:50:10,575 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-24 23:50:10,576 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-24 23:50:10,576 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:50:10 BoogieIcfgContainer [2023-11-24 23:50:10,576 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-24 23:50:10,579 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-24 23:50:10,579 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-24 23:50:10,582 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-24 23:50:10,582 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 11:50:01" (1/3) ... [2023-11-24 23:50:10,583 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75c9fda4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 11:50:10, skipping insertion in model container [2023-11-24 23:50:10,583 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:50:02" (2/3) ... [2023-11-24 23:50:10,584 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75c9fda4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 11:50:10, skipping insertion in model container [2023-11-24 23:50:10,584 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:50:10" (3/3) ... [2023-11-24 23:50:10,585 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_loopvsstraightlinecode_50-1loop_file-30.i [2023-11-24 23:50:10,605 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-24 23:50:10,606 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-24 23:50:10,659 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-24 23:50:10,665 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;@1a6d38e4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 23:50:10,666 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-24 23:50:10,669 INFO L276 IsEmpty]: Start isEmpty. Operand has 45 states, 32 states have (on average 1.5625) internal successors, (50), 33 states have internal predecessors, (50), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-11-24 23:50:10,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-11-24 23:50:10,679 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:50:10,680 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:50:10,681 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 23:50:10,686 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:50:10,687 INFO L85 PathProgramCache]: Analyzing trace with hash 648497747, now seen corresponding path program 1 times [2023-11-24 23:50:10,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-24 23:50:10,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [32542733] [2023-11-24 23:50:10,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:50:10,710 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 [2023-11-24 23:50:10,710 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b66a0aae-1f01-433d-8dd4-7f035639172c/bin/utaipan-verify-SwPr7d2a91/mathsat [2023-11-24 23:50:10,712 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b66a0aae-1f01-433d-8dd4-7f035639172c/bin/utaipan-verify-SwPr7d2a91/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) [2023-11-24 23:50:10,717 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b66a0aae-1f01-433d-8dd4-7f035639172c/bin/utaipan-verify-SwPr7d2a91/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 [2023-11-24 23:50:11,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:50:11,207 INFO L262 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-24 23:50:11,216 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:50:11,257 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2023-11-24 23:50:11,258 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:50:11,259 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-24 23:50:11,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [32542733] [2023-11-24 23:50:11,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [32542733] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:50:11,260 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:50:11,260 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 23:50:11,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715967514] [2023-11-24 23:50:11,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:50:11,268 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-24 23:50:11,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-24 23:50:11,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-24 23:50:11,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-24 23:50:11,305 INFO L87 Difference]: Start difference. First operand has 45 states, 32 states have (on average 1.5625) internal successors, (50), 33 states have internal predecessors, (50), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) Second operand has 2 states, 2 states have (on average 13.0) internal successors, (26), 2 states have internal predecessors, (26), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-24 23:50:13,509 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-24 23:50:13,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:50:13,566 INFO L93 Difference]: Finished difference Result 89 states and 149 transitions. [2023-11-24 23:50:13,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-24 23:50:13,570 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 13.0) internal successors, (26), 2 states have internal predecessors, (26), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) Word has length 71 [2023-11-24 23:50:13,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:50:13,579 INFO L225 Difference]: With dead ends: 89 [2023-11-24 23:50:13,580 INFO L226 Difference]: Without dead ends: 43 [2023-11-24 23:50:13,583 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-24 23:50:13,587 INFO L413 NwaCegarLoop]: 62 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-11-24 23:50:13,589 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 62 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 1 Unknown, 0 Unchecked, 2.2s Time] [2023-11-24 23:50:13,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2023-11-24 23:50:13,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2023-11-24 23:50:13,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 31 states have (on average 1.4516129032258065) internal successors, (45), 31 states have internal predecessors, (45), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-11-24 23:50:13,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 65 transitions. [2023-11-24 23:50:13,637 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 65 transitions. Word has length 71 [2023-11-24 23:50:13,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:50:13,638 INFO L495 AbstractCegarLoop]: Abstraction has 43 states and 65 transitions. [2023-11-24 23:50:13,638 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 13.0) internal successors, (26), 2 states have internal predecessors, (26), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-24 23:50:13,639 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 65 transitions. [2023-11-24 23:50:13,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-11-24 23:50:13,643 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:50:13,643 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:50:13,661 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b66a0aae-1f01-433d-8dd4-7f035639172c/bin/utaipan-verify-SwPr7d2a91/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 [2023-11-24 23:50:13,861 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b66a0aae-1f01-433d-8dd4-7f035639172c/bin/utaipan-verify-SwPr7d2a91/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 [2023-11-24 23:50:13,862 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 23:50:13,862 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:50:13,863 INFO L85 PathProgramCache]: Analyzing trace with hash -1312650229, now seen corresponding path program 1 times [2023-11-24 23:50:13,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-24 23:50:13,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1868806034] [2023-11-24 23:50:13,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:50:13,864 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 [2023-11-24 23:50:13,864 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b66a0aae-1f01-433d-8dd4-7f035639172c/bin/utaipan-verify-SwPr7d2a91/mathsat [2023-11-24 23:50:13,865 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b66a0aae-1f01-433d-8dd4-7f035639172c/bin/utaipan-verify-SwPr7d2a91/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) [2023-11-24 23:50:13,867 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b66a0aae-1f01-433d-8dd4-7f035639172c/bin/utaipan-verify-SwPr7d2a91/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 [2023-11-24 23:50:14,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:50:14,419 INFO L262 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-24 23:50:14,425 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:50:14,956 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2023-11-24 23:50:14,956 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:50:14,956 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-24 23:50:14,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1868806034] [2023-11-24 23:50:14,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1868806034] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:50:14,957 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:50:14,957 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 23:50:14,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058937157] [2023-11-24 23:50:14,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:50:14,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 23:50:14,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-24 23:50:14,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 23:50:14,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-24 23:50:14,962 INFO L87 Difference]: Start difference. First operand 43 states and 65 transitions. Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2023-11-24 23:50:17,002 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-24 23:50:19,429 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-24 23:50:21,434 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-24 23:50:23,442 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-24 23:50:26,987 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-24 23:50:28,991 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-24 23:50:30,997 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-24 23:50:31,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:50:31,058 INFO L93 Difference]: Finished difference Result 144 states and 220 transitions. [2023-11-24 23:50:31,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 23:50:31,059 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) Word has length 71 [2023-11-24 23:50:31,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:50:31,062 INFO L225 Difference]: With dead ends: 144 [2023-11-24 23:50:31,062 INFO L226 Difference]: Without dead ends: 102 [2023-11-24 23:50:31,064 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-24 23:50:31,065 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 72 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 23 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 193 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.0s IncrementalHoareTripleChecker+Time [2023-11-24 23:50:31,066 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 193 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 20 Invalid, 7 Unknown, 0 Unchecked, 16.0s Time] [2023-11-24 23:50:31,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2023-11-24 23:50:31,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 83. [2023-11-24 23:50:31,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 60 states have (on average 1.4166666666666667) internal successors, (85), 60 states have internal predecessors, (85), 20 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-11-24 23:50:31,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 125 transitions. [2023-11-24 23:50:31,096 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 125 transitions. Word has length 71 [2023-11-24 23:50:31,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:50:31,097 INFO L495 AbstractCegarLoop]: Abstraction has 83 states and 125 transitions. [2023-11-24 23:50:31,097 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2023-11-24 23:50:31,098 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 125 transitions. [2023-11-24 23:50:31,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-11-24 23:50:31,100 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:50:31,101 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:50:31,117 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b66a0aae-1f01-433d-8dd4-7f035639172c/bin/utaipan-verify-SwPr7d2a91/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 [2023-11-24 23:50:31,313 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b66a0aae-1f01-433d-8dd4-7f035639172c/bin/utaipan-verify-SwPr7d2a91/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 [2023-11-24 23:50:31,313 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 23:50:31,314 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:50:31,314 INFO L85 PathProgramCache]: Analyzing trace with hash 1212675783, now seen corresponding path program 1 times [2023-11-24 23:50:31,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-24 23:50:31,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1032598433] [2023-11-24 23:50:31,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:50:31,315 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 [2023-11-24 23:50:31,316 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b66a0aae-1f01-433d-8dd4-7f035639172c/bin/utaipan-verify-SwPr7d2a91/mathsat [2023-11-24 23:50:31,317 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b66a0aae-1f01-433d-8dd4-7f035639172c/bin/utaipan-verify-SwPr7d2a91/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) [2023-11-24 23:50:31,319 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b66a0aae-1f01-433d-8dd4-7f035639172c/bin/utaipan-verify-SwPr7d2a91/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 [2023-11-24 23:50:31,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:50:31,851 INFO L262 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-24 23:50:31,862 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:50:33,010 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 20 proven. 48 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-11-24 23:50:33,010 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 23:50:33,644 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2023-11-24 23:50:33,644 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-24 23:50:33,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1032598433] [2023-11-24 23:50:33,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1032598433] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 23:50:33,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [132237899] [2023-11-24 23:50:33,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:50:33,646 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-24 23:50:33,646 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b66a0aae-1f01-433d-8dd4-7f035639172c/bin/utaipan-verify-SwPr7d2a91/cvc4 [2023-11-24 23:50:33,651 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b66a0aae-1f01-433d-8dd4-7f035639172c/bin/utaipan-verify-SwPr7d2a91/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-24 23:50:33,695 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b66a0aae-1f01-433d-8dd4-7f035639172c/bin/utaipan-verify-SwPr7d2a91/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process [2023-11-24 23:50:34,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:50:34,945 INFO L262 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-24 23:50:34,952 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:50:35,427 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 9 proven. 27 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2023-11-24 23:50:35,427 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 23:50:35,779 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2023-11-24 23:50:35,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [132237899] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 23:50:35,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2090088422] [2023-11-24 23:50:35,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:50:35,780 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:50:35,780 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b66a0aae-1f01-433d-8dd4-7f035639172c/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:50:35,782 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b66a0aae-1f01-433d-8dd4-7f035639172c/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:50:35,789 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b66a0aae-1f01-433d-8dd4-7f035639172c/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-24 23:50:36,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:50:36,242 INFO L262 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-24 23:50:36,246 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:50:36,700 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 9 proven. 27 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2023-11-24 23:50:36,700 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 23:50:37,016 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2023-11-24 23:50:37,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2090088422] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 23:50:37,017 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2023-11-24 23:50:37,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 6, 6, 6, 6, 6] total 12 [2023-11-24 23:50:37,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98568284] [2023-11-24 23:50:37,018 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2023-11-24 23:50:37,019 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-24 23:50:37,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-24 23:50:37,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-24 23:50:37,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2023-11-24 23:50:37,021 INFO L87 Difference]: Start difference. First operand 83 states and 125 transitions. Second operand has 12 states, 12 states have (on average 4.416666666666667) internal successors, (53), 12 states have internal predecessors, (53), 3 states have call successors, (27), 3 states have call predecessors, (27), 6 states have return successors, (29), 2 states have call predecessors, (29), 3 states have call successors, (29) [2023-11-24 23:50:41,049 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-24 23:50:42,940 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.89s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-24 23:50:45,227 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-24 23:50:47,403 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-24 23:50:47,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:50:47,669 INFO L93 Difference]: Finished difference Result 142 states and 202 transitions. [2023-11-24 23:50:47,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-24 23:50:47,671 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.416666666666667) internal successors, (53), 12 states have internal predecessors, (53), 3 states have call successors, (27), 3 states have call predecessors, (27), 6 states have return successors, (29), 2 states have call predecessors, (29), 3 states have call successors, (29) Word has length 72 [2023-11-24 23:50:47,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:50:47,673 INFO L225 Difference]: With dead ends: 142 [2023-11-24 23:50:47,673 INFO L226 Difference]: Without dead ends: 100 [2023-11-24 23:50:47,675 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 436 GetRequests, 413 SyntacticMatches, 5 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=129, Invalid=251, Unknown=0, NotChecked=0, Total=380 [2023-11-24 23:50:47,676 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 141 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 155 mSolverCounterSat, 41 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 181 SdHoareTripleChecker+Invalid, 199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 155 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.2s IncrementalHoareTripleChecker+Time [2023-11-24 23:50:47,677 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 181 Invalid, 199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 155 Invalid, 3 Unknown, 0 Unchecked, 10.2s Time] [2023-11-24 23:50:47,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2023-11-24 23:50:47,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 99. [2023-11-24 23:50:47,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 72 states have (on average 1.3194444444444444) internal successors, (95), 72 states have internal predecessors, (95), 20 states have call successors, (20), 6 states have call predecessors, (20), 6 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-11-24 23:50:47,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 135 transitions. [2023-11-24 23:50:47,720 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 135 transitions. Word has length 72 [2023-11-24 23:50:47,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:50:47,722 INFO L495 AbstractCegarLoop]: Abstraction has 99 states and 135 transitions. [2023-11-24 23:50:47,722 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.416666666666667) internal successors, (53), 12 states have internal predecessors, (53), 3 states have call successors, (27), 3 states have call predecessors, (27), 6 states have return successors, (29), 2 states have call predecessors, (29), 3 states have call successors, (29) [2023-11-24 23:50:47,723 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 135 transitions. [2023-11-24 23:50:47,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-11-24 23:50:47,725 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:50:47,725 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:50:47,740 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b66a0aae-1f01-433d-8dd4-7f035639172c/bin/utaipan-verify-SwPr7d2a91/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)] Forceful destruction successful, exit code 0 [2023-11-24 23:50:47,940 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b66a0aae-1f01-433d-8dd4-7f035639172c/bin/utaipan-verify-SwPr7d2a91/cvc4 --incremental --print-success --lang smt (5)] Forceful destruction successful, exit code 0 [2023-11-24 23:50:48,156 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b66a0aae-1f01-433d-8dd4-7f035639172c/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-24 23:50:48,333 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b66a0aae-1f01-433d-8dd4-7f035639172c/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b66a0aae-1f01-433d-8dd4-7f035639172c/bin/utaipan-verify-SwPr7d2a91/cvc4 --incremental --print-success --lang smt,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b66a0aae-1f01-433d-8dd4-7f035639172c/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:50:48,333 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 23:50:48,334 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:50:48,334 INFO L85 PathProgramCache]: Analyzing trace with hash 1096892497, now seen corresponding path program 1 times [2023-11-24 23:50:48,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-24 23:50:48,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1701529272] [2023-11-24 23:50:48,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:50:48,335 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 [2023-11-24 23:50:48,335 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b66a0aae-1f01-433d-8dd4-7f035639172c/bin/utaipan-verify-SwPr7d2a91/mathsat [2023-11-24 23:50:48,337 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b66a0aae-1f01-433d-8dd4-7f035639172c/bin/utaipan-verify-SwPr7d2a91/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) [2023-11-24 23:50:48,341 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b66a0aae-1f01-433d-8dd4-7f035639172c/bin/utaipan-verify-SwPr7d2a91/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 (7)] Waiting until timeout for monitored process [2023-11-24 23:50:48,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:50:48,826 INFO L262 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-24 23:50:48,830 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:50:48,864 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2023-11-24 23:50:48,864 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:50:48,865 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-24 23:50:48,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1701529272] [2023-11-24 23:50:48,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1701529272] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:50:48,866 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:50:48,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 23:50:48,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917696038] [2023-11-24 23:50:48,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:50:48,867 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 23:50:48,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-24 23:50:48,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 23:50:48,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:50:48,869 INFO L87 Difference]: Start difference. First operand 99 states and 135 transitions. Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 1 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2023-11-24 23:50:50,642 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.76s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-24 23:50:52,839 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []