./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_50-while_file-59.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cf1a7837 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a656edc-b3f5-4e04-a2b0-84a439f74967/bin/utaipan-verify-NcY6lQBIFX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a656edc-b3f5-4e04-a2b0-84a439f74967/bin/utaipan-verify-NcY6lQBIFX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a656edc-b3f5-4e04-a2b0-84a439f74967/bin/utaipan-verify-NcY6lQBIFX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a656edc-b3f5-4e04-a2b0-84a439f74967/bin/utaipan-verify-NcY6lQBIFX/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_50-while_file-59.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a656edc-b3f5-4e04-a2b0-84a439f74967/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a656edc-b3f5-4e04-a2b0-84a439f74967/bin/utaipan-verify-NcY6lQBIFX --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 b76efa245cf05811296f1821b79f17cce14cc81fdc5d172c0831b55020eb32b3 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 00:56:42,554 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 00:56:42,638 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a656edc-b3f5-4e04-a2b0-84a439f74967/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-11-12 00:56:42,656 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 00:56:42,656 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 00:56:42,680 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 00:56:42,681 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 00:56:42,682 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 00:56:42,683 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 00:56:42,683 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 00:56:42,684 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-12 00:56:42,684 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-12 00:56:42,685 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-12 00:56:42,686 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-12 00:56:42,686 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-12 00:56:42,687 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-12 00:56:42,687 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-12 00:56:42,688 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-12 00:56:42,689 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-12 00:56:42,689 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-12 00:56:42,690 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-12 00:56:42,691 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-12 00:56:42,691 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 00:56:42,692 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 00:56:42,692 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 00:56:42,693 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 00:56:42,693 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 00:56:42,694 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 00:56:42,694 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 00:56:42,695 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 00:56:42,695 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 00:56:42,696 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 00:56:42,696 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 00:56:42,696 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 00:56:42,697 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 00:56:42,697 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 00:56:42,698 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:56:42,698 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 00:56:42,699 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 00:56:42,699 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 00:56:42,699 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-12 00:56:42,700 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 00:56:42,700 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 00:56:42,701 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-12 00:56:42,701 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 00:56:42,702 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_7a656edc-b3f5-4e04-a2b0-84a439f74967/bin/utaipan-verify-NcY6lQBIFX/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a656edc-b3f5-4e04-a2b0-84a439f74967/bin/utaipan-verify-NcY6lQBIFX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b76efa245cf05811296f1821b79f17cce14cc81fdc5d172c0831b55020eb32b3 [2023-11-12 00:56:42,999 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 00:56:43,034 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 00:56:43,037 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 00:56:43,038 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 00:56:43,038 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 00:56:43,041 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a656edc-b3f5-4e04-a2b0-84a439f74967/bin/utaipan-verify-NcY6lQBIFX/../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_50-while_file-59.i [2023-11-12 00:56:46,073 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 00:56:46,334 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 00:56:46,335 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a656edc-b3f5-4e04-a2b0-84a439f74967/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_50-while_file-59.i [2023-11-12 00:56:46,344 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a656edc-b3f5-4e04-a2b0-84a439f74967/bin/utaipan-verify-NcY6lQBIFX/data/4f90f4c82/a79d762805c245fcb0ffd0b4167d085a/FLAG9481f4c93 [2023-11-12 00:56:46,367 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a656edc-b3f5-4e04-a2b0-84a439f74967/bin/utaipan-verify-NcY6lQBIFX/data/4f90f4c82/a79d762805c245fcb0ffd0b4167d085a [2023-11-12 00:56:46,370 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 00:56:46,372 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 00:56:46,373 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 00:56:46,373 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 00:56:46,385 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 00:56:46,386 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:56:46" (1/1) ... [2023-11-12 00:56:46,387 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@67456806 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:56:46, skipping insertion in model container [2023-11-12 00:56:46,388 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:56:46" (1/1) ... [2023-11-12 00:56:46,437 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 00:56:46,641 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_7a656edc-b3f5-4e04-a2b0-84a439f74967/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_50-while_file-59.i[915,928] [2023-11-12 00:56:46,697 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:56:46,712 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 00:56:46,725 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_7a656edc-b3f5-4e04-a2b0-84a439f74967/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_50-while_file-59.i[915,928] [2023-11-12 00:56:46,758 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:56:46,775 INFO L206 MainTranslator]: Completed translation [2023-11-12 00:56:46,776 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:56:46 WrapperNode [2023-11-12 00:56:46,776 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 00:56:46,777 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 00:56:46,778 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 00:56:46,778 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 00:56:46,786 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:56:46" (1/1) ... [2023-11-12 00:56:46,802 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:56:46" (1/1) ... [2023-11-12 00:56:46,865 INFO L138 Inliner]: procedures = 26, calls = 27, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 129 [2023-11-12 00:56:46,865 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 00:56:46,866 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 00:56:46,866 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 00:56:46,867 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 00:56:46,880 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:56:46" (1/1) ... [2023-11-12 00:56:46,886 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:56:46" (1/1) ... [2023-11-12 00:56:46,890 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:56:46" (1/1) ... [2023-11-12 00:56:46,890 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:56:46" (1/1) ... [2023-11-12 00:56:46,903 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:56:46" (1/1) ... [2023-11-12 00:56:46,907 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:56:46" (1/1) ... [2023-11-12 00:56:46,911 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:56:46" (1/1) ... [2023-11-12 00:56:46,914 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:56:46" (1/1) ... [2023-11-12 00:56:46,920 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 00:56:46,921 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 00:56:46,921 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 00:56:46,921 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 00:56:46,922 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:56:46" (1/1) ... [2023-11-12 00:56:46,938 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:56:46,953 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a656edc-b3f5-4e04-a2b0-84a439f74967/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:56:46,973 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a656edc-b3f5-4e04-a2b0-84a439f74967/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 00:56:46,996 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a656edc-b3f5-4e04-a2b0-84a439f74967/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 00:56:47,020 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 00:56:47,021 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-12 00:56:47,021 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-12 00:56:47,021 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 00:56:47,021 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 00:56:47,022 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 00:56:47,143 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 00:56:47,146 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 00:56:47,621 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 00:56:47,908 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 00:56:47,908 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-12 00:56:47,911 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:56:47 BoogieIcfgContainer [2023-11-12 00:56:47,912 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 00:56:47,915 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 00:56:47,916 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 00:56:47,919 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 00:56:47,920 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 12:56:46" (1/3) ... [2023-11-12 00:56:47,921 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e593b20 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:56:47, skipping insertion in model container [2023-11-12 00:56:47,922 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:56:46" (2/3) ... [2023-11-12 00:56:47,923 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e593b20 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:56:47, skipping insertion in model container [2023-11-12 00:56:47,923 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:56:47" (3/3) ... [2023-11-12 00:56:47,925 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_loopvsstraightlinecode_50-while_file-59.i [2023-11-12 00:56:47,945 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 00:56:47,945 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-12 00:56:48,013 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 00:56:48,021 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;@132d12c1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-12 00:56:48,021 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-12 00:56:48,026 INFO L276 IsEmpty]: Start isEmpty. Operand has 31 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 15 states have internal predecessors, (17), 14 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2023-11-12 00:56:48,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-11-12 00:56:48,037 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:56:48,038 INFO L195 NwaCegarLoop]: trace histogram [14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:56:48,038 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:56:48,044 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:56:48,044 INFO L85 PathProgramCache]: Analyzing trace with hash 113476280, now seen corresponding path program 1 times [2023-11-12 00:56:48,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:56:48,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487231594] [2023-11-12 00:56:48,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:56:48,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:56:48,295 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 00:56:48,296 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [76039751] [2023-11-12 00:56:48,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:56:48,297 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:56:48,297 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a656edc-b3f5-4e04-a2b0-84a439f74967/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:56:48,320 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a656edc-b3f5-4e04-a2b0-84a439f74967/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 00:56:48,342 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a656edc-b3f5-4e04-a2b0-84a439f74967/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-12 00:56:48,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 00:56:48,764 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-12 00:56:48,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 00:56:48,972 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-11-12 00:56:48,975 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-12 00:56:48,976 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-12 00:56:48,992 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a656edc-b3f5-4e04-a2b0-84a439f74967/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-12 00:56:49,186 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a656edc-b3f5-4e04-a2b0-84a439f74967/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:56:49,190 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-11-12 00:56:49,194 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-11-12 00:56:49,304 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 12:56:49 BoogieIcfgContainer [2023-11-12 00:56:49,305 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-12 00:56:49,305 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-12 00:56:49,305 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-12 00:56:49,306 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-12 00:56:49,307 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:56:47" (3/4) ... [2023-11-12 00:56:49,309 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-12 00:56:49,311 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-12 00:56:49,312 INFO L158 Benchmark]: Toolchain (without parser) took 2940.12ms. Allocated memory is still 155.2MB. Free memory was 121.5MB in the beginning and 103.7MB in the end (delta: 17.8MB). Peak memory consumption was 17.8MB. Max. memory is 16.1GB. [2023-11-12 00:56:49,316 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 121.6MB. Free memory is still 89.7MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-12 00:56:49,317 INFO L158 Benchmark]: CACSL2BoogieTranslator took 403.46ms. Allocated memory is still 155.2MB. Free memory was 121.5MB in the beginning and 116.9MB in the end (delta: 4.6MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2023-11-12 00:56:49,318 INFO L158 Benchmark]: Boogie Procedure Inliner took 88.11ms. Allocated memory is still 155.2MB. Free memory was 116.9MB in the beginning and 113.2MB in the end (delta: 3.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-12 00:56:49,318 INFO L158 Benchmark]: Boogie Preprocessor took 53.78ms. Allocated memory is still 155.2MB. Free memory was 113.2MB in the beginning and 111.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-12 00:56:49,319 INFO L158 Benchmark]: RCFGBuilder took 991.16ms. Allocated memory is still 155.2MB. Free memory was 111.0MB in the beginning and 64.5MB in the end (delta: 46.5MB). Peak memory consumption was 46.1MB. Max. memory is 16.1GB. [2023-11-12 00:56:49,320 INFO L158 Benchmark]: TraceAbstraction took 1389.38ms. Allocated memory is still 155.2MB. Free memory was 63.7MB in the beginning and 103.7MB in the end (delta: -40.0MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-12 00:56:49,320 INFO L158 Benchmark]: Witness Printer took 5.51ms. Allocated memory is still 155.2MB. Free memory is still 103.7MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-12 00:56:49,323 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 121.6MB. Free memory is still 89.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 403.46ms. Allocated memory is still 155.2MB. Free memory was 121.5MB in the beginning and 116.9MB in the end (delta: 4.6MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 88.11ms. Allocated memory is still 155.2MB. Free memory was 116.9MB in the beginning and 113.2MB in the end (delta: 3.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 53.78ms. Allocated memory is still 155.2MB. Free memory was 113.2MB in the beginning and 111.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 991.16ms. Allocated memory is still 155.2MB. Free memory was 111.0MB in the beginning and 64.5MB in the end (delta: 46.5MB). Peak memory consumption was 46.1MB. Max. memory is 16.1GB. * TraceAbstraction took 1389.38ms. Allocated memory is still 155.2MB. Free memory was 63.7MB in the beginning and 103.7MB in the end (delta: -40.0MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 5.51ms. Allocated memory is still 155.2MB. Free memory is still 103.7MB. 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 48, overapproximation of someBinaryArithmeticDOUBLEoperation at line 50. Possible FailurePath: [L21] unsigned char isInitial = 0; [L22] unsigned short int var_1_1 = 1; [L23] unsigned char var_1_4 = 25; [L24] unsigned short int var_1_5 = 0; [L25] unsigned short int var_1_6 = 62100; [L26] unsigned short int var_1_7 = 27651; [L27] double var_1_8 = 128.9; [L28] double var_1_10 = 16.5; [L29] double var_1_11 = 25.5; [L30] double var_1_12 = 199.75; [L31] unsigned char var_1_13 = 2; [L32] unsigned char var_1_14 = 1; [L33] unsigned char var_1_15 = 1; [L34] unsigned char var_1_16 = 1; [L35] unsigned short int var_1_17 = 32; [L36] unsigned char var_1_18 = 1; [L37] unsigned long int var_1_19 = 1; [L38] unsigned short int last_1_var_1_5 = 0; [L39] unsigned char last_1_var_1_15 = 1; [L40] unsigned char last_1_var_1_18 = 1; [L41] unsigned long int last_1_var_1_19 = 1; [L133] isInitial = 1 [L134] FCALL initially() [L135] COND TRUE 1 [L136] CALL updateLastVariables() [L123] last_1_var_1_5 = var_1_5 [L124] last_1_var_1_15 = var_1_15 [L125] last_1_var_1_18 = var_1_18 [L126] last_1_var_1_19 = var_1_19 [L136] RET updateLastVariables() [L137] CALL updateVariables() [L99] var_1_4 = __VERIFIER_nondet_uchar() [L100] CALL assume_abort_if_not(var_1_4 >= 0) VAL [\old(cond)=1, isInitial=1, last_1_var_1_15=1, last_1_var_1_18=1, last_1_var_1_19=1, last_1_var_1_5=0, var_1_10=33/2, var_1_11=51/2, var_1_12=799/4, var_1_13=2, var_1_14=1, var_1_15=1, var_1_16=1, var_1_17=32, var_1_18=1, var_1_19=1, var_1_1=1, var_1_5=0, var_1_6=62100, var_1_7=27651, var_1_8=1289/10] [L20] COND FALSE !(!cond) [L100] RET assume_abort_if_not(var_1_4 >= 0) VAL [isInitial=1, last_1_var_1_15=1, last_1_var_1_18=1, last_1_var_1_19=1, last_1_var_1_5=0, var_1_10=33/2, var_1_11=51/2, var_1_12=799/4, var_1_13=2, var_1_14=1, var_1_15=1, var_1_16=1, var_1_17=32, var_1_18=1, var_1_19=1, var_1_1=1, var_1_5=0, var_1_6=62100, var_1_7=27651, var_1_8=1289/10] [L101] CALL assume_abort_if_not(var_1_4 <= 255) VAL [\old(cond)=1, isInitial=1, last_1_var_1_15=1, last_1_var_1_18=1, last_1_var_1_19=1, last_1_var_1_5=0, var_1_10=33/2, var_1_11=51/2, var_1_12=799/4, var_1_13=2, var_1_14=1, var_1_15=1, var_1_16=1, var_1_17=32, var_1_18=1, var_1_19=1, var_1_1=1, var_1_5=0, var_1_6=62100, var_1_7=27651, var_1_8=1289/10] [L20] COND FALSE !(!cond) [L101] RET assume_abort_if_not(var_1_4 <= 255) VAL [isInitial=1, last_1_var_1_15=1, last_1_var_1_18=1, last_1_var_1_19=1, last_1_var_1_5=0, var_1_10=33/2, var_1_11=51/2, var_1_12=799/4, var_1_13=2, var_1_14=1, var_1_15=1, var_1_16=1, var_1_17=32, var_1_18=1, var_1_19=1, var_1_1=1, var_1_5=0, var_1_6=62100, var_1_7=27651, var_1_8=1289/10] [L102] CALL assume_abort_if_not(var_1_4 != 0) VAL [\old(cond)=1, isInitial=1, last_1_var_1_15=1, last_1_var_1_18=1, last_1_var_1_19=1, last_1_var_1_5=0, var_1_10=33/2, var_1_11=51/2, var_1_12=799/4, var_1_13=2, var_1_14=1, var_1_15=1, var_1_16=1, var_1_17=32, var_1_18=1, var_1_19=1, var_1_1=1, var_1_4=16, var_1_5=0, var_1_6=62100, var_1_7=27651, var_1_8=1289/10] [L20] COND FALSE !(!cond) [L102] RET assume_abort_if_not(var_1_4 != 0) VAL [isInitial=1, last_1_var_1_15=1, last_1_var_1_18=1, last_1_var_1_19=1, last_1_var_1_5=0, var_1_10=33/2, var_1_11=51/2, var_1_12=799/4, var_1_13=2, var_1_14=1, var_1_15=1, var_1_16=1, var_1_17=32, var_1_18=1, var_1_19=1, var_1_1=1, var_1_4=16, var_1_5=0, var_1_6=62100, var_1_7=27651, var_1_8=1289/10] [L103] var_1_6 = __VERIFIER_nondet_ushort() [L104] CALL assume_abort_if_not(var_1_6 >= 32767) VAL [\old(cond)=1, isInitial=1, last_1_var_1_15=1, last_1_var_1_18=1, last_1_var_1_19=1, last_1_var_1_5=0, var_1_10=33/2, var_1_11=51/2, var_1_12=799/4, var_1_13=2, var_1_14=1, var_1_15=1, var_1_16=1, var_1_17=32, var_1_18=1, var_1_19=1, var_1_1=1, var_1_4=16, var_1_5=0, var_1_6=32767, var_1_7=27651, var_1_8=1289/10] [L20] COND FALSE !(!cond) [L104] RET assume_abort_if_not(var_1_6 >= 32767) VAL [isInitial=1, last_1_var_1_15=1, last_1_var_1_18=1, last_1_var_1_19=1, last_1_var_1_5=0, var_1_10=33/2, var_1_11=51/2, var_1_12=799/4, var_1_13=2, var_1_14=1, var_1_15=1, var_1_16=1, var_1_17=32, var_1_18=1, var_1_19=1, var_1_1=1, var_1_4=16, var_1_5=0, var_1_6=32767, var_1_7=27651, var_1_8=1289/10] [L105] CALL assume_abort_if_not(var_1_6 <= 65534) VAL [\old(cond)=1, isInitial=1, last_1_var_1_15=1, last_1_var_1_18=1, last_1_var_1_19=1, last_1_var_1_5=0, var_1_10=33/2, var_1_11=51/2, var_1_12=799/4, var_1_13=2, var_1_14=1, var_1_15=1, var_1_16=1, var_1_17=32, var_1_18=1, var_1_19=1, var_1_1=1, var_1_4=16, var_1_5=0, var_1_6=32767, var_1_7=27651, var_1_8=1289/10] [L20] COND FALSE !(!cond) [L105] RET assume_abort_if_not(var_1_6 <= 65534) VAL [isInitial=1, last_1_var_1_15=1, last_1_var_1_18=1, last_1_var_1_19=1, last_1_var_1_5=0, var_1_10=33/2, var_1_11=51/2, var_1_12=799/4, var_1_13=2, var_1_14=1, var_1_15=1, var_1_16=1, var_1_17=32, var_1_18=1, var_1_19=1, var_1_1=1, var_1_4=16, var_1_5=0, var_1_6=32767, var_1_7=27651, var_1_8=1289/10] [L106] var_1_7 = __VERIFIER_nondet_ushort() [L107] CALL assume_abort_if_not(var_1_7 >= 16383) VAL [\old(cond)=1, isInitial=1, last_1_var_1_15=1, last_1_var_1_18=1, last_1_var_1_19=1, last_1_var_1_5=0, var_1_10=33/2, var_1_11=51/2, var_1_12=799/4, var_1_13=2, var_1_14=1, var_1_15=1, var_1_16=1, var_1_17=32, var_1_18=1, var_1_19=1, var_1_1=1, var_1_4=16, var_1_5=0, var_1_6=32767, var_1_7=16383, var_1_8=1289/10] [L20] COND FALSE !(!cond) [L107] RET assume_abort_if_not(var_1_7 >= 16383) VAL [isInitial=1, last_1_var_1_15=1, last_1_var_1_18=1, last_1_var_1_19=1, last_1_var_1_5=0, var_1_10=33/2, var_1_11=51/2, var_1_12=799/4, var_1_13=2, var_1_14=1, var_1_15=1, var_1_16=1, var_1_17=32, var_1_18=1, var_1_19=1, var_1_1=1, var_1_4=16, var_1_5=0, var_1_6=32767, var_1_7=16383, var_1_8=1289/10] [L108] CALL assume_abort_if_not(var_1_7 <= 32767) VAL [\old(cond)=1, isInitial=1, last_1_var_1_15=1, last_1_var_1_18=1, last_1_var_1_19=1, last_1_var_1_5=0, var_1_10=33/2, var_1_11=51/2, var_1_12=799/4, var_1_13=2, var_1_14=1, var_1_15=1, var_1_16=1, var_1_17=32, var_1_18=1, var_1_19=1, var_1_1=1, var_1_4=16, var_1_5=0, var_1_6=32767, var_1_7=16383, var_1_8=1289/10] [L20] COND FALSE !(!cond) [L108] RET assume_abort_if_not(var_1_7 <= 32767) VAL [isInitial=1, last_1_var_1_15=1, last_1_var_1_18=1, last_1_var_1_19=1, last_1_var_1_5=0, var_1_10=33/2, var_1_11=51/2, var_1_12=799/4, var_1_13=2, var_1_14=1, var_1_15=1, var_1_16=1, var_1_17=32, var_1_18=1, var_1_19=1, var_1_1=1, var_1_4=16, var_1_5=0, var_1_6=32767, var_1_7=16383, var_1_8=1289/10] [L109] var_1_10 = __VERIFIER_nondet_double() [L110] 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_15=1, last_1_var_1_18=1, last_1_var_1_19=1, last_1_var_1_5=0, var_1_10=2, var_1_11=51/2, var_1_12=799/4, var_1_13=2, var_1_14=1, var_1_15=1, var_1_16=1, var_1_17=32, var_1_18=1, var_1_19=1, var_1_1=1, var_1_4=16, var_1_5=0, var_1_6=32767, var_1_7=16383, var_1_8=1289/10] [L20] COND FALSE !(!cond) [L110] 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_15=1, last_1_var_1_18=1, last_1_var_1_19=1, last_1_var_1_5=0, var_1_10=2, var_1_11=51/2, var_1_12=799/4, var_1_13=2, var_1_14=1, var_1_15=1, var_1_16=1, var_1_17=32, var_1_18=1, var_1_19=1, var_1_1=1, var_1_4=16, var_1_5=0, var_1_6=32767, var_1_7=16383, var_1_8=1289/10] [L111] var_1_11 = __VERIFIER_nondet_double() [L112] CALL assume_abort_if_not((var_1_11 >= -461168.6018427382800e+13F && var_1_11 <= -1.0e-20F) || (var_1_11 <= 4611686.018427382800e+12F && var_1_11 >= 1.0e-20F )) VAL [\old(cond)=1, isInitial=1, last_1_var_1_15=1, last_1_var_1_18=1, last_1_var_1_19=1, last_1_var_1_5=0, var_1_10=2, var_1_11=3, var_1_12=799/4, var_1_13=2, var_1_14=1, var_1_15=1, var_1_16=1, var_1_17=32, var_1_18=1, var_1_19=1, var_1_1=1, var_1_4=16, var_1_5=0, var_1_6=32767, var_1_7=16383, var_1_8=1289/10] [L20] COND FALSE !(!cond) [L112] RET assume_abort_if_not((var_1_11 >= -461168.6018427382800e+13F && var_1_11 <= -1.0e-20F) || (var_1_11 <= 4611686.018427382800e+12F && var_1_11 >= 1.0e-20F )) VAL [isInitial=1, last_1_var_1_15=1, last_1_var_1_18=1, last_1_var_1_19=1, last_1_var_1_5=0, var_1_10=2, var_1_11=3, var_1_12=799/4, var_1_13=2, var_1_14=1, var_1_15=1, var_1_16=1, var_1_17=32, var_1_18=1, var_1_19=1, var_1_1=1, var_1_4=16, var_1_5=0, var_1_6=32767, var_1_7=16383, var_1_8=1289/10] [L113] var_1_12 = __VERIFIER_nondet_double() [L114] CALL assume_abort_if_not((var_1_12 >= -461168.6018427382800e+13F && var_1_12 <= -1.0e-20F) || (var_1_12 <= 4611686.018427382800e+12F && var_1_12 >= 1.0e-20F )) VAL [\old(cond)=1, isInitial=1, last_1_var_1_15=1, last_1_var_1_18=1, last_1_var_1_19=1, last_1_var_1_5=0, var_1_10=2, var_1_11=3, var_1_12=4, var_1_13=2, var_1_14=1, var_1_15=1, var_1_16=1, var_1_17=32, var_1_18=1, var_1_19=1, var_1_1=1, var_1_4=16, var_1_5=0, var_1_6=32767, var_1_7=16383, var_1_8=1289/10] [L20] COND FALSE !(!cond) [L114] RET assume_abort_if_not((var_1_12 >= -461168.6018427382800e+13F && var_1_12 <= -1.0e-20F) || (var_1_12 <= 4611686.018427382800e+12F && var_1_12 >= 1.0e-20F )) VAL [isInitial=1, last_1_var_1_15=1, last_1_var_1_18=1, last_1_var_1_19=1, last_1_var_1_5=0, var_1_10=2, var_1_11=3, var_1_12=4, var_1_13=2, var_1_14=1, var_1_15=1, var_1_16=1, var_1_17=32, var_1_18=1, var_1_19=1, var_1_1=1, var_1_4=16, var_1_5=0, var_1_6=32767, var_1_7=16383, var_1_8=1289/10] [L115] var_1_14 = __VERIFIER_nondet_uchar() [L116] CALL assume_abort_if_not(var_1_14 >= 0) VAL [\old(cond)=1, isInitial=1, last_1_var_1_15=1, last_1_var_1_18=1, last_1_var_1_19=1, last_1_var_1_5=0, var_1_10=2, var_1_11=3, var_1_12=4, var_1_13=2, var_1_14=254, var_1_15=1, var_1_16=1, var_1_17=32, var_1_18=1, var_1_19=1, var_1_1=1, var_1_4=16, var_1_5=0, var_1_6=32767, var_1_7=16383, var_1_8=1289/10] [L20] COND FALSE !(!cond) [L116] RET assume_abort_if_not(var_1_14 >= 0) VAL [isInitial=1, last_1_var_1_15=1, last_1_var_1_18=1, last_1_var_1_19=1, last_1_var_1_5=0, var_1_10=2, var_1_11=3, var_1_12=4, var_1_13=2, var_1_14=254, var_1_15=1, var_1_16=1, var_1_17=32, var_1_18=1, var_1_19=1, var_1_1=1, var_1_4=16, var_1_5=0, var_1_6=32767, var_1_7=16383, var_1_8=1289/10] [L117] CALL assume_abort_if_not(var_1_14 <= 254) VAL [\old(cond)=1, isInitial=1, last_1_var_1_15=1, last_1_var_1_18=1, last_1_var_1_19=1, last_1_var_1_5=0, var_1_10=2, var_1_11=3, var_1_12=4, var_1_13=2, var_1_14=254, var_1_15=1, var_1_16=1, var_1_17=32, var_1_18=1, var_1_19=1, var_1_1=1, var_1_4=16, var_1_5=0, var_1_6=32767, var_1_7=16383, var_1_8=1289/10] [L20] COND FALSE !(!cond) [L117] RET assume_abort_if_not(var_1_14 <= 254) VAL [isInitial=1, last_1_var_1_15=1, last_1_var_1_18=1, last_1_var_1_19=1, last_1_var_1_5=0, var_1_10=2, var_1_11=3, var_1_12=4, var_1_13=2, var_1_14=254, var_1_15=1, var_1_16=1, var_1_17=32, var_1_18=1, var_1_19=1, var_1_1=1, var_1_4=16, var_1_5=0, var_1_6=32767, var_1_7=16383, var_1_8=1289/10] [L118] var_1_16 = __VERIFIER_nondet_uchar() [L119] CALL assume_abort_if_not(var_1_16 >= 1) VAL [\old(cond)=1, isInitial=1, last_1_var_1_15=1, last_1_var_1_18=1, last_1_var_1_19=1, last_1_var_1_5=0, var_1_10=2, var_1_11=3, var_1_12=4, var_1_13=2, var_1_14=254, var_1_15=1, var_1_16=1, var_1_17=32, var_1_18=1, var_1_19=1, var_1_1=1, var_1_4=16, var_1_5=0, var_1_6=32767, var_1_7=16383, var_1_8=1289/10] [L20] COND FALSE !(!cond) [L119] RET assume_abort_if_not(var_1_16 >= 1) VAL [isInitial=1, last_1_var_1_15=1, last_1_var_1_18=1, last_1_var_1_19=1, last_1_var_1_5=0, var_1_10=2, var_1_11=3, var_1_12=4, var_1_13=2, var_1_14=254, var_1_15=1, var_1_16=1, var_1_17=32, var_1_18=1, var_1_19=1, var_1_1=1, var_1_4=16, var_1_5=0, var_1_6=32767, var_1_7=16383, var_1_8=1289/10] [L120] CALL assume_abort_if_not(var_1_16 <= 1) VAL [\old(cond)=1, isInitial=1, last_1_var_1_15=1, last_1_var_1_18=1, last_1_var_1_19=1, last_1_var_1_5=0, var_1_10=2, var_1_11=3, var_1_12=4, var_1_13=2, var_1_14=254, var_1_15=1, var_1_16=1, var_1_17=32, var_1_18=1, var_1_19=1, var_1_1=1, var_1_4=16, var_1_5=0, var_1_6=32767, var_1_7=16383, var_1_8=1289/10] [L20] COND FALSE !(!cond) [L120] RET assume_abort_if_not(var_1_16 <= 1) VAL [isInitial=1, last_1_var_1_15=1, last_1_var_1_18=1, last_1_var_1_19=1, last_1_var_1_5=0, var_1_10=2, var_1_11=3, var_1_12=4, var_1_13=2, var_1_14=254, var_1_15=1, var_1_16=1, var_1_17=32, var_1_18=1, var_1_19=1, var_1_1=1, var_1_4=16, var_1_5=0, var_1_6=32767, var_1_7=16383, var_1_8=1289/10] [L137] RET updateVariables() [L138] CALL step() [L45] unsigned char stepLocal_3 = last_1_var_1_19 < var_1_6; [L46] COND TRUE \read(last_1_var_1_18) [L47] COND TRUE (! last_1_var_1_15) || stepLocal_3 [L48] var_1_8 = ((((127.25) > (var_1_10)) ? (127.25) : (var_1_10))) [L55] COND FALSE !(var_1_12 != var_1_8) [L58] var_1_15 = var_1_16 [L60] var_1_17 = var_1_4 [L61] var_1_18 = var_1_16 [L62] var_1_19 = var_1_4 [L63] unsigned short int stepLocal_1 = var_1_17; [L64] unsigned char stepLocal_0 = var_1_17 != (16 / var_1_4); [L65] COND TRUE stepLocal_0 && var_1_15 [L66] COND FALSE !(stepLocal_1 > var_1_4) [L69] COND TRUE \read(var_1_15) [L70] var_1_1 = var_1_17 [L78] unsigned short int stepLocal_2 = var_1_17; [L79] COND FALSE !(stepLocal_2 < last_1_var_1_5) [L82] COND FALSE !(! var_1_15) [L86] unsigned short int stepLocal_5 = var_1_6; [L87] unsigned short int stepLocal_4 = var_1_5; [L88] COND TRUE stepLocal_4 != ((var_1_6 / var_1_4) * ((((var_1_5) > (var_1_19)) ? (var_1_5) : (var_1_19)))) [L89] COND TRUE var_1_5 <= stepLocal_5 [L90] var_1_13 = 32 [L138] RET step() [L139] CALL, EXPR property() [L129-L130] return (((((((((var_1_17 != (16 / var_1_4)) && var_1_15) ? ((var_1_17 > var_1_4) ? (var_1_1 == ((unsigned short int) (var_1_4 + var_1_17))) : (var_1_15 ? (var_1_1 == ((unsigned short int) var_1_17)) : (var_1_1 == ((unsigned short int) var_1_4)))) : (var_1_1 == ((unsigned short int) var_1_17))) && ((var_1_17 < last_1_var_1_5) ? (var_1_5 == ((unsigned short int) (var_1_6 - (var_1_7 - last_1_var_1_5)))) : ((! var_1_15) ? (var_1_5 == ((unsigned short int) ((((last_1_var_1_5) > ((var_1_7 + var_1_4))) ? (last_1_var_1_5) : ((var_1_7 + var_1_4)))))) : 1))) && (last_1_var_1_18 ? (((! last_1_var_1_15) || (last_1_var_1_19 < var_1_6)) ? (var_1_8 == ((double) ((((127.25) > (var_1_10)) ? (127.25) : (var_1_10))))) : (var_1_8 == ((double) (var_1_11 + var_1_12)))) : (var_1_8 == ((double) var_1_11)))) && ((var_1_5 != ((var_1_6 / var_1_4) * ((((var_1_5) > (var_1_19)) ? (var_1_5) : (var_1_19))))) ? ((var_1_5 <= var_1_6) ? (var_1_13 == ((unsigned char) 32)) : (var_1_13 == ((unsigned char) var_1_14))) : (var_1_13 == ((unsigned char) var_1_14)))) && ((var_1_12 != var_1_8) ? (var_1_15 == ((unsigned char) (! var_1_16))) : (var_1_15 == ((unsigned char) var_1_16)))) && (var_1_17 == ((unsigned short int) var_1_4))) && (var_1_18 == ((unsigned char) var_1_16))) && (var_1_19 == ((unsigned long int) var_1_4)) ; [L139] RET, EXPR property() [L139] CALL __VERIFIER_assert(property()) [L19] COND TRUE !(cond) VAL [\old(cond)=0, cond=0, isInitial=1, last_1_var_1_15=1, last_1_var_1_18=1, last_1_var_1_19=1, last_1_var_1_5=0, var_1_10=2, var_1_11=3, var_1_12=4, var_1_13=32, var_1_14=254, var_1_15=1, var_1_16=1, var_1_17=16, var_1_18=1, var_1_19=16, var_1_1=16, var_1_4=16, var_1_5=0, var_1_6=32767, var_1_7=16383, var_1_8=509/4] [L19] reach_error() VAL [\old(cond)=0, cond=0, isInitial=1, last_1_var_1_15=1, last_1_var_1_18=1, last_1_var_1_19=1, last_1_var_1_5=0, var_1_10=2, var_1_11=3, var_1_12=4, var_1_13=32, var_1_14=254, var_1_15=1, var_1_16=1, var_1_17=16, var_1_18=1, var_1_19=16, var_1_1=16, var_1_4=16, var_1_5=0, var_1_6=32767, var_1_7=16383, var_1_8=509/4] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 31 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.2s, OverallIterations: 1, TraceHistogramMax: 14, 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=31occurred 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, 0.5s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 54 NumberOfCodeBlocks, 54 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 [2023-11-12 00:56:49,356 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a656edc-b3f5-4e04-a2b0-84a439f74967/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a656edc-b3f5-4e04-a2b0-84a439f74967/bin/utaipan-verify-NcY6lQBIFX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a656edc-b3f5-4e04-a2b0-84a439f74967/bin/utaipan-verify-NcY6lQBIFX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a656edc-b3f5-4e04-a2b0-84a439f74967/bin/utaipan-verify-NcY6lQBIFX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a656edc-b3f5-4e04-a2b0-84a439f74967/bin/utaipan-verify-NcY6lQBIFX/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_50-while_file-59.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a656edc-b3f5-4e04-a2b0-84a439f74967/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a656edc-b3f5-4e04-a2b0-84a439f74967/bin/utaipan-verify-NcY6lQBIFX --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 b76efa245cf05811296f1821b79f17cce14cc81fdc5d172c0831b55020eb32b3 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 00:56:51,998 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 00:56:52,116 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a656edc-b3f5-4e04-a2b0-84a439f74967/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2023-11-12 00:56:52,124 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 00:56:52,125 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 00:56:52,172 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 00:56:52,173 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 00:56:52,174 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 00:56:52,175 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 00:56:52,180 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 00:56:52,180 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-12 00:56:52,181 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-12 00:56:52,181 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-12 00:56:52,183 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-12 00:56:52,184 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-12 00:56:52,184 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-12 00:56:52,186 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 00:56:52,186 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 00:56:52,187 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 00:56:52,188 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 00:56:52,188 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 00:56:52,189 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 00:56:52,189 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 00:56:52,190 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 00:56:52,190 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-12 00:56:52,191 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-12 00:56:52,191 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-12 00:56:52,192 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 00:56:52,192 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 00:56:52,193 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 00:56:52,194 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 00:56:52,195 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-12 00:56:52,195 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 00:56:52,195 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:56:52,196 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 00:56:52,196 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 00:56:52,197 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 00:56:52,197 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-11-12 00:56:52,197 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-12 00:56:52,198 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 00:56:52,199 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-12 00:56:52,199 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 00:56:52,200 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_7a656edc-b3f5-4e04-a2b0-84a439f74967/bin/utaipan-verify-NcY6lQBIFX/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a656edc-b3f5-4e04-a2b0-84a439f74967/bin/utaipan-verify-NcY6lQBIFX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b76efa245cf05811296f1821b79f17cce14cc81fdc5d172c0831b55020eb32b3 [2023-11-12 00:56:52,650 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 00:56:52,683 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 00:56:52,686 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 00:56:52,687 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 00:56:52,688 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 00:56:52,689 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a656edc-b3f5-4e04-a2b0-84a439f74967/bin/utaipan-verify-NcY6lQBIFX/../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_50-while_file-59.i [2023-11-12 00:56:55,834 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 00:56:56,151 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 00:56:56,152 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a656edc-b3f5-4e04-a2b0-84a439f74967/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_50-while_file-59.i [2023-11-12 00:56:56,173 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a656edc-b3f5-4e04-a2b0-84a439f74967/bin/utaipan-verify-NcY6lQBIFX/data/97212ff2c/6e4ddea224c447d781046bdbae115205/FLAGa2536c64a [2023-11-12 00:56:56,188 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a656edc-b3f5-4e04-a2b0-84a439f74967/bin/utaipan-verify-NcY6lQBIFX/data/97212ff2c/6e4ddea224c447d781046bdbae115205 [2023-11-12 00:56:56,191 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 00:56:56,192 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 00:56:56,194 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 00:56:56,194 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 00:56:56,199 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 00:56:56,200 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:56:56" (1/1) ... [2023-11-12 00:56:56,201 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@40dfe7e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:56:56, skipping insertion in model container [2023-11-12 00:56:56,202 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:56:56" (1/1) ... [2023-11-12 00:56:56,231 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 00:56:56,454 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_7a656edc-b3f5-4e04-a2b0-84a439f74967/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_50-while_file-59.i[915,928] [2023-11-12 00:56:56,546 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:56:56,574 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 00:56:56,597 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_7a656edc-b3f5-4e04-a2b0-84a439f74967/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_50-while_file-59.i[915,928] [2023-11-12 00:56:56,644 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:56:56,679 INFO L206 MainTranslator]: Completed translation [2023-11-12 00:56:56,679 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:56:56 WrapperNode [2023-11-12 00:56:56,680 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 00:56:56,682 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 00:56:56,682 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 00:56:56,683 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 00:56:56,691 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:56:56" (1/1) ... [2023-11-12 00:56:56,717 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:56:56" (1/1) ... [2023-11-12 00:56:56,765 INFO L138 Inliner]: procedures = 27, calls = 27, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 129 [2023-11-12 00:56:56,767 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 00:56:56,768 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 00:56:56,769 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 00:56:56,769 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 00:56:56,779 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:56:56" (1/1) ... [2023-11-12 00:56:56,780 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:56:56" (1/1) ... [2023-11-12 00:56:56,796 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:56:56" (1/1) ... [2023-11-12 00:56:56,806 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:56:56" (1/1) ... [2023-11-12 00:56:56,817 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:56:56" (1/1) ... [2023-11-12 00:56:56,827 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:56:56" (1/1) ... [2023-11-12 00:56:56,835 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:56:56" (1/1) ... [2023-11-12 00:56:56,846 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:56:56" (1/1) ... [2023-11-12 00:56:56,851 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 00:56:56,852 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 00:56:56,852 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 00:56:56,852 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 00:56:56,853 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:56:56" (1/1) ... [2023-11-12 00:56:56,867 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:56:56,887 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a656edc-b3f5-4e04-a2b0-84a439f74967/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:56:56,902 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a656edc-b3f5-4e04-a2b0-84a439f74967/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 00:56:56,952 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a656edc-b3f5-4e04-a2b0-84a439f74967/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 00:56:56,968 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 00:56:56,969 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-12 00:56:56,969 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-12 00:56:56,969 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-12 00:56:56,971 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 00:56:56,971 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 00:56:57,106 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 00:56:57,108 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 00:56:58,162 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 00:56:58,170 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 00:56:58,170 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-12 00:56:58,173 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:56:58 BoogieIcfgContainer [2023-11-12 00:56:58,173 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 00:56:58,176 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 00:56:58,176 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 00:56:58,180 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 00:56:58,180 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 12:56:56" (1/3) ... [2023-11-12 00:56:58,181 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1dfbf84b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:56:58, skipping insertion in model container [2023-11-12 00:56:58,182 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:56:56" (2/3) ... [2023-11-12 00:56:58,182 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1dfbf84b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:56:58, skipping insertion in model container [2023-11-12 00:56:58,182 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:56:58" (3/3) ... [2023-11-12 00:56:58,184 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_loopvsstraightlinecode_50-while_file-59.i [2023-11-12 00:56:58,205 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 00:56:58,206 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-12 00:56:58,259 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 00:56:58,266 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;@1e658a79, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-12 00:56:58,267 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-12 00:56:58,272 INFO L276 IsEmpty]: Start isEmpty. Operand has 54 states, 37 states have (on average 1.4054054054054055) internal successors, (52), 38 states have internal predecessors, (52), 14 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2023-11-12 00:56:58,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-11-12 00:56:58,287 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:56:58,288 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:56:58,288 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:56:58,294 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:56:58,295 INFO L85 PathProgramCache]: Analyzing trace with hash 1164860862, now seen corresponding path program 1 times [2023-11-12 00:56:58,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-12 00:56:58,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1078853957] [2023-11-12 00:56:58,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:56:58,313 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 [2023-11-12 00:56:58,313 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a656edc-b3f5-4e04-a2b0-84a439f74967/bin/utaipan-verify-NcY6lQBIFX/mathsat [2023-11-12 00:56:58,320 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a656edc-b3f5-4e04-a2b0-84a439f74967/bin/utaipan-verify-NcY6lQBIFX/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) [2023-11-12 00:56:58,338 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a656edc-b3f5-4e04-a2b0-84a439f74967/bin/utaipan-verify-NcY6lQBIFX/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 [2023-11-12 00:56:58,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:56:58,763 INFO L262 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-12 00:56:58,773 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:56:58,840 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 338 trivial. 0 not checked. [2023-11-12 00:56:58,841 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 00:56:58,846 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-12 00:56:58,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1078853957] [2023-11-12 00:56:58,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1078853957] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:56:58,847 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:56:58,847 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 00:56:58,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851874492] [2023-11-12 00:56:58,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:56:58,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-12 00:56:58,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-12 00:56:58,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-12 00:56:58,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-12 00:56:58,900 INFO L87 Difference]: Start difference. First operand has 54 states, 37 states have (on average 1.4054054054054055) internal successors, (52), 38 states have internal predecessors, (52), 14 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) Second operand has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 1 states have call successors, (14), 1 states have call predecessors, (14), 2 states have return successors, (14), 2 states have call predecessors, (14), 1 states have call successors, (14) [2023-11-12 00:56:58,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:56:58,945 INFO L93 Difference]: Finished difference Result 101 states and 168 transitions. [2023-11-12 00:56:58,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-12 00:56:58,948 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 1 states have call successors, (14), 1 states have call predecessors, (14), 2 states have return successors, (14), 2 states have call predecessors, (14), 1 states have call successors, (14) Word has length 95 [2023-11-12 00:56:58,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:56:58,959 INFO L225 Difference]: With dead ends: 101 [2023-11-12 00:56:58,959 INFO L226 Difference]: Without dead ends: 50 [2023-11-12 00:56:58,963 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-12 00:56:58,968 INFO L413 NwaCegarLoop]: 73 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 00:56:58,970 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 00:56:58,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2023-11-12 00:56:59,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2023-11-12 00:56:59,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 34 states have (on average 1.3235294117647058) internal successors, (45), 34 states have internal predecessors, (45), 14 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2023-11-12 00:56:59,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 73 transitions. [2023-11-12 00:56:59,028 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 73 transitions. Word has length 95 [2023-11-12 00:56:59,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:56:59,029 INFO L495 AbstractCegarLoop]: Abstraction has 50 states and 73 transitions. [2023-11-12 00:56:59,029 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 1 states have call successors, (14), 1 states have call predecessors, (14), 2 states have return successors, (14), 2 states have call predecessors, (14), 1 states have call successors, (14) [2023-11-12 00:56:59,030 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 73 transitions. [2023-11-12 00:56:59,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-11-12 00:56:59,037 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:56:59,037 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:56:59,061 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a656edc-b3f5-4e04-a2b0-84a439f74967/bin/utaipan-verify-NcY6lQBIFX/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 [2023-11-12 00:56:59,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a656edc-b3f5-4e04-a2b0-84a439f74967/bin/utaipan-verify-NcY6lQBIFX/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 [2023-11-12 00:56:59,255 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:56:59,255 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:56:59,256 INFO L85 PathProgramCache]: Analyzing trace with hash 1236847222, now seen corresponding path program 1 times [2023-11-12 00:56:59,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-12 00:56:59,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [989471117] [2023-11-12 00:56:59,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:56:59,258 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 [2023-11-12 00:56:59,258 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a656edc-b3f5-4e04-a2b0-84a439f74967/bin/utaipan-verify-NcY6lQBIFX/mathsat [2023-11-12 00:56:59,259 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a656edc-b3f5-4e04-a2b0-84a439f74967/bin/utaipan-verify-NcY6lQBIFX/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) [2023-11-12 00:56:59,261 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a656edc-b3f5-4e04-a2b0-84a439f74967/bin/utaipan-verify-NcY6lQBIFX/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 [2023-11-12 00:56:59,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:56:59,602 INFO L262 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-12 00:56:59,608 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:57:00,070 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-11-12 00:57:00,071 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 00:57:00,071 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-12 00:57:00,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [989471117] [2023-11-12 00:57:00,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [989471117] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:57:00,072 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:57:00,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 00:57:00,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928634952] [2023-11-12 00:57:00,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:57:00,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 00:57:00,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-12 00:57:00,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 00:57:00,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 00:57:00,075 INFO L87 Difference]: Start difference. First operand 50 states and 73 transitions. Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-11-12 00:57:01,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:57:01,141 INFO L93 Difference]: Finished difference Result 145 states and 214 transitions. [2023-11-12 00:57:01,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 00:57:01,156 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 95 [2023-11-12 00:57:01,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:57:01,159 INFO L225 Difference]: With dead ends: 145 [2023-11-12 00:57:01,159 INFO L226 Difference]: Without dead ends: 98 [2023-11-12 00:57:01,160 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-12 00:57:01,162 INFO L413 NwaCegarLoop]: 70 mSDtfsCounter, 48 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 203 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-12 00:57:01,162 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 203 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-12 00:57:01,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2023-11-12 00:57:01,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 79. [2023-11-12 00:57:01,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 48 states have (on average 1.2291666666666667) internal successors, (59), 48 states have internal predecessors, (59), 28 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2023-11-12 00:57:01,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 115 transitions. [2023-11-12 00:57:01,190 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 115 transitions. Word has length 95 [2023-11-12 00:57:01,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:57:01,191 INFO L495 AbstractCegarLoop]: Abstraction has 79 states and 115 transitions. [2023-11-12 00:57:01,192 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-11-12 00:57:01,192 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 115 transitions. [2023-11-12 00:57:01,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2023-11-12 00:57:01,194 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:57:01,194 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:57:01,216 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a656edc-b3f5-4e04-a2b0-84a439f74967/bin/utaipan-verify-NcY6lQBIFX/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 [2023-11-12 00:57:01,412 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a656edc-b3f5-4e04-a2b0-84a439f74967/bin/utaipan-verify-NcY6lQBIFX/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 [2023-11-12 00:57:01,413 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:57:01,413 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:57:01,414 INFO L85 PathProgramCache]: Analyzing trace with hash 1287173988, now seen corresponding path program 1 times [2023-11-12 00:57:01,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-12 00:57:01,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [662261723] [2023-11-12 00:57:01,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:57:01,415 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 [2023-11-12 00:57:01,415 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a656edc-b3f5-4e04-a2b0-84a439f74967/bin/utaipan-verify-NcY6lQBIFX/mathsat [2023-11-12 00:57:01,416 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a656edc-b3f5-4e04-a2b0-84a439f74967/bin/utaipan-verify-NcY6lQBIFX/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) [2023-11-12 00:57:01,418 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a656edc-b3f5-4e04-a2b0-84a439f74967/bin/utaipan-verify-NcY6lQBIFX/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 [2023-11-12 00:57:01,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:57:01,735 INFO L262 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-12 00:57:01,740 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:57:02,100 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-11-12 00:57:02,100 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 00:57:02,101 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-12 00:57:02,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [662261723] [2023-11-12 00:57:02,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [662261723] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:57:02,101 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:57:02,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 00:57:02,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391633852] [2023-11-12 00:57:02,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:57:02,102 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 00:57:02,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-12 00:57:02,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 00:57:02,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 00:57:02,104 INFO L87 Difference]: Start difference. First operand 79 states and 115 transitions. Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-11-12 00:57:03,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:57:03,704 INFO L93 Difference]: Finished difference Result 183 states and 267 transitions. [2023-11-12 00:57:03,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 00:57:03,718 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 96 [2023-11-12 00:57:03,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:57:03,722 INFO L225 Difference]: With dead ends: 183 [2023-11-12 00:57:03,722 INFO L226 Difference]: Without dead ends: 136 [2023-11-12 00:57:03,723 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-12 00:57:03,724 INFO L413 NwaCegarLoop]: 75 mSDtfsCounter, 63 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 201 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-11-12 00:57:03,725 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 201 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-11-12 00:57:03,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2023-11-12 00:57:03,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 124. [2023-11-12 00:57:03,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 78 states have (on average 1.2564102564102564) internal successors, (98), 78 states have internal predecessors, (98), 42 states have call successors, (42), 3 states have call predecessors, (42), 3 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2023-11-12 00:57:03,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 182 transitions. [2023-11-12 00:57:03,769 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 182 transitions. Word has length 96 [2023-11-12 00:57:03,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:57:03,770 INFO L495 AbstractCegarLoop]: Abstraction has 124 states and 182 transitions. [2023-11-12 00:57:03,771 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-11-12 00:57:03,771 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 182 transitions. [2023-11-12 00:57:03,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-11-12 00:57:03,773 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:57:03,778 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:57:03,795 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a656edc-b3f5-4e04-a2b0-84a439f74967/bin/utaipan-verify-NcY6lQBIFX/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 [2023-11-12 00:57:03,994 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a656edc-b3f5-4e04-a2b0-84a439f74967/bin/utaipan-verify-NcY6lQBIFX/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 [2023-11-12 00:57:03,994 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:57:03,995 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:57:03,995 INFO L85 PathProgramCache]: Analyzing trace with hash 866463787, now seen corresponding path program 1 times [2023-11-12 00:57:03,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-12 00:57:03,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [33213755] [2023-11-12 00:57:03,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:57:03,997 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 [2023-11-12 00:57:03,997 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a656edc-b3f5-4e04-a2b0-84a439f74967/bin/utaipan-verify-NcY6lQBIFX/mathsat [2023-11-12 00:57:03,998 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a656edc-b3f5-4e04-a2b0-84a439f74967/bin/utaipan-verify-NcY6lQBIFX/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) [2023-11-12 00:57:04,003 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a656edc-b3f5-4e04-a2b0-84a439f74967/bin/utaipan-verify-NcY6lQBIFX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-11-12 00:57:04,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:57:04,347 INFO L262 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-12 00:57:04,353 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:57:07,121 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 183 proven. 90 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2023-11-12 00:57:07,121 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 00:57:13,061 WARN L876 $PredicateComparison]: unable to prove that (let ((.cse9 ((_ zero_extend 24) c_~var_1_4~0))) (let ((.cse8 ((_ zero_extend 16) c_~last_1_var_1_5~0)) (.cse5 (bvadd .cse9 ((_ zero_extend 16) c_~var_1_7~0))) (.cse4 (bvsdiv ((_ zero_extend 16) c_~var_1_6~0) .cse9))) (let ((.cse1 (forall ((|ULTIMATE.start_step_~stepLocal_4~0#1| (_ BitVec 16))) (not (= (bvmul c_~var_1_19~0 .cse4) ((_ zero_extend 16) |ULTIMATE.start_step_~stepLocal_4~0#1|))))) (.cse0 (bvsgt .cse8 .cse5))) (and (or .cse0 (let ((.cse3 ((_ zero_extend 16) ((_ extract 15 0) .cse5)))) (let ((.cse2 (bvugt .cse3 c_~var_1_19~0))) (and (or .cse1 .cse2) (or (not .cse2) (forall ((|ULTIMATE.start_step_~stepLocal_4~0#1| (_ BitVec 16))) (not (= (bvmul .cse3 .cse4) ((_ zero_extend 16) |ULTIMATE.start_step_~stepLocal_4~0#1|))))))))) (or (let ((.cse7 ((_ zero_extend 16) ((_ extract 15 0) .cse8)))) (let ((.cse6 (bvugt .cse7 c_~var_1_19~0))) (and (or .cse1 .cse6) (or (forall ((|ULTIMATE.start_step_~stepLocal_4~0#1| (_ BitVec 16))) (not (= ((_ zero_extend 16) |ULTIMATE.start_step_~stepLocal_4~0#1|) (bvmul .cse7 .cse4)))) (not .cse6))))) (not .cse0)))))) is different from true [2023-11-12 00:57:21,952 WARN L293 SmtUtils]: Spent 6.21s on a formula simplification that was a NOOP. DAG size: 15 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-12 00:57:24,486 WARN L876 $PredicateComparison]: unable to prove that (let ((.cse4 ((_ zero_extend 24) c_~var_1_4~0))) (let ((.cse0 ((_ zero_extend 16) c_~last_1_var_1_5~0)) (.cse6 (bvadd .cse4 ((_ zero_extend 16) c_~var_1_7~0)))) (let ((.cse2 (bvsgt .cse0 .cse6)) (.cse1 (bvsdiv ((_ zero_extend 16) c_~var_1_6~0) .cse4))) (and (or (forall ((|ULTIMATE.start_step_~stepLocal_4~0#1| (_ BitVec 16))) (not (= ((_ zero_extend 16) |ULTIMATE.start_step_~stepLocal_4~0#1|) (bvmul ((_ zero_extend 16) ((_ extract 15 0) .cse0)) .cse1)))) (not .cse2)) (or .cse2 (let ((.cse5 ((_ zero_extend 16) ((_ extract 15 0) .cse6)))) (let ((.cse3 (bvugt .cse5 .cse4))) (and (or .cse3 (forall ((|ULTIMATE.start_step_~stepLocal_4~0#1| (_ BitVec 16))) (not (= (bvmul .cse4 .cse1) ((_ zero_extend 16) |ULTIMATE.start_step_~stepLocal_4~0#1|))))) (or (not .cse3) (forall ((|ULTIMATE.start_step_~stepLocal_4~0#1| (_ BitVec 16))) (not (= (bvmul .cse5 .cse1) ((_ zero_extend 16) |ULTIMATE.start_step_~stepLocal_4~0#1|))))))))))))) is different from true [2023-11-12 00:57:30,532 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-12 00:57:30,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [33213755] [2023-11-12 00:57:30,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [33213755] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 00:57:30,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1032553581] [2023-11-12 00:57:30,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:57:30,533 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-12 00:57:30,533 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a656edc-b3f5-4e04-a2b0-84a439f74967/bin/utaipan-verify-NcY6lQBIFX/cvc4 [2023-11-12 00:57:30,538 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a656edc-b3f5-4e04-a2b0-84a439f74967/bin/utaipan-verify-NcY6lQBIFX/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-12 00:57:30,540 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a656edc-b3f5-4e04-a2b0-84a439f74967/bin/utaipan-verify-NcY6lQBIFX/cvc4 --incremental --print-success --lang smt (6)] Waiting until timeout for monitored process [2023-11-12 00:57:31,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:57:31,788 INFO L262 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-12 00:57:31,793 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:57:35,973 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 183 proven. 90 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2023-11-12 00:57:35,973 INFO L327 TraceCheckSpWp]: Computing backward predicates...