./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-67.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_a8ea34aa-6e7c-4484-9963-472f1e12c812/bin/utaipan-verify-NcY6lQBIFX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8ea34aa-6e7c-4484-9963-472f1e12c812/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_a8ea34aa-6e7c-4484-9963-472f1e12c812/bin/utaipan-verify-NcY6lQBIFX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8ea34aa-6e7c-4484-9963-472f1e12c812/bin/utaipan-verify-NcY6lQBIFX/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-67.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8ea34aa-6e7c-4484-9963-472f1e12c812/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_a8ea34aa-6e7c-4484-9963-472f1e12c812/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 fd38e103082400978e963855c45ad16aea167d5793b2ed8eb8338e9d66135232 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 00:56:35,424 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 00:56:35,512 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8ea34aa-6e7c-4484-9963-472f1e12c812/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-11-12 00:56:35,518 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 00:56:35,518 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 00:56:35,545 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 00:56:35,550 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 00:56:35,550 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 00:56:35,551 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 00:56:35,556 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 00:56:35,557 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-12 00:56:35,558 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-12 00:56:35,558 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-12 00:56:35,560 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-12 00:56:35,560 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-12 00:56:35,561 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-12 00:56:35,561 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-12 00:56:35,562 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-12 00:56:35,562 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-12 00:56:35,563 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-12 00:56:35,564 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-12 00:56:35,565 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-12 00:56:35,566 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 00:56:35,567 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 00:56:35,567 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 00:56:35,568 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 00:56:35,568 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 00:56:35,569 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 00:56:35,569 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 00:56:35,569 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 00:56:35,571 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 00:56:35,571 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 00:56:35,571 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 00:56:35,572 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 00:56:35,572 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 00:56:35,572 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 00:56:35,572 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:56:35,573 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 00:56:35,573 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 00:56:35,573 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 00:56:35,574 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-12 00:56:35,574 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 00:56:35,574 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 00:56:35,574 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-12 00:56:35,575 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 00:56:35,575 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_a8ea34aa-6e7c-4484-9963-472f1e12c812/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8ea34aa-6e7c-4484-9963-472f1e12c812/bin/utaipan-verify-NcY6lQBIFX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fd38e103082400978e963855c45ad16aea167d5793b2ed8eb8338e9d66135232 [2023-11-12 00:56:35,875 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 00:56:35,897 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 00:56:35,900 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 00:56:35,901 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 00:56:35,901 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 00:56:35,903 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8ea34aa-6e7c-4484-9963-472f1e12c812/bin/utaipan-verify-NcY6lQBIFX/../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-67.i [2023-11-12 00:56:39,033 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 00:56:39,240 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 00:56:39,241 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8ea34aa-6e7c-4484-9963-472f1e12c812/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-67.i [2023-11-12 00:56:39,252 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8ea34aa-6e7c-4484-9963-472f1e12c812/bin/utaipan-verify-NcY6lQBIFX/data/03154f33f/0fd935490e50479ca3b86e81b5847c81/FLAGefb20c89e [2023-11-12 00:56:39,269 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8ea34aa-6e7c-4484-9963-472f1e12c812/bin/utaipan-verify-NcY6lQBIFX/data/03154f33f/0fd935490e50479ca3b86e81b5847c81 [2023-11-12 00:56:39,275 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 00:56:39,276 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 00:56:39,282 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 00:56:39,282 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 00:56:39,287 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 00:56:39,291 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:56:39" (1/1) ... [2023-11-12 00:56:39,292 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2263e2b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:56:39, skipping insertion in model container [2023-11-12 00:56:39,292 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:56:39" (1/1) ... [2023-11-12 00:56:39,337 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 00:56:39,538 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_a8ea34aa-6e7c-4484-9963-472f1e12c812/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-67.i[915,928] [2023-11-12 00:56:39,579 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:56:39,595 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 00:56:39,608 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_a8ea34aa-6e7c-4484-9963-472f1e12c812/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-67.i[915,928] [2023-11-12 00:56:39,634 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:56:39,649 INFO L206 MainTranslator]: Completed translation [2023-11-12 00:56:39,650 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:56:39 WrapperNode [2023-11-12 00:56:39,650 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 00:56:39,651 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 00:56:39,651 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 00:56:39,651 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 00:56:39,659 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:56:39" (1/1) ... [2023-11-12 00:56:39,681 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:56:39" (1/1) ... [2023-11-12 00:56:39,712 INFO L138 Inliner]: procedures = 26, calls = 32, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 114 [2023-11-12 00:56:39,712 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 00:56:39,713 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 00:56:39,713 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 00:56:39,724 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 00:56:39,731 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:56:39" (1/1) ... [2023-11-12 00:56:39,731 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:56:39" (1/1) ... [2023-11-12 00:56:39,734 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:56:39" (1/1) ... [2023-11-12 00:56:39,734 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:56:39" (1/1) ... [2023-11-12 00:56:39,741 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:56:39" (1/1) ... [2023-11-12 00:56:39,745 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:56:39" (1/1) ... [2023-11-12 00:56:39,747 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:56:39" (1/1) ... [2023-11-12 00:56:39,767 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:56:39" (1/1) ... [2023-11-12 00:56:39,771 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 00:56:39,772 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 00:56:39,773 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 00:56:39,773 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 00:56:39,777 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:56:39" (1/1) ... [2023-11-12 00:56:39,784 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:56:39,805 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8ea34aa-6e7c-4484-9963-472f1e12c812/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:56:39,818 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8ea34aa-6e7c-4484-9963-472f1e12c812/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 00:56:39,845 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8ea34aa-6e7c-4484-9963-472f1e12c812/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 00:56:39,861 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 00:56:39,861 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-12 00:56:39,861 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-12 00:56:39,862 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 00:56:39,862 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 00:56:39,862 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 00:56:39,978 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 00:56:39,981 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 00:56:40,326 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 00:56:40,494 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 00:56:40,495 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-12 00:56:40,497 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:56:40 BoogieIcfgContainer [2023-11-12 00:56:40,497 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 00:56:40,500 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 00:56:40,500 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 00:56:40,503 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 00:56:40,504 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 12:56:39" (1/3) ... [2023-11-12 00:56:40,505 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39bd70ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:56:40, skipping insertion in model container [2023-11-12 00:56:40,505 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:56:39" (2/3) ... [2023-11-12 00:56:40,505 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39bd70ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:56:40, skipping insertion in model container [2023-11-12 00:56:40,505 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:56:40" (3/3) ... [2023-11-12 00:56:40,507 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_loopvsstraightlinecode_25-while_file-67.i [2023-11-12 00:56:40,527 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 00:56:40,527 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-12 00:56:40,577 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 00:56:40,584 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;@737048a4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-12 00:56:40,584 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-12 00:56:40,589 INFO L276 IsEmpty]: Start isEmpty. Operand has 37 states, 15 states have (on average 1.2) internal successors, (18), 16 states have internal predecessors, (18), 19 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2023-11-12 00:56:40,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-11-12 00:56:40,600 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:56:40,601 INFO L195 NwaCegarLoop]: trace histogram [19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:56:40,602 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:56:40,607 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:56:40,607 INFO L85 PathProgramCache]: Analyzing trace with hash -885120823, now seen corresponding path program 1 times [2023-11-12 00:56:40,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:56:40,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903078488] [2023-11-12 00:56:40,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:56:40,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:56:40,809 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 00:56:40,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1386103271] [2023-11-12 00:56:40,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:56:40,814 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:56:40,815 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8ea34aa-6e7c-4484-9963-472f1e12c812/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:56:40,820 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8ea34aa-6e7c-4484-9963-472f1e12c812/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 00:56:40,848 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8ea34aa-6e7c-4484-9963-472f1e12c812/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-12 00:56:41,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 00:56:41,130 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-12 00:56:41,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 00:56:41,293 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-11-12 00:56:41,298 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-12 00:56:41,299 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-12 00:56:41,313 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8ea34aa-6e7c-4484-9963-472f1e12c812/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-12 00:56:41,507 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8ea34aa-6e7c-4484-9963-472f1e12c812/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-12 00:56:41,512 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-11-12 00:56:41,516 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-11-12 00:56:41,592 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 12:56:41 BoogieIcfgContainer [2023-11-12 00:56:41,596 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-12 00:56:41,597 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-12 00:56:41,598 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-12 00:56:41,598 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-12 00:56:41,599 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:56:40" (3/4) ... [2023-11-12 00:56:41,604 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-12 00:56:41,605 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-12 00:56:41,606 INFO L158 Benchmark]: Toolchain (without parser) took 2329.91ms. Allocated memory is still 138.4MB. Free memory was 101.2MB in the beginning and 38.0MB in the end (delta: 63.2MB). Peak memory consumption was 61.1MB. Max. memory is 16.1GB. [2023-11-12 00:56:41,607 INFO L158 Benchmark]: CDTParser took 0.34ms. Allocated memory is still 111.1MB. Free memory is still 82.8MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-12 00:56:41,609 INFO L158 Benchmark]: CACSL2BoogieTranslator took 368.48ms. Allocated memory is still 138.4MB. Free memory was 100.7MB in the beginning and 106.2MB in the end (delta: -5.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-11-12 00:56:41,610 INFO L158 Benchmark]: Boogie Procedure Inliner took 61.17ms. Allocated memory is still 138.4MB. Free memory was 106.2MB in the beginning and 103.6MB in the end (delta: 2.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-12 00:56:41,616 INFO L158 Benchmark]: Boogie Preprocessor took 58.80ms. Allocated memory is still 138.4MB. Free memory was 103.6MB in the beginning and 102.4MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-12 00:56:41,618 INFO L158 Benchmark]: RCFGBuilder took 725.18ms. Allocated memory is still 138.4MB. Free memory was 102.4MB in the beginning and 72.7MB in the end (delta: 29.7MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. [2023-11-12 00:56:41,618 INFO L158 Benchmark]: TraceAbstraction took 1096.20ms. Allocated memory is still 138.4MB. Free memory was 71.6MB in the beginning and 38.0MB in the end (delta: 33.6MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. [2023-11-12 00:56:41,619 INFO L158 Benchmark]: Witness Printer took 7.81ms. Allocated memory is still 138.4MB. Free memory is still 38.0MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-12 00:56:41,626 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34ms. Allocated memory is still 111.1MB. Free memory is still 82.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 368.48ms. Allocated memory is still 138.4MB. Free memory was 100.7MB in the beginning and 106.2MB in the end (delta: -5.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 61.17ms. Allocated memory is still 138.4MB. Free memory was 106.2MB in the beginning and 103.6MB in the end (delta: 2.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 58.80ms. Allocated memory is still 138.4MB. Free memory was 103.6MB in the beginning and 102.4MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 725.18ms. Allocated memory is still 138.4MB. Free memory was 102.4MB in the beginning and 72.7MB in the end (delta: 29.7MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. * TraceAbstraction took 1096.20ms. Allocated memory is still 138.4MB. Free memory was 71.6MB in the beginning and 38.0MB in the end (delta: 33.6MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. * Witness Printer took 7.81ms. Allocated memory is still 138.4MB. Free memory is still 38.0MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 19]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 98. Possible FailurePath: [L21] unsigned char isInitial = 0; [L22] signed short int var_1_1 = 2; [L23] signed short int var_1_4 = -64; [L24] signed short int var_1_5 = 256; [L25] unsigned short int var_1_6 = 128; [L26] signed short int var_1_7 = -128; [L27] unsigned short int var_1_8 = 16; [L28] unsigned short int var_1_9 = 256; [L29] signed long int var_1_10 = 128; [L30] unsigned short int var_1_11 = 47512; [L31] unsigned char var_1_12 = 16; [L32] unsigned char var_1_13 = 1; [L33] float var_1_14 = 5.5; [L34] float var_1_15 = 24.5; [L35] signed short int last_1_var_1_1 = 2; [L36] unsigned short int last_1_var_1_6 = 128; [L102] isInitial = 1 [L103] FCALL initially() [L104] COND TRUE 1 [L105] CALL updateLastVariables() [L94] last_1_var_1_1 = var_1_1 [L95] last_1_var_1_6 = var_1_6 [L105] RET updateLastVariables() [L106] CALL updateVariables() [L64] var_1_4 = __VERIFIER_nondet_short() [L65] CALL assume_abort_if_not(var_1_4 >= -16383) VAL [\old(cond)=1, isInitial=1, last_1_var_1_1=2, last_1_var_1_6=128, var_1_10=128, var_1_11=47512, var_1_12=16, var_1_13=1, var_1_14=11/2, var_1_15=49/2, var_1_1=2, var_1_4=0, var_1_5=256, var_1_6=128, var_1_7=-128, var_1_8=16, var_1_9=256] [L20] COND FALSE !(!cond) [L65] RET assume_abort_if_not(var_1_4 >= -16383) VAL [isInitial=1, last_1_var_1_1=2, last_1_var_1_6=128, var_1_10=128, var_1_11=47512, var_1_12=16, var_1_13=1, var_1_14=11/2, var_1_15=49/2, var_1_1=2, var_1_4=0, var_1_5=256, var_1_6=128, var_1_7=-128, var_1_8=16, var_1_9=256] [L66] CALL assume_abort_if_not(var_1_4 <= 16383) VAL [\old(cond)=1, isInitial=1, last_1_var_1_1=2, last_1_var_1_6=128, var_1_10=128, var_1_11=47512, var_1_12=16, var_1_13=1, var_1_14=11/2, var_1_15=49/2, var_1_1=2, var_1_4=0, var_1_5=256, var_1_6=128, var_1_7=-128, var_1_8=16, var_1_9=256] [L20] COND FALSE !(!cond) [L66] RET assume_abort_if_not(var_1_4 <= 16383) VAL [isInitial=1, last_1_var_1_1=2, last_1_var_1_6=128, var_1_10=128, var_1_11=47512, var_1_12=16, var_1_13=1, var_1_14=11/2, var_1_15=49/2, var_1_1=2, var_1_4=0, var_1_5=256, var_1_6=128, var_1_7=-128, var_1_8=16, var_1_9=256] [L67] var_1_5 = __VERIFIER_nondet_short() [L68] CALL assume_abort_if_not(var_1_5 >= -16383) VAL [\old(cond)=1, isInitial=1, last_1_var_1_1=2, last_1_var_1_6=128, var_1_10=128, var_1_11=47512, var_1_12=16, var_1_13=1, var_1_14=11/2, var_1_15=49/2, var_1_1=2, var_1_4=0, var_1_5=-258, var_1_6=128, var_1_7=-128, var_1_8=16, var_1_9=256] [L20] COND FALSE !(!cond) [L68] RET assume_abort_if_not(var_1_5 >= -16383) VAL [isInitial=1, last_1_var_1_1=2, last_1_var_1_6=128, var_1_10=128, var_1_11=47512, var_1_12=16, var_1_13=1, var_1_14=11/2, var_1_15=49/2, var_1_1=2, var_1_4=0, var_1_5=-258, var_1_6=128, var_1_7=-128, var_1_8=16, var_1_9=256] [L69] CALL assume_abort_if_not(var_1_5 <= 16383) VAL [\old(cond)=1, isInitial=1, last_1_var_1_1=2, last_1_var_1_6=128, var_1_10=128, var_1_11=47512, var_1_12=16, var_1_13=1, var_1_14=11/2, var_1_15=49/2, var_1_1=2, var_1_4=0, var_1_5=-258, var_1_6=128, var_1_7=-128, var_1_8=16, var_1_9=256] [L20] COND FALSE !(!cond) [L69] RET assume_abort_if_not(var_1_5 <= 16383) VAL [isInitial=1, last_1_var_1_1=2, last_1_var_1_6=128, var_1_10=128, var_1_11=47512, var_1_12=16, var_1_13=1, var_1_14=11/2, var_1_15=49/2, var_1_1=2, var_1_4=0, var_1_5=-258, var_1_6=128, var_1_7=-128, var_1_8=16, var_1_9=256] [L70] var_1_7 = __VERIFIER_nondet_short() [L71] CALL assume_abort_if_not(var_1_7 >= -32768) VAL [\old(cond)=1, isInitial=1, last_1_var_1_1=2, last_1_var_1_6=128, var_1_10=128, var_1_11=47512, var_1_12=16, var_1_13=1, var_1_14=11/2, var_1_15=49/2, var_1_1=2, var_1_4=0, var_1_5=-258, var_1_6=128, var_1_7=259, var_1_8=16, var_1_9=256] [L20] COND FALSE !(!cond) [L71] RET assume_abort_if_not(var_1_7 >= -32768) VAL [isInitial=1, last_1_var_1_1=2, last_1_var_1_6=128, var_1_10=128, var_1_11=47512, var_1_12=16, var_1_13=1, var_1_14=11/2, var_1_15=49/2, var_1_1=2, var_1_4=0, var_1_5=-258, var_1_6=128, var_1_7=259, var_1_8=16, var_1_9=256] [L72] CALL assume_abort_if_not(var_1_7 <= 32767) VAL [\old(cond)=1, isInitial=1, last_1_var_1_1=2, last_1_var_1_6=128, var_1_10=128, var_1_11=47512, var_1_12=16, var_1_13=1, var_1_14=11/2, var_1_15=49/2, var_1_1=2, var_1_4=0, var_1_5=-258, var_1_6=128, var_1_7=259, var_1_8=16, var_1_9=256] [L20] COND FALSE !(!cond) [L72] RET assume_abort_if_not(var_1_7 <= 32767) VAL [isInitial=1, last_1_var_1_1=2, last_1_var_1_6=128, var_1_10=128, var_1_11=47512, var_1_12=16, var_1_13=1, var_1_14=11/2, var_1_15=49/2, var_1_1=2, var_1_4=0, var_1_5=-258, var_1_6=128, var_1_7=259, var_1_8=16, var_1_9=256] [L73] CALL assume_abort_if_not(var_1_7 != 0) VAL [\old(cond)=1, isInitial=1, last_1_var_1_1=2, last_1_var_1_6=128, var_1_10=128, var_1_11=47512, var_1_12=16, var_1_13=1, var_1_14=11/2, var_1_15=49/2, var_1_1=2, var_1_4=0, var_1_5=-258, var_1_6=128, var_1_7=259, var_1_8=16, var_1_9=256] [L20] COND FALSE !(!cond) [L73] RET assume_abort_if_not(var_1_7 != 0) VAL [isInitial=1, last_1_var_1_1=2, last_1_var_1_6=128, var_1_10=128, var_1_11=47512, var_1_12=16, var_1_13=1, var_1_14=11/2, var_1_15=49/2, var_1_1=2, var_1_4=0, var_1_5=-258, var_1_6=128, var_1_7=259, var_1_8=16, var_1_9=256] [L74] var_1_8 = __VERIFIER_nondet_ushort() [L75] CALL assume_abort_if_not(var_1_8 >= 0) VAL [\old(cond)=1, isInitial=1, last_1_var_1_1=2, last_1_var_1_6=128, var_1_10=128, var_1_11=47512, var_1_12=16, var_1_13=1, var_1_14=11/2, var_1_15=49/2, var_1_1=2, var_1_4=0, var_1_5=-258, var_1_6=128, var_1_7=259, var_1_8=32639, var_1_9=256] [L20] COND FALSE !(!cond) [L75] RET assume_abort_if_not(var_1_8 >= 0) VAL [isInitial=1, last_1_var_1_1=2, last_1_var_1_6=128, var_1_10=128, var_1_11=47512, var_1_12=16, var_1_13=1, var_1_14=11/2, var_1_15=49/2, var_1_1=2, var_1_4=0, var_1_5=-258, var_1_6=128, var_1_7=259, var_1_8=32639, var_1_9=256] [L76] CALL assume_abort_if_not(var_1_8 <= 32767) VAL [\old(cond)=1, isInitial=1, last_1_var_1_1=2, last_1_var_1_6=128, var_1_10=128, var_1_11=47512, var_1_12=16, var_1_13=1, var_1_14=11/2, var_1_15=49/2, var_1_1=2, var_1_4=0, var_1_5=-258, var_1_6=128, var_1_7=259, var_1_8=32639, var_1_9=256] [L20] COND FALSE !(!cond) [L76] RET assume_abort_if_not(var_1_8 <= 32767) VAL [isInitial=1, last_1_var_1_1=2, last_1_var_1_6=128, var_1_10=128, var_1_11=47512, var_1_12=16, var_1_13=1, var_1_14=11/2, var_1_15=49/2, var_1_1=2, var_1_4=0, var_1_5=-258, var_1_6=128, var_1_7=259, var_1_8=32639, var_1_9=256] [L77] var_1_9 = __VERIFIER_nondet_ushort() [L78] CALL assume_abort_if_not(var_1_9 >= 0) VAL [\old(cond)=1, isInitial=1, last_1_var_1_1=2, last_1_var_1_6=128, var_1_10=128, var_1_11=47512, var_1_12=16, var_1_13=1, var_1_14=11/2, var_1_15=49/2, var_1_1=2, var_1_4=0, var_1_5=-258, var_1_6=128, var_1_7=259, var_1_8=32639, var_1_9=0] [L20] COND FALSE !(!cond) [L78] RET assume_abort_if_not(var_1_9 >= 0) VAL [isInitial=1, last_1_var_1_1=2, last_1_var_1_6=128, var_1_10=128, var_1_11=47512, var_1_12=16, var_1_13=1, var_1_14=11/2, var_1_15=49/2, var_1_1=2, var_1_4=0, var_1_5=-258, var_1_6=128, var_1_7=259, var_1_8=32639, var_1_9=0] [L79] CALL assume_abort_if_not(var_1_9 <= 32767) VAL [\old(cond)=1, isInitial=1, last_1_var_1_1=2, last_1_var_1_6=128, var_1_10=128, var_1_11=47512, var_1_12=16, var_1_13=1, var_1_14=11/2, var_1_15=49/2, var_1_1=2, var_1_4=0, var_1_5=-258, var_1_6=128, var_1_7=259, var_1_8=32639, var_1_9=0] [L20] COND FALSE !(!cond) [L79] RET assume_abort_if_not(var_1_9 <= 32767) VAL [isInitial=1, last_1_var_1_1=2, last_1_var_1_6=128, var_1_10=128, var_1_11=47512, var_1_12=16, var_1_13=1, var_1_14=11/2, var_1_15=49/2, var_1_1=2, var_1_4=0, var_1_5=-258, var_1_6=128, var_1_7=259, var_1_8=32639, var_1_9=0] [L80] var_1_11 = __VERIFIER_nondet_ushort() [L81] CALL assume_abort_if_not(var_1_11 >= 32767) VAL [\old(cond)=1, isInitial=1, last_1_var_1_1=2, last_1_var_1_6=128, var_1_10=128, var_1_11=32767, var_1_12=16, var_1_13=1, var_1_14=11/2, var_1_15=49/2, var_1_1=2, var_1_4=0, var_1_5=-258, var_1_6=128, var_1_7=259, var_1_8=32639, var_1_9=0] [L20] COND FALSE !(!cond) [L81] RET assume_abort_if_not(var_1_11 >= 32767) VAL [isInitial=1, last_1_var_1_1=2, last_1_var_1_6=128, var_1_10=128, var_1_11=32767, var_1_12=16, var_1_13=1, var_1_14=11/2, var_1_15=49/2, var_1_1=2, var_1_4=0, var_1_5=-258, var_1_6=128, var_1_7=259, var_1_8=32639, var_1_9=0] [L82] CALL assume_abort_if_not(var_1_11 <= 65535) VAL [\old(cond)=1, isInitial=1, last_1_var_1_1=2, last_1_var_1_6=128, var_1_10=128, var_1_11=32767, var_1_12=16, var_1_13=1, var_1_14=11/2, var_1_15=49/2, var_1_1=2, var_1_4=0, var_1_5=-258, var_1_6=128, var_1_7=259, var_1_8=32639, var_1_9=0] [L20] COND FALSE !(!cond) [L82] RET assume_abort_if_not(var_1_11 <= 65535) VAL [isInitial=1, last_1_var_1_1=2, last_1_var_1_6=128, var_1_10=128, var_1_11=32767, var_1_12=16, var_1_13=1, var_1_14=11/2, var_1_15=49/2, var_1_1=2, var_1_4=0, var_1_5=-258, var_1_6=128, var_1_7=259, var_1_8=32639, var_1_9=0] [L83] var_1_12 = __VERIFIER_nondet_uchar() [L84] CALL assume_abort_if_not(var_1_12 >= 0) VAL [\old(cond)=1, isInitial=1, last_1_var_1_1=2, last_1_var_1_6=128, var_1_10=128, var_1_11=32767, var_1_12=2, var_1_13=1, var_1_14=11/2, var_1_15=49/2, var_1_1=2, var_1_4=0, var_1_5=-258, var_1_6=128, var_1_7=259, var_1_8=32639, var_1_9=0] [L20] COND FALSE !(!cond) [L84] RET assume_abort_if_not(var_1_12 >= 0) VAL [isInitial=1, last_1_var_1_1=2, last_1_var_1_6=128, var_1_10=128, var_1_11=32767, var_1_12=2, var_1_13=1, var_1_14=11/2, var_1_15=49/2, var_1_1=2, var_1_4=0, var_1_5=-258, var_1_6=128, var_1_7=259, var_1_8=32639, var_1_9=0] [L85] CALL assume_abort_if_not(var_1_12 <= 255) VAL [\old(cond)=1, isInitial=1, last_1_var_1_1=2, last_1_var_1_6=128, var_1_10=128, var_1_11=32767, var_1_12=2, var_1_13=1, var_1_14=11/2, var_1_15=49/2, var_1_1=2, var_1_4=0, var_1_5=-258, var_1_6=128, var_1_7=259, var_1_8=32639, var_1_9=0] [L20] COND FALSE !(!cond) [L85] RET assume_abort_if_not(var_1_12 <= 255) VAL [isInitial=1, last_1_var_1_1=2, last_1_var_1_6=128, var_1_10=128, var_1_11=32767, var_1_12=2, var_1_13=1, var_1_14=11/2, var_1_15=49/2, var_1_1=2, var_1_4=0, var_1_5=-258, var_1_6=128, var_1_7=259, var_1_8=32639, var_1_9=0] [L86] CALL assume_abort_if_not(var_1_12 != 0) VAL [\old(cond)=1, isInitial=1, last_1_var_1_1=2, last_1_var_1_6=128, var_1_10=128, var_1_11=32767, var_1_12=2, var_1_13=1, var_1_14=11/2, var_1_15=49/2, var_1_1=2, var_1_4=0, var_1_5=-258, var_1_6=128, var_1_7=259, var_1_8=32639, var_1_9=0] [L20] COND FALSE !(!cond) [L86] RET assume_abort_if_not(var_1_12 != 0) VAL [isInitial=1, last_1_var_1_1=2, last_1_var_1_6=128, var_1_10=128, var_1_11=32767, var_1_12=2, var_1_13=1, var_1_14=11/2, var_1_15=49/2, var_1_1=2, var_1_4=0, var_1_5=-258, var_1_6=128, var_1_7=259, var_1_8=32639, var_1_9=0] [L87] var_1_13 = __VERIFIER_nondet_uchar() [L88] CALL assume_abort_if_not(var_1_13 >= 0) VAL [\old(cond)=1, isInitial=1, last_1_var_1_1=2, last_1_var_1_6=128, var_1_10=128, var_1_11=32767, var_1_12=2, var_1_13=0, var_1_14=11/2, var_1_15=49/2, var_1_1=2, var_1_4=0, var_1_5=-258, var_1_6=128, var_1_7=259, var_1_8=32639, var_1_9=0] [L20] COND FALSE !(!cond) [L88] RET assume_abort_if_not(var_1_13 >= 0) VAL [isInitial=1, last_1_var_1_1=2, last_1_var_1_6=128, var_1_10=128, var_1_11=32767, var_1_12=2, var_1_13=0, var_1_14=11/2, var_1_15=49/2, var_1_1=2, var_1_4=0, var_1_5=-258, var_1_6=128, var_1_7=259, var_1_8=32639, var_1_9=0] [L89] CALL assume_abort_if_not(var_1_13 <= 1) VAL [\old(cond)=1, isInitial=1, last_1_var_1_1=2, last_1_var_1_6=128, var_1_10=128, var_1_11=32767, var_1_12=2, var_1_13=0, var_1_14=11/2, var_1_15=49/2, var_1_1=2, var_1_4=0, var_1_5=-258, var_1_6=128, var_1_7=259, var_1_8=32639, var_1_9=0] [L20] COND FALSE !(!cond) [L89] RET assume_abort_if_not(var_1_13 <= 1) VAL [isInitial=1, last_1_var_1_1=2, last_1_var_1_6=128, var_1_10=128, var_1_11=32767, var_1_12=2, var_1_13=0, var_1_14=11/2, var_1_15=49/2, var_1_1=2, var_1_4=0, var_1_5=-258, var_1_6=128, var_1_7=259, var_1_8=32639, var_1_9=0] [L90] var_1_15 = __VERIFIER_nondet_float() [L91] CALL assume_abort_if_not((var_1_15 >= -922337.2036854765600e+13F && var_1_15 <= -1.0e-20F) || (var_1_15 <= 9223372.036854765600e+12F && var_1_15 >= 1.0e-20F )) VAL [\old(cond)=1, isInitial=1, last_1_var_1_1=2, last_1_var_1_6=128, var_1_10=128, var_1_11=32767, var_1_12=2, var_1_13=0, var_1_14=11/2, var_1_15=2, var_1_1=2, var_1_4=0, var_1_5=-258, var_1_6=128, var_1_7=259, var_1_8=32639, var_1_9=0] [L20] COND FALSE !(!cond) [L91] RET assume_abort_if_not((var_1_15 >= -922337.2036854765600e+13F && var_1_15 <= -1.0e-20F) || (var_1_15 <= 9223372.036854765600e+12F && var_1_15 >= 1.0e-20F )) VAL [isInitial=1, last_1_var_1_1=2, last_1_var_1_6=128, var_1_10=128, var_1_11=32767, var_1_12=2, var_1_13=0, var_1_14=11/2, var_1_15=2, var_1_1=2, var_1_4=0, var_1_5=-258, var_1_6=128, var_1_7=259, var_1_8=32639, var_1_9=0] [L106] RET updateVariables() [L107] CALL step() [L40] signed long int stepLocal_1 = last_1_var_1_6; [L41] signed long int stepLocal_0 = last_1_var_1_6; [L42] COND TRUE stepLocal_0 >= (var_1_11 - var_1_8) [L43] COND FALSE !((var_1_7 / var_1_12) <= stepLocal_1) [L46] COND FALSE !(\read(var_1_13)) [L49] var_1_10 = var_1_5 [L55] COND FALSE !(! (var_1_10 <= last_1_var_1_1)) [L58] COND FALSE !(var_1_4 > (var_1_10 / var_1_7)) [L61] var_1_14 = var_1_15 [L107] RET step() [L108] CALL, EXPR property() [L98-L99] return ((((! (var_1_10 <= last_1_var_1_1)) ? (var_1_1 == ((signed short int) (var_1_4 + var_1_5))) : 1) && ((var_1_4 > (var_1_10 / var_1_7)) ? (var_1_6 == ((unsigned short int) (var_1_8 + var_1_9))) : 1)) && ((last_1_var_1_6 >= (var_1_11 - var_1_8)) ? (((var_1_7 / var_1_12) <= last_1_var_1_6) ? (var_1_10 == ((signed long int) ((last_1_var_1_6 - var_1_8) + -32))) : (var_1_13 ? (var_1_10 == ((signed long int) ((((var_1_11) < (var_1_7)) ? (var_1_11) : (var_1_7))))) : (var_1_10 == ((signed long int) var_1_5)))) : (var_1_10 == ((signed long int) last_1_var_1_1)))) && (var_1_14 == ((float) var_1_15)) ; [L108] RET, EXPR property() [L108] CALL __VERIFIER_assert(property()) [L19] COND TRUE !(cond) VAL [\old(cond)=0, cond=0, isInitial=1, last_1_var_1_1=2, last_1_var_1_6=128, var_1_10=-258, var_1_11=32767, var_1_12=2, var_1_13=0, var_1_14=2, var_1_15=2, var_1_1=2, var_1_4=0, var_1_5=-258, var_1_6=128, var_1_7=259, var_1_8=32639, var_1_9=0] [L19] reach_error() VAL [\old(cond)=0, cond=0, isInitial=1, last_1_var_1_1=2, last_1_var_1_6=128, var_1_10=-258, var_1_11=32767, var_1_12=2, var_1_13=0, var_1_14=2, var_1_15=2, var_1_1=2, var_1_4=0, var_1_5=-258, var_1_6=128, var_1_7=259, var_1_8=32639, var_1_9=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 37 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.0s, OverallIterations: 1, TraceHistogramMax: 19, 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=37occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 70 NumberOfCodeBlocks, 70 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 00:56:41,653 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8ea34aa-6e7c-4484-9963-472f1e12c812/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_a8ea34aa-6e7c-4484-9963-472f1e12c812/bin/utaipan-verify-NcY6lQBIFX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8ea34aa-6e7c-4484-9963-472f1e12c812/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_a8ea34aa-6e7c-4484-9963-472f1e12c812/bin/utaipan-verify-NcY6lQBIFX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8ea34aa-6e7c-4484-9963-472f1e12c812/bin/utaipan-verify-NcY6lQBIFX/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-67.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8ea34aa-6e7c-4484-9963-472f1e12c812/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_a8ea34aa-6e7c-4484-9963-472f1e12c812/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 fd38e103082400978e963855c45ad16aea167d5793b2ed8eb8338e9d66135232 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 00:56:44,302 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 00:56:44,434 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8ea34aa-6e7c-4484-9963-472f1e12c812/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2023-11-12 00:56:44,443 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 00:56:44,444 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 00:56:44,489 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 00:56:44,490 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 00:56:44,491 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 00:56:44,492 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 00:56:44,497 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 00:56:44,498 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-12 00:56:44,498 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-12 00:56:44,498 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-12 00:56:44,500 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-12 00:56:44,500 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-12 00:56:44,501 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-12 00:56:44,502 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 00:56:44,502 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 00:56:44,503 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 00:56:44,504 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 00:56:44,504 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 00:56:44,505 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 00:56:44,505 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 00:56:44,506 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 00:56:44,506 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-12 00:56:44,506 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-12 00:56:44,507 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-12 00:56:44,507 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 00:56:44,508 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 00:56:44,508 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 00:56:44,509 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 00:56:44,510 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-12 00:56:44,510 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 00:56:44,510 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:56:44,511 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 00:56:44,511 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 00:56:44,511 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 00:56:44,511 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-11-12 00:56:44,512 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-12 00:56:44,513 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 00:56:44,513 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-12 00:56:44,513 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 00:56:44,514 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_a8ea34aa-6e7c-4484-9963-472f1e12c812/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8ea34aa-6e7c-4484-9963-472f1e12c812/bin/utaipan-verify-NcY6lQBIFX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fd38e103082400978e963855c45ad16aea167d5793b2ed8eb8338e9d66135232 [2023-11-12 00:56:44,912 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 00:56:44,937 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 00:56:44,942 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 00:56:44,944 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 00:56:44,944 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 00:56:44,945 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8ea34aa-6e7c-4484-9963-472f1e12c812/bin/utaipan-verify-NcY6lQBIFX/../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-67.i [2023-11-12 00:56:48,103 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 00:56:48,381 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 00:56:48,382 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8ea34aa-6e7c-4484-9963-472f1e12c812/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-67.i [2023-11-12 00:56:48,391 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8ea34aa-6e7c-4484-9963-472f1e12c812/bin/utaipan-verify-NcY6lQBIFX/data/fba7314d3/86e6e405ee624c4cb27438397eeef529/FLAGb6da73b49 [2023-11-12 00:56:48,407 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8ea34aa-6e7c-4484-9963-472f1e12c812/bin/utaipan-verify-NcY6lQBIFX/data/fba7314d3/86e6e405ee624c4cb27438397eeef529 [2023-11-12 00:56:48,410 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 00:56:48,411 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 00:56:48,413 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 00:56:48,413 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 00:56:48,418 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 00:56:48,419 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:56:48" (1/1) ... [2023-11-12 00:56:48,420 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14dd0e2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:56:48, skipping insertion in model container [2023-11-12 00:56:48,421 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:56:48" (1/1) ... [2023-11-12 00:56:48,453 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 00:56:48,599 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_a8ea34aa-6e7c-4484-9963-472f1e12c812/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-67.i[915,928] [2023-11-12 00:56:48,662 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:56:48,694 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 00:56:48,712 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_a8ea34aa-6e7c-4484-9963-472f1e12c812/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-67.i[915,928] [2023-11-12 00:56:48,741 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:56:48,760 INFO L206 MainTranslator]: Completed translation [2023-11-12 00:56:48,760 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:56:48 WrapperNode [2023-11-12 00:56:48,760 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 00:56:48,761 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 00:56:48,762 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 00:56:48,762 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 00:56:48,769 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:56:48" (1/1) ... [2023-11-12 00:56:48,795 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:56:48" (1/1) ... [2023-11-12 00:56:48,852 INFO L138 Inliner]: procedures = 27, calls = 32, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 111 [2023-11-12 00:56:48,853 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 00:56:48,854 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 00:56:48,854 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 00:56:48,854 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 00:56:48,879 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:56:48" (1/1) ... [2023-11-12 00:56:48,880 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:56:48" (1/1) ... [2023-11-12 00:56:48,884 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:56:48" (1/1) ... [2023-11-12 00:56:48,884 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:56:48" (1/1) ... [2023-11-12 00:56:48,909 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:56:48" (1/1) ... [2023-11-12 00:56:48,914 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:56:48" (1/1) ... [2023-11-12 00:56:48,916 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:56:48" (1/1) ... [2023-11-12 00:56:48,918 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:56:48" (1/1) ... [2023-11-12 00:56:48,922 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 00:56:48,923 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 00:56:48,923 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 00:56:48,924 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 00:56:48,935 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:56:48" (1/1) ... [2023-11-12 00:56:48,941 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:56:48,961 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8ea34aa-6e7c-4484-9963-472f1e12c812/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:56:48,974 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8ea34aa-6e7c-4484-9963-472f1e12c812/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 00:56:49,008 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8ea34aa-6e7c-4484-9963-472f1e12c812/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 00:56:49,023 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 00:56:49,024 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-12 00:56:49,024 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-12 00:56:49,024 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-12 00:56:49,024 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 00:56:49,025 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 00:56:49,146 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 00:56:49,148 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 00:56:49,577 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 00:56:49,584 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 00:56:49,590 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-12 00:56:49,593 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:56:49 BoogieIcfgContainer [2023-11-12 00:56:49,593 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 00:56:49,597 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 00:56:49,597 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 00:56:49,601 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 00:56:49,601 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 12:56:48" (1/3) ... [2023-11-12 00:56:49,602 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4cb8b916 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:56:49, skipping insertion in model container [2023-11-12 00:56:49,602 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:56:48" (2/3) ... [2023-11-12 00:56:49,603 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4cb8b916 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:56:49, skipping insertion in model container [2023-11-12 00:56:49,603 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:56:49" (3/3) ... [2023-11-12 00:56:49,605 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_loopvsstraightlinecode_25-while_file-67.i [2023-11-12 00:56:49,627 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 00:56:49,627 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-12 00:56:49,686 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 00:56:49,694 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;@37ad05cc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-12 00:56:49,694 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-12 00:56:49,699 INFO L276 IsEmpty]: Start isEmpty. Operand has 53 states, 31 states have (on average 1.3225806451612903) internal successors, (41), 32 states have internal predecessors, (41), 19 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2023-11-12 00:56:49,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2023-11-12 00:56:49,714 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:56:49,715 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:56:49,716 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:56:49,721 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:56:49,722 INFO L85 PathProgramCache]: Analyzing trace with hash 442203561, now seen corresponding path program 1 times [2023-11-12 00:56:49,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-12 00:56:49,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1780885812] [2023-11-12 00:56:49,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:56:49,738 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 00:56:49,738 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8ea34aa-6e7c-4484-9963-472f1e12c812/bin/utaipan-verify-NcY6lQBIFX/mathsat [2023-11-12 00:56:49,744 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8ea34aa-6e7c-4484-9963-472f1e12c812/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 00:56:49,776 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8ea34aa-6e7c-4484-9963-472f1e12c812/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 00:56:50,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:56:50,055 INFO L262 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-12 00:56:50,067 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:56:50,133 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 356 proven. 0 refuted. 0 times theorem prover too weak. 328 trivial. 0 not checked. [2023-11-12 00:56:50,134 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 00:56:50,134 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-12 00:56:50,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1780885812] [2023-11-12 00:56:50,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1780885812] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:56:50,136 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:56:50,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 00:56:50,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683876793] [2023-11-12 00:56:50,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:56:50,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-12 00:56:50,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-12 00:56:50,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-12 00:56:50,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-12 00:56:50,193 INFO L87 Difference]: Start difference. First operand has 53 states, 31 states have (on average 1.3225806451612903) internal successors, (41), 32 states have internal predecessors, (41), 19 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) Second operand has 2 states, 2 states have (on average 14.5) internal successors, (29), 2 states have internal predecessors, (29), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2023-11-12 00:56:50,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:56:50,242 INFO L93 Difference]: Finished difference Result 99 states and 171 transitions. [2023-11-12 00:56:50,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-12 00:56:50,244 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 14.5) internal successors, (29), 2 states have internal predecessors, (29), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 117 [2023-11-12 00:56:50,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:56:50,253 INFO L225 Difference]: With dead ends: 99 [2023-11-12 00:56:50,253 INFO L226 Difference]: Without dead ends: 49 [2023-11-12 00:56:50,258 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 116 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 00:56:50,262 INFO L413 NwaCegarLoop]: 72 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, 72 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 00:56:50,263 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 00:56:50,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2023-11-12 00:56:50,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2023-11-12 00:56:50,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 28 states have (on average 1.2142857142857142) internal successors, (34), 28 states have internal predecessors, (34), 19 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2023-11-12 00:56:50,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 72 transitions. [2023-11-12 00:56:50,325 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 72 transitions. Word has length 117 [2023-11-12 00:56:50,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:56:50,325 INFO L495 AbstractCegarLoop]: Abstraction has 49 states and 72 transitions. [2023-11-12 00:56:50,326 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 14.5) internal successors, (29), 2 states have internal predecessors, (29), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2023-11-12 00:56:50,326 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 72 transitions. [2023-11-12 00:56:50,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2023-11-12 00:56:50,332 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:56:50,333 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:56:50,357 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8ea34aa-6e7c-4484-9963-472f1e12c812/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 00:56:50,548 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8ea34aa-6e7c-4484-9963-472f1e12c812/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 00:56:50,548 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:56:50,549 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:56:50,549 INFO L85 PathProgramCache]: Analyzing trace with hash -1663638361, now seen corresponding path program 1 times [2023-11-12 00:56:50,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-12 00:56:50,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [285578562] [2023-11-12 00:56:50,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:56:50,551 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 00:56:50,551 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8ea34aa-6e7c-4484-9963-472f1e12c812/bin/utaipan-verify-NcY6lQBIFX/mathsat [2023-11-12 00:56:50,552 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8ea34aa-6e7c-4484-9963-472f1e12c812/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 00:56:50,576 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8ea34aa-6e7c-4484-9963-472f1e12c812/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 00:56:50,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:56:50,829 INFO L262 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-12 00:56:50,838 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:56:51,315 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-11-12 00:56:51,316 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 00:56:51,316 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-12 00:56:51,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [285578562] [2023-11-12 00:56:51,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [285578562] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:56:51,318 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:56:51,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 00:56:51,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180279149] [2023-11-12 00:56:51,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:56:51,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 00:56:51,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-12 00:56:51,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 00:56:51,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-12 00:56:51,327 INFO L87 Difference]: Start difference. First operand 49 states and 72 transitions. Second operand has 5 states, 5 states have (on average 5.0) internal successors, (25), 4 states have internal predecessors, (25), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-11-12 00:56:52,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:56:52,104 INFO L93 Difference]: Finished difference Result 196 states and 289 transitions. [2023-11-12 00:56:52,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-12 00:56:52,112 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 4 states have internal predecessors, (25), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 117 [2023-11-12 00:56:52,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:56:52,115 INFO L225 Difference]: With dead ends: 196 [2023-11-12 00:56:52,116 INFO L226 Difference]: Without dead ends: 150 [2023-11-12 00:56:52,117 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-11-12 00:56:52,118 INFO L413 NwaCegarLoop]: 121 mSDtfsCounter, 93 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 280 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-12 00:56:52,119 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 280 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-12 00:56:52,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2023-11-12 00:56:52,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 94. [2023-11-12 00:56:52,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 53 states have (on average 1.2264150943396226) internal successors, (65), 53 states have internal predecessors, (65), 38 states have call successors, (38), 2 states have call predecessors, (38), 2 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2023-11-12 00:56:52,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 141 transitions. [2023-11-12 00:56:52,158 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 141 transitions. Word has length 117 [2023-11-12 00:56:52,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:56:52,159 INFO L495 AbstractCegarLoop]: Abstraction has 94 states and 141 transitions. [2023-11-12 00:56:52,159 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 4 states have internal predecessors, (25), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-11-12 00:56:52,159 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 141 transitions. [2023-11-12 00:56:52,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2023-11-12 00:56:52,161 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:56:52,162 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:56:52,182 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8ea34aa-6e7c-4484-9963-472f1e12c812/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 00:56:52,377 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8ea34aa-6e7c-4484-9963-472f1e12c812/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 00:56:52,378 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:56:52,378 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:56:52,378 INFO L85 PathProgramCache]: Analyzing trace with hash 111369001, now seen corresponding path program 1 times [2023-11-12 00:56:52,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-12 00:56:52,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1505977778] [2023-11-12 00:56:52,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:56:52,380 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 00:56:52,380 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8ea34aa-6e7c-4484-9963-472f1e12c812/bin/utaipan-verify-NcY6lQBIFX/mathsat [2023-11-12 00:56:52,381 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8ea34aa-6e7c-4484-9963-472f1e12c812/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 00:56:52,384 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8ea34aa-6e7c-4484-9963-472f1e12c812/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 00:56:52,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:56:52,603 INFO L262 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 18 conjunts are in the unsatisfiable core [2023-11-12 00:56:52,611 INFO L285 TraceCheckSpWp]: Computing forward predicates...