./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-70.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_645dffc7-f147-4cd4-89db-ff2900727ed3/bin/utaipan-verify-NcY6lQBIFX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_645dffc7-f147-4cd4-89db-ff2900727ed3/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_645dffc7-f147-4cd4-89db-ff2900727ed3/bin/utaipan-verify-NcY6lQBIFX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_645dffc7-f147-4cd4-89db-ff2900727ed3/bin/utaipan-verify-NcY6lQBIFX/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-70.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_645dffc7-f147-4cd4-89db-ff2900727ed3/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_645dffc7-f147-4cd4-89db-ff2900727ed3/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 3ccbd3d527b155627328a35d6caa52dc0505af33db01f6600e6e4ac6df0debf6 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 00:13:01,275 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 00:13:01,406 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_645dffc7-f147-4cd4-89db-ff2900727ed3/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-11-12 00:13:01,419 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 00:13:01,420 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 00:13:01,461 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 00:13:01,462 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 00:13:01,463 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 00:13:01,464 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 00:13:01,471 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 00:13:01,471 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-12 00:13:01,473 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-12 00:13:01,474 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-12 00:13:01,476 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-12 00:13:01,476 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-12 00:13:01,477 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-12 00:13:01,477 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-12 00:13:01,478 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-12 00:13:01,478 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-12 00:13:01,479 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-12 00:13:01,480 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-12 00:13:01,480 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-12 00:13:01,482 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 00:13:01,482 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 00:13:01,483 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 00:13:01,483 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 00:13:01,484 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 00:13:01,484 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 00:13:01,485 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 00:13:01,485 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 00:13:01,486 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 00:13:01,487 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 00:13:01,487 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 00:13:01,487 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 00:13:01,488 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 00:13:01,488 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 00:13:01,488 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:13:01,489 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 00:13:01,489 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 00:13:01,489 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 00:13:01,489 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-12 00:13:01,490 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 00:13:01,490 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 00:13:01,490 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-12 00:13:01,491 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 00:13:01,491 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_645dffc7-f147-4cd4-89db-ff2900727ed3/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_645dffc7-f147-4cd4-89db-ff2900727ed3/bin/utaipan-verify-NcY6lQBIFX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3ccbd3d527b155627328a35d6caa52dc0505af33db01f6600e6e4ac6df0debf6 [2023-11-12 00:13:01,804 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 00:13:01,825 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 00:13:01,828 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 00:13:01,829 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 00:13:01,830 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 00:13:01,831 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_645dffc7-f147-4cd4-89db-ff2900727ed3/bin/utaipan-verify-NcY6lQBIFX/../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-70.i [2023-11-12 00:13:04,931 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 00:13:05,202 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 00:13:05,204 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_645dffc7-f147-4cd4-89db-ff2900727ed3/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-70.i [2023-11-12 00:13:05,215 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_645dffc7-f147-4cd4-89db-ff2900727ed3/bin/utaipan-verify-NcY6lQBIFX/data/395a7b50f/8a3c90dfec464be3bc4ec27a509f82a0/FLAG9f205c134 [2023-11-12 00:13:05,233 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_645dffc7-f147-4cd4-89db-ff2900727ed3/bin/utaipan-verify-NcY6lQBIFX/data/395a7b50f/8a3c90dfec464be3bc4ec27a509f82a0 [2023-11-12 00:13:05,241 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 00:13:05,243 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 00:13:05,244 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 00:13:05,245 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 00:13:05,251 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 00:13:05,252 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:13:05" (1/1) ... [2023-11-12 00:13:05,253 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c9aad50 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:13:05, skipping insertion in model container [2023-11-12 00:13:05,254 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:13:05" (1/1) ... [2023-11-12 00:13:05,294 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 00:13:05,489 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_645dffc7-f147-4cd4-89db-ff2900727ed3/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-70.i[915,928] [2023-11-12 00:13:05,543 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:13:05,554 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 00:13:05,567 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_645dffc7-f147-4cd4-89db-ff2900727ed3/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-70.i[915,928] [2023-11-12 00:13:05,592 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:13:05,618 INFO L206 MainTranslator]: Completed translation [2023-11-12 00:13:05,618 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:13:05 WrapperNode [2023-11-12 00:13:05,619 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 00:13:05,621 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 00:13:05,622 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 00:13:05,622 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 00:13:05,630 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:13:05" (1/1) ... [2023-11-12 00:13:05,644 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:13:05" (1/1) ... [2023-11-12 00:13:05,688 INFO L138 Inliner]: procedures = 26, calls = 26, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 120 [2023-11-12 00:13:05,688 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 00:13:05,689 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 00:13:05,689 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 00:13:05,690 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 00:13:05,699 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:13:05" (1/1) ... [2023-11-12 00:13:05,700 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:13:05" (1/1) ... [2023-11-12 00:13:05,703 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:13:05" (1/1) ... [2023-11-12 00:13:05,703 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:13:05" (1/1) ... [2023-11-12 00:13:05,713 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:13:05" (1/1) ... [2023-11-12 00:13:05,716 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:13:05" (1/1) ... [2023-11-12 00:13:05,720 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:13:05" (1/1) ... [2023-11-12 00:13:05,722 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:13:05" (1/1) ... [2023-11-12 00:13:05,726 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 00:13:05,728 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 00:13:05,729 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 00:13:05,733 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 00:13:05,734 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:13:05" (1/1) ... [2023-11-12 00:13:05,751 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:13:05,765 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_645dffc7-f147-4cd4-89db-ff2900727ed3/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:13:05,780 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_645dffc7-f147-4cd4-89db-ff2900727ed3/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 00:13:05,808 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_645dffc7-f147-4cd4-89db-ff2900727ed3/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 00:13:05,826 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 00:13:05,826 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-12 00:13:05,827 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-12 00:13:05,827 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 00:13:05,827 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 00:13:05,827 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 00:13:05,955 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 00:13:05,959 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 00:13:06,391 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 00:13:06,661 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 00:13:06,661 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-12 00:13:06,664 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:13:06 BoogieIcfgContainer [2023-11-12 00:13:06,665 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 00:13:06,670 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 00:13:06,671 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 00:13:06,674 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 00:13:06,675 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 12:13:05" (1/3) ... [2023-11-12 00:13:06,676 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15e33394 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:13:06, skipping insertion in model container [2023-11-12 00:13:06,676 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:13:05" (2/3) ... [2023-11-12 00:13:06,679 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15e33394 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:13:06, skipping insertion in model container [2023-11-12 00:13:06,680 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:13:06" (3/3) ... [2023-11-12 00:13:06,681 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_loopvsstraightlinecode_25-while_file-70.i [2023-11-12 00:13:06,702 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 00:13:06,703 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-12 00:13:06,759 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 00:13:06,768 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;@4f80b9b1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-12 00:13:06,769 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-12 00:13:06,775 INFO L276 IsEmpty]: Start isEmpty. Operand has 29 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 14 states have internal predecessors, (16), 13 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-12 00:13:06,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-11-12 00:13:06,790 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:13:06,791 INFO L195 NwaCegarLoop]: trace histogram [13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:13:06,792 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:13:06,801 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:13:06,801 INFO L85 PathProgramCache]: Analyzing trace with hash -1383524069, now seen corresponding path program 1 times [2023-11-12 00:13:06,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:13:06,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164040749] [2023-11-12 00:13:06,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:13:06,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:13:07,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 00:13:07,214 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-12 00:13:07,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 00:13:07,370 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-11-12 00:13:07,372 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-12 00:13:07,373 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-12 00:13:07,376 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-12 00:13:07,381 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-11-12 00:13:07,386 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-11-12 00:13:07,461 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 12:13:07 BoogieIcfgContainer [2023-11-12 00:13:07,461 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-12 00:13:07,464 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-12 00:13:07,464 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-12 00:13:07,464 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-12 00:13:07,465 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:13:06" (3/4) ... [2023-11-12 00:13:07,466 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-12 00:13:07,467 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-12 00:13:07,468 INFO L158 Benchmark]: Toolchain (without parser) took 2225.03ms. Allocated memory was 146.8MB in the beginning and 186.6MB in the end (delta: 39.8MB). Free memory was 100.9MB in the beginning and 94.9MB in the end (delta: 6.0MB). Peak memory consumption was 48.0MB. Max. memory is 16.1GB. [2023-11-12 00:13:07,468 INFO L158 Benchmark]: CDTParser took 0.36ms. Allocated memory is still 146.8MB. Free memory was 93.6MB in the beginning and 93.5MB in the end (delta: 139.8kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-12 00:13:07,469 INFO L158 Benchmark]: CACSL2BoogieTranslator took 374.81ms. Allocated memory is still 146.8MB. Free memory was 100.4MB in the beginning and 88.3MB in the end (delta: 12.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-12 00:13:07,470 INFO L158 Benchmark]: Boogie Procedure Inliner took 67.08ms. Allocated memory is still 146.8MB. Free memory was 87.9MB in the beginning and 85.2MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-12 00:13:07,470 INFO L158 Benchmark]: Boogie Preprocessor took 37.37ms. Allocated memory is still 146.8MB. Free memory was 85.2MB in the beginning and 83.6MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-12 00:13:07,471 INFO L158 Benchmark]: RCFGBuilder took 936.54ms. Allocated memory was 146.8MB in the beginning and 186.6MB in the end (delta: 39.8MB). Free memory was 83.6MB in the beginning and 131.6MB in the end (delta: -48.1MB). Peak memory consumption was 27.0MB. Max. memory is 16.1GB. [2023-11-12 00:13:07,472 INFO L158 Benchmark]: TraceAbstraction took 790.86ms. Allocated memory is still 186.6MB. Free memory was 131.6MB in the beginning and 96.0MB in the end (delta: 35.6MB). Peak memory consumption was 35.7MB. Max. memory is 16.1GB. [2023-11-12 00:13:07,472 INFO L158 Benchmark]: Witness Printer took 3.24ms. Allocated memory is still 186.6MB. Free memory was 95.9MB in the beginning and 94.9MB in the end (delta: 982.7kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-12 00:13:07,476 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36ms. Allocated memory is still 146.8MB. Free memory was 93.6MB in the beginning and 93.5MB in the end (delta: 139.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 374.81ms. Allocated memory is still 146.8MB. Free memory was 100.4MB in the beginning and 88.3MB in the end (delta: 12.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 67.08ms. Allocated memory is still 146.8MB. Free memory was 87.9MB in the beginning and 85.2MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 37.37ms. Allocated memory is still 146.8MB. Free memory was 85.2MB in the beginning and 83.6MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 936.54ms. Allocated memory was 146.8MB in the beginning and 186.6MB in the end (delta: 39.8MB). Free memory was 83.6MB in the beginning and 131.6MB in the end (delta: -48.1MB). Peak memory consumption was 27.0MB. Max. memory is 16.1GB. * TraceAbstraction took 790.86ms. Allocated memory is still 186.6MB. Free memory was 131.6MB in the beginning and 96.0MB in the end (delta: 35.6MB). Peak memory consumption was 35.7MB. Max. memory is 16.1GB. * Witness Printer took 3.24ms. Allocated memory is still 186.6MB. Free memory was 95.9MB in the beginning and 94.9MB in the end (delta: 982.7kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 19]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 77, overapproximation of shiftLeft at line 40. Possible FailurePath: [L21] unsigned char isInitial = 0; [L22] unsigned short int var_1_1 = 0; [L23] unsigned char var_1_2 = 0; [L24] unsigned short int var_1_3 = 1; [L25] unsigned short int var_1_4 = 19138; [L26] unsigned short int var_1_5 = 0; [L27] signed char var_1_6 = 25; [L28] signed long int var_1_7 = -50; [L29] double var_1_8 = 8.3; [L30] unsigned char var_1_9 = 128; [L31] unsigned char var_1_10 = 1; [L32] double var_1_11 = 256.2; [L81] isInitial = 1 [L82] FCALL initially() [L83] COND TRUE 1 [L84] FCALL updateLastVariables() [L85] CALL updateVariables() [L53] var_1_2 = __VERIFIER_nondet_uchar() [L54] CALL assume_abort_if_not(var_1_2 >= 0) VAL [\old(cond)=1, isInitial=1, var_1_10=1, var_1_11=1281/5, var_1_1=0, var_1_3=1, var_1_4=19138, var_1_5=0, var_1_6=25, var_1_7=-50, var_1_8=83/10, var_1_9=128] [L20] COND FALSE !(!cond) [L54] RET assume_abort_if_not(var_1_2 >= 0) VAL [isInitial=1, var_1_10=1, var_1_11=1281/5, var_1_1=0, var_1_3=1, var_1_4=19138, var_1_5=0, var_1_6=25, var_1_7=-50, var_1_8=83/10, var_1_9=128] [L55] CALL assume_abort_if_not(var_1_2 <= 1) VAL [\old(cond)=1, isInitial=1, var_1_10=1, var_1_11=1281/5, var_1_1=0, var_1_2=1, var_1_3=1, var_1_4=19138, var_1_5=0, var_1_6=25, var_1_7=-50, var_1_8=83/10, var_1_9=128] [L20] COND FALSE !(!cond) [L55] RET assume_abort_if_not(var_1_2 <= 1) VAL [isInitial=1, var_1_10=1, var_1_11=1281/5, var_1_1=0, var_1_2=1, var_1_3=1, var_1_4=19138, var_1_5=0, var_1_6=25, var_1_7=-50, var_1_8=83/10, var_1_9=128] [L56] var_1_3 = __VERIFIER_nondet_ushort() [L57] CALL assume_abort_if_not(var_1_3 >= 0) VAL [\old(cond)=1, isInitial=1, var_1_10=1, var_1_11=1281/5, var_1_1=0, var_1_2=1, var_1_3=123, var_1_4=19138, var_1_5=0, var_1_6=25, var_1_7=-50, var_1_8=83/10, var_1_9=128] [L20] COND FALSE !(!cond) [L57] RET assume_abort_if_not(var_1_3 >= 0) VAL [isInitial=1, var_1_10=1, var_1_11=1281/5, var_1_1=0, var_1_2=1, var_1_3=123, var_1_4=19138, var_1_5=0, var_1_6=25, var_1_7=-50, var_1_8=83/10, var_1_9=128] [L58] CALL assume_abort_if_not(var_1_3 <= 16383) VAL [\old(cond)=1, isInitial=1, var_1_10=1, var_1_11=1281/5, var_1_1=0, var_1_2=1, var_1_3=123, var_1_4=19138, var_1_5=0, var_1_6=25, var_1_7=-50, var_1_8=83/10, var_1_9=128] [L20] COND FALSE !(!cond) [L58] RET assume_abort_if_not(var_1_3 <= 16383) VAL [isInitial=1, var_1_10=1, var_1_11=1281/5, var_1_1=0, var_1_2=1, var_1_3=123, var_1_4=19138, var_1_5=0, var_1_6=25, var_1_7=-50, var_1_8=83/10, var_1_9=128] [L59] var_1_4 = __VERIFIER_nondet_ushort() [L60] CALL assume_abort_if_not(var_1_4 >= 16383) VAL [\old(cond)=1, isInitial=1, var_1_10=1, var_1_11=1281/5, var_1_1=0, var_1_2=1, var_1_3=123, var_1_4=32767, var_1_5=0, var_1_6=25, var_1_7=-50, var_1_8=83/10, var_1_9=128] [L20] COND FALSE !(!cond) [L60] RET assume_abort_if_not(var_1_4 >= 16383) VAL [isInitial=1, var_1_10=1, var_1_11=1281/5, var_1_1=0, var_1_2=1, var_1_3=123, var_1_4=32767, var_1_5=0, var_1_6=25, var_1_7=-50, var_1_8=83/10, var_1_9=128] [L61] CALL assume_abort_if_not(var_1_4 <= 32767) VAL [\old(cond)=1, isInitial=1, var_1_10=1, var_1_11=1281/5, var_1_1=0, var_1_2=1, var_1_3=123, var_1_4=32767, var_1_5=0, var_1_6=25, var_1_7=-50, var_1_8=83/10, var_1_9=128] [L20] COND FALSE !(!cond) [L61] RET assume_abort_if_not(var_1_4 <= 32767) VAL [isInitial=1, var_1_10=1, var_1_11=1281/5, var_1_1=0, var_1_2=1, var_1_3=123, var_1_4=32767, var_1_5=0, var_1_6=25, var_1_7=-50, var_1_8=83/10, var_1_9=128] [L62] var_1_5 = __VERIFIER_nondet_ushort() [L63] CALL assume_abort_if_not(var_1_5 >= 0) VAL [\old(cond)=1, isInitial=1, var_1_10=1, var_1_11=1281/5, var_1_1=0, var_1_2=1, var_1_3=123, var_1_4=32767, var_1_5=5, var_1_6=25, var_1_7=-50, var_1_8=83/10, var_1_9=128] [L20] COND FALSE !(!cond) [L63] RET assume_abort_if_not(var_1_5 >= 0) VAL [isInitial=1, var_1_10=1, var_1_11=1281/5, var_1_1=0, var_1_2=1, var_1_3=123, var_1_4=32767, var_1_5=5, var_1_6=25, var_1_7=-50, var_1_8=83/10, var_1_9=128] [L64] CALL assume_abort_if_not(var_1_5 <= 16383) VAL [\old(cond)=1, isInitial=1, var_1_10=1, var_1_11=1281/5, var_1_1=0, var_1_2=1, var_1_3=123, var_1_4=32767, var_1_5=5, var_1_6=25, var_1_7=-50, var_1_8=83/10, var_1_9=128] [L20] COND FALSE !(!cond) [L64] RET assume_abort_if_not(var_1_5 <= 16383) VAL [isInitial=1, var_1_10=1, var_1_11=1281/5, var_1_1=0, var_1_2=1, var_1_3=123, var_1_4=32767, var_1_5=5, var_1_6=25, var_1_7=-50, var_1_8=83/10, var_1_9=128] [L65] var_1_9 = __VERIFIER_nondet_uchar() [L66] CALL assume_abort_if_not(var_1_9 >= 127) VAL [\old(cond)=1, isInitial=1, var_1_10=1, var_1_11=1281/5, var_1_1=0, var_1_2=1, var_1_3=123, var_1_4=32767, var_1_5=5, var_1_6=25, var_1_7=-50, var_1_8=83/10, var_1_9=127] [L20] COND FALSE !(!cond) [L66] RET assume_abort_if_not(var_1_9 >= 127) VAL [isInitial=1, var_1_10=1, var_1_11=1281/5, var_1_1=0, var_1_2=1, var_1_3=123, var_1_4=32767, var_1_5=5, var_1_6=25, var_1_7=-50, var_1_8=83/10, var_1_9=127] [L67] CALL assume_abort_if_not(var_1_9 <= 255) VAL [\old(cond)=1, isInitial=1, var_1_10=1, var_1_11=1281/5, var_1_1=0, var_1_2=1, var_1_3=123, var_1_4=32767, var_1_5=5, var_1_6=25, var_1_7=-50, var_1_8=83/10, var_1_9=127] [L20] COND FALSE !(!cond) [L67] RET assume_abort_if_not(var_1_9 <= 255) VAL [isInitial=1, var_1_10=1, var_1_11=1281/5, var_1_1=0, var_1_2=1, var_1_3=123, var_1_4=32767, var_1_5=5, var_1_6=25, var_1_7=-50, var_1_8=83/10, var_1_9=127] [L68] var_1_10 = __VERIFIER_nondet_uchar() [L69] CALL assume_abort_if_not(var_1_10 >= 0) VAL [\old(cond)=1, isInitial=1, var_1_10=4, var_1_11=1281/5, var_1_1=0, var_1_2=1, var_1_3=123, var_1_4=32767, var_1_5=5, var_1_6=25, var_1_7=-50, var_1_8=83/10, var_1_9=127] [L20] COND FALSE !(!cond) [L69] RET assume_abort_if_not(var_1_10 >= 0) VAL [isInitial=1, var_1_10=4, var_1_11=1281/5, var_1_1=0, var_1_2=1, var_1_3=123, var_1_4=32767, var_1_5=5, var_1_6=25, var_1_7=-50, var_1_8=83/10, var_1_9=127] [L70] CALL assume_abort_if_not(var_1_10 <= 127) VAL [\old(cond)=1, isInitial=1, var_1_10=4, var_1_11=1281/5, var_1_1=0, var_1_2=1, var_1_3=123, var_1_4=32767, var_1_5=5, var_1_6=25, var_1_7=-50, var_1_8=83/10, var_1_9=127] [L20] COND FALSE !(!cond) [L70] RET assume_abort_if_not(var_1_10 <= 127) VAL [isInitial=1, var_1_10=4, var_1_11=1281/5, var_1_1=0, var_1_2=1, var_1_3=123, var_1_4=32767, var_1_5=5, var_1_6=25, var_1_7=-50, var_1_8=83/10, var_1_9=127] [L71] var_1_11 = __VERIFIER_nondet_double() [L72] CALL assume_abort_if_not((var_1_11 >= -922337.2036854765600e+13F && var_1_11 <= -1.0e-20F) || (var_1_11 <= 9223372.036854765600e+12F && var_1_11 >= 1.0e-20F )) VAL [\old(cond)=1, isInitial=1, var_1_10=4, var_1_11=83/10, var_1_1=0, var_1_2=1, var_1_3=123, var_1_4=32767, var_1_5=5, var_1_6=25, var_1_7=-50, var_1_8=83/10, var_1_9=127] [L20] COND FALSE !(!cond) [L72] RET assume_abort_if_not((var_1_11 >= -922337.2036854765600e+13F && var_1_11 <= -1.0e-20F) || (var_1_11 <= 9223372.036854765600e+12F && var_1_11 >= 1.0e-20F )) VAL [isInitial=1, var_1_10=4, var_1_11=83/10, var_1_1=0, var_1_2=1, var_1_3=123, var_1_4=32767, var_1_5=5, var_1_6=25, var_1_7=-50, var_1_8=83/10, var_1_9=127] [L85] RET updateVariables() [L86] CALL step() [L36] COND TRUE \read(var_1_2) [L37] var_1_1 = ((17222 - var_1_3) + (((((29916) < (var_1_4)) ? (29916) : (var_1_4))) - var_1_5)) [L39] unsigned short int stepLocal_0 = var_1_4; [L40] EXPR var_1_5 << var_1_1 [L40] EXPR ((var_1_3) > ((var_1_5 << var_1_1))) ? (var_1_3) : ((var_1_5 << var_1_1)) [L40] EXPR var_1_5 << var_1_1 [L40] EXPR ((var_1_3) > ((var_1_5 << var_1_1))) ? (var_1_3) : ((var_1_5 << var_1_1)) [L40] COND TRUE stepLocal_0 <= ((((var_1_3) > ((var_1_5 << var_1_1))) ? (var_1_3) : ((var_1_5 << var_1_1)))) [L41] var_1_7 = (((((var_1_5 - var_1_3)) < (var_1_4)) ? ((var_1_5 - var_1_3)) : (var_1_4))) [L45] COND FALSE !((var_1_9 - ((((5) > (var_1_10)) ? (5) : (var_1_10)))) >= var_1_3) [L48] COND TRUE var_1_2 && (var_1_4 >= (var_1_3 + var_1_7)) [L49] var_1_6 = 8 [L86] RET step() [L87] CALL, EXPR property() [L77] EXPR ((var_1_2 ? (var_1_1 == ((unsigned short int) ((17222 - var_1_3) + (((((29916) < (var_1_4)) ? (29916) : (var_1_4))) - var_1_5)))) : 1) && ((var_1_2 && (var_1_4 >= (var_1_3 + var_1_7))) ? (var_1_6 == ((signed char) 8)) : 1)) && ((var_1_4 <= ((((var_1_3) > ((var_1_5 << var_1_1))) ? (var_1_3) : ((var_1_5 << var_1_1))))) ? (var_1_7 == ((signed long int) (((((var_1_5 - var_1_3)) < (var_1_4)) ? ((var_1_5 - var_1_3)) : (var_1_4))))) : (var_1_7 == ((signed long int) (var_1_5 + (var_1_1 + var_1_4))))) [L77] EXPR var_1_5 << var_1_1 [L77] EXPR ((var_1_3) > ((var_1_5 << var_1_1))) ? (var_1_3) : ((var_1_5 << var_1_1)) [L77] EXPR var_1_5 << var_1_1 [L77] EXPR ((var_1_3) > ((var_1_5 << var_1_1))) ? (var_1_3) : ((var_1_5 << var_1_1)) [L77] EXPR ((var_1_2 ? (var_1_1 == ((unsigned short int) ((17222 - var_1_3) + (((((29916) < (var_1_4)) ? (29916) : (var_1_4))) - var_1_5)))) : 1) && ((var_1_2 && (var_1_4 >= (var_1_3 + var_1_7))) ? (var_1_6 == ((signed char) 8)) : 1)) && ((var_1_4 <= ((((var_1_3) > ((var_1_5 << var_1_1))) ? (var_1_3) : ((var_1_5 << var_1_1))))) ? (var_1_7 == ((signed long int) (((((var_1_5 - var_1_3)) < (var_1_4)) ? ((var_1_5 - var_1_3)) : (var_1_4))))) : (var_1_7 == ((signed long int) (var_1_5 + (var_1_1 + var_1_4))))) [L77-L78] return (((var_1_2 ? (var_1_1 == ((unsigned short int) ((17222 - var_1_3) + (((((29916) < (var_1_4)) ? (29916) : (var_1_4))) - var_1_5)))) : 1) && ((var_1_2 && (var_1_4 >= (var_1_3 + var_1_7))) ? (var_1_6 == ((signed char) 8)) : 1)) && ((var_1_4 <= ((((var_1_3) > ((var_1_5 << var_1_1))) ? (var_1_3) : ((var_1_5 << var_1_1))))) ? (var_1_7 == ((signed long int) (((((var_1_5 - var_1_3)) < (var_1_4)) ? ((var_1_5 - var_1_3)) : (var_1_4))))) : (var_1_7 == ((signed long int) (var_1_5 + (var_1_1 + var_1_4)))))) && (((var_1_9 - ((((5) > (var_1_10)) ? (5) : (var_1_10)))) >= var_1_3) ? (var_1_8 == ((double) var_1_11)) : 1) ; [L87] RET, EXPR property() [L87] CALL __VERIFIER_assert(property()) [L19] COND TRUE !(cond) VAL [\old(cond)=0, cond=0, isInitial=1, var_1_10=4, var_1_11=83/10, var_1_1=47010, var_1_2=1, var_1_3=123, var_1_4=32767, var_1_5=5, var_1_6=8, var_1_7=-118, var_1_8=83/10, var_1_9=127] [L19] reach_error() VAL [\old(cond)=0, cond=0, isInitial=1, var_1_10=4, var_1_11=83/10, var_1_1=47010, var_1_2=1, var_1_3=123, var_1_4=32767, var_1_5=5, var_1_6=8, var_1_7=-118, var_1_8=83/10, var_1_9=127] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 29 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.6s, OverallIterations: 1, TraceHistogramMax: 13, 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=29occurred 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, 50 NumberOfCodeBlocks, 50 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 00:13:07,522 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_645dffc7-f147-4cd4-89db-ff2900727ed3/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_645dffc7-f147-4cd4-89db-ff2900727ed3/bin/utaipan-verify-NcY6lQBIFX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_645dffc7-f147-4cd4-89db-ff2900727ed3/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_645dffc7-f147-4cd4-89db-ff2900727ed3/bin/utaipan-verify-NcY6lQBIFX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_645dffc7-f147-4cd4-89db-ff2900727ed3/bin/utaipan-verify-NcY6lQBIFX/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-70.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_645dffc7-f147-4cd4-89db-ff2900727ed3/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_645dffc7-f147-4cd4-89db-ff2900727ed3/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 3ccbd3d527b155627328a35d6caa52dc0505af33db01f6600e6e4ac6df0debf6 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 00:13:10,263 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 00:13:10,390 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_645dffc7-f147-4cd4-89db-ff2900727ed3/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2023-11-12 00:13:10,398 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 00:13:10,399 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 00:13:10,441 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 00:13:10,442 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 00:13:10,443 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 00:13:10,444 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 00:13:10,452 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 00:13:10,453 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-12 00:13:10,453 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-12 00:13:10,454 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-12 00:13:10,454 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-12 00:13:10,455 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-12 00:13:10,455 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-12 00:13:10,457 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 00:13:10,457 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 00:13:10,457 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 00:13:10,458 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 00:13:10,458 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 00:13:10,459 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 00:13:10,459 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 00:13:10,460 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 00:13:10,460 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-12 00:13:10,461 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-12 00:13:10,461 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-12 00:13:10,462 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 00:13:10,462 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 00:13:10,463 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 00:13:10,464 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 00:13:10,464 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-12 00:13:10,465 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 00:13:10,465 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:13:10,466 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 00:13:10,466 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 00:13:10,466 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 00:13:10,467 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-11-12 00:13:10,467 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-12 00:13:10,468 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 00:13:10,468 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-12 00:13:10,469 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 00:13:10,469 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_645dffc7-f147-4cd4-89db-ff2900727ed3/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_645dffc7-f147-4cd4-89db-ff2900727ed3/bin/utaipan-verify-NcY6lQBIFX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3ccbd3d527b155627328a35d6caa52dc0505af33db01f6600e6e4ac6df0debf6 [2023-11-12 00:13:10,944 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 00:13:10,979 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 00:13:10,982 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 00:13:10,984 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 00:13:10,985 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 00:13:10,986 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_645dffc7-f147-4cd4-89db-ff2900727ed3/bin/utaipan-verify-NcY6lQBIFX/../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-70.i [2023-11-12 00:13:14,072 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 00:13:14,338 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 00:13:14,339 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_645dffc7-f147-4cd4-89db-ff2900727ed3/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-70.i [2023-11-12 00:13:14,349 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_645dffc7-f147-4cd4-89db-ff2900727ed3/bin/utaipan-verify-NcY6lQBIFX/data/fff9a2fe7/aff5cadbc4d9491191dbf223f9685c9c/FLAG9bd6dd8c3 [2023-11-12 00:13:14,371 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_645dffc7-f147-4cd4-89db-ff2900727ed3/bin/utaipan-verify-NcY6lQBIFX/data/fff9a2fe7/aff5cadbc4d9491191dbf223f9685c9c [2023-11-12 00:13:14,378 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 00:13:14,379 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 00:13:14,382 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 00:13:14,382 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 00:13:14,388 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 00:13:14,389 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:13:14" (1/1) ... [2023-11-12 00:13:14,390 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@768cdf1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:13:14, skipping insertion in model container [2023-11-12 00:13:14,390 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:13:14" (1/1) ... [2023-11-12 00:13:14,427 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 00:13:14,619 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_645dffc7-f147-4cd4-89db-ff2900727ed3/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-70.i[915,928] [2023-11-12 00:13:14,685 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:13:14,714 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 00:13:14,733 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_645dffc7-f147-4cd4-89db-ff2900727ed3/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-70.i[915,928] [2023-11-12 00:13:14,767 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:13:14,788 INFO L206 MainTranslator]: Completed translation [2023-11-12 00:13:14,789 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:13:14 WrapperNode [2023-11-12 00:13:14,789 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 00:13:14,791 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 00:13:14,791 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 00:13:14,791 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 00:13:14,799 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:13:14" (1/1) ... [2023-11-12 00:13:14,823 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:13:14" (1/1) ... [2023-11-12 00:13:14,862 INFO L138 Inliner]: procedures = 27, calls = 26, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 89 [2023-11-12 00:13:14,862 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 00:13:14,863 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 00:13:14,863 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 00:13:14,864 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 00:13:14,874 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:13:14" (1/1) ... [2023-11-12 00:13:14,874 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:13:14" (1/1) ... [2023-11-12 00:13:14,878 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:13:14" (1/1) ... [2023-11-12 00:13:14,878 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:13:14" (1/1) ... [2023-11-12 00:13:14,887 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:13:14" (1/1) ... [2023-11-12 00:13:14,890 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:13:14" (1/1) ... [2023-11-12 00:13:14,893 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:13:14" (1/1) ... [2023-11-12 00:13:14,895 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:13:14" (1/1) ... [2023-11-12 00:13:14,898 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 00:13:14,899 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 00:13:14,900 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 00:13:14,900 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 00:13:14,901 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:13:14" (1/1) ... [2023-11-12 00:13:14,907 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:13:14,920 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_645dffc7-f147-4cd4-89db-ff2900727ed3/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:13:14,934 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_645dffc7-f147-4cd4-89db-ff2900727ed3/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 00:13:14,958 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_645dffc7-f147-4cd4-89db-ff2900727ed3/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 00:13:14,984 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 00:13:14,984 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-12 00:13:14,984 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-12 00:13:14,984 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-12 00:13:14,985 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 00:13:14,985 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 00:13:15,089 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 00:13:15,091 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 00:13:15,396 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 00:13:15,403 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 00:13:15,403 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-12 00:13:15,406 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:13:15 BoogieIcfgContainer [2023-11-12 00:13:15,406 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 00:13:15,409 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 00:13:15,409 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 00:13:15,412 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 00:13:15,413 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 12:13:14" (1/3) ... [2023-11-12 00:13:15,414 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16b294fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:13:15, skipping insertion in model container [2023-11-12 00:13:15,414 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:13:14" (2/3) ... [2023-11-12 00:13:15,415 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16b294fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:13:15, skipping insertion in model container [2023-11-12 00:13:15,415 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:13:15" (3/3) ... [2023-11-12 00:13:15,416 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_loopvsstraightlinecode_25-while_file-70.i [2023-11-12 00:13:15,437 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 00:13:15,437 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-12 00:13:15,488 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 00:13:15,495 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;@1bbb424d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-12 00:13:15,496 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-12 00:13:15,500 INFO L276 IsEmpty]: Start isEmpty. Operand has 44 states, 28 states have (on average 1.3214285714285714) internal successors, (37), 29 states have internal predecessors, (37), 13 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-12 00:13:15,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-11-12 00:13:15,513 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:13:15,514 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:13:15,515 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:13:15,521 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:13:15,521 INFO L85 PathProgramCache]: Analyzing trace with hash 1538762934, now seen corresponding path program 1 times [2023-11-12 00:13:15,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-12 00:13:15,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1157060040] [2023-11-12 00:13:15,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:13:15,537 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 00:13:15,537 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_645dffc7-f147-4cd4-89db-ff2900727ed3/bin/utaipan-verify-NcY6lQBIFX/mathsat [2023-11-12 00:13:15,544 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_645dffc7-f147-4cd4-89db-ff2900727ed3/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 00:13:15,584 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_645dffc7-f147-4cd4-89db-ff2900727ed3/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 00:13:15,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:13:15,777 INFO L262 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-12 00:13:15,791 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:13:15,841 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 132 proven. 0 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2023-11-12 00:13:15,841 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 00:13:15,842 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-12 00:13:15,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1157060040] [2023-11-12 00:13:15,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1157060040] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:13:15,843 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:13:15,844 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 00:13:15,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351846022] [2023-11-12 00:13:15,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:13:15,851 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-12 00:13:15,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-12 00:13:15,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-12 00:13:15,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-12 00:13:15,890 INFO L87 Difference]: Start difference. First operand has 44 states, 28 states have (on average 1.3214285714285714) internal successors, (37), 29 states have internal predecessors, (37), 13 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) Second operand has 2 states, 2 states have (on average 14.0) internal successors, (28), 2 states have internal predecessors, (28), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-12 00:13:15,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:13:15,935 INFO L93 Difference]: Finished difference Result 81 states and 133 transitions. [2023-11-12 00:13:15,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-12 00:13:15,938 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 14.0) internal successors, (28), 2 states have internal predecessors, (28), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 86 [2023-11-12 00:13:15,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:13:15,949 INFO L225 Difference]: With dead ends: 81 [2023-11-12 00:13:15,950 INFO L226 Difference]: Without dead ends: 40 [2023-11-12 00:13:15,954 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 85 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 00:13:15,958 INFO L413 NwaCegarLoop]: 56 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, 56 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 00:13:15,960 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 00:13:15,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2023-11-12 00:13:16,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2023-11-12 00:13:16,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 25 states have (on average 1.2) internal successors, (30), 25 states have internal predecessors, (30), 13 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-12 00:13:16,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 56 transitions. [2023-11-12 00:13:16,013 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 56 transitions. Word has length 86 [2023-11-12 00:13:16,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:13:16,014 INFO L495 AbstractCegarLoop]: Abstraction has 40 states and 56 transitions. [2023-11-12 00:13:16,014 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 14.0) internal successors, (28), 2 states have internal predecessors, (28), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-12 00:13:16,014 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 56 transitions. [2023-11-12 00:13:16,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-11-12 00:13:16,021 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:13:16,021 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:13:16,042 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_645dffc7-f147-4cd4-89db-ff2900727ed3/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 00:13:16,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_645dffc7-f147-4cd4-89db-ff2900727ed3/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 00:13:16,236 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:13:16,237 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:13:16,237 INFO L85 PathProgramCache]: Analyzing trace with hash 827841976, now seen corresponding path program 1 times [2023-11-12 00:13:16,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-12 00:13:16,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [520293348] [2023-11-12 00:13:16,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:13:16,239 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 00:13:16,239 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_645dffc7-f147-4cd4-89db-ff2900727ed3/bin/utaipan-verify-NcY6lQBIFX/mathsat [2023-11-12 00:13:16,277 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_645dffc7-f147-4cd4-89db-ff2900727ed3/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 00:13:16,281 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_645dffc7-f147-4cd4-89db-ff2900727ed3/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 00:13:16,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:13:16,459 INFO L262 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-12 00:13:16,468 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:13:17,948 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 187 proven. 69 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-11-12 00:13:17,949 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 00:13:18,316 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2023-11-12 00:13:18,317 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-12 00:13:18,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [520293348] [2023-11-12 00:13:18,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [520293348] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-12 00:13:18,318 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-12 00:13:18,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [16] total 18 [2023-11-12 00:13:18,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899779256] [2023-11-12 00:13:18,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:13:18,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 00:13:18,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-12 00:13:18,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 00:13:18,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=234, Unknown=0, NotChecked=0, Total=306 [2023-11-12 00:13:18,322 INFO L87 Difference]: Start difference. First operand 40 states and 56 transitions. Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-11-12 00:13:18,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:13:18,659 INFO L93 Difference]: Finished difference Result 113 states and 152 transitions. [2023-11-12 00:13:18,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 00:13:18,660 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 86 [2023-11-12 00:13:18,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:13:18,663 INFO L225 Difference]: With dead ends: 113 [2023-11-12 00:13:18,663 INFO L226 Difference]: Without dead ends: 76 [2023-11-12 00:13:18,664 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=76, Invalid=266, Unknown=0, NotChecked=0, Total=342 [2023-11-12 00:13:18,666 INFO L413 NwaCegarLoop]: 58 mSDtfsCounter, 45 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 129 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-12 00:13:18,667 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 129 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-12 00:13:18,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2023-11-12 00:13:18,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 58. [2023-11-12 00:13:18,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 40 states have (on average 1.25) internal successors, (50), 41 states have internal predecessors, (50), 15 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 14 states have call predecessors, (15), 15 states have call successors, (15) [2023-11-12 00:13:18,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 80 transitions. [2023-11-12 00:13:18,683 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 80 transitions. Word has length 86 [2023-11-12 00:13:18,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:13:18,684 INFO L495 AbstractCegarLoop]: Abstraction has 58 states and 80 transitions. [2023-11-12 00:13:18,685 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-11-12 00:13:18,685 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 80 transitions. [2023-11-12 00:13:18,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-11-12 00:13:18,687 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:13:18,687 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:13:18,707 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_645dffc7-f147-4cd4-89db-ff2900727ed3/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 00:13:18,906 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_645dffc7-f147-4cd4-89db-ff2900727ed3/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 00:13:18,906 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:13:18,907 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:13:18,907 INFO L85 PathProgramCache]: Analyzing trace with hash 829689018, now seen corresponding path program 1 times [2023-11-12 00:13:18,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-12 00:13:18,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [188943336] [2023-11-12 00:13:18,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:13:18,910 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 00:13:18,910 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_645dffc7-f147-4cd4-89db-ff2900727ed3/bin/utaipan-verify-NcY6lQBIFX/mathsat [2023-11-12 00:13:18,911 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_645dffc7-f147-4cd4-89db-ff2900727ed3/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 00:13:18,956 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_645dffc7-f147-4cd4-89db-ff2900727ed3/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 00:13:21,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:13:21,752 INFO L262 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 28 conjunts are in the unsatisfiable core [2023-11-12 00:13:21,759 INFO L285 TraceCheckSpWp]: Computing forward predicates...