./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-while_file-63.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 30e01a73 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_390ccde6-b500-4d40-a2d2-b107d2381385/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_390ccde6-b500-4d40-a2d2-b107d2381385/bin/utaipan-verify-mE87zJ7Ire/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_390ccde6-b500-4d40-a2d2-b107d2381385/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_390ccde6-b500-4d40-a2d2-b107d2381385/bin/utaipan-verify-mE87zJ7Ire/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-while_file-63.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_390ccde6-b500-4d40-a2d2-b107d2381385/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_390ccde6-b500-4d40-a2d2-b107d2381385/bin/utaipan-verify-mE87zJ7Ire --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 e08b130d986262ceb0772f034a60f5b23796cc6f800ada70e6af5834a62fdc07 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 21:28:45,718 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 21:28:45,836 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_390ccde6-b500-4d40-a2d2-b107d2381385/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-11-23 21:28:45,844 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 21:28:45,845 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 21:28:45,908 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 21:28:45,909 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 21:28:45,910 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 21:28:45,911 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 21:28:45,914 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 21:28:45,915 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-23 21:28:45,916 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-23 21:28:45,916 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-23 21:28:45,918 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-23 21:28:45,918 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-23 21:28:45,919 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-23 21:28:45,919 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-23 21:28:45,920 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-23 21:28:45,920 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-23 21:28:45,921 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-23 21:28:45,921 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-23 21:28:45,924 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-23 21:28:45,925 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 21:28:45,926 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 21:28:45,944 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-23 21:28:45,945 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 21:28:45,945 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-23 21:28:45,946 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 21:28:45,946 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 21:28:45,947 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 21:28:45,947 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 21:28:45,948 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-23 21:28:45,948 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 21:28:45,948 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 21:28:45,949 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 21:28:45,949 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 21:28:45,949 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 21:28:45,949 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:28:45,950 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 21:28:45,950 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 21:28:45,950 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 21:28:45,951 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-23 21:28:45,951 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 21:28:45,951 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 21:28:45,952 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 21:28:45,952 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-23 21:28:45,952 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 21:28:45,952 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_390ccde6-b500-4d40-a2d2-b107d2381385/bin/utaipan-verify-mE87zJ7Ire/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_390ccde6-b500-4d40-a2d2-b107d2381385/bin/utaipan-verify-mE87zJ7Ire Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e08b130d986262ceb0772f034a60f5b23796cc6f800ada70e6af5834a62fdc07 [2023-11-23 21:28:46,299 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 21:28:46,336 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 21:28:46,339 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 21:28:46,341 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 21:28:46,342 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 21:28:46,343 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_390ccde6-b500-4d40-a2d2-b107d2381385/bin/utaipan-verify-mE87zJ7Ire/../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-while_file-63.i [2023-11-23 21:28:49,658 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 21:28:49,994 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 21:28:49,994 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_390ccde6-b500-4d40-a2d2-b107d2381385/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-while_file-63.i [2023-11-23 21:28:50,008 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_390ccde6-b500-4d40-a2d2-b107d2381385/bin/utaipan-verify-mE87zJ7Ire/data/002089f82/c4c26600a07e4b89bea120a23c988bbe/FLAG1b002f1b3 [2023-11-23 21:28:50,023 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_390ccde6-b500-4d40-a2d2-b107d2381385/bin/utaipan-verify-mE87zJ7Ire/data/002089f82/c4c26600a07e4b89bea120a23c988bbe [2023-11-23 21:28:50,025 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 21:28:50,027 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 21:28:50,028 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 21:28:50,028 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 21:28:50,033 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 21:28:50,034 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:28:50" (1/1) ... [2023-11-23 21:28:50,035 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@614492fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:28:50, skipping insertion in model container [2023-11-23 21:28:50,035 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:28:50" (1/1) ... [2023-11-23 21:28:50,088 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 21:28:50,232 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_390ccde6-b500-4d40-a2d2-b107d2381385/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-while_file-63.i[916,929] [2023-11-23 21:28:50,336 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:28:50,353 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 21:28:50,370 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_390ccde6-b500-4d40-a2d2-b107d2381385/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-while_file-63.i[916,929] [2023-11-23 21:28:50,412 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:28:50,446 INFO L206 MainTranslator]: Completed translation [2023-11-23 21:28:50,446 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:28:50 WrapperNode [2023-11-23 21:28:50,446 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 21:28:50,448 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 21:28:50,448 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 21:28:50,448 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 21:28:50,456 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:28:50" (1/1) ... [2023-11-23 21:28:50,470 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:28:50" (1/1) ... [2023-11-23 21:28:50,544 INFO L138 Inliner]: procedures = 26, calls = 33, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 213 [2023-11-23 21:28:50,544 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 21:28:50,545 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 21:28:50,545 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 21:28:50,546 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 21:28:50,555 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:28:50" (1/1) ... [2023-11-23 21:28:50,555 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:28:50" (1/1) ... [2023-11-23 21:28:50,561 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:28:50" (1/1) ... [2023-11-23 21:28:50,561 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:28:50" (1/1) ... [2023-11-23 21:28:50,581 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:28:50" (1/1) ... [2023-11-23 21:28:50,587 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:28:50" (1/1) ... [2023-11-23 21:28:50,594 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:28:50" (1/1) ... [2023-11-23 21:28:50,612 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:28:50" (1/1) ... [2023-11-23 21:28:50,623 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 21:28:50,630 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 21:28:50,631 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 21:28:50,631 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 21:28:50,632 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:28:50" (1/1) ... [2023-11-23 21:28:50,638 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:28:50,654 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_390ccde6-b500-4d40-a2d2-b107d2381385/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:28:50,698 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_390ccde6-b500-4d40-a2d2-b107d2381385/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 21:28:50,706 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_390ccde6-b500-4d40-a2d2-b107d2381385/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 21:28:50,750 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 21:28:50,750 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-23 21:28:50,750 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-23 21:28:50,750 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 21:28:50,752 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 21:28:50,752 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 21:28:50,890 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 21:28:50,892 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 21:28:51,461 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 21:28:51,893 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 21:28:51,893 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-23 21:28:51,895 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:28:51 BoogieIcfgContainer [2023-11-23 21:28:51,895 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 21:28:51,899 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 21:28:51,899 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 21:28:51,903 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 21:28:51,903 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 09:28:50" (1/3) ... [2023-11-23 21:28:51,905 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17880872 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:28:51, skipping insertion in model container [2023-11-23 21:28:51,905 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:28:50" (2/3) ... [2023-11-23 21:28:51,907 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17880872 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:28:51, skipping insertion in model container [2023-11-23 21:28:51,907 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:28:51" (3/3) ... [2023-11-23 21:28:51,909 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_loopvsstraightlinecode_100-while_file-63.i [2023-11-23 21:28:51,930 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 21:28:51,930 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 21:28:51,987 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 21:28:51,996 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;@393563a1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 21:28:51,998 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 21:28:52,004 INFO L276 IsEmpty]: Start isEmpty. Operand has 40 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 18 states have internal predecessors, (20), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-11-23 21:28:52,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-11-23 21:28:52,018 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:28:52,019 INFO L195 NwaCegarLoop]: trace histogram [20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:28:52,020 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:28:52,030 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:28:52,030 INFO L85 PathProgramCache]: Analyzing trace with hash 1829000089, now seen corresponding path program 1 times [2023-11-23 21:28:52,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:28:52,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852022064] [2023-11-23 21:28:52,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:28:52,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:28:52,294 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 21:28:52,296 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [945187441] [2023-11-23 21:28:52,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:28:52,297 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:28:52,297 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_390ccde6-b500-4d40-a2d2-b107d2381385/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:28:52,299 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_390ccde6-b500-4d40-a2d2-b107d2381385/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:28:52,326 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_390ccde6-b500-4d40-a2d2-b107d2381385/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-23 21:28:52,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 21:28:52,677 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-23 21:28:52,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 21:28:52,895 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-11-23 21:28:52,898 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-23 21:28:52,899 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-23 21:28:52,920 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_390ccde6-b500-4d40-a2d2-b107d2381385/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-23 21:28:53,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_390ccde6-b500-4d40-a2d2-b107d2381385/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-23 21:28:53,115 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-11-23 21:28:53,118 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-23 21:28:53,281 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 09:28:53 BoogieIcfgContainer [2023-11-23 21:28:53,282 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-23 21:28:53,282 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-23 21:28:53,282 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-23 21:28:53,283 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-23 21:28:53,283 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:28:51" (3/4) ... [2023-11-23 21:28:53,289 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-23 21:28:53,290 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-23 21:28:53,292 INFO L158 Benchmark]: Toolchain (without parser) took 3264.67ms. Allocated memory was 169.9MB in the beginning and 205.5MB in the end (delta: 35.7MB). Free memory was 139.5MB in the beginning and 113.6MB in the end (delta: 25.8MB). Peak memory consumption was 59.4MB. Max. memory is 16.1GB. [2023-11-23 21:28:53,292 INFO L158 Benchmark]: CDTParser took 0.27ms. Allocated memory is still 125.8MB. Free memory was 98.2MB in the beginning and 98.2MB in the end (delta: 70.0kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 21:28:53,294 INFO L158 Benchmark]: CACSL2BoogieTranslator took 418.91ms. Allocated memory is still 169.9MB. Free memory was 138.8MB in the beginning and 122.8MB in the end (delta: 16.0MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-11-23 21:28:53,299 INFO L158 Benchmark]: Boogie Procedure Inliner took 96.89ms. Allocated memory is still 169.9MB. Free memory was 122.8MB in the beginning and 116.4MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2023-11-23 21:28:53,300 INFO L158 Benchmark]: Boogie Preprocessor took 78.20ms. Allocated memory is still 169.9MB. Free memory was 116.4MB in the beginning and 113.6MB in the end (delta: 2.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-23 21:28:53,300 INFO L158 Benchmark]: RCFGBuilder took 1265.02ms. Allocated memory was 169.9MB in the beginning and 205.5MB in the end (delta: 35.7MB). Free memory was 113.6MB in the beginning and 162.9MB in the end (delta: -49.3MB). Peak memory consumption was 51.0MB. Max. memory is 16.1GB. [2023-11-23 21:28:53,301 INFO L158 Benchmark]: TraceAbstraction took 1383.14ms. Allocated memory is still 205.5MB. Free memory was 161.9MB in the beginning and 114.7MB in the end (delta: 47.2MB). Peak memory consumption was 48.2MB. Max. memory is 16.1GB. [2023-11-23 21:28:53,301 INFO L158 Benchmark]: Witness Printer took 8.10ms. Allocated memory is still 205.5MB. Free memory was 114.7MB in the beginning and 113.6MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 21:28:53,305 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27ms. Allocated memory is still 125.8MB. Free memory was 98.2MB in the beginning and 98.2MB in the end (delta: 70.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 418.91ms. Allocated memory is still 169.9MB. Free memory was 138.8MB in the beginning and 122.8MB in the end (delta: 16.0MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 96.89ms. Allocated memory is still 169.9MB. Free memory was 122.8MB in the beginning and 116.4MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Preprocessor took 78.20ms. Allocated memory is still 169.9MB. Free memory was 116.4MB in the beginning and 113.6MB in the end (delta: 2.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 1265.02ms. Allocated memory was 169.9MB in the beginning and 205.5MB in the end (delta: 35.7MB). Free memory was 113.6MB in the beginning and 162.9MB in the end (delta: -49.3MB). Peak memory consumption was 51.0MB. Max. memory is 16.1GB. * TraceAbstraction took 1383.14ms. Allocated memory is still 205.5MB. Free memory was 161.9MB in the beginning and 114.7MB in the end (delta: 47.2MB). Peak memory consumption was 48.2MB. Max. memory is 16.1GB. * Witness Printer took 8.10ms. Allocated memory is still 205.5MB. Free memory was 114.7MB in the beginning and 113.6MB in the end (delta: 1.0MB). 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 someBinaryDOUBLEComparisonOperation at line 186, overapproximation of bitwiseAnd at line 56, overapproximation of someBinaryArithmeticDOUBLEoperation at line 138. Possible FailurePath: [L21] unsigned char isInitial = 0; [L22] unsigned char var_1_1 = 4; [L23] unsigned char var_1_5 = 200; [L24] unsigned char var_1_6 = 4; [L25] unsigned char var_1_7 = 100; [L26] signed long int var_1_8 = -256; [L27] unsigned char var_1_9 = 1; [L28] unsigned char var_1_10 = 1; [L29] unsigned char var_1_11 = 0; [L30] unsigned char var_1_12 = 1; [L31] unsigned char var_1_13 = 200; [L32] signed char var_1_14 = 16; [L33] unsigned char var_1_15 = 0; [L34] unsigned char var_1_17 = 1; [L35] signed char var_1_18 = -25; [L36] signed short int var_1_19 = -10; [L37] unsigned char var_1_20 = 2; [L38] unsigned char var_1_22 = 32; [L39] unsigned char var_1_23 = 4; [L40] double var_1_24 = 128.6; [L41] double var_1_25 = 0.6; [L42] double var_1_26 = 99.375; [L43] signed short int var_1_27 = 1; [L44] unsigned long int var_1_29 = 128; [L45] unsigned char last_1_var_1_9 = 1; [L46] unsigned char last_1_var_1_12 = 1; [L47] unsigned char last_1_var_1_13 = 200; [L48] unsigned char last_1_var_1_15 = 0; [L49] signed char last_1_var_1_18 = -25; [L50] signed short int last_1_var_1_19 = -10; [L51] unsigned char last_1_var_1_20 = 2; [L52] signed short int last_1_var_1_27 = 1; [L190] isInitial = 1 [L191] FCALL initially() [L192] COND TRUE 1 [L193] CALL updateLastVariables() [L176] last_1_var_1_9 = var_1_9 [L177] last_1_var_1_12 = var_1_12 [L178] last_1_var_1_13 = var_1_13 [L179] last_1_var_1_15 = var_1_15 [L180] last_1_var_1_18 = var_1_18 [L181] last_1_var_1_19 = var_1_19 [L182] last_1_var_1_20 = var_1_20 [L183] last_1_var_1_27 = var_1_27 [L193] RET updateLastVariables() [L194] CALL updateVariables() [L143] var_1_5 = __VERIFIER_nondet_uchar() [L144] CALL assume_abort_if_not(var_1_5 >= 190) VAL [\old(cond)=1, isInitial=1, last_1_var_1_12=1, last_1_var_1_13=200, last_1_var_1_15=0, last_1_var_1_18=-25, last_1_var_1_19=-10, last_1_var_1_20=2, last_1_var_1_27=1, last_1_var_1_9=1, var_1_10=1, var_1_11=0, var_1_12=1, var_1_13=200, var_1_14=16, var_1_15=0, var_1_17=1, var_1_18=-25, var_1_19=-10, var_1_1=4, var_1_20=2, var_1_22=32, var_1_23=4, var_1_24=643/5, var_1_25=3/5, var_1_26=795/8, var_1_27=1, var_1_29=128, var_1_5=190, var_1_6=4, var_1_7=100, var_1_8=-256, var_1_9=1] [L20] COND FALSE !(!cond) [L144] RET assume_abort_if_not(var_1_5 >= 190) VAL [isInitial=1, last_1_var_1_12=1, last_1_var_1_13=200, last_1_var_1_15=0, last_1_var_1_18=-25, last_1_var_1_19=-10, last_1_var_1_20=2, last_1_var_1_27=1, last_1_var_1_9=1, var_1_10=1, var_1_11=0, var_1_12=1, var_1_13=200, var_1_14=16, var_1_15=0, var_1_17=1, var_1_18=-25, var_1_19=-10, var_1_1=4, var_1_20=2, var_1_22=32, var_1_23=4, var_1_24=643/5, var_1_25=3/5, var_1_26=795/8, var_1_27=1, var_1_29=128, var_1_5=190, var_1_6=4, var_1_7=100, var_1_8=-256, var_1_9=1] [L145] CALL assume_abort_if_not(var_1_5 <= 254) VAL [\old(cond)=1, isInitial=1, last_1_var_1_12=1, last_1_var_1_13=200, last_1_var_1_15=0, last_1_var_1_18=-25, last_1_var_1_19=-10, last_1_var_1_20=2, last_1_var_1_27=1, last_1_var_1_9=1, var_1_10=1, var_1_11=0, var_1_12=1, var_1_13=200, var_1_14=16, var_1_15=0, var_1_17=1, var_1_18=-25, var_1_19=-10, var_1_1=4, var_1_20=2, var_1_22=32, var_1_23=4, var_1_24=643/5, var_1_25=3/5, var_1_26=795/8, var_1_27=1, var_1_29=128, var_1_5=190, var_1_6=4, var_1_7=100, var_1_8=-256, var_1_9=1] [L20] COND FALSE !(!cond) [L145] RET assume_abort_if_not(var_1_5 <= 254) VAL [isInitial=1, last_1_var_1_12=1, last_1_var_1_13=200, last_1_var_1_15=0, last_1_var_1_18=-25, last_1_var_1_19=-10, last_1_var_1_20=2, last_1_var_1_27=1, last_1_var_1_9=1, var_1_10=1, var_1_11=0, var_1_12=1, var_1_13=200, var_1_14=16, var_1_15=0, var_1_17=1, var_1_18=-25, var_1_19=-10, var_1_1=4, var_1_20=2, var_1_22=32, var_1_23=4, var_1_24=643/5, var_1_25=3/5, var_1_26=795/8, var_1_27=1, var_1_29=128, var_1_5=190, var_1_6=4, var_1_7=100, var_1_8=-256, var_1_9=1] [L146] var_1_6 = __VERIFIER_nondet_uchar() [L147] CALL assume_abort_if_not(var_1_6 >= 0) VAL [\old(cond)=1, isInitial=1, last_1_var_1_12=1, last_1_var_1_13=200, last_1_var_1_15=0, last_1_var_1_18=-25, last_1_var_1_19=-10, last_1_var_1_20=2, last_1_var_1_27=1, last_1_var_1_9=1, var_1_10=1, var_1_11=0, var_1_12=1, var_1_13=200, var_1_14=16, var_1_15=0, var_1_17=1, var_1_18=-25, var_1_19=-10, var_1_1=4, var_1_20=2, var_1_22=32, var_1_23=4, var_1_24=643/5, var_1_25=3/5, var_1_26=795/8, var_1_27=1, var_1_29=128, var_1_5=190, var_1_7=100, var_1_8=-256, var_1_9=1] [L20] COND FALSE !(!cond) [L147] RET assume_abort_if_not(var_1_6 >= 0) VAL [isInitial=1, last_1_var_1_12=1, last_1_var_1_13=200, last_1_var_1_15=0, last_1_var_1_18=-25, last_1_var_1_19=-10, last_1_var_1_20=2, last_1_var_1_27=1, last_1_var_1_9=1, var_1_10=1, var_1_11=0, var_1_12=1, var_1_13=200, var_1_14=16, var_1_15=0, var_1_17=1, var_1_18=-25, var_1_19=-10, var_1_1=4, var_1_20=2, var_1_22=32, var_1_23=4, var_1_24=643/5, var_1_25=3/5, var_1_26=795/8, var_1_27=1, var_1_29=128, var_1_5=190, var_1_7=100, var_1_8=-256, var_1_9=1] [L148] CALL assume_abort_if_not(var_1_6 <= 63) VAL [\old(cond)=1, isInitial=1, last_1_var_1_12=1, last_1_var_1_13=200, last_1_var_1_15=0, last_1_var_1_18=-25, last_1_var_1_19=-10, last_1_var_1_20=2, last_1_var_1_27=1, last_1_var_1_9=1, var_1_10=1, var_1_11=0, var_1_12=1, var_1_13=200, var_1_14=16, var_1_15=0, var_1_17=1, var_1_18=-25, var_1_19=-10, var_1_1=4, var_1_20=2, var_1_22=32, var_1_23=4, var_1_24=643/5, var_1_25=3/5, var_1_26=795/8, var_1_27=1, var_1_29=128, var_1_5=190, var_1_6=63, var_1_7=100, var_1_8=-256, var_1_9=1] [L20] COND FALSE !(!cond) [L148] RET assume_abort_if_not(var_1_6 <= 63) VAL [isInitial=1, last_1_var_1_12=1, last_1_var_1_13=200, last_1_var_1_15=0, last_1_var_1_18=-25, last_1_var_1_19=-10, last_1_var_1_20=2, last_1_var_1_27=1, last_1_var_1_9=1, var_1_10=1, var_1_11=0, var_1_12=1, var_1_13=200, var_1_14=16, var_1_15=0, var_1_17=1, var_1_18=-25, var_1_19=-10, var_1_1=4, var_1_20=2, var_1_22=32, var_1_23=4, var_1_24=643/5, var_1_25=3/5, var_1_26=795/8, var_1_27=1, var_1_29=128, var_1_5=190, var_1_6=63, var_1_7=100, var_1_8=-256, var_1_9=1] [L149] var_1_7 = __VERIFIER_nondet_uchar() [L150] CALL assume_abort_if_not(var_1_7 >= 0) VAL [\old(cond)=1, isInitial=1, last_1_var_1_12=1, last_1_var_1_13=200, last_1_var_1_15=0, last_1_var_1_18=-25, last_1_var_1_19=-10, last_1_var_1_20=2, last_1_var_1_27=1, last_1_var_1_9=1, var_1_10=1, var_1_11=0, var_1_12=1, var_1_13=200, var_1_14=16, var_1_15=0, var_1_17=1, var_1_18=-25, var_1_19=-10, var_1_1=4, var_1_20=2, var_1_22=32, var_1_23=4, var_1_24=643/5, var_1_25=3/5, var_1_26=795/8, var_1_27=1, var_1_29=128, var_1_5=190, var_1_6=63, var_1_8=-256, var_1_9=1] [L20] COND FALSE !(!cond) [L150] RET assume_abort_if_not(var_1_7 >= 0) VAL [isInitial=1, last_1_var_1_12=1, last_1_var_1_13=200, last_1_var_1_15=0, last_1_var_1_18=-25, last_1_var_1_19=-10, last_1_var_1_20=2, last_1_var_1_27=1, last_1_var_1_9=1, var_1_10=1, var_1_11=0, var_1_12=1, var_1_13=200, var_1_14=16, var_1_15=0, var_1_17=1, var_1_18=-25, var_1_19=-10, var_1_1=4, var_1_20=2, var_1_22=32, var_1_23=4, var_1_24=643/5, var_1_25=3/5, var_1_26=795/8, var_1_27=1, var_1_29=128, var_1_5=190, var_1_6=63, var_1_8=-256, var_1_9=1] [L151] CALL assume_abort_if_not(var_1_7 <= 127) VAL [\old(cond)=1, isInitial=1, last_1_var_1_12=1, last_1_var_1_13=200, last_1_var_1_15=0, last_1_var_1_18=-25, last_1_var_1_19=-10, last_1_var_1_20=2, last_1_var_1_27=1, last_1_var_1_9=1, var_1_10=1, var_1_11=0, var_1_12=1, var_1_13=200, var_1_14=16, var_1_15=0, var_1_17=1, var_1_18=-25, var_1_19=-10, var_1_1=4, var_1_20=2, var_1_22=32, var_1_23=4, var_1_24=643/5, var_1_25=3/5, var_1_26=795/8, var_1_27=1, var_1_29=128, var_1_5=190, var_1_6=63, var_1_7=0, var_1_8=-256, var_1_9=1] [L20] COND FALSE !(!cond) [L151] RET assume_abort_if_not(var_1_7 <= 127) VAL [isInitial=1, last_1_var_1_12=1, last_1_var_1_13=200, last_1_var_1_15=0, last_1_var_1_18=-25, last_1_var_1_19=-10, last_1_var_1_20=2, last_1_var_1_27=1, last_1_var_1_9=1, var_1_10=1, var_1_11=0, var_1_12=1, var_1_13=200, var_1_14=16, var_1_15=0, var_1_17=1, var_1_18=-25, var_1_19=-10, var_1_1=4, var_1_20=2, var_1_22=32, var_1_23=4, var_1_24=643/5, var_1_25=3/5, var_1_26=795/8, var_1_27=1, var_1_29=128, var_1_5=190, var_1_6=63, var_1_7=0, var_1_8=-256, var_1_9=1] [L152] var_1_10 = __VERIFIER_nondet_uchar() [L153] CALL assume_abort_if_not(var_1_10 >= 1) VAL [\old(cond)=1, isInitial=1, last_1_var_1_12=1, last_1_var_1_13=200, last_1_var_1_15=0, last_1_var_1_18=-25, last_1_var_1_19=-10, last_1_var_1_20=2, last_1_var_1_27=1, last_1_var_1_9=1, var_1_10=1, var_1_11=0, var_1_12=1, var_1_13=200, var_1_14=16, var_1_15=0, var_1_17=1, var_1_18=-25, var_1_19=-10, var_1_1=4, var_1_20=2, var_1_22=32, var_1_23=4, var_1_24=643/5, var_1_25=3/5, var_1_26=795/8, var_1_27=1, var_1_29=128, var_1_5=190, var_1_6=63, var_1_7=0, var_1_8=-256, var_1_9=1] [L20] COND FALSE !(!cond) [L153] RET assume_abort_if_not(var_1_10 >= 1) VAL [isInitial=1, last_1_var_1_12=1, last_1_var_1_13=200, last_1_var_1_15=0, last_1_var_1_18=-25, last_1_var_1_19=-10, last_1_var_1_20=2, last_1_var_1_27=1, last_1_var_1_9=1, var_1_10=1, var_1_11=0, var_1_12=1, var_1_13=200, var_1_14=16, var_1_15=0, var_1_17=1, var_1_18=-25, var_1_19=-10, var_1_1=4, var_1_20=2, var_1_22=32, var_1_23=4, var_1_24=643/5, var_1_25=3/5, var_1_26=795/8, var_1_27=1, var_1_29=128, var_1_5=190, var_1_6=63, var_1_7=0, var_1_8=-256, var_1_9=1] [L154] CALL assume_abort_if_not(var_1_10 <= 1) VAL [\old(cond)=1, isInitial=1, last_1_var_1_12=1, last_1_var_1_13=200, last_1_var_1_15=0, last_1_var_1_18=-25, last_1_var_1_19=-10, last_1_var_1_20=2, last_1_var_1_27=1, last_1_var_1_9=1, var_1_10=1, var_1_11=0, var_1_12=1, var_1_13=200, var_1_14=16, var_1_15=0, var_1_17=1, var_1_18=-25, var_1_19=-10, var_1_1=4, var_1_20=2, var_1_22=32, var_1_23=4, var_1_24=643/5, var_1_25=3/5, var_1_26=795/8, var_1_27=1, var_1_29=128, var_1_5=190, var_1_6=63, var_1_7=0, var_1_8=-256, var_1_9=1] [L20] COND FALSE !(!cond) [L154] RET assume_abort_if_not(var_1_10 <= 1) VAL [isInitial=1, last_1_var_1_12=1, last_1_var_1_13=200, last_1_var_1_15=0, last_1_var_1_18=-25, last_1_var_1_19=-10, last_1_var_1_20=2, last_1_var_1_27=1, last_1_var_1_9=1, var_1_10=1, var_1_11=0, var_1_12=1, var_1_13=200, var_1_14=16, var_1_15=0, var_1_17=1, var_1_18=-25, var_1_19=-10, var_1_1=4, var_1_20=2, var_1_22=32, var_1_23=4, var_1_24=643/5, var_1_25=3/5, var_1_26=795/8, var_1_27=1, var_1_29=128, var_1_5=190, var_1_6=63, var_1_7=0, var_1_8=-256, var_1_9=1] [L155] var_1_11 = __VERIFIER_nondet_uchar() [L156] CALL assume_abort_if_not(var_1_11 >= 0) VAL [\old(cond)=1, isInitial=1, last_1_var_1_12=1, last_1_var_1_13=200, last_1_var_1_15=0, last_1_var_1_18=-25, last_1_var_1_19=-10, last_1_var_1_20=2, last_1_var_1_27=1, last_1_var_1_9=1, var_1_10=1, var_1_12=1, var_1_13=200, var_1_14=16, var_1_15=0, var_1_17=1, var_1_18=-25, var_1_19=-10, var_1_1=4, var_1_20=2, var_1_22=32, var_1_23=4, var_1_24=643/5, var_1_25=3/5, var_1_26=795/8, var_1_27=1, var_1_29=128, var_1_5=190, var_1_6=63, var_1_7=0, var_1_8=-256, var_1_9=1] [L20] COND FALSE !(!cond) [L156] RET assume_abort_if_not(var_1_11 >= 0) VAL [isInitial=1, last_1_var_1_12=1, last_1_var_1_13=200, last_1_var_1_15=0, last_1_var_1_18=-25, last_1_var_1_19=-10, last_1_var_1_20=2, last_1_var_1_27=1, last_1_var_1_9=1, var_1_10=1, var_1_12=1, var_1_13=200, var_1_14=16, var_1_15=0, var_1_17=1, var_1_18=-25, var_1_19=-10, var_1_1=4, var_1_20=2, var_1_22=32, var_1_23=4, var_1_24=643/5, var_1_25=3/5, var_1_26=795/8, var_1_27=1, var_1_29=128, var_1_5=190, var_1_6=63, var_1_7=0, var_1_8=-256, var_1_9=1] [L157] CALL assume_abort_if_not(var_1_11 <= 0) VAL [\old(cond)=1, isInitial=1, last_1_var_1_12=1, last_1_var_1_13=200, last_1_var_1_15=0, last_1_var_1_18=-25, last_1_var_1_19=-10, last_1_var_1_20=2, last_1_var_1_27=1, last_1_var_1_9=1, var_1_10=1, var_1_11=0, var_1_12=1, var_1_13=200, var_1_14=16, var_1_15=0, var_1_17=1, var_1_18=-25, var_1_19=-10, var_1_1=4, var_1_20=2, var_1_22=32, var_1_23=4, var_1_24=643/5, var_1_25=3/5, var_1_26=795/8, var_1_27=1, var_1_29=128, var_1_5=190, var_1_6=63, var_1_7=0, var_1_8=-256, var_1_9=1] [L20] COND FALSE !(!cond) [L157] RET assume_abort_if_not(var_1_11 <= 0) VAL [isInitial=1, last_1_var_1_12=1, last_1_var_1_13=200, last_1_var_1_15=0, last_1_var_1_18=-25, last_1_var_1_19=-10, last_1_var_1_20=2, last_1_var_1_27=1, last_1_var_1_9=1, var_1_10=1, var_1_11=0, var_1_12=1, var_1_13=200, var_1_14=16, var_1_15=0, var_1_17=1, var_1_18=-25, var_1_19=-10, var_1_1=4, var_1_20=2, var_1_22=32, var_1_23=4, var_1_24=643/5, var_1_25=3/5, var_1_26=795/8, var_1_27=1, var_1_29=128, var_1_5=190, var_1_6=63, var_1_7=0, var_1_8=-256, var_1_9=1] [L158] var_1_14 = __VERIFIER_nondet_char() [L159] CALL assume_abort_if_not(var_1_14 >= 0) VAL [\old(cond)=1, isInitial=1, last_1_var_1_12=1, last_1_var_1_13=200, last_1_var_1_15=0, last_1_var_1_18=-25, last_1_var_1_19=-10, last_1_var_1_20=2, last_1_var_1_27=1, last_1_var_1_9=1, var_1_10=1, var_1_11=0, var_1_12=1, var_1_13=200, var_1_14=60, var_1_15=0, var_1_17=1, var_1_18=-25, var_1_19=-10, var_1_1=4, var_1_20=2, var_1_22=32, var_1_23=4, var_1_24=643/5, var_1_25=3/5, var_1_26=795/8, var_1_27=1, var_1_29=128, var_1_5=190, var_1_6=63, var_1_7=0, var_1_8=-256, var_1_9=1] [L20] COND FALSE !(!cond) [L159] RET assume_abort_if_not(var_1_14 >= 0) VAL [isInitial=1, last_1_var_1_12=1, last_1_var_1_13=200, last_1_var_1_15=0, last_1_var_1_18=-25, last_1_var_1_19=-10, last_1_var_1_20=2, last_1_var_1_27=1, last_1_var_1_9=1, var_1_10=1, var_1_11=0, var_1_12=1, var_1_13=200, var_1_14=60, var_1_15=0, var_1_17=1, var_1_18=-25, var_1_19=-10, var_1_1=4, var_1_20=2, var_1_22=32, var_1_23=4, var_1_24=643/5, var_1_25=3/5, var_1_26=795/8, var_1_27=1, var_1_29=128, var_1_5=190, var_1_6=63, var_1_7=0, var_1_8=-256, var_1_9=1] [L160] CALL assume_abort_if_not(var_1_14 <= 63) VAL [\old(cond)=1, isInitial=1, last_1_var_1_12=1, last_1_var_1_13=200, last_1_var_1_15=0, last_1_var_1_18=-25, last_1_var_1_19=-10, last_1_var_1_20=2, last_1_var_1_27=1, last_1_var_1_9=1, var_1_10=1, var_1_11=0, var_1_12=1, var_1_13=200, var_1_14=60, var_1_15=0, var_1_17=1, var_1_18=-25, var_1_19=-10, var_1_1=4, var_1_20=2, var_1_22=32, var_1_23=4, var_1_24=643/5, var_1_25=3/5, var_1_26=795/8, var_1_27=1, var_1_29=128, var_1_5=190, var_1_6=63, var_1_7=0, var_1_8=-256, var_1_9=1] [L20] COND FALSE !(!cond) [L160] RET assume_abort_if_not(var_1_14 <= 63) VAL [isInitial=1, last_1_var_1_12=1, last_1_var_1_13=200, last_1_var_1_15=0, last_1_var_1_18=-25, last_1_var_1_19=-10, last_1_var_1_20=2, last_1_var_1_27=1, last_1_var_1_9=1, var_1_10=1, var_1_11=0, var_1_12=1, var_1_13=200, var_1_14=60, var_1_15=0, var_1_17=1, var_1_18=-25, var_1_19=-10, var_1_1=4, var_1_20=2, var_1_22=32, var_1_23=4, var_1_24=643/5, var_1_25=3/5, var_1_26=795/8, var_1_27=1, var_1_29=128, var_1_5=190, var_1_6=63, var_1_7=0, var_1_8=-256, var_1_9=1] [L161] var_1_17 = __VERIFIER_nondet_uchar() [L162] CALL assume_abort_if_not(var_1_17 >= 1) VAL [\old(cond)=1, isInitial=1, last_1_var_1_12=1, last_1_var_1_13=200, last_1_var_1_15=0, last_1_var_1_18=-25, last_1_var_1_19=-10, last_1_var_1_20=2, last_1_var_1_27=1, last_1_var_1_9=1, var_1_10=1, var_1_11=0, var_1_12=1, var_1_13=200, var_1_14=60, var_1_15=0, var_1_17=1, var_1_18=-25, var_1_19=-10, var_1_1=4, var_1_20=2, var_1_22=32, var_1_23=4, var_1_24=643/5, var_1_25=3/5, var_1_26=795/8, var_1_27=1, var_1_29=128, var_1_5=190, var_1_6=63, var_1_7=0, var_1_8=-256, var_1_9=1] [L20] COND FALSE !(!cond) [L162] RET assume_abort_if_not(var_1_17 >= 1) VAL [isInitial=1, last_1_var_1_12=1, last_1_var_1_13=200, last_1_var_1_15=0, last_1_var_1_18=-25, last_1_var_1_19=-10, last_1_var_1_20=2, last_1_var_1_27=1, last_1_var_1_9=1, var_1_10=1, var_1_11=0, var_1_12=1, var_1_13=200, var_1_14=60, var_1_15=0, var_1_17=1, var_1_18=-25, var_1_19=-10, var_1_1=4, var_1_20=2, var_1_22=32, var_1_23=4, var_1_24=643/5, var_1_25=3/5, var_1_26=795/8, var_1_27=1, var_1_29=128, var_1_5=190, var_1_6=63, var_1_7=0, var_1_8=-256, var_1_9=1] [L163] CALL assume_abort_if_not(var_1_17 <= 1) VAL [\old(cond)=1, isInitial=1, last_1_var_1_12=1, last_1_var_1_13=200, last_1_var_1_15=0, last_1_var_1_18=-25, last_1_var_1_19=-10, last_1_var_1_20=2, last_1_var_1_27=1, last_1_var_1_9=1, var_1_10=1, var_1_11=0, var_1_12=1, var_1_13=200, var_1_14=60, var_1_15=0, var_1_17=1, var_1_18=-25, var_1_19=-10, var_1_1=4, var_1_20=2, var_1_22=32, var_1_23=4, var_1_24=643/5, var_1_25=3/5, var_1_26=795/8, var_1_27=1, var_1_29=128, var_1_5=190, var_1_6=63, var_1_7=0, var_1_8=-256, var_1_9=1] [L20] COND FALSE !(!cond) [L163] RET assume_abort_if_not(var_1_17 <= 1) VAL [isInitial=1, last_1_var_1_12=1, last_1_var_1_13=200, last_1_var_1_15=0, last_1_var_1_18=-25, last_1_var_1_19=-10, last_1_var_1_20=2, last_1_var_1_27=1, last_1_var_1_9=1, var_1_10=1, var_1_11=0, var_1_12=1, var_1_13=200, var_1_14=60, var_1_15=0, var_1_17=1, var_1_18=-25, var_1_19=-10, var_1_1=4, var_1_20=2, var_1_22=32, var_1_23=4, var_1_24=643/5, var_1_25=3/5, var_1_26=795/8, var_1_27=1, var_1_29=128, var_1_5=190, var_1_6=63, var_1_7=0, var_1_8=-256, var_1_9=1] [L164] var_1_22 = __VERIFIER_nondet_uchar() [L165] CALL assume_abort_if_not(var_1_22 >= 32) VAL [\old(cond)=1, isInitial=1, last_1_var_1_12=1, last_1_var_1_13=200, last_1_var_1_15=0, last_1_var_1_18=-25, last_1_var_1_19=-10, last_1_var_1_20=2, last_1_var_1_27=1, last_1_var_1_9=1, var_1_10=1, var_1_11=0, var_1_12=1, var_1_13=200, var_1_14=60, var_1_15=0, var_1_17=1, var_1_18=-25, var_1_19=-10, var_1_1=4, var_1_20=2, var_1_22=61, var_1_23=4, var_1_24=643/5, var_1_25=3/5, var_1_26=795/8, var_1_27=1, var_1_29=128, var_1_5=190, var_1_6=63, var_1_7=0, var_1_8=-256, var_1_9=1] [L20] COND FALSE !(!cond) [L165] RET assume_abort_if_not(var_1_22 >= 32) VAL [isInitial=1, last_1_var_1_12=1, last_1_var_1_13=200, last_1_var_1_15=0, last_1_var_1_18=-25, last_1_var_1_19=-10, last_1_var_1_20=2, last_1_var_1_27=1, last_1_var_1_9=1, var_1_10=1, var_1_11=0, var_1_12=1, var_1_13=200, var_1_14=60, var_1_15=0, var_1_17=1, var_1_18=-25, var_1_19=-10, var_1_1=4, var_1_20=2, var_1_22=61, var_1_23=4, var_1_24=643/5, var_1_25=3/5, var_1_26=795/8, var_1_27=1, var_1_29=128, var_1_5=190, var_1_6=63, var_1_7=0, var_1_8=-256, var_1_9=1] [L166] CALL assume_abort_if_not(var_1_22 <= 64) VAL [\old(cond)=1, isInitial=1, last_1_var_1_12=1, last_1_var_1_13=200, last_1_var_1_15=0, last_1_var_1_18=-25, last_1_var_1_19=-10, last_1_var_1_20=2, last_1_var_1_27=1, last_1_var_1_9=1, var_1_10=1, var_1_11=0, var_1_12=1, var_1_13=200, var_1_14=60, var_1_15=0, var_1_17=1, var_1_18=-25, var_1_19=-10, var_1_1=4, var_1_20=2, var_1_22=61, var_1_23=4, var_1_24=643/5, var_1_25=3/5, var_1_26=795/8, var_1_27=1, var_1_29=128, var_1_5=190, var_1_6=63, var_1_7=0, var_1_8=-256, var_1_9=1] [L20] COND FALSE !(!cond) [L166] RET assume_abort_if_not(var_1_22 <= 64) VAL [isInitial=1, last_1_var_1_12=1, last_1_var_1_13=200, last_1_var_1_15=0, last_1_var_1_18=-25, last_1_var_1_19=-10, last_1_var_1_20=2, last_1_var_1_27=1, last_1_var_1_9=1, var_1_10=1, var_1_11=0, var_1_12=1, var_1_13=200, var_1_14=60, var_1_15=0, var_1_17=1, var_1_18=-25, var_1_19=-10, var_1_1=4, var_1_20=2, var_1_22=61, var_1_23=4, var_1_24=643/5, var_1_25=3/5, var_1_26=795/8, var_1_27=1, var_1_29=128, var_1_5=190, var_1_6=63, var_1_7=0, var_1_8=-256, var_1_9=1] [L167] var_1_23 = __VERIFIER_nondet_uchar() [L168] CALL assume_abort_if_not(var_1_23 >= 0) VAL [\old(cond)=1, isInitial=1, last_1_var_1_12=1, last_1_var_1_13=200, last_1_var_1_15=0, last_1_var_1_18=-25, last_1_var_1_19=-10, last_1_var_1_20=2, last_1_var_1_27=1, last_1_var_1_9=1, var_1_10=1, var_1_11=0, var_1_12=1, var_1_13=200, var_1_14=60, var_1_15=0, var_1_17=1, var_1_18=-25, var_1_19=-10, var_1_1=4, var_1_20=2, var_1_22=61, var_1_24=643/5, var_1_25=3/5, var_1_26=795/8, var_1_27=1, var_1_29=128, var_1_5=190, var_1_6=63, var_1_7=0, var_1_8=-256, var_1_9=1] [L20] COND FALSE !(!cond) [L168] RET assume_abort_if_not(var_1_23 >= 0) VAL [isInitial=1, last_1_var_1_12=1, last_1_var_1_13=200, last_1_var_1_15=0, last_1_var_1_18=-25, last_1_var_1_19=-10, last_1_var_1_20=2, last_1_var_1_27=1, last_1_var_1_9=1, var_1_10=1, var_1_11=0, var_1_12=1, var_1_13=200, var_1_14=60, var_1_15=0, var_1_17=1, var_1_18=-25, var_1_19=-10, var_1_1=4, var_1_20=2, var_1_22=61, var_1_24=643/5, var_1_25=3/5, var_1_26=795/8, var_1_27=1, var_1_29=128, var_1_5=190, var_1_6=63, var_1_7=0, var_1_8=-256, var_1_9=1] [L169] CALL assume_abort_if_not(var_1_23 <= 32) VAL [\old(cond)=1, isInitial=1, last_1_var_1_12=1, last_1_var_1_13=200, last_1_var_1_15=0, last_1_var_1_18=-25, last_1_var_1_19=-10, last_1_var_1_20=2, last_1_var_1_27=1, last_1_var_1_9=1, var_1_10=1, var_1_11=0, var_1_12=1, var_1_13=200, var_1_14=60, var_1_15=0, var_1_17=1, var_1_18=-25, var_1_19=-10, var_1_1=4, var_1_20=2, var_1_22=61, var_1_23=0, var_1_24=643/5, var_1_25=3/5, var_1_26=795/8, var_1_27=1, var_1_29=128, var_1_5=190, var_1_6=63, var_1_7=0, var_1_8=-256, var_1_9=1] [L20] COND FALSE !(!cond) [L169] RET assume_abort_if_not(var_1_23 <= 32) VAL [isInitial=1, last_1_var_1_12=1, last_1_var_1_13=200, last_1_var_1_15=0, last_1_var_1_18=-25, last_1_var_1_19=-10, last_1_var_1_20=2, last_1_var_1_27=1, last_1_var_1_9=1, var_1_10=1, var_1_11=0, var_1_12=1, var_1_13=200, var_1_14=60, var_1_15=0, var_1_17=1, var_1_18=-25, var_1_19=-10, var_1_1=4, var_1_20=2, var_1_22=61, var_1_23=0, var_1_24=643/5, var_1_25=3/5, var_1_26=795/8, var_1_27=1, var_1_29=128, var_1_5=190, var_1_6=63, var_1_7=0, var_1_8=-256, var_1_9=1] [L170] var_1_25 = __VERIFIER_nondet_double() [L171] CALL assume_abort_if_not((var_1_25 >= -461168.6018427382800e+13F && var_1_25 <= -1.0e-20F) || (var_1_25 <= 4611686.018427382800e+12F && var_1_25 >= 1.0e-20F )) VAL [\old(cond)=1, isInitial=1, last_1_var_1_12=1, last_1_var_1_13=200, last_1_var_1_15=0, last_1_var_1_18=-25, last_1_var_1_19=-10, last_1_var_1_20=2, last_1_var_1_27=1, last_1_var_1_9=1, var_1_10=1, var_1_11=0, var_1_12=1, var_1_13=200, var_1_14=60, var_1_15=0, var_1_17=1, var_1_18=-25, var_1_19=-10, var_1_1=4, var_1_20=2, var_1_22=61, var_1_23=0, var_1_24=643/5, var_1_26=795/8, var_1_27=1, var_1_29=128, var_1_5=190, var_1_6=63, var_1_7=0, var_1_8=-256, var_1_9=1] [L20] COND FALSE !(!cond) [L171] RET assume_abort_if_not((var_1_25 >= -461168.6018427382800e+13F && var_1_25 <= -1.0e-20F) || (var_1_25 <= 4611686.018427382800e+12F && var_1_25 >= 1.0e-20F )) VAL [isInitial=1, last_1_var_1_12=1, last_1_var_1_13=200, last_1_var_1_15=0, last_1_var_1_18=-25, last_1_var_1_19=-10, last_1_var_1_20=2, last_1_var_1_27=1, last_1_var_1_9=1, var_1_10=1, var_1_11=0, var_1_12=1, var_1_13=200, var_1_14=60, var_1_15=0, var_1_17=1, var_1_18=-25, var_1_19=-10, var_1_1=4, var_1_20=2, var_1_22=61, var_1_23=0, var_1_24=643/5, var_1_26=795/8, var_1_27=1, var_1_29=128, var_1_5=190, var_1_6=63, var_1_7=0, var_1_8=-256, var_1_9=1] [L172] var_1_26 = __VERIFIER_nondet_double() [L173] CALL assume_abort_if_not((var_1_26 >= -461168.6018427382800e+13F && var_1_26 <= -1.0e-20F) || (var_1_26 <= 4611686.018427382800e+12F && var_1_26 >= 1.0e-20F )) VAL [\old(cond)=1, isInitial=1, last_1_var_1_12=1, last_1_var_1_13=200, last_1_var_1_15=0, last_1_var_1_18=-25, last_1_var_1_19=-10, last_1_var_1_20=2, last_1_var_1_27=1, last_1_var_1_9=1, var_1_10=1, var_1_11=0, var_1_12=1, var_1_13=200, var_1_14=60, var_1_15=0, var_1_17=1, var_1_18=-25, var_1_19=-10, var_1_1=4, var_1_20=2, var_1_22=61, var_1_23=0, var_1_24=643/5, var_1_27=1, var_1_29=128, var_1_5=190, var_1_6=63, var_1_7=0, var_1_8=-256, var_1_9=1] [L20] COND FALSE !(!cond) [L173] RET assume_abort_if_not((var_1_26 >= -461168.6018427382800e+13F && var_1_26 <= -1.0e-20F) || (var_1_26 <= 4611686.018427382800e+12F && var_1_26 >= 1.0e-20F )) VAL [isInitial=1, last_1_var_1_12=1, last_1_var_1_13=200, last_1_var_1_15=0, last_1_var_1_18=-25, last_1_var_1_19=-10, last_1_var_1_20=2, last_1_var_1_27=1, last_1_var_1_9=1, var_1_10=1, var_1_11=0, var_1_12=1, var_1_13=200, var_1_14=60, var_1_15=0, var_1_17=1, var_1_18=-25, var_1_19=-10, var_1_1=4, var_1_20=2, var_1_22=61, var_1_23=0, var_1_24=643/5, var_1_27=1, var_1_29=128, var_1_5=190, var_1_6=63, var_1_7=0, var_1_8=-256, var_1_9=1] [L194] RET updateVariables() [L195] CALL step() [L56] var_1_10 || (var_1_5 < (last_1_var_1_27 & last_1_var_1_27)) [L56] COND TRUE var_1_10 || (var_1_5 < (last_1_var_1_27 & last_1_var_1_27)) [L57] COND FALSE !(last_1_var_1_18 >= (last_1_var_1_27 + (var_1_14 / var_1_5))) [L60] COND TRUE (~ last_1_var_1_27) > (var_1_7 - ((((var_1_6) < 0 ) ? -(var_1_6) : (var_1_6)))) [L61] var_1_15 = (! (! (last_1_var_1_9 && var_1_11))) [L73] COND FALSE !(((last_1_var_1_19 / -2) <= last_1_var_1_13) && last_1_var_1_15) [L76] var_1_1 = (var_1_6 + var_1_7) [L78] unsigned char stepLocal_4 = last_1_var_1_13 < var_1_5; [L79] COND TRUE (last_1_var_1_12 > -4) || stepLocal_4 [L80] var_1_19 = last_1_var_1_20 [L82] COND FALSE !(\read(var_1_15)) [L85] var_1_8 = (25 + var_1_6) [L87] COND FALSE !(\read(var_1_11)) [L90] COND FALSE !(\read(var_1_11)) [L97] COND TRUE var_1_1 <= var_1_5 [L98] var_1_20 = var_1_6 [L101] signed char stepLocal_5 = var_1_14; [L102] COND TRUE var_1_22 > stepLocal_5 [L103] var_1_27 = var_1_19 [L107] signed short int stepLocal_1 = var_1_27; [L108] COND TRUE \read(var_1_10) [L109] var_1_13 = var_1_7 [L117] unsigned char stepLocal_3 = var_1_1; [L118] signed long int stepLocal_2 = var_1_5 ^ 1; [L119] COND TRUE stepLocal_2 >= (~ -8) [L120] var_1_18 = var_1_6 [L126] signed long int stepLocal_6 = (var_1_18 / var_1_22) / var_1_5; [L127] COND TRUE var_1_13 <= stepLocal_6 [L128] var_1_29 = var_1_19 [L130] unsigned char stepLocal_0 = var_1_15; [L131] COND FALSE !((var_1_18 < var_1_1) && stepLocal_0) [L134] var_1_9 = (! var_1_11) [L136] COND TRUE var_1_7 <= var_1_22 [L137] COND TRUE \read(var_1_9) [L138] var_1_24 = (var_1_25 + var_1_26) [L195] RET step() [L196] CALL, EXPR property() [L186] EXPR ((((((((last_1_var_1_19 / -2) <= last_1_var_1_13) && last_1_var_1_15) ? (var_1_1 == ((unsigned char) ((var_1_5 - var_1_6) - var_1_7))) : (var_1_1 == ((unsigned char) (var_1_6 + var_1_7)))) && (var_1_15 ? (var_1_8 == ((signed long int) ((((var_1_6) > (var_1_7)) ? (var_1_6) : (var_1_7))))) : (var_1_8 == ((signed long int) (25 + var_1_6))))) && (((var_1_18 < var_1_1) && var_1_15) ? (var_1_9 == ((unsigned char) ((var_1_18 > var_1_1) || var_1_10))) : (var_1_9 == ((unsigned char) (! var_1_11))))) && (var_1_11 ? (var_1_12 == ((unsigned char) var_1_6)) : 1)) && (var_1_10 ? (var_1_13 == ((unsigned char) var_1_7)) : ((((var_1_6 + var_1_14) - var_1_7) >= var_1_27) ? (var_1_13 == ((unsigned char) var_1_14)) : (var_1_13 == ((unsigned char) var_1_14))))) && ((var_1_10 || (var_1_5 < (last_1_var_1_27 & last_1_var_1_27))) ? ((last_1_var_1_18 >= (last_1_var_1_27 + (var_1_14 / var_1_5))) ? (var_1_15 == ((unsigned char) (! var_1_11))) : (((~ last_1_var_1_27) > (var_1_7 - ((((var_1_6) < 0 ) ? -(var_1_6) : (var_1_6))))) ? (var_1_15 == ((unsigned char) (! (! (last_1_var_1_9 && var_1_11))))) : (var_1_15 == ((unsigned char) (! var_1_11))))) : (var_1_11 ? (var_1_15 == ((unsigned char) var_1_17)) : (var_1_15 == ((unsigned char) var_1_17)))) [L186] EXPR var_1_10 || (var_1_5 < (last_1_var_1_27 & last_1_var_1_27)) [L186] EXPR ((((((((last_1_var_1_19 / -2) <= last_1_var_1_13) && last_1_var_1_15) ? (var_1_1 == ((unsigned char) ((var_1_5 - var_1_6) - var_1_7))) : (var_1_1 == ((unsigned char) (var_1_6 + var_1_7)))) && (var_1_15 ? (var_1_8 == ((signed long int) ((((var_1_6) > (var_1_7)) ? (var_1_6) : (var_1_7))))) : (var_1_8 == ((signed long int) (25 + var_1_6))))) && (((var_1_18 < var_1_1) && var_1_15) ? (var_1_9 == ((unsigned char) ((var_1_18 > var_1_1) || var_1_10))) : (var_1_9 == ((unsigned char) (! var_1_11))))) && (var_1_11 ? (var_1_12 == ((unsigned char) var_1_6)) : 1)) && (var_1_10 ? (var_1_13 == ((unsigned char) var_1_7)) : ((((var_1_6 + var_1_14) - var_1_7) >= var_1_27) ? (var_1_13 == ((unsigned char) var_1_14)) : (var_1_13 == ((unsigned char) var_1_14))))) && ((var_1_10 || (var_1_5 < (last_1_var_1_27 & last_1_var_1_27))) ? ((last_1_var_1_18 >= (last_1_var_1_27 + (var_1_14 / var_1_5))) ? (var_1_15 == ((unsigned char) (! var_1_11))) : (((~ last_1_var_1_27) > (var_1_7 - ((((var_1_6) < 0 ) ? -(var_1_6) : (var_1_6))))) ? (var_1_15 == ((unsigned char) (! (! (last_1_var_1_9 && var_1_11))))) : (var_1_15 == ((unsigned char) (! var_1_11))))) : (var_1_11 ? (var_1_15 == ((unsigned char) var_1_17)) : (var_1_15 == ((unsigned char) var_1_17)))) [L186-L187] return ((((((((((((((last_1_var_1_19 / -2) <= last_1_var_1_13) && last_1_var_1_15) ? (var_1_1 == ((unsigned char) ((var_1_5 - var_1_6) - var_1_7))) : (var_1_1 == ((unsigned char) (var_1_6 + var_1_7)))) && (var_1_15 ? (var_1_8 == ((signed long int) ((((var_1_6) > (var_1_7)) ? (var_1_6) : (var_1_7))))) : (var_1_8 == ((signed long int) (25 + var_1_6))))) && (((var_1_18 < var_1_1) && var_1_15) ? (var_1_9 == ((unsigned char) ((var_1_18 > var_1_1) || var_1_10))) : (var_1_9 == ((unsigned char) (! var_1_11))))) && (var_1_11 ? (var_1_12 == ((unsigned char) var_1_6)) : 1)) && (var_1_10 ? (var_1_13 == ((unsigned char) var_1_7)) : ((((var_1_6 + var_1_14) - var_1_7) >= var_1_27) ? (var_1_13 == ((unsigned char) var_1_14)) : (var_1_13 == ((unsigned char) var_1_14))))) && ((var_1_10 || (var_1_5 < (last_1_var_1_27 & last_1_var_1_27))) ? ((last_1_var_1_18 >= (last_1_var_1_27 + (var_1_14 / var_1_5))) ? (var_1_15 == ((unsigned char) (! var_1_11))) : (((~ last_1_var_1_27) > (var_1_7 - ((((var_1_6) < 0 ) ? -(var_1_6) : (var_1_6))))) ? (var_1_15 == ((unsigned char) (! (! (last_1_var_1_9 && var_1_11))))) : (var_1_15 == ((unsigned char) (! var_1_11))))) : (var_1_11 ? (var_1_15 == ((unsigned char) var_1_17)) : (var_1_15 == ((unsigned char) var_1_17))))) && (((var_1_5 ^ 1) >= (~ -8)) ? (var_1_18 == ((signed char) var_1_6)) : ((var_1_1 == var_1_20) ? (var_1_18 == ((signed char) var_1_14)) : 1))) && (((last_1_var_1_12 > -4) || (last_1_var_1_13 < var_1_5)) ? (var_1_19 == ((signed short int) last_1_var_1_20)) : 1)) && (var_1_11 ? (((var_1_19 >= var_1_19) || (var_1_19 >= ((((var_1_5) > (var_1_1)) ? (var_1_5) : (var_1_1))))) ? (var_1_20 == ((unsigned char) (var_1_7 + var_1_6))) : (var_1_20 == ((unsigned char) (var_1_6 + ((var_1_22 - var_1_23) + var_1_14))))) : ((var_1_1 <= var_1_5) ? (var_1_20 == ((unsigned char) var_1_6)) : 1))) && ((var_1_7 <= var_1_22) ? (var_1_9 ? (var_1_24 == ((double) (var_1_25 + var_1_26))) : 1) : 1)) && ((var_1_22 > var_1_14) ? (var_1_27 == ((signed short int) var_1_19)) : (var_1_27 == ((signed short int) (((((var_1_5) > ((var_1_6 + var_1_12))) ? (var_1_5) : ((var_1_6 + var_1_12)))) - var_1_14))))) && ((var_1_13 <= ((var_1_18 / var_1_22) / var_1_5)) ? (var_1_29 == ((unsigned long int) var_1_19)) : 1) ; [L196] RET, EXPR property() [L196] CALL __VERIFIER_assert(property()) [L19] COND TRUE !(cond) VAL [\old(cond)=0, cond=0, isInitial=1, last_1_var_1_12=1, last_1_var_1_13=200, last_1_var_1_15=0, last_1_var_1_18=-25, last_1_var_1_19=-10, last_1_var_1_20=2, last_1_var_1_27=1, last_1_var_1_9=1, var_1_10=1, var_1_11=0, var_1_12=1, var_1_13=0, var_1_14=60, var_1_15=0, var_1_17=1, var_1_18=63, var_1_19=2, var_1_1=63, var_1_20=63, var_1_22=61, var_1_23=0, var_1_24=0, var_1_27=2, var_1_29=2, var_1_5=190, var_1_6=63, var_1_7=0, var_1_8=88, var_1_9=1] [L19] reach_error() VAL [\old(cond)=0, cond=0, isInitial=1, last_1_var_1_12=1, last_1_var_1_13=200, last_1_var_1_15=0, last_1_var_1_18=-25, last_1_var_1_19=-10, last_1_var_1_20=2, last_1_var_1_27=1, last_1_var_1_9=1, var_1_10=1, var_1_11=0, var_1_12=1, var_1_13=0, var_1_14=60, var_1_15=0, var_1_17=1, var_1_18=63, var_1_19=2, var_1_1=63, var_1_20=63, var_1_22=61, var_1_23=0, var_1_24=0, var_1_27=2, var_1_29=2, var_1_5=190, var_1_6=63, var_1_7=0, var_1_8=88, var_1_9=1] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 40 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.1s, OverallIterations: 1, TraceHistogramMax: 20, 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=40occurred 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: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 75 NumberOfCodeBlocks, 75 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 [2023-11-23 21:28:53,353 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_390ccde6-b500-4d40-a2d2-b107d2381385/bin/utaipan-verify-mE87zJ7Ire/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_390ccde6-b500-4d40-a2d2-b107d2381385/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_390ccde6-b500-4d40-a2d2-b107d2381385/bin/utaipan-verify-mE87zJ7Ire/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_390ccde6-b500-4d40-a2d2-b107d2381385/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_390ccde6-b500-4d40-a2d2-b107d2381385/bin/utaipan-verify-mE87zJ7Ire/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-while_file-63.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_390ccde6-b500-4d40-a2d2-b107d2381385/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_390ccde6-b500-4d40-a2d2-b107d2381385/bin/utaipan-verify-mE87zJ7Ire --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 e08b130d986262ceb0772f034a60f5b23796cc6f800ada70e6af5834a62fdc07 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 21:28:56,408 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 21:28:56,557 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_390ccde6-b500-4d40-a2d2-b107d2381385/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2023-11-23 21:28:56,567 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 21:28:56,568 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 21:28:56,621 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 21:28:56,622 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 21:28:56,623 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 21:28:56,624 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 21:28:56,626 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 21:28:56,627 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-23 21:28:56,627 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-23 21:28:56,628 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-23 21:28:56,629 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-23 21:28:56,629 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-23 21:28:56,630 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-23 21:28:56,631 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 21:28:56,632 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 21:28:56,632 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-23 21:28:56,634 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-23 21:28:56,634 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 21:28:56,635 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 21:28:56,636 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 21:28:56,636 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 21:28:56,637 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-23 21:28:56,638 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-23 21:28:56,638 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-23 21:28:56,639 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-23 21:28:56,639 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 21:28:56,640 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 21:28:56,641 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 21:28:56,642 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-23 21:28:56,642 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 21:28:56,643 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 21:28:56,643 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:28:56,644 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 21:28:56,644 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 21:28:56,644 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 21:28:56,645 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-11-23 21:28:56,646 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-23 21:28:56,646 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 21:28:56,647 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 21:28:56,647 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-23 21:28:56,647 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 21:28:56,648 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_390ccde6-b500-4d40-a2d2-b107d2381385/bin/utaipan-verify-mE87zJ7Ire/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_390ccde6-b500-4d40-a2d2-b107d2381385/bin/utaipan-verify-mE87zJ7Ire Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e08b130d986262ceb0772f034a60f5b23796cc6f800ada70e6af5834a62fdc07 [2023-11-23 21:28:57,118 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 21:28:57,152 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 21:28:57,155 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 21:28:57,156 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 21:28:57,157 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 21:28:57,158 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_390ccde6-b500-4d40-a2d2-b107d2381385/bin/utaipan-verify-mE87zJ7Ire/../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-while_file-63.i [2023-11-23 21:29:00,491 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 21:29:00,775 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 21:29:00,776 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_390ccde6-b500-4d40-a2d2-b107d2381385/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-while_file-63.i [2023-11-23 21:29:00,791 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_390ccde6-b500-4d40-a2d2-b107d2381385/bin/utaipan-verify-mE87zJ7Ire/data/38bd3e1c3/2164143a47de420f9920c29453f4672c/FLAGc649f6b00 [2023-11-23 21:29:00,810 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_390ccde6-b500-4d40-a2d2-b107d2381385/bin/utaipan-verify-mE87zJ7Ire/data/38bd3e1c3/2164143a47de420f9920c29453f4672c [2023-11-23 21:29:00,813 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 21:29:00,815 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 21:29:00,816 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 21:29:00,817 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 21:29:00,822 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 21:29:00,823 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:29:00" (1/1) ... [2023-11-23 21:29:00,824 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e95a214 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:29:00, skipping insertion in model container [2023-11-23 21:29:00,824 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:29:00" (1/1) ... [2023-11-23 21:29:00,860 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 21:29:01,016 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_390ccde6-b500-4d40-a2d2-b107d2381385/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-while_file-63.i[916,929] [2023-11-23 21:29:01,123 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:29:01,142 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 21:29:01,167 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_390ccde6-b500-4d40-a2d2-b107d2381385/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-while_file-63.i[916,929] [2023-11-23 21:29:01,213 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:29:01,234 INFO L206 MainTranslator]: Completed translation [2023-11-23 21:29:01,235 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:29:01 WrapperNode [2023-11-23 21:29:01,235 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 21:29:01,236 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 21:29:01,237 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 21:29:01,237 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 21:29:01,244 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:29:01" (1/1) ... [2023-11-23 21:29:01,267 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:29:01" (1/1) ... [2023-11-23 21:29:01,320 INFO L138 Inliner]: procedures = 27, calls = 33, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 178 [2023-11-23 21:29:01,321 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 21:29:01,321 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 21:29:01,322 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 21:29:01,322 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 21:29:01,333 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:29:01" (1/1) ... [2023-11-23 21:29:01,333 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:29:01" (1/1) ... [2023-11-23 21:29:01,349 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:29:01" (1/1) ... [2023-11-23 21:29:01,352 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:29:01" (1/1) ... [2023-11-23 21:29:01,370 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:29:01" (1/1) ... [2023-11-23 21:29:01,387 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:29:01" (1/1) ... [2023-11-23 21:29:01,397 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:29:01" (1/1) ... [2023-11-23 21:29:01,399 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:29:01" (1/1) ... [2023-11-23 21:29:01,404 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 21:29:01,418 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 21:29:01,418 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 21:29:01,419 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 21:29:01,420 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:29:01" (1/1) ... [2023-11-23 21:29:01,425 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:29:01,461 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_390ccde6-b500-4d40-a2d2-b107d2381385/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:29:01,481 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_390ccde6-b500-4d40-a2d2-b107d2381385/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 21:29:01,551 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_390ccde6-b500-4d40-a2d2-b107d2381385/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 21:29:01,572 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 21:29:01,572 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-23 21:29:01,573 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-23 21:29:01,573 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-23 21:29:01,573 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 21:29:01,573 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 21:29:01,702 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 21:29:01,706 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 21:29:02,640 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 21:29:02,725 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 21:29:02,728 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-23 21:29:02,729 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:29:02 BoogieIcfgContainer [2023-11-23 21:29:02,730 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 21:29:02,733 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 21:29:02,738 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 21:29:02,742 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 21:29:02,745 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 09:29:00" (1/3) ... [2023-11-23 21:29:02,746 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2693e41 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:29:02, skipping insertion in model container [2023-11-23 21:29:02,747 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:29:01" (2/3) ... [2023-11-23 21:29:02,747 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2693e41 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:29:02, skipping insertion in model container [2023-11-23 21:29:02,747 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:29:02" (3/3) ... [2023-11-23 21:29:02,749 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_loopvsstraightlinecode_100-while_file-63.i [2023-11-23 21:29:02,770 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 21:29:02,771 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 21:29:02,824 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 21:29:02,831 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;@2d38cb02, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 21:29:02,832 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 21:29:02,839 INFO L276 IsEmpty]: Start isEmpty. Operand has 70 states, 47 states have (on average 1.5319148936170213) internal successors, (72), 48 states have internal predecessors, (72), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-11-23 21:29:02,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2023-11-23 21:29:02,857 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:29:02,858 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:29:02,859 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:29:02,864 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:29:02,864 INFO L85 PathProgramCache]: Analyzing trace with hash 1825796199, now seen corresponding path program 1 times [2023-11-23 21:29:02,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 21:29:02,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [924246313] [2023-11-23 21:29:02,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:29:02,881 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 [2023-11-23 21:29:02,881 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_390ccde6-b500-4d40-a2d2-b107d2381385/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 21:29:02,888 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_390ccde6-b500-4d40-a2d2-b107d2381385/bin/utaipan-verify-mE87zJ7Ire/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) [2023-11-23 21:29:02,892 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_390ccde6-b500-4d40-a2d2-b107d2381385/bin/utaipan-verify-mE87zJ7Ire/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 [2023-11-23 21:29:03,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:29:03,249 INFO L262 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-23 21:29:03,262 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:29:03,317 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 374 proven. 0 refuted. 0 times theorem prover too weak. 386 trivial. 0 not checked. [2023-11-23 21:29:03,317 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:29:03,318 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-23 21:29:03,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [924246313] [2023-11-23 21:29:03,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [924246313] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:29:03,320 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:29:03,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 21:29:03,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151731551] [2023-11-23 21:29:03,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:29:03,328 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-23 21:29:03,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-23 21:29:03,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-23 21:29:03,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-23 21:29:03,367 INFO L87 Difference]: Start difference. First operand has 70 states, 47 states have (on average 1.5319148936170213) internal successors, (72), 48 states have internal predecessors, (72), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) Second operand has 2 states, 2 states have (on average 21.5) internal successors, (43), 2 states have internal predecessors, (43), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2023-11-23 21:29:03,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:29:03,882 INFO L93 Difference]: Finished difference Result 137 states and 242 transitions. [2023-11-23 21:29:03,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-23 21:29:03,897 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 21.5) internal successors, (43), 2 states have internal predecessors, (43), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 136 [2023-11-23 21:29:03,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:29:03,906 INFO L225 Difference]: With dead ends: 137 [2023-11-23 21:29:03,906 INFO L226 Difference]: Without dead ends: 68 [2023-11-23 21:29:03,910 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-23 21:29:03,914 INFO L413 NwaCegarLoop]: 102 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-23 21:29:03,915 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 102 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-23 21:29:03,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2023-11-23 21:29:03,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2023-11-23 21:29:03,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 46 states have (on average 1.4130434782608696) internal successors, (65), 46 states have internal predecessors, (65), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-11-23 21:29:03,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 105 transitions. [2023-11-23 21:29:03,970 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 105 transitions. Word has length 136 [2023-11-23 21:29:03,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:29:03,970 INFO L495 AbstractCegarLoop]: Abstraction has 68 states and 105 transitions. [2023-11-23 21:29:03,971 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 21.5) internal successors, (43), 2 states have internal predecessors, (43), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2023-11-23 21:29:03,971 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 105 transitions. [2023-11-23 21:29:03,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2023-11-23 21:29:03,976 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:29:03,976 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:29:03,984 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_390ccde6-b500-4d40-a2d2-b107d2381385/bin/utaipan-verify-mE87zJ7Ire/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)] Ended with exit code 0 [2023-11-23 21:29:04,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_390ccde6-b500-4d40-a2d2-b107d2381385/bin/utaipan-verify-mE87zJ7Ire/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 [2023-11-23 21:29:04,184 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:29:04,185 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:29:04,185 INFO L85 PathProgramCache]: Analyzing trace with hash 1449142185, now seen corresponding path program 1 times [2023-11-23 21:29:04,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 21:29:04,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1076631195] [2023-11-23 21:29:04,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:29:04,187 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 [2023-11-23 21:29:04,187 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_390ccde6-b500-4d40-a2d2-b107d2381385/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 21:29:04,189 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_390ccde6-b500-4d40-a2d2-b107d2381385/bin/utaipan-verify-mE87zJ7Ire/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) [2023-11-23 21:29:04,196 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_390ccde6-b500-4d40-a2d2-b107d2381385/bin/utaipan-verify-mE87zJ7Ire/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 [2023-11-23 21:29:04,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:29:04,528 INFO L262 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-23 21:29:04,539 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:29:07,446 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 382 proven. 81 refuted. 0 times theorem prover too weak. 297 trivial. 0 not checked. [2023-11-23 21:29:07,447 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 21:29:08,776 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-23 21:29:08,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1076631195] [2023-11-23 21:29:08,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1076631195] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 21:29:08,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1510840344] [2023-11-23 21:29:08,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:29:08,778 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-23 21:29:08,778 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_390ccde6-b500-4d40-a2d2-b107d2381385/bin/utaipan-verify-mE87zJ7Ire/cvc4 [2023-11-23 21:29:08,824 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_390ccde6-b500-4d40-a2d2-b107d2381385/bin/utaipan-verify-mE87zJ7Ire/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-23 21:29:08,836 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_390ccde6-b500-4d40-a2d2-b107d2381385/bin/utaipan-verify-mE87zJ7Ire/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2023-11-23 21:29:09,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:29:09,274 INFO L262 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-23 21:29:09,282 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:29:09,985 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-11-23 21:29:09,986 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:29:09,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1510840344] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:29:09,986 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 21:29:09,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 11 [2023-11-23 21:29:09,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374608037] [2023-11-23 21:29:09,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:29:09,991 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 21:29:09,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-23 21:29:09,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 21:29:09,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2023-11-23 21:29:09,995 INFO L87 Difference]: Start difference. First operand 68 states and 105 transitions. Second operand has 4 states, 4 states have (on average 9.75) internal successors, (39), 3 states have internal predecessors, (39), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-11-23 21:29:11,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:29:11,197 INFO L93 Difference]: Finished difference Result 250 states and 385 transitions. [2023-11-23 21:29:11,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 21:29:11,211 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 3 states have internal predecessors, (39), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 136 [2023-11-23 21:29:11,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:29:11,216 INFO L225 Difference]: With dead ends: 250 [2023-11-23 21:29:11,216 INFO L226 Difference]: Without dead ends: 183 [2023-11-23 21:29:11,218 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 346 GetRequests, 333 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2023-11-23 21:29:11,220 INFO L413 NwaCegarLoop]: 134 mSDtfsCounter, 135 mSDsluCounter, 226 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 360 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-23 21:29:11,220 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 360 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-23 21:29:11,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2023-11-23 21:29:11,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 130. [2023-11-23 21:29:11,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 87 states have (on average 1.4137931034482758) internal successors, (123), 87 states have internal predecessors, (123), 40 states have call successors, (40), 2 states have call predecessors, (40), 2 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2023-11-23 21:29:11,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 203 transitions. [2023-11-23 21:29:11,258 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 203 transitions. Word has length 136 [2023-11-23 21:29:11,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:29:11,259 INFO L495 AbstractCegarLoop]: Abstraction has 130 states and 203 transitions. [2023-11-23 21:29:11,260 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 3 states have internal predecessors, (39), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-11-23 21:29:11,260 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 203 transitions. [2023-11-23 21:29:11,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2023-11-23 21:29:11,263 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:29:11,264 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:29:11,274 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_390ccde6-b500-4d40-a2d2-b107d2381385/bin/utaipan-verify-mE87zJ7Ire/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 [2023-11-23 21:29:11,475 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_390ccde6-b500-4d40-a2d2-b107d2381385/bin/utaipan-verify-mE87zJ7Ire/cvc4 --incremental --print-success --lang smt (4)] Ended with exit code 0 [2023-11-23 21:29:11,673 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_390ccde6-b500-4d40-a2d2-b107d2381385/bin/utaipan-verify-mE87zJ7Ire/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 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_390ccde6-b500-4d40-a2d2-b107d2381385/bin/utaipan-verify-mE87zJ7Ire/cvc4 --incremental --print-success --lang smt [2023-11-23 21:29:11,673 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:29:11,674 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:29:11,674 INFO L85 PathProgramCache]: Analyzing trace with hash 1871844011, now seen corresponding path program 1 times [2023-11-23 21:29:11,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 21:29:11,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [767409626] [2023-11-23 21:29:11,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:29:11,681 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 [2023-11-23 21:29:11,681 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_390ccde6-b500-4d40-a2d2-b107d2381385/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 21:29:11,682 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_390ccde6-b500-4d40-a2d2-b107d2381385/bin/utaipan-verify-mE87zJ7Ire/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) [2023-11-23 21:29:11,689 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_390ccde6-b500-4d40-a2d2-b107d2381385/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-11-23 21:29:12,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:29:12,025 INFO L262 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-23 21:29:12,032 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:29:14,687 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 382 proven. 81 refuted. 0 times theorem prover too weak. 297 trivial. 0 not checked. [2023-11-23 21:29:14,687 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 21:29:15,889 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-23 21:29:15,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [767409626] [2023-11-23 21:29:15,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [767409626] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 21:29:15,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [497415499] [2023-11-23 21:29:15,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:29:15,890 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-23 21:29:15,891 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_390ccde6-b500-4d40-a2d2-b107d2381385/bin/utaipan-verify-mE87zJ7Ire/cvc4 [2023-11-23 21:29:15,892 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_390ccde6-b500-4d40-a2d2-b107d2381385/bin/utaipan-verify-mE87zJ7Ire/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-23 21:29:15,907 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_390ccde6-b500-4d40-a2d2-b107d2381385/bin/utaipan-verify-mE87zJ7Ire/cvc4 --incremental --print-success --lang smt (6)] Waiting until timeout for monitored process [2023-11-23 21:29:16,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:29:16,355 INFO L262 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-23 21:29:16,360 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:29:16,636 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-11-23 21:29:16,636 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:29:16,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [497415499] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:29:16,637 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 21:29:16,637 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 12 [2023-11-23 21:29:16,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67293614] [2023-11-23 21:29:16,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:29:16,638 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 21:29:16,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-23 21:29:16,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 21:29:16,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2023-11-23 21:29:16,641 INFO L87 Difference]: Start difference. First operand 130 states and 203 transitions. Second operand has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-11-23 21:29:17,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:29:17,579 INFO L93 Difference]: Finished difference Result 378 states and 582 transitions. [2023-11-23 21:29:17,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 21:29:17,580 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 136 [2023-11-23 21:29:17,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:29:17,585 INFO L225 Difference]: With dead ends: 378 [2023-11-23 21:29:17,585 INFO L226 Difference]: Without dead ends: 249 [2023-11-23 21:29:17,587 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 345 GetRequests, 333 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2023-11-23 21:29:17,597 INFO L413 NwaCegarLoop]: 117 mSDtfsCounter, 152 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 239 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-23 21:29:17,598 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [152 Valid, 239 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-23 21:29:17,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2023-11-23 21:29:17,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 209. [2023-11-23 21:29:17,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 148 states have (on average 1.4189189189189189) internal successors, (210), 150 states have internal predecessors, (210), 56 states have call successors, (56), 4 states have call predecessors, (56), 4 states have return successors, (56), 54 states have call predecessors, (56), 56 states have call successors, (56) [2023-11-23 21:29:17,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 322 transitions. [2023-11-23 21:29:17,662 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 322 transitions. Word has length 136 [2023-11-23 21:29:17,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:29:17,663 INFO L495 AbstractCegarLoop]: Abstraction has 209 states and 322 transitions. [2023-11-23 21:29:17,664 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-11-23 21:29:17,664 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 322 transitions. [2023-11-23 21:29:17,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2023-11-23 21:29:17,669 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:29:17,669 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:29:17,683 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_390ccde6-b500-4d40-a2d2-b107d2381385/bin/utaipan-verify-mE87zJ7Ire/cvc4 --incremental --print-success --lang smt (6)] Ended with exit code 0 [2023-11-23 21:29:17,880 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_390ccde6-b500-4d40-a2d2-b107d2381385/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-11-23 21:29:18,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_390ccde6-b500-4d40-a2d2-b107d2381385/bin/utaipan-verify-mE87zJ7Ire/cvc4 --incremental --print-success --lang smt,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_390ccde6-b500-4d40-a2d2-b107d2381385/bin/utaipan-verify-mE87zJ7Ire/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 [2023-11-23 21:29:18,073 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:29:18,074 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:29:18,074 INFO L85 PathProgramCache]: Analyzing trace with hash -330297427, now seen corresponding path program 1 times [2023-11-23 21:29:18,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 21:29:18,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1921190560] [2023-11-23 21:29:18,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:29:18,076 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 [2023-11-23 21:29:18,076 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_390ccde6-b500-4d40-a2d2-b107d2381385/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 21:29:18,083 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_390ccde6-b500-4d40-a2d2-b107d2381385/bin/utaipan-verify-mE87zJ7Ire/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) [2023-11-23 21:29:18,084 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_390ccde6-b500-4d40-a2d2-b107d2381385/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-11-23 21:29:18,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:29:18,479 INFO L262 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-23 21:29:18,485 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:29:20,979 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 382 proven. 81 refuted. 0 times theorem prover too weak. 297 trivial. 0 not checked. [2023-11-23 21:29:20,980 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 21:29:22,341 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-23 21:29:22,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1921190560] [2023-11-23 21:29:22,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1921190560] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 21:29:22,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1139778510] [2023-11-23 21:29:22,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:29:22,342 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-23 21:29:22,342 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_390ccde6-b500-4d40-a2d2-b107d2381385/bin/utaipan-verify-mE87zJ7Ire/cvc4 [2023-11-23 21:29:22,345 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_390ccde6-b500-4d40-a2d2-b107d2381385/bin/utaipan-verify-mE87zJ7Ire/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-23 21:29:22,346 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_390ccde6-b500-4d40-a2d2-b107d2381385/bin/utaipan-verify-mE87zJ7Ire/cvc4 --incremental --print-success --lang smt (8)] Waiting until timeout for monitored process [2023-11-23 21:29:23,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:29:23,416 INFO L262 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-23 21:29:23,420 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:29:25,379 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 382 proven. 81 refuted. 0 times theorem prover too weak. 297 trivial. 0 not checked. [2023-11-23 21:29:25,380 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 21:29:26,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1139778510] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 21:29:26,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [962948897] [2023-11-23 21:29:26,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:29:26,177 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:29:26,177 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_390ccde6-b500-4d40-a2d2-b107d2381385/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:29:26,178 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_390ccde6-b500-4d40-a2d2-b107d2381385/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:29:26,200 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_390ccde6-b500-4d40-a2d2-b107d2381385/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-23 21:29:26,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:29:26,384 INFO L262 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-23 21:29:26,389 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:29:28,247 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 382 proven. 81 refuted. 0 times theorem prover too weak. 297 trivial. 0 not checked. [2023-11-23 21:29:28,247 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 21:29:29,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [962948897] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 21:29:29,053 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 21:29:29,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 9 [2023-11-23 21:29:29,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577782305] [2023-11-23 21:29:29,054 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 21:29:29,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-23 21:29:29,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-23 21:29:29,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-23 21:29:29,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2023-11-23 21:29:29,057 INFO L87 Difference]: Start difference. First operand 209 states and 322 transitions. Second operand has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 3 states have call successors, (20), 3 states have call predecessors, (20), 4 states have return successors, (20), 2 states have call predecessors, (20), 3 states have call successors, (20) [2023-11-23 21:29:31,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:29:31,579 INFO L93 Difference]: Finished difference Result 567 states and 865 transitions. [2023-11-23 21:29:31,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-23 21:29:31,593 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 3 states have call successors, (20), 3 states have call predecessors, (20), 4 states have return successors, (20), 2 states have call predecessors, (20), 3 states have call successors, (20) Word has length 136 [2023-11-23 21:29:31,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:29:31,600 INFO L225 Difference]: With dead ends: 567 [2023-11-23 21:29:31,601 INFO L226 Difference]: Without dead ends: 359 [2023-11-23 21:29:31,603 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 641 GetRequests, 620 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=173, Invalid=333, Unknown=0, NotChecked=0, Total=506 [2023-11-23 21:29:31,604 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 132 mSDsluCounter, 403 mSDsCounter, 0 mSdLazyCounter, 285 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 472 SdHoareTripleChecker+Invalid, 331 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 285 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-11-23 21:29:31,605 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [132 Valid, 472 Invalid, 331 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 285 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-11-23 21:29:31,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359 states. [2023-11-23 21:29:31,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359 to 255. [2023-11-23 21:29:31,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 171 states have (on average 1.368421052631579) internal successors, (234), 173 states have internal predecessors, (234), 76 states have call successors, (76), 7 states have call predecessors, (76), 7 states have return successors, (76), 74 states have call predecessors, (76), 76 states have call successors, (76) [2023-11-23 21:29:31,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 386 transitions. [2023-11-23 21:29:31,670 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 386 transitions. Word has length 136 [2023-11-23 21:29:31,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:29:31,671 INFO L495 AbstractCegarLoop]: Abstraction has 255 states and 386 transitions. [2023-11-23 21:29:31,671 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 3 states have call successors, (20), 3 states have call predecessors, (20), 4 states have return successors, (20), 2 states have call predecessors, (20), 3 states have call successors, (20) [2023-11-23 21:29:31,671 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 386 transitions. [2023-11-23 21:29:31,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2023-11-23 21:29:31,676 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:29:31,676 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:29:31,686 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_390ccde6-b500-4d40-a2d2-b107d2381385/bin/utaipan-verify-mE87zJ7Ire/cvc4 --incremental --print-success --lang smt (8)] Forceful destruction successful, exit code 0 [2023-11-23 21:29:31,891 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_390ccde6-b500-4d40-a2d2-b107d2381385/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Ended with exit code 0 [2023-11-23 21:29:32,106 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_390ccde6-b500-4d40-a2d2-b107d2381385/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-23 21:29:32,284 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_390ccde6-b500-4d40-a2d2-b107d2381385/bin/utaipan-verify-mE87zJ7Ire/cvc4 --incremental --print-success --lang smt,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_390ccde6-b500-4d40-a2d2-b107d2381385/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_390ccde6-b500-4d40-a2d2-b107d2381385/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:29:32,284 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:29:32,285 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:29:32,285 INFO L85 PathProgramCache]: Analyzing trace with hash 148985099, now seen corresponding path program 1 times [2023-11-23 21:29:32,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 21:29:32,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1600431771] [2023-11-23 21:29:32,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:29:32,286 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 [2023-11-23 21:29:32,286 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_390ccde6-b500-4d40-a2d2-b107d2381385/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 21:29:32,288 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_390ccde6-b500-4d40-a2d2-b107d2381385/bin/utaipan-verify-mE87zJ7Ire/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) [2023-11-23 21:29:32,312 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_390ccde6-b500-4d40-a2d2-b107d2381385/bin/utaipan-verify-mE87zJ7Ire/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 (10)] Waiting until timeout for monitored process [2023-11-23 21:29:32,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:29:32,591 INFO L262 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-23 21:29:32,594 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:29:32,961 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 343 proven. 39 refuted. 0 times theorem prover too weak. 378 trivial. 0 not checked. [2023-11-23 21:29:32,961 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 21:29:33,295 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 18 proven. 39 refuted. 0 times theorem prover too weak. 703 trivial. 0 not checked. [2023-11-23 21:29:33,296 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-23 21:29:33,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1600431771] [2023-11-23 21:29:33,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1600431771] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 21:29:33,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1519467174] [2023-11-23 21:29:33,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:29:33,297 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-23 21:29:33,297 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_390ccde6-b500-4d40-a2d2-b107d2381385/bin/utaipan-verify-mE87zJ7Ire/cvc4 [2023-11-23 21:29:33,298 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_390ccde6-b500-4d40-a2d2-b107d2381385/bin/utaipan-verify-mE87zJ7Ire/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-23 21:29:33,327 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_390ccde6-b500-4d40-a2d2-b107d2381385/bin/utaipan-verify-mE87zJ7Ire/cvc4 --incremental --print-success --lang smt (11)] Waiting until timeout for monitored process [2023-11-23 21:29:33,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:29:33,711 INFO L262 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-23 21:29:33,722 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:29:33,806 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-11-23 21:29:33,807 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:29:33,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1519467174] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:29:33,807 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-23 21:29:33,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5, 5] total 8 [2023-11-23 21:29:33,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447874227] [2023-11-23 21:29:33,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:29:33,808 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:29:33,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-23 21:29:33,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:29:33,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-11-23 21:29:33,810 INFO L87 Difference]: Start difference. First operand 255 states and 386 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-11-23 21:29:34,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:29:34,406 INFO L93 Difference]: Finished difference Result 590 states and 893 transitions. [2023-11-23 21:29:34,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:29:34,407 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 136 [2023-11-23 21:29:34,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:29:34,412 INFO L225 Difference]: With dead ends: 590 [2023-11-23 21:29:34,412 INFO L226 Difference]: Without dead ends: 382 [2023-11-23 21:29:34,414 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 405 GetRequests, 398 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-11-23 21:29:34,415 INFO L413 NwaCegarLoop]: 138 mSDtfsCounter, 49 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 228 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-23 21:29:34,416 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 228 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-23 21:29:34,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 382 states. [2023-11-23 21:29:34,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 382 to 376. [2023-11-23 21:29:34,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 376 states, 264 states have (on average 1.3825757575757576) internal successors, (365), 270 states have internal predecessors, (365), 100 states have call successors, (100), 11 states have call predecessors, (100), 11 states have return successors, (100), 94 states have call predecessors, (100), 100 states have call successors, (100) [2023-11-23 21:29:34,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376 states to 376 states and 565 transitions. [2023-11-23 21:29:34,483 INFO L78 Accepts]: Start accepts. Automaton has 376 states and 565 transitions. Word has length 136 [2023-11-23 21:29:34,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:29:34,484 INFO L495 AbstractCegarLoop]: Abstraction has 376 states and 565 transitions. [2023-11-23 21:29:34,485 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-11-23 21:29:34,485 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states and 565 transitions. [2023-11-23 21:29:34,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2023-11-23 21:29:34,490 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:29:34,490 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:29:34,507 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_390ccde6-b500-4d40-a2d2-b107d2381385/bin/utaipan-verify-mE87zJ7Ire/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 (10)] Forceful destruction successful, exit code 0 [2023-11-23 21:29:34,702 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_390ccde6-b500-4d40-a2d2-b107d2381385/bin/utaipan-verify-mE87zJ7Ire/cvc4 --incremental --print-success --lang smt (11)] Forceful destruction successful, exit code 0 [2023-11-23 21:29:34,900 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_390ccde6-b500-4d40-a2d2-b107d2381385/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_390ccde6-b500-4d40-a2d2-b107d2381385/bin/utaipan-verify-mE87zJ7Ire/cvc4 --incremental --print-success --lang smt [2023-11-23 21:29:34,900 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:29:34,901 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:29:34,901 INFO L85 PathProgramCache]: Analyzing trace with hash -621628319, now seen corresponding path program 1 times [2023-11-23 21:29:34,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 21:29:34,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [559458213] [2023-11-23 21:29:34,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:29:34,901 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 [2023-11-23 21:29:34,902 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_390ccde6-b500-4d40-a2d2-b107d2381385/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 21:29:34,903 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_390ccde6-b500-4d40-a2d2-b107d2381385/bin/utaipan-verify-mE87zJ7Ire/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) [2023-11-23 21:29:34,904 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_390ccde6-b500-4d40-a2d2-b107d2381385/bin/utaipan-verify-mE87zJ7Ire/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 (12)] Waiting until timeout for monitored process [2023-11-23 21:29:35,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:29:35,288 INFO L262 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-23 21:29:35,292 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:29:35,635 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 397 proven. 30 refuted. 0 times theorem prover too weak. 333 trivial. 0 not checked. [2023-11-23 21:29:35,635 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 21:29:35,990 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 27 proven. 30 refuted. 0 times theorem prover too weak. 703 trivial. 0 not checked. [2023-11-23 21:29:35,990 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-23 21:29:35,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [559458213] [2023-11-23 21:29:35,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [559458213] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 21:29:35,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1135962293] [2023-11-23 21:29:35,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:29:35,991 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-23 21:29:35,991 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_390ccde6-b500-4d40-a2d2-b107d2381385/bin/utaipan-verify-mE87zJ7Ire/cvc4 [2023-11-23 21:29:35,992 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_390ccde6-b500-4d40-a2d2-b107d2381385/bin/utaipan-verify-mE87zJ7Ire/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-23 21:29:35,996 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_390ccde6-b500-4d40-a2d2-b107d2381385/bin/utaipan-verify-mE87zJ7Ire/cvc4 --incremental --print-success --lang smt (13)] Waiting until timeout for monitored process [2023-11-23 21:29:37,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:29:37,125 INFO L262 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-23 21:29:37,129 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:29:37,410 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 397 proven. 30 refuted. 0 times theorem prover too weak. 333 trivial. 0 not checked. [2023-11-23 21:29:37,411 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 21:29:37,661 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 27 proven. 30 refuted. 0 times theorem prover too weak. 703 trivial. 0 not checked. [2023-11-23 21:29:37,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1135962293] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 21:29:37,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [187119766] [2023-11-23 21:29:37,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:29:37,662 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:29:37,662 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_390ccde6-b500-4d40-a2d2-b107d2381385/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:29:37,663 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_390ccde6-b500-4d40-a2d2-b107d2381385/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:29:37,664 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_390ccde6-b500-4d40-a2d2-b107d2381385/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-23 21:29:37,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:29:37,812 INFO L262 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-23 21:29:37,816 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:29:38,093 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 397 proven. 30 refuted. 0 times theorem prover too weak. 333 trivial. 0 not checked. [2023-11-23 21:29:38,094 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 21:29:38,347 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 27 proven. 30 refuted. 0 times theorem prover too weak. 703 trivial. 0 not checked. [2023-11-23 21:29:38,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [187119766] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 21:29:38,347 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2023-11-23 21:29:38,347 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 5, 5, 5, 5] total 8 [2023-11-23 21:29:38,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287583847] [2023-11-23 21:29:38,348 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2023-11-23 21:29:38,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-23 21:29:38,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-23 21:29:38,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-23 21:29:38,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-11-23 21:29:38,350 INFO L87 Difference]: Start difference. First operand 376 states and 565 transitions. Second operand has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 2 states have call successors, (30), 2 states have call predecessors, (30), 4 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2023-11-23 21:29:39,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:29:39,710 INFO L93 Difference]: Finished difference Result 711 states and 1048 transitions. [2023-11-23 21:29:39,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-23 21:29:39,713 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 2 states have call successors, (30), 2 states have call predecessors, (30), 4 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) Word has length 137 [2023-11-23 21:29:39,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:29:39,718 INFO L225 Difference]: With dead ends: 711 [2023-11-23 21:29:39,718 INFO L226 Difference]: Without dead ends: 382 [2023-11-23 21:29:39,719 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 828 GetRequests, 808 SyntacticMatches, 3 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=112, Invalid=230, Unknown=0, NotChecked=0, Total=342 [2023-11-23 21:29:39,720 INFO L413 NwaCegarLoop]: 82 mSDtfsCounter, 152 mSDsluCounter, 187 mSDsCounter, 0 mSdLazyCounter, 190 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 162 SdHoareTripleChecker+Valid, 269 SdHoareTripleChecker+Invalid, 257 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-23 21:29:39,721 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [162 Valid, 269 Invalid, 257 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 190 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-23 21:29:39,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 382 states. [2023-11-23 21:29:39,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 382 to 354. [2023-11-23 21:29:39,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 354 states, 245 states have (on average 1.3183673469387756) internal successors, (323), 250 states have internal predecessors, (323), 94 states have call successors, (94), 14 states have call predecessors, (94), 14 states have return successors, (94), 89 states have call predecessors, (94), 94 states have call successors, (94) [2023-11-23 21:29:39,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 354 states to 354 states and 511 transitions. [2023-11-23 21:29:39,771 INFO L78 Accepts]: Start accepts. Automaton has 354 states and 511 transitions. Word has length 137 [2023-11-23 21:29:39,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:29:39,772 INFO L495 AbstractCegarLoop]: Abstraction has 354 states and 511 transitions. [2023-11-23 21:29:39,773 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 2 states have call successors, (30), 2 states have call predecessors, (30), 4 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2023-11-23 21:29:39,773 INFO L276 IsEmpty]: Start isEmpty. Operand 354 states and 511 transitions. [2023-11-23 21:29:39,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2023-11-23 21:29:39,778 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:29:39,778 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:29:39,813 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_390ccde6-b500-4d40-a2d2-b107d2381385/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-11-23 21:29:40,003 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_390ccde6-b500-4d40-a2d2-b107d2381385/bin/utaipan-verify-mE87zJ7Ire/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 (12)] Forceful destruction successful, exit code 0 [2023-11-23 21:29:40,203 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_390ccde6-b500-4d40-a2d2-b107d2381385/bin/utaipan-verify-mE87zJ7Ire/cvc4 --incremental --print-success --lang smt (13)] Ended with exit code 0