./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_floatingpointinfluence_no-floats_file-95.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 30e01a73 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58c92444-a82b-4f99-9bdb-6674578d6ef8/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58c92444-a82b-4f99-9bdb-6674578d6ef8/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_58c92444-a82b-4f99-9bdb-6674578d6ef8/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58c92444-a82b-4f99-9bdb-6674578d6ef8/bin/utaipan-verify-mE87zJ7Ire/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_floatingpointinfluence_no-floats_file-95.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58c92444-a82b-4f99-9bdb-6674578d6ef8/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_58c92444-a82b-4f99-9bdb-6674578d6ef8/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 71fe371b3648f25840026374af24a61fcda8c56564401f21f9e8d01fae27caed --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 21:11:09,847 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 21:11:09,976 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58c92444-a82b-4f99-9bdb-6674578d6ef8/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-11-23 21:11:09,984 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 21:11:09,985 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 21:11:10,037 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 21:11:10,039 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 21:11:10,039 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 21:11:10,041 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 21:11:10,046 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 21:11:10,046 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-23 21:11:10,048 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-23 21:11:10,048 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-23 21:11:10,050 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-23 21:11:10,051 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-23 21:11:10,051 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-23 21:11:10,052 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-23 21:11:10,052 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-23 21:11:10,053 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-23 21:11:10,053 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-23 21:11:10,054 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-23 21:11:10,054 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-23 21:11:10,056 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 21:11:10,056 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 21:11:10,057 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-23 21:11:10,057 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 21:11:10,058 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-23 21:11:10,058 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 21:11:10,059 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 21:11:10,059 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 21:11:10,061 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 21:11:10,061 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-23 21:11:10,061 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 21:11:10,062 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 21:11:10,062 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 21:11:10,062 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 21:11:10,063 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 21:11:10,063 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:11:10,074 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 21:11:10,074 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 21:11:10,075 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 21:11:10,075 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-23 21:11:10,075 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 21:11:10,076 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 21:11:10,076 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 21:11:10,077 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-23 21:11:10,077 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 21:11:10,077 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_58c92444-a82b-4f99-9bdb-6674578d6ef8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58c92444-a82b-4f99-9bdb-6674578d6ef8/bin/utaipan-verify-mE87zJ7Ire Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 71fe371b3648f25840026374af24a61fcda8c56564401f21f9e8d01fae27caed [2023-11-23 21:11:10,455 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 21:11:10,485 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 21:11:10,488 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 21:11:10,490 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 21:11:10,491 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 21:11:10,492 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58c92444-a82b-4f99-9bdb-6674578d6ef8/bin/utaipan-verify-mE87zJ7Ire/../../sv-benchmarks/c/hardness-nfm22/hardness_floatingpointinfluence_no-floats_file-95.i [2023-11-23 21:11:13,634 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 21:11:13,894 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 21:11:13,895 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58c92444-a82b-4f99-9bdb-6674578d6ef8/sv-benchmarks/c/hardness-nfm22/hardness_floatingpointinfluence_no-floats_file-95.i [2023-11-23 21:11:13,922 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58c92444-a82b-4f99-9bdb-6674578d6ef8/bin/utaipan-verify-mE87zJ7Ire/data/2722cbe31/2910d5ab46e74b2ea608f4c111858966/FLAG0491cfa31 [2023-11-23 21:11:13,938 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58c92444-a82b-4f99-9bdb-6674578d6ef8/bin/utaipan-verify-mE87zJ7Ire/data/2722cbe31/2910d5ab46e74b2ea608f4c111858966 [2023-11-23 21:11:13,941 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 21:11:13,943 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 21:11:13,944 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 21:11:13,945 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 21:11:13,951 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 21:11:13,952 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:11:13" (1/1) ... [2023-11-23 21:11:13,953 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4695ecde and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:11:13, skipping insertion in model container [2023-11-23 21:11:13,953 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:11:13" (1/1) ... [2023-11-23 21:11:14,001 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 21:11:14,181 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_58c92444-a82b-4f99-9bdb-6674578d6ef8/sv-benchmarks/c/hardness-nfm22/hardness_floatingpointinfluence_no-floats_file-95.i[916,929] [2023-11-23 21:11:14,228 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:11:14,239 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 21:11:14,253 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_58c92444-a82b-4f99-9bdb-6674578d6ef8/sv-benchmarks/c/hardness-nfm22/hardness_floatingpointinfluence_no-floats_file-95.i[916,929] [2023-11-23 21:11:14,289 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:11:14,311 INFO L206 MainTranslator]: Completed translation [2023-11-23 21:11:14,312 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:11:14 WrapperNode [2023-11-23 21:11:14,312 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 21:11:14,313 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 21:11:14,313 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 21:11:14,314 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 21:11:14,321 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:11:14" (1/1) ... [2023-11-23 21:11:14,331 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:11:14" (1/1) ... [2023-11-23 21:11:14,391 INFO L138 Inliner]: procedures = 26, calls = 32, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 148 [2023-11-23 21:11:14,391 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 21:11:14,392 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 21:11:14,392 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 21:11:14,392 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 21:11:14,403 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:11:14" (1/1) ... [2023-11-23 21:11:14,403 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:11:14" (1/1) ... [2023-11-23 21:11:14,418 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:11:14" (1/1) ... [2023-11-23 21:11:14,418 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:11:14" (1/1) ... [2023-11-23 21:11:14,428 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:11:14" (1/1) ... [2023-11-23 21:11:14,432 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:11:14" (1/1) ... [2023-11-23 21:11:14,435 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:11:14" (1/1) ... [2023-11-23 21:11:14,438 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:11:14" (1/1) ... [2023-11-23 21:11:14,443 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 21:11:14,444 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 21:11:14,444 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 21:11:14,444 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 21:11:14,445 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:11:14" (1/1) ... [2023-11-23 21:11:14,464 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:11:14,486 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58c92444-a82b-4f99-9bdb-6674578d6ef8/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:11:14,500 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58c92444-a82b-4f99-9bdb-6674578d6ef8/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 21:11:14,517 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58c92444-a82b-4f99-9bdb-6674578d6ef8/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 21:11:14,535 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 21:11:14,536 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-23 21:11:14,536 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-23 21:11:14,536 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 21:11:14,536 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 21:11:14,536 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 21:11:14,632 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 21:11:14,635 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 21:11:15,076 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 21:11:15,307 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 21:11:15,307 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-23 21:11:15,309 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:11:15 BoogieIcfgContainer [2023-11-23 21:11:15,310 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 21:11:15,313 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 21:11:15,313 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 21:11:15,317 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 21:11:15,317 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 09:11:13" (1/3) ... [2023-11-23 21:11:15,319 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2dcb272b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:11:15, skipping insertion in model container [2023-11-23 21:11:15,319 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:11:14" (2/3) ... [2023-11-23 21:11:15,321 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2dcb272b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:11:15, skipping insertion in model container [2023-11-23 21:11:15,322 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:11:15" (3/3) ... [2023-11-23 21:11:15,323 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_floatingpointinfluence_no-floats_file-95.i [2023-11-23 21:11:15,347 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 21:11:15,348 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 21:11:15,413 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 21:11:15,422 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;@43749fe1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 21:11:15,422 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 21:11:15,429 INFO L276 IsEmpty]: Start isEmpty. Operand has 37 states, 15 states have (on average 1.2) internal successors, (18), 16 states have internal predecessors, (18), 19 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2023-11-23 21:11:15,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-11-23 21:11:15,442 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:11:15,443 INFO L195 NwaCegarLoop]: trace histogram [19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:11:15,444 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:11:15,452 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:11:15,452 INFO L85 PathProgramCache]: Analyzing trace with hash -1226435308, now seen corresponding path program 1 times [2023-11-23 21:11:15,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:11:15,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [392432312] [2023-11-23 21:11:15,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:11:15,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:11:15,677 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 21:11:15,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1912101415] [2023-11-23 21:11:15,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:11:15,678 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:11:15,679 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58c92444-a82b-4f99-9bdb-6674578d6ef8/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:11:15,681 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58c92444-a82b-4f99-9bdb-6674578d6ef8/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:11:15,689 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58c92444-a82b-4f99-9bdb-6674578d6ef8/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-23 21:11:16,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 21:11:16,074 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-23 21:11:16,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 21:11:16,263 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-11-23 21:11:16,266 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-23 21:11:16,268 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-23 21:11:16,290 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58c92444-a82b-4f99-9bdb-6674578d6ef8/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-23 21:11:16,477 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58c92444-a82b-4f99-9bdb-6674578d6ef8/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:11:16,481 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-11-23 21:11:16,485 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-23 21:11:16,567 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 09:11:16 BoogieIcfgContainer [2023-11-23 21:11:16,567 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-23 21:11:16,568 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-23 21:11:16,568 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-23 21:11:16,569 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-23 21:11:16,569 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:11:15" (3/4) ... [2023-11-23 21:11:16,579 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-23 21:11:16,580 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-23 21:11:16,581 INFO L158 Benchmark]: Toolchain (without parser) took 2638.29ms. Allocated memory was 157.3MB in the beginning and 188.7MB in the end (delta: 31.5MB). Free memory was 127.1MB in the beginning and 149.6MB in the end (delta: -22.5MB). Peak memory consumption was 9.4MB. Max. memory is 16.1GB. [2023-11-23 21:11:16,582 INFO L158 Benchmark]: CDTParser took 0.45ms. Allocated memory is still 127.9MB. Free memory is still 100.4MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 21:11:16,583 INFO L158 Benchmark]: CACSL2BoogieTranslator took 367.92ms. Allocated memory is still 157.3MB. Free memory was 127.1MB in the beginning and 114.6MB in the end (delta: 12.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-23 21:11:16,583 INFO L158 Benchmark]: Boogie Procedure Inliner took 78.31ms. Allocated memory is still 157.3MB. Free memory was 114.0MB in the beginning and 111.1MB in the end (delta: 2.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-23 21:11:16,584 INFO L158 Benchmark]: Boogie Preprocessor took 51.23ms. Allocated memory is still 157.3MB. Free memory was 111.1MB in the beginning and 109.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-23 21:11:16,586 INFO L158 Benchmark]: RCFGBuilder took 865.90ms. Allocated memory is still 157.3MB. Free memory was 109.0MB in the beginning and 88.8MB in the end (delta: 20.3MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-11-23 21:11:16,588 INFO L158 Benchmark]: TraceAbstraction took 1254.72ms. Allocated memory was 157.3MB in the beginning and 188.7MB in the end (delta: 31.5MB). Free memory was 88.0MB in the beginning and 150.7MB in the end (delta: -62.7MB). Peak memory consumption was 34.6MB. Max. memory is 16.1GB. [2023-11-23 21:11:16,589 INFO L158 Benchmark]: Witness Printer took 12.03ms. Allocated memory is still 188.7MB. Free memory is still 149.6MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 21:11:16,593 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.45ms. Allocated memory is still 127.9MB. Free memory is still 100.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 367.92ms. Allocated memory is still 157.3MB. Free memory was 127.1MB in the beginning and 114.6MB in the end (delta: 12.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 78.31ms. Allocated memory is still 157.3MB. Free memory was 114.0MB in the beginning and 111.1MB in the end (delta: 2.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 51.23ms. Allocated memory is still 157.3MB. Free memory was 111.1MB in the beginning and 109.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 865.90ms. Allocated memory is still 157.3MB. Free memory was 109.0MB in the beginning and 88.8MB in the end (delta: 20.3MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * TraceAbstraction took 1254.72ms. Allocated memory was 157.3MB in the beginning and 188.7MB in the end (delta: 31.5MB). Free memory was 88.0MB in the beginning and 150.7MB in the end (delta: -62.7MB). Peak memory consumption was 34.6MB. Max. memory is 16.1GB. * Witness Printer took 12.03ms. Allocated memory is still 188.7MB. Free memory is still 149.6MB. 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 to_int at line 41, overapproximation of shiftRight at line 47, overapproximation of bitwiseAnd at line 43. Possible FailurePath: [L21] unsigned char isInitial = 0; [L22] signed long int var_1_1 = -64; [L23] signed long int var_1_3 = 1; [L24] signed long int var_1_4 = 8; [L25] signed long int var_1_5 = 255; [L26] signed long int var_1_6 = 50; [L27] unsigned char var_1_7 = 0; [L28] unsigned long int var_1_8 = 8; [L29] unsigned char var_1_10 = 32; [L30] unsigned char var_1_11 = 5; [L31] unsigned char var_1_12 = 2; [L32] signed short int var_1_13 = 0; [L33] unsigned long int var_1_14 = 16; [L34] signed char var_1_16 = -1; [L35] signed char var_1_17 = -16; [L36] unsigned char last_1_var_1_7 = 0; [L95] isInitial = 1 [L96] FCALL initially() [L97] COND TRUE 1 [L98] CALL updateLastVariables() [L88] last_1_var_1_7 = var_1_7 [L98] RET updateLastVariables() [L99] CALL updateVariables() [L58] var_1_4 = __VERIFIER_nondet_long() [L59] CALL assume_abort_if_not(var_1_4 >= 0) VAL [\old(cond)=1, isInitial=1, last_1_var_1_7=0, var_1_10=32, var_1_11=5, var_1_12=2, var_1_13=0, var_1_14=16, var_1_16=-1, var_1_17=-16, var_1_1=-64, var_1_3=1, var_1_4=0, var_1_5=255, var_1_6=50, var_1_7=0, var_1_8=8] [L20] COND FALSE !(!cond) [L59] RET assume_abort_if_not(var_1_4 >= 0) VAL [isInitial=1, last_1_var_1_7=0, var_1_10=32, var_1_11=5, var_1_12=2, var_1_13=0, var_1_14=16, var_1_16=-1, var_1_17=-16, var_1_1=-64, var_1_3=1, var_1_4=0, var_1_5=255, var_1_6=50, var_1_7=0, var_1_8=8] [L60] CALL assume_abort_if_not(var_1_4 <= 2147483647) VAL [\old(cond)=1, isInitial=1, last_1_var_1_7=0, var_1_10=32, var_1_11=5, var_1_12=2, var_1_13=0, var_1_14=16, var_1_16=-1, var_1_17=-16, var_1_1=-64, var_1_3=1, var_1_4=0, var_1_5=255, var_1_6=50, var_1_7=0, var_1_8=8] [L20] COND FALSE !(!cond) [L60] RET assume_abort_if_not(var_1_4 <= 2147483647) VAL [isInitial=1, last_1_var_1_7=0, var_1_10=32, var_1_11=5, var_1_12=2, var_1_13=0, var_1_14=16, var_1_16=-1, var_1_17=-16, var_1_1=-64, var_1_3=1, var_1_4=0, var_1_5=255, var_1_6=50, var_1_7=0, var_1_8=8] [L61] var_1_5 = __VERIFIER_nondet_long() [L62] CALL assume_abort_if_not(var_1_5 >= 0) VAL [\old(cond)=1, isInitial=1, last_1_var_1_7=0, var_1_10=32, var_1_11=5, var_1_12=2, var_1_13=0, var_1_14=16, var_1_16=-1, var_1_17=-16, var_1_1=-64, var_1_3=1, var_1_4=0, var_1_5=0, var_1_6=50, var_1_7=0, var_1_8=8] [L20] COND FALSE !(!cond) [L62] RET assume_abort_if_not(var_1_5 >= 0) VAL [isInitial=1, last_1_var_1_7=0, var_1_10=32, var_1_11=5, var_1_12=2, var_1_13=0, var_1_14=16, var_1_16=-1, var_1_17=-16, var_1_1=-64, var_1_3=1, var_1_4=0, var_1_5=0, var_1_6=50, var_1_7=0, var_1_8=8] [L63] CALL assume_abort_if_not(var_1_5 <= 2147483647) VAL [\old(cond)=1, isInitial=1, last_1_var_1_7=0, var_1_10=32, var_1_11=5, var_1_12=2, var_1_13=0, var_1_14=16, var_1_16=-1, var_1_17=-16, var_1_1=-64, var_1_3=1, var_1_4=0, var_1_5=0, var_1_6=50, var_1_7=0, var_1_8=8] [L20] COND FALSE !(!cond) [L63] RET assume_abort_if_not(var_1_5 <= 2147483647) VAL [isInitial=1, last_1_var_1_7=0, var_1_10=32, var_1_11=5, var_1_12=2, var_1_13=0, var_1_14=16, var_1_16=-1, var_1_17=-16, var_1_1=-64, var_1_3=1, var_1_4=0, var_1_5=0, var_1_6=50, var_1_7=0, var_1_8=8] [L64] var_1_6 = __VERIFIER_nondet_long() [L65] CALL assume_abort_if_not(var_1_6 >= 0) VAL [\old(cond)=1, isInitial=1, last_1_var_1_7=0, var_1_10=32, var_1_11=5, var_1_12=2, var_1_13=0, var_1_14=16, var_1_16=-1, var_1_17=-16, var_1_1=-64, var_1_3=1, var_1_4=0, var_1_5=0, var_1_6=0, var_1_7=0, var_1_8=8] [L20] COND FALSE !(!cond) [L65] RET assume_abort_if_not(var_1_6 >= 0) VAL [isInitial=1, last_1_var_1_7=0, var_1_10=32, var_1_11=5, var_1_12=2, var_1_13=0, var_1_14=16, var_1_16=-1, var_1_17=-16, var_1_1=-64, var_1_3=1, var_1_4=0, var_1_5=0, var_1_6=0, var_1_7=0, var_1_8=8] [L66] CALL assume_abort_if_not(var_1_6 <= 2147483647) VAL [\old(cond)=1, isInitial=1, last_1_var_1_7=0, var_1_10=32, var_1_11=5, var_1_12=2, var_1_13=0, var_1_14=16, var_1_16=-1, var_1_17=-16, var_1_1=-64, var_1_3=1, var_1_4=0, var_1_5=0, var_1_6=0, var_1_7=0, var_1_8=8] [L20] COND FALSE !(!cond) [L66] RET assume_abort_if_not(var_1_6 <= 2147483647) VAL [isInitial=1, last_1_var_1_7=0, var_1_10=32, var_1_11=5, var_1_12=2, var_1_13=0, var_1_14=16, var_1_16=-1, var_1_17=-16, var_1_1=-64, var_1_3=1, var_1_4=0, var_1_5=0, var_1_6=0, var_1_7=0, var_1_8=8] [L67] var_1_8 = __VERIFIER_nondet_ulong() [L68] CALL assume_abort_if_not(var_1_8 >= 0) VAL [\old(cond)=1, isInitial=1, last_1_var_1_7=0, var_1_10=32, var_1_11=5, var_1_12=2, var_1_13=0, var_1_14=16, var_1_16=-1, var_1_17=-16, var_1_1=-64, var_1_3=1, var_1_4=0, var_1_5=0, var_1_6=0, var_1_7=0] [L20] COND FALSE !(!cond) [L68] RET assume_abort_if_not(var_1_8 >= 0) VAL [isInitial=1, last_1_var_1_7=0, var_1_10=32, var_1_11=5, var_1_12=2, var_1_13=0, var_1_14=16, var_1_16=-1, var_1_17=-16, var_1_1=-64, var_1_3=1, var_1_4=0, var_1_5=0, var_1_6=0, var_1_7=0] [L69] CALL assume_abort_if_not(var_1_8 <= 2147483647) VAL [\old(cond)=1, isInitial=1, last_1_var_1_7=0, var_1_10=32, var_1_11=5, var_1_12=2, var_1_13=0, var_1_14=16, var_1_16=-1, var_1_17=-16, var_1_1=-64, var_1_3=1, var_1_4=0, var_1_5=0, var_1_6=0, var_1_7=0, var_1_8=2147483647] [L20] COND FALSE !(!cond) [L69] RET assume_abort_if_not(var_1_8 <= 2147483647) VAL [isInitial=1, last_1_var_1_7=0, var_1_10=32, var_1_11=5, var_1_12=2, var_1_13=0, var_1_14=16, var_1_16=-1, var_1_17=-16, var_1_1=-64, var_1_3=1, var_1_4=0, var_1_5=0, var_1_6=0, var_1_7=0, var_1_8=2147483647] [L70] var_1_10 = __VERIFIER_nondet_uchar() [L71] CALL assume_abort_if_not(var_1_10 >= 0) VAL [\old(cond)=1, isInitial=1, last_1_var_1_7=0, var_1_11=5, var_1_12=2, var_1_13=0, var_1_14=16, var_1_16=-1, var_1_17=-16, var_1_1=-64, var_1_3=1, var_1_4=0, var_1_5=0, var_1_6=0, var_1_7=0, var_1_8=2147483647] [L20] COND FALSE !(!cond) [L71] RET assume_abort_if_not(var_1_10 >= 0) VAL [isInitial=1, last_1_var_1_7=0, var_1_11=5, var_1_12=2, var_1_13=0, var_1_14=16, var_1_16=-1, var_1_17=-16, var_1_1=-64, var_1_3=1, var_1_4=0, var_1_5=0, var_1_6=0, var_1_7=0, var_1_8=2147483647] [L72] CALL assume_abort_if_not(var_1_10 <= 127) VAL [\old(cond)=1, isInitial=1, last_1_var_1_7=0, var_1_10=0, var_1_11=5, var_1_12=2, var_1_13=0, var_1_14=16, var_1_16=-1, var_1_17=-16, var_1_1=-64, var_1_3=1, var_1_4=0, var_1_5=0, var_1_6=0, var_1_7=0, var_1_8=2147483647] [L20] COND FALSE !(!cond) [L72] RET assume_abort_if_not(var_1_10 <= 127) VAL [isInitial=1, last_1_var_1_7=0, var_1_10=0, var_1_11=5, var_1_12=2, var_1_13=0, var_1_14=16, var_1_16=-1, var_1_17=-16, var_1_1=-64, var_1_3=1, var_1_4=0, var_1_5=0, var_1_6=0, var_1_7=0, var_1_8=2147483647] [L73] var_1_11 = __VERIFIER_nondet_uchar() [L74] CALL assume_abort_if_not(var_1_11 >= 0) VAL [\old(cond)=1, isInitial=1, last_1_var_1_7=0, var_1_10=0, var_1_12=2, var_1_13=0, var_1_14=16, var_1_16=-1, var_1_17=-16, var_1_1=-64, var_1_3=1, var_1_4=0, var_1_5=0, var_1_6=0, var_1_7=0, var_1_8=2147483647] [L20] COND FALSE !(!cond) [L74] RET assume_abort_if_not(var_1_11 >= 0) VAL [isInitial=1, last_1_var_1_7=0, var_1_10=0, var_1_12=2, var_1_13=0, var_1_14=16, var_1_16=-1, var_1_17=-16, var_1_1=-64, var_1_3=1, var_1_4=0, var_1_5=0, var_1_6=0, var_1_7=0, var_1_8=2147483647] [L75] CALL assume_abort_if_not(var_1_11 <= 127) VAL [\old(cond)=1, isInitial=1, last_1_var_1_7=0, var_1_10=0, var_1_11=127, var_1_12=2, var_1_13=0, var_1_14=16, var_1_16=-1, var_1_17=-16, var_1_1=-64, var_1_3=1, var_1_4=0, var_1_5=0, var_1_6=0, var_1_7=0, var_1_8=2147483647] [L20] COND FALSE !(!cond) [L75] RET assume_abort_if_not(var_1_11 <= 127) VAL [isInitial=1, last_1_var_1_7=0, var_1_10=0, var_1_11=127, var_1_12=2, var_1_13=0, var_1_14=16, var_1_16=-1, var_1_17=-16, var_1_1=-64, var_1_3=1, var_1_4=0, var_1_5=0, var_1_6=0, var_1_7=0, var_1_8=2147483647] [L76] var_1_12 = __VERIFIER_nondet_uchar() [L77] CALL assume_abort_if_not(var_1_12 >= 0) VAL [\old(cond)=1, isInitial=1, last_1_var_1_7=0, var_1_10=0, var_1_11=127, var_1_13=0, var_1_14=16, var_1_16=-1, var_1_17=-16, var_1_1=-64, var_1_3=1, var_1_4=0, var_1_5=0, var_1_6=0, var_1_7=0, var_1_8=2147483647] [L20] COND FALSE !(!cond) [L77] RET assume_abort_if_not(var_1_12 >= 0) VAL [isInitial=1, last_1_var_1_7=0, var_1_10=0, var_1_11=127, var_1_13=0, var_1_14=16, var_1_16=-1, var_1_17=-16, var_1_1=-64, var_1_3=1, var_1_4=0, var_1_5=0, var_1_6=0, var_1_7=0, var_1_8=2147483647] [L78] CALL assume_abort_if_not(var_1_12 <= 127) VAL [\old(cond)=1, isInitial=1, last_1_var_1_7=0, var_1_10=0, var_1_11=127, var_1_12=0, var_1_13=0, var_1_14=16, var_1_16=-1, var_1_17=-16, var_1_1=-64, var_1_3=1, var_1_4=0, var_1_5=0, var_1_6=0, var_1_7=0, var_1_8=2147483647] [L20] COND FALSE !(!cond) [L78] RET assume_abort_if_not(var_1_12 <= 127) VAL [isInitial=1, last_1_var_1_7=0, var_1_10=0, var_1_11=127, var_1_12=0, var_1_13=0, var_1_14=16, var_1_16=-1, var_1_17=-16, var_1_1=-64, var_1_3=1, var_1_4=0, var_1_5=0, var_1_6=0, var_1_7=0, var_1_8=2147483647] [L79] var_1_14 = __VERIFIER_nondet_ulong() [L80] CALL assume_abort_if_not(var_1_14 >= 0) VAL [\old(cond)=1, isInitial=1, last_1_var_1_7=0, var_1_10=0, var_1_11=127, var_1_12=0, var_1_13=0, var_1_16=-1, var_1_17=-16, var_1_1=-64, var_1_3=1, var_1_4=0, var_1_5=0, var_1_6=0, var_1_7=0, var_1_8=2147483647] [L20] COND FALSE !(!cond) [L80] RET assume_abort_if_not(var_1_14 >= 0) VAL [isInitial=1, last_1_var_1_7=0, var_1_10=0, var_1_11=127, var_1_12=0, var_1_13=0, var_1_16=-1, var_1_17=-16, var_1_1=-64, var_1_3=1, var_1_4=0, var_1_5=0, var_1_6=0, var_1_7=0, var_1_8=2147483647] [L81] CALL assume_abort_if_not(var_1_14 <= 4294967295) VAL [\old(cond)=1, isInitial=1, last_1_var_1_7=0, var_1_10=0, var_1_11=127, var_1_12=0, var_1_13=0, var_1_16=-1, var_1_17=-16, var_1_1=-64, var_1_3=1, var_1_4=0, var_1_5=0, var_1_6=0, var_1_7=0, var_1_8=2147483647] [L20] COND FALSE !(!cond) [L81] RET assume_abort_if_not(var_1_14 <= 4294967295) VAL [isInitial=1, last_1_var_1_7=0, var_1_10=0, var_1_11=127, var_1_12=0, var_1_13=0, var_1_16=-1, var_1_17=-16, var_1_1=-64, var_1_3=1, var_1_4=0, var_1_5=0, var_1_6=0, var_1_7=0, var_1_8=2147483647] [L82] CALL assume_abort_if_not(var_1_14 != 0) VAL [\old(cond)=1, isInitial=1, last_1_var_1_7=0, var_1_10=0, var_1_11=127, var_1_12=0, var_1_13=0, var_1_14=1, var_1_16=-1, var_1_17=-16, var_1_1=-64, var_1_3=1, var_1_4=0, var_1_5=0, var_1_6=0, var_1_7=0, var_1_8=2147483647] [L20] COND FALSE !(!cond) [L82] RET assume_abort_if_not(var_1_14 != 0) VAL [isInitial=1, last_1_var_1_7=0, var_1_10=0, var_1_11=127, var_1_12=0, var_1_13=0, var_1_14=1, var_1_16=-1, var_1_17=-16, var_1_1=-64, var_1_3=1, var_1_4=0, var_1_5=0, var_1_6=0, var_1_7=0, var_1_8=2147483647] [L83] var_1_17 = __VERIFIER_nondet_char() [L84] CALL assume_abort_if_not(var_1_17 >= -127) VAL [\old(cond)=1, isInitial=1, last_1_var_1_7=0, var_1_10=0, var_1_11=127, var_1_12=0, var_1_13=0, var_1_14=1, var_1_16=-1, var_1_17=0, var_1_1=-64, var_1_3=1, var_1_4=0, var_1_5=0, var_1_6=0, var_1_7=0, var_1_8=2147483647] [L20] COND FALSE !(!cond) [L84] RET assume_abort_if_not(var_1_17 >= -127) VAL [isInitial=1, last_1_var_1_7=0, var_1_10=0, var_1_11=127, var_1_12=0, var_1_13=0, var_1_14=1, var_1_16=-1, var_1_17=0, var_1_1=-64, var_1_3=1, var_1_4=0, var_1_5=0, var_1_6=0, var_1_7=0, var_1_8=2147483647] [L85] CALL assume_abort_if_not(var_1_17 <= 126) VAL [\old(cond)=1, isInitial=1, last_1_var_1_7=0, var_1_10=0, var_1_11=127, var_1_12=0, var_1_13=0, var_1_14=1, var_1_16=-1, var_1_17=0, var_1_1=-64, var_1_3=1, var_1_4=0, var_1_5=0, var_1_6=0, var_1_7=0, var_1_8=2147483647] [L20] COND FALSE !(!cond) [L85] RET assume_abort_if_not(var_1_17 <= 126) VAL [isInitial=1, last_1_var_1_7=0, var_1_10=0, var_1_11=127, var_1_12=0, var_1_13=0, var_1_14=1, var_1_16=-1, var_1_17=0, var_1_1=-64, var_1_3=1, var_1_4=0, var_1_5=0, var_1_6=0, var_1_7=0, var_1_8=2147483647] [L99] RET updateVariables() [L100] CALL step() [L40] var_1_1 = ((((last_1_var_1_7) < 0 ) ? -(last_1_var_1_7) : (last_1_var_1_7))) [L41] var_1_3 = ((var_1_4 - var_1_5) + ((((256.5f) < ((var_1_6 - 16.125f))) ? (256.5f) : ((var_1_6 - 16.125f))))) [L42] var_1_16 = var_1_17 [L43] EXPR var_1_16 & var_1_1 [L43] signed long int stepLocal_0 = var_1_16 & var_1_1; [L44] COND TRUE (- (3351680781u - var_1_8)) > stepLocal_0 [L45] var_1_7 = (((((var_1_10) < (((((var_1_11) < 0 ) ? -(var_1_11) : (var_1_11))))) ? (var_1_10) : (((((var_1_11) < 0 ) ? -(var_1_11) : (var_1_11)))))) + var_1_12) [L47] EXPR var_1_7 >> var_1_7 [L47] COND FALSE !((var_1_16 / var_1_14) < (var_1_7 >> var_1_7)) [L50] COND TRUE var_1_16 >= var_1_1 [L51] var_1_13 = (-5 + (var_1_12 - var_1_11)) [L100] RET step() [L101] CALL, EXPR property() [L91] EXPR ((var_1_1 == ((signed long int) ((((last_1_var_1_7) < 0 ) ? -(last_1_var_1_7) : (last_1_var_1_7))))) && (var_1_3 == ((signed long int) ((var_1_4 - var_1_5) + ((((256.5f) < ((var_1_6 - 16.125f))) ? (256.5f) : ((var_1_6 - 16.125f)))))))) && (((- (3351680781u - var_1_8)) > (var_1_16 & var_1_1)) ? (var_1_7 == ((unsigned char) (((((var_1_10) < (((((var_1_11) < 0 ) ? -(var_1_11) : (var_1_11))))) ? (var_1_10) : (((((var_1_11) < 0 ) ? -(var_1_11) : (var_1_11)))))) + var_1_12))) : 1) [L91] EXPR (((var_1_1 == ((signed long int) ((((last_1_var_1_7) < 0 ) ? -(last_1_var_1_7) : (last_1_var_1_7))))) && (var_1_3 == ((signed long int) ((var_1_4 - var_1_5) + ((((256.5f) < ((var_1_6 - 16.125f))) ? (256.5f) : ((var_1_6 - 16.125f)))))))) && (((- (3351680781u - var_1_8)) > (var_1_16 & var_1_1)) ? (var_1_7 == ((unsigned char) (((((var_1_10) < (((((var_1_11) < 0 ) ? -(var_1_11) : (var_1_11))))) ? (var_1_10) : (((((var_1_11) < 0 ) ? -(var_1_11) : (var_1_11)))))) + var_1_12))) : 1)) && (((var_1_16 / var_1_14) < (var_1_7 >> var_1_7)) ? (var_1_13 == ((signed short int) ((((4 - var_1_11) < 0 ) ? -(4 - var_1_11) : (4 - var_1_11))))) : ((var_1_16 >= var_1_1) ? (var_1_13 == ((signed short int) (-5 + (var_1_12 - var_1_11)))) : (var_1_13 == ((signed short int) 256)))) [L91-L92] return ((((var_1_1 == ((signed long int) ((((last_1_var_1_7) < 0 ) ? -(last_1_var_1_7) : (last_1_var_1_7))))) && (var_1_3 == ((signed long int) ((var_1_4 - var_1_5) + ((((256.5f) < ((var_1_6 - 16.125f))) ? (256.5f) : ((var_1_6 - 16.125f)))))))) && (((- (3351680781u - var_1_8)) > (var_1_16 & var_1_1)) ? (var_1_7 == ((unsigned char) (((((var_1_10) < (((((var_1_11) < 0 ) ? -(var_1_11) : (var_1_11))))) ? (var_1_10) : (((((var_1_11) < 0 ) ? -(var_1_11) : (var_1_11)))))) + var_1_12))) : 1)) && (((var_1_16 / var_1_14) < (var_1_7 >> var_1_7)) ? (var_1_13 == ((signed short int) ((((4 - var_1_11) < 0 ) ? -(4 - var_1_11) : (4 - var_1_11))))) : ((var_1_16 >= var_1_1) ? (var_1_13 == ((signed short int) (-5 + (var_1_12 - var_1_11)))) : (var_1_13 == ((signed short int) 256))))) && (var_1_16 == ((signed char) var_1_17)) ; [L101] RET, EXPR property() [L101] CALL __VERIFIER_assert(property()) [L19] COND TRUE !(cond) VAL [\old(cond)=0, cond=0, isInitial=1, last_1_var_1_7=0, var_1_10=0, var_1_11=127, var_1_12=0, var_1_13=-132, var_1_14=1, var_1_16=0, var_1_17=0, var_1_1=0, var_1_3=15, var_1_4=0, var_1_5=0, var_1_6=0, var_1_7=0, var_1_8=2147483647] [L19] reach_error() VAL [\old(cond)=0, cond=0, isInitial=1, last_1_var_1_7=0, var_1_10=0, var_1_11=127, var_1_12=0, var_1_13=-132, var_1_14=1, var_1_16=0, var_1_17=0, var_1_1=0, var_1_3=15, var_1_4=0, var_1_5=0, var_1_6=0, var_1_7=0, var_1_8=2147483647] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 37 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.1s, OverallIterations: 1, TraceHistogramMax: 19, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=37occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 70 NumberOfCodeBlocks, 70 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2023-11-23 21:11:16,649 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58c92444-a82b-4f99-9bdb-6674578d6ef8/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-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58c92444-a82b-4f99-9bdb-6674578d6ef8/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58c92444-a82b-4f99-9bdb-6674578d6ef8/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_58c92444-a82b-4f99-9bdb-6674578d6ef8/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58c92444-a82b-4f99-9bdb-6674578d6ef8/bin/utaipan-verify-mE87zJ7Ire/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_floatingpointinfluence_no-floats_file-95.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58c92444-a82b-4f99-9bdb-6674578d6ef8/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_58c92444-a82b-4f99-9bdb-6674578d6ef8/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 71fe371b3648f25840026374af24a61fcda8c56564401f21f9e8d01fae27caed --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 21:11:19,362 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 21:11:19,449 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58c92444-a82b-4f99-9bdb-6674578d6ef8/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2023-11-23 21:11:19,456 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 21:11:19,456 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 21:11:19,485 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 21:11:19,486 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 21:11:19,487 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 21:11:19,488 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 21:11:19,488 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 21:11:19,489 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-23 21:11:19,489 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-23 21:11:19,490 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-23 21:11:19,491 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-23 21:11:19,491 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-23 21:11:19,492 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-23 21:11:19,493 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 21:11:19,494 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 21:11:19,494 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-23 21:11:19,495 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-23 21:11:19,495 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 21:11:19,496 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 21:11:19,496 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 21:11:19,497 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 21:11:19,497 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-23 21:11:19,498 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-23 21:11:19,498 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-23 21:11:19,499 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-23 21:11:19,499 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 21:11:19,500 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 21:11:19,500 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 21:11:19,501 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-23 21:11:19,501 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 21:11:19,502 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 21:11:19,502 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:11:19,502 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 21:11:19,502 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 21:11:19,503 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 21:11:19,503 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-11-23 21:11:19,503 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-23 21:11:19,504 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 21:11:19,504 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 21:11:19,504 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-23 21:11:19,505 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 21:11:19,505 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_58c92444-a82b-4f99-9bdb-6674578d6ef8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58c92444-a82b-4f99-9bdb-6674578d6ef8/bin/utaipan-verify-mE87zJ7Ire Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 71fe371b3648f25840026374af24a61fcda8c56564401f21f9e8d01fae27caed [2023-11-23 21:11:19,951 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 21:11:19,974 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 21:11:19,977 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 21:11:19,979 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 21:11:19,979 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 21:11:19,981 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58c92444-a82b-4f99-9bdb-6674578d6ef8/bin/utaipan-verify-mE87zJ7Ire/../../sv-benchmarks/c/hardness-nfm22/hardness_floatingpointinfluence_no-floats_file-95.i [2023-11-23 21:11:23,213 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 21:11:23,521 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 21:11:23,522 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58c92444-a82b-4f99-9bdb-6674578d6ef8/sv-benchmarks/c/hardness-nfm22/hardness_floatingpointinfluence_no-floats_file-95.i [2023-11-23 21:11:23,530 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58c92444-a82b-4f99-9bdb-6674578d6ef8/bin/utaipan-verify-mE87zJ7Ire/data/1cf1a0837/89891f11486b46c3be20fb830da18be5/FLAG44d9d936b [2023-11-23 21:11:23,545 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58c92444-a82b-4f99-9bdb-6674578d6ef8/bin/utaipan-verify-mE87zJ7Ire/data/1cf1a0837/89891f11486b46c3be20fb830da18be5 [2023-11-23 21:11:23,547 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 21:11:23,549 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 21:11:23,551 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 21:11:23,551 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 21:11:23,561 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 21:11:23,563 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:11:23" (1/1) ... [2023-11-23 21:11:23,564 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a9edf33 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:11:23, skipping insertion in model container [2023-11-23 21:11:23,565 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:11:23" (1/1) ... [2023-11-23 21:11:23,607 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 21:11:23,785 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_58c92444-a82b-4f99-9bdb-6674578d6ef8/sv-benchmarks/c/hardness-nfm22/hardness_floatingpointinfluence_no-floats_file-95.i[916,929] [2023-11-23 21:11:23,831 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:11:23,849 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 21:11:23,866 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_58c92444-a82b-4f99-9bdb-6674578d6ef8/sv-benchmarks/c/hardness-nfm22/hardness_floatingpointinfluence_no-floats_file-95.i[916,929] [2023-11-23 21:11:23,900 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:11:23,926 INFO L206 MainTranslator]: Completed translation [2023-11-23 21:11:23,927 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:11:23 WrapperNode [2023-11-23 21:11:23,927 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 21:11:23,928 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 21:11:23,928 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 21:11:23,929 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 21:11:23,944 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:11:23" (1/1) ... [2023-11-23 21:11:23,974 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:11:23" (1/1) ... [2023-11-23 21:11:24,020 INFO L138 Inliner]: procedures = 27, calls = 32, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 107 [2023-11-23 21:11:24,023 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 21:11:24,024 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 21:11:24,025 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 21:11:24,025 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 21:11:24,035 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:11:23" (1/1) ... [2023-11-23 21:11:24,036 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:11:23" (1/1) ... [2023-11-23 21:11:24,051 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:11:23" (1/1) ... [2023-11-23 21:11:24,051 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:11:23" (1/1) ... [2023-11-23 21:11:24,068 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:11:23" (1/1) ... [2023-11-23 21:11:24,072 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:11:23" (1/1) ... [2023-11-23 21:11:24,075 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:11:23" (1/1) ... [2023-11-23 21:11:24,077 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:11:23" (1/1) ... [2023-11-23 21:11:24,081 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 21:11:24,082 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 21:11:24,083 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 21:11:24,083 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 21:11:24,084 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:11:23" (1/1) ... [2023-11-23 21:11:24,095 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:11:24,109 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58c92444-a82b-4f99-9bdb-6674578d6ef8/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:11:24,126 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58c92444-a82b-4f99-9bdb-6674578d6ef8/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 21:11:24,176 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58c92444-a82b-4f99-9bdb-6674578d6ef8/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 21:11:24,189 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 21:11:24,189 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-23 21:11:24,190 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-23 21:11:24,190 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-23 21:11:24,190 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 21:11:24,190 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 21:11:24,322 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 21:11:24,326 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 21:11:28,745 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 21:11:28,804 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 21:11:28,805 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-23 21:11:28,805 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:11:28 BoogieIcfgContainer [2023-11-23 21:11:28,806 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 21:11:28,814 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 21:11:28,814 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 21:11:28,818 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 21:11:28,818 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 09:11:23" (1/3) ... [2023-11-23 21:11:28,819 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24bb18ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:11:28, skipping insertion in model container [2023-11-23 21:11:28,820 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:11:23" (2/3) ... [2023-11-23 21:11:28,821 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24bb18ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:11:28, skipping insertion in model container [2023-11-23 21:11:28,821 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:11:28" (3/3) ... [2023-11-23 21:11:28,822 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_floatingpointinfluence_no-floats_file-95.i [2023-11-23 21:11:28,844 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 21:11:28,845 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 21:11:28,895 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 21:11:28,903 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;@79fe2790, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 21:11:28,903 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 21:11:28,908 INFO L276 IsEmpty]: Start isEmpty. Operand has 44 states, 22 states have (on average 1.3636363636363635) internal successors, (30), 23 states have internal predecessors, (30), 19 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2023-11-23 21:11:28,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-11-23 21:11:28,922 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:11:28,923 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:11:28,924 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:11:28,929 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:11:28,930 INFO L85 PathProgramCache]: Analyzing trace with hash 111626331, now seen corresponding path program 1 times [2023-11-23 21:11:28,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 21:11:28,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1030179817] [2023-11-23 21:11:28,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:11:28,946 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 21:11:28,946 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58c92444-a82b-4f99-9bdb-6674578d6ef8/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 21:11:28,953 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58c92444-a82b-4f99-9bdb-6674578d6ef8/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 21:11:28,965 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58c92444-a82b-4f99-9bdb-6674578d6ef8/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 21:11:29,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:11:29,288 INFO L262 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-23 21:11:29,299 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:11:29,347 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-11-23 21:11:29,347 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:11:29,348 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-23 21:11:29,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1030179817] [2023-11-23 21:11:29,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1030179817] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:11:29,350 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:11:29,350 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 21:11:29,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259578618] [2023-11-23 21:11:29,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:11:29,357 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-23 21:11:29,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-23 21:11:29,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-23 21:11:29,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-23 21:11:29,393 INFO L87 Difference]: Start difference. First operand has 44 states, 22 states have (on average 1.3636363636363635) internal successors, (30), 23 states have internal predecessors, (30), 19 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) Second operand has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-11-23 21:11:31,537 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-23 21:11:31,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:11:31,539 INFO L93 Difference]: Finished difference Result 85 states and 153 transitions. [2023-11-23 21:11:31,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-23 21:11:31,565 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 111 [2023-11-23 21:11:31,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:11:31,573 INFO L225 Difference]: With dead ends: 85 [2023-11-23 21:11:31,573 INFO L226 Difference]: Without dead ends: 42 [2023-11-23 21:11:31,577 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 110 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 21:11:31,581 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-11-23 21:11:31,582 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 59 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 1 Unknown, 0 Unchecked, 2.1s Time] [2023-11-23 21:11:31,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2023-11-23 21:11:31,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2023-11-23 21:11:31,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 21 states have (on average 1.1428571428571428) internal successors, (24), 21 states have internal predecessors, (24), 19 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2023-11-23 21:11:31,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 62 transitions. [2023-11-23 21:11:31,628 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 62 transitions. Word has length 111 [2023-11-23 21:11:31,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:11:31,629 INFO L495 AbstractCegarLoop]: Abstraction has 42 states and 62 transitions. [2023-11-23 21:11:31,629 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-11-23 21:11:31,630 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 62 transitions. [2023-11-23 21:11:31,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-11-23 21:11:31,634 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:11:31,634 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:11:31,642 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58c92444-a82b-4f99-9bdb-6674578d6ef8/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 21:11:31,842 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58c92444-a82b-4f99-9bdb-6674578d6ef8/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 21:11:31,842 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:11:31,843 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:11:31,843 INFO L85 PathProgramCache]: Analyzing trace with hash 667812955, now seen corresponding path program 1 times [2023-11-23 21:11:31,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 21:11:31,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [559374012] [2023-11-23 21:11:31,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:11:31,845 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 21:11:31,846 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58c92444-a82b-4f99-9bdb-6674578d6ef8/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 21:11:31,885 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58c92444-a82b-4f99-9bdb-6674578d6ef8/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 21:11:31,887 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58c92444-a82b-4f99-9bdb-6674578d6ef8/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 21:11:32,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:11:32,155 INFO L262 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-23 21:11:32,163 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:11:32,847 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 340 proven. 33 refuted. 0 times theorem prover too weak. 311 trivial. 0 not checked. [2023-11-23 21:11:32,848 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 21:11:33,104 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-23 21:11:33,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [559374012] [2023-11-23 21:11:33,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [559374012] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 21:11:33,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1695642152] [2023-11-23 21:11:33,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:11:33,106 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-23 21:11:33,106 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58c92444-a82b-4f99-9bdb-6674578d6ef8/bin/utaipan-verify-mE87zJ7Ire/cvc4 [2023-11-23 21:11:33,113 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58c92444-a82b-4f99-9bdb-6674578d6ef8/bin/utaipan-verify-mE87zJ7Ire/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-23 21:11:33,136 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58c92444-a82b-4f99-9bdb-6674578d6ef8/bin/utaipan-verify-mE87zJ7Ire/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2023-11-23 21:11:33,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:11:33,581 INFO L262 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-23 21:11:33,588 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:11:35,148 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 340 proven. 33 refuted. 0 times theorem prover too weak. 311 trivial. 0 not checked. [2023-11-23 21:11:35,148 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 21:11:35,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1695642152] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 21:11:35,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1861747661] [2023-11-23 21:11:35,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:11:35,304 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:11:35,304 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58c92444-a82b-4f99-9bdb-6674578d6ef8/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:11:35,306 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58c92444-a82b-4f99-9bdb-6674578d6ef8/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:11:35,331 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58c92444-a82b-4f99-9bdb-6674578d6ef8/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-23 21:11:35,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:11:35,510 INFO L262 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-23 21:11:35,515 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:11:36,628 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 340 proven. 33 refuted. 0 times theorem prover too weak. 311 trivial. 0 not checked. [2023-11-23 21:11:36,628 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 21:11:36,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1861747661] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 21:11:36,791 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 21:11:36,791 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 12 [2023-11-23 21:11:36,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485578450] [2023-11-23 21:11:36,792 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 21:11:36,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-23 21:11:36,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-23 21:11:36,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-23 21:11:36,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2023-11-23 21:11:36,796 INFO L87 Difference]: Start difference. First operand 42 states and 62 transitions. Second operand has 12 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 12 states have internal predecessors, (47), 4 states have call successors, (38), 4 states have call predecessors, (38), 6 states have return successors, (38), 4 states have call predecessors, (38), 4 states have call successors, (38) [2023-11-23 21:11:40,856 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-23 21:11:42,864 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-23 21:11:44,867 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-23 21:11:45,927 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-23 21:11:48,136 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-23 21:11:50,139 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-23 21:11:52,141 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-23 21:11:54,144 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-23 21:11:56,150 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-23 21:11:58,153 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-23 21:11:59,658 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.50s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-23 21:12:02,360 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-23 21:12:04,367 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-23 21:12:06,369 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-23 21:12:08,447 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-23 21:12:10,450 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-23 21:12:12,458 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-23 21:12:14,418 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.96s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-23 21:12:14,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:12:14,605 INFO L93 Difference]: Finished difference Result 141 states and 199 transitions. [2023-11-23 21:12:14,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-23 21:12:14,631 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 12 states have internal predecessors, (47), 4 states have call successors, (38), 4 states have call predecessors, (38), 6 states have return successors, (38), 4 states have call predecessors, (38), 4 states have call successors, (38) Word has length 112 [2023-11-23 21:12:14,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:12:14,636 INFO L225 Difference]: With dead ends: 141 [2023-11-23 21:12:14,636 INFO L226 Difference]: Without dead ends: 100 [2023-11-23 21:12:14,650 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 374 GetRequests, 346 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 176 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=187, Invalid=625, Unknown=0, NotChecked=0, Total=812 [2023-11-23 21:12:14,652 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 73 mSDsluCounter, 166 mSDsCounter, 0 mSdLazyCounter, 345 mSolverCounterSat, 79 mSolverCounterUnsat, 15 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 36.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 202 SdHoareTripleChecker+Invalid, 439 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 345 IncrementalHoareTripleChecker+Invalid, 15 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 37.0s IncrementalHoareTripleChecker+Time [2023-11-23 21:12:14,652 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 202 Invalid, 439 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 345 Invalid, 15 Unknown, 0 Unchecked, 37.0s Time] [2023-11-23 21:12:14,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2023-11-23 21:12:14,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 46. [2023-11-23 21:12:14,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 24 states have (on average 1.0833333333333333) internal successors, (26), 24 states have internal predecessors, (26), 19 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2023-11-23 21:12:14,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 64 transitions. [2023-11-23 21:12:14,677 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 64 transitions. Word has length 112 [2023-11-23 21:12:14,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:12:14,678 INFO L495 AbstractCegarLoop]: Abstraction has 46 states and 64 transitions. [2023-11-23 21:12:14,679 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 12 states have internal predecessors, (47), 4 states have call successors, (38), 4 states have call predecessors, (38), 6 states have return successors, (38), 4 states have call predecessors, (38), 4 states have call successors, (38) [2023-11-23 21:12:14,679 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 64 transitions. [2023-11-23 21:12:14,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-11-23 21:12:14,681 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:12:14,681 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:12:14,693 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58c92444-a82b-4f99-9bdb-6674578d6ef8/bin/utaipan-verify-mE87zJ7Ire/cvc4 --incremental --print-success --lang smt (4)] Ended with exit code 0 [2023-11-23 21:12:14,892 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58c92444-a82b-4f99-9bdb-6674578d6ef8/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 21:12:15,135 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58c92444-a82b-4f99-9bdb-6674578d6ef8/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-23 21:12:15,286 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58c92444-a82b-4f99-9bdb-6674578d6ef8/bin/utaipan-verify-mE87zJ7Ire/cvc4 --incremental --print-success --lang smt,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58c92444-a82b-4f99-9bdb-6674578d6ef8/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 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58c92444-a82b-4f99-9bdb-6674578d6ef8/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:12:15,286 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:12:15,287 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:12:15,287 INFO L85 PathProgramCache]: Analyzing trace with hash 610554653, now seen corresponding path program 1 times [2023-11-23 21:12:15,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 21:12:15,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1037377365] [2023-11-23 21:12:15,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:12:15,288 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 21:12:15,288 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58c92444-a82b-4f99-9bdb-6674578d6ef8/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 21:12:15,289 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58c92444-a82b-4f99-9bdb-6674578d6ef8/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 21:12:15,292 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58c92444-a82b-4f99-9bdb-6674578d6ef8/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 (6)] Waiting until timeout for monitored process [2023-11-23 21:12:15,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 21:12:15,521 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-23 21:12:15,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 21:12:15,778 ERROR L246 FreeRefinementEngine]: Caught known exception: Invalid model [2023-11-23 21:12:15,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [789390789] [2023-11-23 21:12:15,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:12:15,779 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-23 21:12:15,779 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58c92444-a82b-4f99-9bdb-6674578d6ef8/bin/utaipan-verify-mE87zJ7Ire/cvc4 [2023-11-23 21:12:15,781 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58c92444-a82b-4f99-9bdb-6674578d6ef8/bin/utaipan-verify-mE87zJ7Ire/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-23 21:12:15,788 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58c92444-a82b-4f99-9bdb-6674578d6ef8/bin/utaipan-verify-mE87zJ7Ire/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2023-11-23 21:12:16,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:12:16,458 INFO L262 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 21 conjunts are in the unsatisfiable core [2023-11-23 21:12:16,464 INFO L285 TraceCheckSpWp]: Computing forward predicates...