./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.krebs.4.prop1-func-interl.c --full-output --architecture 64bit -------------------------------------------------------------------------------- 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_5162c309-d6cb-4080-bea8-f7815ee0754c/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5162c309-d6cb-4080-bea8-f7815ee0754c/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_5162c309-d6cb-4080-bea8-f7815ee0754c/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5162c309-d6cb-4080-bea8-f7815ee0754c/bin/utaipan-verify-mE87zJ7Ire/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.krebs.4.prop1-func-interl.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5162c309-d6cb-4080-bea8-f7815ee0754c/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5162c309-d6cb-4080-bea8-f7815ee0754c/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 64bit --witnessprinter.graph.data.programhash a57e2087ba2fb5712da688a78c58574dc68561b7154ad7e0d790d643e6e13ba4 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 21:12:00,106 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 21:12:00,246 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5162c309-d6cb-4080-bea8-f7815ee0754c/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-11-23 21:12:00,255 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 21:12:00,255 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 21:12:00,315 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 21:12:00,316 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 21:12:00,317 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 21:12:00,318 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 21:12:00,323 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 21:12:00,323 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-23 21:12:00,324 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-23 21:12:00,324 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-23 21:12:00,326 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-23 21:12:00,327 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-23 21:12:00,327 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-23 21:12:00,327 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-23 21:12:00,328 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-23 21:12:00,328 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-23 21:12:00,329 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-23 21:12:00,329 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-23 21:12:00,330 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-23 21:12:00,331 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 21:12:00,332 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 21:12:00,332 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 21:12:00,332 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 21:12:00,333 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 21:12:00,333 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 21:12:00,334 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 21:12:00,334 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 21:12:00,335 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 21:12:00,336 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 21:12:00,336 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 21:12:00,336 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 21:12:00,336 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:12:00,337 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 21:12:00,358 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 21:12:00,358 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 21:12:00,358 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-23 21:12:00,359 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 21:12:00,359 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 21:12:00,359 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 21:12:00,359 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-23 21:12:00,360 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 21:12:00,360 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_5162c309-d6cb-4080-bea8-f7815ee0754c/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5162c309-d6cb-4080-bea8-f7815ee0754c/bin/utaipan-verify-mE87zJ7Ire Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a57e2087ba2fb5712da688a78c58574dc68561b7154ad7e0d790d643e6e13ba4 [2023-11-23 21:12:00,702 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 21:12:00,731 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 21:12:00,734 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 21:12:00,735 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 21:12:00,737 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 21:12:00,738 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5162c309-d6cb-4080-bea8-f7815ee0754c/bin/utaipan-verify-mE87zJ7Ire/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.krebs.4.prop1-func-interl.c [2023-11-23 21:12:03,937 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 21:12:04,421 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 21:12:04,421 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5162c309-d6cb-4080-bea8-f7815ee0754c/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.krebs.4.prop1-func-interl.c [2023-11-23 21:12:04,448 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5162c309-d6cb-4080-bea8-f7815ee0754c/bin/utaipan-verify-mE87zJ7Ire/data/1cf784a76/b2f61aa4658541b59e0d8aca5d9aff0f/FLAG794a25aa7 [2023-11-23 21:12:04,467 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5162c309-d6cb-4080-bea8-f7815ee0754c/bin/utaipan-verify-mE87zJ7Ire/data/1cf784a76/b2f61aa4658541b59e0d8aca5d9aff0f [2023-11-23 21:12:04,472 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 21:12:04,474 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 21:12:04,477 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 21:12:04,477 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 21:12:04,483 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 21:12:04,484 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:12:04" (1/1) ... [2023-11-23 21:12:04,485 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@bbda1dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:12:04, skipping insertion in model container [2023-11-23 21:12:04,486 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:12:04" (1/1) ... [2023-11-23 21:12:04,581 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 21:12:04,787 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_5162c309-d6cb-4080-bea8-f7815ee0754c/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.krebs.4.prop1-func-interl.c[1172,1185] [2023-11-23 21:12:05,324 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:12:05,344 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 21:12:05,358 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_5162c309-d6cb-4080-bea8-f7815ee0754c/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.krebs.4.prop1-func-interl.c[1172,1185] [2023-11-23 21:12:05,797 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:12:05,829 INFO L206 MainTranslator]: Completed translation [2023-11-23 21:12:05,830 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:12:05 WrapperNode [2023-11-23 21:12:05,830 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 21:12:05,832 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 21:12:05,832 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 21:12:05,832 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 21:12:05,846 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:12:05" (1/1) ... [2023-11-23 21:12:05,949 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:12:05" (1/1) ... [2023-11-23 21:12:06,813 INFO L138 Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 7057 [2023-11-23 21:12:06,814 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 21:12:06,841 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 21:12:06,841 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 21:12:06,842 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 21:12:06,852 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:12:05" (1/1) ... [2023-11-23 21:12:06,852 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:12:05" (1/1) ... [2023-11-23 21:12:07,116 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:12:05" (1/1) ... [2023-11-23 21:12:07,130 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:12:05" (1/1) ... [2023-11-23 21:12:07,572 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:12:05" (1/1) ... [2023-11-23 21:12:07,620 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:12:05" (1/1) ... [2023-11-23 21:12:07,738 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:12:05" (1/1) ... [2023-11-23 21:12:07,769 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:12:05" (1/1) ... [2023-11-23 21:12:07,959 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 21:12:07,961 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 21:12:07,962 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 21:12:07,963 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 21:12:07,964 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:12:05" (1/1) ... [2023-11-23 21:12:07,971 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:12:07,985 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5162c309-d6cb-4080-bea8-f7815ee0754c/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:12:08,001 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5162c309-d6cb-4080-bea8-f7815ee0754c/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 21:12:08,038 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5162c309-d6cb-4080-bea8-f7815ee0754c/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 21:12:08,051 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 21:12:08,052 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 21:12:08,052 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 21:12:08,052 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 21:12:08,560 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 21:12:08,562 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 21:12:14,254 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 21:12:26,192 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 21:12:26,193 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-23 21:12:26,194 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:12:26 BoogieIcfgContainer [2023-11-23 21:12:26,194 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 21:12:26,197 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 21:12:26,197 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 21:12:26,201 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 21:12:26,201 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 09:12:04" (1/3) ... [2023-11-23 21:12:26,202 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@261e4566 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:12:26, skipping insertion in model container [2023-11-23 21:12:26,202 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:12:05" (2/3) ... [2023-11-23 21:12:26,203 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@261e4566 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:12:26, skipping insertion in model container [2023-11-23 21:12:26,203 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:12:26" (3/3) ... [2023-11-23 21:12:26,204 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.krebs.4.prop1-func-interl.c [2023-11-23 21:12:26,226 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 21:12:26,227 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 21:12:26,274 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 21:12:26,281 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;@663a19bd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 21:12:26,281 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 21:12:26,286 INFO L276 IsEmpty]: Start isEmpty. Operand has 7 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:12:26,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-11-23 21:12:26,292 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:12:26,293 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-11-23 21:12:26,294 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:12:26,299 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:12:26,299 INFO L85 PathProgramCache]: Analyzing trace with hash 271057937, now seen corresponding path program 1 times [2023-11-23 21:12:26,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:12:26,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005422352] [2023-11-23 21:12:26,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:12:26,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:12:27,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 21:12:27,368 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-23 21:12:27,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 21:12:28,345 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-11-23 21:12:28,347 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-23 21:12:28,349 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-23 21:12:28,351 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 21:12:28,356 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-11-23 21:12:28,361 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-23 21:12:28,420 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2023-11-23 21:12:28,451 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 09:12:28 BoogieIcfgContainer [2023-11-23 21:12:28,452 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-23 21:12:28,454 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-23 21:12:28,454 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-23 21:12:28,455 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-23 21:12:28,455 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:12:26" (3/4) ... [2023-11-23 21:12:28,460 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-23 21:12:28,461 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-23 21:12:28,463 INFO L158 Benchmark]: Toolchain (without parser) took 23988.29ms. Allocated memory was 182.5MB in the beginning and 6.0GB in the end (delta: 5.8GB). Free memory was 149.7MB in the beginning and 5.6GB in the end (delta: -5.5GB). Peak memory consumption was 341.3MB. Max. memory is 16.1GB. [2023-11-23 21:12:28,463 INFO L158 Benchmark]: CDTParser took 2.16ms. Allocated memory is still 125.8MB. Free memory is still 98.2MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 21:12:28,464 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1353.63ms. Allocated memory is still 182.5MB. Free memory was 148.8MB in the beginning and 125.5MB in the end (delta: 23.3MB). Peak memory consumption was 97.8MB. Max. memory is 16.1GB. [2023-11-23 21:12:28,465 INFO L158 Benchmark]: Boogie Procedure Inliner took 1008.78ms. Allocated memory was 182.5MB in the beginning and 482.3MB in the end (delta: 299.9MB). Free memory was 125.5MB in the beginning and 334.8MB in the end (delta: -209.3MB). Peak memory consumption was 155.4MB. Max. memory is 16.1GB. [2023-11-23 21:12:28,471 INFO L158 Benchmark]: Boogie Preprocessor took 1118.59ms. Allocated memory is still 482.3MB. Free memory was 334.8MB in the beginning and 293.9MB in the end (delta: 40.9MB). Peak memory consumption was 44.0MB. Max. memory is 16.1GB. [2023-11-23 21:12:28,472 INFO L158 Benchmark]: RCFGBuilder took 18232.96ms. Allocated memory was 482.3MB in the beginning and 3.5GB in the end (delta: 3.0GB). Free memory was 293.9MB in the beginning and 2.9GB in the end (delta: -2.6GB). Peak memory consumption was 681.6MB. Max. memory is 16.1GB. [2023-11-23 21:12:28,474 INFO L158 Benchmark]: TraceAbstraction took 2254.78ms. Allocated memory was 3.5GB in the beginning and 6.0GB in the end (delta: 2.5GB). Free memory was 2.9GB in the beginning and 5.6GB in the end (delta: -2.7GB). Peak memory consumption was 188.7MB. Max. memory is 16.1GB. [2023-11-23 21:12:28,474 INFO L158 Benchmark]: Witness Printer took 7.07ms. Allocated memory is still 6.0GB. Free memory is still 5.6GB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 21:12:28,482 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 2.16ms. Allocated memory is still 125.8MB. Free memory is still 98.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1353.63ms. Allocated memory is still 182.5MB. Free memory was 148.8MB in the beginning and 125.5MB in the end (delta: 23.3MB). Peak memory consumption was 97.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 1008.78ms. Allocated memory was 182.5MB in the beginning and 482.3MB in the end (delta: 299.9MB). Free memory was 125.5MB in the beginning and 334.8MB in the end (delta: -209.3MB). Peak memory consumption was 155.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 1118.59ms. Allocated memory is still 482.3MB. Free memory was 334.8MB in the beginning and 293.9MB in the end (delta: 40.9MB). Peak memory consumption was 44.0MB. Max. memory is 16.1GB. * RCFGBuilder took 18232.96ms. Allocated memory was 482.3MB in the beginning and 3.5GB in the end (delta: 3.0GB). Free memory was 293.9MB in the beginning and 2.9GB in the end (delta: -2.6GB). Peak memory consumption was 681.6MB. Max. memory is 16.1GB. * TraceAbstraction took 2254.78ms. Allocated memory was 3.5GB in the beginning and 6.0GB in the end (delta: 2.5GB). Free memory was 2.9GB in the beginning and 5.6GB in the end (delta: -2.7GB). Peak memory consumption was 188.7MB. Max. memory is 16.1GB. * Witness Printer took 7.07ms. Allocated memory is still 6.0GB. Free memory is still 5.6GB. 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: 21]: 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 bitwiseOr at line 247, overapproximation of bitwiseAnd at line 203. Possible FailurePath: [L26] const SORT_1 mask_SORT_1 = (SORT_1)-1 >> (sizeof(SORT_1) * 8 - 1); [L27] const SORT_1 msb_SORT_1 = (SORT_1)1 << (1 - 1); [L29] const SORT_2 mask_SORT_2 = (SORT_2)-1 >> (sizeof(SORT_2) * 8 - 8); [L30] const SORT_2 msb_SORT_2 = (SORT_2)1 << (8 - 1); [L32] const SORT_3 mask_SORT_3 = (SORT_3)-1 >> (sizeof(SORT_3) * 8 - 24); [L33] const SORT_3 msb_SORT_3 = (SORT_3)1 << (24 - 1); [L35] const SORT_4 mask_SORT_4 = (SORT_4)-1 >> (sizeof(SORT_4) * 8 - 32); [L36] const SORT_4 msb_SORT_4 = (SORT_4)1 << (32 - 1); [L38] const SORT_2 var_5 = 0; [L39] const SORT_1 var_30 = 0; [L40] const SORT_3 var_91 = 0; [L41] const SORT_4 var_93 = 80; [L42] const SORT_2 var_97 = 15; [L43] const SORT_4 var_101 = 1; [L44] const SORT_2 var_107 = 4; [L45] const SORT_4 var_109 = 2; [L46] const SORT_2 var_133 = 12; [L47] const SORT_2 var_160 = 2; [L48] const SORT_2 var_225 = 10; [L50] SORT_1 input_98; [L51] SORT_1 input_108; [L52] SORT_1 input_114; [L53] SORT_1 input_138; [L54] SORT_1 input_141; [L55] SORT_1 input_142; [L56] SORT_1 input_143; [L57] SORT_1 input_144; [L58] SORT_1 input_145; [L59] SORT_1 input_146; [L60] SORT_1 input_167; [L61] SORT_1 input_168; [L62] SORT_1 input_169; [L63] SORT_1 input_194; [L64] SORT_1 input_198; [L65] SORT_1 input_199; [L66] SORT_1 input_245; [L67] SORT_1 input_248; [L68] SORT_1 input_249; [L69] SORT_1 input_272; [L70] SORT_1 input_293; [L71] SORT_1 input_314; [L73] EXPR __VERIFIER_nondet_uchar() & mask_SORT_2 [L73] SORT_2 state_6 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L74] EXPR __VERIFIER_nondet_uchar() & mask_SORT_2 [L74] SORT_2 state_8 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L75] EXPR __VERIFIER_nondet_uchar() & mask_SORT_2 [L75] SORT_2 state_10 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L76] EXPR __VERIFIER_nondet_uchar() & mask_SORT_2 [L76] SORT_2 state_12 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L77] EXPR __VERIFIER_nondet_uchar() & mask_SORT_2 [L77] SORT_2 state_14 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L78] EXPR __VERIFIER_nondet_uchar() & mask_SORT_2 [L78] SORT_2 state_16 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L79] EXPR __VERIFIER_nondet_uchar() & mask_SORT_2 [L79] SORT_2 state_18 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L80] EXPR __VERIFIER_nondet_uchar() & mask_SORT_2 [L80] SORT_2 state_20 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L81] EXPR __VERIFIER_nondet_uchar() & mask_SORT_2 [L81] SORT_2 state_22 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L82] EXPR __VERIFIER_nondet_uchar() & mask_SORT_2 [L82] SORT_2 state_24 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L83] EXPR __VERIFIER_nondet_uchar() & mask_SORT_2 [L83] SORT_2 state_26 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L84] EXPR __VERIFIER_nondet_uchar() & mask_SORT_2 [L84] SORT_2 state_28 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L85] EXPR __VERIFIER_nondet_uchar() & mask_SORT_1 [L85] SORT_1 state_31 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L86] EXPR __VERIFIER_nondet_uchar() & mask_SORT_1 [L86] SORT_1 state_33 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L87] EXPR __VERIFIER_nondet_uchar() & mask_SORT_1 [L87] SORT_1 state_35 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L88] EXPR __VERIFIER_nondet_uchar() & mask_SORT_1 [L88] SORT_1 state_37 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L89] EXPR __VERIFIER_nondet_uchar() & mask_SORT_1 [L89] SORT_1 state_39 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L90] EXPR __VERIFIER_nondet_uchar() & mask_SORT_1 [L90] SORT_1 state_41 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L91] EXPR __VERIFIER_nondet_uchar() & mask_SORT_1 [L91] SORT_1 state_43 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L92] EXPR __VERIFIER_nondet_uchar() & mask_SORT_1 [L92] SORT_1 state_45 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L93] EXPR __VERIFIER_nondet_uchar() & mask_SORT_1 [L93] SORT_1 state_47 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L94] EXPR __VERIFIER_nondet_uchar() & mask_SORT_1 [L94] SORT_1 state_49 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L95] EXPR __VERIFIER_nondet_uchar() & mask_SORT_1 [L95] SORT_1 state_51 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L96] EXPR __VERIFIER_nondet_uchar() & mask_SORT_1 [L96] SORT_1 state_53 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L97] EXPR __VERIFIER_nondet_uchar() & mask_SORT_1 [L97] SORT_1 state_55 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L98] EXPR __VERIFIER_nondet_uchar() & mask_SORT_1 [L98] SORT_1 state_57 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L99] EXPR __VERIFIER_nondet_uchar() & mask_SORT_1 [L99] SORT_1 state_59 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L100] EXPR __VERIFIER_nondet_uchar() & mask_SORT_1 [L100] SORT_1 state_61 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L101] EXPR __VERIFIER_nondet_uchar() & mask_SORT_1 [L101] SORT_1 state_63 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L102] EXPR __VERIFIER_nondet_uchar() & mask_SORT_1 [L102] SORT_1 state_65 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L103] EXPR __VERIFIER_nondet_uchar() & mask_SORT_1 [L103] SORT_1 state_67 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L104] EXPR __VERIFIER_nondet_uchar() & mask_SORT_1 [L104] SORT_1 state_69 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L105] EXPR __VERIFIER_nondet_uchar() & mask_SORT_1 [L105] SORT_1 state_71 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L106] EXPR __VERIFIER_nondet_uchar() & mask_SORT_1 [L106] SORT_1 state_73 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L107] EXPR __VERIFIER_nondet_uchar() & mask_SORT_1 [L107] SORT_1 state_75 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L108] EXPR __VERIFIER_nondet_uchar() & mask_SORT_1 [L108] SORT_1 state_77 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L109] EXPR __VERIFIER_nondet_uchar() & mask_SORT_1 [L109] SORT_1 state_79 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L110] EXPR __VERIFIER_nondet_uchar() & mask_SORT_1 [L110] SORT_1 state_81 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L111] EXPR __VERIFIER_nondet_uchar() & mask_SORT_1 [L111] SORT_1 state_83 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L112] EXPR __VERIFIER_nondet_uchar() & mask_SORT_1 [L112] SORT_1 state_85 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L113] EXPR __VERIFIER_nondet_uchar() & mask_SORT_1 [L113] SORT_1 state_87 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L114] EXPR __VERIFIER_nondet_uchar() & mask_SORT_1 [L114] SORT_1 state_89 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L116] SORT_2 init_7_arg_1 = var_5; [L117] state_6 = init_7_arg_1 [L118] SORT_2 init_9_arg_1 = var_5; [L119] state_8 = init_9_arg_1 [L120] SORT_2 init_11_arg_1 = var_5; [L121] state_10 = init_11_arg_1 [L122] SORT_2 init_13_arg_1 = var_5; [L123] state_12 = init_13_arg_1 [L124] SORT_2 init_15_arg_1 = var_5; [L125] state_14 = init_15_arg_1 [L126] SORT_2 init_17_arg_1 = var_5; [L127] state_16 = init_17_arg_1 [L128] SORT_2 init_19_arg_1 = var_5; [L129] state_18 = init_19_arg_1 [L130] SORT_2 init_21_arg_1 = var_5; [L131] state_20 = init_21_arg_1 [L132] SORT_2 init_23_arg_1 = var_5; [L133] state_22 = init_23_arg_1 [L134] SORT_2 init_25_arg_1 = var_5; [L135] state_24 = init_25_arg_1 [L136] SORT_2 init_27_arg_1 = var_5; [L137] state_26 = init_27_arg_1 [L138] SORT_2 init_29_arg_1 = var_5; [L139] state_28 = init_29_arg_1 [L140] SORT_1 init_32_arg_1 = var_30; [L141] state_31 = init_32_arg_1 [L142] SORT_1 init_34_arg_1 = var_30; [L143] state_33 = init_34_arg_1 [L144] SORT_1 init_36_arg_1 = var_30; [L145] state_35 = init_36_arg_1 [L146] SORT_1 init_38_arg_1 = var_30; [L147] state_37 = init_38_arg_1 [L148] SORT_1 init_40_arg_1 = var_30; [L149] state_39 = init_40_arg_1 [L150] SORT_1 init_42_arg_1 = var_30; [L151] state_41 = init_42_arg_1 [L152] SORT_1 init_44_arg_1 = var_30; [L153] state_43 = init_44_arg_1 [L154] SORT_1 init_46_arg_1 = var_30; [L155] state_45 = init_46_arg_1 [L156] SORT_1 init_48_arg_1 = var_30; [L157] state_47 = init_48_arg_1 [L158] SORT_1 init_50_arg_1 = var_30; [L159] state_49 = init_50_arg_1 [L160] SORT_1 init_52_arg_1 = var_30; [L161] state_51 = init_52_arg_1 [L162] SORT_1 init_54_arg_1 = var_30; [L163] state_53 = init_54_arg_1 [L164] SORT_1 init_56_arg_1 = var_30; [L165] state_55 = init_56_arg_1 [L166] SORT_1 init_58_arg_1 = var_30; [L167] state_57 = init_58_arg_1 [L168] SORT_1 init_60_arg_1 = var_30; [L169] state_59 = init_60_arg_1 [L170] SORT_1 init_62_arg_1 = var_30; [L171] state_61 = init_62_arg_1 [L172] SORT_1 init_64_arg_1 = var_30; [L173] state_63 = init_64_arg_1 [L174] SORT_1 init_66_arg_1 = var_30; [L175] state_65 = init_66_arg_1 [L176] SORT_1 init_68_arg_1 = var_30; [L177] state_67 = init_68_arg_1 [L178] SORT_1 init_70_arg_1 = var_30; [L179] state_69 = init_70_arg_1 [L180] SORT_1 init_72_arg_1 = var_30; [L181] state_71 = init_72_arg_1 [L182] SORT_1 init_74_arg_1 = var_30; [L183] state_73 = init_74_arg_1 [L184] SORT_1 init_76_arg_1 = var_30; [L185] state_75 = init_76_arg_1 [L186] SORT_1 init_78_arg_1 = var_30; [L187] state_77 = init_78_arg_1 [L188] SORT_1 init_80_arg_1 = var_30; [L189] state_79 = init_80_arg_1 [L190] SORT_1 init_82_arg_1 = var_30; [L191] state_81 = init_82_arg_1 [L192] SORT_1 init_84_arg_1 = var_30; [L193] state_83 = init_84_arg_1 [L194] SORT_1 init_86_arg_1 = var_30; [L195] state_85 = init_86_arg_1 [L196] SORT_1 init_88_arg_1 = var_30; [L197] state_87 = init_88_arg_1 [L198] SORT_1 init_90_arg_1 = var_30; [L199] state_89 = init_90_arg_1 VAL [init_11_arg_1=0, init_13_arg_1=0, init_15_arg_1=0, init_17_arg_1=0, init_19_arg_1=0, init_21_arg_1=0, init_23_arg_1=0, init_25_arg_1=0, init_27_arg_1=0, init_29_arg_1=0, init_32_arg_1=0, init_34_arg_1=0, init_36_arg_1=0, init_38_arg_1=0, init_40_arg_1=0, init_42_arg_1=0, init_44_arg_1=0, init_46_arg_1=0, init_48_arg_1=0, init_50_arg_1=0, init_52_arg_1=0, init_54_arg_1=0, init_56_arg_1=0, init_58_arg_1=0, init_60_arg_1=0, init_62_arg_1=0, init_64_arg_1=0, init_66_arg_1=0, init_68_arg_1=0, init_70_arg_1=0, init_72_arg_1=0, init_74_arg_1=0, init_76_arg_1=0, init_78_arg_1=0, init_7_arg_1=0, init_80_arg_1=0, init_82_arg_1=0, init_84_arg_1=0, init_86_arg_1=0, init_88_arg_1=0, init_90_arg_1=0, init_9_arg_1=0, mask_SORT_1=1, mask_SORT_2=255, mask_SORT_3=16777215, mask_SORT_4=4294967295, msb_SORT_1=1, msb_SORT_2=128, msb_SORT_3=8388608, msb_SORT_4=2147483648, state_10=0, state_12=0, state_14=0, state_16=0, state_18=0, state_20=0, state_22=0, state_24=0, state_26=0, state_28=0, state_31=0, state_33=0, state_35=0, state_37=0, state_39=0, state_41=0, state_43=0, state_45=0, state_47=0, state_49=0, state_51=0, state_53=0, state_55=0, state_57=0, state_59=0, state_61=0, state_63=0, state_65=0, state_67=0, state_69=0, state_6=0, state_71=0, state_73=0, state_75=0, state_77=0, state_79=0, state_81=0, state_83=0, state_85=0, state_87=0, state_89=0, state_8=0, var_101=1, var_107=4, var_109=2, var_133=12, var_160=2, var_225=10, var_30=0, var_5=0, var_91=0, var_93=80, var_97=15] [L202] input_98 = __VERIFIER_nondet_uchar() [L203] EXPR input_98 & mask_SORT_1 [L203] input_98 = input_98 & mask_SORT_1 [L204] input_108 = __VERIFIER_nondet_uchar() [L205] EXPR input_108 & mask_SORT_1 [L205] input_108 = input_108 & mask_SORT_1 [L206] input_114 = __VERIFIER_nondet_uchar() [L207] EXPR input_114 & mask_SORT_1 [L207] input_114 = input_114 & mask_SORT_1 [L208] input_138 = __VERIFIER_nondet_uchar() [L209] EXPR input_138 & mask_SORT_1 [L209] input_138 = input_138 & mask_SORT_1 [L210] input_141 = __VERIFIER_nondet_uchar() [L211] EXPR input_141 & mask_SORT_1 [L211] input_141 = input_141 & mask_SORT_1 [L212] input_142 = __VERIFIER_nondet_uchar() [L213] EXPR input_142 & mask_SORT_1 [L213] input_142 = input_142 & mask_SORT_1 [L214] input_143 = __VERIFIER_nondet_uchar() [L215] EXPR input_143 & mask_SORT_1 [L215] input_143 = input_143 & mask_SORT_1 [L216] input_144 = __VERIFIER_nondet_uchar() [L217] EXPR input_144 & mask_SORT_1 [L217] input_144 = input_144 & mask_SORT_1 [L218] input_145 = __VERIFIER_nondet_uchar() [L219] EXPR input_145 & mask_SORT_1 [L219] input_145 = input_145 & mask_SORT_1 [L220] input_146 = __VERIFIER_nondet_uchar() [L221] EXPR input_146 & mask_SORT_1 [L221] input_146 = input_146 & mask_SORT_1 [L222] input_167 = __VERIFIER_nondet_uchar() [L223] EXPR input_167 & mask_SORT_1 [L223] input_167 = input_167 & mask_SORT_1 [L224] input_168 = __VERIFIER_nondet_uchar() [L225] EXPR input_168 & mask_SORT_1 [L225] input_168 = input_168 & mask_SORT_1 [L226] input_169 = __VERIFIER_nondet_uchar() [L227] EXPR input_169 & mask_SORT_1 [L227] input_169 = input_169 & mask_SORT_1 [L228] input_194 = __VERIFIER_nondet_uchar() [L229] EXPR input_194 & mask_SORT_1 [L229] input_194 = input_194 & mask_SORT_1 [L230] input_198 = __VERIFIER_nondet_uchar() [L231] EXPR input_198 & mask_SORT_1 [L231] input_198 = input_198 & mask_SORT_1 [L232] input_199 = __VERIFIER_nondet_uchar() [L233] EXPR input_199 & mask_SORT_1 [L233] input_199 = input_199 & mask_SORT_1 [L234] input_245 = __VERIFIER_nondet_uchar() [L235] EXPR input_245 & mask_SORT_1 [L235] input_245 = input_245 & mask_SORT_1 [L236] input_248 = __VERIFIER_nondet_uchar() [L237] EXPR input_248 & mask_SORT_1 [L237] input_248 = input_248 & mask_SORT_1 [L238] input_249 = __VERIFIER_nondet_uchar() [L239] EXPR input_249 & mask_SORT_1 [L239] input_249 = input_249 & mask_SORT_1 [L240] input_272 = __VERIFIER_nondet_uchar() [L241] input_293 = __VERIFIER_nondet_uchar() [L242] input_314 = __VERIFIER_nondet_uchar() [L245] SORT_3 var_92_arg_0 = var_91; [L246] SORT_2 var_92_arg_1 = state_28; [L247] EXPR ((SORT_4)var_92_arg_0 << 8) | var_92_arg_1 [L247] SORT_4 var_92 = ((SORT_4)var_92_arg_0 << 8) | var_92_arg_1; [L248] EXPR var_92 & mask_SORT_4 [L248] var_92 = var_92 & mask_SORT_4 [L249] SORT_4 var_94_arg_0 = var_92; [L250] SORT_4 var_94_arg_1 = var_93; [L251] SORT_1 var_94 = var_94_arg_0 <= var_94_arg_1; [L252] SORT_1 var_95_arg_0 = ~state_89; [L253] EXPR var_95_arg_0 & mask_SORT_1 [L253] var_95_arg_0 = var_95_arg_0 & mask_SORT_1 [L254] SORT_1 var_95_arg_1 = ~var_94; [L255] EXPR var_95_arg_1 & mask_SORT_1 [L255] var_95_arg_1 = var_95_arg_1 & mask_SORT_1 [L256] EXPR var_95_arg_0 & var_95_arg_1 [L256] SORT_1 var_95 = var_95_arg_0 & var_95_arg_1; [L257] EXPR var_95 & mask_SORT_1 [L257] var_95 = var_95 & mask_SORT_1 [L258] SORT_1 bad_96_arg_0 = var_95; [L259] CALL __VERIFIER_assert(!(bad_96_arg_0)) [L21] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L21] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 7 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 2.1s, OverallIterations: 1, TraceHistogramMax: 1, 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=7occurred 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, 0.9s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 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 21:12:28,533 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5162c309-d6cb-4080-bea8-f7815ee0754c/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_5162c309-d6cb-4080-bea8-f7815ee0754c/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5162c309-d6cb-4080-bea8-f7815ee0754c/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_5162c309-d6cb-4080-bea8-f7815ee0754c/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5162c309-d6cb-4080-bea8-f7815ee0754c/bin/utaipan-verify-mE87zJ7Ire/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.krebs.4.prop1-func-interl.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5162c309-d6cb-4080-bea8-f7815ee0754c/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5162c309-d6cb-4080-bea8-f7815ee0754c/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 64bit --witnessprinter.graph.data.programhash a57e2087ba2fb5712da688a78c58574dc68561b7154ad7e0d790d643e6e13ba4 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 21:12:31,385 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 21:12:31,533 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5162c309-d6cb-4080-bea8-f7815ee0754c/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2023-11-23 21:12:31,543 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 21:12:31,544 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 21:12:31,580 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 21:12:31,581 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 21:12:31,582 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 21:12:31,583 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 21:12:31,589 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 21:12:31,589 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-23 21:12:31,590 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-23 21:12:31,590 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-23 21:12:31,592 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-23 21:12:31,593 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-23 21:12:31,593 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-23 21:12:31,594 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 21:12:31,595 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 21:12:31,595 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 21:12:31,597 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 21:12:31,597 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 21:12:31,598 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 21:12:31,598 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-23 21:12:31,599 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-23 21:12:31,599 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-23 21:12:31,599 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 21:12:31,600 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 21:12:31,600 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 21:12:31,601 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-23 21:12:31,601 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 21:12:31,603 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 21:12:31,603 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:12:31,603 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 21:12:31,604 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 21:12:31,604 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 21:12:31,604 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-11-23 21:12:31,604 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-23 21:12:31,605 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 21:12:31,605 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 21:12:31,606 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-23 21:12:31,606 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 21:12:31,607 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_5162c309-d6cb-4080-bea8-f7815ee0754c/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5162c309-d6cb-4080-bea8-f7815ee0754c/bin/utaipan-verify-mE87zJ7Ire Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a57e2087ba2fb5712da688a78c58574dc68561b7154ad7e0d790d643e6e13ba4 [2023-11-23 21:12:31,996 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 21:12:32,027 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 21:12:32,030 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 21:12:32,031 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 21:12:32,032 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 21:12:32,033 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5162c309-d6cb-4080-bea8-f7815ee0754c/bin/utaipan-verify-mE87zJ7Ire/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.krebs.4.prop1-func-interl.c [2023-11-23 21:12:35,283 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 21:12:35,797 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 21:12:35,797 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5162c309-d6cb-4080-bea8-f7815ee0754c/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.krebs.4.prop1-func-interl.c [2023-11-23 21:12:35,821 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5162c309-d6cb-4080-bea8-f7815ee0754c/bin/utaipan-verify-mE87zJ7Ire/data/d995d8d61/24dd3c22285543dab099bb79d81548e1/FLAGea52bd0b2 [2023-11-23 21:12:35,839 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5162c309-d6cb-4080-bea8-f7815ee0754c/bin/utaipan-verify-mE87zJ7Ire/data/d995d8d61/24dd3c22285543dab099bb79d81548e1 [2023-11-23 21:12:35,845 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 21:12:35,847 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 21:12:35,852 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 21:12:35,852 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 21:12:35,858 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 21:12:35,859 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:12:35" (1/1) ... [2023-11-23 21:12:35,860 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1cdb9f80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:12:35, skipping insertion in model container [2023-11-23 21:12:35,860 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:12:35" (1/1) ... [2023-11-23 21:12:35,945 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 21:12:36,197 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_5162c309-d6cb-4080-bea8-f7815ee0754c/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.krebs.4.prop1-func-interl.c[1172,1185] [2023-11-23 21:12:36,617 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:12:36,629 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 21:12:36,642 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_5162c309-d6cb-4080-bea8-f7815ee0754c/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.krebs.4.prop1-func-interl.c[1172,1185] [2023-11-23 21:12:36,838 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:12:36,856 INFO L206 MainTranslator]: Completed translation [2023-11-23 21:12:36,856 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:12:36 WrapperNode [2023-11-23 21:12:36,857 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 21:12:36,858 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 21:12:36,858 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 21:12:36,858 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 21:12:36,866 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:12:36" (1/1) ... [2023-11-23 21:12:36,943 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:12:36" (1/1) ... [2023-11-23 21:12:37,098 INFO L138 Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1960 [2023-11-23 21:12:37,099 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 21:12:37,101 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 21:12:37,101 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 21:12:37,101 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 21:12:37,112 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:12:36" (1/1) ... [2023-11-23 21:12:37,112 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:12:36" (1/1) ... [2023-11-23 21:12:37,129 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:12:36" (1/1) ... [2023-11-23 21:12:37,130 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:12:36" (1/1) ... [2023-11-23 21:12:37,213 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:12:36" (1/1) ... [2023-11-23 21:12:37,232 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:12:36" (1/1) ... [2023-11-23 21:12:37,242 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:12:36" (1/1) ... [2023-11-23 21:12:37,264 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:12:36" (1/1) ... [2023-11-23 21:12:37,282 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 21:12:37,283 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 21:12:37,283 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 21:12:37,283 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 21:12:37,284 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:12:36" (1/1) ... [2023-11-23 21:12:37,290 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:12:37,301 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5162c309-d6cb-4080-bea8-f7815ee0754c/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:12:37,316 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5162c309-d6cb-4080-bea8-f7815ee0754c/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 21:12:37,344 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5162c309-d6cb-4080-bea8-f7815ee0754c/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 21:12:37,361 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 21:12:37,362 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-23 21:12:37,362 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 21:12:37,362 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 21:12:37,809 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 21:12:37,812 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 21:12:41,290 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 21:12:41,427 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 21:12:41,427 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-23 21:12:41,428 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:12:41 BoogieIcfgContainer [2023-11-23 21:12:41,428 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 21:12:41,432 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 21:12:41,433 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 21:12:41,436 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 21:12:41,437 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 09:12:35" (1/3) ... [2023-11-23 21:12:41,439 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fe42c3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:12:41, skipping insertion in model container [2023-11-23 21:12:41,439 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:12:36" (2/3) ... [2023-11-23 21:12:41,441 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fe42c3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:12:41, skipping insertion in model container [2023-11-23 21:12:41,441 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:12:41" (3/3) ... [2023-11-23 21:12:41,442 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.krebs.4.prop1-func-interl.c [2023-11-23 21:12:41,463 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 21:12:41,464 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 21:12:41,521 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 21:12:41,529 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;@1e3c2c07, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 21:12:41,530 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 21:12:41,534 INFO L276 IsEmpty]: Start isEmpty. Operand has 8 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 7 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:12:41,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-11-23 21:12:41,541 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:12:41,543 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-11-23 21:12:41,544 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:12:41,551 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:12:41,551 INFO L85 PathProgramCache]: Analyzing trace with hash 1827279, now seen corresponding path program 1 times [2023-11-23 21:12:41,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 21:12:41,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1734570634] [2023-11-23 21:12:41,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:12:41,570 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 21:12:41,570 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5162c309-d6cb-4080-bea8-f7815ee0754c/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 21:12:41,576 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5162c309-d6cb-4080-bea8-f7815ee0754c/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 21:12:41,620 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5162c309-d6cb-4080-bea8-f7815ee0754c/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 21:12:42,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:12:42,087 INFO L262 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 18 conjunts are in the unsatisfiable core [2023-11-23 21:12:42,105 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:12:42,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:12:42,378 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:12:42,379 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-23 21:12:42,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1734570634] [2023-11-23 21:12:42,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1734570634] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:12:42,380 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:12:42,381 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:12:42,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663870696] [2023-11-23 21:12:42,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:12:42,391 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 21:12:42,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-23 21:12:42,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 21:12:42,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 21:12:42,435 INFO L87 Difference]: Start difference. First operand has 8 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 7 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:12:42,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:12:42,863 INFO L93 Difference]: Finished difference Result 16 states and 24 transitions. [2023-11-23 21:12:42,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 21:12:42,866 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2023-11-23 21:12:42,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:12:42,873 INFO L225 Difference]: With dead ends: 16 [2023-11-23 21:12:42,874 INFO L226 Difference]: Without dead ends: 9 [2023-11-23 21:12:42,876 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-23 21:12:42,880 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 3 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-23 21:12:42,881 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 6 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-23 21:12:42,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2023-11-23 21:12:42,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 8. [2023-11-23 21:12:42,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:12:42,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2023-11-23 21:12:42,913 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 4 [2023-11-23 21:12:42,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:12:42,914 INFO L495 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2023-11-23 21:12:42,914 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:12:42,914 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2023-11-23 21:12:42,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-23 21:12:42,915 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:12:42,915 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1] [2023-11-23 21:12:42,928 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5162c309-d6cb-4080-bea8-f7815ee0754c/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)] Forceful destruction successful, exit code 0 [2023-11-23 21:12:43,118 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5162c309-d6cb-4080-bea8-f7815ee0754c/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 21:12:43,119 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:12:43,119 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:12:43,119 INFO L85 PathProgramCache]: Analyzing trace with hash -1393329571, now seen corresponding path program 1 times [2023-11-23 21:12:43,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 21:12:43,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [126887924] [2023-11-23 21:12:43,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:12:43,124 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 21:12:43,124 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5162c309-d6cb-4080-bea8-f7815ee0754c/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 21:12:43,125 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5162c309-d6cb-4080-bea8-f7815ee0754c/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 21:12:43,170 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5162c309-d6cb-4080-bea8-f7815ee0754c/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 21:12:44,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:12:44,890 INFO L262 TraceCheckSpWp]: Trace formula consists of 1667 conjuncts, 31 conjunts are in the unsatisfiable core [2023-11-23 21:12:44,913 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:12:45,458 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:12:45,459 INFO L327 TraceCheckSpWp]: Computing backward predicates...