./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.krebs.1.prop1-func-interl.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cf1a7837 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b4ad39d-5e73-4b48-8020-4287181f6d4a/bin/utaipan-verify-NcY6lQBIFX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b4ad39d-5e73-4b48-8020-4287181f6d4a/bin/utaipan-verify-NcY6lQBIFX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b4ad39d-5e73-4b48-8020-4287181f6d4a/bin/utaipan-verify-NcY6lQBIFX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b4ad39d-5e73-4b48-8020-4287181f6d4a/bin/utaipan-verify-NcY6lQBIFX/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.krebs.1.prop1-func-interl.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b4ad39d-5e73-4b48-8020-4287181f6d4a/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b4ad39d-5e73-4b48-8020-4287181f6d4a/bin/utaipan-verify-NcY6lQBIFX --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 2e2a2cb2c4789cd68b1190dca921718c27be66a014c5b9afd684fc837ce3e158 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 00:44:25,954 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 00:44:26,064 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b4ad39d-5e73-4b48-8020-4287181f6d4a/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-11-12 00:44:26,080 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 00:44:26,081 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 00:44:26,128 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 00:44:26,130 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 00:44:26,130 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 00:44:26,131 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 00:44:26,139 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 00:44:26,139 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-12 00:44:26,140 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-12 00:44:26,140 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-12 00:44:26,142 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-12 00:44:26,143 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-12 00:44:26,143 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-12 00:44:26,144 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-12 00:44:26,144 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-12 00:44:26,145 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-12 00:44:26,145 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-12 00:44:26,146 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-12 00:44:26,146 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-12 00:44:26,147 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 00:44:26,148 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 00:44:26,148 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 00:44:26,149 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 00:44:26,149 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 00:44:26,150 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 00:44:26,150 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 00:44:26,151 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 00:44:26,152 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 00:44:26,152 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 00:44:26,153 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 00:44:26,153 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:44:26,153 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 00:44:26,154 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 00:44:26,154 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 00:44:26,154 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-12 00:44:26,154 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 00:44:26,155 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 00:44:26,155 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-12 00:44:26,155 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 00:44:26,156 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_2b4ad39d-5e73-4b48-8020-4287181f6d4a/bin/utaipan-verify-NcY6lQBIFX/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b4ad39d-5e73-4b48-8020-4287181f6d4a/bin/utaipan-verify-NcY6lQBIFX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2e2a2cb2c4789cd68b1190dca921718c27be66a014c5b9afd684fc837ce3e158 [2023-11-12 00:44:26,434 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 00:44:26,457 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 00:44:26,460 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 00:44:26,461 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 00:44:26,462 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 00:44:26,463 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b4ad39d-5e73-4b48-8020-4287181f6d4a/bin/utaipan-verify-NcY6lQBIFX/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.krebs.1.prop1-func-interl.c [2023-11-12 00:44:29,604 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 00:44:29,968 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 00:44:29,969 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b4ad39d-5e73-4b48-8020-4287181f6d4a/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.krebs.1.prop1-func-interl.c [2023-11-12 00:44:29,990 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b4ad39d-5e73-4b48-8020-4287181f6d4a/bin/utaipan-verify-NcY6lQBIFX/data/ae5ac950b/20fff106e76441fcb2de630ec6aa4512/FLAG5b98e41f1 [2023-11-12 00:44:30,216 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b4ad39d-5e73-4b48-8020-4287181f6d4a/bin/utaipan-verify-NcY6lQBIFX/data/ae5ac950b/20fff106e76441fcb2de630ec6aa4512 [2023-11-12 00:44:30,218 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 00:44:30,220 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 00:44:30,221 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 00:44:30,221 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 00:44:30,226 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 00:44:30,227 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:44:30" (1/1) ... [2023-11-12 00:44:30,228 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27a8e9b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:44:30, skipping insertion in model container [2023-11-12 00:44:30,228 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:44:30" (1/1) ... [2023-11-12 00:44:30,313 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 00:44:30,501 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_2b4ad39d-5e73-4b48-8020-4287181f6d4a/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.krebs.1.prop1-func-interl.c[1172,1185] [2023-11-12 00:44:30,917 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:44:30,929 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 00:44:30,941 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_2b4ad39d-5e73-4b48-8020-4287181f6d4a/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.krebs.1.prop1-func-interl.c[1172,1185] [2023-11-12 00:44:31,189 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:44:31,205 INFO L206 MainTranslator]: Completed translation [2023-11-12 00:44:31,206 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:44:31 WrapperNode [2023-11-12 00:44:31,206 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 00:44:31,208 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 00:44:31,208 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 00:44:31,208 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 00:44:31,214 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:44:31" (1/1) ... [2023-11-12 00:44:31,274 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:44:31" (1/1) ... [2023-11-12 00:44:31,659 INFO L138 Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 3755 [2023-11-12 00:44:31,659 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 00:44:31,660 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 00:44:31,660 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 00:44:31,660 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 00:44:31,670 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:44:31" (1/1) ... [2023-11-12 00:44:31,670 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:44:31" (1/1) ... [2023-11-12 00:44:31,884 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:44:31" (1/1) ... [2023-11-12 00:44:31,885 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:44:31" (1/1) ... [2023-11-12 00:44:32,105 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:44:31" (1/1) ... [2023-11-12 00:44:32,152 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:44:31" (1/1) ... [2023-11-12 00:44:32,203 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:44:31" (1/1) ... [2023-11-12 00:44:32,224 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:44:31" (1/1) ... [2023-11-12 00:44:32,278 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 00:44:32,279 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 00:44:32,280 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 00:44:32,280 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 00:44:32,281 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:44:31" (1/1) ... [2023-11-12 00:44:32,288 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:44:32,319 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b4ad39d-5e73-4b48-8020-4287181f6d4a/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:44:32,337 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b4ad39d-5e73-4b48-8020-4287181f6d4a/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 00:44:32,423 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b4ad39d-5e73-4b48-8020-4287181f6d4a/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 00:44:32,442 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 00:44:32,442 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 00:44:32,443 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 00:44:32,443 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 00:44:32,827 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 00:44:32,829 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 00:44:35,913 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 00:44:42,339 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 00:44:42,339 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-12 00:44:42,343 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:44:42 BoogieIcfgContainer [2023-11-12 00:44:42,344 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 00:44:42,349 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 00:44:42,349 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 00:44:42,352 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 00:44:42,353 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 12:44:30" (1/3) ... [2023-11-12 00:44:42,353 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23a3eb1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:44:42, skipping insertion in model container [2023-11-12 00:44:42,354 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:44:31" (2/3) ... [2023-11-12 00:44:42,355 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23a3eb1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:44:42, skipping insertion in model container [2023-11-12 00:44:42,356 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:44:42" (3/3) ... [2023-11-12 00:44:42,357 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.krebs.1.prop1-func-interl.c [2023-11-12 00:44:42,379 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 00:44:42,379 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-12 00:44:42,440 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 00:44:42,449 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;@35825d2b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-12 00:44:42,449 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-12 00:44:42,454 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) [2023-11-12 00:44:42,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-11-12 00:44:42,460 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:44:42,461 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-11-12 00:44:42,462 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:44:42,469 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:44:42,470 INFO L85 PathProgramCache]: Analyzing trace with hash 142888032, now seen corresponding path program 1 times [2023-11-12 00:44:42,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:44:42,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1348086698] [2023-11-12 00:44:42,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:44:42,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:44:43,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 00:44:43,168 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-12 00:44:43,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 00:44:43,516 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-11-12 00:44:43,521 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-12 00:44:43,522 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-12 00:44:43,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-12 00:44:43,529 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-11-12 00:44:43,534 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-11-12 00:44:43,582 WARN L321 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2023-11-12 00:44:43,608 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 12:44:43 BoogieIcfgContainer [2023-11-12 00:44:43,609 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-12 00:44:43,611 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-12 00:44:43,611 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-12 00:44:43,611 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-12 00:44:43,612 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:44:42" (3/4) ... [2023-11-12 00:44:43,616 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-12 00:44:43,617 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-12 00:44:43,618 INFO L158 Benchmark]: Toolchain (without parser) took 13398.47ms. Allocated memory was 163.6MB in the beginning and 998.2MB in the end (delta: 834.7MB). Free memory was 127.2MB in the beginning and 533.4MB in the end (delta: -406.1MB). Peak memory consumption was 430.4MB. Max. memory is 16.1GB. [2023-11-12 00:44:43,619 INFO L158 Benchmark]: CDTParser took 0.34ms. Allocated memory is still 117.4MB. Free memory was 85.4MB in the beginning and 85.3MB in the end (delta: 30.7kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-12 00:44:43,621 INFO L158 Benchmark]: CACSL2BoogieTranslator took 985.75ms. Allocated memory is still 163.6MB. Free memory was 127.2MB in the beginning and 79.4MB in the end (delta: 47.9MB). Peak memory consumption was 48.2MB. Max. memory is 16.1GB. [2023-11-12 00:44:43,622 INFO L158 Benchmark]: Boogie Procedure Inliner took 451.93ms. Allocated memory is still 163.6MB. Free memory was 79.4MB in the beginning and 62.6MB in the end (delta: 16.7MB). Peak memory consumption was 45.5MB. Max. memory is 16.1GB. [2023-11-12 00:44:43,627 INFO L158 Benchmark]: Boogie Preprocessor took 618.36ms. Allocated memory is still 163.6MB. Free memory was 62.6MB in the beginning and 60.8MB in the end (delta: 1.8MB). Peak memory consumption was 46.2MB. Max. memory is 16.1GB. [2023-11-12 00:44:43,628 INFO L158 Benchmark]: RCFGBuilder took 10065.07ms. Allocated memory was 163.6MB in the beginning and 998.2MB in the end (delta: 834.7MB). Free memory was 60.8MB in the beginning and 630.8MB in the end (delta: -570.0MB). Peak memory consumption was 380.7MB. Max. memory is 16.1GB. [2023-11-12 00:44:43,629 INFO L158 Benchmark]: TraceAbstraction took 1260.15ms. Allocated memory is still 998.2MB. Free memory was 630.8MB in the beginning and 533.4MB in the end (delta: 97.5MB). Peak memory consumption was 96.5MB. Max. memory is 16.1GB. [2023-11-12 00:44:43,629 INFO L158 Benchmark]: Witness Printer took 6.47ms. Allocated memory is still 998.2MB. Free memory is still 533.4MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-12 00:44:43,638 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34ms. Allocated memory is still 117.4MB. Free memory was 85.4MB in the beginning and 85.3MB in the end (delta: 30.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 985.75ms. Allocated memory is still 163.6MB. Free memory was 127.2MB in the beginning and 79.4MB in the end (delta: 47.9MB). Peak memory consumption was 48.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 451.93ms. Allocated memory is still 163.6MB. Free memory was 79.4MB in the beginning and 62.6MB in the end (delta: 16.7MB). Peak memory consumption was 45.5MB. Max. memory is 16.1GB. * Boogie Preprocessor took 618.36ms. Allocated memory is still 163.6MB. Free memory was 62.6MB in the beginning and 60.8MB in the end (delta: 1.8MB). Peak memory consumption was 46.2MB. Max. memory is 16.1GB. * RCFGBuilder took 10065.07ms. Allocated memory was 163.6MB in the beginning and 998.2MB in the end (delta: 834.7MB). Free memory was 60.8MB in the beginning and 630.8MB in the end (delta: -570.0MB). Peak memory consumption was 380.7MB. Max. memory is 16.1GB. * TraceAbstraction took 1260.15ms. Allocated memory is still 998.2MB. Free memory was 630.8MB in the beginning and 533.4MB in the end (delta: 97.5MB). Peak memory consumption was 96.5MB. Max. memory is 16.1GB. * Witness Printer took 6.47ms. Allocated memory is still 998.2MB. Free memory is still 533.4MB. 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 165, overapproximation of bitwiseAnd at line 143. 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_59 = 0; [L41] const SORT_4 var_61 = 5; [L42] const SORT_2 var_65 = 2; [L43] const SORT_4 var_69 = 1; [L44] const SORT_2 var_75 = 4; [L45] const SORT_4 var_77 = 2; [L46] const SORT_2 var_101 = 12; [L47] const SORT_2 var_154 = 15; [L48] const SORT_2 var_169 = 10; [L50] SORT_1 input_66; [L51] SORT_1 input_76; [L52] SORT_1 input_82; [L53] SORT_1 input_106; [L54] SORT_1 input_109; [L55] SORT_1 input_110; [L56] SORT_1 input_126; [L57] SORT_1 input_145; [L58] SORT_1 input_187; [L59] SORT_1 input_208; [L61] EXPR __VERIFIER_nondet_uchar() & mask_SORT_2 [L61] SORT_2 state_6 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L62] EXPR __VERIFIER_nondet_uchar() & mask_SORT_2 [L62] SORT_2 state_8 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L63] EXPR __VERIFIER_nondet_uchar() & mask_SORT_2 [L63] SORT_2 state_10 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L64] EXPR __VERIFIER_nondet_uchar() & mask_SORT_2 [L64] SORT_2 state_12 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L65] EXPR __VERIFIER_nondet_uchar() & mask_SORT_2 [L65] SORT_2 state_14 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L66] EXPR __VERIFIER_nondet_uchar() & mask_SORT_2 [L66] SORT_2 state_16 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L67] EXPR __VERIFIER_nondet_uchar() & mask_SORT_2 [L67] SORT_2 state_18 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L68] EXPR __VERIFIER_nondet_uchar() & mask_SORT_2 [L68] SORT_2 state_20 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L69] EXPR __VERIFIER_nondet_uchar() & mask_SORT_2 [L69] SORT_2 state_22 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L70] EXPR __VERIFIER_nondet_uchar() & mask_SORT_2 [L70] SORT_2 state_24 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L71] EXPR __VERIFIER_nondet_uchar() & mask_SORT_2 [L71] SORT_2 state_26 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L72] EXPR __VERIFIER_nondet_uchar() & mask_SORT_2 [L72] SORT_2 state_28 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L73] EXPR __VERIFIER_nondet_uchar() & mask_SORT_1 [L73] SORT_1 state_31 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L74] EXPR __VERIFIER_nondet_uchar() & mask_SORT_1 [L74] SORT_1 state_33 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L75] EXPR __VERIFIER_nondet_uchar() & mask_SORT_1 [L75] SORT_1 state_35 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L76] EXPR __VERIFIER_nondet_uchar() & mask_SORT_1 [L76] SORT_1 state_37 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L77] EXPR __VERIFIER_nondet_uchar() & mask_SORT_1 [L77] SORT_1 state_39 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L78] EXPR __VERIFIER_nondet_uchar() & mask_SORT_1 [L78] SORT_1 state_41 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L79] EXPR __VERIFIER_nondet_uchar() & mask_SORT_1 [L79] SORT_1 state_43 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L80] EXPR __VERIFIER_nondet_uchar() & mask_SORT_1 [L80] SORT_1 state_45 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L81] EXPR __VERIFIER_nondet_uchar() & mask_SORT_1 [L81] SORT_1 state_47 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L82] EXPR __VERIFIER_nondet_uchar() & mask_SORT_1 [L82] SORT_1 state_49 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L83] EXPR __VERIFIER_nondet_uchar() & mask_SORT_1 [L83] SORT_1 state_51 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L84] EXPR __VERIFIER_nondet_uchar() & mask_SORT_1 [L84] SORT_1 state_53 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L85] EXPR __VERIFIER_nondet_uchar() & mask_SORT_1 [L85] SORT_1 state_55 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L86] EXPR __VERIFIER_nondet_uchar() & mask_SORT_1 [L86] SORT_1 state_57 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L88] SORT_2 init_7_arg_1 = var_5; [L89] state_6 = init_7_arg_1 [L90] SORT_2 init_9_arg_1 = var_5; [L91] state_8 = init_9_arg_1 [L92] SORT_2 init_11_arg_1 = var_5; [L93] state_10 = init_11_arg_1 [L94] SORT_2 init_13_arg_1 = var_5; [L95] state_12 = init_13_arg_1 [L96] SORT_2 init_15_arg_1 = var_5; [L97] state_14 = init_15_arg_1 [L98] SORT_2 init_17_arg_1 = var_5; [L99] state_16 = init_17_arg_1 [L100] SORT_2 init_19_arg_1 = var_5; [L101] state_18 = init_19_arg_1 [L102] SORT_2 init_21_arg_1 = var_5; [L103] state_20 = init_21_arg_1 [L104] SORT_2 init_23_arg_1 = var_5; [L105] state_22 = init_23_arg_1 [L106] SORT_2 init_25_arg_1 = var_5; [L107] state_24 = init_25_arg_1 [L108] SORT_2 init_27_arg_1 = var_5; [L109] state_26 = init_27_arg_1 [L110] SORT_2 init_29_arg_1 = var_5; [L111] state_28 = init_29_arg_1 [L112] SORT_1 init_32_arg_1 = var_30; [L113] state_31 = init_32_arg_1 [L114] SORT_1 init_34_arg_1 = var_30; [L115] state_33 = init_34_arg_1 [L116] SORT_1 init_36_arg_1 = var_30; [L117] state_35 = init_36_arg_1 [L118] SORT_1 init_38_arg_1 = var_30; [L119] state_37 = init_38_arg_1 [L120] SORT_1 init_40_arg_1 = var_30; [L121] state_39 = init_40_arg_1 [L122] SORT_1 init_42_arg_1 = var_30; [L123] state_41 = init_42_arg_1 [L124] SORT_1 init_44_arg_1 = var_30; [L125] state_43 = init_44_arg_1 [L126] SORT_1 init_46_arg_1 = var_30; [L127] state_45 = init_46_arg_1 [L128] SORT_1 init_48_arg_1 = var_30; [L129] state_47 = init_48_arg_1 [L130] SORT_1 init_50_arg_1 = var_30; [L131] state_49 = init_50_arg_1 [L132] SORT_1 init_52_arg_1 = var_30; [L133] state_51 = init_52_arg_1 [L134] SORT_1 init_54_arg_1 = var_30; [L135] state_53 = init_54_arg_1 [L136] SORT_1 init_56_arg_1 = var_30; [L137] state_55 = init_56_arg_1 [L138] SORT_1 init_58_arg_1 = var_30; [L139] state_57 = init_58_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_7_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_6=0, state_8=0, var_101=12, var_154=15, var_169=10, var_30=0, var_59=0, var_5=0, var_61=5, var_65=2, var_69=1, var_75=4, var_77=2] [L142] input_66 = __VERIFIER_nondet_uchar() [L143] EXPR input_66 & mask_SORT_1 [L143] input_66 = input_66 & mask_SORT_1 [L144] input_76 = __VERIFIER_nondet_uchar() [L145] EXPR input_76 & mask_SORT_1 [L145] input_76 = input_76 & mask_SORT_1 [L146] input_82 = __VERIFIER_nondet_uchar() [L147] EXPR input_82 & mask_SORT_1 [L147] input_82 = input_82 & mask_SORT_1 [L148] input_106 = __VERIFIER_nondet_uchar() [L149] EXPR input_106 & mask_SORT_1 [L149] input_106 = input_106 & mask_SORT_1 [L150] input_109 = __VERIFIER_nondet_uchar() [L151] EXPR input_109 & mask_SORT_1 [L151] input_109 = input_109 & mask_SORT_1 [L152] input_110 = __VERIFIER_nondet_uchar() [L153] EXPR input_110 & mask_SORT_1 [L153] input_110 = input_110 & mask_SORT_1 [L154] input_126 = __VERIFIER_nondet_uchar() [L155] EXPR input_126 & mask_SORT_1 [L155] input_126 = input_126 & mask_SORT_1 [L156] input_145 = __VERIFIER_nondet_uchar() [L157] EXPR input_145 & mask_SORT_1 [L157] input_145 = input_145 & mask_SORT_1 [L158] input_187 = __VERIFIER_nondet_uchar() [L159] EXPR input_187 & mask_SORT_1 [L159] input_187 = input_187 & mask_SORT_1 [L160] input_208 = __VERIFIER_nondet_uchar() [L163] SORT_3 var_60_arg_0 = var_59; [L164] SORT_2 var_60_arg_1 = state_28; [L165] EXPR ((SORT_4)var_60_arg_0 << 8) | var_60_arg_1 [L165] SORT_4 var_60 = ((SORT_4)var_60_arg_0 << 8) | var_60_arg_1; [L166] EXPR var_60 & mask_SORT_4 [L166] var_60 = var_60 & mask_SORT_4 [L167] SORT_4 var_62_arg_0 = var_60; [L168] SORT_4 var_62_arg_1 = var_61; [L169] SORT_1 var_62 = var_62_arg_0 <= var_62_arg_1; [L170] SORT_1 var_63_arg_0 = ~state_57; [L171] EXPR var_63_arg_0 & mask_SORT_1 [L171] var_63_arg_0 = var_63_arg_0 & mask_SORT_1 [L172] SORT_1 var_63_arg_1 = ~var_62; [L173] EXPR var_63_arg_1 & mask_SORT_1 [L173] var_63_arg_1 = var_63_arg_1 & mask_SORT_1 [L174] EXPR var_63_arg_0 & var_63_arg_1 [L174] SORT_1 var_63 = var_63_arg_0 & var_63_arg_1; [L175] EXPR var_63 & mask_SORT_1 [L175] var_63 = var_63 & mask_SORT_1 [L176] SORT_1 bad_64_arg_0 = var_63; [L177] CALL __VERIFIER_assert(!(bad_64_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: 1.1s, 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, 0.5s 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 [2023-11-12 00:44:43,674 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b4ad39d-5e73-4b48-8020-4287181f6d4a/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b4ad39d-5e73-4b48-8020-4287181f6d4a/bin/utaipan-verify-NcY6lQBIFX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b4ad39d-5e73-4b48-8020-4287181f6d4a/bin/utaipan-verify-NcY6lQBIFX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b4ad39d-5e73-4b48-8020-4287181f6d4a/bin/utaipan-verify-NcY6lQBIFX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b4ad39d-5e73-4b48-8020-4287181f6d4a/bin/utaipan-verify-NcY6lQBIFX/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.krebs.1.prop1-func-interl.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b4ad39d-5e73-4b48-8020-4287181f6d4a/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b4ad39d-5e73-4b48-8020-4287181f6d4a/bin/utaipan-verify-NcY6lQBIFX --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 2e2a2cb2c4789cd68b1190dca921718c27be66a014c5b9afd684fc837ce3e158 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 00:44:46,417 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 00:44:46,565 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b4ad39d-5e73-4b48-8020-4287181f6d4a/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2023-11-12 00:44:46,574 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 00:44:46,575 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 00:44:46,622 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 00:44:46,622 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 00:44:46,623 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 00:44:46,624 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 00:44:46,629 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 00:44:46,629 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-12 00:44:46,630 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-12 00:44:46,630 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-12 00:44:46,632 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-12 00:44:46,633 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-12 00:44:46,633 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-12 00:44:46,634 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 00:44:46,635 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 00:44:46,635 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 00:44:46,636 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 00:44:46,637 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 00:44:46,637 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 00:44:46,638 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-12 00:44:46,638 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-12 00:44:46,639 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-12 00:44:46,639 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 00:44:46,640 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 00:44:46,640 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 00:44:46,640 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-12 00:44:46,641 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 00:44:46,642 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:44:46,643 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 00:44:46,643 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 00:44:46,643 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 00:44:46,644 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-11-12 00:44:46,644 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-12 00:44:46,644 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 00:44:46,644 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-12 00:44:46,645 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 00:44:46,646 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_2b4ad39d-5e73-4b48-8020-4287181f6d4a/bin/utaipan-verify-NcY6lQBIFX/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b4ad39d-5e73-4b48-8020-4287181f6d4a/bin/utaipan-verify-NcY6lQBIFX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2e2a2cb2c4789cd68b1190dca921718c27be66a014c5b9afd684fc837ce3e158 [2023-11-12 00:44:47,099 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 00:44:47,127 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 00:44:47,130 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 00:44:47,131 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 00:44:47,132 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 00:44:47,133 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b4ad39d-5e73-4b48-8020-4287181f6d4a/bin/utaipan-verify-NcY6lQBIFX/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.krebs.1.prop1-func-interl.c [2023-11-12 00:44:50,252 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 00:44:50,691 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 00:44:50,692 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b4ad39d-5e73-4b48-8020-4287181f6d4a/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.krebs.1.prop1-func-interl.c [2023-11-12 00:44:50,729 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b4ad39d-5e73-4b48-8020-4287181f6d4a/bin/utaipan-verify-NcY6lQBIFX/data/23cda75ef/5eebabe3cfc74ffdbe0391ff97488751/FLAGb2a8bce1b [2023-11-12 00:44:50,755 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b4ad39d-5e73-4b48-8020-4287181f6d4a/bin/utaipan-verify-NcY6lQBIFX/data/23cda75ef/5eebabe3cfc74ffdbe0391ff97488751 [2023-11-12 00:44:50,762 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 00:44:50,763 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 00:44:50,766 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 00:44:50,767 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 00:44:50,772 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 00:44:50,773 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:44:50" (1/1) ... [2023-11-12 00:44:50,774 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1666f20a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:44:50, skipping insertion in model container [2023-11-12 00:44:50,775 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:44:50" (1/1) ... [2023-11-12 00:44:50,848 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 00:44:51,077 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_2b4ad39d-5e73-4b48-8020-4287181f6d4a/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.krebs.1.prop1-func-interl.c[1172,1185] [2023-11-12 00:44:51,354 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:44:51,378 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 00:44:51,390 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_2b4ad39d-5e73-4b48-8020-4287181f6d4a/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.krebs.1.prop1-func-interl.c[1172,1185] [2023-11-12 00:44:51,583 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:44:51,599 INFO L206 MainTranslator]: Completed translation [2023-11-12 00:44:51,600 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:44:51 WrapperNode [2023-11-12 00:44:51,600 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 00:44:51,601 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 00:44:51,601 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 00:44:51,602 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 00:44:51,615 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:44:51" (1/1) ... [2023-11-12 00:44:51,677 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:44:51" (1/1) ... [2023-11-12 00:44:51,769 INFO L138 Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1118 [2023-11-12 00:44:51,769 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 00:44:51,770 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 00:44:51,770 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 00:44:51,770 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 00:44:51,785 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:44:51" (1/1) ... [2023-11-12 00:44:51,785 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:44:51" (1/1) ... [2023-11-12 00:44:51,795 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:44:51" (1/1) ... [2023-11-12 00:44:51,795 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:44:51" (1/1) ... [2023-11-12 00:44:51,838 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:44:51" (1/1) ... [2023-11-12 00:44:51,844 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:44:51" (1/1) ... [2023-11-12 00:44:51,866 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:44:51" (1/1) ... [2023-11-12 00:44:51,888 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:44:51" (1/1) ... [2023-11-12 00:44:51,899 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 00:44:51,899 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 00:44:51,900 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 00:44:51,900 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 00:44:51,901 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:44:51" (1/1) ... [2023-11-12 00:44:51,908 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:44:51,919 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b4ad39d-5e73-4b48-8020-4287181f6d4a/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:44:51,934 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b4ad39d-5e73-4b48-8020-4287181f6d4a/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 00:44:51,964 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b4ad39d-5e73-4b48-8020-4287181f6d4a/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 00:44:51,990 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 00:44:51,991 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-12 00:44:51,991 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 00:44:51,991 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 00:44:52,322 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 00:44:52,324 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 00:44:54,271 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 00:44:54,277 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 00:44:54,277 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-12 00:44:54,279 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:44:54 BoogieIcfgContainer [2023-11-12 00:44:54,280 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 00:44:54,282 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 00:44:54,282 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 00:44:54,287 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 00:44:54,288 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 12:44:50" (1/3) ... [2023-11-12 00:44:54,289 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e186c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:44:54, skipping insertion in model container [2023-11-12 00:44:54,290 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:44:51" (2/3) ... [2023-11-12 00:44:54,291 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e186c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:44:54, skipping insertion in model container [2023-11-12 00:44:54,291 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:44:54" (3/3) ... [2023-11-12 00:44:54,293 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.krebs.1.prop1-func-interl.c [2023-11-12 00:44:54,313 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 00:44:54,314 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-12 00:44:54,376 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 00:44:54,383 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;@1f7d92f9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-12 00:44:54,384 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-12 00:44:54,389 INFO L276 IsEmpty]: Start isEmpty. Operand has 11 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 states have internal predecessors, (13), 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) [2023-11-12 00:44:54,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-12 00:44:54,397 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:44:54,397 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-12 00:44:54,398 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:44:54,405 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:44:54,406 INFO L85 PathProgramCache]: Analyzing trace with hash 28698761, now seen corresponding path program 1 times [2023-11-12 00:44:54,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-12 00:44:54,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1846172640] [2023-11-12 00:44:54,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:44:54,423 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-12 00:44:54,423 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b4ad39d-5e73-4b48-8020-4287181f6d4a/bin/utaipan-verify-NcY6lQBIFX/mathsat [2023-11-12 00:44:54,432 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b4ad39d-5e73-4b48-8020-4287181f6d4a/bin/utaipan-verify-NcY6lQBIFX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-12 00:44:54,467 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b4ad39d-5e73-4b48-8020-4287181f6d4a/bin/utaipan-verify-NcY6lQBIFX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-11-12 00:44:54,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:44:54,757 INFO L262 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 18 conjunts are in the unsatisfiable core [2023-11-12 00:44:54,768 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:44:55,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:44:55,052 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 00:44:55,052 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-12 00:44:55,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1846172640] [2023-11-12 00:44:55,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1846172640] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:44:55,054 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:44:55,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 00:44:55,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689076883] [2023-11-12 00:44:55,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:44:55,064 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 00:44:55,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-12 00:44:55,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 00:44:55,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 00:44:55,106 INFO L87 Difference]: Start difference. First operand has 11 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 states have internal predecessors, (13), 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 1.25) internal successors, (5), 4 states have internal predecessors, (5), 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) [2023-11-12 00:44:55,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:44:55,382 INFO L93 Difference]: Finished difference Result 19 states and 27 transitions. [2023-11-12 00:44:55,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 00:44:55,385 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 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 5 [2023-11-12 00:44:55,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:44:55,394 INFO L225 Difference]: With dead ends: 19 [2023-11-12 00:44:55,394 INFO L226 Difference]: Without dead ends: 10 [2023-11-12 00:44:55,397 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-12 00:44:55,401 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 3 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-12 00:44:55,403 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 11 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-12 00:44:55,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2023-11-12 00:44:55,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 9. [2023-11-12 00:44:55,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 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) [2023-11-12 00:44:55,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2023-11-12 00:44:55,439 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 5 [2023-11-12 00:44:55,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:44:55,439 INFO L495 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2023-11-12 00:44:55,440 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 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) [2023-11-12 00:44:55,440 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2023-11-12 00:44:55,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-12 00:44:55,441 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:44:55,441 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2023-11-12 00:44:55,461 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b4ad39d-5e73-4b48-8020-4287181f6d4a/bin/utaipan-verify-NcY6lQBIFX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-11-12 00:44:55,653 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b4ad39d-5e73-4b48-8020-4287181f6d4a/bin/utaipan-verify-NcY6lQBIFX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-12 00:44:55,654 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:44:55,654 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:44:55,654 INFO L85 PathProgramCache]: Analyzing trace with hash 271073635, now seen corresponding path program 1 times [2023-11-12 00:44:55,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-12 00:44:55,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1670261549] [2023-11-12 00:44:55,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:44:55,657 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-12 00:44:55,658 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b4ad39d-5e73-4b48-8020-4287181f6d4a/bin/utaipan-verify-NcY6lQBIFX/mathsat [2023-11-12 00:44:55,659 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b4ad39d-5e73-4b48-8020-4287181f6d4a/bin/utaipan-verify-NcY6lQBIFX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-12 00:44:55,711 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b4ad39d-5e73-4b48-8020-4287181f6d4a/bin/utaipan-verify-NcY6lQBIFX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-11-12 00:44:56,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:44:56,564 INFO L262 TraceCheckSpWp]: Trace formula consists of 949 conjuncts, 31 conjunts are in the unsatisfiable core [2023-11-12 00:44:56,575 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:44:57,024 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:44:57,024 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 00:44:57,810 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:44:57,811 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-12 00:44:57,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1670261549] [2023-11-12 00:44:57,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1670261549] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 00:44:57,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [41040290] [2023-11-12 00:44:57,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:44:57,812 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-12 00:44:57,812 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b4ad39d-5e73-4b48-8020-4287181f6d4a/bin/utaipan-verify-NcY6lQBIFX/cvc4 [2023-11-12 00:44:57,816 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b4ad39d-5e73-4b48-8020-4287181f6d4a/bin/utaipan-verify-NcY6lQBIFX/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-12 00:44:57,848 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b4ad39d-5e73-4b48-8020-4287181f6d4a/bin/utaipan-verify-NcY6lQBIFX/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2023-11-12 00:44:58,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:44:58,878 INFO L262 TraceCheckSpWp]: Trace formula consists of 949 conjuncts, 31 conjunts are in the unsatisfiable core [2023-11-12 00:44:58,891 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:44:59,186 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:44:59,187 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 00:45:03,312 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:45:03,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [41040290] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 00:45:03,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1496716740] [2023-11-12 00:45:03,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:45:03,314 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:45:03,314 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b4ad39d-5e73-4b48-8020-4287181f6d4a/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:45:03,328 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b4ad39d-5e73-4b48-8020-4287181f6d4a/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 00:45:03,352 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b4ad39d-5e73-4b48-8020-4287181f6d4a/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-12 00:45:03,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:45:03,898 INFO L262 TraceCheckSpWp]: Trace formula consists of 949 conjuncts, 34 conjunts are in the unsatisfiable core [2023-11-12 00:45:03,910 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:45:04,312 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:45:04,313 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 00:45:07,304 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:45:07,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1496716740] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 00:45:07,305 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2023-11-12 00:45:07,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6, 6, 7, 7] total 13 [2023-11-12 00:45:07,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514388987] [2023-11-12 00:45:07,307 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2023-11-12 00:45:07,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-12 00:45:07,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-12 00:45:07,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-12 00:45:07,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=106, Unknown=1, NotChecked=0, Total=156 [2023-11-12 00:45:07,312 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand has 13 states, 13 states have (on average 1.5384615384615385) internal successors, (20), 13 states have internal predecessors, (20), 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) [2023-11-12 00:45:11,900 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0, 1] [2023-11-12 00:45:13,964 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0, 1] [2023-11-12 00:45:15,593 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.41s for a HTC check with result INVALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-11-12 00:45:16,848 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-11-12 00:45:17,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:45:17,721 INFO L93 Difference]: Finished difference Result 18 states and 19 transitions. [2023-11-12 00:45:17,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-12 00:45:17,722 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.5384615384615385) internal successors, (20), 13 states have internal predecessors, (20), 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 8 [2023-11-12 00:45:17,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:45:17,723 INFO L225 Difference]: With dead ends: 18 [2023-11-12 00:45:17,723 INFO L226 Difference]: Without dead ends: 16 [2023-11-12 00:45:17,724 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 28 SyntacticMatches, 3 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 9.6s TimeCoverageRelationStatistics Valid=91, Invalid=179, Unknown=2, NotChecked=0, Total=272 [2023-11-12 00:45:17,725 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 11 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 6 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.9s IncrementalHoareTripleChecker+Time [2023-11-12 00:45:17,726 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 24 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 33 Invalid, 2 Unknown, 0 Unchecked, 7.9s Time] [2023-11-12 00:45:17,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2023-11-12 00:45:17,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 15. [2023-11-12 00:45:17,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.0714285714285714) internal successors, (15), 14 states have internal predecessors, (15), 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) [2023-11-12 00:45:17,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2023-11-12 00:45:17,733 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 8 [2023-11-12 00:45:17,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:45:17,734 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2023-11-12 00:45:17,734 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.5384615384615385) internal successors, (20), 13 states have internal predecessors, (20), 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) [2023-11-12 00:45:17,734 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2023-11-12 00:45:17,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-11-12 00:45:17,735 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:45:17,735 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1] [2023-11-12 00:45:17,753 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b4ad39d-5e73-4b48-8020-4287181f6d4a/bin/utaipan-verify-NcY6lQBIFX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-11-12 00:45:17,958 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b4ad39d-5e73-4b48-8020-4287181f6d4a/bin/utaipan-verify-NcY6lQBIFX/cvc4 --incremental --print-success --lang smt (4)] Forceful destruction successful, exit code 0 [2023-11-12 00:45:18,161 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b4ad39d-5e73-4b48-8020-4287181f6d4a/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-12 00:45:18,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b4ad39d-5e73-4b48-8020-4287181f6d4a/bin/utaipan-verify-NcY6lQBIFX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b4ad39d-5e73-4b48-8020-4287181f6d4a/bin/utaipan-verify-NcY6lQBIFX/cvc4 --incremental --print-success --lang smt,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b4ad39d-5e73-4b48-8020-4287181f6d4a/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:45:18,353 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:45:18,353 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:45:18,353 INFO L85 PathProgramCache]: Analyzing trace with hash 1580781475, now seen corresponding path program 2 times [2023-11-12 00:45:18,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-12 00:45:18,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2105003463] [2023-11-12 00:45:18,360 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-12 00:45:18,360 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-12 00:45:18,360 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b4ad39d-5e73-4b48-8020-4287181f6d4a/bin/utaipan-verify-NcY6lQBIFX/mathsat [2023-11-12 00:45:18,361 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b4ad39d-5e73-4b48-8020-4287181f6d4a/bin/utaipan-verify-NcY6lQBIFX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-12 00:45:18,376 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b4ad39d-5e73-4b48-8020-4287181f6d4a/bin/utaipan-verify-NcY6lQBIFX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process