./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.safe_analog_estimation_convergence.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 30e01a73 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e099013-c001-4854-8216-1e01ba53c2d6/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e099013-c001-4854-8216-1e01ba53c2d6/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_7e099013-c001-4854-8216-1e01ba53c2d6/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e099013-c001-4854-8216-1e01ba53c2d6/bin/utaipan-verify-mE87zJ7Ire/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.safe_analog_estimation_convergence.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e099013-c001-4854-8216-1e01ba53c2d6/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_7e099013-c001-4854-8216-1e01ba53c2d6/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 2e2d16516f5b2c0cf17cd8ea179f437d06662e733ae19757c10d87ee0ea2bd8e --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 21:15:29,864 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 21:15:29,944 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e099013-c001-4854-8216-1e01ba53c2d6/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-11-23 21:15:29,951 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 21:15:29,952 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 21:15:29,985 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 21:15:29,986 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 21:15:29,988 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 21:15:29,989 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 21:15:29,991 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 21:15:29,992 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-23 21:15:29,993 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-23 21:15:29,994 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-23 21:15:29,997 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-23 21:15:29,997 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-23 21:15:29,998 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-23 21:15:29,999 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-23 21:15:30,007 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-23 21:15:30,007 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-23 21:15:30,008 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-23 21:15:30,009 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-23 21:15:30,009 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-23 21:15:30,010 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 21:15:30,011 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 21:15:30,011 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 21:15:30,012 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 21:15:30,013 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 21:15:30,014 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 21:15:30,015 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 21:15:30,015 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 21:15:30,016 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 21:15:30,018 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 21:15:30,018 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 21:15:30,018 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 21:15:30,019 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:15:30,019 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 21:15:30,019 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 21:15:30,020 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 21:15:30,020 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-23 21:15:30,035 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 21:15:30,035 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 21:15:30,036 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 21:15:30,037 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-23 21:15:30,037 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 21:15:30,038 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_7e099013-c001-4854-8216-1e01ba53c2d6/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e099013-c001-4854-8216-1e01ba53c2d6/bin/utaipan-verify-mE87zJ7Ire Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2e2d16516f5b2c0cf17cd8ea179f437d06662e733ae19757c10d87ee0ea2bd8e [2023-11-23 21:15:30,419 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 21:15:30,464 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 21:15:30,467 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 21:15:30,469 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 21:15:30,470 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 21:15:30,472 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e099013-c001-4854-8216-1e01ba53c2d6/bin/utaipan-verify-mE87zJ7Ire/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.safe_analog_estimation_convergence.c [2023-11-23 21:15:33,989 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 21:15:34,359 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 21:15:34,360 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e099013-c001-4854-8216-1e01ba53c2d6/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.safe_analog_estimation_convergence.c [2023-11-23 21:15:34,376 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e099013-c001-4854-8216-1e01ba53c2d6/bin/utaipan-verify-mE87zJ7Ire/data/c61a9a665/0327a965c05645ccadb3104f7740a643/FLAG7aaee61dc [2023-11-23 21:15:34,395 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e099013-c001-4854-8216-1e01ba53c2d6/bin/utaipan-verify-mE87zJ7Ire/data/c61a9a665/0327a965c05645ccadb3104f7740a643 [2023-11-23 21:15:34,399 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 21:15:34,401 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 21:15:34,403 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 21:15:34,403 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 21:15:34,425 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 21:15:34,426 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:15:34" (1/1) ... [2023-11-23 21:15:34,427 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@148733e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:15:34, skipping insertion in model container [2023-11-23 21:15:34,428 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:15:34" (1/1) ... [2023-11-23 21:15:34,502 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 21:15:34,709 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_7e099013-c001-4854-8216-1e01ba53c2d6/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.safe_analog_estimation_convergence.c[1287,1300] [2023-11-23 21:15:34,941 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:15:34,962 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 21:15:34,978 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_7e099013-c001-4854-8216-1e01ba53c2d6/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.safe_analog_estimation_convergence.c[1287,1300] [2023-11-23 21:15:35,134 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:15:35,164 INFO L206 MainTranslator]: Completed translation [2023-11-23 21:15:35,166 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:15:35 WrapperNode [2023-11-23 21:15:35,167 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 21:15:35,168 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 21:15:35,169 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 21:15:35,169 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 21:15:35,178 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:15:35" (1/1) ... [2023-11-23 21:15:35,229 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:15:35" (1/1) ... [2023-11-23 21:15:35,460 INFO L138 Inliner]: procedures = 17, calls = 10, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1198 [2023-11-23 21:15:35,461 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 21:15:35,462 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 21:15:35,462 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 21:15:35,462 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 21:15:35,474 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:15:35" (1/1) ... [2023-11-23 21:15:35,474 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:15:35" (1/1) ... [2023-11-23 21:15:35,510 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:15:35" (1/1) ... [2023-11-23 21:15:35,513 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:15:35" (1/1) ... [2023-11-23 21:15:35,583 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:15:35" (1/1) ... [2023-11-23 21:15:35,607 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:15:35" (1/1) ... [2023-11-23 21:15:35,631 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:15:35" (1/1) ... [2023-11-23 21:15:35,658 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:15:35" (1/1) ... [2023-11-23 21:15:35,674 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 21:15:35,675 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 21:15:35,675 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 21:15:35,675 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 21:15:35,677 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:15:35" (1/1) ... [2023-11-23 21:15:35,684 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:15:35,699 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e099013-c001-4854-8216-1e01ba53c2d6/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:15:35,715 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e099013-c001-4854-8216-1e01ba53c2d6/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 21:15:35,747 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e099013-c001-4854-8216-1e01ba53c2d6/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 21:15:35,774 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 21:15:35,774 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-23 21:15:35,774 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-23 21:15:35,774 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 21:15:35,775 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 21:15:35,775 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 21:15:35,979 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 21:15:35,982 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 21:15:37,754 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 21:15:40,380 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 21:15:40,381 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-23 21:15:40,383 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:15:40 BoogieIcfgContainer [2023-11-23 21:15:40,383 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 21:15:40,389 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 21:15:40,389 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 21:15:40,393 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 21:15:40,393 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 09:15:34" (1/3) ... [2023-11-23 21:15:40,395 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ae4122d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:15:40, skipping insertion in model container [2023-11-23 21:15:40,395 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:15:35" (2/3) ... [2023-11-23 21:15:40,397 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ae4122d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:15:40, skipping insertion in model container [2023-11-23 21:15:40,399 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:15:40" (3/3) ... [2023-11-23 21:15:40,400 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.safe_analog_estimation_convergence.c [2023-11-23 21:15:40,427 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 21:15:40,427 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 21:15:40,501 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 21:15:40,511 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;@34aa2879, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 21:15:40,512 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 21:15:40,519 INFO L276 IsEmpty]: Start isEmpty. Operand has 13 states, 8 states have (on average 1.375) internal successors, (11), 9 states have internal predecessors, (11), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-23 21:15:40,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-23 21:15:40,532 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:15:40,533 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:15:40,534 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:15:40,543 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:15:40,543 INFO L85 PathProgramCache]: Analyzing trace with hash 212242391, now seen corresponding path program 1 times [2023-11-23 21:15:40,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:15:40,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [724061418] [2023-11-23 21:15:40,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:15:40,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:15:50,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 21:15:50,092 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-23 21:15:53,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 21:15:53,425 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-11-23 21:15:53,430 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-23 21:15:53,432 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-23 21:15:53,435 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 21:15:53,441 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-11-23 21:15:53,454 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-23 21:15:53,571 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2023-11-23 21:15:53,603 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 09:15:53 BoogieIcfgContainer [2023-11-23 21:15:53,603 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-23 21:15:53,604 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-23 21:15:53,604 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-23 21:15:53,605 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-23 21:15:53,605 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:15:40" (3/4) ... [2023-11-23 21:15:53,609 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-23 21:15:53,610 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-23 21:15:53,612 INFO L158 Benchmark]: Toolchain (without parser) took 19211.27ms. Allocated memory was 127.9MB in the beginning and 629.1MB in the end (delta: 501.2MB). Free memory was 83.5MB in the beginning and 531.6MB in the end (delta: -448.1MB). Peak memory consumption was 54.6MB. Max. memory is 16.1GB. [2023-11-23 21:15:53,613 INFO L158 Benchmark]: CDTParser took 1.55ms. Allocated memory is still 127.9MB. Free memory is still 98.4MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 21:15:53,614 INFO L158 Benchmark]: CACSL2BoogieTranslator took 764.86ms. Allocated memory is still 127.9MB. Free memory was 83.5MB in the beginning and 58.2MB in the end (delta: 25.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2023-11-23 21:15:53,615 INFO L158 Benchmark]: Boogie Procedure Inliner took 292.71ms. Allocated memory was 127.9MB in the beginning and 190.8MB in the end (delta: 62.9MB). Free memory was 58.2MB in the beginning and 148.6MB in the end (delta: -90.3MB). Peak memory consumption was 24.5MB. Max. memory is 16.1GB. [2023-11-23 21:15:53,616 INFO L158 Benchmark]: Boogie Preprocessor took 212.20ms. Allocated memory is still 190.8MB. Free memory was 148.6MB in the beginning and 141.3MB in the end (delta: 7.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2023-11-23 21:15:53,617 INFO L158 Benchmark]: RCFGBuilder took 4708.70ms. Allocated memory was 190.8MB in the beginning and 253.8MB in the end (delta: 62.9MB). Free memory was 141.3MB in the beginning and 174.2MB in the end (delta: -32.9MB). Peak memory consumption was 152.6MB. Max. memory is 16.1GB. [2023-11-23 21:15:53,620 INFO L158 Benchmark]: TraceAbstraction took 13214.75ms. Allocated memory was 253.8MB in the beginning and 629.1MB in the end (delta: 375.4MB). Free memory was 173.1MB in the beginning and 531.6MB in the end (delta: -358.5MB). Peak memory consumption was 293.3MB. Max. memory is 16.1GB. [2023-11-23 21:15:53,623 INFO L158 Benchmark]: Witness Printer took 6.80ms. Allocated memory is still 629.1MB. Free memory is still 531.6MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 21:15:53,633 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.55ms. Allocated memory is still 127.9MB. Free memory is still 98.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 764.86ms. Allocated memory is still 127.9MB. Free memory was 83.5MB in the beginning and 58.2MB in the end (delta: 25.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 292.71ms. Allocated memory was 127.9MB in the beginning and 190.8MB in the end (delta: 62.9MB). Free memory was 58.2MB in the beginning and 148.6MB in the end (delta: -90.3MB). Peak memory consumption was 24.5MB. Max. memory is 16.1GB. * Boogie Preprocessor took 212.20ms. Allocated memory is still 190.8MB. Free memory was 148.6MB in the beginning and 141.3MB in the end (delta: 7.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * RCFGBuilder took 4708.70ms. Allocated memory was 190.8MB in the beginning and 253.8MB in the end (delta: 62.9MB). Free memory was 141.3MB in the beginning and 174.2MB in the end (delta: -32.9MB). Peak memory consumption was 152.6MB. Max. memory is 16.1GB. * TraceAbstraction took 13214.75ms. Allocated memory was 253.8MB in the beginning and 629.1MB in the end (delta: 375.4MB). Free memory was 173.1MB in the beginning and 531.6MB in the end (delta: -358.5MB). Peak memory consumption was 293.3MB. Max. memory is 16.1GB. * Witness Printer took 6.80ms. Allocated memory is still 629.1MB. Free memory is still 531.6MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 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 181, overapproximation of bitwiseAnd at line 169. 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_9 mask_SORT_9 = (SORT_9)-1 >> (sizeof(SORT_9) * 8 - 31); [L30] const SORT_9 msb_SORT_9 = (SORT_9)1 << (31 - 1); [L32] const SORT_11 mask_SORT_11 = (SORT_11)-1 >> (sizeof(SORT_11) * 8 - 16); [L33] const SORT_11 msb_SORT_11 = (SORT_11)1 << (16 - 1); [L35] const SORT_12 mask_SORT_12 = (SORT_12)-1 >> (sizeof(SORT_12) * 8 - 8); [L36] const SORT_12 msb_SORT_12 = (SORT_12)1 << (8 - 1); [L38] const SORT_20 mask_SORT_20 = (SORT_20)-1 >> (sizeof(SORT_20) * 8 - 32); [L39] const SORT_20 msb_SORT_20 = (SORT_20)1 << (32 - 1); [L41] const SORT_23 mask_SORT_23 = (SORT_23)-1 >> (sizeof(SORT_23) * 8 - 17); [L42] const SORT_23 msb_SORT_23 = (SORT_23)1 << (17 - 1); [L44] const SORT_26 mask_SORT_26 = (SORT_26)-1 >> (sizeof(SORT_26) * 8 - 18); [L45] const SORT_26 msb_SORT_26 = (SORT_26)1 << (18 - 1); [L47] const SORT_29 mask_SORT_29 = (SORT_29)-1 >> (sizeof(SORT_29) * 8 - 19); [L48] const SORT_29 msb_SORT_29 = (SORT_29)1 << (19 - 1); [L50] const SORT_32 mask_SORT_32 = (SORT_32)-1 >> (sizeof(SORT_32) * 8 - 20); [L51] const SORT_32 msb_SORT_32 = (SORT_32)1 << (20 - 1); [L53] const SORT_35 mask_SORT_35 = (SORT_35)-1 >> (sizeof(SORT_35) * 8 - 21); [L54] const SORT_35 msb_SORT_35 = (SORT_35)1 << (21 - 1); [L56] const SORT_38 mask_SORT_38 = (SORT_38)-1 >> (sizeof(SORT_38) * 8 - 22); [L57] const SORT_38 msb_SORT_38 = (SORT_38)1 << (22 - 1); [L59] const SORT_41 mask_SORT_41 = (SORT_41)-1 >> (sizeof(SORT_41) * 8 - 23); [L60] const SORT_41 msb_SORT_41 = (SORT_41)1 << (23 - 1); [L62] const SORT_44 mask_SORT_44 = (SORT_44)-1 >> (sizeof(SORT_44) * 8 - 24); [L63] const SORT_44 msb_SORT_44 = (SORT_44)1 << (24 - 1); [L65] const SORT_47 mask_SORT_47 = (SORT_47)-1 >> (sizeof(SORT_47) * 8 - 25); [L66] const SORT_47 msb_SORT_47 = (SORT_47)1 << (25 - 1); [L68] const SORT_50 mask_SORT_50 = (SORT_50)-1 >> (sizeof(SORT_50) * 8 - 26); [L69] const SORT_50 msb_SORT_50 = (SORT_50)1 << (26 - 1); [L71] const SORT_53 mask_SORT_53 = (SORT_53)-1 >> (sizeof(SORT_53) * 8 - 27); [L72] const SORT_53 msb_SORT_53 = (SORT_53)1 << (27 - 1); [L74] const SORT_56 mask_SORT_56 = (SORT_56)-1 >> (sizeof(SORT_56) * 8 - 28); [L75] const SORT_56 msb_SORT_56 = (SORT_56)1 << (28 - 1); [L77] const SORT_59 mask_SORT_59 = (SORT_59)-1 >> (sizeof(SORT_59) * 8 - 29); [L78] const SORT_59 msb_SORT_59 = (SORT_59)1 << (29 - 1); [L80] const SORT_62 mask_SORT_62 = (SORT_62)-1 >> (sizeof(SORT_62) * 8 - 30); [L81] const SORT_62 msb_SORT_62 = (SORT_62)1 << (30 - 1); [L83] const SORT_72 mask_SORT_72 = (SORT_72)-1 >> (sizeof(SORT_72) * 8 - 3); [L84] const SORT_72 msb_SORT_72 = (SORT_72)1 << (3 - 1); [L86] const SORT_96 mask_SORT_96 = (SORT_96)-1 >> (sizeof(SORT_96) * 8 - 4); [L87] const SORT_96 msb_SORT_96 = (SORT_96)1 << (4 - 1); [L89] const SORT_101 mask_SORT_101 = (SORT_101)-1 >> (sizeof(SORT_101) * 8 - 14); [L90] const SORT_101 msb_SORT_101 = (SORT_101)1 << (14 - 1); [L92] const SORT_105 mask_SORT_105 = (SORT_105)-1 >> (sizeof(SORT_105) * 8 - 2); [L93] const SORT_105 msb_SORT_105 = (SORT_105)1 << (2 - 1); [L95] const SORT_154 mask_SORT_154 = (SORT_154)-1 >> (sizeof(SORT_154) * 8 - 7); [L96] const SORT_154 msb_SORT_154 = (SORT_154)1 << (7 - 1); [L98] const SORT_1 var_7 = 0; [L99] const SORT_1 var_8 = 1; [L100] const SORT_9 var_10 = 0; [L101] const SORT_12 var_13 = 0; [L102] const SORT_12 var_14 = 200; [L103] const SORT_72 var_73 = 5; [L104] const SORT_11 var_75 = 0; [L105] const SORT_105 var_106 = 1; [L106] const SORT_12 var_112 = 127; [L107] const SORT_11 var_119 = 64; [L108] const SORT_11 var_121 = 1; [L109] const SORT_11 var_123 = 127; [L110] const SORT_11 var_126 = 200; [L111] const SORT_72 var_131 = 4; [L112] const SORT_72 var_134 = 6; [L113] const SORT_96 var_138 = 9; [L114] const SORT_154 var_155 = 64; [L115] const SORT_72 var_166 = 0; [L116] const SORT_96 var_169 = 0; [L118] SORT_1 input_2; [L119] SORT_1 input_3; [L120] SORT_1 input_4; [L122] EXPR __VERIFIER_nondet_uchar() & mask_SORT_1 [L122] SORT_1 state_5 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L123] EXPR __VERIFIER_nondet_ushort() & mask_SORT_11 [L123] SORT_11 state_17 = __VERIFIER_nondet_ushort() & mask_SORT_11; [L124] EXPR __VERIFIER_nondet_ushort() & mask_SORT_11 [L124] SORT_11 state_76 = __VERIFIER_nondet_ushort() & mask_SORT_11; [L125] EXPR __VERIFIER_nondet_uchar() & mask_SORT_96 [L125] SORT_96 state_97 = __VERIFIER_nondet_uchar() & mask_SORT_96; [L126] EXPR __VERIFIER_nondet_uchar() & mask_SORT_96 [L126] SORT_96 state_100 = __VERIFIER_nondet_uchar() & mask_SORT_96; [L128] SORT_11 init_77_arg_1 = var_75; [L129] state_76 = init_77_arg_1 VAL [init_77_arg_1=0, mask_SORT_101=16383, mask_SORT_105=3, mask_SORT_11=65535, mask_SORT_12=255, mask_SORT_154=127, mask_SORT_1=1, mask_SORT_20=4294967295, mask_SORT_23=131071, mask_SORT_26=262143, mask_SORT_29=524287, mask_SORT_32=1048575, mask_SORT_35=2097151, mask_SORT_38=4194303, mask_SORT_41=8388607, mask_SORT_44=16777215, mask_SORT_47=33554431, mask_SORT_50=67108863, mask_SORT_53=134217727, mask_SORT_56=268435455, mask_SORT_59=536870911, mask_SORT_62=1073741823, mask_SORT_72=7, mask_SORT_96=15, mask_SORT_9=2147483647, msb_SORT_101=8192, msb_SORT_105=2, msb_SORT_11=32768, msb_SORT_12=128, msb_SORT_154=64, msb_SORT_1=1, msb_SORT_20=2147483648, msb_SORT_23=65536, msb_SORT_26=131072, msb_SORT_29=262144, msb_SORT_32=524288, msb_SORT_35=1048576, msb_SORT_38=2097152, msb_SORT_41=4194304, msb_SORT_44=8388608, msb_SORT_47=16777216, msb_SORT_50=33554432, msb_SORT_53=67108864, msb_SORT_56=134217728, msb_SORT_59=268435456, msb_SORT_62=536870912, msb_SORT_72=4, msb_SORT_96=8, msb_SORT_9=1073741824, state_100=0, state_17=0, state_5=1, state_76=0, state_97=1, var_106=1, var_10=0, var_112=127, var_119=64, var_121=1, var_123=127, var_126=200, var_131=4, var_134=6, var_138=9, var_13=0, var_14=200, var_155=64, var_166=0, var_169=0, var_73=5, var_75=0, var_7=0, var_8=1] [L132] input_2 = __VERIFIER_nondet_uchar() [L133] input_3 = __VERIFIER_nondet_uchar() [L134] EXPR input_3 & mask_SORT_1 [L134] input_3 = input_3 & mask_SORT_1 [L135] input_4 = __VERIFIER_nondet_uchar() [L136] EXPR input_4 & mask_SORT_1 [L136] input_4 = input_4 & mask_SORT_1 [L138] SORT_1 var_84_arg_0 = state_5; [L139] SORT_1 var_84 = ~var_84_arg_0; [L140] SORT_1 var_85_arg_0 = var_84; [L141] SORT_1 var_85 = ~var_85_arg_0; [L142] SORT_1 var_86_arg_0 = state_5; [L143] SORT_1 var_86_arg_1 = var_85; [L144] EXPR var_86_arg_0 | var_86_arg_1 [L144] SORT_1 var_86 = var_86_arg_0 | var_86_arg_1; [L145] EXPR var_86 & mask_SORT_1 [L145] var_86 = var_86 & mask_SORT_1 [L146] SORT_1 constr_87_arg_0 = var_86; VAL [constr_87_arg_0=1, init_77_arg_1=0, input_3=1, input_4=0, mask_SORT_101=16383, mask_SORT_105=3, mask_SORT_11=65535, mask_SORT_12=255, mask_SORT_154=127, mask_SORT_1=1, mask_SORT_20=4294967295, mask_SORT_23=131071, mask_SORT_26=262143, mask_SORT_29=524287, mask_SORT_32=1048575, mask_SORT_35=2097151, mask_SORT_38=4194303, mask_SORT_41=8388607, mask_SORT_44=16777215, mask_SORT_47=33554431, mask_SORT_50=67108863, mask_SORT_53=134217727, mask_SORT_56=268435455, mask_SORT_59=536870911, mask_SORT_62=1073741823, mask_SORT_72=7, mask_SORT_96=15, mask_SORT_9=2147483647, msb_SORT_101=8192, msb_SORT_105=2, msb_SORT_11=32768, msb_SORT_12=128, msb_SORT_154=64, msb_SORT_1=1, msb_SORT_20=2147483648, msb_SORT_23=65536, msb_SORT_26=131072, msb_SORT_29=262144, msb_SORT_32=524288, msb_SORT_35=1048576, msb_SORT_38=2097152, msb_SORT_41=4194304, msb_SORT_44=8388608, msb_SORT_47=16777216, msb_SORT_50=33554432, msb_SORT_53=67108864, msb_SORT_56=134217728, msb_SORT_59=268435456, msb_SORT_62=536870912, msb_SORT_72=4, msb_SORT_96=8, msb_SORT_9=1073741824, state_100=0, state_17=0, state_5=1, state_76=0, state_97=1, var_106=1, var_10=0, var_112=127, var_119=64, var_121=1, var_123=127, var_126=200, var_131=4, var_134=6, var_138=9, var_13=0, var_14=200, var_155=64, var_166=0, var_169=0, var_73=5, var_75=0, var_7=0, var_84=254, var_84_arg_0=1, var_85=1, var_85_arg_0=254, var_86=1, var_86_arg_0=1, var_86_arg_1=1, var_8=1] [L147] CALL assume_abort_if_not(constr_87_arg_0) VAL [\old(cond)=1] [L22] COND FALSE !(!cond) [L147] RET assume_abort_if_not(constr_87_arg_0) VAL [constr_87_arg_0=1, init_77_arg_1=0, input_3=1, input_4=0, mask_SORT_101=16383, mask_SORT_105=3, mask_SORT_11=65535, mask_SORT_12=255, mask_SORT_154=127, mask_SORT_1=1, mask_SORT_20=4294967295, mask_SORT_23=131071, mask_SORT_26=262143, mask_SORT_29=524287, mask_SORT_32=1048575, mask_SORT_35=2097151, mask_SORT_38=4194303, mask_SORT_41=8388607, mask_SORT_44=16777215, mask_SORT_47=33554431, mask_SORT_50=67108863, mask_SORT_53=134217727, mask_SORT_56=268435455, mask_SORT_59=536870911, mask_SORT_62=1073741823, mask_SORT_72=7, mask_SORT_96=15, mask_SORT_9=2147483647, msb_SORT_101=8192, msb_SORT_105=2, msb_SORT_11=32768, msb_SORT_12=128, msb_SORT_154=64, msb_SORT_1=1, msb_SORT_20=2147483648, msb_SORT_23=65536, msb_SORT_26=131072, msb_SORT_29=262144, msb_SORT_32=524288, msb_SORT_35=1048576, msb_SORT_38=2097152, msb_SORT_41=4194304, msb_SORT_44=8388608, msb_SORT_47=16777216, msb_SORT_50=33554432, msb_SORT_53=67108864, msb_SORT_56=134217728, msb_SORT_59=268435456, msb_SORT_62=536870912, msb_SORT_72=4, msb_SORT_96=8, msb_SORT_9=1073741824, state_100=0, state_17=0, state_5=1, state_76=0, state_97=1, var_106=1, var_10=0, var_112=127, var_119=64, var_121=1, var_123=127, var_126=200, var_131=4, var_134=6, var_138=9, var_13=0, var_14=200, var_155=64, var_166=0, var_169=0, var_73=5, var_75=0, var_7=0, var_84=254, var_84_arg_0=1, var_85=1, var_85_arg_0=254, var_86=1, var_86_arg_0=1, var_86_arg_1=1, var_8=1] [L148] SORT_1 var_88_arg_0 = var_8; [L149] EXPR var_88_arg_0 & mask_SORT_1 [L149] var_88_arg_0 = var_88_arg_0 & mask_SORT_1 [L150] SORT_11 var_88 = var_88_arg_0; [L151] SORT_11 var_89_arg_0 = state_76; [L152] SORT_11 var_89_arg_1 = var_88; [L153] SORT_1 var_89 = var_89_arg_0 <= var_89_arg_1; [L154] SORT_1 var_90_arg_0 = input_4; [L155] SORT_1 var_90_arg_1 = var_89; [L156] EXPR var_90_arg_0 ^ var_90_arg_1 [L156] SORT_1 var_90 = var_90_arg_0 ^ var_90_arg_1; [L157] SORT_1 var_91_arg_0 = var_90; [L158] SORT_1 var_91 = ~var_91_arg_0; [L159] SORT_1 var_92_arg_0 = var_90; [L160] SORT_1 var_92 = ~var_92_arg_0; [L161] SORT_1 var_93_arg_0 = var_91; [L162] SORT_1 var_93_arg_1 = var_92; [L163] EXPR var_93_arg_0 | var_93_arg_1 [L163] SORT_1 var_93 = var_93_arg_0 | var_93_arg_1; [L164] EXPR var_93 & mask_SORT_1 [L164] var_93 = var_93 & mask_SORT_1 [L165] SORT_1 constr_94_arg_0 = var_93; VAL [constr_87_arg_0=1, constr_94_arg_0=1, init_77_arg_1=0, input_3=1, input_4=0, mask_SORT_101=16383, mask_SORT_105=3, mask_SORT_11=65535, mask_SORT_12=255, mask_SORT_154=127, mask_SORT_1=1, mask_SORT_20=4294967295, mask_SORT_23=131071, mask_SORT_26=262143, mask_SORT_29=524287, mask_SORT_32=1048575, mask_SORT_35=2097151, mask_SORT_38=4194303, mask_SORT_41=8388607, mask_SORT_44=16777215, mask_SORT_47=33554431, mask_SORT_50=67108863, mask_SORT_53=134217727, mask_SORT_56=268435455, mask_SORT_59=536870911, mask_SORT_62=1073741823, mask_SORT_72=7, mask_SORT_96=15, mask_SORT_9=2147483647, msb_SORT_101=8192, msb_SORT_105=2, msb_SORT_11=32768, msb_SORT_12=128, msb_SORT_154=64, msb_SORT_1=1, msb_SORT_20=2147483648, msb_SORT_23=65536, msb_SORT_26=131072, msb_SORT_29=262144, msb_SORT_32=524288, msb_SORT_35=1048576, msb_SORT_38=2097152, msb_SORT_41=4194304, msb_SORT_44=8388608, msb_SORT_47=16777216, msb_SORT_50=33554432, msb_SORT_53=67108864, msb_SORT_56=134217728, msb_SORT_59=268435456, msb_SORT_62=536870912, msb_SORT_72=4, msb_SORT_96=8, msb_SORT_9=1073741824, state_100=0, state_17=0, state_5=1, state_76=0, state_97=1, var_106=1, var_10=0, var_112=127, var_119=64, var_121=1, var_123=127, var_126=200, var_131=4, var_134=6, var_138=9, var_13=0, var_14=200, var_155=64, var_166=0, var_169=0, var_73=5, var_75=0, var_7=0, var_84=254, var_84_arg_0=1, var_85=1, var_85_arg_0=254, var_86=1, var_86_arg_0=1, var_86_arg_1=1, var_88=1, var_88_arg_0=1, var_89=1, var_89_arg_0=0, var_89_arg_1=1, var_8=1, var_90=1, var_90_arg_0=0, var_90_arg_1=1, var_91=254, var_91_arg_0=1, var_92=254, var_92_arg_0=1, var_93=1, var_93_arg_0=254, var_93_arg_1=254] [L166] CALL assume_abort_if_not(constr_94_arg_0) VAL [\old(cond)=1] [L22] COND FALSE !(!cond) [L166] RET assume_abort_if_not(constr_94_arg_0) VAL [constr_87_arg_0=1, constr_94_arg_0=1, init_77_arg_1=0, input_3=1, input_4=0, mask_SORT_101=16383, mask_SORT_105=3, mask_SORT_11=65535, mask_SORT_12=255, mask_SORT_154=127, mask_SORT_1=1, mask_SORT_20=4294967295, mask_SORT_23=131071, mask_SORT_26=262143, mask_SORT_29=524287, mask_SORT_32=1048575, mask_SORT_35=2097151, mask_SORT_38=4194303, mask_SORT_41=8388607, mask_SORT_44=16777215, mask_SORT_47=33554431, mask_SORT_50=67108863, mask_SORT_53=134217727, mask_SORT_56=268435455, mask_SORT_59=536870911, mask_SORT_62=1073741823, mask_SORT_72=7, mask_SORT_96=15, mask_SORT_9=2147483647, msb_SORT_101=8192, msb_SORT_105=2, msb_SORT_11=32768, msb_SORT_12=128, msb_SORT_154=64, msb_SORT_1=1, msb_SORT_20=2147483648, msb_SORT_23=65536, msb_SORT_26=131072, msb_SORT_29=262144, msb_SORT_32=524288, msb_SORT_35=1048576, msb_SORT_38=2097152, msb_SORT_41=4194304, msb_SORT_44=8388608, msb_SORT_47=16777216, msb_SORT_50=33554432, msb_SORT_53=67108864, msb_SORT_56=134217728, msb_SORT_59=268435456, msb_SORT_62=536870912, msb_SORT_72=4, msb_SORT_96=8, msb_SORT_9=1073741824, state_100=0, state_17=0, state_5=1, state_76=0, state_97=1, var_106=1, var_10=0, var_112=127, var_119=64, var_121=1, var_123=127, var_126=200, var_131=4, var_134=6, var_138=9, var_13=0, var_14=200, var_155=64, var_166=0, var_169=0, var_73=5, var_75=0, var_7=0, var_84=254, var_84_arg_0=1, var_85=1, var_85_arg_0=254, var_86=1, var_86_arg_0=1, var_86_arg_1=1, var_88=1, var_88_arg_0=1, var_89=1, var_89_arg_0=0, var_89_arg_1=1, var_8=1, var_90=1, var_90_arg_0=0, var_90_arg_1=1, var_91=254, var_91_arg_0=1, var_92=254, var_92_arg_0=1, var_93=1, var_93_arg_0=254, var_93_arg_1=254] [L168] SORT_72 var_74_arg_0 = var_73; [L169] EXPR var_74_arg_0 & mask_SORT_72 [L169] var_74_arg_0 = var_74_arg_0 & mask_SORT_72 [L170] SORT_11 var_74 = var_74_arg_0; [L171] SORT_11 var_78_arg_0 = var_74; [L172] SORT_11 var_78_arg_1 = state_76; [L173] SORT_1 var_78 = var_78_arg_0 < var_78_arg_1; [L174] SORT_1 var_15_arg_0 = input_3; [L175] SORT_12 var_15_arg_1 = var_14; [L176] SORT_12 var_15_arg_2 = var_13; [L177] SORT_12 var_15 = var_15_arg_0 ? var_15_arg_1 : var_15_arg_2; [L178] EXPR var_15 & mask_SORT_12 [L178] var_15 = var_15 & mask_SORT_12 [L179] SORT_12 var_16_arg_0 = var_13; [L180] SORT_12 var_16_arg_1 = var_15; [L181] EXPR ((SORT_11)var_16_arg_0 << 8) | var_16_arg_1 [L181] SORT_11 var_16 = ((SORT_11)var_16_arg_0 << 8) | var_16_arg_1; [L182] SORT_11 var_18_arg_0 = var_16; [L183] SORT_11 var_18_arg_1 = state_17; [L184] SORT_11 var_18 = var_18_arg_0 - var_18_arg_1; [L185] EXPR var_18 & mask_SORT_11 [L185] var_18 = var_18 & mask_SORT_11 [L186] SORT_11 var_19_arg_0 = var_18; [L187] SORT_1 var_19 = var_19_arg_0 >> 15; [L188] SORT_1 var_21_arg_0 = var_19; [L189] SORT_9 var_21_arg_1 = var_10; [L190] EXPR ((SORT_20)var_21_arg_0 << 31) | var_21_arg_1 [L190] SORT_20 var_21 = ((SORT_20)var_21_arg_0 << 31) | var_21_arg_1; [L191] EXPR var_21 & mask_SORT_20 [L191] var_21 = var_21 & mask_SORT_20 [L192] SORT_11 var_64_arg_0 = var_18; [L193] SORT_1 var_64 = var_64_arg_0 >> 15; [L194] SORT_11 var_61_arg_0 = var_18; [L195] SORT_1 var_61 = var_61_arg_0 >> 15; [L196] SORT_11 var_58_arg_0 = var_18; [L197] SORT_1 var_58 = var_58_arg_0 >> 15; [L198] SORT_11 var_55_arg_0 = var_18; [L199] SORT_1 var_55 = var_55_arg_0 >> 15; [L200] SORT_11 var_52_arg_0 = var_18; [L201] SORT_1 var_52 = var_52_arg_0 >> 15; [L202] SORT_11 var_49_arg_0 = var_18; [L203] SORT_1 var_49 = var_49_arg_0 >> 15; [L204] SORT_11 var_46_arg_0 = var_18; [L205] SORT_1 var_46 = var_46_arg_0 >> 15; [L206] SORT_11 var_43_arg_0 = var_18; [L207] SORT_1 var_43 = var_43_arg_0 >> 15; [L208] SORT_11 var_40_arg_0 = var_18; [L209] SORT_1 var_40 = var_40_arg_0 >> 15; [L210] SORT_11 var_37_arg_0 = var_18; [L211] SORT_1 var_37 = var_37_arg_0 >> 15; [L212] SORT_11 var_34_arg_0 = var_18; [L213] SORT_1 var_34 = var_34_arg_0 >> 15; [L214] SORT_11 var_31_arg_0 = var_18; [L215] SORT_1 var_31 = var_31_arg_0 >> 15; [L216] SORT_11 var_28_arg_0 = var_18; [L217] SORT_1 var_28 = var_28_arg_0 >> 15; [L218] SORT_11 var_25_arg_0 = var_18; [L219] SORT_1 var_25 = var_25_arg_0 >> 15; [L220] SORT_11 var_22_arg_0 = var_18; [L221] SORT_1 var_22 = var_22_arg_0 >> 15; [L222] SORT_1 var_24_arg_0 = var_22; [L223] SORT_11 var_24_arg_1 = var_18; [L224] EXPR ((SORT_23)var_24_arg_0 << 16) | var_24_arg_1 [L224] SORT_23 var_24 = ((SORT_23)var_24_arg_0 << 16) | var_24_arg_1; [L225] EXPR var_24 & mask_SORT_23 [L225] var_24 = var_24 & mask_SORT_23 [L226] SORT_1 var_27_arg_0 = var_25; [L227] SORT_23 var_27_arg_1 = var_24; [L228] EXPR ((SORT_26)var_27_arg_0 << 17) | var_27_arg_1 [L228] SORT_26 var_27 = ((SORT_26)var_27_arg_0 << 17) | var_27_arg_1; [L229] EXPR var_27 & mask_SORT_26 [L229] var_27 = var_27 & mask_SORT_26 [L230] SORT_1 var_30_arg_0 = var_28; [L231] SORT_26 var_30_arg_1 = var_27; [L232] EXPR ((SORT_29)var_30_arg_0 << 18) | var_30_arg_1 [L232] SORT_29 var_30 = ((SORT_29)var_30_arg_0 << 18) | var_30_arg_1; [L233] EXPR var_30 & mask_SORT_29 [L233] var_30 = var_30 & mask_SORT_29 [L234] SORT_1 var_33_arg_0 = var_31; [L235] SORT_29 var_33_arg_1 = var_30; [L236] EXPR ((SORT_32)var_33_arg_0 << 19) | var_33_arg_1 [L236] SORT_32 var_33 = ((SORT_32)var_33_arg_0 << 19) | var_33_arg_1; [L237] EXPR var_33 & mask_SORT_32 [L237] var_33 = var_33 & mask_SORT_32 [L238] SORT_1 var_36_arg_0 = var_34; [L239] SORT_32 var_36_arg_1 = var_33; [L240] EXPR ((SORT_35)var_36_arg_0 << 20) | var_36_arg_1 [L240] SORT_35 var_36 = ((SORT_35)var_36_arg_0 << 20) | var_36_arg_1; [L241] EXPR var_36 & mask_SORT_35 [L241] var_36 = var_36 & mask_SORT_35 [L242] SORT_1 var_39_arg_0 = var_37; [L243] SORT_35 var_39_arg_1 = var_36; [L244] EXPR ((SORT_38)var_39_arg_0 << 21) | var_39_arg_1 [L244] SORT_38 var_39 = ((SORT_38)var_39_arg_0 << 21) | var_39_arg_1; [L245] EXPR var_39 & mask_SORT_38 [L245] var_39 = var_39 & mask_SORT_38 [L246] SORT_1 var_42_arg_0 = var_40; [L247] SORT_38 var_42_arg_1 = var_39; [L248] EXPR ((SORT_41)var_42_arg_0 << 22) | var_42_arg_1 [L248] SORT_41 var_42 = ((SORT_41)var_42_arg_0 << 22) | var_42_arg_1; [L249] EXPR var_42 & mask_SORT_41 [L249] var_42 = var_42 & mask_SORT_41 [L250] SORT_1 var_45_arg_0 = var_43; [L251] SORT_41 var_45_arg_1 = var_42; [L252] EXPR ((SORT_44)var_45_arg_0 << 23) | var_45_arg_1 [L252] SORT_44 var_45 = ((SORT_44)var_45_arg_0 << 23) | var_45_arg_1; [L253] EXPR var_45 & mask_SORT_44 [L253] var_45 = var_45 & mask_SORT_44 [L254] SORT_1 var_48_arg_0 = var_46; [L255] SORT_44 var_48_arg_1 = var_45; [L256] EXPR ((SORT_47)var_48_arg_0 << 24) | var_48_arg_1 [L256] SORT_47 var_48 = ((SORT_47)var_48_arg_0 << 24) | var_48_arg_1; [L257] EXPR var_48 & mask_SORT_47 [L257] var_48 = var_48 & mask_SORT_47 [L258] SORT_1 var_51_arg_0 = var_49; [L259] SORT_47 var_51_arg_1 = var_48; [L260] EXPR ((SORT_50)var_51_arg_0 << 25) | var_51_arg_1 [L260] SORT_50 var_51 = ((SORT_50)var_51_arg_0 << 25) | var_51_arg_1; [L261] EXPR var_51 & mask_SORT_50 [L261] var_51 = var_51 & mask_SORT_50 [L262] SORT_1 var_54_arg_0 = var_52; [L263] SORT_50 var_54_arg_1 = var_51; [L264] EXPR ((SORT_53)var_54_arg_0 << 26) | var_54_arg_1 [L264] SORT_53 var_54 = ((SORT_53)var_54_arg_0 << 26) | var_54_arg_1; [L265] EXPR var_54 & mask_SORT_53 [L265] var_54 = var_54 & mask_SORT_53 [L266] SORT_1 var_57_arg_0 = var_55; [L267] SORT_53 var_57_arg_1 = var_54; [L268] EXPR ((SORT_56)var_57_arg_0 << 27) | var_57_arg_1 [L268] SORT_56 var_57 = ((SORT_56)var_57_arg_0 << 27) | var_57_arg_1; [L269] EXPR var_57 & mask_SORT_56 [L269] var_57 = var_57 & mask_SORT_56 [L270] SORT_1 var_60_arg_0 = var_58; [L271] SORT_56 var_60_arg_1 = var_57; [L272] EXPR ((SORT_59)var_60_arg_0 << 28) | var_60_arg_1 [L272] SORT_59 var_60 = ((SORT_59)var_60_arg_0 << 28) | var_60_arg_1; [L273] EXPR var_60 & mask_SORT_59 [L273] var_60 = var_60 & mask_SORT_59 [L274] SORT_1 var_63_arg_0 = var_61; [L275] SORT_59 var_63_arg_1 = var_60; [L276] EXPR ((SORT_62)var_63_arg_0 << 29) | var_63_arg_1 [L276] SORT_62 var_63 = ((SORT_62)var_63_arg_0 << 29) | var_63_arg_1; [L277] EXPR var_63 & mask_SORT_62 [L277] var_63 = var_63 & mask_SORT_62 [L278] SORT_1 var_65_arg_0 = var_64; [L279] SORT_62 var_65_arg_1 = var_63; [L280] EXPR ((SORT_9)var_65_arg_0 << 30) | var_65_arg_1 [L280] SORT_9 var_65 = ((SORT_9)var_65_arg_0 << 30) | var_65_arg_1; [L281] SORT_9 var_66_arg_0 = var_65; [L282] EXPR var_66_arg_0 & mask_SORT_9 [L282] var_66_arg_0 = var_66_arg_0 & mask_SORT_9 [L283] SORT_20 var_66 = var_66_arg_0; [L284] SORT_20 var_67_arg_0 = var_21; [L285] SORT_20 var_67_arg_1 = var_66; [L286] SORT_1 var_67 = var_67_arg_0 <= var_67_arg_1; [L287] SORT_1 var_68_arg_0 = var_67; [L288] SORT_1 var_68_arg_1 = var_8; [L289] SORT_1 var_68_arg_2 = var_7; [L290] SORT_1 var_68 = var_68_arg_0 ? var_68_arg_1 : var_68_arg_2; [L291] SORT_1 var_69_arg_0 = input_3; [L292] SORT_1 var_69_arg_1 = var_68; [L293] EXPR var_69_arg_0 ^ var_69_arg_1 [L293] SORT_1 var_69 = var_69_arg_0 ^ var_69_arg_1; [L294] SORT_1 var_70_arg_0 = var_69; [L295] SORT_1 var_70 = ~var_70_arg_0; [L296] SORT_1 var_79_arg_0 = var_78; [L297] SORT_1 var_79_arg_1 = var_70; [L298] SORT_1 var_79_arg_2 = var_8; [L299] SORT_1 var_79 = var_79_arg_0 ? var_79_arg_1 : var_79_arg_2; [L300] SORT_1 var_80_arg_0 = var_79; [L301] SORT_1 var_80 = ~var_80_arg_0; [L302] SORT_1 var_81_arg_0 = var_79; [L303] SORT_1 var_81 = ~var_81_arg_0; [L304] SORT_1 var_82_arg_0 = var_80; [L305] SORT_1 var_82_arg_1 = var_81; [L306] EXPR var_82_arg_0 & var_82_arg_1 [L306] SORT_1 var_82 = var_82_arg_0 & var_82_arg_1; [L307] EXPR var_82 & mask_SORT_1 [L307] var_82 = var_82 & mask_SORT_1 [L308] SORT_1 bad_83_arg_0 = var_82; [L309] CALL __VERIFIER_assert(!(bad_83_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 2 procedures, 13 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 13.0s, OverallIterations: 1, TraceHistogramMax: 2, 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=13occurred 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, 9.4s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 12 NumberOfCodeBlocks, 12 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 21:15:53,689 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e099013-c001-4854-8216-1e01ba53c2d6/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e099013-c001-4854-8216-1e01ba53c2d6/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e099013-c001-4854-8216-1e01ba53c2d6/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_7e099013-c001-4854-8216-1e01ba53c2d6/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e099013-c001-4854-8216-1e01ba53c2d6/bin/utaipan-verify-mE87zJ7Ire/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.safe_analog_estimation_convergence.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e099013-c001-4854-8216-1e01ba53c2d6/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_7e099013-c001-4854-8216-1e01ba53c2d6/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 2e2d16516f5b2c0cf17cd8ea179f437d06662e733ae19757c10d87ee0ea2bd8e --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 21:15:56,800 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 21:15:56,965 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e099013-c001-4854-8216-1e01ba53c2d6/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2023-11-23 21:15:56,977 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 21:15:56,979 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 21:15:57,038 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 21:15:57,039 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 21:15:57,040 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 21:15:57,041 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 21:15:57,048 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 21:15:57,049 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-23 21:15:57,049 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-23 21:15:57,050 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-23 21:15:57,052 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-23 21:15:57,053 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-23 21:15:57,053 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-23 21:15:57,055 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 21:15:57,055 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 21:15:57,056 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 21:15:57,057 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 21:15:57,058 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 21:15:57,059 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 21:15:57,059 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-23 21:15:57,060 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-23 21:15:57,060 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-23 21:15:57,061 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 21:15:57,062 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 21:15:57,062 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 21:15:57,063 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-23 21:15:57,063 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 21:15:57,065 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 21:15:57,065 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:15:57,065 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 21:15:57,066 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 21:15:57,066 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 21:15:57,067 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-11-23 21:15:57,067 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-23 21:15:57,067 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 21:15:57,068 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 21:15:57,069 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-23 21:15:57,069 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 21:15:57,070 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_7e099013-c001-4854-8216-1e01ba53c2d6/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e099013-c001-4854-8216-1e01ba53c2d6/bin/utaipan-verify-mE87zJ7Ire Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2e2d16516f5b2c0cf17cd8ea179f437d06662e733ae19757c10d87ee0ea2bd8e [2023-11-23 21:15:57,587 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 21:15:57,624 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 21:15:57,628 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 21:15:57,629 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 21:15:57,630 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 21:15:57,632 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e099013-c001-4854-8216-1e01ba53c2d6/bin/utaipan-verify-mE87zJ7Ire/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.safe_analog_estimation_convergence.c [2023-11-23 21:16:01,078 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 21:16:01,381 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 21:16:01,382 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e099013-c001-4854-8216-1e01ba53c2d6/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.safe_analog_estimation_convergence.c [2023-11-23 21:16:01,415 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e099013-c001-4854-8216-1e01ba53c2d6/bin/utaipan-verify-mE87zJ7Ire/data/cd85f5c77/fdded9a6e6e14a28a7bddf0072e9799e/FLAG71c9b8bb3 [2023-11-23 21:16:01,429 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e099013-c001-4854-8216-1e01ba53c2d6/bin/utaipan-verify-mE87zJ7Ire/data/cd85f5c77/fdded9a6e6e14a28a7bddf0072e9799e [2023-11-23 21:16:01,431 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 21:16:01,433 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 21:16:01,434 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 21:16:01,434 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 21:16:01,440 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 21:16:01,440 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:16:01" (1/1) ... [2023-11-23 21:16:01,442 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@177e18ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:16:01, skipping insertion in model container [2023-11-23 21:16:01,442 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:16:01" (1/1) ... [2023-11-23 21:16:01,484 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 21:16:01,721 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_7e099013-c001-4854-8216-1e01ba53c2d6/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.safe_analog_estimation_convergence.c[1287,1300] [2023-11-23 21:16:01,941 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:16:01,955 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 21:16:01,971 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_7e099013-c001-4854-8216-1e01ba53c2d6/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.safe_analog_estimation_convergence.c[1287,1300] [2023-11-23 21:16:02,112 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:16:02,137 INFO L206 MainTranslator]: Completed translation [2023-11-23 21:16:02,138 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:16:02 WrapperNode [2023-11-23 21:16:02,138 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 21:16:02,139 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 21:16:02,140 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 21:16:02,140 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 21:16:02,148 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:16:02" (1/1) ... [2023-11-23 21:16:02,182 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:16:02" (1/1) ... [2023-11-23 21:16:02,236 INFO L138 Inliner]: procedures = 17, calls = 10, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 429 [2023-11-23 21:16:02,236 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 21:16:02,237 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 21:16:02,237 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 21:16:02,238 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 21:16:02,247 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:16:02" (1/1) ... [2023-11-23 21:16:02,247 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:16:02" (1/1) ... [2023-11-23 21:16:02,254 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:16:02" (1/1) ... [2023-11-23 21:16:02,254 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:16:02" (1/1) ... [2023-11-23 21:16:02,271 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:16:02" (1/1) ... [2023-11-23 21:16:02,274 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:16:02" (1/1) ... [2023-11-23 21:16:02,278 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:16:02" (1/1) ... [2023-11-23 21:16:02,282 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:16:02" (1/1) ... [2023-11-23 21:16:02,289 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 21:16:02,290 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 21:16:02,290 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 21:16:02,290 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 21:16:02,301 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:16:02" (1/1) ... [2023-11-23 21:16:02,311 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:16:02,327 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e099013-c001-4854-8216-1e01ba53c2d6/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:16:02,339 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e099013-c001-4854-8216-1e01ba53c2d6/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 21:16:02,366 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e099013-c001-4854-8216-1e01ba53c2d6/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 21:16:02,382 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 21:16:02,382 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-23 21:16:02,382 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-23 21:16:02,383 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-23 21:16:02,383 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 21:16:02,383 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 21:16:02,546 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 21:16:02,548 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 21:16:03,214 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 21:16:03,290 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 21:16:03,291 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-23 21:16:03,293 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:16:03 BoogieIcfgContainer [2023-11-23 21:16:03,294 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 21:16:03,297 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 21:16:03,297 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 21:16:03,301 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 21:16:03,302 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 09:16:01" (1/3) ... [2023-11-23 21:16:03,303 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45afc39 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:16:03, skipping insertion in model container [2023-11-23 21:16:03,303 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:16:02" (2/3) ... [2023-11-23 21:16:03,305 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45afc39 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:16:03, skipping insertion in model container [2023-11-23 21:16:03,305 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:16:03" (3/3) ... [2023-11-23 21:16:03,307 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.safe_analog_estimation_convergence.c [2023-11-23 21:16:03,328 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 21:16:03,329 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 21:16:03,392 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 21:16:03,400 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;@4230b507, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 21:16:03,401 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 21:16:03,406 INFO L276 IsEmpty]: Start isEmpty. Operand has 16 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 12 states have internal predecessors, (16), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-23 21:16:03,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-11-23 21:16:03,416 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:16:03,417 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:16:03,418 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:16:03,428 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:16:03,429 INFO L85 PathProgramCache]: Analyzing trace with hash 722107577, now seen corresponding path program 1 times [2023-11-23 21:16:03,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 21:16:03,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1639198574] [2023-11-23 21:16:03,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:16:03,454 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 21:16:03,454 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e099013-c001-4854-8216-1e01ba53c2d6/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 21:16:03,455 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e099013-c001-4854-8216-1e01ba53c2d6/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 21:16:03,461 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e099013-c001-4854-8216-1e01ba53c2d6/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 21:16:03,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:16:03,756 INFO L262 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-23 21:16:03,766 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:16:03,800 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-23 21:16:03,800 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:16:03,801 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-23 21:16:03,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1639198574] [2023-11-23 21:16:03,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1639198574] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:16:03,802 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:16:03,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 21:16:03,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997455] [2023-11-23 21:16:03,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:16:03,816 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-23 21:16:03,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-23 21:16:03,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-23 21:16:03,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-23 21:16:03,864 INFO L87 Difference]: Start difference. First operand has 16 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 12 states have internal predecessors, (16), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-23 21:16:03,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:16:03,921 INFO L93 Difference]: Finished difference Result 29 states and 40 transitions. [2023-11-23 21:16:03,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-23 21:16:03,924 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 16 [2023-11-23 21:16:03,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:16:03,931 INFO L225 Difference]: With dead ends: 29 [2023-11-23 21:16:03,933 INFO L226 Difference]: Without dead ends: 14 [2023-11-23 21:16:03,937 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-23 21:16:03,941 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 21:16:03,943 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 14 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 21:16:03,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2023-11-23 21:16:03,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2023-11-23 21:16:03,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 10 states have (on average 1.1) internal successors, (11), 10 states have internal predecessors, (11), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-23 21:16:03,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2023-11-23 21:16:03,984 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 16 [2023-11-23 21:16:03,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:16:03,985 INFO L495 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2023-11-23 21:16:03,985 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-23 21:16:03,986 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2023-11-23 21:16:03,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-11-23 21:16:03,988 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:16:03,988 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:16:03,992 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e099013-c001-4854-8216-1e01ba53c2d6/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 21:16:04,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e099013-c001-4854-8216-1e01ba53c2d6/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 21:16:04,193 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:16:04,194 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:16:04,194 INFO L85 PathProgramCache]: Analyzing trace with hash 1037531317, now seen corresponding path program 1 times [2023-11-23 21:16:04,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 21:16:04,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1465127029] [2023-11-23 21:16:04,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:16:04,196 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 21:16:04,197 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e099013-c001-4854-8216-1e01ba53c2d6/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 21:16:04,199 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e099013-c001-4854-8216-1e01ba53c2d6/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 21:16:04,236 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e099013-c001-4854-8216-1e01ba53c2d6/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 21:16:04,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:16:04,452 INFO L262 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 18 conjunts are in the unsatisfiable core [2023-11-23 21:16:04,458 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:16:04,815 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-23 21:16:04,815 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:16:04,816 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-23 21:16:04,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1465127029] [2023-11-23 21:16:04,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1465127029] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:16:04,816 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:16:04,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-23 21:16:04,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029989751] [2023-11-23 21:16:04,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:16:04,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 21:16:04,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-23 21:16:04,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 21:16:04,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 21:16:04,820 INFO L87 Difference]: Start difference. First operand 14 states and 15 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-23 21:16:05,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:16:05,086 INFO L93 Difference]: Finished difference Result 23 states and 26 transitions. [2023-11-23 21:16:05,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 21:16:05,087 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 16 [2023-11-23 21:16:05,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:16:05,088 INFO L225 Difference]: With dead ends: 23 [2023-11-23 21:16:05,088 INFO L226 Difference]: Without dead ends: 21 [2023-11-23 21:16:05,089 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-23 21:16:05,090 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 3 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-23 21:16:05,091 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 27 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 21:16:05,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2023-11-23 21:16:05,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 20. [2023-11-23 21:16:05,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 14 states have (on average 1.0714285714285714) internal successors, (15), 14 states have internal predecessors, (15), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-23 21:16:05,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2023-11-23 21:16:05,102 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 16 [2023-11-23 21:16:05,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:16:05,104 INFO L495 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2023-11-23 21:16:05,104 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-23 21:16:05,105 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2023-11-23 21:16:05,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-11-23 21:16:05,107 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:16:05,107 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2023-11-23 21:16:05,116 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e099013-c001-4854-8216-1e01ba53c2d6/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-11-23 21:16:05,310 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e099013-c001-4854-8216-1e01ba53c2d6/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 21:16:05,311 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:16:05,312 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:16:05,312 INFO L85 PathProgramCache]: Analyzing trace with hash -1248997715, now seen corresponding path program 1 times [2023-11-23 21:16:05,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 21:16:05,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [705423291] [2023-11-23 21:16:05,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:16:05,314 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 21:16:05,314 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e099013-c001-4854-8216-1e01ba53c2d6/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 21:16:05,317 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e099013-c001-4854-8216-1e01ba53c2d6/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 21:16:05,352 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e099013-c001-4854-8216-1e01ba53c2d6/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-11-23 21:16:05,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:16:05,978 INFO L262 TraceCheckSpWp]: Trace formula consists of 535 conjuncts, 30 conjunts are in the unsatisfiable core [2023-11-23 21:16:05,985 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:16:06,592 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-23 21:16:06,592 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 21:16:06,864 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-23 21:16:06,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [705423291] [2023-11-23 21:16:06,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [705423291] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 21:16:06,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1655905107] [2023-11-23 21:16:06,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:16:06,866 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-23 21:16:06,866 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e099013-c001-4854-8216-1e01ba53c2d6/bin/utaipan-verify-mE87zJ7Ire/cvc4 [2023-11-23 21:16:06,869 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e099013-c001-4854-8216-1e01ba53c2d6/bin/utaipan-verify-mE87zJ7Ire/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-23 21:16:06,899 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e099013-c001-4854-8216-1e01ba53c2d6/bin/utaipan-verify-mE87zJ7Ire/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process [2023-11-23 21:16:07,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:16:07,589 INFO L262 TraceCheckSpWp]: Trace formula consists of 535 conjuncts, 32 conjunts are in the unsatisfiable core [2023-11-23 21:16:07,596 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:16:08,087 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-23 21:16:08,087 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 21:16:08,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1655905107] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 21:16:08,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [813339906] [2023-11-23 21:16:08,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:16:08,298 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:16:08,298 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e099013-c001-4854-8216-1e01ba53c2d6/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:16:08,304 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e099013-c001-4854-8216-1e01ba53c2d6/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:16:08,310 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e099013-c001-4854-8216-1e01ba53c2d6/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-23 21:16:08,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:16:08,603 INFO L262 TraceCheckSpWp]: Trace formula consists of 535 conjuncts, 33 conjunts are in the unsatisfiable core [2023-11-23 21:16:08,609 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:16:09,097 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-23 21:16:09,097 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 21:16:09,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [813339906] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 21:16:09,284 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 21:16:09,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 6] total 6 [2023-11-23 21:16:09,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106265994] [2023-11-23 21:16:09,285 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 21:16:09,286 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 21:16:09,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-23 21:16:09,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 21:16:09,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-11-23 21:16:09,287 INFO L87 Difference]: Start difference. First operand 20 states and 23 transitions. Second operand has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-23 21:16:09,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:16:09,733 INFO L93 Difference]: Finished difference Result 30 states and 35 transitions. [2023-11-23 21:16:09,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 21:16:09,734 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 31 [2023-11-23 21:16:09,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:16:09,735 INFO L225 Difference]: With dead ends: 30 [2023-11-23 21:16:09,735 INFO L226 Difference]: Without dead ends: 28 [2023-11-23 21:16:09,736 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 94 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2023-11-23 21:16:09,737 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 5 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-23 21:16:09,738 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 40 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-23 21:16:09,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2023-11-23 21:16:09,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 27. [2023-11-23 21:16:09,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 19 states have (on average 1.0526315789473684) internal successors, (20), 19 states have internal predecessors, (20), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-23 21:16:09,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 32 transitions. [2023-11-23 21:16:09,748 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 32 transitions. Word has length 31 [2023-11-23 21:16:09,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:16:09,748 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 32 transitions. [2023-11-23 21:16:09,749 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-23 21:16:09,749 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 32 transitions. [2023-11-23 21:16:09,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2023-11-23 21:16:09,751 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:16:09,751 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1] [2023-11-23 21:16:09,777 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e099013-c001-4854-8216-1e01ba53c2d6/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-23 21:16:09,981 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e099013-c001-4854-8216-1e01ba53c2d6/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2023-11-23 21:16:10,181 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e099013-c001-4854-8216-1e01ba53c2d6/bin/utaipan-verify-mE87zJ7Ire/cvc4 --incremental --print-success --lang smt (5)] Forceful destruction successful, exit code 0 [2023-11-23 21:16:10,376 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e099013-c001-4854-8216-1e01ba53c2d6/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e099013-c001-4854-8216-1e01ba53c2d6/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e099013-c001-4854-8216-1e01ba53c2d6/bin/utaipan-verify-mE87zJ7Ire/cvc4 --incremental --print-success --lang smt [2023-11-23 21:16:10,377 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:16:10,377 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:16:10,377 INFO L85 PathProgramCache]: Analyzing trace with hash 252823989, now seen corresponding path program 2 times [2023-11-23 21:16:10,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 21:16:10,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2091332730] [2023-11-23 21:16:10,379 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-23 21:16:10,379 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 21:16:10,380 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e099013-c001-4854-8216-1e01ba53c2d6/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 21:16:10,381 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e099013-c001-4854-8216-1e01ba53c2d6/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 21:16:10,388 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e099013-c001-4854-8216-1e01ba53c2d6/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-11-23 21:16:11,423 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-23 21:16:11,423 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 21:16:11,445 INFO L262 TraceCheckSpWp]: Trace formula consists of 820 conjuncts, 37 conjunts are in the unsatisfiable core [2023-11-23 21:16:11,453 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:16:12,147 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2023-11-23 21:16:12,147 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 21:16:12,371 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-23 21:16:12,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2091332730] [2023-11-23 21:16:12,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2091332730] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 21:16:12,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [792032072] [2023-11-23 21:16:12,372 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-23 21:16:12,372 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-23 21:16:12,372 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e099013-c001-4854-8216-1e01ba53c2d6/bin/utaipan-verify-mE87zJ7Ire/cvc4 [2023-11-23 21:16:12,374 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e099013-c001-4854-8216-1e01ba53c2d6/bin/utaipan-verify-mE87zJ7Ire/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-23 21:16:12,399 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e099013-c001-4854-8216-1e01ba53c2d6/bin/utaipan-verify-mE87zJ7Ire/cvc4 --incremental --print-success --lang smt (8)] Waiting until timeout for monitored process [2023-11-23 21:16:13,296 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-23 21:16:13,296 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 21:16:13,333 INFO L262 TraceCheckSpWp]: Trace formula consists of 820 conjuncts, 40 conjunts are in the unsatisfiable core [2023-11-23 21:16:13,340 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:16:13,899 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2023-11-23 21:16:13,899 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 21:16:14,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [792032072] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 21:16:14,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1484162586] [2023-11-23 21:16:14,093 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-23 21:16:14,093 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:16:14,093 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e099013-c001-4854-8216-1e01ba53c2d6/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:16:14,096 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e099013-c001-4854-8216-1e01ba53c2d6/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:16:14,105 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e099013-c001-4854-8216-1e01ba53c2d6/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-23 21:16:14,501 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-23 21:16:14,501 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 21:16:14,519 INFO L262 TraceCheckSpWp]: Trace formula consists of 820 conjuncts, 40 conjunts are in the unsatisfiable core [2023-11-23 21:16:14,524 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:16:15,117 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2023-11-23 21:16:15,118 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 21:16:15,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1484162586] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 21:16:15,295 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 21:16:15,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 7] total 7 [2023-11-23 21:16:15,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021491528] [2023-11-23 21:16:15,296 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 21:16:15,296 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-23 21:16:15,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-23 21:16:15,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-23 21:16:15,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-11-23 21:16:15,297 INFO L87 Difference]: Start difference. First operand 27 states and 32 transitions. Second operand has 7 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 3 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6)