./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.unsafe_analog_estimation_convergence.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 30e01a73 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7bafd04-7d0d-4552-8a64-a5e30fc5c2ae/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7bafd04-7d0d-4552-8a64-a5e30fc5c2ae/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_b7bafd04-7d0d-4552-8a64-a5e30fc5c2ae/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7bafd04-7d0d-4552-8a64-a5e30fc5c2ae/bin/utaipan-verify-mE87zJ7Ire/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.unsafe_analog_estimation_convergence.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7bafd04-7d0d-4552-8a64-a5e30fc5c2ae/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_b7bafd04-7d0d-4552-8a64-a5e30fc5c2ae/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 37235873cdbfb4a92a6d9a366e7d975c617138dc8eee2f80d6fd06796710e280 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 21:17:01,802 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 21:17:01,929 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7bafd04-7d0d-4552-8a64-a5e30fc5c2ae/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-11-23 21:17:01,942 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 21:17:01,943 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 21:17:01,989 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 21:17:01,989 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 21:17:01,990 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 21:17:01,991 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 21:17:01,996 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 21:17:01,997 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-23 21:17:01,998 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-23 21:17:01,999 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-23 21:17:02,001 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-23 21:17:02,002 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-23 21:17:02,002 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-23 21:17:02,003 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-23 21:17:02,003 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-23 21:17:02,004 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-23 21:17:02,004 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-23 21:17:02,005 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-23 21:17:02,006 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-23 21:17:02,007 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 21:17:02,007 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 21:17:02,008 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 21:17:02,008 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 21:17:02,009 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 21:17:02,009 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 21:17:02,010 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 21:17:02,010 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 21:17:02,012 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 21:17:02,012 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 21:17:02,013 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 21:17:02,013 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 21:17:02,013 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:17:02,014 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 21:17:02,014 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 21:17:02,015 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 21:17:02,015 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-23 21:17:02,015 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 21:17:02,016 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 21:17:02,016 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 21:17:02,016 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-23 21:17:02,017 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 21:17:02,017 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_b7bafd04-7d0d-4552-8a64-a5e30fc5c2ae/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7bafd04-7d0d-4552-8a64-a5e30fc5c2ae/bin/utaipan-verify-mE87zJ7Ire Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 37235873cdbfb4a92a6d9a366e7d975c617138dc8eee2f80d6fd06796710e280 [2023-11-23 21:17:02,368 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 21:17:02,400 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 21:17:02,402 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 21:17:02,404 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 21:17:02,404 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 21:17:02,406 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7bafd04-7d0d-4552-8a64-a5e30fc5c2ae/bin/utaipan-verify-mE87zJ7Ire/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.unsafe_analog_estimation_convergence.c [2023-11-23 21:17:05,496 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 21:17:05,879 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 21:17:05,881 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7bafd04-7d0d-4552-8a64-a5e30fc5c2ae/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.unsafe_analog_estimation_convergence.c [2023-11-23 21:17:05,895 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7bafd04-7d0d-4552-8a64-a5e30fc5c2ae/bin/utaipan-verify-mE87zJ7Ire/data/8c76cf0f7/716c505c1a0241efad804e7ef7e17d1a/FLAGce781d357 [2023-11-23 21:17:05,909 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7bafd04-7d0d-4552-8a64-a5e30fc5c2ae/bin/utaipan-verify-mE87zJ7Ire/data/8c76cf0f7/716c505c1a0241efad804e7ef7e17d1a [2023-11-23 21:17:05,911 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 21:17:05,913 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 21:17:05,914 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 21:17:05,915 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 21:17:05,925 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 21:17:05,927 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:17:05" (1/1) ... [2023-11-23 21:17:05,931 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3333a557 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:17:05, skipping insertion in model container [2023-11-23 21:17:05,932 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:17:05" (1/1) ... [2023-11-23 21:17:06,000 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 21:17:06,182 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_b7bafd04-7d0d-4552-8a64-a5e30fc5c2ae/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.unsafe_analog_estimation_convergence.c[1289,1302] [2023-11-23 21:17:06,370 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:17:06,382 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 21:17:06,395 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_b7bafd04-7d0d-4552-8a64-a5e30fc5c2ae/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.unsafe_analog_estimation_convergence.c[1289,1302] [2023-11-23 21:17:06,496 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:17:06,521 INFO L206 MainTranslator]: Completed translation [2023-11-23 21:17:06,521 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:17:06 WrapperNode [2023-11-23 21:17:06,522 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 21:17:06,523 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 21:17:06,523 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 21:17:06,524 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 21:17:06,532 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:17:06" (1/1) ... [2023-11-23 21:17:06,558 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:17:06" (1/1) ... [2023-11-23 21:17:06,679 INFO L138 Inliner]: procedures = 17, calls = 10, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 955 [2023-11-23 21:17:06,679 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 21:17:06,680 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 21:17:06,680 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 21:17:06,681 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 21:17:06,697 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:17:06" (1/1) ... [2023-11-23 21:17:06,698 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:17:06" (1/1) ... [2023-11-23 21:17:06,716 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:17:06" (1/1) ... [2023-11-23 21:17:06,719 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:17:06" (1/1) ... [2023-11-23 21:17:06,763 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:17:06" (1/1) ... [2023-11-23 21:17:06,787 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:17:06" (1/1) ... [2023-11-23 21:17:06,801 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:17:06" (1/1) ... [2023-11-23 21:17:06,812 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:17:06" (1/1) ... [2023-11-23 21:17:06,844 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 21:17:06,845 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 21:17:06,845 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 21:17:06,845 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 21:17:06,846 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:17:06" (1/1) ... [2023-11-23 21:17:06,852 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:17:06,868 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7bafd04-7d0d-4552-8a64-a5e30fc5c2ae/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:17:06,881 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7bafd04-7d0d-4552-8a64-a5e30fc5c2ae/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 21:17:06,925 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7bafd04-7d0d-4552-8a64-a5e30fc5c2ae/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 21:17:06,949 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 21:17:06,951 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-23 21:17:06,951 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-23 21:17:06,952 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 21:17:06,952 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 21:17:06,952 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 21:17:07,139 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 21:17:07,142 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 21:17:08,368 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 21:17:10,034 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 21:17:10,035 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-23 21:17:10,036 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:17:10 BoogieIcfgContainer [2023-11-23 21:17:10,037 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 21:17:10,039 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 21:17:10,039 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 21:17:10,043 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 21:17:10,043 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 09:17:05" (1/3) ... [2023-11-23 21:17:10,044 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36e0a46b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:17:10, skipping insertion in model container [2023-11-23 21:17:10,045 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:17:06" (2/3) ... [2023-11-23 21:17:10,046 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36e0a46b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:17:10, skipping insertion in model container [2023-11-23 21:17:10,047 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:17:10" (3/3) ... [2023-11-23 21:17:10,049 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.unsafe_analog_estimation_convergence.c [2023-11-23 21:17:10,071 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 21:17:10,071 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 21:17:10,132 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 21:17:10,141 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;@73f8fbc4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 21:17:10,141 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 21:17:10,146 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 21:17:10,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-23 21:17:10,156 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:17:10,157 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:17:10,158 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:17:10,166 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:17:10,166 INFO L85 PathProgramCache]: Analyzing trace with hash -554344760, now seen corresponding path program 1 times [2023-11-23 21:17:10,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:17:10,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042898660] [2023-11-23 21:17:10,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:17:10,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:17:22,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 21:17:22,477 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-23 21:17:25,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 21:17:25,903 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-11-23 21:17:25,905 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-23 21:17:25,907 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-23 21:17:25,910 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 21:17:25,918 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-11-23 21:17:25,927 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-23 21:17:26,012 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2023-11-23 21:17:26,038 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 09:17:26 BoogieIcfgContainer [2023-11-23 21:17:26,043 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-23 21:17:26,045 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-23 21:17:26,045 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-23 21:17:26,046 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-23 21:17:26,047 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:17:10" (3/4) ... [2023-11-23 21:17:26,051 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-23 21:17:26,053 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-23 21:17:26,054 INFO L158 Benchmark]: Toolchain (without parser) took 20141.04ms. Allocated memory was 159.4MB in the beginning and 916.5MB in the end (delta: 757.1MB). Free memory was 127.3MB in the beginning and 661.7MB in the end (delta: -534.4MB). Peak memory consumption was 224.6MB. Max. memory is 16.1GB. [2023-11-23 21:17:26,055 INFO L158 Benchmark]: CDTParser took 1.21ms. Allocated memory is still 130.0MB. Free memory was 87.8MB in the beginning and 87.7MB in the end (delta: 139.8kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 21:17:26,057 INFO L158 Benchmark]: CACSL2BoogieTranslator took 607.74ms. Allocated memory is still 159.4MB. Free memory was 127.3MB in the beginning and 104.2MB in the end (delta: 23.1MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2023-11-23 21:17:26,058 INFO L158 Benchmark]: Boogie Procedure Inliner took 156.46ms. Allocated memory is still 159.4MB. Free memory was 104.2MB in the beginning and 89.4MB in the end (delta: 14.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-23 21:17:26,063 INFO L158 Benchmark]: Boogie Preprocessor took 163.64ms. Allocated memory is still 159.4MB. Free memory was 89.4MB in the beginning and 82.9MB in the end (delta: 6.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-11-23 21:17:26,064 INFO L158 Benchmark]: RCFGBuilder took 3192.29ms. Allocated memory was 159.4MB in the beginning and 216.0MB in the end (delta: 56.6MB). Free memory was 82.9MB in the beginning and 129.2MB in the end (delta: -46.4MB). Peak memory consumption was 90.1MB. Max. memory is 16.1GB. [2023-11-23 21:17:26,066 INFO L158 Benchmark]: TraceAbstraction took 16004.22ms. Allocated memory was 216.0MB in the beginning and 916.5MB in the end (delta: 700.4MB). Free memory was 128.2MB in the beginning and 661.7MB in the end (delta: -533.5MB). Peak memory consumption was 350.4MB. Max. memory is 16.1GB. [2023-11-23 21:17:26,066 INFO L158 Benchmark]: Witness Printer took 8.03ms. Allocated memory is still 916.5MB. Free memory was 661.7MB in the beginning and 661.7MB in the end (delta: 2.7kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 21:17:26,076 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.21ms. Allocated memory is still 130.0MB. Free memory was 87.8MB in the beginning and 87.7MB in the end (delta: 139.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 607.74ms. Allocated memory is still 159.4MB. Free memory was 127.3MB in the beginning and 104.2MB in the end (delta: 23.1MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 156.46ms. Allocated memory is still 159.4MB. Free memory was 104.2MB in the beginning and 89.4MB in the end (delta: 14.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Preprocessor took 163.64ms. Allocated memory is still 159.4MB. Free memory was 89.4MB in the beginning and 82.9MB in the end (delta: 6.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * RCFGBuilder took 3192.29ms. Allocated memory was 159.4MB in the beginning and 216.0MB in the end (delta: 56.6MB). Free memory was 82.9MB in the beginning and 129.2MB in the end (delta: -46.4MB). Peak memory consumption was 90.1MB. Max. memory is 16.1GB. * TraceAbstraction took 16004.22ms. Allocated memory was 216.0MB in the beginning and 916.5MB in the end (delta: 700.4MB). Free memory was 128.2MB in the beginning and 661.7MB in the end (delta: -533.5MB). Peak memory consumption was 350.4MB. Max. memory is 16.1GB. * Witness Printer took 8.03ms. Allocated memory is still 916.5MB. Free memory was 661.7MB in the beginning and 661.7MB in the end (delta: 2.7kB). 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 169, overapproximation of bitwiseAnd at line 157. 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 - 6); [L90] const SORT_101 msb_SORT_101 = (SORT_101)1 << (6 - 1); [L92] const SORT_1 var_7 = 0; [L93] const SORT_1 var_8 = 1; [L94] const SORT_9 var_10 = 0; [L95] const SORT_12 var_13 = 0; [L96] const SORT_12 var_14 = 200; [L97] const SORT_72 var_73 = 5; [L98] const SORT_11 var_75 = 0; [L99] const SORT_11 var_108 = 200; [L100] const SORT_72 var_113 = 4; [L101] const SORT_72 var_116 = 6; [L102] const SORT_96 var_120 = 9; [L103] const SORT_72 var_137 = 0; [L104] const SORT_96 var_140 = 0; [L106] SORT_1 input_2; [L107] SORT_1 input_3; [L108] SORT_1 input_4; [L110] EXPR __VERIFIER_nondet_uchar() & mask_SORT_1 [L110] SORT_1 state_5 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L111] EXPR __VERIFIER_nondet_ushort() & mask_SORT_11 [L111] SORT_11 state_17 = __VERIFIER_nondet_ushort() & mask_SORT_11; [L112] EXPR __VERIFIER_nondet_ushort() & mask_SORT_11 [L112] SORT_11 state_76 = __VERIFIER_nondet_ushort() & mask_SORT_11; [L113] EXPR __VERIFIER_nondet_uchar() & mask_SORT_96 [L113] SORT_96 state_97 = __VERIFIER_nondet_uchar() & mask_SORT_96; [L114] EXPR __VERIFIER_nondet_uchar() & mask_SORT_96 [L114] SORT_96 state_100 = __VERIFIER_nondet_uchar() & mask_SORT_96; [L116] SORT_11 init_77_arg_1 = var_75; [L117] state_76 = init_77_arg_1 VAL [init_77_arg_1=0, mask_SORT_101=63, mask_SORT_11=65535, mask_SORT_12=255, 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=32, msb_SORT_11=32768, msb_SORT_12=128, 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=0, var_108=200, var_10=0, var_113=4, var_116=6, var_120=9, var_137=0, var_13=0, var_140=0, var_14=200, var_73=5, var_75=0, var_7=0, var_8=1] [L120] input_2 = __VERIFIER_nondet_uchar() [L121] input_3 = __VERIFIER_nondet_uchar() [L122] EXPR input_3 & mask_SORT_1 [L122] input_3 = input_3 & mask_SORT_1 [L123] input_4 = __VERIFIER_nondet_uchar() [L124] EXPR input_4 & mask_SORT_1 [L124] input_4 = input_4 & mask_SORT_1 [L126] SORT_1 var_84_arg_0 = state_5; [L127] SORT_1 var_84 = ~var_84_arg_0; [L128] SORT_1 var_85_arg_0 = var_84; [L129] SORT_1 var_85 = ~var_85_arg_0; [L130] SORT_1 var_86_arg_0 = state_5; [L131] SORT_1 var_86_arg_1 = var_85; [L132] EXPR var_86_arg_0 | var_86_arg_1 [L132] SORT_1 var_86 = var_86_arg_0 | var_86_arg_1; [L133] EXPR var_86 & mask_SORT_1 [L133] var_86 = var_86 & mask_SORT_1 [L134] 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=63, mask_SORT_11=65535, mask_SORT_12=255, 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=32, msb_SORT_11=32768, msb_SORT_12=128, 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=0, var_108=200, var_10=0, var_113=4, var_116=6, var_120=9, var_137=0, var_13=0, var_140=0, var_14=200, 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] [L135] CALL assume_abort_if_not(constr_87_arg_0) VAL [\old(cond)=1] [L22] COND FALSE !(!cond) [L135] 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=63, mask_SORT_11=65535, mask_SORT_12=255, 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=32, msb_SORT_11=32768, msb_SORT_12=128, 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=0, var_108=200, var_10=0, var_113=4, var_116=6, var_120=9, var_137=0, var_13=0, var_140=0, var_14=200, 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] [L136] SORT_1 var_88_arg_0 = var_8; [L137] EXPR var_88_arg_0 & mask_SORT_1 [L137] var_88_arg_0 = var_88_arg_0 & mask_SORT_1 [L138] SORT_11 var_88 = var_88_arg_0; [L139] SORT_11 var_89_arg_0 = state_76; [L140] SORT_11 var_89_arg_1 = var_88; [L141] SORT_1 var_89 = var_89_arg_0 <= var_89_arg_1; [L142] SORT_1 var_90_arg_0 = input_4; [L143] SORT_1 var_90_arg_1 = var_89; [L144] EXPR var_90_arg_0 ^ var_90_arg_1 [L144] SORT_1 var_90 = var_90_arg_0 ^ var_90_arg_1; [L145] SORT_1 var_91_arg_0 = var_90; [L146] SORT_1 var_91 = ~var_91_arg_0; [L147] SORT_1 var_92_arg_0 = var_90; [L148] SORT_1 var_92 = ~var_92_arg_0; [L149] SORT_1 var_93_arg_0 = var_91; [L150] SORT_1 var_93_arg_1 = var_92; [L151] EXPR var_93_arg_0 | var_93_arg_1 [L151] SORT_1 var_93 = var_93_arg_0 | var_93_arg_1; [L152] EXPR var_93 & mask_SORT_1 [L152] var_93 = var_93 & mask_SORT_1 [L153] 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=63, mask_SORT_11=65535, mask_SORT_12=255, 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=32, msb_SORT_11=32768, msb_SORT_12=128, 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=0, var_108=200, var_10=0, var_113=4, var_116=6, var_120=9, var_137=0, var_13=0, var_140=0, var_14=200, 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] [L154] CALL assume_abort_if_not(constr_94_arg_0) VAL [\old(cond)=1] [L22] COND FALSE !(!cond) [L154] 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=63, mask_SORT_11=65535, mask_SORT_12=255, 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=32, msb_SORT_11=32768, msb_SORT_12=128, 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=0, var_108=200, var_10=0, var_113=4, var_116=6, var_120=9, var_137=0, var_13=0, var_140=0, var_14=200, 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] [L156] SORT_72 var_74_arg_0 = var_73; [L157] EXPR var_74_arg_0 & mask_SORT_72 [L157] var_74_arg_0 = var_74_arg_0 & mask_SORT_72 [L158] SORT_11 var_74 = var_74_arg_0; [L159] SORT_11 var_78_arg_0 = var_74; [L160] SORT_11 var_78_arg_1 = state_76; [L161] SORT_1 var_78 = var_78_arg_0 < var_78_arg_1; [L162] SORT_1 var_15_arg_0 = input_3; [L163] SORT_12 var_15_arg_1 = var_14; [L164] SORT_12 var_15_arg_2 = var_13; [L165] SORT_12 var_15 = var_15_arg_0 ? var_15_arg_1 : var_15_arg_2; [L166] EXPR var_15 & mask_SORT_12 [L166] var_15 = var_15 & mask_SORT_12 [L167] SORT_12 var_16_arg_0 = var_13; [L168] SORT_12 var_16_arg_1 = var_15; [L169] EXPR ((SORT_11)var_16_arg_0 << 8) | var_16_arg_1 [L169] SORT_11 var_16 = ((SORT_11)var_16_arg_0 << 8) | var_16_arg_1; [L170] SORT_11 var_18_arg_0 = var_16; [L171] SORT_11 var_18_arg_1 = state_17; [L172] SORT_11 var_18 = var_18_arg_0 - var_18_arg_1; [L173] EXPR var_18 & mask_SORT_11 [L173] var_18 = var_18 & mask_SORT_11 [L174] SORT_11 var_19_arg_0 = var_18; [L175] SORT_1 var_19 = var_19_arg_0 >> 15; [L176] SORT_1 var_21_arg_0 = var_19; [L177] SORT_9 var_21_arg_1 = var_10; [L178] EXPR ((SORT_20)var_21_arg_0 << 31) | var_21_arg_1 [L178] SORT_20 var_21 = ((SORT_20)var_21_arg_0 << 31) | var_21_arg_1; [L179] EXPR var_21 & mask_SORT_20 [L179] var_21 = var_21 & mask_SORT_20 [L180] SORT_11 var_64_arg_0 = var_18; [L181] SORT_1 var_64 = var_64_arg_0 >> 15; [L182] SORT_11 var_61_arg_0 = var_18; [L183] SORT_1 var_61 = var_61_arg_0 >> 15; [L184] SORT_11 var_58_arg_0 = var_18; [L185] SORT_1 var_58 = var_58_arg_0 >> 15; [L186] SORT_11 var_55_arg_0 = var_18; [L187] SORT_1 var_55 = var_55_arg_0 >> 15; [L188] SORT_11 var_52_arg_0 = var_18; [L189] SORT_1 var_52 = var_52_arg_0 >> 15; [L190] SORT_11 var_49_arg_0 = var_18; [L191] SORT_1 var_49 = var_49_arg_0 >> 15; [L192] SORT_11 var_46_arg_0 = var_18; [L193] SORT_1 var_46 = var_46_arg_0 >> 15; [L194] SORT_11 var_43_arg_0 = var_18; [L195] SORT_1 var_43 = var_43_arg_0 >> 15; [L196] SORT_11 var_40_arg_0 = var_18; [L197] SORT_1 var_40 = var_40_arg_0 >> 15; [L198] SORT_11 var_37_arg_0 = var_18; [L199] SORT_1 var_37 = var_37_arg_0 >> 15; [L200] SORT_11 var_34_arg_0 = var_18; [L201] SORT_1 var_34 = var_34_arg_0 >> 15; [L202] SORT_11 var_31_arg_0 = var_18; [L203] SORT_1 var_31 = var_31_arg_0 >> 15; [L204] SORT_11 var_28_arg_0 = var_18; [L205] SORT_1 var_28 = var_28_arg_0 >> 15; [L206] SORT_11 var_25_arg_0 = var_18; [L207] SORT_1 var_25 = var_25_arg_0 >> 15; [L208] SORT_11 var_22_arg_0 = var_18; [L209] SORT_1 var_22 = var_22_arg_0 >> 15; [L210] SORT_1 var_24_arg_0 = var_22; [L211] SORT_11 var_24_arg_1 = var_18; [L212] EXPR ((SORT_23)var_24_arg_0 << 16) | var_24_arg_1 [L212] SORT_23 var_24 = ((SORT_23)var_24_arg_0 << 16) | var_24_arg_1; [L213] EXPR var_24 & mask_SORT_23 [L213] var_24 = var_24 & mask_SORT_23 [L214] SORT_1 var_27_arg_0 = var_25; [L215] SORT_23 var_27_arg_1 = var_24; [L216] EXPR ((SORT_26)var_27_arg_0 << 17) | var_27_arg_1 [L216] SORT_26 var_27 = ((SORT_26)var_27_arg_0 << 17) | var_27_arg_1; [L217] EXPR var_27 & mask_SORT_26 [L217] var_27 = var_27 & mask_SORT_26 [L218] SORT_1 var_30_arg_0 = var_28; [L219] SORT_26 var_30_arg_1 = var_27; [L220] EXPR ((SORT_29)var_30_arg_0 << 18) | var_30_arg_1 [L220] SORT_29 var_30 = ((SORT_29)var_30_arg_0 << 18) | var_30_arg_1; [L221] EXPR var_30 & mask_SORT_29 [L221] var_30 = var_30 & mask_SORT_29 [L222] SORT_1 var_33_arg_0 = var_31; [L223] SORT_29 var_33_arg_1 = var_30; [L224] EXPR ((SORT_32)var_33_arg_0 << 19) | var_33_arg_1 [L224] SORT_32 var_33 = ((SORT_32)var_33_arg_0 << 19) | var_33_arg_1; [L225] EXPR var_33 & mask_SORT_32 [L225] var_33 = var_33 & mask_SORT_32 [L226] SORT_1 var_36_arg_0 = var_34; [L227] SORT_32 var_36_arg_1 = var_33; [L228] EXPR ((SORT_35)var_36_arg_0 << 20) | var_36_arg_1 [L228] SORT_35 var_36 = ((SORT_35)var_36_arg_0 << 20) | var_36_arg_1; [L229] EXPR var_36 & mask_SORT_35 [L229] var_36 = var_36 & mask_SORT_35 [L230] SORT_1 var_39_arg_0 = var_37; [L231] SORT_35 var_39_arg_1 = var_36; [L232] EXPR ((SORT_38)var_39_arg_0 << 21) | var_39_arg_1 [L232] SORT_38 var_39 = ((SORT_38)var_39_arg_0 << 21) | var_39_arg_1; [L233] EXPR var_39 & mask_SORT_38 [L233] var_39 = var_39 & mask_SORT_38 [L234] SORT_1 var_42_arg_0 = var_40; [L235] SORT_38 var_42_arg_1 = var_39; [L236] EXPR ((SORT_41)var_42_arg_0 << 22) | var_42_arg_1 [L236] SORT_41 var_42 = ((SORT_41)var_42_arg_0 << 22) | var_42_arg_1; [L237] EXPR var_42 & mask_SORT_41 [L237] var_42 = var_42 & mask_SORT_41 [L238] SORT_1 var_45_arg_0 = var_43; [L239] SORT_41 var_45_arg_1 = var_42; [L240] EXPR ((SORT_44)var_45_arg_0 << 23) | var_45_arg_1 [L240] SORT_44 var_45 = ((SORT_44)var_45_arg_0 << 23) | var_45_arg_1; [L241] EXPR var_45 & mask_SORT_44 [L241] var_45 = var_45 & mask_SORT_44 [L242] SORT_1 var_48_arg_0 = var_46; [L243] SORT_44 var_48_arg_1 = var_45; [L244] EXPR ((SORT_47)var_48_arg_0 << 24) | var_48_arg_1 [L244] SORT_47 var_48 = ((SORT_47)var_48_arg_0 << 24) | var_48_arg_1; [L245] EXPR var_48 & mask_SORT_47 [L245] var_48 = var_48 & mask_SORT_47 [L246] SORT_1 var_51_arg_0 = var_49; [L247] SORT_47 var_51_arg_1 = var_48; [L248] EXPR ((SORT_50)var_51_arg_0 << 25) | var_51_arg_1 [L248] SORT_50 var_51 = ((SORT_50)var_51_arg_0 << 25) | var_51_arg_1; [L249] EXPR var_51 & mask_SORT_50 [L249] var_51 = var_51 & mask_SORT_50 [L250] SORT_1 var_54_arg_0 = var_52; [L251] SORT_50 var_54_arg_1 = var_51; [L252] EXPR ((SORT_53)var_54_arg_0 << 26) | var_54_arg_1 [L252] SORT_53 var_54 = ((SORT_53)var_54_arg_0 << 26) | var_54_arg_1; [L253] EXPR var_54 & mask_SORT_53 [L253] var_54 = var_54 & mask_SORT_53 [L254] SORT_1 var_57_arg_0 = var_55; [L255] SORT_53 var_57_arg_1 = var_54; [L256] EXPR ((SORT_56)var_57_arg_0 << 27) | var_57_arg_1 [L256] SORT_56 var_57 = ((SORT_56)var_57_arg_0 << 27) | var_57_arg_1; [L257] EXPR var_57 & mask_SORT_56 [L257] var_57 = var_57 & mask_SORT_56 [L258] SORT_1 var_60_arg_0 = var_58; [L259] SORT_56 var_60_arg_1 = var_57; [L260] EXPR ((SORT_59)var_60_arg_0 << 28) | var_60_arg_1 [L260] SORT_59 var_60 = ((SORT_59)var_60_arg_0 << 28) | var_60_arg_1; [L261] EXPR var_60 & mask_SORT_59 [L261] var_60 = var_60 & mask_SORT_59 [L262] SORT_1 var_63_arg_0 = var_61; [L263] SORT_59 var_63_arg_1 = var_60; [L264] EXPR ((SORT_62)var_63_arg_0 << 29) | var_63_arg_1 [L264] SORT_62 var_63 = ((SORT_62)var_63_arg_0 << 29) | var_63_arg_1; [L265] EXPR var_63 & mask_SORT_62 [L265] var_63 = var_63 & mask_SORT_62 [L266] SORT_1 var_65_arg_0 = var_64; [L267] SORT_62 var_65_arg_1 = var_63; [L268] EXPR ((SORT_9)var_65_arg_0 << 30) | var_65_arg_1 [L268] SORT_9 var_65 = ((SORT_9)var_65_arg_0 << 30) | var_65_arg_1; [L269] SORT_9 var_66_arg_0 = var_65; [L270] EXPR var_66_arg_0 & mask_SORT_9 [L270] var_66_arg_0 = var_66_arg_0 & mask_SORT_9 [L271] SORT_20 var_66 = var_66_arg_0; [L272] SORT_20 var_67_arg_0 = var_21; [L273] SORT_20 var_67_arg_1 = var_66; [L274] SORT_1 var_67 = var_67_arg_0 <= var_67_arg_1; [L275] SORT_1 var_68_arg_0 = var_67; [L276] SORT_1 var_68_arg_1 = var_8; [L277] SORT_1 var_68_arg_2 = var_7; [L278] SORT_1 var_68 = var_68_arg_0 ? var_68_arg_1 : var_68_arg_2; [L279] EXPR var_68 & mask_SORT_1 [L279] var_68 = var_68 & mask_SORT_1 [L280] SORT_1 var_69_arg_0 = input_3; [L281] SORT_1 var_69_arg_1 = var_68; [L282] EXPR var_69_arg_0 ^ var_69_arg_1 [L282] SORT_1 var_69 = var_69_arg_0 ^ var_69_arg_1; [L283] SORT_1 var_70_arg_0 = var_69; [L284] SORT_1 var_70 = ~var_70_arg_0; [L285] SORT_1 var_79_arg_0 = var_78; [L286] SORT_1 var_79_arg_1 = var_70; [L287] SORT_1 var_79_arg_2 = var_8; [L288] SORT_1 var_79 = var_79_arg_0 ? var_79_arg_1 : var_79_arg_2; [L289] SORT_1 var_80_arg_0 = var_79; [L290] SORT_1 var_80 = ~var_80_arg_0; [L291] SORT_1 var_81_arg_0 = var_79; [L292] SORT_1 var_81 = ~var_81_arg_0; [L293] SORT_1 var_82_arg_0 = var_80; [L294] SORT_1 var_82_arg_1 = var_81; [L295] EXPR var_82_arg_0 & var_82_arg_1 [L295] SORT_1 var_82 = var_82_arg_0 & var_82_arg_1; [L296] EXPR var_82 & mask_SORT_1 [L296] var_82 = var_82 & mask_SORT_1 [L297] SORT_1 bad_83_arg_0 = var_82; [L298] 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: 15.8s, 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, 12.2s 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 21:17:26,134 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7bafd04-7d0d-4552-8a64-a5e30fc5c2ae/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7bafd04-7d0d-4552-8a64-a5e30fc5c2ae/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7bafd04-7d0d-4552-8a64-a5e30fc5c2ae/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_b7bafd04-7d0d-4552-8a64-a5e30fc5c2ae/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7bafd04-7d0d-4552-8a64-a5e30fc5c2ae/bin/utaipan-verify-mE87zJ7Ire/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.unsafe_analog_estimation_convergence.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7bafd04-7d0d-4552-8a64-a5e30fc5c2ae/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_b7bafd04-7d0d-4552-8a64-a5e30fc5c2ae/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 37235873cdbfb4a92a6d9a366e7d975c617138dc8eee2f80d6fd06796710e280 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 21:17:29,094 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 21:17:29,244 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7bafd04-7d0d-4552-8a64-a5e30fc5c2ae/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2023-11-23 21:17:29,255 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 21:17:29,255 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 21:17:29,299 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 21:17:29,300 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 21:17:29,300 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 21:17:29,302 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 21:17:29,307 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 21:17:29,308 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-23 21:17:29,308 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-23 21:17:29,309 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-23 21:17:29,311 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-23 21:17:29,311 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-23 21:17:29,312 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-23 21:17:29,313 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 21:17:29,313 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 21:17:29,314 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 21:17:29,315 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 21:17:29,316 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 21:17:29,316 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 21:17:29,317 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-23 21:17:29,317 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-23 21:17:29,318 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-23 21:17:29,318 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 21:17:29,319 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 21:17:29,319 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 21:17:29,320 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-23 21:17:29,320 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 21:17:29,322 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 21:17:29,322 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:17:29,322 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 21:17:29,323 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 21:17:29,323 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 21:17:29,324 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-11-23 21:17:29,324 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-23 21:17:29,324 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 21:17:29,324 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 21:17:29,326 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-23 21:17:29,326 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 21:17:29,326 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_b7bafd04-7d0d-4552-8a64-a5e30fc5c2ae/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7bafd04-7d0d-4552-8a64-a5e30fc5c2ae/bin/utaipan-verify-mE87zJ7Ire Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 37235873cdbfb4a92a6d9a366e7d975c617138dc8eee2f80d6fd06796710e280 [2023-11-23 21:17:29,785 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 21:17:29,825 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 21:17:29,828 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 21:17:29,829 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 21:17:29,830 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 21:17:29,831 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7bafd04-7d0d-4552-8a64-a5e30fc5c2ae/bin/utaipan-verify-mE87zJ7Ire/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.unsafe_analog_estimation_convergence.c [2023-11-23 21:17:33,319 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 21:17:33,621 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 21:17:33,621 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7bafd04-7d0d-4552-8a64-a5e30fc5c2ae/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.unsafe_analog_estimation_convergence.c [2023-11-23 21:17:33,647 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7bafd04-7d0d-4552-8a64-a5e30fc5c2ae/bin/utaipan-verify-mE87zJ7Ire/data/a9adda337/4006f07992ca4fcfbd76952c960118b3/FLAGf2d995d63 [2023-11-23 21:17:33,662 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7bafd04-7d0d-4552-8a64-a5e30fc5c2ae/bin/utaipan-verify-mE87zJ7Ire/data/a9adda337/4006f07992ca4fcfbd76952c960118b3 [2023-11-23 21:17:33,665 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 21:17:33,667 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 21:17:33,668 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 21:17:33,668 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 21:17:33,674 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 21:17:33,675 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:17:33" (1/1) ... [2023-11-23 21:17:33,677 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@74e34b1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:17:33, skipping insertion in model container [2023-11-23 21:17:33,677 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:17:33" (1/1) ... [2023-11-23 21:17:33,720 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 21:17:33,924 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_b7bafd04-7d0d-4552-8a64-a5e30fc5c2ae/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.unsafe_analog_estimation_convergence.c[1289,1302] [2023-11-23 21:17:34,079 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:17:34,093 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 21:17:34,150 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_b7bafd04-7d0d-4552-8a64-a5e30fc5c2ae/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.unsafe_analog_estimation_convergence.c[1289,1302] [2023-11-23 21:17:34,247 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:17:34,264 INFO L206 MainTranslator]: Completed translation [2023-11-23 21:17:34,265 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:17:34 WrapperNode [2023-11-23 21:17:34,265 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 21:17:34,267 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 21:17:34,267 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 21:17:34,267 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 21:17:34,276 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:17:34" (1/1) ... [2023-11-23 21:17:34,294 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:17:34" (1/1) ... [2023-11-23 21:17:34,363 INFO L138 Inliner]: procedures = 17, calls = 10, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 377 [2023-11-23 21:17:34,363 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 21:17:34,364 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 21:17:34,364 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 21:17:34,364 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 21:17:34,372 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:17:34" (1/1) ... [2023-11-23 21:17:34,373 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:17:34" (1/1) ... [2023-11-23 21:17:34,386 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:17:34" (1/1) ... [2023-11-23 21:17:34,387 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:17:34" (1/1) ... [2023-11-23 21:17:34,406 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:17:34" (1/1) ... [2023-11-23 21:17:34,410 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:17:34" (1/1) ... [2023-11-23 21:17:34,414 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:17:34" (1/1) ... [2023-11-23 21:17:34,417 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:17:34" (1/1) ... [2023-11-23 21:17:34,425 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 21:17:34,426 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 21:17:34,426 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 21:17:34,426 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 21:17:34,427 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:17:34" (1/1) ... [2023-11-23 21:17:34,448 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:17:34,466 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7bafd04-7d0d-4552-8a64-a5e30fc5c2ae/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:17:34,480 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7bafd04-7d0d-4552-8a64-a5e30fc5c2ae/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 21:17:34,492 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7bafd04-7d0d-4552-8a64-a5e30fc5c2ae/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 21:17:34,524 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 21:17:34,525 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-23 21:17:34,525 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-23 21:17:34,525 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-23 21:17:34,525 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 21:17:34,526 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 21:17:34,684 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 21:17:34,687 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 21:17:35,186 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 21:17:35,236 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 21:17:35,237 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-23 21:17:35,237 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:17:35 BoogieIcfgContainer [2023-11-23 21:17:35,237 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 21:17:35,240 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 21:17:35,240 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 21:17:35,243 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 21:17:35,244 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 09:17:33" (1/3) ... [2023-11-23 21:17:35,245 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@480f0077 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:17:35, skipping insertion in model container [2023-11-23 21:17:35,245 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:17:34" (2/3) ... [2023-11-23 21:17:35,245 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@480f0077 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:17:35, skipping insertion in model container [2023-11-23 21:17:35,246 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:17:35" (3/3) ... [2023-11-23 21:17:35,247 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.unsafe_analog_estimation_convergence.c [2023-11-23 21:17:35,265 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 21:17:35,265 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 21:17:35,318 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 21:17:35,325 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;@6ce9c696, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 21:17:35,326 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 21:17:35,330 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 21:17:35,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-11-23 21:17:35,350 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:17:35,351 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:17:35,351 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:17:35,357 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:17:35,359 INFO L85 PathProgramCache]: Analyzing trace with hash 722107577, now seen corresponding path program 1 times [2023-11-23 21:17:35,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 21:17:35,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1633812821] [2023-11-23 21:17:35,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:17:35,374 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 21:17:35,375 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7bafd04-7d0d-4552-8a64-a5e30fc5c2ae/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 21:17:35,378 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7bafd04-7d0d-4552-8a64-a5e30fc5c2ae/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 21:17:35,387 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7bafd04-7d0d-4552-8a64-a5e30fc5c2ae/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 21:17:35,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:17:35,665 INFO L262 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-23 21:17:35,673 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:17:35,697 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 21:17:35,697 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:17:35,698 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-23 21:17:35,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1633812821] [2023-11-23 21:17:35,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1633812821] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:17:35,699 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:17:35,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 21:17:35,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922931394] [2023-11-23 21:17:35,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:17:35,706 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-23 21:17:35,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-23 21:17:35,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-23 21:17:35,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-23 21:17:35,738 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 21:17:35,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:17:35,773 INFO L93 Difference]: Finished difference Result 29 states and 40 transitions. [2023-11-23 21:17:35,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-23 21:17:35,779 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 21:17:35,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:17:35,786 INFO L225 Difference]: With dead ends: 29 [2023-11-23 21:17:35,787 INFO L226 Difference]: Without dead ends: 14 [2023-11-23 21:17:35,793 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 21:17:35,798 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 21:17:35,799 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 21:17:35,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2023-11-23 21:17:35,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2023-11-23 21:17:35,829 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 21:17:35,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2023-11-23 21:17:35,831 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 16 [2023-11-23 21:17:35,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:17:35,832 INFO L495 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2023-11-23 21:17:35,832 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 21:17:35,832 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2023-11-23 21:17:35,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-11-23 21:17:35,834 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:17:35,834 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:17:35,844 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7bafd04-7d0d-4552-8a64-a5e30fc5c2ae/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 21:17:36,038 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7bafd04-7d0d-4552-8a64-a5e30fc5c2ae/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 21:17:36,038 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:17:36,039 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:17:36,039 INFO L85 PathProgramCache]: Analyzing trace with hash 1037531317, now seen corresponding path program 1 times [2023-11-23 21:17:36,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 21:17:36,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1617623660] [2023-11-23 21:17:36,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:17:36,040 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 21:17:36,041 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7bafd04-7d0d-4552-8a64-a5e30fc5c2ae/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 21:17:36,042 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7bafd04-7d0d-4552-8a64-a5e30fc5c2ae/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 21:17:36,043 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7bafd04-7d0d-4552-8a64-a5e30fc5c2ae/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 21:17:36,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:17:36,329 INFO L262 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 18 conjunts are in the unsatisfiable core [2023-11-23 21:17:36,334 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:17:36,672 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 21:17:36,672 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:17:36,673 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-23 21:17:36,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1617623660] [2023-11-23 21:17:36,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1617623660] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:17:36,673 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:17:36,674 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-23 21:17:36,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151112315] [2023-11-23 21:17:36,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:17:36,675 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 21:17:36,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-23 21:17:36,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 21:17:36,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 21:17:36,677 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 21:17:36,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:17:36,798 INFO L93 Difference]: Finished difference Result 23 states and 26 transitions. [2023-11-23 21:17:36,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 21:17:36,799 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 21:17:36,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:17:36,800 INFO L225 Difference]: With dead ends: 23 [2023-11-23 21:17:36,800 INFO L226 Difference]: Without dead ends: 21 [2023-11-23 21:17:36,800 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 21:17:36,802 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 3 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s 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, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 21:17:36,802 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 27 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 21:17:36,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2023-11-23 21:17:36,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 20. [2023-11-23 21:17:36,809 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 21:17:36,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2023-11-23 21:17:36,818 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 16 [2023-11-23 21:17:36,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:17:36,820 INFO L495 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2023-11-23 21:17:36,820 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 21:17:36,821 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2023-11-23 21:17:36,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-11-23 21:17:36,822 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:17:36,822 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2023-11-23 21:17:36,841 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7bafd04-7d0d-4552-8a64-a5e30fc5c2ae/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 21:17:37,026 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7bafd04-7d0d-4552-8a64-a5e30fc5c2ae/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 21:17:37,026 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:17:37,027 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:17:37,027 INFO L85 PathProgramCache]: Analyzing trace with hash -1248997715, now seen corresponding path program 1 times [2023-11-23 21:17:37,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 21:17:37,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [166696812] [2023-11-23 21:17:37,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:17:37,029 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 21:17:37,029 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7bafd04-7d0d-4552-8a64-a5e30fc5c2ae/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 21:17:37,030 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7bafd04-7d0d-4552-8a64-a5e30fc5c2ae/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 21:17:37,037 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7bafd04-7d0d-4552-8a64-a5e30fc5c2ae/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 21:17:37,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:17:37,548 INFO L262 TraceCheckSpWp]: Trace formula consists of 490 conjuncts, 30 conjunts are in the unsatisfiable core [2023-11-23 21:17:37,554 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:17:38,161 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 21:17:38,162 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 21:17:38,396 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-23 21:17:38,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [166696812] [2023-11-23 21:17:38,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [166696812] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 21:17:38,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [729726866] [2023-11-23 21:17:38,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:17:38,405 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-23 21:17:38,405 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7bafd04-7d0d-4552-8a64-a5e30fc5c2ae/bin/utaipan-verify-mE87zJ7Ire/cvc4 [2023-11-23 21:17:38,412 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7bafd04-7d0d-4552-8a64-a5e30fc5c2ae/bin/utaipan-verify-mE87zJ7Ire/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-23 21:17:38,425 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7bafd04-7d0d-4552-8a64-a5e30fc5c2ae/bin/utaipan-verify-mE87zJ7Ire/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process [2023-11-23 21:17:38,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:17:38,946 INFO L262 TraceCheckSpWp]: Trace formula consists of 490 conjuncts, 32 conjunts are in the unsatisfiable core [2023-11-23 21:17:38,952 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:17:39,358 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 21:17:39,358 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 21:17:39,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [729726866] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 21:17:39,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1248677397] [2023-11-23 21:17:39,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:17:39,530 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:17:39,530 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7bafd04-7d0d-4552-8a64-a5e30fc5c2ae/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:17:39,538 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7bafd04-7d0d-4552-8a64-a5e30fc5c2ae/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:17:39,542 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7bafd04-7d0d-4552-8a64-a5e30fc5c2ae/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-23 21:17:39,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:17:39,822 INFO L262 TraceCheckSpWp]: Trace formula consists of 490 conjuncts, 33 conjunts are in the unsatisfiable core [2023-11-23 21:17:39,829 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:17:40,262 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 21:17:40,262 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 21:17:40,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1248677397] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 21:17:40,438 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 21:17:40,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 6] total 6 [2023-11-23 21:17:40,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631265102] [2023-11-23 21:17:40,439 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 21:17:40,440 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 21:17:40,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-23 21:17:40,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 21:17:40,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-11-23 21:17:40,441 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 21:17:40,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:17:40,684 INFO L93 Difference]: Finished difference Result 30 states and 35 transitions. [2023-11-23 21:17:40,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 21:17:40,685 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 21:17:40,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:17:40,687 INFO L225 Difference]: With dead ends: 30 [2023-11-23 21:17:40,687 INFO L226 Difference]: Without dead ends: 28 [2023-11-23 21:17:40,687 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 21:17:40,688 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 5 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s 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, 0.2s IncrementalHoareTripleChecker+Time [2023-11-23 21:17:40,689 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 40 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 21:17:40,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2023-11-23 21:17:40,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 27. [2023-11-23 21:17:40,697 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 21:17:40,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 32 transitions. [2023-11-23 21:17:40,699 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 32 transitions. Word has length 31 [2023-11-23 21:17:40,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:17:40,700 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 32 transitions. [2023-11-23 21:17:40,700 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 21:17:40,700 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 32 transitions. [2023-11-23 21:17:40,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2023-11-23 21:17:40,702 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:17:40,702 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1] [2023-11-23 21:17:40,722 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7bafd04-7d0d-4552-8a64-a5e30fc5c2ae/bin/utaipan-verify-mE87zJ7Ire/cvc4 --incremental --print-success --lang smt (5)] Forceful destruction successful, exit code 0 [2023-11-23 21:17:40,928 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7bafd04-7d0d-4552-8a64-a5e30fc5c2ae/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 21:17:41,138 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7bafd04-7d0d-4552-8a64-a5e30fc5c2ae/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-23 21:17:41,322 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7bafd04-7d0d-4552-8a64-a5e30fc5c2ae/bin/utaipan-verify-mE87zJ7Ire/cvc4 --incremental --print-success --lang smt,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7bafd04-7d0d-4552-8a64-a5e30fc5c2ae/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7bafd04-7d0d-4552-8a64-a5e30fc5c2ae/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:17:41,322 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:17:41,323 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:17:41,323 INFO L85 PathProgramCache]: Analyzing trace with hash 252823989, now seen corresponding path program 2 times [2023-11-23 21:17:41,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 21:17:41,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1982302750] [2023-11-23 21:17:41,325 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-23 21:17:41,325 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 21:17:41,326 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7bafd04-7d0d-4552-8a64-a5e30fc5c2ae/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 21:17:41,327 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7bafd04-7d0d-4552-8a64-a5e30fc5c2ae/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 21:17:41,344 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7bafd04-7d0d-4552-8a64-a5e30fc5c2ae/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 21:17:42,129 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-23 21:17:42,129 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 21:17:42,148 INFO L262 TraceCheckSpWp]: Trace formula consists of 740 conjuncts, 37 conjunts are in the unsatisfiable core [2023-11-23 21:17:42,156 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:17:42,717 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 21:17:42,717 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 21:17:42,901 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-23 21:17:42,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1982302750] [2023-11-23 21:17:42,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1982302750] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 21:17:42,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [932186515] [2023-11-23 21:17:42,902 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-23 21:17:42,902 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-23 21:17:42,903 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7bafd04-7d0d-4552-8a64-a5e30fc5c2ae/bin/utaipan-verify-mE87zJ7Ire/cvc4 [2023-11-23 21:17:42,904 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7bafd04-7d0d-4552-8a64-a5e30fc5c2ae/bin/utaipan-verify-mE87zJ7Ire/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-23 21:17:42,936 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7bafd04-7d0d-4552-8a64-a5e30fc5c2ae/bin/utaipan-verify-mE87zJ7Ire/cvc4 --incremental --print-success --lang smt (8)] Waiting until timeout for monitored process [2023-11-23 21:17:43,613 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-23 21:17:43,613 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 21:17:43,625 INFO L262 TraceCheckSpWp]: Trace formula consists of 740 conjuncts, 40 conjunts are in the unsatisfiable core [2023-11-23 21:17:43,632 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:17:44,133 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 21:17:44,133 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 21:17:44,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [932186515] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 21:17:44,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [542663672] [2023-11-23 21:17:44,320 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-23 21:17:44,320 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:17:44,320 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7bafd04-7d0d-4552-8a64-a5e30fc5c2ae/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:17:44,321 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7bafd04-7d0d-4552-8a64-a5e30fc5c2ae/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:17:44,344 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7bafd04-7d0d-4552-8a64-a5e30fc5c2ae/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-23 21:17:44,643 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-23 21:17:44,643 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 21:17:44,654 INFO L262 TraceCheckSpWp]: Trace formula consists of 740 conjuncts, 40 conjunts are in the unsatisfiable core [2023-11-23 21:17:44,660 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:17:45,203 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 21:17:45,203 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 21:17:45,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [542663672] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 21:17:45,366 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 21:17:45,366 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 7] total 7 [2023-11-23 21:17:45,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698048696] [2023-11-23 21:17:45,367 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 21:17:45,367 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-23 21:17:45,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-23 21:17:45,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-23 21:17:45,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-11-23 21:17:45,369 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) [2023-11-23 21:17:45,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:17:45,768 INFO L93 Difference]: Finished difference Result 37 states and 44 transitions. [2023-11-23 21:17:45,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-23 21:17:45,769 INFO L78 Accepts]: Start accepts. Automaton has 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) Word has length 46 [2023-11-23 21:17:45,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:17:45,771 INFO L225 Difference]: With dead ends: 37 [2023-11-23 21:17:45,771 INFO L226 Difference]: Without dead ends: 35 [2023-11-23 21:17:45,771 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 138 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2023-11-23 21:17:45,772 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 6 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-23 21:17:45,773 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 60 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-23 21:17:45,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2023-11-23 21:17:45,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 34. [2023-11-23 21:17:45,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 24 states have (on average 1.0416666666666667) internal successors, (25), 24 states have internal predecessors, (25), 8 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-23 21:17:45,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 41 transitions. [2023-11-23 21:17:45,784 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 41 transitions. Word has length 46 [2023-11-23 21:17:45,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:17:45,785 INFO L495 AbstractCegarLoop]: Abstraction has 34 states and 41 transitions. [2023-11-23 21:17:45,785 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has 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) [2023-11-23 21:17:45,785 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 41 transitions. [2023-11-23 21:17:45,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-11-23 21:17:45,790 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:17:45,790 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 4, 4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1] [2023-11-23 21:17:45,803 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7bafd04-7d0d-4552-8a64-a5e30fc5c2ae/bin/utaipan-verify-mE87zJ7Ire/cvc4 --incremental --print-success --lang smt (8)] Ended with exit code 0 [2023-11-23 21:17:46,003 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7bafd04-7d0d-4552-8a64-a5e30fc5c2ae/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)] Forceful destruction successful, exit code 0 [2023-11-23 21:17:46,242 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7bafd04-7d0d-4552-8a64-a5e30fc5c2ae/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-23 21:17:46,396 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7bafd04-7d0d-4552-8a64-a5e30fc5c2ae/bin/utaipan-verify-mE87zJ7Ire/cvc4 --incremental --print-success --lang smt,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7bafd04-7d0d-4552-8a64-a5e30fc5c2ae/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7bafd04-7d0d-4552-8a64-a5e30fc5c2ae/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:17:46,397 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:17:46,397 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:17:46,397 INFO L85 PathProgramCache]: Analyzing trace with hash 809983405, now seen corresponding path program 3 times [2023-11-23 21:17:46,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 21:17:46,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1944408454] [2023-11-23 21:17:46,398 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-23 21:17:46,398 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 21:17:46,399 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7bafd04-7d0d-4552-8a64-a5e30fc5c2ae/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 21:17:46,400 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7bafd04-7d0d-4552-8a64-a5e30fc5c2ae/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 21:17:46,401 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7bafd04-7d0d-4552-8a64-a5e30fc5c2ae/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process