./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.eq_sdp_v3.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 527bcce2 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_7f30cd0f-0b44-4a3c-9983-da9a74532f23/bin/utaipan-verify-QoSU8krkJ5/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f30cd0f-0b44-4a3c-9983-da9a74532f23/bin/utaipan-verify-QoSU8krkJ5/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f30cd0f-0b44-4a3c-9983-da9a74532f23/bin/utaipan-verify-QoSU8krkJ5/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f30cd0f-0b44-4a3c-9983-da9a74532f23/bin/utaipan-verify-QoSU8krkJ5/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.eq_sdp_v3.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f30cd0f-0b44-4a3c-9983-da9a74532f23/bin/utaipan-verify-QoSU8krkJ5/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f30cd0f-0b44-4a3c-9983-da9a74532f23/bin/utaipan-verify-QoSU8krkJ5 --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 449d552a97f801da54ed90777e1477523d6fe1962bd976a4f73c924025a5f144 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-527bcce [2023-11-21 19:54:43,987 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-21 19:54:44,144 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f30cd0f-0b44-4a3c-9983-da9a74532f23/bin/utaipan-verify-QoSU8krkJ5/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-11-21 19:54:44,153 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-21 19:54:44,155 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-21 19:54:44,204 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-21 19:54:44,206 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-21 19:54:44,206 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-21 19:54:44,208 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-21 19:54:44,214 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-21 19:54:44,215 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-21 19:54:44,215 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-21 19:54:44,216 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-21 19:54:44,218 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-21 19:54:44,219 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-21 19:54:44,220 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-21 19:54:44,220 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-21 19:54:44,221 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-21 19:54:44,222 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-21 19:54:44,222 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-21 19:54:44,223 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-21 19:54:44,224 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-21 19:54:44,225 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-21 19:54:44,226 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-21 19:54:44,227 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-21 19:54:44,228 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-21 19:54:44,228 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-21 19:54:44,229 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-21 19:54:44,229 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-21 19:54:44,230 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-21 19:54:44,232 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-21 19:54:44,232 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-21 19:54:44,233 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-21 19:54:44,233 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-21 19:54:44,234 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 19:54:44,234 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-21 19:54:44,235 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-21 19:54:44,235 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-21 19:54:44,236 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-21 19:54:44,236 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-21 19:54:44,236 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-21 19:54:44,237 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-21 19:54:44,237 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-21 19:54:44,238 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-21 19:54:44,239 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_7f30cd0f-0b44-4a3c-9983-da9a74532f23/bin/utaipan-verify-QoSU8krkJ5/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f30cd0f-0b44-4a3c-9983-da9a74532f23/bin/utaipan-verify-QoSU8krkJ5 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 449d552a97f801da54ed90777e1477523d6fe1962bd976a4f73c924025a5f144 [2023-11-21 19:54:44,583 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-21 19:54:44,627 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-21 19:54:44,631 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-21 19:54:44,632 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-21 19:54:44,636 INFO L274 PluginConnector]: CDTParser initialized [2023-11-21 19:54:44,638 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f30cd0f-0b44-4a3c-9983-da9a74532f23/bin/utaipan-verify-QoSU8krkJ5/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.eq_sdp_v3.c [2023-11-21 19:54:48,476 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-21 19:54:48,839 INFO L384 CDTParser]: Found 1 translation units. [2023-11-21 19:54:48,840 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f30cd0f-0b44-4a3c-9983-da9a74532f23/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.eq_sdp_v3.c [2023-11-21 19:54:48,853 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f30cd0f-0b44-4a3c-9983-da9a74532f23/bin/utaipan-verify-QoSU8krkJ5/data/8b813bcd8/82b5c2a12e8b46a1a1165fe768c48e56/FLAGd60eb61d8 [2023-11-21 19:54:48,876 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f30cd0f-0b44-4a3c-9983-da9a74532f23/bin/utaipan-verify-QoSU8krkJ5/data/8b813bcd8/82b5c2a12e8b46a1a1165fe768c48e56 [2023-11-21 19:54:48,882 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-21 19:54:48,885 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-21 19:54:48,890 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-21 19:54:48,890 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-21 19:54:48,898 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-21 19:54:48,899 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 07:54:48" (1/1) ... [2023-11-21 19:54:48,901 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@171bc455 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:54:48, skipping insertion in model container [2023-11-21 19:54:48,901 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 07:54:48" (1/1) ... [2023-11-21 19:54:48,962 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 19:54:49,164 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_7f30cd0f-0b44-4a3c-9983-da9a74532f23/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.eq_sdp_v3.c[1249,1262] [2023-11-21 19:54:49,274 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 19:54:49,289 INFO L202 MainTranslator]: Completed pre-run [2023-11-21 19:54:49,306 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_7f30cd0f-0b44-4a3c-9983-da9a74532f23/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.eq_sdp_v3.c[1249,1262] [2023-11-21 19:54:49,400 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 19:54:49,432 INFO L206 MainTranslator]: Completed translation [2023-11-21 19:54:49,433 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:54:49 WrapperNode [2023-11-21 19:54:49,433 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-21 19:54:49,435 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-21 19:54:49,435 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-21 19:54:49,435 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-21 19:54:49,445 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:54:49" (1/1) ... [2023-11-21 19:54:49,465 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:54:49" (1/1) ... [2023-11-21 19:54:49,568 INFO L138 Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 464 [2023-11-21 19:54:49,576 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-21 19:54:49,577 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-21 19:54:49,577 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-21 19:54:49,578 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-21 19:54:49,590 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:54:49" (1/1) ... [2023-11-21 19:54:49,591 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:54:49" (1/1) ... [2023-11-21 19:54:49,614 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:54:49" (1/1) ... [2023-11-21 19:54:49,614 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:54:49" (1/1) ... [2023-11-21 19:54:49,655 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:54:49" (1/1) ... [2023-11-21 19:54:49,662 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:54:49" (1/1) ... [2023-11-21 19:54:49,670 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:54:49" (1/1) ... [2023-11-21 19:54:49,678 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:54:49" (1/1) ... [2023-11-21 19:54:49,696 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-21 19:54:49,697 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-21 19:54:49,698 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-21 19:54:49,698 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-21 19:54:49,699 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:54:49" (1/1) ... [2023-11-21 19:54:49,707 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 19:54:49,728 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f30cd0f-0b44-4a3c-9983-da9a74532f23/bin/utaipan-verify-QoSU8krkJ5/z3 [2023-11-21 19:54:49,749 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f30cd0f-0b44-4a3c-9983-da9a74532f23/bin/utaipan-verify-QoSU8krkJ5/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-21 19:54:49,778 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f30cd0f-0b44-4a3c-9983-da9a74532f23/bin/utaipan-verify-QoSU8krkJ5/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-21 19:54:49,816 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-21 19:54:49,816 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-21 19:54:49,817 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-21 19:54:49,817 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-21 19:54:50,024 INFO L240 CfgBuilder]: Building ICFG [2023-11-21 19:54:50,028 INFO L266 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-21 19:54:51,085 INFO L281 CfgBuilder]: Performing block encoding [2023-11-21 19:54:51,862 INFO L303 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-21 19:54:51,862 INFO L308 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-21 19:54:51,865 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 07:54:51 BoogieIcfgContainer [2023-11-21 19:54:51,865 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-21 19:54:51,868 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-21 19:54:51,869 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-21 19:54:51,873 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-21 19:54:51,873 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 07:54:48" (1/3) ... [2023-11-21 19:54:51,874 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@316c81d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 07:54:51, skipping insertion in model container [2023-11-21 19:54:51,874 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:54:49" (2/3) ... [2023-11-21 19:54:51,877 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@316c81d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 07:54:51, skipping insertion in model container [2023-11-21 19:54:51,877 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 07:54:51" (3/3) ... [2023-11-21 19:54:51,879 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.eq_sdp_v3.c [2023-11-21 19:54:51,909 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-21 19:54:51,909 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-21 19:54:51,987 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-21 19:54:51,997 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;@276e68d9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-21 19:54:51,998 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-21 19:54:52,004 INFO L276 IsEmpty]: Start isEmpty. Operand has 7 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:54:52,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-11-21 19:54:52,013 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:54:52,014 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-11-21 19:54:52,018 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 19:54:52,028 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:54:52,028 INFO L85 PathProgramCache]: Analyzing trace with hash 12905488, now seen corresponding path program 1 times [2023-11-21 19:54:52,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:54:52,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163290759] [2023-11-21 19:54:52,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:54:52,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:54:52,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 19:54:52,713 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-21 19:54:52,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 19:54:52,926 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-11-21 19:54:52,928 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-21 19:54:52,930 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-21 19:54:52,933 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-21 19:54:52,939 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-11-21 19:54:52,944 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-21 19:54:52,989 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2023-11-21 19:54:53,013 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.11 07:54:53 BoogieIcfgContainer [2023-11-21 19:54:53,013 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-21 19:54:53,014 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-21 19:54:53,015 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-21 19:54:53,015 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-21 19:54:53,016 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 07:54:51" (3/4) ... [2023-11-21 19:54:53,019 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-21 19:54:53,020 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-21 19:54:53,021 INFO L158 Benchmark]: Toolchain (without parser) took 4136.01ms. Allocated memory is still 201.3MB. Free memory was 154.6MB in the beginning and 91.6MB in the end (delta: 63.1MB). Peak memory consumption was 64.6MB. Max. memory is 16.1GB. [2023-11-21 19:54:53,022 INFO L158 Benchmark]: CDTParser took 2.87ms. Allocated memory is still 134.2MB. Free memory is still 77.3MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-21 19:54:53,023 INFO L158 Benchmark]: CACSL2BoogieTranslator took 543.65ms. Allocated memory is still 201.3MB. Free memory was 154.6MB in the beginning and 138.4MB in the end (delta: 16.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2023-11-21 19:54:53,025 INFO L158 Benchmark]: Boogie Procedure Inliner took 141.73ms. Allocated memory is still 201.3MB. Free memory was 138.4MB in the beginning and 129.5MB in the end (delta: 8.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-11-21 19:54:53,027 INFO L158 Benchmark]: Boogie Preprocessor took 119.57ms. Allocated memory is still 201.3MB. Free memory was 129.5MB in the beginning and 125.8MB in the end (delta: 3.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-21 19:54:53,032 INFO L158 Benchmark]: RCFGBuilder took 2168.13ms. Allocated memory is still 201.3MB. Free memory was 125.8MB in the beginning and 130.4MB in the end (delta: -4.6MB). Peak memory consumption was 72.9MB. Max. memory is 16.1GB. [2023-11-21 19:54:53,033 INFO L158 Benchmark]: TraceAbstraction took 1145.36ms. Allocated memory is still 201.3MB. Free memory was 130.4MB in the beginning and 91.6MB in the end (delta: 38.8MB). Peak memory consumption was 37.7MB. Max. memory is 16.1GB. [2023-11-21 19:54:53,033 INFO L158 Benchmark]: Witness Printer took 6.07ms. Allocated memory is still 201.3MB. Free memory is still 91.6MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-21 19:54:53,037 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 2.87ms. Allocated memory is still 134.2MB. Free memory is still 77.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 543.65ms. Allocated memory is still 201.3MB. Free memory was 154.6MB in the beginning and 138.4MB in the end (delta: 16.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 141.73ms. Allocated memory is still 201.3MB. Free memory was 138.4MB in the beginning and 129.5MB in the end (delta: 8.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 119.57ms. Allocated memory is still 201.3MB. Free memory was 129.5MB in the beginning and 125.8MB in the end (delta: 3.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 2168.13ms. Allocated memory is still 201.3MB. Free memory was 125.8MB in the beginning and 130.4MB in the end (delta: -4.6MB). Peak memory consumption was 72.9MB. Max. memory is 16.1GB. * TraceAbstraction took 1145.36ms. Allocated memory is still 201.3MB. Free memory was 130.4MB in the beginning and 91.6MB in the end (delta: 38.8MB). Peak memory consumption was 37.7MB. Max. memory is 16.1GB. * Witness Printer took 6.07ms. Allocated memory is still 201.3MB. Free memory is still 91.6MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 21]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: overapproximation of bitwiseAnd at line 88. Possible FailurePath: [L26] const SORT_1 mask_SORT_1 = (SORT_1)-1 >> (sizeof(SORT_1) * 8 - 8); [L27] const SORT_1 msb_SORT_1 = (SORT_1)1 << (8 - 1); [L29] const SORT_5 mask_SORT_5 = (SORT_5)-1 >> (sizeof(SORT_5) * 8 - 1); [L30] const SORT_5 msb_SORT_5 = (SORT_5)1 << (1 - 1); [L32] const SORT_1 var_10 = 0; [L33] const SORT_5 var_18 = 1; [L34] const SORT_5 var_28 = 0; [L36] SORT_1 input_2; [L37] SORT_1 input_3; [L38] SORT_1 input_4; [L39] SORT_5 input_6; [L40] SORT_5 input_7; [L41] SORT_5 input_8; [L42] SORT_5 input_9; [L44] EXPR __VERIFIER_nondet_uchar() & mask_SORT_1 [L44] SORT_1 state_11 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L45] EXPR __VERIFIER_nondet_uchar() & mask_SORT_1 [L45] SORT_1 state_13 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L46] EXPR __VERIFIER_nondet_uchar() & mask_SORT_1 [L46] SORT_1 state_22 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L47] EXPR __VERIFIER_nondet_uchar() & mask_SORT_1 [L47] SORT_1 state_24 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L48] EXPR __VERIFIER_nondet_uchar() & mask_SORT_1 [L48] SORT_1 state_26 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L49] EXPR __VERIFIER_nondet_uchar() & mask_SORT_5 [L49] SORT_5 state_29 = __VERIFIER_nondet_uchar() & mask_SORT_5; [L50] EXPR __VERIFIER_nondet_uchar() & mask_SORT_5 [L50] SORT_5 state_31 = __VERIFIER_nondet_uchar() & mask_SORT_5; [L51] EXPR __VERIFIER_nondet_uchar() & mask_SORT_1 [L51] SORT_1 state_33 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L52] EXPR __VERIFIER_nondet_uchar() & mask_SORT_5 [L52] SORT_5 state_35 = __VERIFIER_nondet_uchar() & mask_SORT_5; [L53] EXPR __VERIFIER_nondet_uchar() & mask_SORT_1 [L53] SORT_1 state_37 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L54] EXPR __VERIFIER_nondet_uchar() & mask_SORT_1 [L54] SORT_1 state_40 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L55] EXPR __VERIFIER_nondet_uchar() & mask_SORT_1 [L55] SORT_1 state_42 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L57] SORT_1 init_12_arg_1 = var_10; [L58] state_11 = init_12_arg_1 [L59] SORT_1 init_14_arg_1 = var_10; [L60] state_13 = init_14_arg_1 [L61] SORT_1 init_23_arg_1 = var_10; [L62] state_22 = init_23_arg_1 [L63] SORT_1 init_25_arg_1 = var_10; [L64] state_24 = init_25_arg_1 [L65] SORT_1 init_27_arg_1 = var_10; [L66] state_26 = init_27_arg_1 [L67] SORT_5 init_30_arg_1 = var_28; [L68] state_29 = init_30_arg_1 [L69] SORT_5 init_32_arg_1 = var_28; [L70] state_31 = init_32_arg_1 [L71] SORT_1 init_34_arg_1 = var_10; [L72] state_33 = init_34_arg_1 [L73] SORT_5 init_36_arg_1 = var_28; [L74] state_35 = init_36_arg_1 [L75] SORT_1 init_38_arg_1 = var_10; [L76] state_37 = init_38_arg_1 [L77] SORT_1 init_41_arg_1 = var_10; [L78] state_40 = init_41_arg_1 [L79] SORT_1 init_43_arg_1 = var_10; [L80] state_42 = init_43_arg_1 VAL [init_12_arg_1=0, init_14_arg_1=0, init_23_arg_1=0, init_25_arg_1=0, init_27_arg_1=0, init_30_arg_1=0, init_32_arg_1=0, init_34_arg_1=0, init_36_arg_1=0, init_38_arg_1=0, init_41_arg_1=0, init_43_arg_1=0, mask_SORT_1=255, mask_SORT_5=1, msb_SORT_1=128, msb_SORT_5=1, state_11=0, state_13=0, state_22=0, state_24=0, state_26=0, state_29=0, state_31=0, state_33=0, state_35=0, state_37=0, state_40=0, state_42=0, var_10=0, var_18=1, var_28=0] [L83] input_2 = __VERIFIER_nondet_uchar() [L84] input_3 = __VERIFIER_nondet_uchar() [L85] input_4 = __VERIFIER_nondet_uchar() [L86] input_6 = __VERIFIER_nondet_uchar() [L87] input_7 = __VERIFIER_nondet_uchar() [L88] EXPR input_7 & mask_SORT_5 [L88] input_7 = input_7 & mask_SORT_5 [L89] input_8 = __VERIFIER_nondet_uchar() [L90] EXPR input_8 & mask_SORT_5 [L90] input_8 = input_8 & mask_SORT_5 [L91] input_9 = __VERIFIER_nondet_uchar() [L92] EXPR input_9 & mask_SORT_5 [L92] input_9 = input_9 & mask_SORT_5 [L95] SORT_1 var_15_arg_0 = state_11; [L96] SORT_1 var_15_arg_1 = state_13; [L97] SORT_5 var_15 = var_15_arg_0 == var_15_arg_1; [L98] SORT_5 var_19_arg_0 = var_15; [L99] SORT_5 var_19 = ~var_19_arg_0; [L100] SORT_5 var_20_arg_0 = var_18; [L101] SORT_5 var_20_arg_1 = var_19; [L102] EXPR var_20_arg_0 & var_20_arg_1 [L102] SORT_5 var_20 = var_20_arg_0 & var_20_arg_1; [L103] EXPR var_20 & mask_SORT_5 [L103] var_20 = var_20 & mask_SORT_5 [L104] SORT_5 bad_21_arg_0 = var_20; [L105] CALL __VERIFIER_assert(!(bad_21_arg_0)) [L21] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L21] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 7 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.0s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=7occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2023-11-21 19:54:53,091 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f30cd0f-0b44-4a3c-9983-da9a74532f23/bin/utaipan-verify-QoSU8krkJ5/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with 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_7f30cd0f-0b44-4a3c-9983-da9a74532f23/bin/utaipan-verify-QoSU8krkJ5/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f30cd0f-0b44-4a3c-9983-da9a74532f23/bin/utaipan-verify-QoSU8krkJ5/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f30cd0f-0b44-4a3c-9983-da9a74532f23/bin/utaipan-verify-QoSU8krkJ5/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f30cd0f-0b44-4a3c-9983-da9a74532f23/bin/utaipan-verify-QoSU8krkJ5/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.eq_sdp_v3.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f30cd0f-0b44-4a3c-9983-da9a74532f23/bin/utaipan-verify-QoSU8krkJ5/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f30cd0f-0b44-4a3c-9983-da9a74532f23/bin/utaipan-verify-QoSU8krkJ5 --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 449d552a97f801da54ed90777e1477523d6fe1962bd976a4f73c924025a5f144 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-527bcce [2023-11-21 19:54:56,368 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-21 19:54:56,547 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f30cd0f-0b44-4a3c-9983-da9a74532f23/bin/utaipan-verify-QoSU8krkJ5/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2023-11-21 19:54:56,557 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-21 19:54:56,558 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-21 19:54:56,610 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-21 19:54:56,611 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-21 19:54:56,612 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-21 19:54:56,613 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-21 19:54:56,619 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-21 19:54:56,620 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-21 19:54:56,620 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-21 19:54:56,621 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-21 19:54:56,623 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-21 19:54:56,623 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-21 19:54:56,624 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-21 19:54:56,625 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-21 19:54:56,625 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-21 19:54:56,626 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-21 19:54:56,626 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-21 19:54:56,627 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-21 19:54:56,627 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-21 19:54:56,628 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-21 19:54:56,628 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-21 19:54:56,629 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-21 19:54:56,629 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-21 19:54:56,629 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-21 19:54:56,630 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-21 19:54:56,630 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-21 19:54:56,631 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-21 19:54:56,632 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-21 19:54:56,633 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 19:54:56,633 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-21 19:54:56,633 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-21 19:54:56,634 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-21 19:54:56,634 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-11-21 19:54:56,634 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-21 19:54:56,634 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-21 19:54:56,635 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-21 19:54:56,636 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-21 19:54:56,636 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-21 19:54:56,636 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_7f30cd0f-0b44-4a3c-9983-da9a74532f23/bin/utaipan-verify-QoSU8krkJ5/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f30cd0f-0b44-4a3c-9983-da9a74532f23/bin/utaipan-verify-QoSU8krkJ5 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 449d552a97f801da54ed90777e1477523d6fe1962bd976a4f73c924025a5f144 [2023-11-21 19:54:57,194 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-21 19:54:57,236 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-21 19:54:57,240 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-21 19:54:57,242 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-21 19:54:57,242 INFO L274 PluginConnector]: CDTParser initialized [2023-11-21 19:54:57,244 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f30cd0f-0b44-4a3c-9983-da9a74532f23/bin/utaipan-verify-QoSU8krkJ5/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.eq_sdp_v3.c [2023-11-21 19:55:01,255 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-21 19:55:01,621 INFO L384 CDTParser]: Found 1 translation units. [2023-11-21 19:55:01,622 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f30cd0f-0b44-4a3c-9983-da9a74532f23/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.eq_sdp_v3.c [2023-11-21 19:55:01,636 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f30cd0f-0b44-4a3c-9983-da9a74532f23/bin/utaipan-verify-QoSU8krkJ5/data/50af33471/7b56055870d54550bc77447aa43464a4/FLAGad3a796e1 [2023-11-21 19:55:01,654 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f30cd0f-0b44-4a3c-9983-da9a74532f23/bin/utaipan-verify-QoSU8krkJ5/data/50af33471/7b56055870d54550bc77447aa43464a4 [2023-11-21 19:55:01,656 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-21 19:55:01,658 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-21 19:55:01,660 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-21 19:55:01,660 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-21 19:55:01,666 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-21 19:55:01,666 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 07:55:01" (1/1) ... [2023-11-21 19:55:01,668 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d5a0de5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:55:01, skipping insertion in model container [2023-11-21 19:55:01,668 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 07:55:01" (1/1) ... [2023-11-21 19:55:01,708 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 19:55:01,898 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_7f30cd0f-0b44-4a3c-9983-da9a74532f23/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.eq_sdp_v3.c[1249,1262] [2023-11-21 19:55:01,993 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 19:55:02,011 INFO L202 MainTranslator]: Completed pre-run [2023-11-21 19:55:02,029 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_7f30cd0f-0b44-4a3c-9983-da9a74532f23/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.eq_sdp_v3.c[1249,1262] [2023-11-21 19:55:02,102 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 19:55:02,130 INFO L206 MainTranslator]: Completed translation [2023-11-21 19:55:02,131 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:55:02 WrapperNode [2023-11-21 19:55:02,131 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-21 19:55:02,133 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-21 19:55:02,133 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-21 19:55:02,134 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-21 19:55:02,144 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:55:02" (1/1) ... [2023-11-21 19:55:02,163 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:55:02" (1/1) ... [2023-11-21 19:55:02,215 INFO L138 Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 254 [2023-11-21 19:55:02,216 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-21 19:55:02,217 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-21 19:55:02,217 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-21 19:55:02,218 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-21 19:55:02,230 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:55:02" (1/1) ... [2023-11-21 19:55:02,231 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:55:02" (1/1) ... [2023-11-21 19:55:02,239 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:55:02" (1/1) ... [2023-11-21 19:55:02,240 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:55:02" (1/1) ... [2023-11-21 19:55:02,253 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:55:02" (1/1) ... [2023-11-21 19:55:02,258 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:55:02" (1/1) ... [2023-11-21 19:55:02,262 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:55:02" (1/1) ... [2023-11-21 19:55:02,265 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:55:02" (1/1) ... [2023-11-21 19:55:02,271 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-21 19:55:02,272 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-21 19:55:02,273 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-21 19:55:02,273 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-21 19:55:02,274 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:55:02" (1/1) ... [2023-11-21 19:55:02,282 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 19:55:02,302 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f30cd0f-0b44-4a3c-9983-da9a74532f23/bin/utaipan-verify-QoSU8krkJ5/z3 [2023-11-21 19:55:02,335 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f30cd0f-0b44-4a3c-9983-da9a74532f23/bin/utaipan-verify-QoSU8krkJ5/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-21 19:55:02,360 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f30cd0f-0b44-4a3c-9983-da9a74532f23/bin/utaipan-verify-QoSU8krkJ5/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-21 19:55:02,399 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-21 19:55:02,399 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-21 19:55:02,400 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-21 19:55:02,400 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-21 19:55:02,624 INFO L240 CfgBuilder]: Building ICFG [2023-11-21 19:55:02,629 INFO L266 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-21 19:55:03,133 INFO L281 CfgBuilder]: Performing block encoding [2023-11-21 19:55:03,193 INFO L303 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-21 19:55:03,194 INFO L308 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-21 19:55:03,195 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 07:55:03 BoogieIcfgContainer [2023-11-21 19:55:03,196 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-21 19:55:03,199 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-21 19:55:03,199 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-21 19:55:03,203 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-21 19:55:03,203 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 07:55:01" (1/3) ... [2023-11-21 19:55:03,204 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49e11d64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 07:55:03, skipping insertion in model container [2023-11-21 19:55:03,204 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:55:02" (2/3) ... [2023-11-21 19:55:03,205 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49e11d64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 07:55:03, skipping insertion in model container [2023-11-21 19:55:03,205 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 07:55:03" (3/3) ... [2023-11-21 19:55:03,207 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.eq_sdp_v3.c [2023-11-21 19:55:03,226 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-21 19:55:03,226 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-21 19:55:03,282 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-21 19:55:03,291 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;@6cab1963, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-21 19:55:03,291 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-21 19:55:03,296 INFO L276 IsEmpty]: Start isEmpty. Operand has 7 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:55:03,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-11-21 19:55:03,303 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:55:03,304 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-11-21 19:55:03,305 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 19:55:03,311 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:55:03,311 INFO L85 PathProgramCache]: Analyzing trace with hash 1827279, now seen corresponding path program 1 times [2023-11-21 19:55:03,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-21 19:55:03,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1061320973] [2023-11-21 19:55:03,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:55:03,327 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 [2023-11-21 19:55:03,327 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f30cd0f-0b44-4a3c-9983-da9a74532f23/bin/utaipan-verify-QoSU8krkJ5/mathsat [2023-11-21 19:55:03,333 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f30cd0f-0b44-4a3c-9983-da9a74532f23/bin/utaipan-verify-QoSU8krkJ5/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) [2023-11-21 19:55:03,338 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f30cd0f-0b44-4a3c-9983-da9a74532f23/bin/utaipan-verify-QoSU8krkJ5/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 [2023-11-21 19:55:03,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:55:03,512 INFO L262 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-21 19:55:03,520 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 19:55:03,839 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 19:55:03,840 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 19:55:03,840 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-21 19:55:03,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1061320973] [2023-11-21 19:55:03,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1061320973] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:55:03,842 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 19:55:03,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-21 19:55:03,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475371952] [2023-11-21 19:55:03,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:55:03,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-21 19:55:03,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-21 19:55:03,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-21 19:55:03,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-21 19:55:03,921 INFO L87 Difference]: Start difference. First operand has 7 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:55:04,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:55:04,008 INFO L93 Difference]: Finished difference Result 15 states and 20 transitions. [2023-11-21 19:55:04,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-21 19:55:04,012 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2023-11-21 19:55:04,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:55:04,021 INFO L225 Difference]: With dead ends: 15 [2023-11-21 19:55:04,021 INFO L226 Difference]: Without dead ends: 9 [2023-11-21 19:55:04,024 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-21 19:55:04,029 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 3 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-21 19:55:04,031 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 6 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-21 19:55:04,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2023-11-21 19:55:04,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 8. [2023-11-21 19:55:04,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:55:04,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2023-11-21 19:55:04,073 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 4 [2023-11-21 19:55:04,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:55:04,073 INFO L495 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2023-11-21 19:55:04,074 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:55:04,074 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2023-11-21 19:55:04,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-21 19:55:04,074 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:55:04,075 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1] [2023-11-21 19:55:04,084 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f30cd0f-0b44-4a3c-9983-da9a74532f23/bin/utaipan-verify-QoSU8krkJ5/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 [2023-11-21 19:55:04,283 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f30cd0f-0b44-4a3c-9983-da9a74532f23/bin/utaipan-verify-QoSU8krkJ5/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 [2023-11-21 19:55:04,284 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 19:55:04,284 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:55:04,284 INFO L85 PathProgramCache]: Analyzing trace with hash -1393329571, now seen corresponding path program 1 times [2023-11-21 19:55:04,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-21 19:55:04,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [166414899] [2023-11-21 19:55:04,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:55:04,287 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 [2023-11-21 19:55:04,287 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f30cd0f-0b44-4a3c-9983-da9a74532f23/bin/utaipan-verify-QoSU8krkJ5/mathsat [2023-11-21 19:55:04,289 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f30cd0f-0b44-4a3c-9983-da9a74532f23/bin/utaipan-verify-QoSU8krkJ5/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) [2023-11-21 19:55:04,291 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f30cd0f-0b44-4a3c-9983-da9a74532f23/bin/utaipan-verify-QoSU8krkJ5/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 [2023-11-21 19:55:04,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:55:04,556 INFO L262 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 48 conjunts are in the unsatisfiable core [2023-11-21 19:55:04,562 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 19:55:05,288 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 19:55:05,288 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 19:55:08,714 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 19:55:08,714 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-21 19:55:08,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [166414899] [2023-11-21 19:55:08,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [166414899] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-21 19:55:08,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [44476482] [2023-11-21 19:55:08,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:55:08,715 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-21 19:55:08,716 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f30cd0f-0b44-4a3c-9983-da9a74532f23/bin/utaipan-verify-QoSU8krkJ5/cvc4 [2023-11-21 19:55:08,723 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f30cd0f-0b44-4a3c-9983-da9a74532f23/bin/utaipan-verify-QoSU8krkJ5/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-21 19:55:08,756 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f30cd0f-0b44-4a3c-9983-da9a74532f23/bin/utaipan-verify-QoSU8krkJ5/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2023-11-21 19:55:08,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:55:09,007 INFO L262 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 67 conjunts are in the unsatisfiable core [2023-11-21 19:55:09,013 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 19:55:10,656 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 19:55:10,656 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 19:55:17,834 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 19:55:17,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [44476482] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-21 19:55:17,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2065679549] [2023-11-21 19:55:17,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:55:17,835 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 19:55:17,836 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f30cd0f-0b44-4a3c-9983-da9a74532f23/bin/utaipan-verify-QoSU8krkJ5/z3 [2023-11-21 19:55:17,838 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f30cd0f-0b44-4a3c-9983-da9a74532f23/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 19:55:17,864 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f30cd0f-0b44-4a3c-9983-da9a74532f23/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-21 19:55:17,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:55:17,991 INFO L262 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 41 conjunts are in the unsatisfiable core [2023-11-21 19:55:17,995 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 19:55:20,652 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 19:55:20,652 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 19:55:35,696 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 19:55:35,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2065679549] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-21 19:55:35,697 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2023-11-21 19:55:35,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5, 5] total 15 [2023-11-21 19:55:35,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218264935] [2023-11-21 19:55:35,699 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2023-11-21 19:55:35,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-21 19:55:35,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-21 19:55:35,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-21 19:55:35,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=167, Unknown=3, NotChecked=0, Total=240 [2023-11-21 19:55:35,703 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand has 16 states, 16 states have (on average 1.5625) internal successors, (25), 15 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:55:37,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:55:37,463 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2023-11-21 19:55:37,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-21 19:55:37,464 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.5625) internal successors, (25), 15 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2023-11-21 19:55:37,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:55:37,465 INFO L225 Difference]: With dead ends: 14 [2023-11-21 19:55:37,465 INFO L226 Difference]: Without dead ends: 12 [2023-11-21 19:55:37,466 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 18 SyntacticMatches, 4 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 21.8s TimeCoverageRelationStatistics Valid=93, Invalid=210, Unknown=3, NotChecked=0, Total=306 [2023-11-21 19:55:37,468 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 12 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-21 19:55:37,469 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 12 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-21 19:55:37,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2023-11-21 19:55:37,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 11. [2023-11-21 19:55:37,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 1.1) internal successors, (11), 10 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:55:37,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2023-11-21 19:55:37,477 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 7 [2023-11-21 19:55:37,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:55:37,478 INFO L495 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2023-11-21 19:55:37,478 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.5625) internal successors, (25), 15 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:55:37,478 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2023-11-21 19:55:37,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-21 19:55:37,479 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:55:37,480 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1] [2023-11-21 19:55:37,484 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f30cd0f-0b44-4a3c-9983-da9a74532f23/bin/utaipan-verify-QoSU8krkJ5/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)] Ended with exit code 0 [2023-11-21 19:55:37,696 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f30cd0f-0b44-4a3c-9983-da9a74532f23/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-21 19:55:37,885 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f30cd0f-0b44-4a3c-9983-da9a74532f23/bin/utaipan-verify-QoSU8krkJ5/cvc4 --incremental --print-success --lang smt (4)] Forceful destruction successful, exit code 0 [2023-11-21 19:55:38,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f30cd0f-0b44-4a3c-9983-da9a74532f23/bin/utaipan-verify-QoSU8krkJ5/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f30cd0f-0b44-4a3c-9983-da9a74532f23/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f30cd0f-0b44-4a3c-9983-da9a74532f23/bin/utaipan-verify-QoSU8krkJ5/cvc4 --incremental --print-success --lang smt [2023-11-21 19:55:38,083 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 19:55:38,084 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:55:38,084 INFO L85 PathProgramCache]: Analyzing trace with hash -2112524529, now seen corresponding path program 2 times [2023-11-21 19:55:38,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-21 19:55:38,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [253674154] [2023-11-21 19:55:38,085 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-21 19:55:38,086 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 [2023-11-21 19:55:38,086 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f30cd0f-0b44-4a3c-9983-da9a74532f23/bin/utaipan-verify-QoSU8krkJ5/mathsat [2023-11-21 19:55:38,087 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f30cd0f-0b44-4a3c-9983-da9a74532f23/bin/utaipan-verify-QoSU8krkJ5/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) [2023-11-21 19:55:38,089 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f30cd0f-0b44-4a3c-9983-da9a74532f23/bin/utaipan-verify-QoSU8krkJ5/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-11-21 19:55:38,322 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-21 19:55:38,323 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-21 19:55:38,329 INFO L262 TraceCheckSpWp]: Trace formula consists of 329 conjuncts, 74 conjunts are in the unsatisfiable core [2023-11-21 19:55:38,334 INFO L285 TraceCheckSpWp]: Computing forward predicates...