./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.diagonal.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9bd2c7ff 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_b90a1d20-d79a-4a25-b830-a7e9b7356897/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b90a1d20-d79a-4a25-b830-a7e9b7356897/bin/utaipan-verify-t7M7D8N6sZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b90a1d20-d79a-4a25-b830-a7e9b7356897/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b90a1d20-d79a-4a25-b830-a7e9b7356897/bin/utaipan-verify-t7M7D8N6sZ/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.diagonal.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b90a1d20-d79a-4a25-b830-a7e9b7356897/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b90a1d20-d79a-4a25-b830-a7e9b7356897/bin/utaipan-verify-t7M7D8N6sZ --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 16f8726a4add15d0bf2494bd44888be53eb7bc01110882b6fc03ef148c6d9055 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 05:24:13,704 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 05:24:13,821 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b90a1d20-d79a-4a25-b830-a7e9b7356897/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-11-19 05:24:13,838 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 05:24:13,839 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 05:24:13,878 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 05:24:13,879 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 05:24:13,880 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 05:24:13,881 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 05:24:13,886 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 05:24:13,886 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 05:24:13,888 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 05:24:13,888 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 05:24:13,890 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-19 05:24:13,890 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 05:24:13,891 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 05:24:13,891 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-19 05:24:13,892 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-19 05:24:13,892 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 05:24:13,893 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-19 05:24:13,893 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-19 05:24:13,894 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-19 05:24:13,895 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 05:24:13,896 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 05:24:13,896 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 05:24:13,897 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 05:24:13,897 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 05:24:13,898 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 05:24:13,898 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 05:24:13,899 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 05:24:13,900 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 05:24:13,900 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 05:24:13,901 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 05:24:13,901 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:24:13,901 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 05:24:13,902 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 05:24:13,902 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 05:24:13,902 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-19 05:24:13,902 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 05:24:13,903 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 05:24:13,903 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 05:24:13,903 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 05:24:13,904 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_b90a1d20-d79a-4a25-b830-a7e9b7356897/bin/utaipan-verify-t7M7D8N6sZ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b90a1d20-d79a-4a25-b830-a7e9b7356897/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 16f8726a4add15d0bf2494bd44888be53eb7bc01110882b6fc03ef148c6d9055 [2023-11-19 05:24:14,244 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 05:24:14,293 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 05:24:14,296 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 05:24:14,318 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 05:24:14,319 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 05:24:14,320 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b90a1d20-d79a-4a25-b830-a7e9b7356897/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.diagonal.c [2023-11-19 05:24:17,394 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 05:24:17,597 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 05:24:17,598 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b90a1d20-d79a-4a25-b830-a7e9b7356897/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.diagonal.c [2023-11-19 05:24:17,612 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b90a1d20-d79a-4a25-b830-a7e9b7356897/bin/utaipan-verify-t7M7D8N6sZ/data/1f72b432a/3379193009ea401c9f42208299d08b68/FLAG54097c715 [2023-11-19 05:24:17,625 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b90a1d20-d79a-4a25-b830-a7e9b7356897/bin/utaipan-verify-t7M7D8N6sZ/data/1f72b432a/3379193009ea401c9f42208299d08b68 [2023-11-19 05:24:17,628 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 05:24:17,630 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 05:24:17,631 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 05:24:17,631 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 05:24:17,640 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 05:24:17,641 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:24:17" (1/1) ... [2023-11-19 05:24:17,643 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@740c4d8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:24:17, skipping insertion in model container [2023-11-19 05:24:17,644 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:24:17" (1/1) ... [2023-11-19 05:24:17,682 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 05:24:17,908 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_b90a1d20-d79a-4a25-b830-a7e9b7356897/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.diagonal.c[1248,1261] [2023-11-19 05:24:18,029 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:24:18,051 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 05:24:18,068 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_b90a1d20-d79a-4a25-b830-a7e9b7356897/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.diagonal.c[1248,1261] [2023-11-19 05:24:18,113 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:24:18,132 INFO L206 MainTranslator]: Completed translation [2023-11-19 05:24:18,133 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:24:18 WrapperNode [2023-11-19 05:24:18,133 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 05:24:18,134 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 05:24:18,134 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 05:24:18,135 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 05:24:18,141 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:24:18" (1/1) ... [2023-11-19 05:24:18,153 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:24:18" (1/1) ... [2023-11-19 05:24:18,222 INFO L138 Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 292 [2023-11-19 05:24:18,222 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 05:24:18,223 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 05:24:18,223 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 05:24:18,223 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 05:24:18,233 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:24:18" (1/1) ... [2023-11-19 05:24:18,234 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:24:18" (1/1) ... [2023-11-19 05:24:18,242 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:24:18" (1/1) ... [2023-11-19 05:24:18,245 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:24:18" (1/1) ... [2023-11-19 05:24:18,263 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:24:18" (1/1) ... [2023-11-19 05:24:18,267 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:24:18" (1/1) ... [2023-11-19 05:24:18,282 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:24:18" (1/1) ... [2023-11-19 05:24:18,287 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:24:18" (1/1) ... [2023-11-19 05:24:18,303 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 05:24:18,304 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 05:24:18,304 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 05:24:18,304 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 05:24:18,305 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:24:18" (1/1) ... [2023-11-19 05:24:18,312 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:24:18,326 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b90a1d20-d79a-4a25-b830-a7e9b7356897/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:24:18,341 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b90a1d20-d79a-4a25-b830-a7e9b7356897/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 05:24:18,363 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b90a1d20-d79a-4a25-b830-a7e9b7356897/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 05:24:18,385 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 05:24:18,385 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 05:24:18,385 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 05:24:18,385 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 05:24:18,536 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 05:24:18,538 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 05:24:19,176 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 05:24:19,649 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 05:24:19,650 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-19 05:24:19,655 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:24:19 BoogieIcfgContainer [2023-11-19 05:24:19,656 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 05:24:19,660 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 05:24:19,661 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 05:24:19,664 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 05:24:19,665 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 05:24:17" (1/3) ... [2023-11-19 05:24:19,665 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1be806b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:24:19, skipping insertion in model container [2023-11-19 05:24:19,666 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:24:18" (2/3) ... [2023-11-19 05:24:19,667 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1be806b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:24:19, skipping insertion in model container [2023-11-19 05:24:19,667 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:24:19" (3/3) ... [2023-11-19 05:24:19,669 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.diagonal.c [2023-11-19 05:24:19,691 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 05:24:19,691 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-19 05:24:19,758 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 05:24:19,768 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;@66a8c1f6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-19 05:24:19,769 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-19 05:24:19,773 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) [2023-11-19 05:24:19,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-11-19 05:24:19,781 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:24:19,782 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-11-19 05:24:19,782 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:24:19,791 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:24:19,792 INFO L85 PathProgramCache]: Analyzing trace with hash 9844516, now seen corresponding path program 1 times [2023-11-19 05:24:19,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:24:19,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916858817] [2023-11-19 05:24:19,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:24:19,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:24:20,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:24:20,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:24:20,866 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:24:20,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916858817] [2023-11-19 05:24:20,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [916858817] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:24:20,867 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:24:20,868 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 05:24:20,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558981353] [2023-11-19 05:24:20,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:24:20,875 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 05:24:20,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:24:20,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 05:24:20,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 05:24:20,919 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) [2023-11-19 05:24:21,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:24:21,095 INFO L93 Difference]: Finished difference Result 15 states and 20 transitions. [2023-11-19 05:24:21,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 05:24:21,099 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 [2023-11-19 05:24:21,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:24:21,107 INFO L225 Difference]: With dead ends: 15 [2023-11-19 05:24:21,108 INFO L226 Difference]: Without dead ends: 9 [2023-11-19 05:24:21,111 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 [2023-11-19 05:24:21,116 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 3 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 05:24:21,118 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 6 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 05:24:21,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2023-11-19 05:24:21,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 8. [2023-11-19 05:24:21,152 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) [2023-11-19 05:24:21,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2023-11-19 05:24:21,154 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 4 [2023-11-19 05:24:21,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:24:21,155 INFO L495 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2023-11-19 05:24:21,156 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) [2023-11-19 05:24:21,156 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2023-11-19 05:24:21,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-19 05:24:21,156 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:24:21,157 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1] [2023-11-19 05:24:21,157 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 05:24:21,157 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:24:21,158 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:24:21,158 INFO L85 PathProgramCache]: Analyzing trace with hash 1231623467, now seen corresponding path program 1 times [2023-11-19 05:24:21,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:24:21,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213505556] [2023-11-19 05:24:21,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:24:21,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:24:21,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 05:24:21,948 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 05:24:22,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 05:24:22,686 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-11-19 05:24:22,687 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-19 05:24:22,689 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-19 05:24:22,692 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 05:24:22,696 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-11-19 05:24:22,701 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-19 05:24:22,753 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2023-11-19 05:24:22,754 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2023-11-19 05:24:22,781 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 05:24:22 BoogieIcfgContainer [2023-11-19 05:24:22,784 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-19 05:24:22,784 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-19 05:24:22,785 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-19 05:24:22,786 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-19 05:24:22,787 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:24:19" (3/4) ... [2023-11-19 05:24:22,790 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-19 05:24:22,791 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-19 05:24:22,792 INFO L158 Benchmark]: Toolchain (without parser) took 5162.57ms. Allocated memory was 134.2MB in the beginning and 207.6MB in the end (delta: 73.4MB). Free memory was 67.8MB in the beginning and 136.9MB in the end (delta: -69.2MB). Peak memory consumption was 6.8MB. Max. memory is 16.1GB. [2023-11-19 05:24:22,794 INFO L158 Benchmark]: CDTParser took 0.24ms. Allocated memory is still 134.2MB. Free memory is still 108.4MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 05:24:22,797 INFO L158 Benchmark]: CACSL2BoogieTranslator took 502.25ms. Allocated memory was 134.2MB in the beginning and 172.0MB in the end (delta: 37.7MB). Free memory was 67.6MB in the beginning and 137.6MB in the end (delta: -70.0MB). Peak memory consumption was 9.9MB. Max. memory is 16.1GB. [2023-11-19 05:24:22,799 INFO L158 Benchmark]: Boogie Procedure Inliner took 88.05ms. Allocated memory is still 172.0MB. Free memory was 137.6MB in the beginning and 131.3MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2023-11-19 05:24:22,802 INFO L158 Benchmark]: Boogie Preprocessor took 79.86ms. Allocated memory is still 172.0MB. Free memory was 131.3MB in the beginning and 128.6MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 05:24:22,803 INFO L158 Benchmark]: RCFGBuilder took 1353.04ms. Allocated memory is still 172.0MB. Free memory was 128.6MB in the beginning and 117.7MB in the end (delta: 10.9MB). Peak memory consumption was 64.2MB. Max. memory is 16.1GB. [2023-11-19 05:24:22,804 INFO L158 Benchmark]: TraceAbstraction took 3123.92ms. Allocated memory was 172.0MB in the beginning and 207.6MB in the end (delta: 35.7MB). Free memory was 116.8MB in the beginning and 136.9MB in the end (delta: -20.1MB). Peak memory consumption was 89.3MB. Max. memory is 16.1GB. [2023-11-19 05:24:22,804 INFO L158 Benchmark]: Witness Printer took 7.09ms. Allocated memory is still 207.6MB. Free memory is still 136.9MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 05:24:22,812 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24ms. Allocated memory is still 134.2MB. Free memory is still 108.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 502.25ms. Allocated memory was 134.2MB in the beginning and 172.0MB in the end (delta: 37.7MB). Free memory was 67.6MB in the beginning and 137.6MB in the end (delta: -70.0MB). Peak memory consumption was 9.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 88.05ms. Allocated memory is still 172.0MB. Free memory was 137.6MB in the beginning and 131.3MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Preprocessor took 79.86ms. Allocated memory is still 172.0MB. Free memory was 131.3MB in the beginning and 128.6MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 1353.04ms. Allocated memory is still 172.0MB. Free memory was 128.6MB in the beginning and 117.7MB in the end (delta: 10.9MB). Peak memory consumption was 64.2MB. Max. memory is 16.1GB. * TraceAbstraction took 3123.92ms. Allocated memory was 172.0MB in the beginning and 207.6MB in the end (delta: 35.7MB). Free memory was 116.8MB in the beginning and 136.9MB in the end (delta: -20.1MB). Peak memory consumption was 89.3MB. Max. memory is 16.1GB. * Witness Printer took 7.09ms. Allocated memory is still 207.6MB. Free memory is still 136.9MB. 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 shiftRight at line 78, overapproximation of bitwiseOr at line 96, overapproximation of bitwiseAnd at line 62. 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_4 mask_SORT_4 = (SORT_4)-1 >> (sizeof(SORT_4) * 8 - 4); [L30] const SORT_4 msb_SORT_4 = (SORT_4)1 << (4 - 1); [L32] const SORT_4 var_5 = 0; [L33] const SORT_1 var_14 = 1; [L34] const SORT_4 var_19 = 1; [L35] const SORT_4 var_22 = 15; [L37] SORT_1 input_2; [L38] SORT_1 input_3; [L40] EXPR __VERIFIER_nondet_uchar() & mask_SORT_4 [L40] SORT_4 state_6 = __VERIFIER_nondet_uchar() & mask_SORT_4; [L41] EXPR __VERIFIER_nondet_uchar() & mask_SORT_4 [L41] SORT_4 state_8 = __VERIFIER_nondet_uchar() & mask_SORT_4; [L43] SORT_4 init_7_arg_1 = var_5; [L44] state_6 = init_7_arg_1 [L45] SORT_4 init_9_arg_1 = var_5; [L46] state_8 = init_9_arg_1 VAL [init_7_arg_1=0, init_9_arg_1=0, mask_SORT_1=1, mask_SORT_4=15, msb_SORT_1=1, msb_SORT_4=8, state_6=0, state_8=0, var_14=1, var_19=1, var_22=15, var_5=0] [L49] input_2 = __VERIFIER_nondet_uchar() [L50] input_3 = __VERIFIER_nondet_uchar() [L53] SORT_4 var_10_arg_0 = state_6; [L54] SORT_4 var_10_arg_1 = state_8; [L55] SORT_1 var_10 = var_10_arg_0 < var_10_arg_1; [L56] SORT_1 var_11_arg_0 = var_10; [L57] SORT_1 var_11 = ~var_11_arg_0; [L58] SORT_1 var_15_arg_0 = var_11; [L59] SORT_1 var_15 = ~var_15_arg_0; [L60] SORT_1 var_16_arg_0 = var_14; [L61] SORT_1 var_16_arg_1 = var_15; [L62] EXPR var_16_arg_0 & var_16_arg_1 [L62] SORT_1 var_16 = var_16_arg_0 & var_16_arg_1; [L63] EXPR var_16 & mask_SORT_1 [L63] var_16 = var_16 & mask_SORT_1 [L64] SORT_1 bad_17_arg_0 = var_16; [L65] CALL __VERIFIER_assert(!(bad_17_arg_0)) [L21] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1] [L65] RET __VERIFIER_assert(!(bad_17_arg_0)) [L67] SORT_1 var_31_arg_0 = input_3; [L68] SORT_1 var_31 = ~var_31_arg_0; [L69] SORT_4 var_32_arg_0 = state_6; [L70] SORT_4 var_32_arg_1 = state_8; [L71] SORT_1 var_32 = var_32_arg_0 > var_32_arg_1; [L72] SORT_1 var_33_arg_0 = var_31; [L73] SORT_1 var_33_arg_1 = var_32; [L74] EXPR var_33_arg_0 & var_33_arg_1 [L74] SORT_1 var_33 = var_33_arg_0 & var_33_arg_1; [L75] EXPR var_33 & mask_SORT_1 [L75] var_33 = var_33 & mask_SORT_1 [L76] SORT_4 var_28_arg_0 = var_22; [L77] SORT_4 var_28_arg_1 = var_19; [L78] EXPR var_28_arg_0 >> var_28_arg_1 [L78] SORT_4 var_28 = var_28_arg_0 >> var_28_arg_1; [L79] SORT_4 var_29_arg_0 = state_6; [L80] SORT_4 var_29_arg_1 = var_19; [L81] EXPR var_29_arg_0 >> var_29_arg_1 [L81] SORT_4 var_29 = var_29_arg_0 >> var_29_arg_1; [L82] SORT_4 var_30_arg_0 = var_28; [L83] SORT_4 var_30_arg_1 = var_29; [L84] SORT_4 var_30 = var_30_arg_0 + var_30_arg_1; [L85] SORT_4 var_26_arg_0 = state_6; [L86] SORT_4 var_26_arg_1 = state_8; [L87] SORT_1 var_26 = var_26_arg_0 < var_26_arg_1; [L88] SORT_4 var_21_arg_0 = state_8; [L89] SORT_4 var_21_arg_1 = state_6; [L90] SORT_1 var_21 = var_21_arg_0 == var_21_arg_1; [L91] SORT_4 var_23_arg_0 = state_6; [L92] SORT_4 var_23_arg_1 = var_22; [L93] SORT_1 var_23 = var_23_arg_0 != var_23_arg_1; [L94] SORT_1 var_24_arg_0 = var_21; [L95] SORT_1 var_24_arg_1 = var_23; [L96] EXPR var_24_arg_0 | var_24_arg_1 [L96] SORT_1 var_24 = var_24_arg_0 | var_24_arg_1; [L97] EXPR var_24 & mask_SORT_1 [L97] var_24 = var_24 & mask_SORT_1 [L98] SORT_4 var_20_arg_0 = state_6; [L99] SORT_4 var_20_arg_1 = var_19; [L100] SORT_4 var_20 = var_20_arg_0 + var_20_arg_1; [L101] SORT_1 var_25_arg_0 = var_24; [L102] SORT_4 var_25_arg_1 = var_20; [L103] SORT_4 var_25_arg_2 = state_8; [L104] SORT_4 var_25 = var_25_arg_0 ? var_25_arg_1 : var_25_arg_2; [L105] SORT_1 var_27_arg_0 = var_26; [L106] SORT_4 var_27_arg_1 = state_6; [L107] SORT_4 var_27_arg_2 = var_25; [L108] SORT_4 var_27 = var_27_arg_0 ? var_27_arg_1 : var_27_arg_2; [L109] SORT_1 var_34_arg_0 = var_33; [L110] SORT_4 var_34_arg_1 = var_30; [L111] SORT_4 var_34_arg_2 = var_27; [L112] SORT_4 var_34 = var_34_arg_0 ? var_34_arg_1 : var_34_arg_2; [L113] EXPR var_34 & mask_SORT_4 [L113] var_34 = var_34 & mask_SORT_4 [L114] SORT_4 next_35_arg_1 = var_34; [L115] SORT_1 var_42_arg_0 = input_3; [L116] SORT_1 var_42 = ~var_42_arg_0; [L117] SORT_4 var_43_arg_0 = state_6; [L118] SORT_4 var_43_arg_1 = state_8; [L119] SORT_1 var_43 = var_43_arg_0 > var_43_arg_1; [L120] SORT_1 var_44_arg_0 = var_42; [L121] SORT_1 var_44_arg_1 = var_43; [L122] EXPR var_44_arg_0 & var_44_arg_1 [L122] SORT_1 var_44 = var_44_arg_0 & var_44_arg_1; [L123] EXPR var_44 & mask_SORT_1 [L123] var_44 = var_44 & mask_SORT_1 [L124] SORT_4 var_37_arg_0 = state_6; [L125] SORT_4 var_37_arg_1 = state_8; [L126] SORT_1 var_37 = var_37_arg_0 > var_37_arg_1; [L127] SORT_1 var_38_arg_0 = var_37; [L128] SORT_1 var_38 = ~var_38_arg_0; [L129] SORT_4 var_39_arg_0 = state_6; [L130] SORT_4 var_39_arg_1 = var_22; [L131] SORT_1 var_39 = var_39_arg_0 != var_39_arg_1; [L132] SORT_1 var_40_arg_0 = var_38; [L133] SORT_1 var_40_arg_1 = var_39; [L134] EXPR var_40_arg_0 | var_40_arg_1 [L134] SORT_1 var_40 = var_40_arg_0 | var_40_arg_1; [L135] EXPR var_40 & mask_SORT_1 [L135] var_40 = var_40 & mask_SORT_1 [L136] SORT_4 var_36_arg_0 = state_8; [L137] SORT_4 var_36_arg_1 = var_19; [L138] SORT_4 var_36 = var_36_arg_0 + var_36_arg_1; [L139] SORT_1 var_41_arg_0 = var_40; [L140] SORT_4 var_41_arg_1 = var_36; [L141] SORT_4 var_41_arg_2 = state_6; [L142] SORT_4 var_41 = var_41_arg_0 ? var_41_arg_1 : var_41_arg_2; [L143] SORT_1 var_45_arg_0 = var_44; [L144] SORT_4 var_45_arg_1 = state_8; [L145] SORT_4 var_45_arg_2 = var_41; [L146] SORT_4 var_45 = var_45_arg_0 ? var_45_arg_1 : var_45_arg_2; [L147] EXPR var_45 & mask_SORT_4 [L147] var_45 = var_45 & mask_SORT_4 [L148] SORT_4 next_46_arg_1 = var_45; [L150] state_6 = next_35_arg_1 [L151] state_8 = next_46_arg_1 VAL [bad_17_arg_0=0, init_7_arg_1=0, init_9_arg_1=0, input_3=255, mask_SORT_1=1, mask_SORT_4=15, msb_SORT_1=1, msb_SORT_4=8, next_35_arg_1=0, next_46_arg_1=1, state_6=0, state_8=1, var_10=0, var_10_arg_0=0, var_10_arg_1=0, var_11=255, var_11_arg_0=0, var_14=1, var_15=0, var_15_arg_0=255, var_16=0, var_16_arg_0=1, var_16_arg_1=0, var_19=1, var_20=1, var_20_arg_0=0, var_20_arg_1=1, var_21=1, var_21_arg_0=0, var_21_arg_1=0, var_22=15, var_23=1, var_23_arg_0=0, var_23_arg_1=15, var_24=1, var_24_arg_0=1, var_24_arg_1=1, var_25=1, var_25_arg_0=1, var_25_arg_1=1, var_25_arg_2=0, var_26=0, var_26_arg_0=0, var_26_arg_1=0, var_27=1, var_27_arg_0=0, var_27_arg_1=0, var_27_arg_2=1, var_28=1, var_28_arg_0=15, var_28_arg_1=1, var_29=0, var_29_arg_0=0, var_29_arg_1=1, var_30=1, var_30_arg_0=1, var_30_arg_1=0, var_31=0, var_31_arg_0=255, var_32=0, var_32_arg_0=0, var_32_arg_1=0, var_33=0, var_33_arg_0=0, var_33_arg_1=0, var_34=0, var_34_arg_0=0, var_34_arg_1=1, var_34_arg_2=1, var_36=1, var_36_arg_0=0, var_36_arg_1=1, var_37=0, var_37_arg_0=0, var_37_arg_1=0, var_38=255, var_38_arg_0=0, var_39=1, var_39_arg_0=0, var_39_arg_1=15, var_40=1, var_40_arg_0=255, var_40_arg_1=1, var_41=1, var_41_arg_0=1, var_41_arg_1=1, var_41_arg_2=0, var_42=0, var_42_arg_0=255, var_43=0, var_43_arg_0=0, var_43_arg_1=0, var_44=0, var_44_arg_0=0, var_44_arg_1=0, var_45=1, var_45_arg_0=0, var_45_arg_1=0, var_45_arg_2=1, var_5=0] [L49] input_2 = __VERIFIER_nondet_uchar() [L50] input_3 = __VERIFIER_nondet_uchar() [L53] SORT_4 var_10_arg_0 = state_6; [L54] SORT_4 var_10_arg_1 = state_8; [L55] SORT_1 var_10 = var_10_arg_0 < var_10_arg_1; [L56] SORT_1 var_11_arg_0 = var_10; [L57] SORT_1 var_11 = ~var_11_arg_0; [L58] SORT_1 var_15_arg_0 = var_11; [L59] SORT_1 var_15 = ~var_15_arg_0; [L60] SORT_1 var_16_arg_0 = var_14; [L61] SORT_1 var_16_arg_1 = var_15; [L62] EXPR var_16_arg_0 & var_16_arg_1 [L62] SORT_1 var_16 = var_16_arg_0 & var_16_arg_1; [L63] EXPR var_16 & mask_SORT_1 [L63] var_16 = var_16 & mask_SORT_1 [L64] SORT_1 bad_17_arg_0 = var_16; [L65] CALL __VERIFIER_assert(!(bad_17_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: 3.0s, OverallIterations: 2, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 3 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 3 mSDsluCounter, 6 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 4 mSDsCounter, 1 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 10 IncrementalHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1 mSolverCounterUnsat, 2 mSDtfsCounter, 10 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=8occurred in iteration=1, InterpolantAutomatonStates: 5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 11 NumberOfCodeBlocks, 11 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 3 ConstructedInterpolants, 0 QuantifiedInterpolants, 8 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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 [2023-11-19 05:24:22,850 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b90a1d20-d79a-4a25-b830-a7e9b7356897/bin/utaipan-verify-t7M7D8N6sZ/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_b90a1d20-d79a-4a25-b830-a7e9b7356897/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b90a1d20-d79a-4a25-b830-a7e9b7356897/bin/utaipan-verify-t7M7D8N6sZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b90a1d20-d79a-4a25-b830-a7e9b7356897/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b90a1d20-d79a-4a25-b830-a7e9b7356897/bin/utaipan-verify-t7M7D8N6sZ/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.diagonal.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b90a1d20-d79a-4a25-b830-a7e9b7356897/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b90a1d20-d79a-4a25-b830-a7e9b7356897/bin/utaipan-verify-t7M7D8N6sZ --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 16f8726a4add15d0bf2494bd44888be53eb7bc01110882b6fc03ef148c6d9055 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 05:24:25,673 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 05:24:25,812 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b90a1d20-d79a-4a25-b830-a7e9b7356897/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2023-11-19 05:24:25,820 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 05:24:25,821 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 05:24:25,869 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 05:24:25,870 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 05:24:25,870 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 05:24:25,871 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 05:24:25,876 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 05:24:25,877 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 05:24:25,877 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 05:24:25,878 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 05:24:25,879 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 05:24:25,880 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 05:24:25,880 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 05:24:25,882 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 05:24:25,882 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 05:24:25,882 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 05:24:25,884 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 05:24:25,884 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 05:24:25,885 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 05:24:25,885 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-19 05:24:25,885 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-19 05:24:25,886 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-19 05:24:25,886 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 05:24:25,886 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 05:24:25,887 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 05:24:25,887 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 05:24:25,888 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 05:24:25,889 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:24:25,889 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 05:24:25,890 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 05:24:25,890 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 05:24:25,890 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-11-19 05:24:25,890 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-19 05:24:25,891 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 05:24:25,891 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 05:24:25,891 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 05:24:25,892 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_b90a1d20-d79a-4a25-b830-a7e9b7356897/bin/utaipan-verify-t7M7D8N6sZ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b90a1d20-d79a-4a25-b830-a7e9b7356897/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 16f8726a4add15d0bf2494bd44888be53eb7bc01110882b6fc03ef148c6d9055 [2023-11-19 05:24:26,319 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 05:24:26,356 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 05:24:26,359 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 05:24:26,361 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 05:24:26,362 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 05:24:26,363 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b90a1d20-d79a-4a25-b830-a7e9b7356897/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.diagonal.c [2023-11-19 05:24:29,559 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 05:24:29,896 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 05:24:29,897 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b90a1d20-d79a-4a25-b830-a7e9b7356897/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.diagonal.c [2023-11-19 05:24:29,906 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b90a1d20-d79a-4a25-b830-a7e9b7356897/bin/utaipan-verify-t7M7D8N6sZ/data/6b6f7dbb1/a37adb19ed2c4bd4af1b9ae196818ad2/FLAGef1bc5fb6 [2023-11-19 05:24:29,921 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b90a1d20-d79a-4a25-b830-a7e9b7356897/bin/utaipan-verify-t7M7D8N6sZ/data/6b6f7dbb1/a37adb19ed2c4bd4af1b9ae196818ad2 [2023-11-19 05:24:29,924 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 05:24:29,925 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 05:24:29,927 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 05:24:29,927 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 05:24:29,932 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 05:24:29,933 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:24:29" (1/1) ... [2023-11-19 05:24:29,935 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@53aec699 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:24:29, skipping insertion in model container [2023-11-19 05:24:29,935 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:24:29" (1/1) ... [2023-11-19 05:24:29,963 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 05:24:30,165 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_b90a1d20-d79a-4a25-b830-a7e9b7356897/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.diagonal.c[1248,1261] [2023-11-19 05:24:30,251 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:24:30,273 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 05:24:30,292 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_b90a1d20-d79a-4a25-b830-a7e9b7356897/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.diagonal.c[1248,1261] [2023-11-19 05:24:30,333 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:24:30,361 INFO L206 MainTranslator]: Completed translation [2023-11-19 05:24:30,362 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:24:30 WrapperNode [2023-11-19 05:24:30,362 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 05:24:30,374 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 05:24:30,374 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 05:24:30,374 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 05:24:30,383 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:24:30" (1/1) ... [2023-11-19 05:24:30,435 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:24:30" (1/1) ... [2023-11-19 05:24:30,487 INFO L138 Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 144 [2023-11-19 05:24:30,488 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 05:24:30,488 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 05:24:30,490 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 05:24:30,490 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 05:24:30,501 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:24:30" (1/1) ... [2023-11-19 05:24:30,501 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:24:30" (1/1) ... [2023-11-19 05:24:30,506 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:24:30" (1/1) ... [2023-11-19 05:24:30,507 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:24:30" (1/1) ... [2023-11-19 05:24:30,515 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:24:30" (1/1) ... [2023-11-19 05:24:30,519 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:24:30" (1/1) ... [2023-11-19 05:24:30,522 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:24:30" (1/1) ... [2023-11-19 05:24:30,524 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:24:30" (1/1) ... [2023-11-19 05:24:30,528 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 05:24:30,529 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 05:24:30,529 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 05:24:30,529 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 05:24:30,530 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:24:30" (1/1) ... [2023-11-19 05:24:30,536 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:24:30,558 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b90a1d20-d79a-4a25-b830-a7e9b7356897/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:24:30,577 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b90a1d20-d79a-4a25-b830-a7e9b7356897/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 05:24:30,594 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b90a1d20-d79a-4a25-b830-a7e9b7356897/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 05:24:30,625 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 05:24:30,625 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-19 05:24:30,626 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 05:24:30,626 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 05:24:30,728 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 05:24:30,731 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 05:24:30,986 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 05:24:30,993 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 05:24:30,995 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-19 05:24:31,000 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:24:30 BoogieIcfgContainer [2023-11-19 05:24:31,000 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 05:24:31,004 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 05:24:31,004 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 05:24:31,008 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 05:24:31,010 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 05:24:29" (1/3) ... [2023-11-19 05:24:31,011 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37e3761b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:24:31, skipping insertion in model container [2023-11-19 05:24:31,011 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:24:30" (2/3) ... [2023-11-19 05:24:31,013 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37e3761b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:24:31, skipping insertion in model container [2023-11-19 05:24:31,013 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:24:30" (3/3) ... [2023-11-19 05:24:31,014 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.diagonal.c [2023-11-19 05:24:31,037 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 05:24:31,037 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-19 05:24:31,100 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 05:24:31,110 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;@4a4edb8f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-19 05:24:31,111 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-19 05:24:31,117 INFO L276 IsEmpty]: Start isEmpty. Operand has 11 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:24:31,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-19 05:24:31,125 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:24:31,125 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-19 05:24:31,126 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:24:31,134 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:24:31,135 INFO L85 PathProgramCache]: Analyzing trace with hash 28698761, now seen corresponding path program 1 times [2023-11-19 05:24:31,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 05:24:31,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [351038154] [2023-11-19 05:24:31,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:24:31,151 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 [2023-11-19 05:24:31,152 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b90a1d20-d79a-4a25-b830-a7e9b7356897/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 05:24:31,159 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b90a1d20-d79a-4a25-b830-a7e9b7356897/bin/utaipan-verify-t7M7D8N6sZ/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) [2023-11-19 05:24:31,203 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b90a1d20-d79a-4a25-b830-a7e9b7356897/bin/utaipan-verify-t7M7D8N6sZ/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 [2023-11-19 05:24:31,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:24:31,309 INFO L262 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-19 05:24:31,319 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:24:31,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:24:31,679 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:24:31,680 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 05:24:31,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [351038154] [2023-11-19 05:24:31,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [351038154] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:24:31,681 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:24:31,682 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 05:24:31,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234573838] [2023-11-19 05:24:31,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:24:31,689 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 05:24:31,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 05:24:31,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 05:24:31,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 05:24:31,736 INFO L87 Difference]: Start difference. First operand has 11 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:24:31,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:24:31,798 INFO L93 Difference]: Finished difference Result 19 states and 27 transitions. [2023-11-19 05:24:31,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 05:24:31,801 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2023-11-19 05:24:31,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:24:31,809 INFO L225 Difference]: With dead ends: 19 [2023-11-19 05:24:31,810 INFO L226 Difference]: Without dead ends: 10 [2023-11-19 05:24:31,813 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 05:24:31,817 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 3 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 05:24:31,818 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 11 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 05:24:31,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2023-11-19 05:24:31,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 9. [2023-11-19 05:24:31,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:24:31,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2023-11-19 05:24:31,853 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 5 [2023-11-19 05:24:31,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:24:31,854 INFO L495 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2023-11-19 05:24:31,854 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:24:31,854 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2023-11-19 05:24:31,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-19 05:24:31,855 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:24:31,855 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2023-11-19 05:24:31,858 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b90a1d20-d79a-4a25-b830-a7e9b7356897/bin/utaipan-verify-t7M7D8N6sZ/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)] Ended with exit code 0 [2023-11-19 05:24:32,058 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b90a1d20-d79a-4a25-b830-a7e9b7356897/bin/utaipan-verify-t7M7D8N6sZ/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 [2023-11-19 05:24:32,058 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:24:32,059 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:24:32,059 INFO L85 PathProgramCache]: Analyzing trace with hash 271073635, now seen corresponding path program 1 times [2023-11-19 05:24:32,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 05:24:32,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [359616485] [2023-11-19 05:24:32,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:24:32,062 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 [2023-11-19 05:24:32,062 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b90a1d20-d79a-4a25-b830-a7e9b7356897/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 05:24:32,063 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b90a1d20-d79a-4a25-b830-a7e9b7356897/bin/utaipan-verify-t7M7D8N6sZ/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) [2023-11-19 05:24:32,099 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b90a1d20-d79a-4a25-b830-a7e9b7356897/bin/utaipan-verify-t7M7D8N6sZ/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 [2023-11-19 05:24:32,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:24:32,235 WARN L260 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 67 conjunts are in the unsatisfiable core [2023-11-19 05:24:32,242 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:24:33,605 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:24:33,605 INFO L327 TraceCheckSpWp]: Computing backward predicates...