./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.v_DAIO.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_75df0527-acfb-4d30-99c7-a1234f61fedf/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75df0527-acfb-4d30-99c7-a1234f61fedf/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_75df0527-acfb-4d30-99c7-a1234f61fedf/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75df0527-acfb-4d30-99c7-a1234f61fedf/bin/utaipan-verify-t7M7D8N6sZ/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.v_DAIO.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75df0527-acfb-4d30-99c7-a1234f61fedf/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_75df0527-acfb-4d30-99c7-a1234f61fedf/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 a68330c23bd8fa71b4f2c1a72229a125c9c545dc64c1e4d5015a2916cb213688 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 04:14:28,061 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 04:14:28,158 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75df0527-acfb-4d30-99c7-a1234f61fedf/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-11-19 04:14:28,169 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 04:14:28,171 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 04:14:28,210 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 04:14:28,211 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 04:14:28,212 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 04:14:28,215 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 04:14:28,219 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 04:14:28,220 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 04:14:28,221 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 04:14:28,221 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 04:14:28,223 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-19 04:14:28,224 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 04:14:28,224 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 04:14:28,224 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-19 04:14:28,225 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-19 04:14:28,225 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 04:14:28,226 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-19 04:14:28,226 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-19 04:14:28,227 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-19 04:14:28,228 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 04:14:28,228 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 04:14:28,229 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 04:14:28,229 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 04:14:28,230 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 04:14:28,230 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 04:14:28,231 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 04:14:28,231 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 04:14:28,232 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 04:14:28,233 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 04:14:28,233 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 04:14:28,233 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 04:14:28,234 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 04:14:28,234 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 04:14:28,234 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 04:14:28,234 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-19 04:14:28,235 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 04:14:28,235 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 04:14:28,235 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 04:14:28,236 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 04:14:28,236 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_75df0527-acfb-4d30-99c7-a1234f61fedf/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75df0527-acfb-4d30-99c7-a1234f61fedf/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a68330c23bd8fa71b4f2c1a72229a125c9c545dc64c1e4d5015a2916cb213688 [2023-11-19 04:14:28,513 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 04:14:28,540 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 04:14:28,543 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 04:14:28,544 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 04:14:28,545 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 04:14:28,546 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75df0527-acfb-4d30-99c7-a1234f61fedf/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.v_DAIO.c [2023-11-19 04:14:31,530 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 04:14:31,824 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 04:14:31,825 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75df0527-acfb-4d30-99c7-a1234f61fedf/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.v_DAIO.c [2023-11-19 04:14:31,841 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75df0527-acfb-4d30-99c7-a1234f61fedf/bin/utaipan-verify-t7M7D8N6sZ/data/8559a429c/3df44f0ffa5b45c4b81fe195153c6074/FLAGde88630b5 [2023-11-19 04:14:31,854 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75df0527-acfb-4d30-99c7-a1234f61fedf/bin/utaipan-verify-t7M7D8N6sZ/data/8559a429c/3df44f0ffa5b45c4b81fe195153c6074 [2023-11-19 04:14:31,856 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 04:14:31,858 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 04:14:31,859 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 04:14:31,859 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 04:14:31,868 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 04:14:31,869 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:14:31" (1/1) ... [2023-11-19 04:14:31,870 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33bc32a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:14:31, skipping insertion in model container [2023-11-19 04:14:31,870 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:14:31" (1/1) ... [2023-11-19 04:14:31,934 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 04:14:32,140 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_75df0527-acfb-4d30-99c7-a1234f61fedf/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.v_DAIO.c[1246,1259] [2023-11-19 04:14:32,529 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:14:32,551 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 04:14:32,561 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_75df0527-acfb-4d30-99c7-a1234f61fedf/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.v_DAIO.c[1246,1259] [2023-11-19 04:14:32,739 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:14:32,768 INFO L206 MainTranslator]: Completed translation [2023-11-19 04:14:32,769 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:14:32 WrapperNode [2023-11-19 04:14:32,769 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 04:14:32,770 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 04:14:32,771 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 04:14:32,771 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 04:14:32,779 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:14:32" (1/1) ... [2023-11-19 04:14:32,827 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:14:32" (1/1) ... [2023-11-19 04:14:33,030 INFO L138 Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1928 [2023-11-19 04:14:33,031 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 04:14:33,031 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 04:14:33,032 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 04:14:33,032 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 04:14:33,042 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:14:32" (1/1) ... [2023-11-19 04:14:33,042 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:14:32" (1/1) ... [2023-11-19 04:14:33,068 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:14:32" (1/1) ... [2023-11-19 04:14:33,068 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:14:32" (1/1) ... [2023-11-19 04:14:33,136 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:14:32" (1/1) ... [2023-11-19 04:14:33,156 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:14:32" (1/1) ... [2023-11-19 04:14:33,181 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:14:32" (1/1) ... [2023-11-19 04:14:33,194 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:14:32" (1/1) ... [2023-11-19 04:14:33,236 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 04:14:33,237 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 04:14:33,238 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 04:14:33,238 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 04:14:33,239 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:14:32" (1/1) ... [2023-11-19 04:14:33,244 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 04:14:33,255 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75df0527-acfb-4d30-99c7-a1234f61fedf/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:14:33,268 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75df0527-acfb-4d30-99c7-a1234f61fedf/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 04:14:33,326 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75df0527-acfb-4d30-99c7-a1234f61fedf/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 04:14:33,359 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 04:14:33,359 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 04:14:33,360 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 04:14:33,360 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 04:14:33,719 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 04:14:33,721 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 04:14:35,101 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 04:14:37,898 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 04:14:37,898 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-19 04:14:37,905 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:14:37 BoogieIcfgContainer [2023-11-19 04:14:37,906 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 04:14:37,911 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 04:14:37,911 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 04:14:37,914 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 04:14:37,914 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 04:14:31" (1/3) ... [2023-11-19 04:14:37,915 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@617b42c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:14:37, skipping insertion in model container [2023-11-19 04:14:37,916 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:14:32" (2/3) ... [2023-11-19 04:14:37,917 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@617b42c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:14:37, skipping insertion in model container [2023-11-19 04:14:37,918 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:14:37" (3/3) ... [2023-11-19 04:14:37,919 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.v_DAIO.c [2023-11-19 04:14:37,940 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 04:14:37,940 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-19 04:14:38,003 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 04:14:38,013 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;@641ecce0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-19 04:14:38,014 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-19 04:14:38,018 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 04:14:38,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-11-19 04:14:38,027 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:14:38,028 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-11-19 04:14:38,029 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 04:14:38,038 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:14:38,039 INFO L85 PathProgramCache]: Analyzing trace with hash 30509472, now seen corresponding path program 1 times [2023-11-19 04:14:38,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:14:38,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1859104828] [2023-11-19 04:14:38,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:14:38,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:14:38,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 04:14:38,531 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 04:14:38,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 04:14:38,747 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-11-19 04:14:38,748 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-19 04:14:38,750 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-19 04:14:38,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 04:14:38,756 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-11-19 04:14:38,759 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-19 04:14:38,803 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2023-11-19 04:14:38,825 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 04:14:38 BoogieIcfgContainer [2023-11-19 04:14:38,827 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-19 04:14:38,829 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-19 04:14:38,829 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-19 04:14:38,830 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-19 04:14:38,830 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:14:37" (3/4) ... [2023-11-19 04:14:38,834 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-19 04:14:38,835 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-19 04:14:38,837 INFO L158 Benchmark]: Toolchain (without parser) took 6978.36ms. Allocated memory was 136.3MB in the beginning and 379.6MB in the end (delta: 243.3MB). Free memory was 89.0MB in the beginning and 106.4MB in the end (delta: -17.4MB). Peak memory consumption was 227.5MB. Max. memory is 16.1GB. [2023-11-19 04:14:38,837 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 136.3MB. Free memory is still 83.0MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 04:14:38,838 INFO L158 Benchmark]: CACSL2BoogieTranslator took 910.06ms. Allocated memory was 136.3MB in the beginning and 205.5MB in the end (delta: 69.2MB). Free memory was 88.7MB in the beginning and 150.0MB in the end (delta: -61.2MB). Peak memory consumption was 36.2MB. Max. memory is 16.1GB. [2023-11-19 04:14:38,839 INFO L158 Benchmark]: Boogie Procedure Inliner took 260.48ms. Allocated memory is still 205.5MB. Free memory was 150.0MB in the beginning and 120.7MB in the end (delta: 29.2MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. [2023-11-19 04:14:38,845 INFO L158 Benchmark]: Boogie Preprocessor took 205.27ms. Allocated memory is still 205.5MB. Free memory was 120.7MB in the beginning and 110.0MB in the end (delta: 10.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-19 04:14:38,845 INFO L158 Benchmark]: RCFGBuilder took 4669.17ms. Allocated memory was 205.5MB in the beginning and 379.6MB in the end (delta: 174.1MB). Free memory was 110.0MB in the beginning and 158.8MB in the end (delta: -48.8MB). Peak memory consumption was 203.9MB. Max. memory is 16.1GB. [2023-11-19 04:14:38,847 INFO L158 Benchmark]: TraceAbstraction took 917.02ms. Allocated memory is still 379.6MB. Free memory was 157.8MB in the beginning and 106.4MB in the end (delta: 51.4MB). Peak memory consumption was 50.3MB. Max. memory is 16.1GB. [2023-11-19 04:14:38,847 INFO L158 Benchmark]: Witness Printer took 6.32ms. Allocated memory is still 379.6MB. Free memory is still 106.4MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 04:14:38,855 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28ms. Allocated memory is still 136.3MB. Free memory is still 83.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 910.06ms. Allocated memory was 136.3MB in the beginning and 205.5MB in the end (delta: 69.2MB). Free memory was 88.7MB in the beginning and 150.0MB in the end (delta: -61.2MB). Peak memory consumption was 36.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 260.48ms. Allocated memory is still 205.5MB. Free memory was 150.0MB in the beginning and 120.7MB in the end (delta: 29.2MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 205.27ms. Allocated memory is still 205.5MB. Free memory was 120.7MB in the beginning and 110.0MB in the end (delta: 10.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * RCFGBuilder took 4669.17ms. Allocated memory was 205.5MB in the beginning and 379.6MB in the end (delta: 174.1MB). Free memory was 110.0MB in the beginning and 158.8MB in the end (delta: -48.8MB). Peak memory consumption was 203.9MB. Max. memory is 16.1GB. * TraceAbstraction took 917.02ms. Allocated memory is still 379.6MB. Free memory was 157.8MB in the beginning and 106.4MB in the end (delta: 51.4MB). Peak memory consumption was 50.3MB. Max. memory is 16.1GB. * Witness Printer took 6.32ms. Allocated memory is still 379.6MB. Free memory is still 106.4MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 21]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: overapproximation of bitwiseOr at line 295, overapproximation of bitwiseAnd at line 192. 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_10 mask_SORT_10 = (SORT_10)-1 >> (sizeof(SORT_10) * 8 - 4); [L30] const SORT_10 msb_SORT_10 = (SORT_10)1 << (4 - 1); [L32] const SORT_16 mask_SORT_16 = (SORT_16)-1 >> (sizeof(SORT_16) * 8 - 32); [L33] const SORT_16 msb_SORT_16 = (SORT_16)1 << (32 - 1); [L35] const SORT_32 mask_SORT_32 = (SORT_32)-1 >> (sizeof(SORT_32) * 8 - 7); [L36] const SORT_32 msb_SORT_32 = (SORT_32)1 << (7 - 1); [L38] const SORT_40 mask_SORT_40 = (SORT_40)-1 >> (sizeof(SORT_40) * 8 - 9); [L39] const SORT_40 msb_SORT_40 = (SORT_40)1 << (9 - 1); [L41] const SORT_60 mask_SORT_60 = (SORT_60)-1 >> (sizeof(SORT_60) * 8 - 20); [L42] const SORT_60 msb_SORT_60 = (SORT_60)1 << (20 - 1); [L44] const SORT_357 mask_SORT_357 = (SORT_357)-1 >> (sizeof(SORT_357) * 8 - 2); [L45] const SORT_357 msb_SORT_357 = (SORT_357)1 << (2 - 1); [L47] const SORT_359 mask_SORT_359 = (SORT_359)-1 >> (sizeof(SORT_359) * 8 - 3); [L48] const SORT_359 msb_SORT_359 = (SORT_359)1 << (3 - 1); [L50] const SORT_1 var_13 = 0; [L51] const SORT_16 var_18 = 1; [L52] const SORT_16 var_23 = 0; [L53] const SORT_1 var_28 = 1; [L54] const SORT_32 var_33 = 0; [L55] const SORT_40 var_41 = 0; [L56] const SORT_10 var_48 = 0; [L57] const SORT_16 var_67 = 31; [L58] const SORT_16 var_71 = 32; [L59] const SORT_10 var_74 = 3; [L60] const SORT_16 var_90 = 2; [L61] const SORT_10 var_96 = 5; [L62] const SORT_10 var_117 = 7; [L63] const SORT_10 var_136 = 9; [L64] const SORT_32 var_233 = 4; [L65] const SORT_10 var_235 = 2; [L66] const SORT_32 var_254 = 1; [L67] const SORT_16 var_256 = 191; [L68] const SORT_10 var_259 = 6; [L69] const SORT_10 var_282 = 4; [L70] const SORT_10 var_307 = 8; [L71] const SORT_40 var_315 = 1; [L72] const SORT_10 var_321 = 10; [L73] const SORT_10 var_329 = 1; [L75] SORT_1 input_2; [L76] SORT_1 input_3; [L77] SORT_1 input_4; [L78] SORT_1 input_5; [L79] SORT_1 input_6; [L80] SORT_1 input_7; [L81] SORT_1 input_8; [L82] SORT_1 input_9; [L83] SORT_10 input_11; [L84] SORT_10 input_12; [L85] SORT_1 input_38; [L86] SORT_1 input_44; [L87] SORT_1 input_46; [L88] SORT_1 input_52; [L89] SORT_1 input_54; [L90] SORT_1 input_56; [L91] SORT_1 input_58; [L92] SORT_60 input_61; [L93] SORT_1 input_63; [L94] SORT_1 input_64; [L95] SORT_1 input_65; [L96] SORT_1 input_77; [L97] SORT_1 input_82; [L98] SORT_1 input_86; [L99] SORT_1 input_87; [L100] SORT_1 input_88; [L101] SORT_1 input_99; [L102] SORT_1 input_104; [L103] SORT_1 input_108; [L104] SORT_1 input_109; [L105] SORT_1 input_110; [L106] SORT_1 input_120; [L107] SORT_1 input_125; [L108] SORT_1 input_127; [L109] SORT_1 input_128; [L110] SORT_1 input_129; [L111] SORT_1 input_139; [L112] SORT_1 input_144; [L113] SORT_1 input_151; [L114] SORT_1 input_155; [L115] SORT_1 input_156; [L116] SORT_1 input_157; [L117] SORT_1 input_164; [L118] SORT_1 input_169; [L119] SORT_1 input_173; [L120] SORT_1 input_174; [L121] SORT_1 input_175; [L122] SORT_1 input_182; [L123] SORT_1 input_187; [L124] SORT_1 input_191; [L125] SORT_1 input_192; [L126] SORT_1 input_193; [L127] SORT_1 input_200; [L128] SORT_1 input_205; [L129] SORT_1 input_207; [L130] SORT_1 input_208; [L131] SORT_1 input_209; [L132] SORT_1 input_216; [L133] SORT_1 input_221; [L134] SORT_1 input_228; [L135] SORT_32 input_232; [L136] SORT_32 input_238; [L137] SORT_32 input_242; [L138] SORT_32 input_249; [L139] SORT_32 input_253; [L140] SORT_32 input_262; [L141] SORT_32 input_264; [L142] SORT_32 input_271; [L143] SORT_32 input_278; [L144] SORT_32 input_285; [L145] SORT_32 input_292; [L146] SORT_32 input_296; [L147] SORT_32 input_303; [L148] SORT_32 input_311; [L149] SORT_40 input_324; [L150] SORT_10 input_328; [L151] SORT_10 input_334; [L152] SORT_10 input_340; [L153] SORT_10 input_344; [L154] SORT_10 input_346; [L155] SORT_10 input_350; [L156] SORT_10 input_363; [L157] SORT_10 input_367; [L158] SORT_10 input_369; [L159] SORT_10 input_373; [L160] SORT_10 input_377; [L161] SORT_10 input_381; [L162] SORT_10 input_385; [L163] SORT_10 input_389; [L164] SORT_10 input_406; [L166] EXPR __VERIFIER_nondet_uchar() & mask_SORT_1 [L166] SORT_1 state_14 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L167] EXPR __VERIFIER_nondet_uchar() & mask_SORT_1 [L167] SORT_1 state_20 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L168] EXPR __VERIFIER_nondet_uchar() & mask_SORT_32 [L168] SORT_32 state_34 = __VERIFIER_nondet_uchar() & mask_SORT_32; [L169] EXPR __VERIFIER_nondet_uchar() & mask_SORT_32 [L169] SORT_32 state_36 = __VERIFIER_nondet_uchar() & mask_SORT_32; [L170] EXPR __VERIFIER_nondet_ushort() & mask_SORT_40 [L170] SORT_40 state_42 = __VERIFIER_nondet_ushort() & mask_SORT_40; [L171] EXPR __VERIFIER_nondet_uchar() & mask_SORT_10 [L171] SORT_10 state_49 = __VERIFIER_nondet_uchar() & mask_SORT_10; [L173] SORT_1 init_15_arg_1 = var_13; [L174] state_14 = init_15_arg_1 [L175] SORT_1 init_21_arg_1 = var_13; [L176] state_20 = init_21_arg_1 [L177] SORT_32 init_35_arg_1 = var_33; [L178] state_34 = init_35_arg_1 [L179] SORT_32 init_37_arg_1 = var_33; [L180] state_36 = init_37_arg_1 [L181] SORT_40 init_43_arg_1 = var_41; [L182] state_42 = init_43_arg_1 [L183] SORT_10 init_50_arg_1 = var_48; [L184] state_49 = init_50_arg_1 VAL [init_15_arg_1=0, init_21_arg_1=0, init_35_arg_1=0, init_37_arg_1=0, init_43_arg_1=0, init_50_arg_1=0, mask_SORT_10=15, mask_SORT_16=4294967295, mask_SORT_1=1, mask_SORT_32=127, mask_SORT_357=3, mask_SORT_359=7, mask_SORT_40=511, mask_SORT_60=1048575, msb_SORT_10=8, msb_SORT_16=2147483648, msb_SORT_1=1, msb_SORT_32=64, msb_SORT_357=2, msb_SORT_359=4, msb_SORT_40=256, msb_SORT_60=524288, state_14=0, state_20=0, state_34=0, state_36=0, state_42=0, state_49=0, var_117=7, var_136=9, var_13=0, var_18=1, var_233=4, var_235=2, var_23=0, var_254=1, var_256=191, var_259=6, var_282=4, var_28=1, var_307=8, var_315=1, var_321=10, var_329=1, var_33=0, var_41=0, var_48=0, var_67=31, var_71=32, var_74=3, var_90=2, var_96=5] [L187] input_2 = __VERIFIER_nondet_uchar() [L188] input_3 = __VERIFIER_nondet_uchar() [L189] input_4 = __VERIFIER_nondet_uchar() [L190] input_5 = __VERIFIER_nondet_uchar() [L191] input_6 = __VERIFIER_nondet_uchar() [L192] EXPR input_6 & mask_SORT_1 [L192] input_6 = input_6 & mask_SORT_1 [L193] input_7 = __VERIFIER_nondet_uchar() [L194] input_8 = __VERIFIER_nondet_uchar() [L195] input_9 = __VERIFIER_nondet_uchar() [L196] EXPR input_9 & mask_SORT_1 [L196] input_9 = input_9 & mask_SORT_1 [L197] input_11 = __VERIFIER_nondet_uchar() [L198] input_12 = __VERIFIER_nondet_uchar() [L199] input_38 = __VERIFIER_nondet_uchar() [L200] input_44 = __VERIFIER_nondet_uchar() [L201] input_46 = __VERIFIER_nondet_uchar() [L202] input_52 = __VERIFIER_nondet_uchar() [L203] input_54 = __VERIFIER_nondet_uchar() [L204] input_56 = __VERIFIER_nondet_uchar() [L205] input_58 = __VERIFIER_nondet_uchar() [L206] input_61 = __VERIFIER_nondet_uint() [L207] input_63 = __VERIFIER_nondet_uchar() [L208] input_64 = __VERIFIER_nondet_uchar() [L209] input_65 = __VERIFIER_nondet_uchar() [L210] input_77 = __VERIFIER_nondet_uchar() [L211] input_82 = __VERIFIER_nondet_uchar() [L212] input_86 = __VERIFIER_nondet_uchar() [L213] input_87 = __VERIFIER_nondet_uchar() [L214] input_88 = __VERIFIER_nondet_uchar() [L215] input_99 = __VERIFIER_nondet_uchar() [L216] input_104 = __VERIFIER_nondet_uchar() [L217] input_108 = __VERIFIER_nondet_uchar() [L218] input_109 = __VERIFIER_nondet_uchar() [L219] input_110 = __VERIFIER_nondet_uchar() [L220] input_120 = __VERIFIER_nondet_uchar() [L221] input_125 = __VERIFIER_nondet_uchar() [L222] input_127 = __VERIFIER_nondet_uchar() [L223] input_128 = __VERIFIER_nondet_uchar() [L224] input_129 = __VERIFIER_nondet_uchar() [L225] input_139 = __VERIFIER_nondet_uchar() [L226] input_144 = __VERIFIER_nondet_uchar() [L227] input_151 = __VERIFIER_nondet_uchar() [L228] input_155 = __VERIFIER_nondet_uchar() [L229] input_156 = __VERIFIER_nondet_uchar() [L230] input_157 = __VERIFIER_nondet_uchar() [L231] input_164 = __VERIFIER_nondet_uchar() [L232] input_169 = __VERIFIER_nondet_uchar() [L233] input_173 = __VERIFIER_nondet_uchar() [L234] input_174 = __VERIFIER_nondet_uchar() [L235] input_175 = __VERIFIER_nondet_uchar() [L236] input_182 = __VERIFIER_nondet_uchar() [L237] input_187 = __VERIFIER_nondet_uchar() [L238] input_191 = __VERIFIER_nondet_uchar() [L239] input_192 = __VERIFIER_nondet_uchar() [L240] input_193 = __VERIFIER_nondet_uchar() [L241] input_200 = __VERIFIER_nondet_uchar() [L242] input_205 = __VERIFIER_nondet_uchar() [L243] input_207 = __VERIFIER_nondet_uchar() [L244] input_208 = __VERIFIER_nondet_uchar() [L245] input_209 = __VERIFIER_nondet_uchar() [L246] input_216 = __VERIFIER_nondet_uchar() [L247] input_221 = __VERIFIER_nondet_uchar() [L248] input_228 = __VERIFIER_nondet_uchar() [L249] input_232 = __VERIFIER_nondet_uchar() [L250] input_238 = __VERIFIER_nondet_uchar() [L251] input_242 = __VERIFIER_nondet_uchar() [L252] input_249 = __VERIFIER_nondet_uchar() [L253] input_253 = __VERIFIER_nondet_uchar() [L254] input_262 = __VERIFIER_nondet_uchar() [L255] input_264 = __VERIFIER_nondet_uchar() [L256] input_271 = __VERIFIER_nondet_uchar() [L257] input_278 = __VERIFIER_nondet_uchar() [L258] input_285 = __VERIFIER_nondet_uchar() [L259] input_292 = __VERIFIER_nondet_uchar() [L260] input_296 = __VERIFIER_nondet_uchar() [L261] input_303 = __VERIFIER_nondet_uchar() [L262] input_311 = __VERIFIER_nondet_uchar() [L263] input_324 = __VERIFIER_nondet_ushort() [L264] input_328 = __VERIFIER_nondet_uchar() [L265] input_334 = __VERIFIER_nondet_uchar() [L266] input_340 = __VERIFIER_nondet_uchar() [L267] input_344 = __VERIFIER_nondet_uchar() [L268] input_346 = __VERIFIER_nondet_uchar() [L269] input_350 = __VERIFIER_nondet_uchar() [L270] input_363 = __VERIFIER_nondet_uchar() [L271] input_367 = __VERIFIER_nondet_uchar() [L272] input_369 = __VERIFIER_nondet_uchar() [L273] input_373 = __VERIFIER_nondet_uchar() [L274] input_377 = __VERIFIER_nondet_uchar() [L275] input_381 = __VERIFIER_nondet_uchar() [L276] input_385 = __VERIFIER_nondet_uchar() [L277] input_389 = __VERIFIER_nondet_uchar() [L278] input_406 = __VERIFIER_nondet_uchar() [L281] SORT_1 var_17_arg_0 = state_14; [L282] EXPR var_17_arg_0 & mask_SORT_1 [L282] var_17_arg_0 = var_17_arg_0 & mask_SORT_1 [L283] SORT_16 var_17 = var_17_arg_0; [L284] SORT_16 var_19_arg_0 = var_17; [L285] SORT_16 var_19_arg_1 = var_18; [L286] SORT_1 var_19 = var_19_arg_0 == var_19_arg_1; [L287] SORT_1 var_22_arg_0 = state_20; [L288] EXPR var_22_arg_0 & mask_SORT_1 [L288] var_22_arg_0 = var_22_arg_0 & mask_SORT_1 [L289] SORT_16 var_22 = var_22_arg_0; [L290] SORT_16 var_24_arg_0 = var_22; [L291] SORT_16 var_24_arg_1 = var_23; [L292] SORT_1 var_24 = var_24_arg_0 == var_24_arg_1; [L293] SORT_1 var_25_arg_0 = var_19; [L294] SORT_1 var_25_arg_1 = var_24; [L295] EXPR var_25_arg_0 | var_25_arg_1 [L295] SORT_1 var_25 = var_25_arg_0 | var_25_arg_1; [L296] SORT_1 var_29_arg_0 = var_25; [L297] SORT_1 var_29 = ~var_29_arg_0; [L298] SORT_1 var_30_arg_0 = var_28; [L299] SORT_1 var_30_arg_1 = var_29; [L300] EXPR var_30_arg_0 & var_30_arg_1 [L300] SORT_1 var_30 = var_30_arg_0 & var_30_arg_1; [L301] EXPR var_30 & mask_SORT_1 [L301] var_30 = var_30 & mask_SORT_1 [L302] SORT_1 bad_31_arg_0 = var_30; [L303] CALL __VERIFIER_assert(!(bad_31_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: 0.8s, 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, 0.4s 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 [2023-11-19 04:14:38,898 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75df0527-acfb-4d30-99c7-a1234f61fedf/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_75df0527-acfb-4d30-99c7-a1234f61fedf/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75df0527-acfb-4d30-99c7-a1234f61fedf/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_75df0527-acfb-4d30-99c7-a1234f61fedf/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75df0527-acfb-4d30-99c7-a1234f61fedf/bin/utaipan-verify-t7M7D8N6sZ/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.v_DAIO.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75df0527-acfb-4d30-99c7-a1234f61fedf/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_75df0527-acfb-4d30-99c7-a1234f61fedf/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 a68330c23bd8fa71b4f2c1a72229a125c9c545dc64c1e4d5015a2916cb213688 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 04:14:41,417 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 04:14:41,536 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75df0527-acfb-4d30-99c7-a1234f61fedf/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2023-11-19 04:14:41,544 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 04:14:41,545 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 04:14:41,592 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 04:14:41,593 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 04:14:41,594 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 04:14:41,595 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 04:14:41,599 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 04:14:41,600 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 04:14:41,600 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 04:14:41,601 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 04:14:41,602 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 04:14:41,603 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 04:14:41,603 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 04:14:41,604 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 04:14:41,604 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 04:14:41,605 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 04:14:41,606 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 04:14:41,606 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 04:14:41,607 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 04:14:41,607 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-19 04:14:41,607 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-19 04:14:41,608 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-19 04:14:41,608 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 04:14:41,609 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 04:14:41,609 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 04:14:41,609 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 04:14:41,610 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 04:14:41,611 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 04:14:41,611 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 04:14:41,611 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 04:14:41,612 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 04:14:41,612 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-11-19 04:14:41,612 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-19 04:14:41,613 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 04:14:41,613 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 04:14:41,613 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 04:14:41,614 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_75df0527-acfb-4d30-99c7-a1234f61fedf/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75df0527-acfb-4d30-99c7-a1234f61fedf/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a68330c23bd8fa71b4f2c1a72229a125c9c545dc64c1e4d5015a2916cb213688 [2023-11-19 04:14:42,021 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 04:14:42,052 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 04:14:42,055 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 04:14:42,056 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 04:14:42,057 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 04:14:42,058 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75df0527-acfb-4d30-99c7-a1234f61fedf/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.v_DAIO.c [2023-11-19 04:14:45,278 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 04:14:45,643 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 04:14:45,644 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75df0527-acfb-4d30-99c7-a1234f61fedf/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.v_DAIO.c [2023-11-19 04:14:45,664 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75df0527-acfb-4d30-99c7-a1234f61fedf/bin/utaipan-verify-t7M7D8N6sZ/data/4e6fb0808/0212b344343445038ed61780fc4d3fd7/FLAG9a42f5ecb [2023-11-19 04:14:45,683 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75df0527-acfb-4d30-99c7-a1234f61fedf/bin/utaipan-verify-t7M7D8N6sZ/data/4e6fb0808/0212b344343445038ed61780fc4d3fd7 [2023-11-19 04:14:45,688 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 04:14:45,691 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 04:14:45,696 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 04:14:45,696 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 04:14:45,701 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 04:14:45,703 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:14:45" (1/1) ... [2023-11-19 04:14:45,704 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@bb4091e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:14:45, skipping insertion in model container [2023-11-19 04:14:45,704 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:14:45" (1/1) ... [2023-11-19 04:14:45,805 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 04:14:46,035 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_75df0527-acfb-4d30-99c7-a1234f61fedf/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.v_DAIO.c[1246,1259] [2023-11-19 04:14:46,357 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:14:46,380 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 04:14:46,395 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75df0527-acfb-4d30-99c7-a1234f61fedf/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.v_DAIO.c[1246,1259] [2023-11-19 04:14:46,590 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:14:46,606 INFO L206 MainTranslator]: Completed translation [2023-11-19 04:14:46,607 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:14:46 WrapperNode [2023-11-19 04:14:46,607 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 04:14:46,609 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 04:14:46,609 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 04:14:46,609 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 04:14:46,617 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:14:46" (1/1) ... [2023-11-19 04:14:46,669 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:14:46" (1/1) ... [2023-11-19 04:14:46,774 INFO L138 Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1378 [2023-11-19 04:14:46,775 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 04:14:46,775 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 04:14:46,776 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 04:14:46,776 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 04:14:46,785 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:14:46" (1/1) ... [2023-11-19 04:14:46,785 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:14:46" (1/1) ... [2023-11-19 04:14:46,795 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:14:46" (1/1) ... [2023-11-19 04:14:46,796 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:14:46" (1/1) ... [2023-11-19 04:14:46,851 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:14:46" (1/1) ... [2023-11-19 04:14:46,863 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:14:46" (1/1) ... [2023-11-19 04:14:46,870 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:14:46" (1/1) ... [2023-11-19 04:14:46,879 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:14:46" (1/1) ... [2023-11-19 04:14:46,894 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 04:14:46,895 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 04:14:46,895 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 04:14:46,895 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 04:14:46,896 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:14:46" (1/1) ... [2023-11-19 04:14:46,901 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 04:14:46,936 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75df0527-acfb-4d30-99c7-a1234f61fedf/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:14:46,953 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75df0527-acfb-4d30-99c7-a1234f61fedf/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 04:14:46,990 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75df0527-acfb-4d30-99c7-a1234f61fedf/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 04:14:47,000 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 04:14:47,001 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-19 04:14:47,001 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 04:14:47,001 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 04:14:47,381 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 04:14:47,386 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 04:14:48,929 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 04:14:48,935 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 04:14:48,936 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-19 04:14:48,940 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:14:48 BoogieIcfgContainer [2023-11-19 04:14:48,940 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 04:14:48,943 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 04:14:48,943 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 04:14:48,946 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 04:14:48,948 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 04:14:45" (1/3) ... [2023-11-19 04:14:48,949 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a7b4265 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:14:48, skipping insertion in model container [2023-11-19 04:14:48,949 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:14:46" (2/3) ... [2023-11-19 04:14:48,951 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a7b4265 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:14:48, skipping insertion in model container [2023-11-19 04:14:48,951 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:14:48" (3/3) ... [2023-11-19 04:14:48,952 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.v_DAIO.c [2023-11-19 04:14:48,971 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 04:14:48,971 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-19 04:14:49,042 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 04:14:49,049 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;@461e5394, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-19 04:14:49,050 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-19 04:14:49,055 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 04:14:49,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-19 04:14:49,061 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:14:49,062 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-19 04:14:49,063 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 04:14:49,070 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:14:49,071 INFO L85 PathProgramCache]: Analyzing trace with hash 28698761, now seen corresponding path program 1 times [2023-11-19 04:14:49,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 04:14:49,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1760423222] [2023-11-19 04:14:49,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:14:49,088 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 04:14:49,088 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75df0527-acfb-4d30-99c7-a1234f61fedf/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 04:14:49,094 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75df0527-acfb-4d30-99c7-a1234f61fedf/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 04:14:49,137 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75df0527-acfb-4d30-99c7-a1234f61fedf/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 04:14:49,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:14:49,452 INFO L262 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 20 conjunts are in the unsatisfiable core [2023-11-19 04:14:49,464 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:14:49,725 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 04:14:49,726 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 04:14:49,726 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 04:14:49,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1760423222] [2023-11-19 04:14:49,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1760423222] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:14:49,728 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:14:49,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 04:14:49,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852013780] [2023-11-19 04:14:49,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:14:49,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 04:14:49,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 04:14:49,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 04:14:49,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 04:14:49,775 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 04:14:50,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:14:50,076 INFO L93 Difference]: Finished difference Result 19 states and 27 transitions. [2023-11-19 04:14:50,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 04:14:50,078 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 04:14:50,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:14:50,086 INFO L225 Difference]: With dead ends: 19 [2023-11-19 04:14:50,087 INFO L226 Difference]: Without dead ends: 10 [2023-11-19 04:14:50,090 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 04:14:50,096 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 3 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s 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, 0.3s IncrementalHoareTripleChecker+Time [2023-11-19 04:14:50,098 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 11 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-19 04:14:50,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2023-11-19 04:14:50,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 9. [2023-11-19 04:14:50,128 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 04:14:50,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2023-11-19 04:14:50,130 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 5 [2023-11-19 04:14:50,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:14:50,131 INFO L495 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2023-11-19 04:14:50,131 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 04:14:50,131 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2023-11-19 04:14:50,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-19 04:14:50,132 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:14:50,132 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2023-11-19 04:14:50,135 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75df0527-acfb-4d30-99c7-a1234f61fedf/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 04:14:50,334 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75df0527-acfb-4d30-99c7-a1234f61fedf/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 04:14:50,335 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 04:14:50,335 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:14:50,335 INFO L85 PathProgramCache]: Analyzing trace with hash 271073635, now seen corresponding path program 1 times [2023-11-19 04:14:50,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 04:14:50,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1738689814] [2023-11-19 04:14:50,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:14:50,338 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 04:14:50,338 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75df0527-acfb-4d30-99c7-a1234f61fedf/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 04:14:50,340 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75df0527-acfb-4d30-99c7-a1234f61fedf/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 04:14:50,383 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75df0527-acfb-4d30-99c7-a1234f61fedf/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 04:14:51,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:14:51,875 INFO L262 TraceCheckSpWp]: Trace formula consists of 984 conjuncts, 61 conjunts are in the unsatisfiable core [2023-11-19 04:14:51,894 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:14:52,910 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 04:14:52,910 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 04:15:06,159 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 04:15:06,159 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 04:15:06,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1738689814] [2023-11-19 04:15:06,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1738689814] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 04:15:06,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1190186683] [2023-11-19 04:15:06,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:15:06,161 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-19 04:15:06,161 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75df0527-acfb-4d30-99c7-a1234f61fedf/bin/utaipan-verify-t7M7D8N6sZ/cvc4 [2023-11-19 04:15:06,163 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75df0527-acfb-4d30-99c7-a1234f61fedf/bin/utaipan-verify-t7M7D8N6sZ/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-19 04:15:06,171 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75df0527-acfb-4d30-99c7-a1234f61fedf/bin/utaipan-verify-t7M7D8N6sZ/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2023-11-19 04:15:07,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:15:07,317 INFO L262 TraceCheckSpWp]: Trace formula consists of 984 conjuncts, 77 conjunts are in the unsatisfiable core [2023-11-19 04:15:07,332 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:15:08,083 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 04:15:08,084 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 04:15:16,950 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 04:15:16,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1190186683] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 04:15:16,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1167774140] [2023-11-19 04:15:16,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:15:16,951 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:15:16,951 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75df0527-acfb-4d30-99c7-a1234f61fedf/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:15:16,957 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75df0527-acfb-4d30-99c7-a1234f61fedf/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 04:15:16,975 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75df0527-acfb-4d30-99c7-a1234f61fedf/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-19 04:15:17,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:15:17,491 INFO L262 TraceCheckSpWp]: Trace formula consists of 984 conjuncts, 77 conjunts are in the unsatisfiable core [2023-11-19 04:15:17,505 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:15:17,956 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 04:15:17,957 INFO L327 TraceCheckSpWp]: Computing backward predicates...