./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal57.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ee5f10-6bc1-4e1f-bd82-cbf870f0ddbc/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ee5f10-6bc1-4e1f-bd82-cbf870f0ddbc/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_56ee5f10-6bc1-4e1f-bd82-cbf870f0ddbc/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ee5f10-6bc1-4e1f-bd82-cbf870f0ddbc/bin/utaipan-verify-t7M7D8N6sZ/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal57.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ee5f10-6bc1-4e1f-bd82-cbf870f0ddbc/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_56ee5f10-6bc1-4e1f-bd82-cbf870f0ddbc/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 2328acd9311a64c53ad5874211f9b9da337dc2131958a2367da03f2374a4827a --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 05:23:43,001 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 05:23:43,099 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ee5f10-6bc1-4e1f-bd82-cbf870f0ddbc/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-11-19 05:23:43,106 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 05:23:43,107 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 05:23:43,138 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 05:23:43,139 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 05:23:43,140 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 05:23:43,141 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 05:23:43,142 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 05:23:43,143 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 05:23:43,143 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 05:23:43,144 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 05:23:43,145 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-19 05:23:43,145 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 05:23:43,146 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 05:23:43,147 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-19 05:23:43,147 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-19 05:23:43,148 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 05:23:43,149 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-19 05:23:43,150 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-19 05:23:43,150 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-19 05:23:43,151 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 05:23:43,152 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 05:23:43,153 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 05:23:43,153 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 05:23:43,154 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 05:23:43,154 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 05:23:43,155 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 05:23:43,156 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 05:23:43,156 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 05:23:43,157 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 05:23:43,158 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 05:23:43,158 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:23:43,159 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 05:23:43,160 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 05:23:43,160 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 05:23:43,161 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-19 05:23:43,162 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 05:23:43,162 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 05:23:43,163 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 05:23:43,164 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 05:23:43,164 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_56ee5f10-6bc1-4e1f-bd82-cbf870f0ddbc/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ee5f10-6bc1-4e1f-bd82-cbf870f0ddbc/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2328acd9311a64c53ad5874211f9b9da337dc2131958a2367da03f2374a4827a [2023-11-19 05:23:43,529 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 05:23:43,565 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 05:23:43,568 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 05:23:43,571 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 05:23:43,571 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 05:23:43,573 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ee5f10-6bc1-4e1f-bd82-cbf870f0ddbc/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal57.c [2023-11-19 05:23:46,726 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 05:23:47,023 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 05:23:47,025 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ee5f10-6bc1-4e1f-bd82-cbf870f0ddbc/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal57.c [2023-11-19 05:23:47,045 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ee5f10-6bc1-4e1f-bd82-cbf870f0ddbc/bin/utaipan-verify-t7M7D8N6sZ/data/5624efdfe/786f900e3c1b47969f548689effc6a7f/FLAGb16211cb2 [2023-11-19 05:23:47,068 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ee5f10-6bc1-4e1f-bd82-cbf870f0ddbc/bin/utaipan-verify-t7M7D8N6sZ/data/5624efdfe/786f900e3c1b47969f548689effc6a7f [2023-11-19 05:23:47,074 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 05:23:47,076 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 05:23:47,078 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 05:23:47,079 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 05:23:47,085 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 05:23:47,086 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:23:47" (1/1) ... [2023-11-19 05:23:47,089 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b74407b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:23:47, skipping insertion in model container [2023-11-19 05:23:47,090 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:23:47" (1/1) ... [2023-11-19 05:23:47,138 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 05:23:47,290 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_56ee5f10-6bc1-4e1f-bd82-cbf870f0ddbc/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal57.c[1245,1258] [2023-11-19 05:23:47,358 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:23:47,370 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 05:23:47,383 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_56ee5f10-6bc1-4e1f-bd82-cbf870f0ddbc/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal57.c[1245,1258] [2023-11-19 05:23:47,451 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:23:47,473 INFO L206 MainTranslator]: Completed translation [2023-11-19 05:23:47,473 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:23:47 WrapperNode [2023-11-19 05:23:47,474 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 05:23:47,475 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 05:23:47,475 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 05:23:47,475 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 05:23:47,484 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:23:47" (1/1) ... [2023-11-19 05:23:47,500 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:23:47" (1/1) ... [2023-11-19 05:23:47,583 INFO L138 Inliner]: procedures = 17, calls = 16, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 326 [2023-11-19 05:23:47,583 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 05:23:47,584 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 05:23:47,584 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 05:23:47,585 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 05:23:47,595 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:23:47" (1/1) ... [2023-11-19 05:23:47,595 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:23:47" (1/1) ... [2023-11-19 05:23:47,605 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:23:47" (1/1) ... [2023-11-19 05:23:47,605 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:23:47" (1/1) ... [2023-11-19 05:23:47,631 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:23:47" (1/1) ... [2023-11-19 05:23:47,636 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:23:47" (1/1) ... [2023-11-19 05:23:47,641 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:23:47" (1/1) ... [2023-11-19 05:23:47,646 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:23:47" (1/1) ... [2023-11-19 05:23:47,658 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 05:23:47,659 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 05:23:47,660 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 05:23:47,660 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 05:23:47,661 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:23:47" (1/1) ... [2023-11-19 05:23:47,668 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:23:47,683 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ee5f10-6bc1-4e1f-bd82-cbf870f0ddbc/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:23:47,698 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ee5f10-6bc1-4e1f-bd82-cbf870f0ddbc/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 05:23:47,742 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ee5f10-6bc1-4e1f-bd82-cbf870f0ddbc/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 05:23:47,763 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 05:23:47,764 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 05:23:47,764 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 05:23:47,764 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 05:23:47,917 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 05:23:47,919 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 05:23:48,548 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 05:23:49,049 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 05:23:49,050 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-19 05:23:49,055 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:23:49 BoogieIcfgContainer [2023-11-19 05:23:49,058 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 05:23:49,065 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 05:23:49,066 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 05:23:49,070 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 05:23:49,071 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 05:23:47" (1/3) ... [2023-11-19 05:23:49,071 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25500319 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:23:49, skipping insertion in model container [2023-11-19 05:23:49,072 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:23:47" (2/3) ... [2023-11-19 05:23:49,074 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25500319 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:23:49, skipping insertion in model container [2023-11-19 05:23:49,074 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:23:49" (3/3) ... [2023-11-19 05:23:49,076 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.cal57.c [2023-11-19 05:23:49,100 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 05:23:49,101 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-19 05:23:49,163 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 05:23:49,171 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;@36cca149, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-19 05:23:49,171 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-19 05:23:49,175 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 05:23:49,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-11-19 05:23:49,182 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:23:49,182 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-11-19 05:23:49,183 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:23:49,188 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:23:49,188 INFO L85 PathProgramCache]: Analyzing trace with hash 9113000, now seen corresponding path program 1 times [2023-11-19 05:23:49,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:23:49,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1042523754] [2023-11-19 05:23:49,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:23:49,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:23:49,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 05:23:49,788 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 05:23:50,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 05:23:50,055 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-11-19 05:23:50,057 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-19 05:23:50,059 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-19 05:23:50,062 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 05:23:50,068 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-11-19 05:23:50,073 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-19 05:23:50,097 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2023-11-19 05:23:50,110 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 05:23:50 BoogieIcfgContainer [2023-11-19 05:23:50,110 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-19 05:23:50,111 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-19 05:23:50,111 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-19 05:23:50,112 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-19 05:23:50,112 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:23:49" (3/4) ... [2023-11-19 05:23:50,115 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-19 05:23:50,117 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-19 05:23:50,119 INFO L158 Benchmark]: Toolchain (without parser) took 3041.90ms. Allocated memory was 151.0MB in the beginning and 207.6MB in the end (delta: 56.6MB). Free memory was 107.1MB in the beginning and 144.7MB in the end (delta: -37.6MB). Peak memory consumption was 20.8MB. Max. memory is 16.1GB. [2023-11-19 05:23:50,119 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 117.4MB. Free memory is still 66.5MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 05:23:50,120 INFO L158 Benchmark]: CACSL2BoogieTranslator took 395.71ms. Allocated memory is still 151.0MB. Free memory was 106.8MB in the beginning and 92.7MB in the end (delta: 14.1MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-11-19 05:23:50,121 INFO L158 Benchmark]: Boogie Procedure Inliner took 108.55ms. Allocated memory is still 151.0MB. Free memory was 92.7MB in the beginning and 86.0MB in the end (delta: 6.6MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2023-11-19 05:23:50,122 INFO L158 Benchmark]: Boogie Preprocessor took 74.36ms. Allocated memory is still 151.0MB. Free memory was 86.0MB in the beginning and 83.3MB in the end (delta: 2.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-19 05:23:50,123 INFO L158 Benchmark]: RCFGBuilder took 1398.71ms. Allocated memory is still 151.0MB. Free memory was 83.0MB in the beginning and 82.1MB in the end (delta: 920.7kB). Peak memory consumption was 24.6MB. Max. memory is 16.1GB. [2023-11-19 05:23:50,124 INFO L158 Benchmark]: TraceAbstraction took 1044.83ms. Allocated memory was 151.0MB in the beginning and 207.6MB in the end (delta: 56.6MB). Free memory was 81.4MB in the beginning and 144.7MB in the end (delta: -63.3MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 05:23:50,124 INFO L158 Benchmark]: Witness Printer took 5.99ms. Allocated memory is still 207.6MB. Free memory is still 144.7MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 05:23:50,129 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 117.4MB. Free memory is still 66.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 395.71ms. Allocated memory is still 151.0MB. Free memory was 106.8MB in the beginning and 92.7MB in the end (delta: 14.1MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 108.55ms. Allocated memory is still 151.0MB. Free memory was 92.7MB in the beginning and 86.0MB in the end (delta: 6.6MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Preprocessor took 74.36ms. Allocated memory is still 151.0MB. Free memory was 86.0MB in the beginning and 83.3MB in the end (delta: 2.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 1398.71ms. Allocated memory is still 151.0MB. Free memory was 83.0MB in the beginning and 82.1MB in the end (delta: 920.7kB). Peak memory consumption was 24.6MB. Max. memory is 16.1GB. * TraceAbstraction took 1044.83ms. Allocated memory was 151.0MB in the beginning and 207.6MB in the end (delta: 56.6MB). Free memory was 81.4MB in the beginning and 144.7MB in the end (delta: -63.3MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 5.99ms. Allocated memory is still 207.6MB. Free memory is still 144.7MB. 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 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_5 mask_SORT_5 = (SORT_5)-1 >> (sizeof(SORT_5) * 8 - 3); [L30] const SORT_5 msb_SORT_5 = (SORT_5)1 << (3 - 1); [L32] const SORT_1 var_11 = 0; [L33] const SORT_5 var_15 = 0; [L34] const SORT_5 var_21 = 1; [L35] const SORT_1 var_31 = 1; [L37] SORT_1 input_2; [L38] SORT_1 input_3; [L39] SORT_1 input_4; [L40] SORT_5 input_6; [L41] SORT_5 input_7; [L42] SORT_1 input_8; [L43] SORT_5 input_9; [L44] SORT_5 input_10; [L46] EXPR __VERIFIER_nondet_uchar() & mask_SORT_1 [L46] SORT_1 state_12 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L47] EXPR __VERIFIER_nondet_uchar() & mask_SORT_5 [L47] SORT_5 state_16 = __VERIFIER_nondet_uchar() & mask_SORT_5; [L48] EXPR __VERIFIER_nondet_uchar() & mask_SORT_1 [L48] SORT_1 state_18 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L49] EXPR __VERIFIER_nondet_uchar() & mask_SORT_5 [L49] SORT_5 state_23 = __VERIFIER_nondet_uchar() & mask_SORT_5; [L51] SORT_1 init_13_arg_1 = var_11; [L52] state_12 = init_13_arg_1 [L53] SORT_5 init_17_arg_1 = var_15; [L54] state_16 = init_17_arg_1 [L55] SORT_1 init_19_arg_1 = var_11; [L56] state_18 = init_19_arg_1 [L57] SORT_5 init_24_arg_1 = var_15; [L58] state_23 = init_24_arg_1 VAL [init_13_arg_1=0, init_17_arg_1=0, init_19_arg_1=0, init_24_arg_1=0, mask_SORT_1=1, mask_SORT_5=7, msb_SORT_1=1, msb_SORT_5=4, state_12=0, state_16=0, state_18=0, state_23=0, var_11=0, var_15=0, var_21=1, var_31=1] [L61] input_2 = __VERIFIER_nondet_uchar() [L62] EXPR input_2 & mask_SORT_1 [L62] input_2 = input_2 & mask_SORT_1 [L63] input_3 = __VERIFIER_nondet_uchar() [L64] EXPR input_3 & mask_SORT_1 [L64] input_3 = input_3 & mask_SORT_1 [L65] input_4 = __VERIFIER_nondet_uchar() [L66] input_6 = __VERIFIER_nondet_uchar() [L67] input_7 = __VERIFIER_nondet_uchar() [L68] input_8 = __VERIFIER_nondet_uchar() [L69] input_9 = __VERIFIER_nondet_uchar() [L70] input_10 = __VERIFIER_nondet_uchar() [L73] SORT_1 var_14_arg_0 = state_12; [L74] SORT_1 var_14 = ~var_14_arg_0; [L75] SORT_1 var_20_arg_0 = state_18; [L76] SORT_5 var_20_arg_1 = state_16; [L77] SORT_5 var_20_arg_2 = input_7; [L78] SORT_5 var_20 = var_20_arg_0 ? var_20_arg_1 : var_20_arg_2; [L79] EXPR var_20 & mask_SORT_5 [L79] var_20 = var_20 & mask_SORT_5 [L80] SORT_5 var_22_arg_0 = var_20; [L81] SORT_5 var_22_arg_1 = var_21; [L82] SORT_1 var_22 = var_22_arg_0 == var_22_arg_1; [L83] SORT_1 var_25_arg_0 = state_18; [L84] SORT_5 var_25_arg_1 = state_23; [L85] SORT_5 var_25_arg_2 = input_7; [L86] SORT_5 var_25 = var_25_arg_0 ? var_25_arg_1 : var_25_arg_2; [L87] EXPR var_25 & mask_SORT_5 [L87] var_25 = var_25 & mask_SORT_5 [L88] SORT_5 var_26_arg_0 = var_25; [L89] SORT_5 var_26_arg_1 = var_21; [L90] SORT_1 var_26 = var_26_arg_0 == var_26_arg_1; [L91] SORT_1 var_27_arg_0 = var_22; [L92] SORT_1 var_27_arg_1 = var_26; [L93] SORT_1 var_27 = var_27_arg_0 == var_27_arg_1; [L94] SORT_1 var_28_arg_0 = var_14; [L95] SORT_1 var_28_arg_1 = var_27; [L96] EXPR var_28_arg_0 | var_28_arg_1 [L96] SORT_1 var_28 = var_28_arg_0 | var_28_arg_1; [L97] SORT_1 var_32_arg_0 = var_28; [L98] SORT_1 var_32 = ~var_32_arg_0; [L99] SORT_1 var_33_arg_0 = var_31; [L100] SORT_1 var_33_arg_1 = var_32; [L101] EXPR var_33_arg_0 & var_33_arg_1 [L101] SORT_1 var_33 = var_33_arg_0 & var_33_arg_1; [L102] EXPR var_33 & mask_SORT_1 [L102] var_33 = var_33 & mask_SORT_1 [L103] SORT_1 bad_34_arg_0 = var_33; [L104] CALL __VERIFIER_assert(!(bad_34_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: 0.9s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=7occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2023-11-19 05:23:50,177 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ee5f10-6bc1-4e1f-bd82-cbf870f0ddbc/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-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ee5f10-6bc1-4e1f-bd82-cbf870f0ddbc/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ee5f10-6bc1-4e1f-bd82-cbf870f0ddbc/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_56ee5f10-6bc1-4e1f-bd82-cbf870f0ddbc/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ee5f10-6bc1-4e1f-bd82-cbf870f0ddbc/bin/utaipan-verify-t7M7D8N6sZ/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal57.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ee5f10-6bc1-4e1f-bd82-cbf870f0ddbc/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_56ee5f10-6bc1-4e1f-bd82-cbf870f0ddbc/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 2328acd9311a64c53ad5874211f9b9da337dc2131958a2367da03f2374a4827a --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 05:23:53,417 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 05:23:53,526 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ee5f10-6bc1-4e1f-bd82-cbf870f0ddbc/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2023-11-19 05:23:53,534 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 05:23:53,535 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 05:23:53,569 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 05:23:53,570 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 05:23:53,570 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 05:23:53,572 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 05:23:53,572 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 05:23:53,573 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 05:23:53,574 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 05:23:53,575 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 05:23:53,576 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 05:23:53,576 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 05:23:53,577 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 05:23:53,579 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 05:23:53,579 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 05:23:53,580 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 05:23:53,581 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 05:23:53,582 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 05:23:53,583 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 05:23:53,584 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-19 05:23:53,584 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-19 05:23:53,585 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-19 05:23:53,586 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 05:23:53,587 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 05:23:53,587 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 05:23:53,588 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 05:23:53,589 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 05:23:53,590 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:23:53,590 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 05:23:53,591 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 05:23:53,592 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 05:23:53,593 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-11-19 05:23:53,594 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-19 05:23:53,594 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 05:23:53,595 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 05:23:53,596 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 05:23:53,597 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_56ee5f10-6bc1-4e1f-bd82-cbf870f0ddbc/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ee5f10-6bc1-4e1f-bd82-cbf870f0ddbc/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2328acd9311a64c53ad5874211f9b9da337dc2131958a2367da03f2374a4827a [2023-11-19 05:23:54,126 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 05:23:54,166 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 05:23:54,170 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 05:23:54,173 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 05:23:54,174 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 05:23:54,176 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ee5f10-6bc1-4e1f-bd82-cbf870f0ddbc/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal57.c [2023-11-19 05:23:58,013 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 05:23:58,378 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 05:23:58,378 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ee5f10-6bc1-4e1f-bd82-cbf870f0ddbc/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal57.c [2023-11-19 05:23:58,390 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ee5f10-6bc1-4e1f-bd82-cbf870f0ddbc/bin/utaipan-verify-t7M7D8N6sZ/data/ee720344d/c9f2a84e348644ee9584a384427286bc/FLAG4a03cf4f6 [2023-11-19 05:23:58,407 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ee5f10-6bc1-4e1f-bd82-cbf870f0ddbc/bin/utaipan-verify-t7M7D8N6sZ/data/ee720344d/c9f2a84e348644ee9584a384427286bc [2023-11-19 05:23:58,410 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 05:23:58,412 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 05:23:58,414 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 05:23:58,414 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 05:23:58,427 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 05:23:58,429 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:23:58" (1/1) ... [2023-11-19 05:23:58,430 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@64423e4f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:23:58, skipping insertion in model container [2023-11-19 05:23:58,430 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:23:58" (1/1) ... [2023-11-19 05:23:58,459 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 05:23:58,635 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_56ee5f10-6bc1-4e1f-bd82-cbf870f0ddbc/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal57.c[1245,1258] [2023-11-19 05:23:58,696 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:23:58,715 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 05:23:58,729 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_56ee5f10-6bc1-4e1f-bd82-cbf870f0ddbc/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal57.c[1245,1258] [2023-11-19 05:23:58,762 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:23:58,780 INFO L206 MainTranslator]: Completed translation [2023-11-19 05:23:58,781 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:23:58 WrapperNode [2023-11-19 05:23:58,781 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 05:23:58,782 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 05:23:58,783 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 05:23:58,783 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 05:23:58,792 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:23:58" (1/1) ... [2023-11-19 05:23:58,806 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:23:58" (1/1) ... [2023-11-19 05:23:58,879 INFO L138 Inliner]: procedures = 17, calls = 16, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 186 [2023-11-19 05:23:58,879 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 05:23:58,880 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 05:23:58,881 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 05:23:58,881 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 05:23:58,910 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:23:58" (1/1) ... [2023-11-19 05:23:58,911 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:23:58" (1/1) ... [2023-11-19 05:23:58,932 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:23:58" (1/1) ... [2023-11-19 05:23:58,933 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:23:58" (1/1) ... [2023-11-19 05:23:58,944 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:23:58" (1/1) ... [2023-11-19 05:23:58,956 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:23:58" (1/1) ... [2023-11-19 05:23:58,959 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:23:58" (1/1) ... [2023-11-19 05:23:58,962 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:23:58" (1/1) ... [2023-11-19 05:23:58,966 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 05:23:58,968 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 05:23:58,968 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 05:23:58,968 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 05:23:58,969 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:23:58" (1/1) ... [2023-11-19 05:23:58,976 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:23:58,992 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ee5f10-6bc1-4e1f-bd82-cbf870f0ddbc/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:23:59,007 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ee5f10-6bc1-4e1f-bd82-cbf870f0ddbc/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 05:23:59,056 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ee5f10-6bc1-4e1f-bd82-cbf870f0ddbc/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 05:23:59,073 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 05:23:59,073 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-19 05:23:59,074 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 05:23:59,074 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 05:23:59,246 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 05:23:59,249 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 05:23:59,638 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 05:23:59,646 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 05:23:59,646 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-19 05:23:59,650 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:23:59 BoogieIcfgContainer [2023-11-19 05:23:59,650 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 05:23:59,679 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 05:23:59,679 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 05:23:59,683 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 05:23:59,684 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 05:23:58" (1/3) ... [2023-11-19 05:23:59,685 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6616d7f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:23:59, skipping insertion in model container [2023-11-19 05:23:59,685 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:23:58" (2/3) ... [2023-11-19 05:23:59,686 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6616d7f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:23:59, skipping insertion in model container [2023-11-19 05:23:59,686 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:23:59" (3/3) ... [2023-11-19 05:23:59,688 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.cal57.c [2023-11-19 05:23:59,712 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 05:23:59,712 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-19 05:23:59,776 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 05:23:59,786 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;@5924f9a8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-19 05:23:59,787 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-19 05:23:59,793 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 05:23:59,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-19 05:23:59,802 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:23:59,802 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-19 05:23:59,803 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:23:59,811 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:23:59,812 INFO L85 PathProgramCache]: Analyzing trace with hash 28698761, now seen corresponding path program 1 times [2023-11-19 05:23:59,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 05:23:59,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1346636612] [2023-11-19 05:23:59,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:23:59,830 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 05:23:59,831 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ee5f10-6bc1-4e1f-bd82-cbf870f0ddbc/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 05:23:59,834 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ee5f10-6bc1-4e1f-bd82-cbf870f0ddbc/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 05:23:59,871 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ee5f10-6bc1-4e1f-bd82-cbf870f0ddbc/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 05:24:00,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:24:00,033 INFO L262 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-19 05:24:00,047 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:24:00,353 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 05:24:00,354 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:24:00,355 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 05:24:00,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1346636612] [2023-11-19 05:24:00,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1346636612] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:24:00,357 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:24:00,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 05:24:00,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247958507] [2023-11-19 05:24:00,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:24:00,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 05:24:00,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 05:24:00,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 05:24:00,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 05:24:00,403 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 05:24:00,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:24:00,467 INFO L93 Difference]: Finished difference Result 19 states and 27 transitions. [2023-11-19 05:24:00,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 05:24:00,470 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 05:24:00,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:24:00,478 INFO L225 Difference]: With dead ends: 19 [2023-11-19 05:24:00,479 INFO L226 Difference]: Without dead ends: 10 [2023-11-19 05:24:00,482 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 05:24:00,487 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 05:24:00,488 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 05:24:00,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2023-11-19 05:24:00,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 9. [2023-11-19 05:24:00,521 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 05:24:00,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2023-11-19 05:24:00,524 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 5 [2023-11-19 05:24:00,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:24:00,524 INFO L495 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2023-11-19 05:24:00,525 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 05:24:00,525 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2023-11-19 05:24:00,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-19 05:24:00,526 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:24:00,526 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2023-11-19 05:24:00,530 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ee5f10-6bc1-4e1f-bd82-cbf870f0ddbc/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 05:24:00,729 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ee5f10-6bc1-4e1f-bd82-cbf870f0ddbc/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 05:24:00,729 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:24:00,730 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:24:00,730 INFO L85 PathProgramCache]: Analyzing trace with hash 271073635, now seen corresponding path program 1 times [2023-11-19 05:24:00,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 05:24:00,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1262333527] [2023-11-19 05:24:00,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:24:00,732 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 05:24:00,733 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ee5f10-6bc1-4e1f-bd82-cbf870f0ddbc/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 05:24:00,734 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ee5f10-6bc1-4e1f-bd82-cbf870f0ddbc/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 05:24:00,761 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ee5f10-6bc1-4e1f-bd82-cbf870f0ddbc/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 05:24:00,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:24:00,930 INFO L262 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 39 conjunts are in the unsatisfiable core [2023-11-19 05:24:00,935 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:24:01,610 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 05:24:01,610 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 05:24:03,626 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 05:24:03,627 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 05:24:03,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1262333527] [2023-11-19 05:24:03,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1262333527] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 05:24:03,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1255884697] [2023-11-19 05:24:03,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:24:03,629 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-19 05:24:03,629 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ee5f10-6bc1-4e1f-bd82-cbf870f0ddbc/bin/utaipan-verify-t7M7D8N6sZ/cvc4 [2023-11-19 05:24:03,671 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ee5f10-6bc1-4e1f-bd82-cbf870f0ddbc/bin/utaipan-verify-t7M7D8N6sZ/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-19 05:24:03,698 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ee5f10-6bc1-4e1f-bd82-cbf870f0ddbc/bin/utaipan-verify-t7M7D8N6sZ/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2023-11-19 05:24:03,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:24:03,965 INFO L262 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 49 conjunts are in the unsatisfiable core [2023-11-19 05:24:03,973 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:24:04,563 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 05:24:04,564 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 05:24:06,309 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 05:24:06,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1255884697] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 05:24:06,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2040612581] [2023-11-19 05:24:06,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:24:06,311 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:24:06,312 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ee5f10-6bc1-4e1f-bd82-cbf870f0ddbc/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:24:06,317 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ee5f10-6bc1-4e1f-bd82-cbf870f0ddbc/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:24:06,345 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ee5f10-6bc1-4e1f-bd82-cbf870f0ddbc/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-19 05:24:06,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:24:06,472 INFO L262 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 46 conjunts are in the unsatisfiable core [2023-11-19 05:24:06,477 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:24:07,007 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 05:24:07,007 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 05:24:08,722 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 05:24:08,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2040612581] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 05:24:08,723 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2023-11-19 05:24:08,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 6, 5, 6, 6] total 12 [2023-11-19 05:24:08,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742535058] [2023-11-19 05:24:08,724 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2023-11-19 05:24:08,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-19 05:24:08,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 05:24:08,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-19 05:24:08,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2023-11-19 05:24:08,728 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand has 12 states, 12 states have (on average 1.9166666666666667) internal successors, (23), 12 states have internal predecessors, (23), 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 05:24:08,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:24:08,950 INFO L93 Difference]: Finished difference Result 15 states and 15 transitions. [2023-11-19 05:24:08,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-19 05:24:08,951 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 1.9166666666666667) internal successors, (23), 12 states have internal predecessors, (23), 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 8 [2023-11-19 05:24:08,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:24:08,952 INFO L225 Difference]: With dead ends: 15 [2023-11-19 05:24:08,952 INFO L226 Difference]: Without dead ends: 13 [2023-11-19 05:24:08,953 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 28 SyntacticMatches, 4 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2023-11-19 05:24:08,955 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 16 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 05:24:08,956 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 18 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 05:24:08,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2023-11-19 05:24:08,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 12. [2023-11-19 05:24:08,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 11 states have internal predecessors, (12), 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 05:24:08,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2023-11-19 05:24:08,962 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 8 [2023-11-19 05:24:08,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:24:08,963 INFO L495 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2023-11-19 05:24:08,963 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 1.9166666666666667) internal successors, (23), 12 states have internal predecessors, (23), 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 05:24:08,964 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2023-11-19 05:24:08,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-19 05:24:08,965 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:24:08,965 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-11-19 05:24:08,996 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ee5f10-6bc1-4e1f-bd82-cbf870f0ddbc/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-19 05:24:09,193 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ee5f10-6bc1-4e1f-bd82-cbf870f0ddbc/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)] Forceful destruction successful, exit code 0 [2023-11-19 05:24:09,392 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ee5f10-6bc1-4e1f-bd82-cbf870f0ddbc/bin/utaipan-verify-t7M7D8N6sZ/cvc4 --incremental --print-success --lang smt (4)] Forceful destruction successful, exit code 0 [2023-11-19 05:24:09,589 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ee5f10-6bc1-4e1f-bd82-cbf870f0ddbc/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ee5f10-6bc1-4e1f-bd82-cbf870f0ddbc/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=3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ee5f10-6bc1-4e1f-bd82-cbf870f0ddbc/bin/utaipan-verify-t7M7D8N6sZ/cvc4 --incremental --print-success --lang smt [2023-11-19 05:24:09,590 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:24:09,591 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:24:09,591 INFO L85 PathProgramCache]: Analyzing trace with hash 1020920393, now seen corresponding path program 2 times [2023-11-19 05:24:09,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 05:24:09,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1486572944] [2023-11-19 05:24:09,592 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-19 05:24:09,593 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 05:24:09,593 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ee5f10-6bc1-4e1f-bd82-cbf870f0ddbc/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 05:24:09,595 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ee5f10-6bc1-4e1f-bd82-cbf870f0ddbc/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 05:24:09,621 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ee5f10-6bc1-4e1f-bd82-cbf870f0ddbc/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 (6)] Waiting until timeout for monitored process [2023-11-19 05:24:09,816 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-19 05:24:09,816 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 05:24:09,824 INFO L262 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 104 conjunts are in the unsatisfiable core [2023-11-19 05:24:09,834 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:24:12,250 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:24:12,250 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 05:24:30,297 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ zero_extend 24) |c_ULTIMATE.start_main_~mask_SORT_1~0#1|))) (let ((.cse14 (forall ((|v_ULTIMATE.start_main_~var_33_arg_0~0#1_14| (_ BitVec 8)) (|v_ULTIMATE.start_main_~var_28_arg_0~0#1_14| (_ BitVec 8))) (= ((_ extract 7 0) (bvand .cse0 ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_33_arg_0~0#1_14|) ((_ zero_extend 24) ((_ extract 7 0) (bvnot ((_ zero_extend 24) ((_ extract 7 0) (bvor (_ bv0 32) ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_28_arg_0~0#1_14|)))))))))))) (_ bv0 8)))) (.cse5 (forall ((|v_ULTIMATE.start_main_~var_33_arg_0~0#1_14| (_ BitVec 8)) (|v_ULTIMATE.start_main_~var_28_arg_0~0#1_14| (_ BitVec 8))) (= ((_ extract 7 0) (bvand .cse0 ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) ((_ extract 7 0) (bvnot ((_ zero_extend 24) ((_ extract 7 0) (bvor (_ bv1 32) ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_28_arg_0~0#1_14|))))))) ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_33_arg_0~0#1_14|)))))) (_ bv0 8)))) (.cse6 ((_ zero_extend 24) |c_ULTIMATE.start_main_~mask_SORT_5~0#1|)) (.cse7 ((_ zero_extend 24) |c_ULTIMATE.start_main_~var_21~0#1|))) (let ((.cse26 (let ((.cse32 (forall ((|v_ULTIMATE.start_main_~var_25_arg_2~0#1_14| (_ BitVec 8))) (= ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_25_arg_2~0#1_14|))) .cse6))) .cse7))) (.cse33 (forall ((|v_ULTIMATE.start_main_~var_25_arg_2~0#1_14| (_ BitVec 8))) (not (= ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_25_arg_2~0#1_14|))) .cse6))) .cse7))))) (and (or (forall ((|v_ULTIMATE.start_main_~var_20_arg_2~0#1_14| (_ BitVec 8))) (= ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_20_arg_2~0#1_14|))) .cse6))) .cse7)) (and (or .cse5 .cse32) (or .cse14 .cse33))) (or (forall ((|v_ULTIMATE.start_main_~var_20_arg_2~0#1_14| (_ BitVec 8))) (not (= ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_20_arg_2~0#1_14|))) .cse6))) .cse7))) (and (or .cse14 .cse32) (or .cse5 .cse33)))))) (.cse31 (= ((_ extract 7 0) (bvand .cse0 ((_ zero_extend 24) ((_ extract 7 0) (bvnot ((_ zero_extend 24) |c_ULTIMATE.start_main_~state_12~0#1|)))))) (_ bv0 8)))) (let ((.cse8 (= ((_ extract 7 0) (bvand .cse0 ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) |c_ULTIMATE.start_main_~var_31~0#1|))))))) (_ bv0 8))) (.cse25 (= |c_ULTIMATE.start_main_~var_11~0#1| (_ bv0 8))) (.cse3 (not .cse31)) (.cse9 (or (and (or (forall ((|v_ULTIMATE.start_main_~var_61_arg_1~0#1_11| (_ BitVec 8))) (not (= ((_ extract 7 0) (bvand .cse0 ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_61_arg_1~0#1_11|))))) (_ bv0 8)))) .cse26) (or (let ((.cse30 (forall ((|v_ULTIMATE.start_main_~var_64_arg_1~0#1_11| (_ BitVec 8))) (not (= ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_64_arg_1~0#1_11|))))) .cse6))) .cse7)))) (.cse29 (forall ((|v_ULTIMATE.start_main_~var_64_arg_1~0#1_11| (_ BitVec 8))) (= ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_64_arg_1~0#1_11|))))) .cse6))) .cse7)))) (and (or (and (or .cse14 .cse29) (or .cse30 .cse5)) (forall ((|v_ULTIMATE.start_main_~var_58_arg_1~0#1_11| (_ BitVec 8))) (not (= ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_58_arg_1~0#1_11|))))) .cse6))) .cse7)))) (or (and (or .cse30 .cse14) (or .cse5 .cse29)) (forall ((|v_ULTIMATE.start_main_~var_58_arg_1~0#1_11| (_ BitVec 8))) (= ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_58_arg_1~0#1_11|))))) .cse6))) .cse7))))) (forall ((|v_ULTIMATE.start_main_~var_61_arg_1~0#1_11| (_ BitVec 8))) (= ((_ extract 7 0) (bvand .cse0 ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_61_arg_1~0#1_11|))))) (_ bv0 8))))) .cse31))) (let ((.cse10 (= |c_ULTIMATE.start_main_~input_2~0#1| (_ bv0 8))) (.cse1 (or .cse25 (and (or .cse3 (and (or (forall ((|v_ULTIMATE.start_main_~var_60_arg_1~0#1_11| (_ BitVec 8))) (= ((_ extract 7 0) (bvand .cse0 ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_60_arg_1~0#1_11|))))))) (_ bv0 8))) (let ((.cse27 (forall ((|v_ULTIMATE.start_main_~var_63_arg_1~0#1_11| (_ BitVec 8))) (= .cse7 ((_ zero_extend 24) ((_ extract 7 0) (bvand .cse6 ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_63_arg_1~0#1_11|))))))))))))) (.cse28 (forall ((|v_ULTIMATE.start_main_~var_63_arg_1~0#1_11| (_ BitVec 8))) (not (= .cse7 ((_ zero_extend 24) ((_ extract 7 0) (bvand .cse6 ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_63_arg_1~0#1_11|))))))))))))))) (and (or (forall ((|v_ULTIMATE.start_main_~var_57_arg_1~0#1_11| (_ BitVec 8))) (= ((_ zero_extend 24) ((_ extract 7 0) (bvand .cse6 ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_57_arg_1~0#1_11|)))))))))) .cse7)) (and (or .cse5 .cse27) (or .cse14 .cse28))) (or (forall ((|v_ULTIMATE.start_main_~var_57_arg_1~0#1_11| (_ BitVec 8))) (not (= ((_ zero_extend 24) ((_ extract 7 0) (bvand .cse6 ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_57_arg_1~0#1_11|)))))))))) .cse7))) (and (or .cse14 .cse27) (or .cse5 .cse28)))))) (or (forall ((|v_ULTIMATE.start_main_~var_60_arg_1~0#1_11| (_ BitVec 8))) (not (= ((_ extract 7 0) (bvand .cse0 ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_60_arg_1~0#1_11|))))))) (_ bv0 8)))) .cse26))) .cse9))) (.cse4 (or (not .cse8) .cse26)) (.cse18 ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) |c_ULTIMATE.start_main_~var_20~0#1|)))))))))) (.cse19 ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) |c_ULTIMATE.start_main_~var_25~0#1|)))))))))) (.cse2 (not .cse25))) (let ((.cse20 (= (_ bv0 8) |c_ULTIMATE.start_main_~input_3~0#1|)) (.cse11 (or (not .cse10) (and .cse1 (or (and (or .cse3 (and .cse4 (or (let ((.cse24 (= ((_ zero_extend 24) ((_ extract 7 0) (bvand .cse6 .cse19))) .cse7))) (let ((.cse22 (= ((_ zero_extend 24) ((_ extract 7 0) (bvand .cse18 .cse6))) .cse7)) (.cse23 (not .cse24))) (and (or (not .cse22) (and (or .cse5 .cse23) (or .cse14 .cse24))) (or .cse22 (and (or .cse14 .cse23) (or .cse5 .cse24)))))) .cse8))) .cse9) .cse2))))) (let ((.cse13 (or .cse20 (and (or (and .cse1 (or (and (or .cse3 (and (or (let ((.cse21 (= ((_ zero_extend 24) ((_ extract 7 0) (bvand .cse6 ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) |c_ULTIMATE.start_main_~var_15~0#1|)))))))))))))) .cse7))) (and (or .cse5 (not .cse21)) (or .cse5 .cse21))) .cse8) .cse4)) .cse9) .cse2)) .cse10) .cse11))) (.cse12 (not .cse20))) (and (or (forall ((|v_ULTIMATE.start_main_~var_35_arg_0~0#1_11| (_ BitVec 8))) (= ((_ extract 7 0) (bvand .cse0 ((_ zero_extend 24) ((_ extract 7 0) (bvnot ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_35_arg_0~0#1_11|)))))) (_ bv0 8))) (and (or (and (or (and .cse1 (or .cse2 (and (or .cse3 (and .cse4 (or (and (or .cse5 (forall ((|ULTIMATE.start_main_~input_6~0#1| (_ BitVec 8))) (not (= ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) |ULTIMATE.start_main_~input_6~0#1|))))))))))))) .cse6))) .cse7)))) (or .cse5 (forall ((|ULTIMATE.start_main_~input_6~0#1| (_ BitVec 8))) (= ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) |ULTIMATE.start_main_~input_6~0#1|))))))))))))) .cse6))) .cse7)))) .cse8))) .cse9))) .cse10) .cse11) .cse12) .cse13)) (or (and .cse13 (or (and (or (and (or .cse2 (and (or .cse3 (and .cse4 (or (let ((.cse16 (= ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) ((_ extract 7 0) .cse19)))) .cse6))) .cse7))) (let ((.cse15 (not .cse16)) (.cse17 (= ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) ((_ extract 7 0) .cse18)))) .cse6))) .cse7))) (and (or (and (or .cse14 .cse15) (or .cse5 .cse16)) .cse17) (or (and (or .cse5 .cse15) (or .cse14 .cse16)) (not .cse17))))) .cse8))) .cse9)) .cse1) .cse10) .cse11) .cse12)) (forall ((|v_ULTIMATE.start_main_~var_35_arg_0~0#1_11| (_ BitVec 8))) (not (= ((_ extract 7 0) (bvand .cse0 ((_ zero_extend 24) ((_ extract 7 0) (bvnot ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_35_arg_0~0#1_11|)))))) (_ bv0 8))))))))))))) is different from false