./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal2.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cf1a7837 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fc19f79-e1c4-49d6-b28f-347df7fb7d1d/bin/utaipan-verify-NcY6lQBIFX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fc19f79-e1c4-49d6-b28f-347df7fb7d1d/bin/utaipan-verify-NcY6lQBIFX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fc19f79-e1c4-49d6-b28f-347df7fb7d1d/bin/utaipan-verify-NcY6lQBIFX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fc19f79-e1c4-49d6-b28f-347df7fb7d1d/bin/utaipan-verify-NcY6lQBIFX/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fc19f79-e1c4-49d6-b28f-347df7fb7d1d/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fc19f79-e1c4-49d6-b28f-347df7fb7d1d/bin/utaipan-verify-NcY6lQBIFX --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 e845250638bf2269b9610642a85a2d027126b83f570f70da1feb220fdec8c1ec --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 00:53:27,327 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 00:53:27,463 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fc19f79-e1c4-49d6-b28f-347df7fb7d1d/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-11-12 00:53:27,472 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 00:53:27,473 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 00:53:27,522 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 00:53:27,523 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 00:53:27,524 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 00:53:27,525 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 00:53:27,531 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 00:53:27,532 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-12 00:53:27,533 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-12 00:53:27,533 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-12 00:53:27,535 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-12 00:53:27,536 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-12 00:53:27,536 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-12 00:53:27,537 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-12 00:53:27,537 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-12 00:53:27,538 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-12 00:53:27,538 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-12 00:53:27,541 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-12 00:53:27,541 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-12 00:53:27,543 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 00:53:27,544 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 00:53:27,544 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 00:53:27,545 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 00:53:27,545 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 00:53:27,546 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 00:53:27,546 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 00:53:27,547 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 00:53:27,548 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 00:53:27,549 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 00:53:27,549 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 00:53:27,549 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:53:27,549 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 00:53:27,550 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 00:53:27,550 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 00:53:27,550 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-12 00:53:27,551 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 00:53:27,551 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 00:53:27,551 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-12 00:53:27,552 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 00:53:27,552 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_9fc19f79-e1c4-49d6-b28f-347df7fb7d1d/bin/utaipan-verify-NcY6lQBIFX/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fc19f79-e1c4-49d6-b28f-347df7fb7d1d/bin/utaipan-verify-NcY6lQBIFX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e845250638bf2269b9610642a85a2d027126b83f570f70da1feb220fdec8c1ec [2023-11-12 00:53:27,958 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 00:53:28,000 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 00:53:28,004 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 00:53:28,006 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 00:53:28,007 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 00:53:28,008 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fc19f79-e1c4-49d6-b28f-347df7fb7d1d/bin/utaipan-verify-NcY6lQBIFX/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal2.c [2023-11-12 00:53:31,403 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 00:53:31,733 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 00:53:31,734 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fc19f79-e1c4-49d6-b28f-347df7fb7d1d/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal2.c [2023-11-12 00:53:31,756 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fc19f79-e1c4-49d6-b28f-347df7fb7d1d/bin/utaipan-verify-NcY6lQBIFX/data/f68d25f33/c4513ba1972a4da2ad6ec920670330a0/FLAG3b6746523 [2023-11-12 00:53:31,772 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fc19f79-e1c4-49d6-b28f-347df7fb7d1d/bin/utaipan-verify-NcY6lQBIFX/data/f68d25f33/c4513ba1972a4da2ad6ec920670330a0 [2023-11-12 00:53:31,775 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 00:53:31,776 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 00:53:31,778 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 00:53:31,778 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 00:53:31,795 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 00:53:31,797 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:53:31" (1/1) ... [2023-11-12 00:53:31,798 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6673e5c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:53:31, skipping insertion in model container [2023-11-12 00:53:31,798 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:53:31" (1/1) ... [2023-11-12 00:53:31,887 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 00:53:32,069 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_9fc19f79-e1c4-49d6-b28f-347df7fb7d1d/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal2.c[1244,1257] [2023-11-12 00:53:32,430 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:53:32,451 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 00:53:32,490 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_9fc19f79-e1c4-49d6-b28f-347df7fb7d1d/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal2.c[1244,1257] [2023-11-12 00:53:32,688 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:53:32,703 INFO L206 MainTranslator]: Completed translation [2023-11-12 00:53:32,704 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:53:32 WrapperNode [2023-11-12 00:53:32,705 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 00:53:32,706 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 00:53:32,706 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 00:53:32,706 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 00:53:32,714 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:53:32" (1/1) ... [2023-11-12 00:53:32,777 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:53:32" (1/1) ... [2023-11-12 00:53:33,075 INFO L138 Inliner]: procedures = 17, calls = 15, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 2540 [2023-11-12 00:53:33,076 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 00:53:33,077 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 00:53:33,077 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 00:53:33,078 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 00:53:33,087 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:53:32" (1/1) ... [2023-11-12 00:53:33,087 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:53:32" (1/1) ... [2023-11-12 00:53:33,134 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:53:32" (1/1) ... [2023-11-12 00:53:33,134 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:53:32" (1/1) ... [2023-11-12 00:53:33,227 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:53:32" (1/1) ... [2023-11-12 00:53:33,255 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:53:32" (1/1) ... [2023-11-12 00:53:33,284 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:53:32" (1/1) ... [2023-11-12 00:53:33,347 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:53:32" (1/1) ... [2023-11-12 00:53:33,406 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 00:53:33,408 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 00:53:33,408 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 00:53:33,409 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 00:53:33,410 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:53:32" (1/1) ... [2023-11-12 00:53:33,417 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:53:33,431 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fc19f79-e1c4-49d6-b28f-347df7fb7d1d/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:53:33,451 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fc19f79-e1c4-49d6-b28f-347df7fb7d1d/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 00:53:33,515 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fc19f79-e1c4-49d6-b28f-347df7fb7d1d/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 00:53:33,565 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 00:53:33,566 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 00:53:33,566 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 00:53:33,566 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 00:53:33,955 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 00:53:33,958 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 00:53:36,683 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 00:53:42,162 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 00:53:42,163 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-12 00:53:42,168 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:53:42 BoogieIcfgContainer [2023-11-12 00:53:42,170 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 00:53:42,172 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 00:53:42,173 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 00:53:42,176 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 00:53:42,177 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 12:53:31" (1/3) ... [2023-11-12 00:53:42,177 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6dce1a31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:53:42, skipping insertion in model container [2023-11-12 00:53:42,178 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:53:32" (2/3) ... [2023-11-12 00:53:42,180 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6dce1a31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:53:42, skipping insertion in model container [2023-11-12 00:53:42,181 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:53:42" (3/3) ... [2023-11-12 00:53:42,182 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.cal2.c [2023-11-12 00:53:42,202 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 00:53:42,202 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-12 00:53:42,260 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 00:53:42,268 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;@468dc946, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-12 00:53:42,268 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-12 00:53:42,273 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) [2023-11-12 00:53:42,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-11-12 00:53:42,280 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:53:42,281 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-11-12 00:53:42,282 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:53:42,286 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:53:42,286 INFO L85 PathProgramCache]: Analyzing trace with hash 67864109, now seen corresponding path program 1 times [2023-11-12 00:53:42,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:53:42,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [254421254] [2023-11-12 00:53:42,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:53:42,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:53:43,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 00:53:43,053 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-12 00:53:43,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 00:53:43,474 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-11-12 00:53:43,477 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-12 00:53:43,478 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-12 00:53:43,480 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-12 00:53:43,485 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-11-12 00:53:43,490 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-11-12 00:53:43,547 WARN L321 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2023-11-12 00:53:43,575 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 12:53:43 BoogieIcfgContainer [2023-11-12 00:53:43,579 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-12 00:53:43,580 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-12 00:53:43,581 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-12 00:53:43,582 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-12 00:53:43,583 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:53:42" (3/4) ... [2023-11-12 00:53:43,585 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-12 00:53:43,587 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-12 00:53:43,589 INFO L158 Benchmark]: Toolchain (without parser) took 11812.62ms. Allocated memory was 119.5MB in the beginning and 608.2MB in the end (delta: 488.6MB). Free memory was 74.4MB in the beginning and 181.3MB in the end (delta: -106.9MB). Peak memory consumption was 383.4MB. Max. memory is 16.1GB. [2023-11-12 00:53:43,590 INFO L158 Benchmark]: CDTParser took 0.41ms. Allocated memory is still 119.5MB. Free memory was 92.9MB in the beginning and 92.8MB in the end (delta: 88.2kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-12 00:53:43,591 INFO L158 Benchmark]: CACSL2BoogieTranslator took 927.36ms. Allocated memory was 119.5MB in the beginning and 153.1MB in the end (delta: 33.6MB). Free memory was 74.1MB in the beginning and 104.2MB in the end (delta: -30.1MB). Peak memory consumption was 40.3MB. Max. memory is 16.1GB. [2023-11-12 00:53:43,592 INFO L158 Benchmark]: Boogie Procedure Inliner took 370.87ms. Allocated memory is still 153.1MB. Free memory was 104.2MB in the beginning and 95.4MB in the end (delta: 8.9MB). Peak memory consumption was 60.7MB. Max. memory is 16.1GB. [2023-11-12 00:53:43,597 INFO L158 Benchmark]: Boogie Preprocessor took 329.60ms. Allocated memory is still 153.1MB. Free memory was 95.4MB in the beginning and 85.8MB in the end (delta: 9.6MB). Peak memory consumption was 26.1MB. Max. memory is 16.1GB. [2023-11-12 00:53:43,599 INFO L158 Benchmark]: RCFGBuilder took 8762.14ms. Allocated memory was 153.1MB in the beginning and 608.2MB in the end (delta: 455.1MB). Free memory was 85.8MB in the beginning and 285.1MB in the end (delta: -199.3MB). Peak memory consumption was 285.6MB. Max. memory is 16.1GB. [2023-11-12 00:53:43,600 INFO L158 Benchmark]: TraceAbstraction took 1406.79ms. Allocated memory is still 608.2MB. Free memory was 284.0MB in the beginning and 182.3MB in the end (delta: 101.7MB). Peak memory consumption was 102.8MB. Max. memory is 16.1GB. [2023-11-12 00:53:43,601 INFO L158 Benchmark]: Witness Printer took 7.98ms. Allocated memory is still 608.2MB. Free memory was 182.3MB in the beginning and 181.3MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-12 00:53:43,606 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.41ms. Allocated memory is still 119.5MB. Free memory was 92.9MB in the beginning and 92.8MB in the end (delta: 88.2kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 927.36ms. Allocated memory was 119.5MB in the beginning and 153.1MB in the end (delta: 33.6MB). Free memory was 74.1MB in the beginning and 104.2MB in the end (delta: -30.1MB). Peak memory consumption was 40.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 370.87ms. Allocated memory is still 153.1MB. Free memory was 104.2MB in the beginning and 95.4MB in the end (delta: 8.9MB). Peak memory consumption was 60.7MB. Max. memory is 16.1GB. * Boogie Preprocessor took 329.60ms. Allocated memory is still 153.1MB. Free memory was 95.4MB in the beginning and 85.8MB in the end (delta: 9.6MB). Peak memory consumption was 26.1MB. Max. memory is 16.1GB. * RCFGBuilder took 8762.14ms. Allocated memory was 153.1MB in the beginning and 608.2MB in the end (delta: 455.1MB). Free memory was 85.8MB in the beginning and 285.1MB in the end (delta: -199.3MB). Peak memory consumption was 285.6MB. Max. memory is 16.1GB. * TraceAbstraction took 1406.79ms. Allocated memory is still 608.2MB. Free memory was 284.0MB in the beginning and 182.3MB in the end (delta: 101.7MB). Peak memory consumption was 102.8MB. Max. memory is 16.1GB. * Witness Printer took 7.98ms. Allocated memory is still 608.2MB. Free memory was 182.3MB in the beginning and 181.3MB in the end (delta: 1.0MB). 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 270, overapproximation of bitwiseAnd at line 199. 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_6 mask_SORT_6 = (SORT_6)-1 >> (sizeof(SORT_6) * 8 - 32); [L30] const SORT_6 msb_SORT_6 = (SORT_6)1 << (32 - 1); [L32] const SORT_10 mask_SORT_10 = (SORT_10)-1 >> (sizeof(SORT_10) * 8 - 4); [L33] const SORT_10 msb_SORT_10 = (SORT_10)1 << (4 - 1); [L35] const SORT_14 mask_SORT_14 = (SORT_14)-1 >> (sizeof(SORT_14) * 8 - 64); [L36] const SORT_14 msb_SORT_14 = (SORT_14)1 << (64 - 1); [L38] const SORT_121 mask_SORT_121 = (SORT_121)-1 >> (sizeof(SORT_121) * 8 - 2); [L39] const SORT_121 msb_SORT_121 = (SORT_121)1 << (2 - 1); [L41] const SORT_1 var_56 = 0; [L42] const SORT_6 var_60 = 0; [L43] const SORT_1 var_73 = 1; [L44] const SORT_14 var_77 = 0; [L45] const SORT_10 var_107 = 0; [L46] const SORT_10 var_116 = 2; [L47] const SORT_10 var_119 = 4; [L48] const SORT_10 var_126 = 1; [L49] const SORT_121 var_133 = 1; [L50] const SORT_121 var_136 = 3; [L51] const SORT_121 var_139 = 2; [L53] SORT_1 input_2; [L54] SORT_1 input_3; [L55] SORT_1 input_4; [L56] SORT_1 input_5; [L57] SORT_6 input_7; [L58] SORT_6 input_8; [L59] SORT_1 input_9; [L60] SORT_10 input_11; [L61] SORT_1 input_12; [L62] SORT_1 input_13; [L63] SORT_14 input_15; [L64] SORT_10 input_16; [L65] SORT_1 input_17; [L66] SORT_6 input_18; [L67] SORT_1 input_19; [L68] SORT_10 input_20; [L69] SORT_10 input_21; [L70] SORT_6 input_22; [L71] SORT_6 input_23; [L72] SORT_1 input_24; [L73] SORT_14 input_25; [L74] SORT_10 input_26; [L75] SORT_1 input_27; [L76] SORT_6 input_28; [L77] SORT_6 input_29; [L78] SORT_6 input_30; [L79] SORT_6 input_31; [L80] SORT_10 input_32; [L81] SORT_10 input_33; [L82] SORT_10 input_34; [L83] SORT_10 input_35; [L84] SORT_10 input_36; [L85] SORT_10 input_37; [L86] SORT_10 input_38; [L87] SORT_10 input_39; [L88] SORT_1 input_40; [L89] SORT_1 input_41; [L90] SORT_1 input_42; [L91] SORT_1 input_43; [L92] SORT_1 input_44; [L93] SORT_1 input_45; [L94] SORT_14 input_46; [L95] SORT_14 input_47; [L96] SORT_14 input_48; [L97] SORT_14 input_49; [L98] SORT_6 input_50; [L99] SORT_6 input_51; [L100] SORT_1 input_52; [L101] SORT_1 input_53; [L102] SORT_1 input_54; [L103] SORT_1 input_55; [L105] EXPR __VERIFIER_nondet_uchar() & mask_SORT_1 [L105] SORT_1 state_57 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L106] EXPR __VERIFIER_nondet_uint() & mask_SORT_6 [L106] SORT_6 state_61 = __VERIFIER_nondet_uint() & mask_SORT_6; [L107] EXPR __VERIFIER_nondet_uchar() & mask_SORT_1 [L107] SORT_1 state_63 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L108] EXPR __VERIFIER_nondet_uint() & mask_SORT_6 [L108] SORT_6 state_66 = __VERIFIER_nondet_uint() & mask_SORT_6; [L109] EXPR __VERIFIER_nondet_ulong() & mask_SORT_14 [L109] SORT_14 state_78 = __VERIFIER_nondet_ulong() & mask_SORT_14; [L110] EXPR __VERIFIER_nondet_ulong() & mask_SORT_14 [L110] SORT_14 state_81 = __VERIFIER_nondet_ulong() & mask_SORT_14; [L111] EXPR __VERIFIER_nondet_uchar() & mask_SORT_1 [L111] SORT_1 state_84 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L112] EXPR __VERIFIER_nondet_uint() & mask_SORT_6 [L112] SORT_6 state_90 = __VERIFIER_nondet_uint() & mask_SORT_6; [L113] EXPR __VERIFIER_nondet_uint() & mask_SORT_6 [L113] SORT_6 state_96 = __VERIFIER_nondet_uint() & mask_SORT_6; [L114] EXPR __VERIFIER_nondet_uchar() & mask_SORT_10 [L114] SORT_10 state_108 = __VERIFIER_nondet_uchar() & mask_SORT_10; [L115] EXPR __VERIFIER_nondet_uchar() & mask_SORT_10 [L115] SORT_10 state_111 = __VERIFIER_nondet_uchar() & mask_SORT_10; [L116] EXPR __VERIFIER_nondet_uchar() & mask_SORT_1 [L116] SORT_1 state_145 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L117] EXPR __VERIFIER_nondet_uchar() & mask_SORT_1 [L117] SORT_1 state_148 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L118] EXPR __VERIFIER_nondet_uchar() & mask_SORT_10 [L118] SORT_10 state_153 = __VERIFIER_nondet_uchar() & mask_SORT_10; [L119] EXPR __VERIFIER_nondet_uchar() & mask_SORT_10 [L119] SORT_10 state_156 = __VERIFIER_nondet_uchar() & mask_SORT_10; [L120] EXPR __VERIFIER_nondet_uchar() & mask_SORT_1 [L120] SORT_1 state_171 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L121] EXPR __VERIFIER_nondet_uchar() & mask_SORT_1 [L121] SORT_1 state_174 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L122] EXPR __VERIFIER_nondet_ulong() & mask_SORT_14 [L122] SORT_14 state_213 = __VERIFIER_nondet_ulong() & mask_SORT_14; [L123] EXPR __VERIFIER_nondet_ulong() & mask_SORT_14 [L123] SORT_14 state_216 = __VERIFIER_nondet_ulong() & mask_SORT_14; [L124] EXPR __VERIFIER_nondet_uchar() & mask_SORT_1 [L124] SORT_1 state_219 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L125] EXPR __VERIFIER_nondet_uchar() & mask_SORT_10 [L125] SORT_10 state_222 = __VERIFIER_nondet_uchar() & mask_SORT_10; [L126] EXPR __VERIFIER_nondet_uchar() & mask_SORT_1 [L126] SORT_1 state_227 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L127] EXPR __VERIFIER_nondet_uint() & mask_SORT_6 [L127] SORT_6 state_234 = __VERIFIER_nondet_uint() & mask_SORT_6; [L128] EXPR __VERIFIER_nondet_uchar() & mask_SORT_1 [L128] SORT_1 state_237 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L129] EXPR __VERIFIER_nondet_uchar() & mask_SORT_10 [L129] SORT_10 state_242 = __VERIFIER_nondet_uchar() & mask_SORT_10; [L130] EXPR __VERIFIER_nondet_uint() & mask_SORT_6 [L130] SORT_6 state_263 = __VERIFIER_nondet_uint() & mask_SORT_6; [L131] EXPR __VERIFIER_nondet_uchar() & mask_SORT_10 [L131] SORT_10 state_274 = __VERIFIER_nondet_uchar() & mask_SORT_10; [L132] EXPR __VERIFIER_nondet_uchar() & mask_SORT_1 [L132] SORT_1 state_302 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L133] EXPR __VERIFIER_nondet_uchar() & mask_SORT_10 [L133] SORT_10 state_307 = __VERIFIER_nondet_uchar() & mask_SORT_10; [L134] EXPR __VERIFIER_nondet_uchar() & mask_SORT_1 [L134] SORT_1 state_323 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L136] SORT_1 init_58_arg_1 = var_56; [L137] state_57 = init_58_arg_1 [L138] SORT_6 init_62_arg_1 = var_60; [L139] state_61 = init_62_arg_1 [L140] SORT_1 init_64_arg_1 = var_56; [L141] state_63 = init_64_arg_1 [L142] SORT_6 init_67_arg_1 = var_60; [L143] state_66 = init_67_arg_1 [L144] SORT_14 init_79_arg_1 = var_77; [L145] state_78 = init_79_arg_1 [L146] SORT_14 init_82_arg_1 = var_77; [L147] state_81 = init_82_arg_1 [L148] SORT_1 init_85_arg_1 = var_56; [L149] state_84 = init_85_arg_1 [L150] SORT_6 init_91_arg_1 = var_60; [L151] state_90 = init_91_arg_1 [L152] SORT_6 init_97_arg_1 = var_60; [L153] state_96 = init_97_arg_1 [L154] SORT_10 init_109_arg_1 = var_107; [L155] state_108 = init_109_arg_1 [L156] SORT_10 init_112_arg_1 = var_107; [L157] state_111 = init_112_arg_1 [L158] SORT_1 init_146_arg_1 = var_56; [L159] state_145 = init_146_arg_1 [L160] SORT_1 init_149_arg_1 = var_56; [L161] state_148 = init_149_arg_1 [L162] SORT_10 init_154_arg_1 = var_107; [L163] state_153 = init_154_arg_1 [L164] SORT_10 init_157_arg_1 = var_107; [L165] state_156 = init_157_arg_1 [L166] SORT_1 init_172_arg_1 = var_56; [L167] state_171 = init_172_arg_1 [L168] SORT_1 init_175_arg_1 = var_56; [L169] state_174 = init_175_arg_1 [L170] SORT_14 init_214_arg_1 = var_77; [L171] state_213 = init_214_arg_1 [L172] SORT_14 init_217_arg_1 = var_77; [L173] state_216 = init_217_arg_1 [L174] SORT_1 init_220_arg_1 = var_56; [L175] state_219 = init_220_arg_1 [L176] SORT_10 init_223_arg_1 = var_107; [L177] state_222 = init_223_arg_1 [L178] SORT_1 init_228_arg_1 = var_56; [L179] state_227 = init_228_arg_1 [L180] SORT_6 init_235_arg_1 = var_60; [L181] state_234 = init_235_arg_1 [L182] SORT_1 init_238_arg_1 = var_56; [L183] state_237 = init_238_arg_1 [L184] SORT_10 init_243_arg_1 = var_107; [L185] state_242 = init_243_arg_1 [L186] SORT_6 init_264_arg_1 = var_60; [L187] state_263 = init_264_arg_1 [L188] SORT_10 init_275_arg_1 = var_107; [L189] state_274 = init_275_arg_1 [L190] SORT_1 init_303_arg_1 = var_56; [L191] state_302 = init_303_arg_1 [L192] SORT_10 init_308_arg_1 = var_107; [L193] state_307 = init_308_arg_1 [L194] SORT_1 init_324_arg_1 = var_56; [L195] state_323 = init_324_arg_1 VAL [init_109_arg_1=0, init_112_arg_1=0, init_146_arg_1=0, init_149_arg_1=0, init_154_arg_1=0, init_157_arg_1=0, init_172_arg_1=0, init_175_arg_1=0, init_214_arg_1=0, init_217_arg_1=0, init_220_arg_1=0, init_223_arg_1=0, init_228_arg_1=0, init_235_arg_1=0, init_238_arg_1=0, init_243_arg_1=0, init_264_arg_1=0, init_275_arg_1=0, init_303_arg_1=0, init_308_arg_1=0, init_324_arg_1=0, init_58_arg_1=0, init_62_arg_1=0, init_64_arg_1=0, init_67_arg_1=0, init_79_arg_1=0, init_82_arg_1=0, init_85_arg_1=0, init_91_arg_1=0, init_97_arg_1=0, mask_SORT_10=15, mask_SORT_121=3, mask_SORT_14=18446744073709551615, mask_SORT_1=1, mask_SORT_6=4294967295, msb_SORT_10=8, msb_SORT_121=2, msb_SORT_14=9223372036854775808, msb_SORT_1=1, msb_SORT_6=2147483648, state_108=0, state_111=0, state_145=0, state_148=0, state_153=0, state_156=0, state_171=0, state_174=0, state_213=0, state_216=0, state_219=0, state_222=0, state_227=0, state_234=0, state_237=0, state_242=0, state_263=0, state_274=0, state_302=0, state_307=0, state_323=0, state_57=0, state_61=0, state_63=0, state_66=0, state_78=0, state_81=0, state_84=0, state_90=0, state_96=0, var_107=0, var_116=2, var_119=4, var_126=1, var_133=1, var_136=3, var_139=2, var_56=0, var_60=0, var_73=1, var_77=0] [L198] input_2 = __VERIFIER_nondet_uchar() [L199] EXPR input_2 & mask_SORT_1 [L199] input_2 = input_2 & mask_SORT_1 [L200] input_3 = __VERIFIER_nondet_uchar() [L201] input_4 = __VERIFIER_nondet_uchar() [L202] input_5 = __VERIFIER_nondet_uchar() [L203] input_7 = __VERIFIER_nondet_uint() [L204] input_8 = __VERIFIER_nondet_uint() [L205] input_9 = __VERIFIER_nondet_uchar() [L206] EXPR input_9 & mask_SORT_1 [L206] input_9 = input_9 & mask_SORT_1 [L207] input_11 = __VERIFIER_nondet_uchar() [L208] input_12 = __VERIFIER_nondet_uchar() [L209] input_13 = __VERIFIER_nondet_uchar() [L210] input_15 = __VERIFIER_nondet_ulong() [L211] input_16 = __VERIFIER_nondet_uchar() [L212] input_17 = __VERIFIER_nondet_uchar() [L213] input_18 = __VERIFIER_nondet_uint() [L214] input_19 = __VERIFIER_nondet_uchar() [L215] input_20 = __VERIFIER_nondet_uchar() [L216] input_21 = __VERIFIER_nondet_uchar() [L217] input_22 = __VERIFIER_nondet_uint() [L218] input_23 = __VERIFIER_nondet_uint() [L219] input_24 = __VERIFIER_nondet_uchar() [L220] input_25 = __VERIFIER_nondet_ulong() [L221] input_26 = __VERIFIER_nondet_uchar() [L222] input_27 = __VERIFIER_nondet_uchar() [L223] input_28 = __VERIFIER_nondet_uint() [L224] input_29 = __VERIFIER_nondet_uint() [L225] input_30 = __VERIFIER_nondet_uint() [L226] input_31 = __VERIFIER_nondet_uint() [L227] input_32 = __VERIFIER_nondet_uchar() [L228] input_33 = __VERIFIER_nondet_uchar() [L229] input_34 = __VERIFIER_nondet_uchar() [L230] input_35 = __VERIFIER_nondet_uchar() [L231] input_36 = __VERIFIER_nondet_uchar() [L232] input_37 = __VERIFIER_nondet_uchar() [L233] input_38 = __VERIFIER_nondet_uchar() [L234] input_39 = __VERIFIER_nondet_uchar() [L235] input_40 = __VERIFIER_nondet_uchar() [L236] input_41 = __VERIFIER_nondet_uchar() [L237] input_42 = __VERIFIER_nondet_uchar() [L238] input_43 = __VERIFIER_nondet_uchar() [L239] input_44 = __VERIFIER_nondet_uchar() [L240] input_45 = __VERIFIER_nondet_uchar() [L241] input_46 = __VERIFIER_nondet_ulong() [L242] input_47 = __VERIFIER_nondet_ulong() [L243] input_48 = __VERIFIER_nondet_ulong() [L244] input_49 = __VERIFIER_nondet_ulong() [L245] input_50 = __VERIFIER_nondet_uint() [L246] input_51 = __VERIFIER_nondet_uint() [L247] input_52 = __VERIFIER_nondet_uchar() [L248] input_53 = __VERIFIER_nondet_uchar() [L249] input_54 = __VERIFIER_nondet_uchar() [L250] input_55 = __VERIFIER_nondet_uchar() [L253] SORT_1 var_59_arg_0 = state_57; [L254] SORT_1 var_59 = ~var_59_arg_0; [L255] SORT_1 var_65_arg_0 = state_63; [L256] SORT_6 var_65_arg_1 = state_61; [L257] SORT_6 var_65_arg_2 = input_18; [L258] SORT_6 var_65 = var_65_arg_0 ? var_65_arg_1 : var_65_arg_2; [L259] EXPR var_65 & mask_SORT_6 [L259] var_65 = var_65 & mask_SORT_6 [L260] SORT_1 var_68_arg_0 = state_63; [L261] SORT_6 var_68_arg_1 = state_66; [L262] SORT_6 var_68_arg_2 = input_18; [L263] SORT_6 var_68 = var_68_arg_0 ? var_68_arg_1 : var_68_arg_2; [L264] EXPR var_68 & mask_SORT_6 [L264] var_68 = var_68 & mask_SORT_6 [L265] SORT_6 var_69_arg_0 = var_65; [L266] SORT_6 var_69_arg_1 = var_68; [L267] SORT_1 var_69 = var_69_arg_0 == var_69_arg_1; [L268] SORT_1 var_70_arg_0 = var_59; [L269] SORT_1 var_70_arg_1 = var_69; [L270] EXPR var_70_arg_0 | var_70_arg_1 [L270] SORT_1 var_70 = var_70_arg_0 | var_70_arg_1; [L271] SORT_1 var_74_arg_0 = var_70; [L272] SORT_1 var_74 = ~var_74_arg_0; [L273] SORT_1 var_75_arg_0 = var_73; [L274] SORT_1 var_75_arg_1 = var_74; [L275] EXPR var_75_arg_0 & var_75_arg_1 [L275] SORT_1 var_75 = var_75_arg_0 & var_75_arg_1; [L276] EXPR var_75 & mask_SORT_1 [L276] var_75 = var_75 & mask_SORT_1 [L277] SORT_1 bad_76_arg_0 = var_75; [L278] CALL __VERIFIER_assert(!(bad_76_arg_0)) [L21] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L21] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 7 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.2s, 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, 0.6s 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 [2023-11-12 00:53:43,646 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fc19f79-e1c4-49d6-b28f-347df7fb7d1d/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fc19f79-e1c4-49d6-b28f-347df7fb7d1d/bin/utaipan-verify-NcY6lQBIFX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fc19f79-e1c4-49d6-b28f-347df7fb7d1d/bin/utaipan-verify-NcY6lQBIFX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fc19f79-e1c4-49d6-b28f-347df7fb7d1d/bin/utaipan-verify-NcY6lQBIFX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fc19f79-e1c4-49d6-b28f-347df7fb7d1d/bin/utaipan-verify-NcY6lQBIFX/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fc19f79-e1c4-49d6-b28f-347df7fb7d1d/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fc19f79-e1c4-49d6-b28f-347df7fb7d1d/bin/utaipan-verify-NcY6lQBIFX --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 e845250638bf2269b9610642a85a2d027126b83f570f70da1feb220fdec8c1ec --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 00:53:46,326 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 00:53:46,428 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fc19f79-e1c4-49d6-b28f-347df7fb7d1d/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2023-11-12 00:53:46,438 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 00:53:46,439 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 00:53:46,486 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 00:53:46,487 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 00:53:46,488 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 00:53:46,489 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 00:53:46,493 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 00:53:46,494 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-12 00:53:46,494 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-12 00:53:46,495 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-12 00:53:46,496 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-12 00:53:46,497 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-12 00:53:46,497 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-12 00:53:46,498 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 00:53:46,499 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 00:53:46,499 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 00:53:46,500 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 00:53:46,500 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 00:53:46,501 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 00:53:46,501 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-12 00:53:46,502 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-12 00:53:46,502 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-12 00:53:46,502 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 00:53:46,503 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 00:53:46,503 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 00:53:46,504 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-12 00:53:46,504 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 00:53:46,505 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:53:46,506 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 00:53:46,506 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 00:53:46,506 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 00:53:46,506 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-11-12 00:53:46,507 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-12 00:53:46,507 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 00:53:46,507 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-12 00:53:46,507 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 00:53:46,508 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_9fc19f79-e1c4-49d6-b28f-347df7fb7d1d/bin/utaipan-verify-NcY6lQBIFX/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fc19f79-e1c4-49d6-b28f-347df7fb7d1d/bin/utaipan-verify-NcY6lQBIFX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e845250638bf2269b9610642a85a2d027126b83f570f70da1feb220fdec8c1ec [2023-11-12 00:53:46,865 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 00:53:46,902 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 00:53:46,905 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 00:53:46,906 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 00:53:46,907 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 00:53:46,909 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fc19f79-e1c4-49d6-b28f-347df7fb7d1d/bin/utaipan-verify-NcY6lQBIFX/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal2.c [2023-11-12 00:53:50,060 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 00:53:50,474 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 00:53:50,474 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fc19f79-e1c4-49d6-b28f-347df7fb7d1d/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal2.c [2023-11-12 00:53:50,501 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fc19f79-e1c4-49d6-b28f-347df7fb7d1d/bin/utaipan-verify-NcY6lQBIFX/data/6ef474cde/42132dac6ace487bb4e8ddea57d6c396/FLAGd090f3652 [2023-11-12 00:53:50,521 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fc19f79-e1c4-49d6-b28f-347df7fb7d1d/bin/utaipan-verify-NcY6lQBIFX/data/6ef474cde/42132dac6ace487bb4e8ddea57d6c396 [2023-11-12 00:53:50,527 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 00:53:50,530 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 00:53:50,537 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 00:53:50,537 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 00:53:50,542 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 00:53:50,543 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:53:50" (1/1) ... [2023-11-12 00:53:50,544 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a88bfdd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:53:50, skipping insertion in model container [2023-11-12 00:53:50,544 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:53:50" (1/1) ... [2023-11-12 00:53:50,614 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 00:53:50,843 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_9fc19f79-e1c4-49d6-b28f-347df7fb7d1d/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal2.c[1244,1257] [2023-11-12 00:53:51,186 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:53:51,204 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 00:53:51,221 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_9fc19f79-e1c4-49d6-b28f-347df7fb7d1d/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal2.c[1244,1257] [2023-11-12 00:53:51,379 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:53:51,404 INFO L206 MainTranslator]: Completed translation [2023-11-12 00:53:51,405 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:53:51 WrapperNode [2023-11-12 00:53:51,405 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 00:53:51,406 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 00:53:51,406 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 00:53:51,407 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 00:53:51,414 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:53:51" (1/1) ... [2023-11-12 00:53:51,451 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:53:51" (1/1) ... [2023-11-12 00:53:51,567 INFO L138 Inliner]: procedures = 17, calls = 15, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1330 [2023-11-12 00:53:51,568 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 00:53:51,569 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 00:53:51,569 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 00:53:51,569 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 00:53:51,578 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:53:51" (1/1) ... [2023-11-12 00:53:51,579 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:53:51" (1/1) ... [2023-11-12 00:53:51,598 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:53:51" (1/1) ... [2023-11-12 00:53:51,598 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:53:51" (1/1) ... [2023-11-12 00:53:51,641 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:53:51" (1/1) ... [2023-11-12 00:53:51,647 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:53:51" (1/1) ... [2023-11-12 00:53:51,655 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:53:51" (1/1) ... [2023-11-12 00:53:51,663 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:53:51" (1/1) ... [2023-11-12 00:53:51,678 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 00:53:51,679 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 00:53:51,680 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 00:53:51,680 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 00:53:51,681 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:53:51" (1/1) ... [2023-11-12 00:53:51,691 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:53:51,720 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fc19f79-e1c4-49d6-b28f-347df7fb7d1d/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:53:51,749 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fc19f79-e1c4-49d6-b28f-347df7fb7d1d/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 00:53:51,794 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fc19f79-e1c4-49d6-b28f-347df7fb7d1d/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 00:53:51,812 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 00:53:51,812 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-12 00:53:51,813 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 00:53:51,813 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 00:53:52,162 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 00:53:52,164 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 00:53:54,285 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 00:53:54,291 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 00:53:54,291 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-12 00:53:54,294 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:53:54 BoogieIcfgContainer [2023-11-12 00:53:54,294 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 00:53:54,296 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 00:53:54,297 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 00:53:54,300 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 00:53:54,301 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 12:53:50" (1/3) ... [2023-11-12 00:53:54,301 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ab52692 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:53:54, skipping insertion in model container [2023-11-12 00:53:54,302 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:53:51" (2/3) ... [2023-11-12 00:53:54,302 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ab52692 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:53:54, skipping insertion in model container [2023-11-12 00:53:54,303 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:53:54" (3/3) ... [2023-11-12 00:53:54,304 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.cal2.c [2023-11-12 00:53:54,325 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 00:53:54,325 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-12 00:53:54,376 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 00:53:54,385 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;@732854b9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-12 00:53:54,386 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-12 00:53:54,391 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) [2023-11-12 00:53:54,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-12 00:53:54,401 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:53:54,401 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-12 00:53:54,402 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:53:54,409 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:53:54,409 INFO L85 PathProgramCache]: Analyzing trace with hash 28698761, now seen corresponding path program 1 times [2023-11-12 00:53:54,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-12 00:53:54,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1795544171] [2023-11-12 00:53:54,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:53:54,427 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 [2023-11-12 00:53:54,427 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fc19f79-e1c4-49d6-b28f-347df7fb7d1d/bin/utaipan-verify-NcY6lQBIFX/mathsat [2023-11-12 00:53:54,436 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fc19f79-e1c4-49d6-b28f-347df7fb7d1d/bin/utaipan-verify-NcY6lQBIFX/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) [2023-11-12 00:53:54,441 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fc19f79-e1c4-49d6-b28f-347df7fb7d1d/bin/utaipan-verify-NcY6lQBIFX/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 [2023-11-12 00:53:54,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:53:54,822 INFO L262 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-12 00:53:54,834 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:53:55,036 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:53:55,036 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 00:53:55,037 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-12 00:53:55,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1795544171] [2023-11-12 00:53:55,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1795544171] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:53:55,038 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:53:55,039 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 00:53:55,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701921663] [2023-11-12 00:53:55,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:53:55,048 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 00:53:55,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-12 00:53:55,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 00:53:55,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 00:53:55,082 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) [2023-11-12 00:53:55,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:53:55,452 INFO L93 Difference]: Finished difference Result 19 states and 27 transitions. [2023-11-12 00:53:55,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 00:53:55,455 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 [2023-11-12 00:53:55,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:53:55,462 INFO L225 Difference]: With dead ends: 19 [2023-11-12 00:53:55,462 INFO L226 Difference]: Without dead ends: 10 [2023-11-12 00:53:55,465 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 [2023-11-12 00:53:55,469 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 3 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-12 00:53:55,470 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 11 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-12 00:53:55,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2023-11-12 00:53:55,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 9. [2023-11-12 00:53:55,499 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) [2023-11-12 00:53:55,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2023-11-12 00:53:55,501 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 5 [2023-11-12 00:53:55,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:53:55,502 INFO L495 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2023-11-12 00:53:55,502 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) [2023-11-12 00:53:55,503 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2023-11-12 00:53:55,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-12 00:53:55,503 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:53:55,503 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2023-11-12 00:53:55,516 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fc19f79-e1c4-49d6-b28f-347df7fb7d1d/bin/utaipan-verify-NcY6lQBIFX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-11-12 00:53:55,716 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fc19f79-e1c4-49d6-b28f-347df7fb7d1d/bin/utaipan-verify-NcY6lQBIFX/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 [2023-11-12 00:53:55,717 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:53:55,717 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:53:55,717 INFO L85 PathProgramCache]: Analyzing trace with hash 271073635, now seen corresponding path program 1 times [2023-11-12 00:53:55,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-12 00:53:55,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [744384948] [2023-11-12 00:53:55,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:53:55,721 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 [2023-11-12 00:53:55,721 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fc19f79-e1c4-49d6-b28f-347df7fb7d1d/bin/utaipan-verify-NcY6lQBIFX/mathsat [2023-11-12 00:53:55,722 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fc19f79-e1c4-49d6-b28f-347df7fb7d1d/bin/utaipan-verify-NcY6lQBIFX/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) [2023-11-12 00:53:55,735 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fc19f79-e1c4-49d6-b28f-347df7fb7d1d/bin/utaipan-verify-NcY6lQBIFX/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 [2023-11-12 00:53:56,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:53:56,803 INFO L262 TraceCheckSpWp]: Trace formula consists of 1007 conjuncts, 30 conjunts are in the unsatisfiable core [2023-11-12 00:53:56,815 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:53:57,079 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:53:57,079 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 00:53:57,996 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:53:57,997 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-12 00:53:57,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [744384948] [2023-11-12 00:53:57,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [744384948] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 00:53:57,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1654704432] [2023-11-12 00:53:57,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:53:57,998 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-12 00:53:57,999 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fc19f79-e1c4-49d6-b28f-347df7fb7d1d/bin/utaipan-verify-NcY6lQBIFX/cvc4 [2023-11-12 00:53:58,041 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fc19f79-e1c4-49d6-b28f-347df7fb7d1d/bin/utaipan-verify-NcY6lQBIFX/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-12 00:53:58,054 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fc19f79-e1c4-49d6-b28f-347df7fb7d1d/bin/utaipan-verify-NcY6lQBIFX/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2023-11-12 00:53:59,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:53:59,649 INFO L262 TraceCheckSpWp]: Trace formula consists of 1007 conjuncts, 32 conjunts are in the unsatisfiable core [2023-11-12 00:53:59,665 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:53:59,996 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:53:59,997 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 00:54:01,077 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:54:01,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1654704432] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 00:54:01,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1023678436] [2023-11-12 00:54:01,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:54:01,079 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:54:01,079 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fc19f79-e1c4-49d6-b28f-347df7fb7d1d/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:54:01,083 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fc19f79-e1c4-49d6-b28f-347df7fb7d1d/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 00:54:01,111 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fc19f79-e1c4-49d6-b28f-347df7fb7d1d/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-12 00:54:01,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:54:01,758 INFO L262 TraceCheckSpWp]: Trace formula consists of 1007 conjuncts, 39 conjunts are in the unsatisfiable core [2023-11-12 00:54:01,771 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:54:02,226 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:54:02,226 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 00:54:03,438 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:54:03,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1023678436] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 00:54:03,440 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2023-11-12 00:54:03,440 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 6, 6] total 15 [2023-11-12 00:54:03,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110181379] [2023-11-12 00:54:03,441 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2023-11-12 00:54:03,443 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-12 00:54:03,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-12 00:54:03,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-12 00:54:03,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2023-11-12 00:54:03,447 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand has 15 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 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) [2023-11-12 00:54:04,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:54:04,417 INFO L93 Difference]: Finished difference Result 15 states and 15 transitions. [2023-11-12 00:54:04,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-12 00:54:04,418 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 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 [2023-11-12 00:54:04,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:54:04,418 INFO L225 Difference]: With dead ends: 15 [2023-11-12 00:54:04,419 INFO L226 Difference]: Without dead ends: 13 [2023-11-12 00:54:04,419 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 27 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=92, Invalid=214, Unknown=0, NotChecked=0, Total=306 [2023-11-12 00:54:04,421 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 14 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-12 00:54:04,421 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 26 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-12 00:54:04,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2023-11-12 00:54:04,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 12. [2023-11-12 00:54:04,425 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) [2023-11-12 00:54:04,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2023-11-12 00:54:04,426 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 8 [2023-11-12 00:54:04,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:54:04,426 INFO L495 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2023-11-12 00:54:04,427 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 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) [2023-11-12 00:54:04,427 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2023-11-12 00:54:04,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-12 00:54:04,427 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:54:04,428 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-11-12 00:54:04,451 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fc19f79-e1c4-49d6-b28f-347df7fb7d1d/bin/utaipan-verify-NcY6lQBIFX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2023-11-12 00:54:04,656 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fc19f79-e1c4-49d6-b28f-347df7fb7d1d/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-12 00:54:04,853 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fc19f79-e1c4-49d6-b28f-347df7fb7d1d/bin/utaipan-verify-NcY6lQBIFX/cvc4 --incremental --print-success --lang smt (4)] Ended with exit code 0 [2023-11-12 00:54:05,044 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fc19f79-e1c4-49d6-b28f-347df7fb7d1d/bin/utaipan-verify-NcY6lQBIFX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fc19f79-e1c4-49d6-b28f-347df7fb7d1d/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fc19f79-e1c4-49d6-b28f-347df7fb7d1d/bin/utaipan-verify-NcY6lQBIFX/cvc4 --incremental --print-success --lang smt [2023-11-12 00:54:05,044 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:54:05,045 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:54:05,045 INFO L85 PathProgramCache]: Analyzing trace with hash 1020920393, now seen corresponding path program 2 times [2023-11-12 00:54:05,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-12 00:54:05,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [336435806] [2023-11-12 00:54:05,049 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-12 00:54:05,049 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 [2023-11-12 00:54:05,049 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fc19f79-e1c4-49d6-b28f-347df7fb7d1d/bin/utaipan-verify-NcY6lQBIFX/mathsat [2023-11-12 00:54:05,050 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fc19f79-e1c4-49d6-b28f-347df7fb7d1d/bin/utaipan-verify-NcY6lQBIFX/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) [2023-11-12 00:54:05,059 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fc19f79-e1c4-49d6-b28f-347df7fb7d1d/bin/utaipan-verify-NcY6lQBIFX/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 [2023-11-12 00:54:08,341 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-12 00:54:08,341 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-12 00:54:08,436 INFO L262 TraceCheckSpWp]: Trace formula consists of 1886 conjuncts, 481 conjunts are in the unsatisfiable core [2023-11-12 00:54:08,473 INFO L285 TraceCheckSpWp]: Computing forward predicates...