./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_CRC.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 30e01a73 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aedfd6c3-85d3-407e-a859-e3bd232bdb5b/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aedfd6c3-85d3-407e-a859-e3bd232bdb5b/bin/utaipan-verify-mE87zJ7Ire/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aedfd6c3-85d3-407e-a859-e3bd232bdb5b/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aedfd6c3-85d3-407e-a859-e3bd232bdb5b/bin/utaipan-verify-mE87zJ7Ire/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_CRC.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aedfd6c3-85d3-407e-a859-e3bd232bdb5b/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aedfd6c3-85d3-407e-a859-e3bd232bdb5b/bin/utaipan-verify-mE87zJ7Ire --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 217c4f5eefa3b0856788b7ca9679c9bd3ae2e76dd46c0382e56b3111181a98a9 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 20:32:42,483 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 20:32:42,595 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aedfd6c3-85d3-407e-a859-e3bd232bdb5b/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-11-23 20:32:42,601 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 20:32:42,602 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 20:32:42,626 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 20:32:42,626 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 20:32:42,627 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 20:32:42,628 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 20:32:42,633 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 20:32:42,634 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-23 20:32:42,635 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-23 20:32:42,635 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-23 20:32:42,637 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-23 20:32:42,637 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-23 20:32:42,638 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-23 20:32:42,638 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-23 20:32:42,638 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-23 20:32:42,639 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-23 20:32:42,639 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-23 20:32:42,640 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-23 20:32:42,640 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-23 20:32:42,642 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 20:32:42,642 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 20:32:42,642 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 20:32:42,643 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 20:32:42,643 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 20:32:42,644 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 20:32:42,644 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 20:32:42,644 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 20:32:42,646 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 20:32:42,646 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 20:32:42,646 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 20:32:42,646 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 20:32:42,647 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 20:32:42,647 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 20:32:42,647 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 20:32:42,648 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 20:32:42,648 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-23 20:32:42,648 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 20:32:42,648 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 20:32:42,649 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 20:32:42,649 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-23 20:32:42,649 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 20:32:42,650 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_aedfd6c3-85d3-407e-a859-e3bd232bdb5b/bin/utaipan-verify-mE87zJ7Ire/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aedfd6c3-85d3-407e-a859-e3bd232bdb5b/bin/utaipan-verify-mE87zJ7Ire Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 217c4f5eefa3b0856788b7ca9679c9bd3ae2e76dd46c0382e56b3111181a98a9 [2023-11-23 20:32:42,951 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 20:32:42,984 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 20:32:42,987 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 20:32:42,988 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 20:32:42,989 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 20:32:42,991 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aedfd6c3-85d3-407e-a859-e3bd232bdb5b/bin/utaipan-verify-mE87zJ7Ire/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_CRC.c [2023-11-23 20:32:46,076 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 20:32:46,357 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 20:32:46,358 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aedfd6c3-85d3-407e-a859-e3bd232bdb5b/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_CRC.c [2023-11-23 20:32:46,375 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aedfd6c3-85d3-407e-a859-e3bd232bdb5b/bin/utaipan-verify-mE87zJ7Ire/data/8bdead2a9/c0286d2db8a141a6ad6f9f91b229ab8e/FLAG7c68efebb [2023-11-23 20:32:46,389 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aedfd6c3-85d3-407e-a859-e3bd232bdb5b/bin/utaipan-verify-mE87zJ7Ire/data/8bdead2a9/c0286d2db8a141a6ad6f9f91b229ab8e [2023-11-23 20:32:46,392 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 20:32:46,394 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 20:32:46,396 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 20:32:46,396 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 20:32:46,402 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 20:32:46,403 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:32:46" (1/1) ... [2023-11-23 20:32:46,404 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@16c8cb9d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:32:46, skipping insertion in model container [2023-11-23 20:32:46,404 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:32:46" (1/1) ... [2023-11-23 20:32:46,459 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 20:32:46,689 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_aedfd6c3-85d3-407e-a859-e3bd232bdb5b/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_CRC.c[1245,1258] [2023-11-23 20:32:46,995 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 20:32:47,006 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 20:32:47,020 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_aedfd6c3-85d3-407e-a859-e3bd232bdb5b/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_CRC.c[1245,1258] [2023-11-23 20:32:47,302 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 20:32:47,318 INFO L206 MainTranslator]: Completed translation [2023-11-23 20:32:47,319 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:32:47 WrapperNode [2023-11-23 20:32:47,319 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 20:32:47,320 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 20:32:47,321 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 20:32:47,321 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 20:32:47,329 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:32:47" (1/1) ... [2023-11-23 20:32:47,369 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:32:47" (1/1) ... [2023-11-23 20:32:47,740 INFO L138 Inliner]: procedures = 17, calls = 16, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 2809 [2023-11-23 20:32:47,741 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 20:32:47,741 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 20:32:47,742 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 20:32:47,742 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 20:32:47,753 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:32:47" (1/1) ... [2023-11-23 20:32:47,753 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:32:47" (1/1) ... [2023-11-23 20:32:47,811 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:32:47" (1/1) ... [2023-11-23 20:32:47,811 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:32:47" (1/1) ... [2023-11-23 20:32:47,969 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:32:47" (1/1) ... [2023-11-23 20:32:48,003 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:32:47" (1/1) ... [2023-11-23 20:32:48,052 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:32:47" (1/1) ... [2023-11-23 20:32:48,070 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:32:47" (1/1) ... [2023-11-23 20:32:48,132 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 20:32:48,134 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 20:32:48,135 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 20:32:48,135 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 20:32:48,136 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:32:47" (1/1) ... [2023-11-23 20:32:48,142 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 20:32:48,155 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aedfd6c3-85d3-407e-a859-e3bd232bdb5b/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 20:32:48,172 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aedfd6c3-85d3-407e-a859-e3bd232bdb5b/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 20:32:48,207 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aedfd6c3-85d3-407e-a859-e3bd232bdb5b/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 20:32:48,220 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 20:32:48,220 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 20:32:48,220 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 20:32:48,220 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 20:32:48,534 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 20:32:48,536 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 20:32:51,025 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 20:32:56,216 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 20:32:56,216 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-23 20:32:56,218 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:32:56 BoogieIcfgContainer [2023-11-23 20:32:56,218 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 20:32:56,221 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 20:32:56,221 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 20:32:56,225 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 20:32:56,225 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 08:32:46" (1/3) ... [2023-11-23 20:32:56,226 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1874aa7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 08:32:56, skipping insertion in model container [2023-11-23 20:32:56,226 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:32:47" (2/3) ... [2023-11-23 20:32:56,227 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1874aa7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 08:32:56, skipping insertion in model container [2023-11-23 20:32:56,227 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:32:56" (3/3) ... [2023-11-23 20:32:56,228 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.h_CRC.c [2023-11-23 20:32:56,249 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 20:32:56,250 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 20:32:56,304 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 20:32:56,311 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;@43aeb768, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 20:32:56,311 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 20:32:56,315 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) [2023-11-23 20:32:56,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-11-23 20:32:56,321 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:32:56,321 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-11-23 20:32:56,322 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 20:32:56,326 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:32:56,327 INFO L85 PathProgramCache]: Analyzing trace with hash 109436404, now seen corresponding path program 1 times [2023-11-23 20:32:56,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:32:56,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424799710] [2023-11-23 20:32:56,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:32:56,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:32:56,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 20:32:56,695 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-23 20:32:56,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 20:32:56,901 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-11-23 20:32:56,903 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-23 20:32:56,904 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-23 20:32:56,906 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 20:32:56,911 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-11-23 20:32:56,915 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-23 20:32:56,961 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2023-11-23 20:32:56,971 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 08:32:56 BoogieIcfgContainer [2023-11-23 20:32:56,971 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-23 20:32:56,972 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-23 20:32:56,972 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-23 20:32:56,972 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-23 20:32:56,973 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:32:56" (3/4) ... [2023-11-23 20:32:56,975 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-23 20:32:56,976 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-23 20:32:56,978 INFO L158 Benchmark]: Toolchain (without parser) took 10583.51ms. Allocated memory was 130.0MB in the beginning and 459.3MB in the end (delta: 329.3MB). Free memory was 83.7MB in the beginning and 180.9MB in the end (delta: -97.2MB). Peak memory consumption was 235.4MB. Max. memory is 16.1GB. [2023-11-23 20:32:56,978 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 130.0MB. Free memory is still 102.5MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 20:32:56,979 INFO L158 Benchmark]: CACSL2BoogieTranslator took 923.90ms. Allocated memory was 130.0MB in the beginning and 161.5MB in the end (delta: 31.5MB). Free memory was 83.7MB in the beginning and 118.3MB in the end (delta: -34.6MB). Peak memory consumption was 37.1MB. Max. memory is 16.1GB. [2023-11-23 20:32:56,980 INFO L158 Benchmark]: Boogie Procedure Inliner took 420.52ms. Allocated memory is still 161.5MB. Free memory was 118.3MB in the beginning and 99.3MB in the end (delta: 19.0MB). Peak memory consumption was 80.7MB. Max. memory is 16.1GB. [2023-11-23 20:32:56,980 INFO L158 Benchmark]: Boogie Preprocessor took 391.43ms. Allocated memory is still 161.5MB. Free memory was 99.3MB in the beginning and 80.4MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-11-23 20:32:56,981 INFO L158 Benchmark]: RCFGBuilder took 8084.19ms. Allocated memory was 161.5MB in the beginning and 459.3MB in the end (delta: 297.8MB). Free memory was 80.4MB in the beginning and 218.6MB in the end (delta: -138.2MB). Peak memory consumption was 291.6MB. Max. memory is 16.1GB. [2023-11-23 20:32:56,982 INFO L158 Benchmark]: TraceAbstraction took 749.83ms. Allocated memory is still 459.3MB. Free memory was 217.6MB in the beginning and 180.9MB in the end (delta: 36.7MB). Peak memory consumption was 35.7MB. Max. memory is 16.1GB. [2023-11-23 20:32:56,982 INFO L158 Benchmark]: Witness Printer took 4.71ms. Allocated memory is still 459.3MB. Free memory was 180.9MB in the beginning and 180.9MB in the end (delta: 2.0kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-23 20:32:56,986 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32ms. Allocated memory is still 130.0MB. Free memory is still 102.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 923.90ms. Allocated memory was 130.0MB in the beginning and 161.5MB in the end (delta: 31.5MB). Free memory was 83.7MB in the beginning and 118.3MB in the end (delta: -34.6MB). Peak memory consumption was 37.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 420.52ms. Allocated memory is still 161.5MB. Free memory was 118.3MB in the beginning and 99.3MB in the end (delta: 19.0MB). Peak memory consumption was 80.7MB. Max. memory is 16.1GB. * Boogie Preprocessor took 391.43ms. Allocated memory is still 161.5MB. Free memory was 99.3MB in the beginning and 80.4MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * RCFGBuilder took 8084.19ms. Allocated memory was 161.5MB in the beginning and 459.3MB in the end (delta: 297.8MB). Free memory was 80.4MB in the beginning and 218.6MB in the end (delta: -138.2MB). Peak memory consumption was 291.6MB. Max. memory is 16.1GB. * TraceAbstraction took 749.83ms. Allocated memory is still 459.3MB. Free memory was 217.6MB in the beginning and 180.9MB in the end (delta: 36.7MB). Peak memory consumption was 35.7MB. Max. memory is 16.1GB. * Witness Printer took 4.71ms. Allocated memory is still 459.3MB. Free memory was 180.9MB in the beginning and 180.9MB in the end (delta: 2.0kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 21]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: overapproximation of bitwiseAnd at line 141. Possible FailurePath: [L26] const SORT_1 mask_SORT_1 = (SORT_1)-1 >> (sizeof(SORT_1) * 8 - 1); [L27] const SORT_1 msb_SORT_1 = (SORT_1)1 << (1 - 1); [L29] const SORT_5 mask_SORT_5 = (SORT_5)-1 >> (sizeof(SORT_5) * 8 - 8); [L30] const SORT_5 msb_SORT_5 = (SORT_5)1 << (8 - 1); [L32] const SORT_9 mask_SORT_9 = (SORT_9)-1 >> (sizeof(SORT_9) * 8 - 32); [L33] const SORT_9 msb_SORT_9 = (SORT_9)1 << (32 - 1); [L35] const SORT_161 mask_SORT_161 = (SORT_161)-1 >> (sizeof(SORT_161) * 8 - 2); [L36] const SORT_161 msb_SORT_161 = (SORT_161)1 << (2 - 1); [L38] const SORT_163 mask_SORT_163 = (SORT_163)-1 >> (sizeof(SORT_163) * 8 - 3); [L39] const SORT_163 msb_SORT_163 = (SORT_163)1 << (3 - 1); [L41] const SORT_165 mask_SORT_165 = (SORT_165)-1 >> (sizeof(SORT_165) * 8 - 4); [L42] const SORT_165 msb_SORT_165 = (SORT_165)1 << (4 - 1); [L44] const SORT_167 mask_SORT_167 = (SORT_167)-1 >> (sizeof(SORT_167) * 8 - 5); [L45] const SORT_167 msb_SORT_167 = (SORT_167)1 << (5 - 1); [L47] const SORT_169 mask_SORT_169 = (SORT_169)-1 >> (sizeof(SORT_169) * 8 - 6); [L48] const SORT_169 msb_SORT_169 = (SORT_169)1 << (6 - 1); [L50] const SORT_171 mask_SORT_171 = (SORT_171)-1 >> (sizeof(SORT_171) * 8 - 7); [L51] const SORT_171 msb_SORT_171 = (SORT_171)1 << (7 - 1); [L53] const SORT_174 mask_SORT_174 = (SORT_174)-1 >> (sizeof(SORT_174) * 8 - 9); [L54] const SORT_174 msb_SORT_174 = (SORT_174)1 << (9 - 1); [L56] const SORT_176 mask_SORT_176 = (SORT_176)-1 >> (sizeof(SORT_176) * 8 - 10); [L57] const SORT_176 msb_SORT_176 = (SORT_176)1 << (10 - 1); [L59] const SORT_178 mask_SORT_178 = (SORT_178)-1 >> (sizeof(SORT_178) * 8 - 11); [L60] const SORT_178 msb_SORT_178 = (SORT_178)1 << (11 - 1); [L62] const SORT_180 mask_SORT_180 = (SORT_180)-1 >> (sizeof(SORT_180) * 8 - 12); [L63] const SORT_180 msb_SORT_180 = (SORT_180)1 << (12 - 1); [L65] const SORT_182 mask_SORT_182 = (SORT_182)-1 >> (sizeof(SORT_182) * 8 - 13); [L66] const SORT_182 msb_SORT_182 = (SORT_182)1 << (13 - 1); [L68] const SORT_184 mask_SORT_184 = (SORT_184)-1 >> (sizeof(SORT_184) * 8 - 14); [L69] const SORT_184 msb_SORT_184 = (SORT_184)1 << (14 - 1); [L71] const SORT_186 mask_SORT_186 = (SORT_186)-1 >> (sizeof(SORT_186) * 8 - 15); [L72] const SORT_186 msb_SORT_186 = (SORT_186)1 << (15 - 1); [L74] const SORT_188 mask_SORT_188 = (SORT_188)-1 >> (sizeof(SORT_188) * 8 - 16); [L75] const SORT_188 msb_SORT_188 = (SORT_188)1 << (16 - 1); [L77] const SORT_190 mask_SORT_190 = (SORT_190)-1 >> (sizeof(SORT_190) * 8 - 17); [L78] const SORT_190 msb_SORT_190 = (SORT_190)1 << (17 - 1); [L80] const SORT_192 mask_SORT_192 = (SORT_192)-1 >> (sizeof(SORT_192) * 8 - 18); [L81] const SORT_192 msb_SORT_192 = (SORT_192)1 << (18 - 1); [L83] const SORT_194 mask_SORT_194 = (SORT_194)-1 >> (sizeof(SORT_194) * 8 - 19); [L84] const SORT_194 msb_SORT_194 = (SORT_194)1 << (19 - 1); [L86] const SORT_196 mask_SORT_196 = (SORT_196)-1 >> (sizeof(SORT_196) * 8 - 20); [L87] const SORT_196 msb_SORT_196 = (SORT_196)1 << (20 - 1); [L89] const SORT_198 mask_SORT_198 = (SORT_198)-1 >> (sizeof(SORT_198) * 8 - 21); [L90] const SORT_198 msb_SORT_198 = (SORT_198)1 << (21 - 1); [L92] const SORT_200 mask_SORT_200 = (SORT_200)-1 >> (sizeof(SORT_200) * 8 - 22); [L93] const SORT_200 msb_SORT_200 = (SORT_200)1 << (22 - 1); [L95] const SORT_202 mask_SORT_202 = (SORT_202)-1 >> (sizeof(SORT_202) * 8 - 23); [L96] const SORT_202 msb_SORT_202 = (SORT_202)1 << (23 - 1); [L98] const SORT_204 mask_SORT_204 = (SORT_204)-1 >> (sizeof(SORT_204) * 8 - 24); [L99] const SORT_204 msb_SORT_204 = (SORT_204)1 << (24 - 1); [L101] const SORT_206 mask_SORT_206 = (SORT_206)-1 >> (sizeof(SORT_206) * 8 - 25); [L102] const SORT_206 msb_SORT_206 = (SORT_206)1 << (25 - 1); [L104] const SORT_208 mask_SORT_208 = (SORT_208)-1 >> (sizeof(SORT_208) * 8 - 26); [L105] const SORT_208 msb_SORT_208 = (SORT_208)1 << (26 - 1); [L107] const SORT_210 mask_SORT_210 = (SORT_210)-1 >> (sizeof(SORT_210) * 8 - 27); [L108] const SORT_210 msb_SORT_210 = (SORT_210)1 << (27 - 1); [L110] const SORT_212 mask_SORT_212 = (SORT_212)-1 >> (sizeof(SORT_212) * 8 - 28); [L111] const SORT_212 msb_SORT_212 = (SORT_212)1 << (28 - 1); [L113] const SORT_214 mask_SORT_214 = (SORT_214)-1 >> (sizeof(SORT_214) * 8 - 29); [L114] const SORT_214 msb_SORT_214 = (SORT_214)1 << (29 - 1); [L116] const SORT_216 mask_SORT_216 = (SORT_216)-1 >> (sizeof(SORT_216) * 8 - 30); [L117] const SORT_216 msb_SORT_216 = (SORT_216)1 << (30 - 1); [L119] const SORT_218 mask_SORT_218 = (SORT_218)-1 >> (sizeof(SORT_218) * 8 - 31); [L120] const SORT_218 msb_SORT_218 = (SORT_218)1 << (31 - 1); [L122] const SORT_9 var_10 = 4294967295; [L123] const SORT_9 var_13 = 2863311530; [L124] const SORT_1 var_17 = 1; [L126] SORT_1 input_2; [L127] SORT_1 input_3; [L128] SORT_1 input_4; [L129] SORT_5 input_6; [L130] SORT_1 input_7; [L131] SORT_1 input_8; [L133] EXPR __VERIFIER_nondet_uint() & mask_SORT_9 [L133] SORT_9 state_11 = __VERIFIER_nondet_uint() & mask_SORT_9; [L135] SORT_9 init_12_arg_1 = var_10; [L136] state_11 = init_12_arg_1 VAL [init_12_arg_1=4294967295, mask_SORT_161=3, mask_SORT_163=7, mask_SORT_165=15, mask_SORT_167=31, mask_SORT_169=63, mask_SORT_171=127, mask_SORT_174=511, mask_SORT_176=1023, mask_SORT_178=2047, mask_SORT_180=4095, mask_SORT_182=8191, mask_SORT_184=16383, mask_SORT_186=32767, mask_SORT_188=65535, mask_SORT_190=131071, mask_SORT_192=262143, mask_SORT_194=524287, mask_SORT_196=1048575, mask_SORT_198=2097151, mask_SORT_1=1, mask_SORT_200=4194303, mask_SORT_202=8388607, mask_SORT_204=16777215, mask_SORT_206=33554431, mask_SORT_208=67108863, mask_SORT_210=134217727, mask_SORT_212=268435455, mask_SORT_214=536870911, mask_SORT_216=1073741823, mask_SORT_218=2147483647, mask_SORT_5=255, mask_SORT_9=4294967295, msb_SORT_161=2, msb_SORT_163=4, msb_SORT_165=8, msb_SORT_167=16, msb_SORT_169=32, msb_SORT_171=64, msb_SORT_174=256, msb_SORT_176=512, msb_SORT_178=1024, msb_SORT_180=2048, msb_SORT_182=4096, msb_SORT_184=8192, msb_SORT_186=16384, msb_SORT_188=32768, msb_SORT_190=65536, msb_SORT_192=131072, msb_SORT_194=262144, msb_SORT_196=524288, msb_SORT_198=1048576, msb_SORT_1=1, msb_SORT_200=2097152, msb_SORT_202=4194304, msb_SORT_204=8388608, msb_SORT_206=16777216, msb_SORT_208=33554432, msb_SORT_210=67108864, msb_SORT_212=134217728, msb_SORT_214=268435456, msb_SORT_216=536870912, msb_SORT_218=1073741824, msb_SORT_5=128, msb_SORT_9=2147483648, state_11=4294967295, var_10=4294967295, var_13=2863311530, var_17=1] [L139] input_2 = __VERIFIER_nondet_uchar() [L140] input_3 = __VERIFIER_nondet_uchar() [L141] EXPR input_3 & mask_SORT_1 [L141] input_3 = input_3 & mask_SORT_1 [L142] input_4 = __VERIFIER_nondet_uchar() [L143] EXPR input_4 & mask_SORT_1 [L143] input_4 = input_4 & mask_SORT_1 [L144] input_6 = __VERIFIER_nondet_uchar() [L145] EXPR input_6 & mask_SORT_5 [L145] input_6 = input_6 & mask_SORT_5 [L146] input_7 = __VERIFIER_nondet_uchar() [L147] EXPR input_7 & mask_SORT_1 [L147] input_7 = input_7 & mask_SORT_1 [L148] input_8 = __VERIFIER_nondet_uchar() [L149] EXPR input_8 & mask_SORT_1 [L149] input_8 = input_8 & mask_SORT_1 [L152] SORT_9 var_14_arg_0 = state_11; [L153] SORT_9 var_14_arg_1 = var_13; [L154] SORT_1 var_14 = var_14_arg_0 != var_14_arg_1; [L155] SORT_1 var_18_arg_0 = var_14; [L156] SORT_1 var_18 = ~var_18_arg_0; [L157] SORT_1 var_19_arg_0 = var_17; [L158] SORT_1 var_19_arg_1 = var_18; [L159] EXPR var_19_arg_0 & var_19_arg_1 [L159] SORT_1 var_19 = var_19_arg_0 & var_19_arg_1; [L160] EXPR var_19 & mask_SORT_1 [L160] var_19 = var_19 & mask_SORT_1 [L161] SORT_1 bad_20_arg_0 = var_19; [L162] CALL __VERIFIER_assert(!(bad_20_arg_0)) [L21] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L21] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 7 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.6s, 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, 0.3s 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 [2023-11-23 20:32:57,023 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aedfd6c3-85d3-407e-a859-e3bd232bdb5b/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aedfd6c3-85d3-407e-a859-e3bd232bdb5b/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aedfd6c3-85d3-407e-a859-e3bd232bdb5b/bin/utaipan-verify-mE87zJ7Ire/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aedfd6c3-85d3-407e-a859-e3bd232bdb5b/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aedfd6c3-85d3-407e-a859-e3bd232bdb5b/bin/utaipan-verify-mE87zJ7Ire/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_CRC.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aedfd6c3-85d3-407e-a859-e3bd232bdb5b/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aedfd6c3-85d3-407e-a859-e3bd232bdb5b/bin/utaipan-verify-mE87zJ7Ire --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 217c4f5eefa3b0856788b7ca9679c9bd3ae2e76dd46c0382e56b3111181a98a9 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 20:32:59,698 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 20:32:59,819 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aedfd6c3-85d3-407e-a859-e3bd232bdb5b/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2023-11-23 20:32:59,828 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 20:32:59,829 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 20:32:59,891 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 20:32:59,892 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 20:32:59,893 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 20:32:59,894 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 20:32:59,900 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 20:32:59,900 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-23 20:32:59,901 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-23 20:32:59,901 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-23 20:32:59,903 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-23 20:32:59,903 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-23 20:32:59,904 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-23 20:32:59,905 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 20:32:59,906 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 20:32:59,906 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 20:32:59,907 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 20:32:59,908 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 20:32:59,909 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 20:32:59,909 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-23 20:32:59,910 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-23 20:32:59,910 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-23 20:32:59,911 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 20:32:59,911 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 20:32:59,912 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 20:32:59,912 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-23 20:32:59,913 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 20:32:59,914 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 20:32:59,914 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 20:32:59,915 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 20:32:59,915 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 20:32:59,916 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 20:32:59,916 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-11-23 20:32:59,916 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-23 20:32:59,917 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 20:32:59,917 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 20:32:59,918 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-23 20:32:59,918 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 20:32:59,919 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_aedfd6c3-85d3-407e-a859-e3bd232bdb5b/bin/utaipan-verify-mE87zJ7Ire/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aedfd6c3-85d3-407e-a859-e3bd232bdb5b/bin/utaipan-verify-mE87zJ7Ire Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 217c4f5eefa3b0856788b7ca9679c9bd3ae2e76dd46c0382e56b3111181a98a9 [2023-11-23 20:33:00,285 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 20:33:00,316 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 20:33:00,318 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 20:33:00,320 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 20:33:00,320 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 20:33:00,322 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aedfd6c3-85d3-407e-a859-e3bd232bdb5b/bin/utaipan-verify-mE87zJ7Ire/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_CRC.c [2023-11-23 20:33:03,650 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 20:33:04,032 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 20:33:04,033 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aedfd6c3-85d3-407e-a859-e3bd232bdb5b/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_CRC.c [2023-11-23 20:33:04,054 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aedfd6c3-85d3-407e-a859-e3bd232bdb5b/bin/utaipan-verify-mE87zJ7Ire/data/3a399cf26/460bbe865ac342b9b5ec3efc6ad1b0d5/FLAGbd773a3c7 [2023-11-23 20:33:04,070 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aedfd6c3-85d3-407e-a859-e3bd232bdb5b/bin/utaipan-verify-mE87zJ7Ire/data/3a399cf26/460bbe865ac342b9b5ec3efc6ad1b0d5 [2023-11-23 20:33:04,072 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 20:33:04,074 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 20:33:04,076 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 20:33:04,076 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 20:33:04,087 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 20:33:04,088 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:33:04" (1/1) ... [2023-11-23 20:33:04,090 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@10b5c482 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:33:04, skipping insertion in model container [2023-11-23 20:33:04,090 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:33:04" (1/1) ... [2023-11-23 20:33:04,166 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 20:33:04,402 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_aedfd6c3-85d3-407e-a859-e3bd232bdb5b/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_CRC.c[1245,1258] [2023-11-23 20:33:04,695 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 20:33:04,708 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 20:33:04,725 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_aedfd6c3-85d3-407e-a859-e3bd232bdb5b/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_CRC.c[1245,1258] [2023-11-23 20:33:04,921 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 20:33:04,958 INFO L206 MainTranslator]: Completed translation [2023-11-23 20:33:04,958 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:33:04 WrapperNode [2023-11-23 20:33:04,958 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 20:33:04,960 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 20:33:04,960 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 20:33:04,961 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 20:33:04,970 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:33:04" (1/1) ... [2023-11-23 20:33:05,020 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:33:04" (1/1) ... [2023-11-23 20:33:05,083 INFO L138 Inliner]: procedures = 17, calls = 16, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 676 [2023-11-23 20:33:05,083 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 20:33:05,084 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 20:33:05,084 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 20:33:05,084 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 20:33:05,094 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:33:04" (1/1) ... [2023-11-23 20:33:05,095 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:33:04" (1/1) ... [2023-11-23 20:33:05,101 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:33:04" (1/1) ... [2023-11-23 20:33:05,102 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:33:04" (1/1) ... [2023-11-23 20:33:05,150 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:33:04" (1/1) ... [2023-11-23 20:33:05,164 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:33:04" (1/1) ... [2023-11-23 20:33:05,169 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:33:04" (1/1) ... [2023-11-23 20:33:05,174 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:33:04" (1/1) ... [2023-11-23 20:33:05,184 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 20:33:05,188 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 20:33:05,189 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 20:33:05,189 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 20:33:05,190 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:33:04" (1/1) ... [2023-11-23 20:33:05,215 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 20:33:05,240 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aedfd6c3-85d3-407e-a859-e3bd232bdb5b/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 20:33:05,263 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aedfd6c3-85d3-407e-a859-e3bd232bdb5b/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 20:33:05,286 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aedfd6c3-85d3-407e-a859-e3bd232bdb5b/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 20:33:05,306 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 20:33:05,306 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-23 20:33:05,307 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 20:33:05,307 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 20:33:05,573 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 20:33:05,578 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 20:33:06,334 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 20:33:06,404 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 20:33:06,405 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-23 20:33:06,405 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:33:06 BoogieIcfgContainer [2023-11-23 20:33:06,406 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 20:33:06,409 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 20:33:06,409 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 20:33:06,413 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 20:33:06,413 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 08:33:04" (1/3) ... [2023-11-23 20:33:06,414 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a0c942e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 08:33:06, skipping insertion in model container [2023-11-23 20:33:06,414 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:33:04" (2/3) ... [2023-11-23 20:33:06,416 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a0c942e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 08:33:06, skipping insertion in model container [2023-11-23 20:33:06,416 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:33:06" (3/3) ... [2023-11-23 20:33:06,417 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.h_CRC.c [2023-11-23 20:33:06,441 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 20:33:06,441 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 20:33:06,502 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 20:33:06,510 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;@dfc9d3c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 20:33:06,510 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 20:33:06,514 INFO L276 IsEmpty]: Start isEmpty. Operand has 8 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 7 states have internal predecessors, (10), 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) [2023-11-23 20:33:06,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-11-23 20:33:06,520 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:33:06,521 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-11-23 20:33:06,521 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 20:33:06,526 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:33:06,526 INFO L85 PathProgramCache]: Analyzing trace with hash 1827279, now seen corresponding path program 1 times [2023-11-23 20:33:06,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 20:33:06,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1950807364] [2023-11-23 20:33:06,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:33:06,539 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 [2023-11-23 20:33:06,539 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aedfd6c3-85d3-407e-a859-e3bd232bdb5b/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 20:33:06,543 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aedfd6c3-85d3-407e-a859-e3bd232bdb5b/bin/utaipan-verify-mE87zJ7Ire/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) [2023-11-23 20:33:06,563 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aedfd6c3-85d3-407e-a859-e3bd232bdb5b/bin/utaipan-verify-mE87zJ7Ire/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 [2023-11-23 20:33:06,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:33:06,807 INFO L262 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-23 20:33:06,816 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 20:33:07,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 20:33:07,123 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 20:33:07,124 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-23 20:33:07,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1950807364] [2023-11-23 20:33:07,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1950807364] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:33:07,125 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 20:33:07,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 20:33:07,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696149257] [2023-11-23 20:33:07,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:33:07,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 20:33:07,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-23 20:33:07,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 20:33:07,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 20:33:07,180 INFO L87 Difference]: Start difference. First operand has 8 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 7 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 20:33:07,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:33:07,337 INFO L93 Difference]: Finished difference Result 16 states and 24 transitions. [2023-11-23 20:33:07,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 20:33:07,340 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2023-11-23 20:33:07,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:33:07,348 INFO L225 Difference]: With dead ends: 16 [2023-11-23 20:33:07,348 INFO L226 Difference]: Without dead ends: 9 [2023-11-23 20:33:07,351 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-23 20:33:07,354 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 3 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 20:33:07,356 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 6 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 20:33:07,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2023-11-23 20:33:07,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 8. [2023-11-23 20:33:07,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 20:33:07,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2023-11-23 20:33:07,387 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 4 [2023-11-23 20:33:07,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:33:07,387 INFO L495 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2023-11-23 20:33:07,388 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 20:33:07,388 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2023-11-23 20:33:07,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-23 20:33:07,388 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:33:07,389 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1] [2023-11-23 20:33:07,400 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aedfd6c3-85d3-407e-a859-e3bd232bdb5b/bin/utaipan-verify-mE87zJ7Ire/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 [2023-11-23 20:33:07,599 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aedfd6c3-85d3-407e-a859-e3bd232bdb5b/bin/utaipan-verify-mE87zJ7Ire/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 [2023-11-23 20:33:07,600 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 20:33:07,600 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:33:07,600 INFO L85 PathProgramCache]: Analyzing trace with hash -1393329571, now seen corresponding path program 1 times [2023-11-23 20:33:07,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 20:33:07,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1769638348] [2023-11-23 20:33:07,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:33:07,602 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 [2023-11-23 20:33:07,602 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aedfd6c3-85d3-407e-a859-e3bd232bdb5b/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 20:33:07,604 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aedfd6c3-85d3-407e-a859-e3bd232bdb5b/bin/utaipan-verify-mE87zJ7Ire/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) [2023-11-23 20:33:07,606 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aedfd6c3-85d3-407e-a859-e3bd232bdb5b/bin/utaipan-verify-mE87zJ7Ire/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 [2023-11-23 20:33:08,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:33:08,069 INFO L262 TraceCheckSpWp]: Trace formula consists of 627 conjuncts, 111 conjunts are in the unsatisfiable core [2023-11-23 20:33:08,084 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 20:33:10,849 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 20:33:10,850 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 20:33:12,535 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 20:33:12,535 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-23 20:33:12,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1769638348] [2023-11-23 20:33:12,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1769638348] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 20:33:12,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [139467977] [2023-11-23 20:33:12,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:33:12,537 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-23 20:33:12,548 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aedfd6c3-85d3-407e-a859-e3bd232bdb5b/bin/utaipan-verify-mE87zJ7Ire/cvc4 [2023-11-23 20:33:12,553 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aedfd6c3-85d3-407e-a859-e3bd232bdb5b/bin/utaipan-verify-mE87zJ7Ire/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-23 20:33:12,561 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aedfd6c3-85d3-407e-a859-e3bd232bdb5b/bin/utaipan-verify-mE87zJ7Ire/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2023-11-23 20:33:13,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:33:13,224 INFO L262 TraceCheckSpWp]: Trace formula consists of 627 conjuncts, 111 conjunts are in the unsatisfiable core [2023-11-23 20:33:13,236 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 20:33:15,152 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 20:33:15,152 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 20:33:21,091 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 20:33:21,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [139467977] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 20:33:21,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1744334933] [2023-11-23 20:33:21,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:33:21,092 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 20:33:21,092 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aedfd6c3-85d3-407e-a859-e3bd232bdb5b/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 20:33:21,099 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aedfd6c3-85d3-407e-a859-e3bd232bdb5b/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 20:33:21,100 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aedfd6c3-85d3-407e-a859-e3bd232bdb5b/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-23 20:33:21,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:33:21,458 INFO L262 TraceCheckSpWp]: Trace formula consists of 627 conjuncts, 125 conjunts are in the unsatisfiable core [2023-11-23 20:33:21,469 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 20:33:27,833 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 20:33:27,833 INFO L327 TraceCheckSpWp]: Computing backward predicates...