./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.brp.3.prop1-back-serstep.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 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_29f0540a-deb9-425f-9dae-eecd5828c789/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29f0540a-deb9-425f-9dae-eecd5828c789/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29f0540a-deb9-425f-9dae-eecd5828c789/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29f0540a-deb9-425f-9dae-eecd5828c789/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.brp.3.prop1-back-serstep.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29f0540a-deb9-425f-9dae-eecd5828c789/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29f0540a-deb9-425f-9dae-eecd5828c789/bin/uautomizer-uyxdKDjOR8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash a6a9fcd02da26af7d325aaa9af7ff43790a2b784c4bc27cbf779dfc7d23a188a --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-13 11:33:00,264 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 11:33:00,265 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 11:33:00,279 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 11:33:00,280 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 11:33:00,280 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 11:33:00,281 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 11:33:00,282 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 11:33:00,284 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 11:33:00,284 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 11:33:00,285 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 11:33:00,286 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 11:33:00,286 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 11:33:00,287 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 11:33:00,288 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 11:33:00,289 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 11:33:00,289 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 11:33:00,290 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 11:33:00,291 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 11:33:00,294 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 11:33:00,295 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 11:33:00,296 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 11:33:00,297 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 11:33:00,298 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 11:33:00,300 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 11:33:00,300 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 11:33:00,300 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 11:33:00,301 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 11:33:00,301 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 11:33:00,302 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 11:33:00,302 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 11:33:00,303 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 11:33:00,303 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 11:33:00,304 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 11:33:00,305 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 11:33:00,305 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 11:33:00,305 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 11:33:00,306 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 11:33:00,306 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 11:33:00,307 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 11:33:00,307 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 11:33:00,308 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29f0540a-deb9-425f-9dae-eecd5828c789/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-12-13 11:33:00,323 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 11:33:00,323 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 11:33:00,323 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 11:33:00,323 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 11:33:00,324 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 11:33:00,324 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 11:33:00,325 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 11:33:00,325 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 11:33:00,325 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 11:33:00,325 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 11:33:00,325 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 11:33:00,325 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 11:33:00,325 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 11:33:00,326 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 11:33:00,326 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 11:33:00,326 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 11:33:00,326 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 11:33:00,326 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 11:33:00,326 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 11:33:00,327 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 11:33:00,327 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 11:33:00,327 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 11:33:00,327 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 11:33:00,327 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 11:33:00,327 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 11:33:00,328 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 11:33:00,328 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 11:33:00,328 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 11:33:00,328 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 11:33:00,328 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 11:33:00,328 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 11:33:00,328 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 11:33:00,329 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_29f0540a-deb9-425f-9dae-eecd5828c789/bin/uautomizer-uyxdKDjOR8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29f0540a-deb9-425f-9dae-eecd5828c789/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a6a9fcd02da26af7d325aaa9af7ff43790a2b784c4bc27cbf779dfc7d23a188a [2022-12-13 11:33:00,485 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 11:33:00,505 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 11:33:00,507 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 11:33:00,508 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 11:33:00,509 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 11:33:00,510 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29f0540a-deb9-425f-9dae-eecd5828c789/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.brp.3.prop1-back-serstep.c [2022-12-13 11:33:03,165 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 11:33:03,379 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 11:33:03,380 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29f0540a-deb9-425f-9dae-eecd5828c789/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.brp.3.prop1-back-serstep.c [2022-12-13 11:33:03,393 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29f0540a-deb9-425f-9dae-eecd5828c789/bin/uautomizer-uyxdKDjOR8/data/2c5144f54/aca5a185aab54ce3a4ea9d793c2abde1/FLAG6e8a64b6b [2022-12-13 11:33:03,403 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29f0540a-deb9-425f-9dae-eecd5828c789/bin/uautomizer-uyxdKDjOR8/data/2c5144f54/aca5a185aab54ce3a4ea9d793c2abde1 [2022-12-13 11:33:03,405 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 11:33:03,406 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 11:33:03,407 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 11:33:03,407 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 11:33:03,410 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 11:33:03,411 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 11:33:03" (1/1) ... [2022-12-13 11:33:03,411 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@69039224 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:33:03, skipping insertion in model container [2022-12-13 11:33:03,411 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 11:33:03" (1/1) ... [2022-12-13 11:33:03,417 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 11:33:03,466 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 11:33:03,595 WARN L237 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_29f0540a-deb9-425f-9dae-eecd5828c789/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.brp.3.prop1-back-serstep.c[1014,1027] [2022-12-13 11:33:03,883 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 11:33:03,888 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 11:33:03,899 WARN L237 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_29f0540a-deb9-425f-9dae-eecd5828c789/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.brp.3.prop1-back-serstep.c[1014,1027] [2022-12-13 11:33:04,019 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 11:33:04,028 INFO L208 MainTranslator]: Completed translation [2022-12-13 11:33:04,029 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:33:04 WrapperNode [2022-12-13 11:33:04,029 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 11:33:04,030 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 11:33:04,030 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 11:33:04,030 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 11:33:04,035 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:33:04" (1/1) ... [2022-12-13 11:33:04,070 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:33:04" (1/1) ... [2022-12-13 11:33:04,171 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 2855 [2022-12-13 11:33:04,171 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 11:33:04,172 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 11:33:04,172 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 11:33:04,172 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 11:33:04,179 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:33:04" (1/1) ... [2022-12-13 11:33:04,179 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:33:04" (1/1) ... [2022-12-13 11:33:04,218 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:33:04" (1/1) ... [2022-12-13 11:33:04,218 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:33:04" (1/1) ... [2022-12-13 11:33:04,269 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:33:04" (1/1) ... [2022-12-13 11:33:04,274 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:33:04" (1/1) ... [2022-12-13 11:33:04,292 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:33:04" (1/1) ... [2022-12-13 11:33:04,300 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:33:04" (1/1) ... [2022-12-13 11:33:04,329 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 11:33:04,330 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 11:33:04,331 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 11:33:04,331 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 11:33:04,331 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:33:04" (1/1) ... [2022-12-13 11:33:04,338 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 11:33:04,347 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29f0540a-deb9-425f-9dae-eecd5828c789/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:33:04,358 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29f0540a-deb9-425f-9dae-eecd5828c789/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 11:33:04,360 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29f0540a-deb9-425f-9dae-eecd5828c789/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 11:33:04,391 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 11:33:04,392 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 11:33:04,754 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 11:33:04,756 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 11:43:03,560 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 11:43:03,565 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 11:43:03,566 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-12-13 11:43:03,567 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 11:43:03 BoogieIcfgContainer [2022-12-13 11:43:03,567 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 11:43:03,569 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 11:43:03,569 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 11:43:03,571 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 11:43:03,571 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 11:33:03" (1/3) ... [2022-12-13 11:43:03,572 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b26e1dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 11:43:03, skipping insertion in model container [2022-12-13 11:43:03,572 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:33:04" (2/3) ... [2022-12-13 11:43:03,572 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b26e1dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 11:43:03, skipping insertion in model container [2022-12-13 11:43:03,572 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 11:43:03" (3/3) ... [2022-12-13 11:43:03,574 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.brp.3.prop1-back-serstep.c [2022-12-13 11:43:03,587 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 11:43:03,588 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-13 11:43:03,622 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 11:43:03,627 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=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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;@2c5f9f90, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 11:43:03,627 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-13 11:43:03,630 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) [2022-12-13 11:43:03,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-12-13 11:43:03,634 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:43:03,635 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-12-13 11:43:03,635 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:43:03,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:43:03,639 INFO L85 PathProgramCache]: Analyzing trace with hash 28698761, now seen corresponding path program 1 times [2022-12-13 11:43:03,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:43:03,646 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603609470] [2022-12-13 11:43:03,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:43:03,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:43:03,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:43:05,350 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:43:05,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:43:05,351 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1603609470] [2022-12-13 11:43:05,351 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1603609470] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:43:05,352 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:43:05,352 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 11:43:05,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857156196] [2022-12-13 11:43:05,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:43:05,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 11:43:05,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:43:05,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 11:43:05,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 11:43:05,378 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) [2022-12-13 11:43:08,108 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 11:43:10,145 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 11:43:10,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:43:10,776 INFO L93 Difference]: Finished difference Result 19 states and 27 transitions. [2022-12-13 11:43:10,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 11:43:10,778 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 [2022-12-13 11:43:10,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:43:10,783 INFO L225 Difference]: With dead ends: 19 [2022-12-13 11:43:10,784 INFO L226 Difference]: Without dead ends: 10 [2022-12-13 11:43:10,785 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 [2022-12-13 11:43:10,787 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 3 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2022-12-13 11:43:10,788 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 11 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 2 Unknown, 0 Unchecked, 5.4s Time] [2022-12-13 11:43:10,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2022-12-13 11:43:10,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 9. [2022-12-13 11:43:10,808 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) [2022-12-13 11:43:10,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2022-12-13 11:43:10,809 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 5 [2022-12-13 11:43:10,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:43:10,809 INFO L495 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2022-12-13 11:43:10,810 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) [2022-12-13 11:43:10,810 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2022-12-13 11:43:10,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-12-13 11:43:10,810 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:43:10,810 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2022-12-13 11:43:10,810 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 11:43:10,811 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:43:10,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:43:10,811 INFO L85 PathProgramCache]: Analyzing trace with hash 271073635, now seen corresponding path program 1 times [2022-12-13 11:43:10,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:43:10,812 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002671211] [2022-12-13 11:43:10,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:43:10,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms