./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.diagonal.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e04fb08f Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fc073b6-8083-4467-8b2a-33a6dfc5a5c0/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fc073b6-8083-4467-8b2a-33a6dfc5a5c0/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fc073b6-8083-4467-8b2a-33a6dfc5a5c0/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fc073b6-8083-4467-8b2a-33a6dfc5a5c0/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.diagonal.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fc073b6-8083-4467-8b2a-33a6dfc5a5c0/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fc073b6-8083-4467-8b2a-33a6dfc5a5c0/bin/uautomizer-tPACEb0tL8 --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 0bbe822661921a086d2e8463a9fe627e3d2feec0733ded33ee82f90f38d03493 --- 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-e04fb08 [2022-11-16 12:31:08,231 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 12:31:08,237 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 12:31:08,280 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 12:31:08,284 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 12:31:08,289 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 12:31:08,292 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 12:31:08,298 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 12:31:08,302 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 12:31:08,306 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 12:31:08,308 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 12:31:08,310 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 12:31:08,312 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 12:31:08,320 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 12:31:08,322 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 12:31:08,325 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 12:31:08,328 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 12:31:08,329 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 12:31:08,332 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 12:31:08,334 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 12:31:08,339 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 12:31:08,341 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 12:31:08,345 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 12:31:08,347 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 12:31:08,351 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 12:31:08,352 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 12:31:08,352 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 12:31:08,353 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 12:31:08,354 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 12:31:08,355 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 12:31:08,355 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 12:31:08,356 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 12:31:08,357 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 12:31:08,358 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 12:31:08,359 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 12:31:08,360 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 12:31:08,361 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 12:31:08,361 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 12:31:08,362 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 12:31:08,363 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 12:31:08,364 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 12:31:08,365 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fc073b6-8083-4467-8b2a-33a6dfc5a5c0/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-11-16 12:31:08,395 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 12:31:08,395 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 12:31:08,396 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 12:31:08,396 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 12:31:08,397 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 12:31:08,398 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 12:31:08,399 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 12:31:08,399 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 12:31:08,399 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 12:31:08,400 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 12:31:08,400 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 12:31:08,401 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 12:31:08,401 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 12:31:08,401 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 12:31:08,402 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 12:31:08,402 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 12:31:08,402 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 12:31:08,403 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 12:31:08,403 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 12:31:08,403 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 12:31:08,404 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 12:31:08,404 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:31:08,404 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 12:31:08,405 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 12:31:08,405 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 12:31:08,406 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 12:31:08,406 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 12:31:08,406 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 12:31:08,407 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 12:31:08,407 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 12:31:08,407 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_1fc073b6-8083-4467-8b2a-33a6dfc5a5c0/bin/uautomizer-tPACEb0tL8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fc073b6-8083-4467-8b2a-33a6dfc5a5c0/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0bbe822661921a086d2e8463a9fe627e3d2feec0733ded33ee82f90f38d03493 [2022-11-16 12:31:08,700 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 12:31:08,735 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 12:31:08,738 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 12:31:08,740 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 12:31:08,741 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 12:31:08,742 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fc073b6-8083-4467-8b2a-33a6dfc5a5c0/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.diagonal.c [2022-11-16 12:31:08,852 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fc073b6-8083-4467-8b2a-33a6dfc5a5c0/bin/uautomizer-tPACEb0tL8/data/f1b9169da/27c86a24d4bf4a63b4bdcb7ef8d78fdf/FLAG34dbfda29 [2022-11-16 12:31:09,503 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 12:31:09,504 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fc073b6-8083-4467-8b2a-33a6dfc5a5c0/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.diagonal.c [2022-11-16 12:31:09,517 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fc073b6-8083-4467-8b2a-33a6dfc5a5c0/bin/uautomizer-tPACEb0tL8/data/f1b9169da/27c86a24d4bf4a63b4bdcb7ef8d78fdf/FLAG34dbfda29 [2022-11-16 12:31:09,850 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fc073b6-8083-4467-8b2a-33a6dfc5a5c0/bin/uautomizer-tPACEb0tL8/data/f1b9169da/27c86a24d4bf4a63b4bdcb7ef8d78fdf [2022-11-16 12:31:09,854 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 12:31:09,855 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 12:31:09,857 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 12:31:09,857 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 12:31:09,862 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 12:31:09,863 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:31:09" (1/1) ... [2022-11-16 12:31:09,864 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@727ef761 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:31:09, skipping insertion in model container [2022-11-16 12:31:09,864 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:31:09" (1/1) ... [2022-11-16 12:31:09,873 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 12:31:09,896 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 12:31:10,121 WARN L229 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_1fc073b6-8083-4467-8b2a-33a6dfc5a5c0/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.diagonal.c[1107,1120] [2022-11-16 12:31:10,206 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:31:10,210 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 12:31:10,223 WARN L229 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_1fc073b6-8083-4467-8b2a-33a6dfc5a5c0/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.diagonal.c[1107,1120] [2022-11-16 12:31:10,260 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:31:10,275 INFO L208 MainTranslator]: Completed translation [2022-11-16 12:31:10,275 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:31:10 WrapperNode [2022-11-16 12:31:10,275 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 12:31:10,277 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 12:31:10,277 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 12:31:10,277 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 12:31:10,287 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:31:10" (1/1) ... [2022-11-16 12:31:10,297 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:31:10" (1/1) ... [2022-11-16 12:31:10,332 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 181 [2022-11-16 12:31:10,332 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 12:31:10,333 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 12:31:10,334 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 12:31:10,334 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 12:31:10,345 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:31:10" (1/1) ... [2022-11-16 12:31:10,345 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:31:10" (1/1) ... [2022-11-16 12:31:10,349 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:31:10" (1/1) ... [2022-11-16 12:31:10,349 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:31:10" (1/1) ... [2022-11-16 12:31:10,358 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:31:10" (1/1) ... [2022-11-16 12:31:10,362 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:31:10" (1/1) ... [2022-11-16 12:31:10,365 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:31:10" (1/1) ... [2022-11-16 12:31:10,367 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:31:10" (1/1) ... [2022-11-16 12:31:10,370 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 12:31:10,371 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 12:31:10,371 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 12:31:10,372 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 12:31:10,373 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:31:10" (1/1) ... [2022-11-16 12:31:10,396 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:31:10,416 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fc073b6-8083-4467-8b2a-33a6dfc5a5c0/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:31:10,434 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fc073b6-8083-4467-8b2a-33a6dfc5a5c0/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 12:31:10,437 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fc073b6-8083-4467-8b2a-33a6dfc5a5c0/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 12:31:10,478 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 12:31:10,479 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 12:31:10,594 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 12:31:10,596 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 12:31:10,932 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 12:31:10,942 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 12:31:10,942 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-16 12:31:10,944 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:31:10 BoogieIcfgContainer [2022-11-16 12:31:10,945 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 12:31:10,964 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 12:31:10,964 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 12:31:10,971 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 12:31:10,971 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 12:31:09" (1/3) ... [2022-11-16 12:31:10,972 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1eb9640a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:31:10, skipping insertion in model container [2022-11-16 12:31:10,973 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:31:10" (2/3) ... [2022-11-16 12:31:10,973 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1eb9640a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:31:10, skipping insertion in model container [2022-11-16 12:31:10,973 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:31:10" (3/3) ... [2022-11-16 12:31:10,975 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.diagonal.c [2022-11-16 12:31:11,012 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 12:31:11,012 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-16 12:31:11,078 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 12:31:11,088 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;@1f088fa3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 12:31:11,088 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-16 12:31:11,094 INFO L276 IsEmpty]: Start isEmpty. Operand has 32 states, 30 states have (on average 1.6) internal successors, (48), 31 states have internal predecessors, (48), 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) [2022-11-16 12:31:11,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-16 12:31:11,102 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:31:11,103 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:31:11,104 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:31:11,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:31:11,111 INFO L85 PathProgramCache]: Analyzing trace with hash 1809713074, now seen corresponding path program 1 times [2022-11-16 12:31:11,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:31:11,124 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436585547] [2022-11-16 12:31:11,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:31:11,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:31:11,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:31:11,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:31:11,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:31:11,714 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436585547] [2022-11-16 12:31:11,715 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1436585547] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:31:11,715 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:31:11,715 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 12:31:11,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663123767] [2022-11-16 12:31:11,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:31:11,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:31:11,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:31:11,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:31:11,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:31:11,766 INFO L87 Difference]: Start difference. First operand has 32 states, 30 states have (on average 1.6) internal successors, (48), 31 states have internal predecessors, (48), 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 1.75) internal successors, (7), 4 states have internal predecessors, (7), 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) [2022-11-16 12:31:11,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:31:11,860 INFO L93 Difference]: Finished difference Result 85 states and 137 transitions. [2022-11-16 12:31:11,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:31:11,864 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 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 7 [2022-11-16 12:31:11,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:31:11,876 INFO L225 Difference]: With dead ends: 85 [2022-11-16 12:31:11,876 INFO L226 Difference]: Without dead ends: 55 [2022-11-16 12:31:11,880 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 [2022-11-16 12:31:11,885 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 102 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:31:11,887 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 88 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 12:31:11,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2022-11-16 12:31:11,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 30. [2022-11-16 12:31:11,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 29 states have (on average 1.5172413793103448) internal successors, (44), 29 states have internal predecessors, (44), 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) [2022-11-16 12:31:11,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 44 transitions. [2022-11-16 12:31:11,931 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 44 transitions. Word has length 7 [2022-11-16 12:31:11,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:31:11,932 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 44 transitions. [2022-11-16 12:31:11,932 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 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) [2022-11-16 12:31:11,933 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 44 transitions. [2022-11-16 12:31:11,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-16 12:31:11,933 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:31:11,934 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:31:11,934 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 12:31:11,935 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:31:11,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:31:11,936 INFO L85 PathProgramCache]: Analyzing trace with hash 268255406, now seen corresponding path program 1 times [2022-11-16 12:31:11,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:31:11,937 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1658374548] [2022-11-16 12:31:11,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:31:11,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:31:11,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 12:31:11,959 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 12:31:11,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 12:31:11,999 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-16 12:31:11,999 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-16 12:31:12,002 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-16 12:31:12,004 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 12:31:12,009 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1] [2022-11-16 12:31:12,014 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-16 12:31:12,033 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-16 12:31:12,042 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.11 12:31:12 BoogieIcfgContainer [2022-11-16 12:31:12,058 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-16 12:31:12,059 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-16 12:31:12,059 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-16 12:31:12,060 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-16 12:31:12,060 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:31:10" (3/4) ... [2022-11-16 12:31:12,064 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-16 12:31:12,064 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-16 12:31:12,066 INFO L158 Benchmark]: Toolchain (without parser) took 2210.03ms. Allocated memory was 109.1MB in the beginning and 132.1MB in the end (delta: 23.1MB). Free memory was 75.2MB in the beginning and 81.2MB in the end (delta: -6.1MB). Peak memory consumption was 17.4MB. Max. memory is 16.1GB. [2022-11-16 12:31:12,066 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 109.1MB. Free memory is still 60.0MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 12:31:12,067 INFO L158 Benchmark]: CACSL2BoogieTranslator took 418.69ms. Allocated memory is still 109.1MB. Free memory was 75.0MB in the beginning and 82.3MB in the end (delta: -7.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-16 12:31:12,068 INFO L158 Benchmark]: Boogie Procedure Inliner took 55.92ms. Allocated memory is still 109.1MB. Free memory was 81.9MB in the beginning and 79.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-16 12:31:12,069 INFO L158 Benchmark]: Boogie Preprocessor took 37.00ms. Allocated memory is still 109.1MB. Free memory was 79.8MB in the beginning and 78.1MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-16 12:31:12,070 INFO L158 Benchmark]: RCFGBuilder took 573.65ms. Allocated memory is still 109.1MB. Free memory was 78.1MB in the beginning and 60.1MB in the end (delta: 18.0MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2022-11-16 12:31:12,071 INFO L158 Benchmark]: TraceAbstraction took 1094.82ms. Allocated memory was 109.1MB in the beginning and 132.1MB in the end (delta: 23.1MB). Free memory was 59.2MB in the beginning and 81.2MB in the end (delta: -22.0MB). Peak memory consumption was 3.4MB. Max. memory is 16.1GB. [2022-11-16 12:31:12,072 INFO L158 Benchmark]: Witness Printer took 5.56ms. Allocated memory is still 132.1MB. Free memory is still 81.2MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 12:31:12,076 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 109.1MB. Free memory is still 60.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 418.69ms. Allocated memory is still 109.1MB. Free memory was 75.0MB in the beginning and 82.3MB in the end (delta: -7.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 55.92ms. Allocated memory is still 109.1MB. Free memory was 81.9MB in the beginning and 79.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 37.00ms. Allocated memory is still 109.1MB. Free memory was 79.8MB in the beginning and 78.1MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 573.65ms. Allocated memory is still 109.1MB. Free memory was 78.1MB in the beginning and 60.1MB in the end (delta: 18.0MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * TraceAbstraction took 1094.82ms. Allocated memory was 109.1MB in the beginning and 132.1MB in the end (delta: 23.1MB). Free memory was 59.2MB in the beginning and 81.2MB in the end (delta: -22.0MB). Peak memory consumption was 3.4MB. Max. memory is 16.1GB. * Witness Printer took 5.56ms. Allocated memory is still 132.1MB. Free memory is still 81.2MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 20]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of bitwiseComplement at line 56, overapproximation of bitwiseAnd at line 61. Possible FailurePath: [L25] const SORT_1 mask_SORT_1 = (SORT_1)-1 >> (sizeof(SORT_1) * 8 - 1); [L26] const SORT_1 msb_SORT_1 = (SORT_1)1 << (1 - 1); [L28] const SORT_4 mask_SORT_4 = (SORT_4)-1 >> (sizeof(SORT_4) * 8 - 4); [L29] const SORT_4 msb_SORT_4 = (SORT_4)1 << (4 - 1); [L31] const SORT_4 var_5 = 0; [L32] const SORT_1 var_14 = 1; [L33] const SORT_4 var_19 = 1; [L34] const SORT_4 var_22 = 15; [L36] SORT_1 input_2; [L37] SORT_1 input_3; [L39] SORT_4 state_6 = __VERIFIER_nondet_uchar() & mask_SORT_4; [L40] SORT_4 state_8 = __VERIFIER_nondet_uchar() & mask_SORT_4; [L42] SORT_4 init_7_arg_1 = var_5; [L43] state_6 = init_7_arg_1 [L44] SORT_4 init_9_arg_1 = var_5; [L45] state_8 = init_9_arg_1 VAL [init_7_arg_1=0, init_9_arg_1=0, mask_SORT_1=1, mask_SORT_4=15, msb_SORT_1=1, msb_SORT_4=8, state_6=0, state_8=0, var_14=1, var_19=1, var_22=15, var_5=0] [L48] input_2 = __VERIFIER_nondet_uchar() [L49] input_3 = __VERIFIER_nondet_uchar() [L52] SORT_4 var_10_arg_0 = state_6; [L53] SORT_4 var_10_arg_1 = state_8; [L54] SORT_1 var_10 = var_10_arg_0 < var_10_arg_1; [L55] SORT_1 var_11_arg_0 = var_10; [L56] SORT_1 var_11 = ~var_11_arg_0; [L57] SORT_1 var_15_arg_0 = var_11; [L58] SORT_1 var_15 = ~var_15_arg_0; [L59] SORT_1 var_16_arg_0 = var_14; [L60] SORT_1 var_16_arg_1 = var_15; [L61] SORT_1 var_16 = var_16_arg_0 & var_16_arg_1; VAL [init_7_arg_1=0, init_9_arg_1=0, input_2=4, input_3=5, mask_SORT_1=1, mask_SORT_4=15, msb_SORT_1=1, msb_SORT_4=8, state_6=0, state_8=0, var_10=0, var_10_arg_0=0, var_10_arg_1=0, var_11=3, var_11_arg_0=0, var_14=1, var_15=2, var_15_arg_0=3, var_16=1, var_16_arg_0=1, var_16_arg_1=2, var_19=1, var_22=15, var_5=0] [L62] var_16 = var_16 & mask_SORT_1 VAL [init_7_arg_1=0, init_9_arg_1=0, input_2=4, input_3=5, mask_SORT_1=1, mask_SORT_4=15, msb_SORT_1=1, msb_SORT_4=8, state_6=0, state_8=0, var_10=0, var_10_arg_0=0, var_10_arg_1=0, var_11=3, var_11_arg_0=0, var_14=1, var_15=2, var_15_arg_0=3, var_16=1, var_16_arg_0=1, var_16_arg_1=2, var_19=1, var_22=15, var_5=0] [L63] SORT_1 bad_17_arg_0 = var_16; [L64] CALL __VERIFIER_assert(!(bad_17_arg_0)) [L20] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L20] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 32 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.0s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 102 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 102 mSDsluCounter, 88 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 43 mSDsCounter, 1 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 17 IncrementalHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1 mSolverCounterUnsat, 45 mSDtfsCounter, 17 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=32occurred in iteration=0, InterpolantAutomatonStates: 5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 25 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 15 NumberOfCodeBlocks, 15 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 6 ConstructedInterpolants, 0 QuantifiedInterpolants, 11 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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 [2022-11-16 12:31:12,111 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fc073b6-8083-4467-8b2a-33a6dfc5a5c0/bin/uautomizer-tPACEb0tL8/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-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fc073b6-8083-4467-8b2a-33a6dfc5a5c0/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fc073b6-8083-4467-8b2a-33a6dfc5a5c0/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fc073b6-8083-4467-8b2a-33a6dfc5a5c0/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fc073b6-8083-4467-8b2a-33a6dfc5a5c0/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.diagonal.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fc073b6-8083-4467-8b2a-33a6dfc5a5c0/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-64bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fc073b6-8083-4467-8b2a-33a6dfc5a5c0/bin/uautomizer-tPACEb0tL8 --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 0bbe822661921a086d2e8463a9fe627e3d2feec0733ded33ee82f90f38d03493 --- 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-e04fb08 [2022-11-16 12:31:14,819 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 12:31:14,823 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 12:31:14,869 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 12:31:14,871 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 12:31:14,878 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 12:31:14,881 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 12:31:14,889 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 12:31:14,893 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 12:31:14,897 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 12:31:14,899 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 12:31:14,903 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 12:31:14,904 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 12:31:14,912 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 12:31:14,913 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 12:31:14,915 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 12:31:14,918 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 12:31:14,919 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 12:31:14,921 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 12:31:14,923 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 12:31:14,925 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 12:31:14,927 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 12:31:14,928 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 12:31:14,929 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 12:31:14,934 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 12:31:14,935 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 12:31:14,935 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 12:31:14,936 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 12:31:14,937 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 12:31:14,938 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 12:31:14,939 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 12:31:14,940 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 12:31:14,941 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 12:31:14,942 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 12:31:14,943 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 12:31:14,943 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 12:31:14,944 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 12:31:14,945 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 12:31:14,945 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 12:31:14,947 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 12:31:14,948 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 12:31:14,949 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fc073b6-8083-4467-8b2a-33a6dfc5a5c0/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2022-11-16 12:31:14,976 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 12:31:14,977 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 12:31:14,977 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 12:31:14,978 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 12:31:14,979 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 12:31:14,979 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 12:31:14,980 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 12:31:14,980 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 12:31:14,981 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 12:31:14,981 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 12:31:14,981 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 12:31:14,982 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 12:31:14,982 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 12:31:14,982 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 12:31:14,983 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-16 12:31:14,983 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-16 12:31:14,983 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-16 12:31:14,983 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 12:31:14,984 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 12:31:14,984 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 12:31:14,984 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 12:31:14,985 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 12:31:14,985 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 12:31:14,985 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:31:14,986 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 12:31:14,986 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 12:31:14,986 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 12:31:14,986 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-16 12:31:14,987 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-16 12:31:14,987 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 12:31:14,987 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 12:31:14,988 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 12:31:14,988 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-16 12:31:14,988 INFO L138 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_1fc073b6-8083-4467-8b2a-33a6dfc5a5c0/bin/uautomizer-tPACEb0tL8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fc073b6-8083-4467-8b2a-33a6dfc5a5c0/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0bbe822661921a086d2e8463a9fe627e3d2feec0733ded33ee82f90f38d03493 [2022-11-16 12:31:15,496 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 12:31:15,541 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 12:31:15,545 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 12:31:15,547 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 12:31:15,549 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 12:31:15,551 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fc073b6-8083-4467-8b2a-33a6dfc5a5c0/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.diagonal.c [2022-11-16 12:31:15,631 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fc073b6-8083-4467-8b2a-33a6dfc5a5c0/bin/uautomizer-tPACEb0tL8/data/3a6919824/a30e8a5e682147edb6c8a4fc546d6a8c/FLAG807dc5d6b [2022-11-16 12:31:16,356 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 12:31:16,356 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fc073b6-8083-4467-8b2a-33a6dfc5a5c0/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.diagonal.c [2022-11-16 12:31:16,371 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fc073b6-8083-4467-8b2a-33a6dfc5a5c0/bin/uautomizer-tPACEb0tL8/data/3a6919824/a30e8a5e682147edb6c8a4fc546d6a8c/FLAG807dc5d6b [2022-11-16 12:31:16,659 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fc073b6-8083-4467-8b2a-33a6dfc5a5c0/bin/uautomizer-tPACEb0tL8/data/3a6919824/a30e8a5e682147edb6c8a4fc546d6a8c [2022-11-16 12:31:16,662 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 12:31:16,664 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 12:31:16,665 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 12:31:16,665 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 12:31:16,676 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 12:31:16,677 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:31:16" (1/1) ... [2022-11-16 12:31:16,679 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a5108e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:31:16, skipping insertion in model container [2022-11-16 12:31:16,679 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:31:16" (1/1) ... [2022-11-16 12:31:16,688 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 12:31:16,730 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 12:31:16,875 WARN L229 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_1fc073b6-8083-4467-8b2a-33a6dfc5a5c0/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.diagonal.c[1107,1120] [2022-11-16 12:31:16,971 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:31:16,976 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 12:31:17,011 WARN L229 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_1fc073b6-8083-4467-8b2a-33a6dfc5a5c0/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.diagonal.c[1107,1120] [2022-11-16 12:31:17,062 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:31:17,092 INFO L208 MainTranslator]: Completed translation [2022-11-16 12:31:17,092 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:31:17 WrapperNode [2022-11-16 12:31:17,093 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 12:31:17,098 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 12:31:17,098 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 12:31:17,098 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 12:31:17,107 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:31:17" (1/1) ... [2022-11-16 12:31:17,135 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:31:17" (1/1) ... [2022-11-16 12:31:17,177 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 132 [2022-11-16 12:31:17,182 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 12:31:17,185 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 12:31:17,187 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 12:31:17,187 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 12:31:17,198 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:31:17" (1/1) ... [2022-11-16 12:31:17,199 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:31:17" (1/1) ... [2022-11-16 12:31:17,202 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:31:17" (1/1) ... [2022-11-16 12:31:17,203 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:31:17" (1/1) ... [2022-11-16 12:31:17,210 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:31:17" (1/1) ... [2022-11-16 12:31:17,214 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:31:17" (1/1) ... [2022-11-16 12:31:17,216 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:31:17" (1/1) ... [2022-11-16 12:31:17,218 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:31:17" (1/1) ... [2022-11-16 12:31:17,221 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 12:31:17,222 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 12:31:17,222 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 12:31:17,223 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 12:31:17,224 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:31:17" (1/1) ... [2022-11-16 12:31:17,231 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:31:17,245 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fc073b6-8083-4467-8b2a-33a6dfc5a5c0/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:31:17,261 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fc073b6-8083-4467-8b2a-33a6dfc5a5c0/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 12:31:17,278 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fc073b6-8083-4467-8b2a-33a6dfc5a5c0/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 12:31:17,333 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 12:31:17,333 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 12:31:17,489 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 12:31:17,492 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 12:31:17,824 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 12:31:17,832 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 12:31:17,832 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-16 12:31:17,834 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:31:17 BoogieIcfgContainer [2022-11-16 12:31:17,835 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 12:31:17,837 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 12:31:17,837 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 12:31:17,841 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 12:31:17,841 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 12:31:16" (1/3) ... [2022-11-16 12:31:17,842 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20f705a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:31:17, skipping insertion in model container [2022-11-16 12:31:17,843 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:31:17" (2/3) ... [2022-11-16 12:31:17,843 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20f705a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:31:17, skipping insertion in model container [2022-11-16 12:31:17,844 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:31:17" (3/3) ... [2022-11-16 12:31:17,845 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.diagonal.c [2022-11-16 12:31:17,888 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 12:31:17,889 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-16 12:31:17,966 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 12:31:17,977 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;@beb97ce, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 12:31:17,978 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-16 12:31:17,983 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) [2022-11-16 12:31:17,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-16 12:31:17,991 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:31:17,992 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-16 12:31:17,993 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:31:18,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:31:18,002 INFO L85 PathProgramCache]: Analyzing trace with hash 28698761, now seen corresponding path program 1 times [2022-11-16 12:31:18,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:31:18,019 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [573308949] [2022-11-16 12:31:18,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:31:18,020 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 [2022-11-16 12:31:18,021 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fc073b6-8083-4467-8b2a-33a6dfc5a5c0/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:31:18,030 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fc073b6-8083-4467-8b2a-33a6dfc5a5c0/bin/uautomizer-tPACEb0tL8/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) [2022-11-16 12:31:18,045 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fc073b6-8083-4467-8b2a-33a6dfc5a5c0/bin/uautomizer-tPACEb0tL8/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 [2022-11-16 12:31:18,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:31:18,194 WARN L261 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-16 12:31:18,202 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:31:18,509 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:31:18,510 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:31:18,511 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:31:18,511 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [573308949] [2022-11-16 12:31:18,512 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [573308949] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:31:18,512 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:31:18,513 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 12:31:18,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863860380] [2022-11-16 12:31:18,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:31:18,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:31:18,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:31:18,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:31:18,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:31:18,559 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) [2022-11-16 12:31:18,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:31:18,627 INFO L93 Difference]: Finished difference Result 20 states and 30 transitions. [2022-11-16 12:31:18,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:31:18,630 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 [2022-11-16 12:31:18,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:31:18,640 INFO L225 Difference]: With dead ends: 20 [2022-11-16 12:31:18,640 INFO L226 Difference]: Without dead ends: 11 [2022-11-16 12:31:18,643 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 [2022-11-16 12:31:18,648 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 4 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:31:18,649 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 13 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 12:31:18,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2022-11-16 12:31:18,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 9. [2022-11-16 12:31:18,687 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) [2022-11-16 12:31:18,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2022-11-16 12:31:18,689 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 5 [2022-11-16 12:31:18,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:31:18,690 INFO L495 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2022-11-16 12:31:18,690 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) [2022-11-16 12:31:18,690 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2022-11-16 12:31:18,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-16 12:31:18,691 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:31:18,691 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2022-11-16 12:31:18,719 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fc073b6-8083-4467-8b2a-33a6dfc5a5c0/bin/uautomizer-tPACEb0tL8/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 [2022-11-16 12:31:18,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fc073b6-8083-4467-8b2a-33a6dfc5a5c0/bin/uautomizer-tPACEb0tL8/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 [2022-11-16 12:31:18,906 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:31:18,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:31:18,907 INFO L85 PathProgramCache]: Analyzing trace with hash 271073635, now seen corresponding path program 1 times [2022-11-16 12:31:18,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:31:18,908 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [880095630] [2022-11-16 12:31:18,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:31:18,909 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 [2022-11-16 12:31:18,909 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fc073b6-8083-4467-8b2a-33a6dfc5a5c0/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:31:18,911 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fc073b6-8083-4467-8b2a-33a6dfc5a5c0/bin/uautomizer-tPACEb0tL8/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) [2022-11-16 12:31:18,918 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fc073b6-8083-4467-8b2a-33a6dfc5a5c0/bin/uautomizer-tPACEb0tL8/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 [2022-11-16 12:31:19,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:31:19,069 WARN L261 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 67 conjunts are in the unsatisfiable core [2022-11-16 12:31:19,082 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:31:20,201 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:31:20,201 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:31:30,876 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:31:30,877 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:31:30,877 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [880095630] [2022-11-16 12:31:30,878 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [880095630] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:31:30,878 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:31:30,878 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2022-11-16 12:31:30,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665707216] [2022-11-16 12:31:30,879 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:31:30,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 12:31:30,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:31:30,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 12:31:30,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-16 12:31:30,883 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand has 8 states, 8 states have (on average 1.75) internal successors, (14), 8 states have internal predecessors, (14), 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) [2022-11-16 12:31:31,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:31:31,002 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2022-11-16 12:31:31,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 12:31:31,007 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.75) internal successors, (14), 8 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-16 12:31:31,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:31:31,008 INFO L225 Difference]: With dead ends: 16 [2022-11-16 12:31:31,008 INFO L226 Difference]: Without dead ends: 14 [2022-11-16 12:31:31,009 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-16 12:31:31,010 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 11 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 7 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:31:31,011 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 19 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 17 Invalid, 0 Unknown, 7 Unchecked, 0.1s Time] [2022-11-16 12:31:31,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2022-11-16 12:31:31,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 12. [2022-11-16 12:31:31,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 11 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:31:31,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2022-11-16 12:31:31,017 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 8 [2022-11-16 12:31:31,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:31:31,017 INFO L495 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2022-11-16 12:31:31,018 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.75) internal successors, (14), 8 states have internal predecessors, (14), 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) [2022-11-16 12:31:31,018 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2022-11-16 12:31:31,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-16 12:31:31,019 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:31:31,019 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2022-11-16 12:31:31,039 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fc073b6-8083-4467-8b2a-33a6dfc5a5c0/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2022-11-16 12:31:31,234 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fc073b6-8083-4467-8b2a-33a6dfc5a5c0/bin/uautomizer-tPACEb0tL8/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 [2022-11-16 12:31:31,235 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:31:31,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:31:31,236 INFO L85 PathProgramCache]: Analyzing trace with hash 1020920393, now seen corresponding path program 2 times [2022-11-16 12:31:31,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:31:31,237 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2063789918] [2022-11-16 12:31:31,237 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 12:31:31,238 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 [2022-11-16 12:31:31,238 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fc073b6-8083-4467-8b2a-33a6dfc5a5c0/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:31:31,239 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fc073b6-8083-4467-8b2a-33a6dfc5a5c0/bin/uautomizer-tPACEb0tL8/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) [2022-11-16 12:31:31,246 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fc073b6-8083-4467-8b2a-33a6dfc5a5c0/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-11-16 12:31:31,392 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 12:31:31,392 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:31:31,401 WARN L261 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 117 conjunts are in the unsatisfiable core [2022-11-16 12:31:31,408 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:31:32,231 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:31:32,231 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:33:08,244 WARN L233 SmtUtils]: Spent 1.34m on a formula simplification. DAG size of input: 513 DAG size of output: 112 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 12:33:08,417 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:33:08,417 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:33:08,418 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2063789918] [2022-11-16 12:33:08,418 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2063789918] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:33:08,418 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:33:08,419 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2022-11-16 12:33:08,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280696951] [2022-11-16 12:33:08,419 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:33:08,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 12:33:08,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:33:08,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 12:33:08,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-11-16 12:33:08,422 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand has 10 states, 10 states have (on average 2.0) internal successors, (20), 10 states have internal predecessors, (20), 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) [2022-11-16 12:33:08,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:33:08,815 INFO L93 Difference]: Finished difference Result 21 states and 22 transitions. [2022-11-16 12:33:08,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 12:33:08,818 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.0) internal successors, (20), 10 states have internal predecessors, (20), 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 11 [2022-11-16 12:33:08,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:33:08,819 INFO L225 Difference]: With dead ends: 21 [2022-11-16 12:33:08,819 INFO L226 Difference]: Without dead ends: 19 [2022-11-16 12:33:08,820 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 82.3s TimeCoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2022-11-16 12:33:08,822 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 17 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 23 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:33:08,822 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 32 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 35 Invalid, 0 Unknown, 23 Unchecked, 0.1s Time] [2022-11-16 12:33:08,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2022-11-16 12:33:08,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 18. [2022-11-16 12:33:08,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.0588235294117647) internal successors, (18), 17 states have internal predecessors, (18), 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) [2022-11-16 12:33:08,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2022-11-16 12:33:08,829 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 11 [2022-11-16 12:33:08,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:33:08,831 INFO L495 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2022-11-16 12:33:08,831 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.0) internal successors, (20), 10 states have internal predecessors, (20), 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) [2022-11-16 12:33:08,831 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2022-11-16 12:33:08,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-16 12:33:08,832 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:33:08,832 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1] [2022-11-16 12:33:08,848 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fc073b6-8083-4467-8b2a-33a6dfc5a5c0/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-11-16 12:33:09,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fc073b6-8083-4467-8b2a-33a6dfc5a5c0/bin/uautomizer-tPACEb0tL8/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 [2022-11-16 12:33:09,048 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:33:09,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:33:09,048 INFO L85 PathProgramCache]: Analyzing trace with hash -1250702327, now seen corresponding path program 3 times [2022-11-16 12:33:09,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:33:09,050 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [646814847] [2022-11-16 12:33:09,050 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-16 12:33:09,050 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 [2022-11-16 12:33:09,050 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fc073b6-8083-4467-8b2a-33a6dfc5a5c0/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:33:09,052 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fc073b6-8083-4467-8b2a-33a6dfc5a5c0/bin/uautomizer-tPACEb0tL8/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) [2022-11-16 12:33:09,058 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fc073b6-8083-4467-8b2a-33a6dfc5a5c0/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-11-16 12:33:09,286 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-11-16 12:33:09,287 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:33:09,299 WARN L261 TraceCheckSpWp]: Trace formula consists of 408 conjuncts, 229 conjunts are in the unsatisfiable core [2022-11-16 12:33:09,309 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:33:12,655 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:33:12,655 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:36:08,557 WARN L233 SmtUtils]: Spent 2.62m on a formula simplification. DAG size of input: 662 DAG size of output: 364 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)