./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-benchs/rlim_invariant.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_901f67a0-9fbb-4a5c-8a02-63e7febb4882/bin/uautomizer-DQz5hQGWxF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_901f67a0-9fbb-4a5c-8a02-63e7febb4882/bin/uautomizer-DQz5hQGWxF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_901f67a0-9fbb-4a5c-8a02-63e7febb4882/bin/uautomizer-DQz5hQGWxF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_901f67a0-9fbb-4a5c-8a02-63e7febb4882/bin/uautomizer-DQz5hQGWxF/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-benchs/rlim_invariant.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_901f67a0-9fbb-4a5c-8a02-63e7febb4882/bin/uautomizer-DQz5hQGWxF/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_901f67a0-9fbb-4a5c-8a02-63e7febb4882/bin/uautomizer-DQz5hQGWxF --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 32bit --witnessprinter.graph.data.programhash d395d439ec4556dc83dba3523bab6fe5cf68ec358a108cd3824067669c5e9bc5 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 07:40:34,505 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 07:40:34,509 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 07:40:34,572 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 07:40:34,573 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 07:40:34,577 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 07:40:34,579 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 07:40:34,583 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 07:40:34,586 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 07:40:34,591 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 07:40:34,593 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 07:40:34,595 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 07:40:34,596 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 07:40:34,599 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 07:40:34,601 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 07:40:34,607 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 07:40:34,609 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 07:40:34,610 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 07:40:34,613 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 07:40:34,624 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 07:40:34,626 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 07:40:34,628 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 07:40:34,631 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 07:40:34,632 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 07:40:34,642 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 07:40:34,643 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 07:40:34,643 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 07:40:34,645 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 07:40:34,646 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 07:40:34,648 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 07:40:34,648 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 07:40:34,649 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 07:40:34,651 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 07:40:34,653 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 07:40:34,655 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 07:40:34,655 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 07:40:34,656 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 07:40:34,656 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 07:40:34,656 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 07:40:34,657 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 07:40:34,658 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 07:40:34,659 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_901f67a0-9fbb-4a5c-8a02-63e7febb4882/bin/uautomizer-DQz5hQGWxF/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-20 07:40:34,704 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 07:40:34,704 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 07:40:34,705 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 07:40:34,705 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 07:40:34,713 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-20 07:40:34,713 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-20 07:40:34,714 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-20 07:40:34,714 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-20 07:40:34,714 INFO L138 SettingsManager]: * Use SBE=true [2021-11-20 07:40:34,715 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 07:40:34,716 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-20 07:40:34,716 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-20 07:40:34,716 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-20 07:40:34,717 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 07:40:34,717 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-20 07:40:34,717 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-20 07:40:34,717 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-20 07:40:34,718 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-20 07:40:34,718 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-20 07:40:34,718 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 07:40:34,718 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-20 07:40:34,719 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 07:40:34,719 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-20 07:40:34,719 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-20 07:40:34,719 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 07:40:34,719 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 07:40:34,720 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-20 07:40:34,720 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-20 07:40:34,720 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-20 07:40:34,722 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-20 07:40:34,722 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-20 07:40:34,722 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-20 07:40:34,723 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-20 07:40:34,723 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 07:40:34,723 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_901f67a0-9fbb-4a5c-8a02-63e7febb4882/bin/uautomizer-DQz5hQGWxF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_901f67a0-9fbb-4a5c-8a02-63e7febb4882/bin/uautomizer-DQz5hQGWxF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d395d439ec4556dc83dba3523bab6fe5cf68ec358a108cd3824067669c5e9bc5 [2021-11-20 07:40:35,024 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 07:40:35,048 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 07:40:35,051 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 07:40:35,052 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 07:40:35,053 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 07:40:35,055 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_901f67a0-9fbb-4a5c-8a02-63e7febb4882/bin/uautomizer-DQz5hQGWxF/../../sv-benchmarks/c/float-benchs/rlim_invariant.c [2021-11-20 07:40:35,113 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_901f67a0-9fbb-4a5c-8a02-63e7febb4882/bin/uautomizer-DQz5hQGWxF/data/54f15f38e/d57f89181deb4084b2ee22256a89e374/FLAG96894afd8 [2021-11-20 07:40:35,627 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 07:40:35,627 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_901f67a0-9fbb-4a5c-8a02-63e7febb4882/sv-benchmarks/c/float-benchs/rlim_invariant.c [2021-11-20 07:40:35,639 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_901f67a0-9fbb-4a5c-8a02-63e7febb4882/bin/uautomizer-DQz5hQGWxF/data/54f15f38e/d57f89181deb4084b2ee22256a89e374/FLAG96894afd8 [2021-11-20 07:40:35,995 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_901f67a0-9fbb-4a5c-8a02-63e7febb4882/bin/uautomizer-DQz5hQGWxF/data/54f15f38e/d57f89181deb4084b2ee22256a89e374 [2021-11-20 07:40:35,998 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 07:40:35,999 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 07:40:36,003 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 07:40:36,003 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 07:40:36,006 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 07:40:36,007 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 07:40:35" (1/1) ... [2021-11-20 07:40:36,008 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@60b71704 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:40:36, skipping insertion in model container [2021-11-20 07:40:36,009 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 07:40:35" (1/1) ... [2021-11-20 07:40:36,015 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 07:40:36,033 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 07:40:36,243 WARN L230 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_901f67a0-9fbb-4a5c-8a02-63e7febb4882/sv-benchmarks/c/float-benchs/rlim_invariant.c[451,464] [2021-11-20 07:40:36,266 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 07:40:36,275 INFO L203 MainTranslator]: Completed pre-run [2021-11-20 07:40:36,293 WARN L230 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_901f67a0-9fbb-4a5c-8a02-63e7febb4882/sv-benchmarks/c/float-benchs/rlim_invariant.c[451,464] [2021-11-20 07:40:36,304 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 07:40:36,319 INFO L208 MainTranslator]: Completed translation [2021-11-20 07:40:36,319 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:40:36 WrapperNode [2021-11-20 07:40:36,320 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 07:40:36,322 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-20 07:40:36,322 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-20 07:40:36,323 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-20 07:40:36,330 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:40:36" (1/1) ... [2021-11-20 07:40:36,337 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:40:36" (1/1) ... [2021-11-20 07:40:36,358 INFO L137 Inliner]: procedures = 14, calls = 10, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 47 [2021-11-20 07:40:36,359 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-20 07:40:36,360 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-20 07:40:36,360 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-20 07:40:36,360 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-20 07:40:36,368 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:40:36" (1/1) ... [2021-11-20 07:40:36,368 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:40:36" (1/1) ... [2021-11-20 07:40:36,379 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:40:36" (1/1) ... [2021-11-20 07:40:36,380 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:40:36" (1/1) ... [2021-11-20 07:40:36,389 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:40:36" (1/1) ... [2021-11-20 07:40:36,394 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:40:36" (1/1) ... [2021-11-20 07:40:36,399 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:40:36" (1/1) ... [2021-11-20 07:40:36,401 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-20 07:40:36,403 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-20 07:40:36,403 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-20 07:40:36,403 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-20 07:40:36,404 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:40:36" (1/1) ... [2021-11-20 07:40:36,412 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 07:40:36,424 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_901f67a0-9fbb-4a5c-8a02-63e7febb4882/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:40:36,440 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_901f67a0-9fbb-4a5c-8a02-63e7febb4882/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-20 07:40:36,473 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_901f67a0-9fbb-4a5c-8a02-63e7febb4882/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-20 07:40:36,490 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-20 07:40:36,490 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-20 07:40:36,490 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-20 07:40:36,490 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-20 07:40:36,491 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-20 07:40:36,491 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-20 07:40:36,560 INFO L236 CfgBuilder]: Building ICFG [2021-11-20 07:40:36,561 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-20 07:40:36,712 INFO L277 CfgBuilder]: Performing block encoding [2021-11-20 07:40:36,718 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-20 07:40:36,719 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-20 07:40:36,720 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 07:40:36 BoogieIcfgContainer [2021-11-20 07:40:36,721 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-20 07:40:36,722 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-20 07:40:36,722 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-20 07:40:36,726 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-20 07:40:36,726 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 07:40:35" (1/3) ... [2021-11-20 07:40:36,727 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42cc5c15 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 07:40:36, skipping insertion in model container [2021-11-20 07:40:36,727 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:40:36" (2/3) ... [2021-11-20 07:40:36,728 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42cc5c15 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 07:40:36, skipping insertion in model container [2021-11-20 07:40:36,728 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 07:40:36" (3/3) ... [2021-11-20 07:40:36,729 INFO L111 eAbstractionObserver]: Analyzing ICFG rlim_invariant.c [2021-11-20 07:40:36,734 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-20 07:40:36,735 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-20 07:40:36,783 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-20 07:40:36,790 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-11-20 07:40:36,791 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-20 07:40:36,808 INFO L276 IsEmpty]: Start isEmpty. Operand has 22 states, 17 states have (on average 1.411764705882353) internal successors, (24), 18 states have internal predecessors, (24), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-20 07:40:36,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-20 07:40:36,813 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:40:36,813 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:40:36,814 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:40:36,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:40:36,820 INFO L85 PathProgramCache]: Analyzing trace with hash 1358229485, now seen corresponding path program 1 times [2021-11-20 07:40:36,829 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:40:36,829 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366589841] [2021-11-20 07:40:36,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:40:36,830 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:40:36,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:40:36,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-20 07:40:36,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:40:36,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-20 07:40:36,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:40:36,982 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-20 07:40:36,983 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:40:36,983 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [366589841] [2021-11-20 07:40:36,984 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [366589841] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:40:36,984 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:40:36,984 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-20 07:40:36,986 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136470668] [2021-11-20 07:40:36,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:40:36,991 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-20 07:40:36,991 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:40:37,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-20 07:40:37,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-20 07:40:37,035 INFO L87 Difference]: Start difference. First operand has 22 states, 17 states have (on average 1.411764705882353) internal successors, (24), 18 states have internal predecessors, (24), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-20 07:40:37,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:40:37,069 INFO L93 Difference]: Finished difference Result 42 states and 56 transitions. [2021-11-20 07:40:37,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-20 07:40:37,075 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 18 [2021-11-20 07:40:37,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:40:37,098 INFO L225 Difference]: With dead ends: 42 [2021-11-20 07:40:37,106 INFO L226 Difference]: Without dead ends: 18 [2021-11-20 07:40:37,109 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-20 07:40:37,113 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 07:40:37,114 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 07:40:37,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2021-11-20 07:40:37,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2021-11-20 07:40:37,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 14 states have internal predecessors, (17), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-20 07:40:37,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 21 transitions. [2021-11-20 07:40:37,188 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 21 transitions. Word has length 18 [2021-11-20 07:40:37,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:40:37,190 INFO L470 AbstractCegarLoop]: Abstraction has 18 states and 21 transitions. [2021-11-20 07:40:37,191 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-20 07:40:37,191 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 21 transitions. [2021-11-20 07:40:37,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-20 07:40:37,194 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:40:37,195 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:40:37,195 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-20 07:40:37,196 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:40:37,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:40:37,198 INFO L85 PathProgramCache]: Analyzing trace with hash -37923155, now seen corresponding path program 1 times [2021-11-20 07:40:37,199 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:40:37,199 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1260324685] [2021-11-20 07:40:37,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:40:37,200 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:40:37,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 07:40:37,236 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-20 07:40:37,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 07:40:37,276 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-20 07:40:37,276 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-20 07:40:37,278 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-20 07:40:37,280 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-20 07:40:37,284 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2021-11-20 07:40:37,287 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-20 07:40:37,310 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 07:40:37 BoogieIcfgContainer [2021-11-20 07:40:37,310 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-20 07:40:37,311 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-20 07:40:37,311 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-20 07:40:37,312 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-20 07:40:37,312 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 07:40:36" (3/4) ... [2021-11-20 07:40:37,315 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-20 07:40:37,315 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-20 07:40:37,316 INFO L158 Benchmark]: Toolchain (without parser) took 1316.72ms. Allocated memory was 81.8MB in the beginning and 98.6MB in the end (delta: 16.8MB). Free memory was 41.8MB in the beginning and 31.3MB in the end (delta: 10.5MB). Peak memory consumption was 24.7MB. Max. memory is 16.1GB. [2021-11-20 07:40:37,317 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 81.8MB. Free memory was 57.8MB in the beginning and 57.8MB in the end (delta: 30.8kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-20 07:40:37,318 INFO L158 Benchmark]: CACSL2BoogieTranslator took 317.78ms. Allocated memory was 81.8MB in the beginning and 98.6MB in the end (delta: 16.8MB). Free memory was 41.6MB in the beginning and 69.6MB in the end (delta: -28.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-20 07:40:37,321 INFO L158 Benchmark]: Boogie Procedure Inliner took 37.33ms. Allocated memory is still 98.6MB. Free memory was 69.6MB in the beginning and 68.1MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-20 07:40:37,322 INFO L158 Benchmark]: Boogie Preprocessor took 42.13ms. Allocated memory is still 98.6MB. Free memory was 67.9MB in the beginning and 66.9MB in the end (delta: 942.5kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-20 07:40:37,322 INFO L158 Benchmark]: RCFGBuilder took 317.98ms. Allocated memory is still 98.6MB. Free memory was 66.9MB in the beginning and 57.4MB in the end (delta: 9.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-20 07:40:37,326 INFO L158 Benchmark]: TraceAbstraction took 588.14ms. Allocated memory is still 98.6MB. Free memory was 56.7MB in the beginning and 31.5MB in the end (delta: 25.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2021-11-20 07:40:37,327 INFO L158 Benchmark]: Witness Printer took 4.37ms. Allocated memory is still 98.6MB. Free memory was 31.5MB in the beginning and 31.3MB in the end (delta: 288.3kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-20 07:40:37,332 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28ms. Allocated memory is still 81.8MB. Free memory was 57.8MB in the beginning and 57.8MB in the end (delta: 30.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 317.78ms. Allocated memory was 81.8MB in the beginning and 98.6MB in the end (delta: 16.8MB). Free memory was 41.6MB in the beginning and 69.6MB in the end (delta: -28.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 37.33ms. Allocated memory is still 98.6MB. Free memory was 69.6MB in the beginning and 68.1MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 42.13ms. Allocated memory is still 98.6MB. Free memory was 67.9MB in the beginning and 66.9MB in the end (delta: 942.5kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 317.98ms. Allocated memory is still 98.6MB. Free memory was 66.9MB in the beginning and 57.4MB in the end (delta: 9.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 588.14ms. Allocated memory is still 98.6MB. Free memory was 56.7MB in the beginning and 31.5MB in the end (delta: 25.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Witness Printer took 4.37ms. Allocated memory is still 98.6MB. Free memory was 31.5MB in the beginning and 31.3MB in the end (delta: 288.3kB). 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: 10]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 32, overapproximation of to_real at line 17, overapproximation of someBinaryArithmeticFLOAToperation at line 29. Possible FailurePath: [L14] float X, Y, S, R, D; [L15] int i; [L17] Y = 0 [L19] i = 0 VAL [i=0] [L19] COND TRUE i < 100000 [L21] X = __VERIFIER_nondet_float() [L22] D = __VERIFIER_nondet_float() [L23] CALL assume_abort_if_not(X >= -128.f && X <= 128.f) VAL [\old(cond)=1] [L8] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L23] RET assume_abort_if_not(X >= -128.f && X <= 128.f) VAL [D=50, i=0, X=51] [L24] CALL assume_abort_if_not(D >= 0.f && D <= 16.f) VAL [\old(cond)=1] [L8] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L24] RET assume_abort_if_not(D >= 0.f && D <= 16.f) VAL [D=50, i=0, X=51] [L26] S = Y [L27] Y = X [L28] R = X - S VAL [D=50, i=0, S=49, X=51, Y=51] [L29] COND TRUE R <= -D [L29] Y = S - D VAL [D=50, i=0, S=49, X=51] [L32] CALL __VERIFIER_assert(Y >= -129.f && Y <= 129.f) [L10] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L10] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 22 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.5s, OverallIterations: 2, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 25 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 0 IncrementalHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 25 mSDtfsCounter, 0 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 8 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=22occurred in iteration=0, InterpolantAutomatonStates: 2, 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, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 36 NumberOfCodeBlocks, 36 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 17 ConstructedInterpolants, 0 QuantifiedInterpolants, 17 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 4/4 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 [2021-11-20 07:40:37,379 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_901f67a0-9fbb-4a5c-8a02-63e7febb4882/bin/uautomizer-DQz5hQGWxF/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/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_901f67a0-9fbb-4a5c-8a02-63e7febb4882/bin/uautomizer-DQz5hQGWxF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_901f67a0-9fbb-4a5c-8a02-63e7febb4882/bin/uautomizer-DQz5hQGWxF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_901f67a0-9fbb-4a5c-8a02-63e7febb4882/bin/uautomizer-DQz5hQGWxF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_901f67a0-9fbb-4a5c-8a02-63e7febb4882/bin/uautomizer-DQz5hQGWxF/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-benchs/rlim_invariant.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_901f67a0-9fbb-4a5c-8a02-63e7febb4882/bin/uautomizer-DQz5hQGWxF/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_901f67a0-9fbb-4a5c-8a02-63e7febb4882/bin/uautomizer-DQz5hQGWxF --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 32bit --witnessprinter.graph.data.programhash d395d439ec4556dc83dba3523bab6fe5cf68ec358a108cd3824067669c5e9bc5 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 07:40:39,811 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 07:40:39,813 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 07:40:39,850 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 07:40:39,851 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 07:40:39,852 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 07:40:39,854 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 07:40:39,856 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 07:40:39,859 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 07:40:39,864 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 07:40:39,865 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 07:40:39,868 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 07:40:39,870 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 07:40:39,872 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 07:40:39,874 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 07:40:39,877 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 07:40:39,881 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 07:40:39,882 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 07:40:39,886 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 07:40:39,892 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 07:40:39,894 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 07:40:39,896 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 07:40:39,898 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 07:40:39,900 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 07:40:39,903 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 07:40:39,903 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 07:40:39,904 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 07:40:39,905 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 07:40:39,905 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 07:40:39,906 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 07:40:39,907 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 07:40:39,908 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 07:40:39,909 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 07:40:39,909 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 07:40:39,923 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 07:40:39,924 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 07:40:39,924 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 07:40:39,925 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 07:40:39,925 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 07:40:39,926 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 07:40:39,927 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 07:40:39,928 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_901f67a0-9fbb-4a5c-8a02-63e7febb4882/bin/uautomizer-DQz5hQGWxF/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-11-20 07:40:39,971 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 07:40:39,972 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 07:40:39,972 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 07:40:39,972 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 07:40:39,973 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-20 07:40:39,974 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-20 07:40:39,975 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-20 07:40:39,975 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-20 07:40:39,975 INFO L138 SettingsManager]: * Use SBE=true [2021-11-20 07:40:39,976 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 07:40:39,976 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-20 07:40:39,977 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-20 07:40:39,977 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 07:40:39,977 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-20 07:40:39,977 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-20 07:40:39,977 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-20 07:40:39,978 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-20 07:40:39,978 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-20 07:40:39,978 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-20 07:40:39,978 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-20 07:40:39,978 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-20 07:40:39,979 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 07:40:39,979 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-20 07:40:39,979 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 07:40:39,979 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-20 07:40:39,979 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-20 07:40:39,980 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 07:40:39,980 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 07:40:39,980 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-20 07:40:39,980 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-20 07:40:39,980 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-11-20 07:40:39,981 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-20 07:40:39,981 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-20 07:40:39,981 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-20 07:40:39,981 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-20 07:40:39,982 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 07:40:39,982 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-20 07:40:39,982 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_901f67a0-9fbb-4a5c-8a02-63e7febb4882/bin/uautomizer-DQz5hQGWxF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_901f67a0-9fbb-4a5c-8a02-63e7febb4882/bin/uautomizer-DQz5hQGWxF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d395d439ec4556dc83dba3523bab6fe5cf68ec358a108cd3824067669c5e9bc5 [2021-11-20 07:40:40,396 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 07:40:40,426 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 07:40:40,429 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 07:40:40,430 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 07:40:40,433 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 07:40:40,435 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_901f67a0-9fbb-4a5c-8a02-63e7febb4882/bin/uautomizer-DQz5hQGWxF/../../sv-benchmarks/c/float-benchs/rlim_invariant.c [2021-11-20 07:40:40,500 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_901f67a0-9fbb-4a5c-8a02-63e7febb4882/bin/uautomizer-DQz5hQGWxF/data/25b267360/a26b7699fae342d2a5a9143b58e19932/FLAG0285692e6 [2021-11-20 07:40:41,078 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 07:40:41,080 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_901f67a0-9fbb-4a5c-8a02-63e7febb4882/sv-benchmarks/c/float-benchs/rlim_invariant.c [2021-11-20 07:40:41,105 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_901f67a0-9fbb-4a5c-8a02-63e7febb4882/bin/uautomizer-DQz5hQGWxF/data/25b267360/a26b7699fae342d2a5a9143b58e19932/FLAG0285692e6 [2021-11-20 07:40:41,445 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_901f67a0-9fbb-4a5c-8a02-63e7febb4882/bin/uautomizer-DQz5hQGWxF/data/25b267360/a26b7699fae342d2a5a9143b58e19932 [2021-11-20 07:40:41,449 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 07:40:41,452 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 07:40:41,455 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 07:40:41,455 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 07:40:41,460 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 07:40:41,461 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 07:40:41" (1/1) ... [2021-11-20 07:40:41,463 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e408dd5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:40:41, skipping insertion in model container [2021-11-20 07:40:41,463 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 07:40:41" (1/1) ... [2021-11-20 07:40:41,471 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 07:40:41,488 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 07:40:41,678 WARN L230 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_901f67a0-9fbb-4a5c-8a02-63e7febb4882/sv-benchmarks/c/float-benchs/rlim_invariant.c[451,464] [2021-11-20 07:40:41,699 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 07:40:41,712 INFO L203 MainTranslator]: Completed pre-run [2021-11-20 07:40:41,729 WARN L230 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_901f67a0-9fbb-4a5c-8a02-63e7febb4882/sv-benchmarks/c/float-benchs/rlim_invariant.c[451,464] [2021-11-20 07:40:41,746 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 07:40:41,784 INFO L208 MainTranslator]: Completed translation [2021-11-20 07:40:41,785 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:40:41 WrapperNode [2021-11-20 07:40:41,786 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 07:40:41,787 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-20 07:40:41,787 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-20 07:40:41,787 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-20 07:40:41,794 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:40:41" (1/1) ... [2021-11-20 07:40:41,805 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:40:41" (1/1) ... [2021-11-20 07:40:41,843 INFO L137 Inliner]: procedures = 15, calls = 10, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 48 [2021-11-20 07:40:41,843 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-20 07:40:41,844 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-20 07:40:41,844 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-20 07:40:41,844 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-20 07:40:41,852 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:40:41" (1/1) ... [2021-11-20 07:40:41,852 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:40:41" (1/1) ... [2021-11-20 07:40:41,855 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:40:41" (1/1) ... [2021-11-20 07:40:41,855 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:40:41" (1/1) ... [2021-11-20 07:40:41,861 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:40:41" (1/1) ... [2021-11-20 07:40:41,865 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:40:41" (1/1) ... [2021-11-20 07:40:41,867 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:40:41" (1/1) ... [2021-11-20 07:40:41,870 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-20 07:40:41,871 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-20 07:40:41,871 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-20 07:40:41,871 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-20 07:40:41,872 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:40:41" (1/1) ... [2021-11-20 07:40:41,884 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 07:40:41,896 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_901f67a0-9fbb-4a5c-8a02-63e7febb4882/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:40:41,919 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_901f67a0-9fbb-4a5c-8a02-63e7febb4882/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-20 07:40:41,934 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_901f67a0-9fbb-4a5c-8a02-63e7febb4882/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-20 07:40:41,962 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-20 07:40:41,963 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-20 07:40:41,963 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-20 07:40:41,963 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-20 07:40:41,963 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-20 07:40:41,963 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-20 07:40:42,027 INFO L236 CfgBuilder]: Building ICFG [2021-11-20 07:40:42,029 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-20 07:40:42,284 INFO L277 CfgBuilder]: Performing block encoding [2021-11-20 07:40:42,289 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-20 07:40:42,290 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-20 07:40:42,291 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 07:40:42 BoogieIcfgContainer [2021-11-20 07:40:42,292 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-20 07:40:42,293 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-20 07:40:42,293 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-20 07:40:42,296 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-20 07:40:42,297 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 07:40:41" (1/3) ... [2021-11-20 07:40:42,298 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f94da77 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 07:40:42, skipping insertion in model container [2021-11-20 07:40:42,298 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:40:41" (2/3) ... [2021-11-20 07:40:42,298 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f94da77 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 07:40:42, skipping insertion in model container [2021-11-20 07:40:42,299 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 07:40:42" (3/3) ... [2021-11-20 07:40:42,300 INFO L111 eAbstractionObserver]: Analyzing ICFG rlim_invariant.c [2021-11-20 07:40:42,305 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-20 07:40:42,305 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-20 07:40:42,351 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-20 07:40:42,358 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-11-20 07:40:42,359 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-20 07:40:42,373 INFO L276 IsEmpty]: Start isEmpty. Operand has 22 states, 17 states have (on average 1.411764705882353) internal successors, (24), 18 states have internal predecessors, (24), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-20 07:40:42,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-20 07:40:42,379 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:40:42,380 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:40:42,381 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:40:42,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:40:42,386 INFO L85 PathProgramCache]: Analyzing trace with hash 1358229485, now seen corresponding path program 1 times [2021-11-20 07:40:42,397 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 07:40:42,398 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [752858006] [2021-11-20 07:40:42,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:40:42,399 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 07:40:42,399 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_901f67a0-9fbb-4a5c-8a02-63e7febb4882/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 07:40:42,402 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_901f67a0-9fbb-4a5c-8a02-63e7febb4882/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 07:40:42,436 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_901f67a0-9fbb-4a5c-8a02-63e7febb4882/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-20 07:40:42,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:40:42,558 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-20 07:40:42,563 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:40:42,647 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-20 07:40:42,648 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:40:42,769 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-20 07:40:42,770 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 07:40:42,770 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [752858006] [2021-11-20 07:40:42,771 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [752858006] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 07:40:42,771 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:40:42,771 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-20 07:40:42,773 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214449521] [2021-11-20 07:40:42,774 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 07:40:42,778 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-20 07:40:42,778 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 07:40:42,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-20 07:40:42,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-20 07:40:42,848 INFO L87 Difference]: Start difference. First operand has 22 states, 17 states have (on average 1.411764705882353) internal successors, (24), 18 states have internal predecessors, (24), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-20 07:40:42,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:40:42,884 INFO L93 Difference]: Finished difference Result 42 states and 56 transitions. [2021-11-20 07:40:42,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-20 07:40:42,900 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 18 [2021-11-20 07:40:42,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:40:42,906 INFO L225 Difference]: With dead ends: 42 [2021-11-20 07:40:42,907 INFO L226 Difference]: Without dead ends: 18 [2021-11-20 07:40:42,910 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-20 07:40:42,914 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 07:40:42,923 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 07:40:42,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2021-11-20 07:40:42,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2021-11-20 07:40:42,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 14 states have internal predecessors, (17), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-20 07:40:42,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 21 transitions. [2021-11-20 07:40:42,958 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 21 transitions. Word has length 18 [2021-11-20 07:40:42,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:40:42,959 INFO L470 AbstractCegarLoop]: Abstraction has 18 states and 21 transitions. [2021-11-20 07:40:42,961 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-20 07:40:42,961 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 21 transitions. [2021-11-20 07:40:42,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-20 07:40:42,962 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:40:42,963 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:40:42,980 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_901f67a0-9fbb-4a5c-8a02-63e7febb4882/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-20 07:40:43,176 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_901f67a0-9fbb-4a5c-8a02-63e7febb4882/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 07:40:43,177 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:40:43,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:40:43,178 INFO L85 PathProgramCache]: Analyzing trace with hash -37923155, now seen corresponding path program 1 times [2021-11-20 07:40:43,179 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 07:40:43,179 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [690231424] [2021-11-20 07:40:43,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:40:43,180 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 07:40:43,180 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_901f67a0-9fbb-4a5c-8a02-63e7febb4882/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 07:40:43,181 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_901f67a0-9fbb-4a5c-8a02-63e7febb4882/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 07:40:43,184 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_901f67a0-9fbb-4a5c-8a02-63e7febb4882/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-20 07:40:43,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:40:43,324 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-20 07:40:43,326 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:40:43,953 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-20 07:40:43,953 INFO L328 TraceCheckSpWp]: Computing backward predicates...