./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/verifythis/elimination_max_rec_onepoint.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 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_66ec0eea-c455-4a3d-a9f3-0a59155c6798/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66ec0eea-c455-4a3d-a9f3-0a59155c6798/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66ec0eea-c455-4a3d-a9f3-0a59155c6798/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66ec0eea-c455-4a3d-a9f3-0a59155c6798/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/verifythis/elimination_max_rec_onepoint.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66ec0eea-c455-4a3d-a9f3-0a59155c6798/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66ec0eea-c455-4a3d-a9f3-0a59155c6798/bin/uautomizer-uyxdKDjOR8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 3a80fea07b3dad363ac033c87feb8bfcf28a57d2e75bc95b67f90908b133efe1 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-13 13:23:57,191 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 13:23:57,193 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 13:23:57,210 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 13:23:57,211 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 13:23:57,211 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 13:23:57,213 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 13:23:57,214 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 13:23:57,215 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 13:23:57,216 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 13:23:57,217 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 13:23:57,218 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 13:23:57,218 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 13:23:57,219 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 13:23:57,220 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 13:23:57,221 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 13:23:57,222 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 13:23:57,223 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 13:23:57,224 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 13:23:57,226 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 13:23:57,227 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 13:23:57,228 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 13:23:57,229 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 13:23:57,230 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 13:23:57,233 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 13:23:57,233 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 13:23:57,234 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 13:23:57,234 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 13:23:57,235 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 13:23:57,236 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 13:23:57,236 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 13:23:57,237 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 13:23:57,237 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 13:23:57,238 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 13:23:57,239 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 13:23:57,239 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 13:23:57,240 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 13:23:57,240 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 13:23:57,241 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 13:23:57,241 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 13:23:57,242 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 13:23:57,243 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66ec0eea-c455-4a3d-a9f3-0a59155c6798/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-12-13 13:23:57,263 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 13:23:57,263 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 13:23:57,263 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 13:23:57,263 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 13:23:57,264 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 13:23:57,264 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 13:23:57,265 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 13:23:57,265 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 13:23:57,265 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 13:23:57,265 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 13:23:57,265 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 13:23:57,265 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 13:23:57,266 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 13:23:57,266 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 13:23:57,266 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 13:23:57,266 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 13:23:57,266 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 13:23:57,266 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 13:23:57,267 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 13:23:57,267 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 13:23:57,267 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 13:23:57,267 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 13:23:57,267 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 13:23:57,267 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 13:23:57,268 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 13:23:57,268 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 13:23:57,268 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 13:23:57,268 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 13:23:57,268 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 13:23:57,268 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 13:23:57,269 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 13:23:57,269 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 13:23:57,269 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 13:23:57,269 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 13:23:57,269 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 13:23:57,269 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66ec0eea-c455-4a3d-a9f3-0a59155c6798/bin/uautomizer-uyxdKDjOR8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66ec0eea-c455-4a3d-a9f3-0a59155c6798/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3a80fea07b3dad363ac033c87feb8bfcf28a57d2e75bc95b67f90908b133efe1 [2022-12-13 13:23:57,470 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 13:23:57,490 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 13:23:57,492 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 13:23:57,493 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 13:23:57,494 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 13:23:57,494 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66ec0eea-c455-4a3d-a9f3-0a59155c6798/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/verifythis/elimination_max_rec_onepoint.c [2022-12-13 13:24:00,040 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 13:24:00,184 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 13:24:00,184 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66ec0eea-c455-4a3d-a9f3-0a59155c6798/sv-benchmarks/c/verifythis/elimination_max_rec_onepoint.c [2022-12-13 13:24:00,188 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66ec0eea-c455-4a3d-a9f3-0a59155c6798/bin/uautomizer-uyxdKDjOR8/data/2624c5f75/3073b73cee784fe298eb51e572927da7/FLAG839b65a50 [2022-12-13 13:24:00,609 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66ec0eea-c455-4a3d-a9f3-0a59155c6798/bin/uautomizer-uyxdKDjOR8/data/2624c5f75/3073b73cee784fe298eb51e572927da7 [2022-12-13 13:24:00,611 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 13:24:00,611 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 13:24:00,612 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 13:24:00,612 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 13:24:00,615 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 13:24:00,616 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 01:24:00" (1/1) ... [2022-12-13 13:24:00,616 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@226879b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:24:00, skipping insertion in model container [2022-12-13 13:24:00,617 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 01:24:00" (1/1) ... [2022-12-13 13:24:00,622 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 13:24:00,631 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 13:24:00,723 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66ec0eea-c455-4a3d-a9f3-0a59155c6798/sv-benchmarks/c/verifythis/elimination_max_rec_onepoint.c[502,515] [2022-12-13 13:24:00,735 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 13:24:00,743 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 13:24:00,751 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66ec0eea-c455-4a3d-a9f3-0a59155c6798/sv-benchmarks/c/verifythis/elimination_max_rec_onepoint.c[502,515] [2022-12-13 13:24:00,757 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 13:24:00,766 INFO L208 MainTranslator]: Completed translation [2022-12-13 13:24:00,766 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:24:00 WrapperNode [2022-12-13 13:24:00,767 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 13:24:00,767 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 13:24:00,767 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 13:24:00,767 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 13:24:00,772 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:24:00" (1/1) ... [2022-12-13 13:24:00,777 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:24:00" (1/1) ... [2022-12-13 13:24:00,788 INFO L138 Inliner]: procedures = 19, calls = 24, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 36 [2022-12-13 13:24:00,789 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 13:24:00,789 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 13:24:00,789 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 13:24:00,789 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 13:24:00,796 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:24:00" (1/1) ... [2022-12-13 13:24:00,796 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:24:00" (1/1) ... [2022-12-13 13:24:00,797 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:24:00" (1/1) ... [2022-12-13 13:24:00,797 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:24:00" (1/1) ... [2022-12-13 13:24:00,801 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:24:00" (1/1) ... [2022-12-13 13:24:00,802 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:24:00" (1/1) ... [2022-12-13 13:24:00,803 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:24:00" (1/1) ... [2022-12-13 13:24:00,803 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:24:00" (1/1) ... [2022-12-13 13:24:00,804 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 13:24:00,805 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 13:24:00,805 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 13:24:00,805 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 13:24:00,806 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:24:00" (1/1) ... [2022-12-13 13:24:00,810 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 13:24:00,818 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66ec0eea-c455-4a3d-a9f3-0a59155c6798/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:24:00,827 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66ec0eea-c455-4a3d-a9f3-0a59155c6798/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 13:24:00,828 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66ec0eea-c455-4a3d-a9f3-0a59155c6798/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 13:24:00,852 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 13:24:00,852 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-12-13 13:24:00,852 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-12-13 13:24:00,852 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 13:24:00,852 INFO L130 BoogieDeclarations]: Found specification of procedure check [2022-12-13 13:24:00,853 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2022-12-13 13:24:00,853 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-13 13:24:00,853 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 13:24:00,853 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 13:24:00,853 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-13 13:24:00,853 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-12-13 13:24:00,853 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-12-13 13:24:00,853 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 13:24:00,913 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 13:24:00,914 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 13:24:01,023 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 13:24:01,027 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 13:24:01,028 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-13 13:24:01,029 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 01:24:01 BoogieIcfgContainer [2022-12-13 13:24:01,029 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 13:24:01,031 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 13:24:01,031 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 13:24:01,034 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 13:24:01,035 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 01:24:00" (1/3) ... [2022-12-13 13:24:01,035 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7182e8d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 01:24:01, skipping insertion in model container [2022-12-13 13:24:01,035 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:24:00" (2/3) ... [2022-12-13 13:24:01,036 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7182e8d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 01:24:01, skipping insertion in model container [2022-12-13 13:24:01,036 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 01:24:01" (3/3) ... [2022-12-13 13:24:01,037 INFO L112 eAbstractionObserver]: Analyzing ICFG elimination_max_rec_onepoint.c [2022-12-13 13:24:01,053 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 13:24:01,054 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-13 13:24:01,092 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 13:24:01,097 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;@c214e93, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 13:24:01,097 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-13 13:24:01,100 INFO L276 IsEmpty]: Start isEmpty. Operand has 36 states, 23 states have (on average 1.2173913043478262) internal successors, (28), 24 states have internal predecessors, (28), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-12-13 13:24:01,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-12-13 13:24:01,106 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:24:01,106 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:24:01,106 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:24:01,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:24:01,110 INFO L85 PathProgramCache]: Analyzing trace with hash -2131135201, now seen corresponding path program 1 times [2022-12-13 13:24:01,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:24:01,117 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704115305] [2022-12-13 13:24:01,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:24:01,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:24:01,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:24:01,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 13:24:01,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:24:01,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 13:24:01,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:24:01,254 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-13 13:24:01,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:24:01,255 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704115305] [2022-12-13 13:24:01,256 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [704115305] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:24:01,256 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:24:01,256 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 13:24:01,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646653756] [2022-12-13 13:24:01,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:24:01,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-13 13:24:01,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:24:01,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-13 13:24:01,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-13 13:24:01,294 INFO L87 Difference]: Start difference. First operand has 36 states, 23 states have (on average 1.2173913043478262) internal successors, (28), 24 states have internal predecessors, (28), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-13 13:24:01,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:24:01,315 INFO L93 Difference]: Finished difference Result 69 states and 92 transitions. [2022-12-13 13:24:01,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-13 13:24:01,317 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), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 22 [2022-12-13 13:24:01,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:24:01,322 INFO L225 Difference]: With dead ends: 69 [2022-12-13 13:24:01,322 INFO L226 Difference]: Without dead ends: 32 [2022-12-13 13:24:01,324 INFO L412 NwaCegarLoop]: 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 [2022-12-13 13:24:01,327 INFO L413 NwaCegarLoop]: 42 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, 42 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 [2022-12-13 13:24:01,327 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 13:24:01,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2022-12-13 13:24:01,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2022-12-13 13:24:01,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 20 states have (on average 1.15) internal successors, (23), 21 states have internal predecessors, (23), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-12-13 13:24:01,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 38 transitions. [2022-12-13 13:24:01,360 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 38 transitions. Word has length 22 [2022-12-13 13:24:01,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:24:01,360 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 38 transitions. [2022-12-13 13:24:01,361 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-13 13:24:01,361 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 38 transitions. [2022-12-13 13:24:01,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-12-13 13:24:01,362 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:24:01,362 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:24:01,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 13:24:01,367 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:24:01,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:24:01,368 INFO L85 PathProgramCache]: Analyzing trace with hash 427852827, now seen corresponding path program 1 times [2022-12-13 13:24:01,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:24:01,368 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597106966] [2022-12-13 13:24:01,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:24:01,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:24:01,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:24:01,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 13:24:01,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:24:01,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 13:24:01,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:24:01,579 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-13 13:24:01,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:24:01,580 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597106966] [2022-12-13 13:24:01,580 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [597106966] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:24:01,580 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:24:01,580 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 13:24:01,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728725153] [2022-12-13 13:24:01,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:24:01,582 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 13:24:01,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:24:01,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 13:24:01,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-13 13:24:01,583 INFO L87 Difference]: Start difference. First operand 32 states and 38 transitions. Second operand has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-12-13 13:24:01,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:24:01,688 INFO L93 Difference]: Finished difference Result 56 states and 69 transitions. [2022-12-13 13:24:01,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 13:24:01,689 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 22 [2022-12-13 13:24:01,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:24:01,692 INFO L225 Difference]: With dead ends: 56 [2022-12-13 13:24:01,692 INFO L226 Difference]: Without dead ends: 54 [2022-12-13 13:24:01,692 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-12-13 13:24:01,693 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 21 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 160 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 13:24:01,693 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 160 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 13:24:01,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2022-12-13 13:24:01,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 49. [2022-12-13 13:24:01,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 30 states have (on average 1.1666666666666667) internal successors, (35), 32 states have internal predecessors, (35), 13 states have call successors, (13), 5 states have call predecessors, (13), 5 states have return successors, (12), 11 states have call predecessors, (12), 12 states have call successors, (12) [2022-12-13 13:24:01,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 60 transitions. [2022-12-13 13:24:01,704 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 60 transitions. Word has length 22 [2022-12-13 13:24:01,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:24:01,704 INFO L495 AbstractCegarLoop]: Abstraction has 49 states and 60 transitions. [2022-12-13 13:24:01,704 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-12-13 13:24:01,704 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 60 transitions. [2022-12-13 13:24:01,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-12-13 13:24:01,705 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:24:01,706 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:24:01,706 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 13:24:01,706 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:24:01,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:24:01,707 INFO L85 PathProgramCache]: Analyzing trace with hash 1966681632, now seen corresponding path program 1 times [2022-12-13 13:24:01,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:24:01,707 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769340082] [2022-12-13 13:24:01,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:24:01,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:24:01,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:24:01,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 13:24:01,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:24:01,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 13:24:01,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:24:01,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 13:24:01,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:24:01,890 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-13 13:24:01,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:24:01,890 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1769340082] [2022-12-13 13:24:01,890 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1769340082] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:24:01,890 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:24:01,890 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 13:24:01,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894043102] [2022-12-13 13:24:01,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:24:01,891 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 13:24:01,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:24:01,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 13:24:01,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 13:24:01,892 INFO L87 Difference]: Start difference. First operand 49 states and 60 transitions. Second operand has 7 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-12-13 13:24:01,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:24:01,957 INFO L93 Difference]: Finished difference Result 55 states and 65 transitions. [2022-12-13 13:24:01,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 13:24:01,958 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 25 [2022-12-13 13:24:01,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:24:01,959 INFO L225 Difference]: With dead ends: 55 [2022-12-13 13:24:01,959 INFO L226 Difference]: Without dead ends: 47 [2022-12-13 13:24:01,959 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-12-13 13:24:01,961 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 7 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 190 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 13:24:01,961 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 190 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 13:24:01,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2022-12-13 13:24:01,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2022-12-13 13:24:01,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 29 states have (on average 1.1724137931034482) internal successors, (34), 31 states have internal predecessors, (34), 12 states have call successors, (12), 5 states have call predecessors, (12), 5 states have return successors, (11), 10 states have call predecessors, (11), 11 states have call successors, (11) [2022-12-13 13:24:01,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 57 transitions. [2022-12-13 13:24:01,972 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 57 transitions. Word has length 25 [2022-12-13 13:24:01,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:24:01,972 INFO L495 AbstractCegarLoop]: Abstraction has 47 states and 57 transitions. [2022-12-13 13:24:01,972 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-12-13 13:24:01,972 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 57 transitions. [2022-12-13 13:24:01,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-12-13 13:24:01,973 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:24:01,973 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:24:01,974 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 13:24:01,974 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:24:01,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:24:01,974 INFO L85 PathProgramCache]: Analyzing trace with hash 275746502, now seen corresponding path program 1 times [2022-12-13 13:24:01,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:24:01,975 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [758901736] [2022-12-13 13:24:01,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:24:01,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:24:01,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:24:02,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 13:24:02,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:24:02,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 13:24:02,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:24:02,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-12-13 13:24:02,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:24:02,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-12-13 13:24:02,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:24:02,187 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-13 13:24:02,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:24:02,187 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [758901736] [2022-12-13 13:24:02,187 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [758901736] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 13:24:02,188 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1231580784] [2022-12-13 13:24:02,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:24:02,188 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:24:02,188 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66ec0eea-c455-4a3d-a9f3-0a59155c6798/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:24:02,189 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66ec0eea-c455-4a3d-a9f3-0a59155c6798/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 13:24:02,190 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66ec0eea-c455-4a3d-a9f3-0a59155c6798/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 13:24:02,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:24:02,246 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 19 conjunts are in the unsatisfiable core [2022-12-13 13:24:02,251 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 13:24:02,388 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-13 13:24:02,388 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 13:24:02,388 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1231580784] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:24:02,388 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 13:24:02,389 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 12 [2022-12-13 13:24:02,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593645534] [2022-12-13 13:24:02,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:24:02,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 13:24:02,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:24:02,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 13:24:02,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2022-12-13 13:24:02,391 INFO L87 Difference]: Start difference. First operand 47 states and 57 transitions. Second operand has 8 states, 8 states have (on average 2.5) internal successors, (20), 5 states have internal predecessors, (20), 3 states have call successors, (7), 4 states have call predecessors, (7), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-12-13 13:24:02,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:24:02,522 INFO L93 Difference]: Finished difference Result 58 states and 68 transitions. [2022-12-13 13:24:02,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 13:24:02,523 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.5) internal successors, (20), 5 states have internal predecessors, (20), 3 states have call successors, (7), 4 states have call predecessors, (7), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 37 [2022-12-13 13:24:02,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:24:02,524 INFO L225 Difference]: With dead ends: 58 [2022-12-13 13:24:02,524 INFO L226 Difference]: Without dead ends: 56 [2022-12-13 13:24:02,524 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2022-12-13 13:24:02,525 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 37 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 13:24:02,526 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 133 Invalid, 141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 13:24:02,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2022-12-13 13:24:02,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 34. [2022-12-13 13:24:02,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 22 states have (on average 1.1363636363636365) internal successors, (25), 23 states have internal predecessors, (25), 7 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-12-13 13:24:02,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 38 transitions. [2022-12-13 13:24:02,533 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 38 transitions. Word has length 37 [2022-12-13 13:24:02,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:24:02,533 INFO L495 AbstractCegarLoop]: Abstraction has 34 states and 38 transitions. [2022-12-13 13:24:02,534 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.5) internal successors, (20), 5 states have internal predecessors, (20), 3 states have call successors, (7), 4 states have call predecessors, (7), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-12-13 13:24:02,534 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 38 transitions. [2022-12-13 13:24:02,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-12-13 13:24:02,535 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:24:02,535 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:24:02,541 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66ec0eea-c455-4a3d-a9f3-0a59155c6798/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 13:24:02,735 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66ec0eea-c455-4a3d-a9f3-0a59155c6798/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2022-12-13 13:24:02,736 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:24:02,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:24:02,737 INFO L85 PathProgramCache]: Analyzing trace with hash 2013704482, now seen corresponding path program 1 times [2022-12-13 13:24:02,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:24:02,737 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93378827] [2022-12-13 13:24:02,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:24:02,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:24:02,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:24:02,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 13:24:02,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:24:02,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 13:24:02,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:24:02,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-12-13 13:24:02,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:24:02,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-12-13 13:24:02,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:24:02,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-12-13 13:24:02,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:24:02,940 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-13 13:24:02,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:24:02,940 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [93378827] [2022-12-13 13:24:02,941 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [93378827] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 13:24:02,941 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1303664413] [2022-12-13 13:24:02,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:24:02,941 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:24:02,941 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66ec0eea-c455-4a3d-a9f3-0a59155c6798/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:24:02,942 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66ec0eea-c455-4a3d-a9f3-0a59155c6798/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 13:24:02,943 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66ec0eea-c455-4a3d-a9f3-0a59155c6798/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-13 13:24:02,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:24:02,995 INFO L263 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 28 conjunts are in the unsatisfiable core [2022-12-13 13:24:02,998 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 13:24:03,062 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 6 [2022-12-13 13:24:03,281 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 23 [2022-12-13 13:24:03,370 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 13:24:03,370 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 13:24:07,461 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1303664413] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 13:24:07,461 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 13:24:07,462 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 14] total 20 [2022-12-13 13:24:07,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873277225] [2022-12-13 13:24:07,462 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 13:24:07,462 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-12-13 13:24:07,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:24:07,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-12-13 13:24:07,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=400, Unknown=0, NotChecked=0, Total=462 [2022-12-13 13:24:07,463 INFO L87 Difference]: Start difference. First operand 34 states and 38 transitions. Second operand has 20 states, 16 states have (on average 2.625) internal successors, (42), 16 states have internal predecessors, (42), 7 states have call successors, (13), 6 states have call predecessors, (13), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-12-13 13:24:07,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:24:07,746 INFO L93 Difference]: Finished difference Result 40 states and 43 transitions. [2022-12-13 13:24:07,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-12-13 13:24:07,746 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 16 states have (on average 2.625) internal successors, (42), 16 states have internal predecessors, (42), 7 states have call successors, (13), 6 states have call predecessors, (13), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 40 [2022-12-13 13:24:07,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:24:07,747 INFO L225 Difference]: With dead ends: 40 [2022-12-13 13:24:07,747 INFO L226 Difference]: Without dead ends: 0 [2022-12-13 13:24:07,748 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 41 SyntacticMatches, 5 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 159 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=123, Invalid=807, Unknown=0, NotChecked=0, Total=930 [2022-12-13 13:24:07,749 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 32 mSDsluCounter, 183 mSDsCounter, 0 mSdLazyCounter, 320 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 205 SdHoareTripleChecker+Invalid, 334 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 320 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-13 13:24:07,750 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 205 Invalid, 334 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 320 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-13 13:24:07,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-12-13 13:24:07,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-12-13 13:24:07,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:24:07,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-12-13 13:24:07,751 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 40 [2022-12-13 13:24:07,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:24:07,751 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-12-13 13:24:07,751 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 16 states have (on average 2.625) internal successors, (42), 16 states have internal predecessors, (42), 7 states have call successors, (13), 6 states have call predecessors, (13), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-12-13 13:24:07,751 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-12-13 13:24:07,751 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-12-13 13:24:07,753 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-12-13 13:24:07,759 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66ec0eea-c455-4a3d-a9f3-0a59155c6798/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-13 13:24:07,954 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66ec0eea-c455-4a3d-a9f3-0a59155c6798/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:24:07,956 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-12-13 13:24:08,209 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-12-13 13:24:08,210 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2022-12-13 13:24:08,210 INFO L899 garLoopResultBuilder]: For program point L-1-1(line -1) no Hoare annotation was computed. [2022-12-13 13:24:08,210 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-12-13 13:24:08,210 INFO L895 garLoopResultBuilder]: At program point L50(line 50) the Hoare annotation is: (let ((.cse0 ((as const (Array Int Int)) 0))) (and (= .cse0 (select |#memory_int| |ULTIMATE.start_main_~a~0#1.base|)) (<= |ULTIMATE.start_main_~ai~1#1| |ULTIMATE.start_main_~ax~1#1|) (= .cse0 (select |#memory_int| |ULTIMATE.start_main_#t~malloc14#1.base|)))) [2022-12-13 13:24:08,210 INFO L899 garLoopResultBuilder]: For program point L50-1(line 50) no Hoare annotation was computed. [2022-12-13 13:24:08,210 INFO L895 garLoopResultBuilder]: At program point L47(line 47) the Hoare annotation is: (let ((.cse0 ((as const (Array Int Int)) 0))) (and (= .cse0 (select |#memory_int| |ULTIMATE.start_main_~a~0#1.base|)) (<= 0 |ULTIMATE.start_main_~n~0#1|) (= .cse0 (select |#memory_int| |ULTIMATE.start_main_#t~malloc14#1.base|)))) [2022-12-13 13:24:08,210 INFO L899 garLoopResultBuilder]: For program point L47-1(line 47) no Hoare annotation was computed. [2022-12-13 13:24:08,211 INFO L895 garLoopResultBuilder]: At program point L45(line 45) the Hoare annotation is: (<= 0 |ULTIMATE.start_main_~n~0#1|) [2022-12-13 13:24:08,211 INFO L899 garLoopResultBuilder]: For program point L45-1(line 45) no Hoare annotation was computed. [2022-12-13 13:24:08,211 INFO L902 garLoopResultBuilder]: At program point L42(line 42) the Hoare annotation is: true [2022-12-13 13:24:08,211 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2022-12-13 13:24:08,211 INFO L899 garLoopResultBuilder]: For program point L42-1(line 42) no Hoare annotation was computed. [2022-12-13 13:24:08,211 INFO L902 garLoopResultBuilder]: At program point main_returnLabel#1(lines 40 54) the Hoare annotation is: true [2022-12-13 13:24:08,211 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 7 9) the Hoare annotation is: true [2022-12-13 13:24:08,211 INFO L899 garLoopResultBuilder]: For program point L8(line 8) no Hoare annotation was computed. [2022-12-13 13:24:08,211 INFO L899 garLoopResultBuilder]: For program point L8-2(lines 7 9) no Hoare annotation was computed. [2022-12-13 13:24:08,211 INFO L899 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(lines 7 9) no Hoare annotation was computed. [2022-12-13 13:24:08,212 INFO L899 garLoopResultBuilder]: For program point L29(line 29) no Hoare annotation was computed. [2022-12-13 13:24:08,212 INFO L899 garLoopResultBuilder]: For program point L26(lines 26 27) no Hoare annotation was computed. [2022-12-13 13:24:08,212 INFO L895 garLoopResultBuilder]: At program point L26-2(lines 26 27) the Hoare annotation is: (let ((.cse0 ((as const (Array Int Int)) 0))) (or (not (= .cse0 (select |#memory_int| |check_#in~a.base|))) (and (let ((.cse1 (<= (+ check_~y 1) check_~n))) (or (and .cse1 (<= 1 check_~x)) (and (= check_~x 0) (= |check_#in~x| 0) .cse1))) (= .cse0 (select |#memory_int| check_~a.base))) (not (<= (+ |check_#in~y| 1) |check_#in~n|)) (not (<= 0 |check_#in~x|)))) [2022-12-13 13:24:08,212 INFO L899 garLoopResultBuilder]: For program point L21(line 21) no Hoare annotation was computed. [2022-12-13 13:24:08,212 INFO L895 garLoopResultBuilder]: At program point L20(line 20) the Hoare annotation is: (let ((.cse0 ((as const (Array Int Int)) 0))) (or (not (= .cse0 (select |#memory_int| |check_#in~a.base|))) (and (let ((.cse1 (<= (+ check_~y 1) check_~n))) (or (and (<= 1 |check_#in~x|) .cse1 (<= 1 check_~x)) (and (= check_~x 0) (= |check_#in~x| 0) .cse1))) (= .cse0 (select |#memory_int| check_~a.base))) (not (<= (+ |check_#in~y| 1) |check_#in~n|)) (not (<= 0 |check_#in~x|)))) [2022-12-13 13:24:08,212 INFO L895 garLoopResultBuilder]: At program point L20-1(line 20) the Hoare annotation is: (let ((.cse0 ((as const (Array Int Int)) 0))) (or (not (= .cse0 (select |#memory_int| |check_#in~a.base|))) (and (let ((.cse1 (<= (+ check_~y 1) check_~n))) (or (and (<= 1 |check_#in~x|) .cse1 (<= 1 check_~x)) (and (= check_~x 0) (= |check_#in~x| 0) .cse1))) (= .cse0 (select |#memory_int| check_~a.base))) (not (<= (+ |check_#in~y| 1) |check_#in~n|)) (not (<= 0 |check_#in~x|)))) [2022-12-13 13:24:08,212 INFO L899 garLoopResultBuilder]: For program point checkEXIT(lines 16 38) no Hoare annotation was computed. [2022-12-13 13:24:08,213 INFO L899 garLoopResultBuilder]: For program point L17(line 17) no Hoare annotation was computed. [2022-12-13 13:24:08,213 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 16 38) the Hoare annotation is: true [2022-12-13 13:24:08,213 INFO L899 garLoopResultBuilder]: For program point checkFINAL(lines 16 38) no Hoare annotation was computed. [2022-12-13 13:24:08,213 INFO L895 garLoopResultBuilder]: At program point L35(line 35) the Hoare annotation is: (let ((.cse0 ((as const (Array Int Int)) 0))) (or (not (= .cse0 (select |#memory_int| |check_#in~a.base|))) (not (<= (+ |check_#in~y| 1) |check_#in~n|)) (and (= check_~ai~0 0) (let ((.cse1 (<= (+ check_~y 1) check_~n))) (or (and .cse1 (<= 1 check_~x)) (and (<= 0 check_~x) (= |check_#in~x| 0) .cse1))) (= .cse0 (select |#memory_int| check_~a.base)) (= check_~ax~0 0)) (not (<= 0 |check_#in~x|)))) [2022-12-13 13:24:08,213 INFO L899 garLoopResultBuilder]: For program point L35-1(line 35) no Hoare annotation was computed. [2022-12-13 13:24:08,213 INFO L899 garLoopResultBuilder]: For program point L11(line 11) no Hoare annotation was computed. [2022-12-13 13:24:08,213 INFO L899 garLoopResultBuilder]: For program point L11-1(line 11) no Hoare annotation was computed. [2022-12-13 13:24:08,213 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 10 12) no Hoare annotation was computed. [2022-12-13 13:24:08,213 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 10 12) the Hoare annotation is: true [2022-12-13 13:24:08,214 INFO L899 garLoopResultBuilder]: For program point L11-3(lines 10 12) no Hoare annotation was computed. [2022-12-13 13:24:08,214 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 11) no Hoare annotation was computed. [2022-12-13 13:24:08,216 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2022-12-13 13:24:08,218 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-13 13:24:08,223 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.12 01:24:08 BoogieIcfgContainer [2022-12-13 13:24:08,224 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-13 13:24:08,224 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-13 13:24:08,224 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-13 13:24:08,224 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-13 13:24:08,225 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 01:24:01" (3/4) ... [2022-12-13 13:24:08,227 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-12-13 13:24:08,231 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2022-12-13 13:24:08,231 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure check [2022-12-13 13:24:08,232 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2022-12-13 13:24:08,234 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2022-12-13 13:24:08,235 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2022-12-13 13:24:08,235 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2022-12-13 13:24:08,235 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-12-13 13:24:08,258 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66ec0eea-c455-4a3d-a9f3-0a59155c6798/bin/uautomizer-uyxdKDjOR8/witness.graphml [2022-12-13 13:24:08,258 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-13 13:24:08,258 INFO L158 Benchmark]: Toolchain (without parser) took 7646.79ms. Allocated memory is still 136.3MB. Free memory was 101.1MB in the beginning and 93.7MB in the end (delta: 7.4MB). Peak memory consumption was 8.9MB. Max. memory is 16.1GB. [2022-12-13 13:24:08,258 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 136.3MB. Free memory is still 107.9MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 13:24:08,259 INFO L158 Benchmark]: CACSL2BoogieTranslator took 154.58ms. Allocated memory is still 136.3MB. Free memory was 100.7MB in the beginning and 90.4MB in the end (delta: 10.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-12-13 13:24:08,259 INFO L158 Benchmark]: Boogie Procedure Inliner took 21.44ms. Allocated memory is still 136.3MB. Free memory was 90.0MB in the beginning and 88.8MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 13:24:08,259 INFO L158 Benchmark]: Boogie Preprocessor took 15.42ms. Allocated memory is still 136.3MB. Free memory was 88.8MB in the beginning and 87.5MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 13:24:08,259 INFO L158 Benchmark]: RCFGBuilder took 224.23ms. Allocated memory is still 136.3MB. Free memory was 87.1MB in the beginning and 74.9MB in the end (delta: 12.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-12-13 13:24:08,259 INFO L158 Benchmark]: TraceAbstraction took 7192.63ms. Allocated memory is still 136.3MB. Free memory was 74.5MB in the beginning and 96.8MB in the end (delta: -22.4MB). Peak memory consumption was 38.8MB. Max. memory is 16.1GB. [2022-12-13 13:24:08,260 INFO L158 Benchmark]: Witness Printer took 33.74ms. Allocated memory is still 136.3MB. Free memory was 96.8MB in the beginning and 93.7MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 13:24:08,262 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 136.3MB. Free memory is still 107.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 154.58ms. Allocated memory is still 136.3MB. Free memory was 100.7MB in the beginning and 90.4MB in the end (delta: 10.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 21.44ms. Allocated memory is still 136.3MB. Free memory was 90.0MB in the beginning and 88.8MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 15.42ms. Allocated memory is still 136.3MB. Free memory was 88.8MB in the beginning and 87.5MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 224.23ms. Allocated memory is still 136.3MB. Free memory was 87.1MB in the beginning and 74.9MB in the end (delta: 12.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 7192.63ms. Allocated memory is still 136.3MB. Free memory was 74.5MB in the beginning and 96.8MB in the end (delta: -22.4MB). Peak memory consumption was 38.8MB. Max. memory is 16.1GB. * Witness Printer took 33.74ms. Allocated memory is still 136.3MB. Free memory was 96.8MB in the beginning and 93.7MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 11]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 36 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 7.1s, OverallIterations: 5, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.3s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 99 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 97 mSDsluCounter, 730 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 557 mSDsCounter, 59 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 533 IncrementalHoareTripleChecker+Invalid, 592 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 59 mSolverCounterUnsat, 173 mSDtfsCounter, 533 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 168 GetRequests, 106 SyntacticMatches, 5 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 177 ImplicationChecksByTransitivity, 4.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=49occurred in iteration=2, InterpolantAutomatonStates: 42, 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, 5 MinimizatonAttempts, 27 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 12 LocationsWithAnnotation, 36 PreInvPairs, 46 NumberOfFragments, 240 HoareAnnotationTreeSize, 36 FomulaSimplifications, 57 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 12 FomulaSimplificationsInter, 405 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 5.4s InterpolantComputationTime, 223 NumberOfCodeBlocks, 223 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 216 ConstructedInterpolants, 13 QuantifiedInterpolants, 678 SizeOfPredicates, 21 NumberOfNonLiveVariables, 351 ConjunctsInSsa, 47 ConjunctsInUnsatCore, 7 InterpolantComputations, 4 PerfectInterpolantSequences, 63/78 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 40]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2022-12-13 13:24:08,283 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66ec0eea-c455-4a3d-a9f3-0a59155c6798/bin/uautomizer-uyxdKDjOR8/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 Writing output log to file Ultimate.log Result: TRUE