./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-industry-pattern/array_single_elem_init.i --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_ca9f6c20-dee5-49fa-bd9d-83c3a2d5f737/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca9f6c20-dee5-49fa-bd9d-83c3a2d5f737/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_ca9f6c20-dee5-49fa-bd9d-83c3a2d5f737/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca9f6c20-dee5-49fa-bd9d-83c3a2d5f737/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-industry-pattern/array_single_elem_init.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca9f6c20-dee5-49fa-bd9d-83c3a2d5f737/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_ca9f6c20-dee5-49fa-bd9d-83c3a2d5f737/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 783ac259376d0d4b331b84c9ee3bd0ed2042af56d21e98db70a8bebb07aee3c2 --- 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 15:02:39,309 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 15:02:39,310 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 15:02:39,323 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 15:02:39,323 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 15:02:39,324 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 15:02:39,325 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 15:02:39,326 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 15:02:39,327 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 15:02:39,328 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 15:02:39,330 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 15:02:39,331 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 15:02:39,332 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 15:02:39,334 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 15:02:39,335 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 15:02:39,337 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 15:02:39,338 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 15:02:39,340 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 15:02:39,342 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 15:02:39,345 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 15:02:39,348 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 15:02:39,349 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 15:02:39,351 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 15:02:39,352 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 15:02:39,358 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 15:02:39,359 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 15:02:39,360 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 15:02:39,361 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 15:02:39,361 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 15:02:39,363 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 15:02:39,363 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 15:02:39,364 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 15:02:39,365 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 15:02:39,366 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 15:02:39,367 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 15:02:39,367 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 15:02:39,368 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 15:02:39,368 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 15:02:39,369 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 15:02:39,369 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 15:02:39,370 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 15:02:39,371 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca9f6c20-dee5-49fa-bd9d-83c3a2d5f737/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-12-13 15:02:39,390 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 15:02:39,390 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 15:02:39,391 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 15:02:39,391 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 15:02:39,392 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 15:02:39,392 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 15:02:39,392 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 15:02:39,392 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 15:02:39,393 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 15:02:39,393 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 15:02:39,393 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 15:02:39,393 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 15:02:39,393 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 15:02:39,394 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 15:02:39,394 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 15:02:39,394 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 15:02:39,394 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 15:02:39,394 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 15:02:39,394 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 15:02:39,395 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 15:02:39,395 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 15:02:39,395 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 15:02:39,395 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 15:02:39,395 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 15:02:39,395 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 15:02:39,396 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 15:02:39,396 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 15:02:39,396 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 15:02:39,396 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 15:02:39,396 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 15:02:39,396 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 15:02:39,397 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 15:02:39,397 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 15:02:39,397 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 15:02:39,397 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 15:02:39,397 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_ca9f6c20-dee5-49fa-bd9d-83c3a2d5f737/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca9f6c20-dee5-49fa-bd9d-83c3a2d5f737/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 783ac259376d0d4b331b84c9ee3bd0ed2042af56d21e98db70a8bebb07aee3c2 [2022-12-13 15:02:39,607 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 15:02:39,626 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 15:02:39,629 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 15:02:39,630 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 15:02:39,630 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 15:02:39,631 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca9f6c20-dee5-49fa-bd9d-83c3a2d5f737/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/array-industry-pattern/array_single_elem_init.i [2022-12-13 15:02:42,162 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 15:02:42,331 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 15:02:42,331 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca9f6c20-dee5-49fa-bd9d-83c3a2d5f737/sv-benchmarks/c/array-industry-pattern/array_single_elem_init.i [2022-12-13 15:02:42,335 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca9f6c20-dee5-49fa-bd9d-83c3a2d5f737/bin/uautomizer-uyxdKDjOR8/data/347e947a0/0ed0822be047414883a42724d4560599/FLAGcc37099a8 [2022-12-13 15:02:42,722 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca9f6c20-dee5-49fa-bd9d-83c3a2d5f737/bin/uautomizer-uyxdKDjOR8/data/347e947a0/0ed0822be047414883a42724d4560599 [2022-12-13 15:02:42,723 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 15:02:42,724 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 15:02:42,725 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 15:02:42,725 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 15:02:42,729 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 15:02:42,729 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 03:02:42" (1/1) ... [2022-12-13 15:02:42,730 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3037f2c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:02:42, skipping insertion in model container [2022-12-13 15:02:42,730 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 03:02:42" (1/1) ... [2022-12-13 15:02:42,736 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 15:02:42,749 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 15:02:42,861 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_ca9f6c20-dee5-49fa-bd9d-83c3a2d5f737/sv-benchmarks/c/array-industry-pattern/array_single_elem_init.i[815,828] [2022-12-13 15:02:42,876 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 15:02:42,882 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 15:02:42,890 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_ca9f6c20-dee5-49fa-bd9d-83c3a2d5f737/sv-benchmarks/c/array-industry-pattern/array_single_elem_init.i[815,828] [2022-12-13 15:02:42,895 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 15:02:42,905 INFO L208 MainTranslator]: Completed translation [2022-12-13 15:02:42,905 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:02:42 WrapperNode [2022-12-13 15:02:42,906 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 15:02:42,907 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 15:02:42,907 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 15:02:42,907 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 15:02:42,913 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:02:42" (1/1) ... [2022-12-13 15:02:42,920 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:02:42" (1/1) ... [2022-12-13 15:02:42,932 INFO L138 Inliner]: procedures = 16, calls = 25, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 70 [2022-12-13 15:02:42,932 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 15:02:42,933 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 15:02:42,933 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 15:02:42,933 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 15:02:42,946 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:02:42" (1/1) ... [2022-12-13 15:02:42,948 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:02:42" (1/1) ... [2022-12-13 15:02:42,951 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:02:42" (1/1) ... [2022-12-13 15:02:42,951 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:02:42" (1/1) ... [2022-12-13 15:02:42,956 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:02:42" (1/1) ... [2022-12-13 15:02:42,959 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:02:42" (1/1) ... [2022-12-13 15:02:42,960 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:02:42" (1/1) ... [2022-12-13 15:02:42,961 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:02:42" (1/1) ... [2022-12-13 15:02:42,967 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 15:02:42,968 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 15:02:42,968 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 15:02:42,968 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 15:02:42,969 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:02:42" (1/1) ... [2022-12-13 15:02:42,975 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 15:02:42,985 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca9f6c20-dee5-49fa-bd9d-83c3a2d5f737/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:02:42,996 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca9f6c20-dee5-49fa-bd9d-83c3a2d5f737/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 15:02:42,997 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca9f6c20-dee5-49fa-bd9d-83c3a2d5f737/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 15:02:43,031 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 15:02:43,031 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 15:02:43,031 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 15:02:43,031 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 15:02:43,032 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 15:02:43,032 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 15:02:43,032 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-13 15:02:43,032 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 15:02:43,094 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 15:02:43,096 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 15:02:43,208 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 15:02:43,213 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 15:02:43,214 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-12-13 15:02:43,215 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 03:02:43 BoogieIcfgContainer [2022-12-13 15:02:43,215 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 15:02:43,217 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 15:02:43,218 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 15:02:43,221 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 15:02:43,221 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 03:02:42" (1/3) ... [2022-12-13 15:02:43,221 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22f2bb03 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 03:02:43, skipping insertion in model container [2022-12-13 15:02:43,222 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:02:42" (2/3) ... [2022-12-13 15:02:43,222 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22f2bb03 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 03:02:43, skipping insertion in model container [2022-12-13 15:02:43,222 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 03:02:43" (3/3) ... [2022-12-13 15:02:43,223 INFO L112 eAbstractionObserver]: Analyzing ICFG array_single_elem_init.i [2022-12-13 15:02:43,242 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 15:02:43,243 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-13 15:02:43,280 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 15:02:43,285 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;@5954c708, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 15:02:43,285 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-13 15:02:43,289 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 19 states have internal predecessors, (28), 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 15:02:43,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-12-13 15:02:43,293 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:02:43,293 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:02:43,294 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:02:43,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:02:43,298 INFO L85 PathProgramCache]: Analyzing trace with hash 916381450, now seen corresponding path program 1 times [2022-12-13 15:02:43,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:02:43,305 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12395961] [2022-12-13 15:02:43,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:02:43,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:02:43,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:02:43,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:02:43,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:02:43,431 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12395961] [2022-12-13 15:02:43,431 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [12395961] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:02:43,432 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:02:43,432 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 15:02:43,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522947224] [2022-12-13 15:02:43,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:02:43,437 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-13 15:02:43,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:02:43,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-13 15:02:43,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-13 15:02:43,460 INFO L87 Difference]: Start difference. First operand has 20 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 19 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:02:43,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:02:43,471 INFO L93 Difference]: Finished difference Result 32 states and 43 transitions. [2022-12-13 15:02:43,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-13 15:02:43,472 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-12-13 15:02:43,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:02:43,477 INFO L225 Difference]: With dead ends: 32 [2022-12-13 15:02:43,477 INFO L226 Difference]: Without dead ends: 16 [2022-12-13 15:02:43,479 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 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 15:02:43,481 INFO L413 NwaCegarLoop]: 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 [2022-12-13 15:02:43,482 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 15:02:43,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2022-12-13 15:02:43,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2022-12-13 15:02:43,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 15 states have (on average 1.4) internal successors, (21), 15 states have internal predecessors, (21), 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 15:02:43,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 21 transitions. [2022-12-13 15:02:43,502 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 21 transitions. Word has length 8 [2022-12-13 15:02:43,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:02:43,502 INFO L495 AbstractCegarLoop]: Abstraction has 16 states and 21 transitions. [2022-12-13 15:02:43,502 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:02:43,502 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 21 transitions. [2022-12-13 15:02:43,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-12-13 15:02:43,503 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:02:43,503 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:02:43,503 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 15:02:43,503 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:02:43,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:02:43,504 INFO L85 PathProgramCache]: Analyzing trace with hash 229281826, now seen corresponding path program 1 times [2022-12-13 15:02:43,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:02:43,504 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916369597] [2022-12-13 15:02:43,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:02:43,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:02:43,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:02:43,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:02:43,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:02:43,567 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916369597] [2022-12-13 15:02:43,567 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [916369597] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:02:43,567 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:02:43,567 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 15:02:43,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769989800] [2022-12-13 15:02:43,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:02:43,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 15:02:43,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:02:43,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 15:02:43,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 15:02:43,570 INFO L87 Difference]: Start difference. First operand 16 states and 21 transitions. Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:02:43,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:02:43,614 INFO L93 Difference]: Finished difference Result 33 states and 44 transitions. [2022-12-13 15:02:43,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 15:02:43,615 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-12-13 15:02:43,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:02:43,615 INFO L225 Difference]: With dead ends: 33 [2022-12-13 15:02:43,616 INFO L226 Difference]: Without dead ends: 25 [2022-12-13 15:02:43,616 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 15:02:43,617 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 10 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 15:02:43,617 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 18 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 15:02:43,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2022-12-13 15:02:43,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 19. [2022-12-13 15:02:43,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.3333333333333333) internal successors, (24), 18 states have internal predecessors, (24), 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 15:02:43,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 24 transitions. [2022-12-13 15:02:43,620 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 24 transitions. Word has length 8 [2022-12-13 15:02:43,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:02:43,621 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 24 transitions. [2022-12-13 15:02:43,621 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:02:43,621 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 24 transitions. [2022-12-13 15:02:43,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-12-13 15:02:43,622 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:02:43,622 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:02:43,622 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 15:02:43,622 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:02:43,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:02:43,623 INFO L85 PathProgramCache]: Analyzing trace with hash -528137142, now seen corresponding path program 1 times [2022-12-13 15:02:43,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:02:43,623 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2037545721] [2022-12-13 15:02:43,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:02:43,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:02:43,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:02:43,756 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 15:02:43,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:02:43,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2037545721] [2022-12-13 15:02:43,757 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2037545721] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 15:02:43,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1992120065] [2022-12-13 15:02:43,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:02:43,757 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:02:43,758 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca9f6c20-dee5-49fa-bd9d-83c3a2d5f737/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:02:43,759 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca9f6c20-dee5-49fa-bd9d-83c3a2d5f737/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 15:02:43,760 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca9f6c20-dee5-49fa-bd9d-83c3a2d5f737/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 15:02:43,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:02:43,826 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 15:02:43,829 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 15:02:43,866 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 15:02:43,866 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 15:02:43,892 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 15:02:43,892 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1992120065] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 15:02:43,893 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 15:02:43,893 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2022-12-13 15:02:43,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384081606] [2022-12-13 15:02:43,893 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 15:02:43,894 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 15:02:43,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:02:43,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 15:02:43,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-12-13 15:02:43,895 INFO L87 Difference]: Start difference. First operand 19 states and 24 transitions. Second operand has 7 states, 7 states have (on average 4.0) internal successors, (28), 7 states have internal predecessors, (28), 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 15:02:43,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:02:43,977 INFO L93 Difference]: Finished difference Result 55 states and 75 transitions. [2022-12-13 15:02:43,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 15:02:43,978 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.0) internal successors, (28), 7 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-12-13 15:02:43,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:02:43,979 INFO L225 Difference]: With dead ends: 55 [2022-12-13 15:02:43,979 INFO L226 Difference]: Without dead ends: 45 [2022-12-13 15:02:43,980 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-12-13 15:02:43,980 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 43 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 15:02:43,981 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 29 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 15:02:43,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2022-12-13 15:02:43,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 40. [2022-12-13 15:02:43,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 39 states have (on average 1.3846153846153846) internal successors, (54), 39 states have internal predecessors, (54), 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 15:02:43,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 54 transitions. [2022-12-13 15:02:43,985 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 54 transitions. Word has length 16 [2022-12-13 15:02:43,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:02:43,986 INFO L495 AbstractCegarLoop]: Abstraction has 40 states and 54 transitions. [2022-12-13 15:02:43,986 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.0) internal successors, (28), 7 states have internal predecessors, (28), 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 15:02:43,986 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 54 transitions. [2022-12-13 15:02:43,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-12-13 15:02:43,987 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:02:43,987 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:02:43,993 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca9f6c20-dee5-49fa-bd9d-83c3a2d5f737/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 15:02:44,187 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca9f6c20-dee5-49fa-bd9d-83c3a2d5f737/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-12-13 15:02:44,188 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:02:44,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:02:44,189 INFO L85 PathProgramCache]: Analyzing trace with hash 310337378, now seen corresponding path program 2 times [2022-12-13 15:02:44,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:02:44,190 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174353368] [2022-12-13 15:02:44,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:02:44,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:02:44,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:02:44,435 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-12-13 15:02:44,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:02:44,435 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174353368] [2022-12-13 15:02:44,435 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1174353368] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 15:02:44,436 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [690448775] [2022-12-13 15:02:44,436 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 15:02:44,436 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:02:44,436 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca9f6c20-dee5-49fa-bd9d-83c3a2d5f737/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:02:44,437 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca9f6c20-dee5-49fa-bd9d-83c3a2d5f737/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 15:02:44,438 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca9f6c20-dee5-49fa-bd9d-83c3a2d5f737/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-13 15:02:44,513 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 15:02:44,514 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 15:02:44,515 INFO L263 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-13 15:02:44,518 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 15:02:44,565 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-12-13 15:02:44,565 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 15:02:44,631 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-12-13 15:02:44,632 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [690448775] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 15:02:44,632 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 15:02:44,632 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7, 7] total 13 [2022-12-13 15:02:44,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649594528] [2022-12-13 15:02:44,632 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 15:02:44,633 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-12-13 15:02:44,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:02:44,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-12-13 15:02:44,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2022-12-13 15:02:44,635 INFO L87 Difference]: Start difference. First operand 40 states and 54 transitions. Second operand has 13 states, 13 states have (on average 5.230769230769231) internal successors, (68), 13 states have internal predecessors, (68), 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 15:02:44,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:02:44,775 INFO L93 Difference]: Finished difference Result 112 states and 158 transitions. [2022-12-13 15:02:44,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-13 15:02:44,776 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.230769230769231) internal successors, (68), 13 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2022-12-13 15:02:44,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:02:44,778 INFO L225 Difference]: With dead ends: 112 [2022-12-13 15:02:44,779 INFO L226 Difference]: Without dead ends: 99 [2022-12-13 15:02:44,780 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2022-12-13 15:02:44,781 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 162 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 162 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 15:02:44,781 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [162 Valid, 46 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 15:02:44,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2022-12-13 15:02:44,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 85. [2022-12-13 15:02:44,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 84 states have (on average 1.3928571428571428) internal successors, (117), 84 states have internal predecessors, (117), 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 15:02:44,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 117 transitions. [2022-12-13 15:02:44,794 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 117 transitions. Word has length 34 [2022-12-13 15:02:44,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:02:44,794 INFO L495 AbstractCegarLoop]: Abstraction has 85 states and 117 transitions. [2022-12-13 15:02:44,794 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.230769230769231) internal successors, (68), 13 states have internal predecessors, (68), 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 15:02:44,795 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 117 transitions. [2022-12-13 15:02:44,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-12-13 15:02:44,798 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:02:44,798 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 6, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:02:44,803 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca9f6c20-dee5-49fa-bd9d-83c3a2d5f737/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-13 15:02:44,998 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca9f6c20-dee5-49fa-bd9d-83c3a2d5f737/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:02:44,999 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:02:45,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:02:45,000 INFO L85 PathProgramCache]: Analyzing trace with hash -708297260, now seen corresponding path program 3 times [2022-12-13 15:02:45,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:02:45,001 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413944857] [2022-12-13 15:02:45,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:02:45,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:02:45,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:02:45,404 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2022-12-13 15:02:45,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:02:45,404 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413944857] [2022-12-13 15:02:45,404 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [413944857] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 15:02:45,404 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [622280722] [2022-12-13 15:02:45,405 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 15:02:45,405 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:02:45,405 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca9f6c20-dee5-49fa-bd9d-83c3a2d5f737/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:02:45,406 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca9f6c20-dee5-49fa-bd9d-83c3a2d5f737/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 15:02:45,407 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca9f6c20-dee5-49fa-bd9d-83c3a2d5f737/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-13 15:02:45,479 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-12-13 15:02:45,479 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 15:02:45,480 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 14 conjunts are in the unsatisfiable core [2022-12-13 15:02:45,483 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 15:02:45,512 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 10 treesize of output 8 [2022-12-13 15:02:45,580 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 18 [2022-12-13 15:02:45,584 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-12-13 15:02:45,601 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 23 treesize of output 7 [2022-12-13 15:02:45,610 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 19 proven. 18 refuted. 0 times theorem prover too weak. 238 trivial. 0 not checked. [2022-12-13 15:02:45,610 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 15:02:45,637 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 15:02:45,637 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 28 [2022-12-13 15:02:45,640 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 45 treesize of output 29 [2022-12-13 15:02:45,697 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 19 proven. 18 refuted. 0 times theorem prover too weak. 238 trivial. 0 not checked. [2022-12-13 15:02:45,697 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [622280722] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 15:02:45,698 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 15:02:45,698 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5, 5] total 13 [2022-12-13 15:02:45,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866849838] [2022-12-13 15:02:45,698 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 15:02:45,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-12-13 15:02:45,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:02:45,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-12-13 15:02:45,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2022-12-13 15:02:45,700 INFO L87 Difference]: Start difference. First operand 85 states and 117 transitions. Second operand has 13 states, 13 states have (on average 3.6153846153846154) internal successors, (47), 13 states have internal predecessors, (47), 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 15:02:46,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:02:46,034 INFO L93 Difference]: Finished difference Result 207 states and 289 transitions. [2022-12-13 15:02:46,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-12-13 15:02:46,035 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.6153846153846154) internal successors, (47), 13 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2022-12-13 15:02:46,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:02:46,036 INFO L225 Difference]: With dead ends: 207 [2022-12-13 15:02:46,036 INFO L226 Difference]: Without dead ends: 129 [2022-12-13 15:02:46,037 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 248 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=332, Invalid=724, Unknown=0, NotChecked=0, Total=1056 [2022-12-13 15:02:46,037 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 226 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 226 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 15:02:46,037 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [226 Valid, 55 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 15:02:46,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2022-12-13 15:02:46,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 108. [2022-12-13 15:02:46,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 107 states have (on average 1.308411214953271) internal successors, (140), 107 states have internal predecessors, (140), 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 15:02:46,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 140 transitions. [2022-12-13 15:02:46,045 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 140 transitions. Word has length 73 [2022-12-13 15:02:46,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:02:46,045 INFO L495 AbstractCegarLoop]: Abstraction has 108 states and 140 transitions. [2022-12-13 15:02:46,046 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.6153846153846154) internal successors, (47), 13 states have internal predecessors, (47), 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 15:02:46,046 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 140 transitions. [2022-12-13 15:02:46,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-12-13 15:02:46,046 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:02:46,047 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 7, 6, 6, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:02:46,051 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca9f6c20-dee5-49fa-bd9d-83c3a2d5f737/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-13 15:02:46,247 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca9f6c20-dee5-49fa-bd9d-83c3a2d5f737/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:02:46,248 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:02:46,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:02:46,249 INFO L85 PathProgramCache]: Analyzing trace with hash -422151838, now seen corresponding path program 1 times [2022-12-13 15:02:46,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:02:46,249 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612007721] [2022-12-13 15:02:46,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:02:46,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:02:46,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:02:46,514 INFO L134 CoverageAnalysis]: Checked inductivity of 292 backedges. 0 proven. 235 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2022-12-13 15:02:46,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:02:46,515 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612007721] [2022-12-13 15:02:46,515 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [612007721] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 15:02:46,515 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [812391549] [2022-12-13 15:02:46,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:02:46,515 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:02:46,515 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca9f6c20-dee5-49fa-bd9d-83c3a2d5f737/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:02:46,516 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca9f6c20-dee5-49fa-bd9d-83c3a2d5f737/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 15:02:46,517 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca9f6c20-dee5-49fa-bd9d-83c3a2d5f737/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-13 15:02:46,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:02:46,594 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 12 conjunts are in the unsatisfiable core [2022-12-13 15:02:46,597 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 15:02:46,659 INFO L134 CoverageAnalysis]: Checked inductivity of 292 backedges. 0 proven. 235 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2022-12-13 15:02:46,660 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 15:02:46,838 INFO L134 CoverageAnalysis]: Checked inductivity of 292 backedges. 0 proven. 235 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2022-12-13 15:02:46,838 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [812391549] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 15:02:46,838 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 15:02:46,838 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 25 [2022-12-13 15:02:46,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836006047] [2022-12-13 15:02:46,838 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 15:02:46,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-12-13 15:02:46,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:02:46,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-12-13 15:02:46,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2022-12-13 15:02:46,841 INFO L87 Difference]: Start difference. First operand 108 states and 140 transitions. Second operand has 25 states, 25 states have (on average 4.72) internal successors, (118), 25 states have internal predecessors, (118), 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 15:02:47,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:02:47,109 INFO L93 Difference]: Finished difference Result 276 states and 372 transitions. [2022-12-13 15:02:47,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-12-13 15:02:47,109 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 4.72) internal successors, (118), 25 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2022-12-13 15:02:47,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:02:47,111 INFO L225 Difference]: With dead ends: 276 [2022-12-13 15:02:47,111 INFO L226 Difference]: Without dead ends: 251 [2022-12-13 15:02:47,112 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2022-12-13 15:02:47,112 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 289 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 234 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 289 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 306 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 234 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-13 15:02:47,113 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [289 Valid, 78 Invalid, 306 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 234 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-13 15:02:47,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2022-12-13 15:02:47,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 219. [2022-12-13 15:02:47,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 218 states have (on average 1.31651376146789) internal successors, (287), 218 states have internal predecessors, (287), 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 15:02:47,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 287 transitions. [2022-12-13 15:02:47,127 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 287 transitions. Word has length 76 [2022-12-13 15:02:47,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:02:47,128 INFO L495 AbstractCegarLoop]: Abstraction has 219 states and 287 transitions. [2022-12-13 15:02:47,128 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 4.72) internal successors, (118), 25 states have internal predecessors, (118), 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 15:02:47,128 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 287 transitions. [2022-12-13 15:02:47,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2022-12-13 15:02:47,130 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:02:47,130 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 22, 22, 12, 11, 11, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:02:47,136 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca9f6c20-dee5-49fa-bd9d-83c3a2d5f737/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-13 15:02:47,331 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca9f6c20-dee5-49fa-bd9d-83c3a2d5f737/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-12-13 15:02:47,332 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:02:47,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:02:47,334 INFO L85 PathProgramCache]: Analyzing trace with hash 5109204, now seen corresponding path program 2 times [2022-12-13 15:02:47,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:02:47,334 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703217213] [2022-12-13 15:02:47,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:02:47,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:02:47,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:02:48,068 INFO L134 CoverageAnalysis]: Checked inductivity of 1364 backedges. 0 proven. 1177 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked. [2022-12-13 15:02:48,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:02:48,069 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1703217213] [2022-12-13 15:02:48,069 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1703217213] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 15:02:48,069 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1196900953] [2022-12-13 15:02:48,069 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 15:02:48,069 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:02:48,070 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca9f6c20-dee5-49fa-bd9d-83c3a2d5f737/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:02:48,070 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca9f6c20-dee5-49fa-bd9d-83c3a2d5f737/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 15:02:48,071 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca9f6c20-dee5-49fa-bd9d-83c3a2d5f737/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-13 15:02:48,178 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 15:02:48,178 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 15:02:48,181 INFO L263 TraceCheckSpWp]: Trace formula consists of 476 conjuncts, 24 conjunts are in the unsatisfiable core [2022-12-13 15:02:48,185 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 15:02:48,307 INFO L134 CoverageAnalysis]: Checked inductivity of 1364 backedges. 0 proven. 1177 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked. [2022-12-13 15:02:48,307 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 15:02:48,881 INFO L134 CoverageAnalysis]: Checked inductivity of 1364 backedges. 0 proven. 1177 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked. [2022-12-13 15:02:48,882 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1196900953] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 15:02:48,882 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 15:02:48,882 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 49 [2022-12-13 15:02:48,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353231633] [2022-12-13 15:02:48,882 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 15:02:48,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2022-12-13 15:02:48,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:02:48,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2022-12-13 15:02:48,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2022-12-13 15:02:48,884 INFO L87 Difference]: Start difference. First operand 219 states and 287 transitions. Second operand has 49 states, 49 states have (on average 4.857142857142857) internal successors, (238), 49 states have internal predecessors, (238), 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 15:02:49,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:02:49,566 INFO L93 Difference]: Finished difference Result 555 states and 754 transitions. [2022-12-13 15:02:49,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-12-13 15:02:49,566 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 4.857142857142857) internal successors, (238), 49 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 151 [2022-12-13 15:02:49,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:02:49,568 INFO L225 Difference]: With dead ends: 555 [2022-12-13 15:02:49,568 INFO L226 Difference]: Without dead ends: 515 [2022-12-13 15:02:49,569 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 325 GetRequests, 278 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2022-12-13 15:02:49,569 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 841 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 475 mSolverCounterSat, 248 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 841 SdHoareTripleChecker+Valid, 127 SdHoareTripleChecker+Invalid, 723 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 248 IncrementalHoareTripleChecker+Valid, 475 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-12-13 15:02:49,569 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [841 Valid, 127 Invalid, 723 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [248 Valid, 475 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-12-13 15:02:49,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 515 states. [2022-12-13 15:02:49,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 515 to 447. [2022-12-13 15:02:49,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 447 states, 446 states have (on average 1.3161434977578474) internal successors, (587), 446 states have internal predecessors, (587), 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 15:02:49,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 447 states to 447 states and 587 transitions. [2022-12-13 15:02:49,591 INFO L78 Accepts]: Start accepts. Automaton has 447 states and 587 transitions. Word has length 151 [2022-12-13 15:02:49,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:02:49,591 INFO L495 AbstractCegarLoop]: Abstraction has 447 states and 587 transitions. [2022-12-13 15:02:49,592 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 4.857142857142857) internal successors, (238), 49 states have internal predecessors, (238), 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 15:02:49,592 INFO L276 IsEmpty]: Start isEmpty. Operand 447 states and 587 transitions. [2022-12-13 15:02:49,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 308 [2022-12-13 15:02:49,598 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:02:49,598 INFO L195 NwaCegarLoop]: trace histogram [46, 46, 46, 46, 46, 24, 23, 23, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:02:49,603 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca9f6c20-dee5-49fa-bd9d-83c3a2d5f737/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-13 15:02:49,798 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca9f6c20-dee5-49fa-bd9d-83c3a2d5f737/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:02:49,799 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:02:49,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:02:49,799 INFO L85 PathProgramCache]: Analyzing trace with hash 749201748, now seen corresponding path program 3 times [2022-12-13 15:02:49,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:02:49,799 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940674733] [2022-12-13 15:02:49,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:02:49,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:02:49,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:02:51,627 INFO L134 CoverageAnalysis]: Checked inductivity of 6026 backedges. 0 proven. 5221 refuted. 0 times theorem prover too weak. 805 trivial. 0 not checked. [2022-12-13 15:02:51,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:02:51,627 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [940674733] [2022-12-13 15:02:51,627 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [940674733] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 15:02:51,627 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [627219199] [2022-12-13 15:02:51,627 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 15:02:51,627 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:02:51,627 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca9f6c20-dee5-49fa-bd9d-83c3a2d5f737/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:02:51,628 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca9f6c20-dee5-49fa-bd9d-83c3a2d5f737/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 15:02:51,629 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca9f6c20-dee5-49fa-bd9d-83c3a2d5f737/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-13 15:02:53,628 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 24 check-sat command(s) [2022-12-13 15:02:53,629 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 15:02:53,634 INFO L263 TraceCheckSpWp]: Trace formula consists of 540 conjuncts, 25 conjunts are in the unsatisfiable core [2022-12-13 15:02:53,637 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 15:02:53,698 INFO L134 CoverageAnalysis]: Checked inductivity of 6026 backedges. 0 proven. 805 refuted. 0 times theorem prover too weak. 5221 trivial. 0 not checked. [2022-12-13 15:02:53,698 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 15:02:54,503 INFO L134 CoverageAnalysis]: Checked inductivity of 6026 backedges. 0 proven. 805 refuted. 0 times theorem prover too weak. 5221 trivial. 0 not checked. [2022-12-13 15:02:54,503 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [627219199] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 15:02:54,503 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 15:02:54,504 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 26, 26] total 74 [2022-12-13 15:02:54,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348062577] [2022-12-13 15:02:54,504 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 15:02:54,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 74 states [2022-12-13 15:02:54,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:02:54,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2022-12-13 15:02:54,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2701, Invalid=2701, Unknown=0, NotChecked=0, Total=5402 [2022-12-13 15:02:54,510 INFO L87 Difference]: Start difference. First operand 447 states and 587 transitions. Second operand has 74 states, 74 states have (on average 5.283783783783784) internal successors, (391), 74 states have internal predecessors, (391), 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 15:02:56,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:02:56,036 INFO L93 Difference]: Finished difference Result 875 states and 1167 transitions. [2022-12-13 15:02:56,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2022-12-13 15:02:56,036 INFO L78 Accepts]: Start accepts. Automaton has has 74 states, 74 states have (on average 5.283783783783784) internal successors, (391), 74 states have internal predecessors, (391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 307 [2022-12-13 15:02:56,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:02:56,038 INFO L225 Difference]: With dead ends: 875 [2022-12-13 15:02:56,038 INFO L226 Difference]: Without dead ends: 799 [2022-12-13 15:02:56,039 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 661 GetRequests, 589 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 138 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=2701, Invalid=2701, Unknown=0, NotChecked=0, Total=5402 [2022-12-13 15:02:56,040 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 1512 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 728 mSolverCounterSat, 175 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1512 SdHoareTripleChecker+Valid, 173 SdHoareTripleChecker+Invalid, 903 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 175 IncrementalHoareTripleChecker+Valid, 728 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-12-13 15:02:56,040 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1512 Valid, 173 Invalid, 903 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [175 Valid, 728 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-12-13 15:02:56,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 799 states. [2022-12-13 15:02:56,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 799 to 791. [2022-12-13 15:02:56,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 791 states, 790 states have (on average 1.2734177215189872) internal successors, (1006), 790 states have internal predecessors, (1006), 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 15:02:56,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 791 states to 791 states and 1006 transitions. [2022-12-13 15:02:56,069 INFO L78 Accepts]: Start accepts. Automaton has 791 states and 1006 transitions. Word has length 307 [2022-12-13 15:02:56,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:02:56,069 INFO L495 AbstractCegarLoop]: Abstraction has 791 states and 1006 transitions. [2022-12-13 15:02:56,070 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 74 states, 74 states have (on average 5.283783783783784) internal successors, (391), 74 states have internal predecessors, (391), 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 15:02:56,070 INFO L276 IsEmpty]: Start isEmpty. Operand 791 states and 1006 transitions. [2022-12-13 15:02:56,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 577 [2022-12-13 15:02:56,078 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:02:56,078 INFO L195 NwaCegarLoop]: trace histogram [72, 71, 71, 71, 71, 71, 71, 71, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:02:56,085 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca9f6c20-dee5-49fa-bd9d-83c3a2d5f737/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-12-13 15:02:56,278 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca9f6c20-dee5-49fa-bd9d-83c3a2d5f737/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:02:56,280 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:02:56,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:02:56,281 INFO L85 PathProgramCache]: Analyzing trace with hash 823095820, now seen corresponding path program 4 times [2022-12-13 15:02:56,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:02:56,282 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208293256] [2022-12-13 15:02:56,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:02:56,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:02:56,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:03:00,090 INFO L134 CoverageAnalysis]: Checked inductivity of 20093 backedges. 0 proven. 12496 refuted. 0 times theorem prover too weak. 7597 trivial. 0 not checked. [2022-12-13 15:03:00,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:03:00,090 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1208293256] [2022-12-13 15:03:00,090 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1208293256] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 15:03:00,090 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1893185132] [2022-12-13 15:03:00,090 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-13 15:03:00,091 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:03:00,091 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca9f6c20-dee5-49fa-bd9d-83c3a2d5f737/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:03:00,091 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca9f6c20-dee5-49fa-bd9d-83c3a2d5f737/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 15:03:00,092 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca9f6c20-dee5-49fa-bd9d-83c3a2d5f737/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-13 15:03:00,289 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-13 15:03:00,289 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 15:03:00,295 INFO L263 TraceCheckSpWp]: Trace formula consists of 1500 conjuncts, 73 conjunts are in the unsatisfiable core [2022-12-13 15:03:00,300 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 15:03:00,597 INFO L134 CoverageAnalysis]: Checked inductivity of 20093 backedges. 0 proven. 12496 refuted. 0 times theorem prover too weak. 7597 trivial. 0 not checked. [2022-12-13 15:03:00,597 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 15:03:04,957 INFO L134 CoverageAnalysis]: Checked inductivity of 20093 backedges. 0 proven. 12496 refuted. 0 times theorem prover too weak. 7597 trivial. 0 not checked. [2022-12-13 15:03:04,958 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1893185132] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 15:03:04,958 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 15:03:04,958 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [74, 74, 74] total 147 [2022-12-13 15:03:04,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728489784] [2022-12-13 15:03:04,958 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 15:03:04,960 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 147 states [2022-12-13 15:03:04,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:03:04,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 147 interpolants. [2022-12-13 15:03:04,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10731, Invalid=10731, Unknown=0, NotChecked=0, Total=21462 [2022-12-13 15:03:04,967 INFO L87 Difference]: Start difference. First operand 791 states and 1006 transitions. Second operand has 147 states, 147 states have (on average 4.9523809523809526) internal successors, (728), 147 states have internal predecessors, (728), 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 15:03:15,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:03:15,627 INFO L93 Difference]: Finished difference Result 1813 states and 2393 transitions. [2022-12-13 15:03:15,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 146 states. [2022-12-13 15:03:15,628 INFO L78 Accepts]: Start accepts. Automaton has has 147 states, 147 states have (on average 4.9523809523809526) internal successors, (728), 147 states have internal predecessors, (728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 576 [2022-12-13 15:03:15,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:03:15,633 INFO L225 Difference]: With dead ends: 1813 [2022-12-13 15:03:15,633 INFO L226 Difference]: Without dead ends: 1593 [2022-12-13 15:03:15,636 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1224 GetRequests, 1079 SyntacticMatches, 0 SemanticMatches, 145 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 284 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=10731, Invalid=10731, Unknown=0, NotChecked=0, Total=21462 [2022-12-13 15:03:15,636 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 4698 mSDsluCounter, 305 mSDsCounter, 0 mSdLazyCounter, 1461 mSolverCounterSat, 988 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4698 SdHoareTripleChecker+Valid, 315 SdHoareTripleChecker+Invalid, 2449 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 988 IncrementalHoareTripleChecker+Valid, 1461 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-12-13 15:03:15,637 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4698 Valid, 315 Invalid, 2449 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [988 Valid, 1461 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-12-13 15:03:15,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1593 states. [2022-12-13 15:03:15,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1593 to 1378. [2022-12-13 15:03:15,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1378 states, 1377 states have (on average 1.3159041394335511) internal successors, (1812), 1377 states have internal predecessors, (1812), 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 15:03:15,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1378 states to 1378 states and 1812 transitions. [2022-12-13 15:03:15,701 INFO L78 Accepts]: Start accepts. Automaton has 1378 states and 1812 transitions. Word has length 576 [2022-12-13 15:03:15,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:03:15,702 INFO L495 AbstractCegarLoop]: Abstraction has 1378 states and 1812 transitions. [2022-12-13 15:03:15,702 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 147 states, 147 states have (on average 4.9523809523809526) internal successors, (728), 147 states have internal predecessors, (728), 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 15:03:15,702 INFO L276 IsEmpty]: Start isEmpty. Operand 1378 states and 1812 transitions. [2022-12-13 15:03:15,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 945 [2022-12-13 15:03:15,710 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:03:15,711 INFO L195 NwaCegarLoop]: trace histogram [144, 144, 144, 144, 144, 73, 72, 72, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:03:15,718 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca9f6c20-dee5-49fa-bd9d-83c3a2d5f737/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-12-13 15:03:15,911 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca9f6c20-dee5-49fa-bd9d-83c3a2d5f737/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:03:15,911 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:03:15,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:03:15,912 INFO L85 PathProgramCache]: Analyzing trace with hash -361923806, now seen corresponding path program 5 times [2022-12-13 15:03:15,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:03:15,912 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416827679] [2022-12-13 15:03:15,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:03:15,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:03:16,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:03:31,619 INFO L134 CoverageAnalysis]: Checked inductivity of 59436 backedges. 0 proven. 51624 refuted. 0 times theorem prover too weak. 7812 trivial. 0 not checked. [2022-12-13 15:03:31,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:03:31,620 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416827679] [2022-12-13 15:03:31,620 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [416827679] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 15:03:31,620 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1112954994] [2022-12-13 15:03:31,620 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-12-13 15:03:31,620 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:03:31,620 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca9f6c20-dee5-49fa-bd9d-83c3a2d5f737/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:03:31,621 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca9f6c20-dee5-49fa-bd9d-83c3a2d5f737/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 15:03:31,622 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca9f6c20-dee5-49fa-bd9d-83c3a2d5f737/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process