./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test3-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version dbf71c69 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acb4b796-7e54-4b2c-9fe5-178b9a4b1dfb/bin/uautomizer-J5u9QxTXDZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acb4b796-7e54-4b2c-9fe5-178b9a4b1dfb/bin/uautomizer-J5u9QxTXDZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acb4b796-7e54-4b2c-9fe5-178b9a4b1dfb/bin/uautomizer-J5u9QxTXDZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acb4b796-7e54-4b2c-9fe5-178b9a4b1dfb/bin/uautomizer-J5u9QxTXDZ/config/AutomizerReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test3-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acb4b796-7e54-4b2c-9fe5-178b9a4b1dfb/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acb4b796-7e54-4b2c-9fe5-178b9a4b1dfb/bin/uautomizer-J5u9QxTXDZ --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 72a3b80a468e10df778a3b8ff41e4c2b1e0b82c1005f056b209a19315511b1a5 --- 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-dbf71c6-m [2022-10-17 10:24:12,056 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 10:24:12,058 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 10:24:12,108 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 10:24:12,109 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 10:24:12,114 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 10:24:12,117 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 10:24:12,122 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 10:24:12,124 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 10:24:12,132 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 10:24:12,134 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 10:24:12,137 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 10:24:12,137 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 10:24:12,140 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 10:24:12,143 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 10:24:12,145 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 10:24:12,147 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 10:24:12,148 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 10:24:12,150 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 10:24:12,163 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 10:24:12,165 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 10:24:12,166 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 10:24:12,170 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 10:24:12,171 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 10:24:12,176 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 10:24:12,176 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 10:24:12,177 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 10:24:12,178 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 10:24:12,179 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 10:24:12,180 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 10:24:12,180 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 10:24:12,182 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 10:24:12,183 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 10:24:12,185 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 10:24:12,186 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 10:24:12,186 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 10:24:12,187 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 10:24:12,187 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 10:24:12,187 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 10:24:12,188 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 10:24:12,189 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 10:24:12,189 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acb4b796-7e54-4b2c-9fe5-178b9a4b1dfb/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-10-17 10:24:12,232 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 10:24:12,233 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 10:24:12,233 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 10:24:12,234 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 10:24:12,234 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 10:24:12,234 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-17 10:24:12,235 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-17 10:24:12,235 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-17 10:24:12,235 INFO L138 SettingsManager]: * Use SBE=true [2022-10-17 10:24:12,236 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 10:24:12,237 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-17 10:24:12,237 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 10:24:12,237 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-17 10:24:12,237 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 10:24:12,237 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-17 10:24:12,238 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 10:24:12,238 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-17 10:24:12,238 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-17 10:24:12,238 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-17 10:24:12,238 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 10:24:12,239 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-17 10:24:12,239 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 10:24:12,239 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-17 10:24:12,239 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-17 10:24:12,239 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:24:12,240 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 10:24:12,240 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 10:24:12,240 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-17 10:24:12,240 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-17 10:24:12,241 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-17 10:24:12,241 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-10-17 10:24:12,241 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-10-17 10:24:12,241 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-17 10:24:12,241 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acb4b796-7e54-4b2c-9fe5-178b9a4b1dfb/bin/uautomizer-J5u9QxTXDZ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acb4b796-7e54-4b2c-9fe5-178b9a4b1dfb/bin/uautomizer-J5u9QxTXDZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 72a3b80a468e10df778a3b8ff41e4c2b1e0b82c1005f056b209a19315511b1a5 [2022-10-17 10:24:12,501 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 10:24:12,522 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 10:24:12,525 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 10:24:12,526 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 10:24:12,530 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 10:24:12,531 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acb4b796-7e54-4b2c-9fe5-178b9a4b1dfb/bin/uautomizer-J5u9QxTXDZ/../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test3-2.i [2022-10-17 10:24:12,608 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acb4b796-7e54-4b2c-9fe5-178b9a4b1dfb/bin/uautomizer-J5u9QxTXDZ/data/93b4f6a64/e1ca226632124943a995d20dc732d2ac/FLAGda7602e83 [2022-10-17 10:24:13,294 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 10:24:13,295 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acb4b796-7e54-4b2c-9fe5-178b9a4b1dfb/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test3-2.i [2022-10-17 10:24:13,334 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acb4b796-7e54-4b2c-9fe5-178b9a4b1dfb/bin/uautomizer-J5u9QxTXDZ/data/93b4f6a64/e1ca226632124943a995d20dc732d2ac/FLAGda7602e83 [2022-10-17 10:24:13,515 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acb4b796-7e54-4b2c-9fe5-178b9a4b1dfb/bin/uautomizer-J5u9QxTXDZ/data/93b4f6a64/e1ca226632124943a995d20dc732d2ac [2022-10-17 10:24:13,520 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 10:24:13,524 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 10:24:13,526 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 10:24:13,527 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 10:24:13,530 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 10:24:13,531 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:24:13" (1/1) ... [2022-10-17 10:24:13,533 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3453240f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:24:13, skipping insertion in model container [2022-10-17 10:24:13,534 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:24:13" (1/1) ... [2022-10-17 10:24:13,541 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 10:24:13,624 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 10:24:14,071 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acb4b796-7e54-4b2c-9fe5-178b9a4b1dfb/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test3-2.i[33021,33034] [2022-10-17 10:24:14,174 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acb4b796-7e54-4b2c-9fe5-178b9a4b1dfb/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test3-2.i[44590,44603] [2022-10-17 10:24:14,205 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:24:14,227 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 10:24:14,268 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acb4b796-7e54-4b2c-9fe5-178b9a4b1dfb/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test3-2.i[33021,33034] [2022-10-17 10:24:14,374 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acb4b796-7e54-4b2c-9fe5-178b9a4b1dfb/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test3-2.i[44590,44603] [2022-10-17 10:24:14,407 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:24:14,442 INFO L208 MainTranslator]: Completed translation [2022-10-17 10:24:14,443 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:24:14 WrapperNode [2022-10-17 10:24:14,443 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 10:24:14,444 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 10:24:14,444 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 10:24:14,444 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 10:24:14,452 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:24:14" (1/1) ... [2022-10-17 10:24:14,485 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:24:14" (1/1) ... [2022-10-17 10:24:14,593 INFO L138 Inliner]: procedures = 177, calls = 336, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1181 [2022-10-17 10:24:14,594 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 10:24:14,595 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 10:24:14,595 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 10:24:14,595 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 10:24:14,604 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:24:14" (1/1) ... [2022-10-17 10:24:14,604 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:24:14" (1/1) ... [2022-10-17 10:24:14,621 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:24:14" (1/1) ... [2022-10-17 10:24:14,622 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:24:14" (1/1) ... [2022-10-17 10:24:14,682 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:24:14" (1/1) ... [2022-10-17 10:24:14,698 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:24:14" (1/1) ... [2022-10-17 10:24:14,704 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:24:14" (1/1) ... [2022-10-17 10:24:14,711 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:24:14" (1/1) ... [2022-10-17 10:24:14,725 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 10:24:14,726 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 10:24:14,727 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 10:24:14,727 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 10:24:14,728 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:24:14" (1/1) ... [2022-10-17 10:24:14,734 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:24:14,747 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acb4b796-7e54-4b2c-9fe5-178b9a4b1dfb/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:24:14,759 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acb4b796-7e54-4b2c-9fe5-178b9a4b1dfb/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-17 10:24:14,777 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acb4b796-7e54-4b2c-9fe5-178b9a4b1dfb/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-17 10:24:14,814 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-10-17 10:24:14,815 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-10-17 10:24:14,815 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-10-17 10:24:14,815 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-17 10:24:14,817 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-10-17 10:24:14,817 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-10-17 10:24:14,817 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-10-17 10:24:14,818 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-17 10:24:14,818 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-10-17 10:24:14,818 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-10-17 10:24:14,818 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2022-10-17 10:24:14,818 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-10-17 10:24:14,818 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-17 10:24:14,818 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-17 10:24:14,819 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 10:24:14,819 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 10:24:15,176 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 10:24:15,179 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 10:24:16,869 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 10:24:16,878 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 10:24:16,879 INFO L300 CfgBuilder]: Removed 72 assume(true) statements. [2022-10-17 10:24:16,881 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:24:16 BoogieIcfgContainer [2022-10-17 10:24:16,881 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 10:24:16,884 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-17 10:24:16,884 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-17 10:24:16,887 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-17 10:24:16,888 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.10 10:24:13" (1/3) ... [2022-10-17 10:24:16,889 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50b7f46a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:24:16, skipping insertion in model container [2022-10-17 10:24:16,889 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:24:14" (2/3) ... [2022-10-17 10:24:16,889 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50b7f46a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:24:16, skipping insertion in model container [2022-10-17 10:24:16,889 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:24:16" (3/3) ... [2022-10-17 10:24:16,891 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_OAT_test3-2.i [2022-10-17 10:24:16,910 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-17 10:24:16,910 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-10-17 10:24:16,966 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 10:24:16,973 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;@4dd4028a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 10:24:16,973 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-10-17 10:24:16,979 INFO L276 IsEmpty]: Start isEmpty. Operand has 231 states, 218 states have (on average 1.6926605504587156) internal successors, (369), 225 states have internal predecessors, (369), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2022-10-17 10:24:16,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-10-17 10:24:16,986 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:24:16,987 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:24:16,987 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:24:16,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:24:16,993 INFO L85 PathProgramCache]: Analyzing trace with hash -858857507, now seen corresponding path program 1 times [2022-10-17 10:24:17,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:24:17,003 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [783704370] [2022-10-17 10:24:17,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:24:17,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:24:17,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:24:17,167 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:24:17,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:24:17,168 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [783704370] [2022-10-17 10:24:17,169 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [783704370] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:24:17,169 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:24:17,169 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-17 10:24:17,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125566935] [2022-10-17 10:24:17,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:24:17,176 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-10-17 10:24:17,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:24:17,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-10-17 10:24:17,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-10-17 10:24:17,206 INFO L87 Difference]: Start difference. First operand has 231 states, 218 states have (on average 1.6926605504587156) internal successors, (369), 225 states have internal predecessors, (369), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:24:17,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:24:17,254 INFO L93 Difference]: Finished difference Result 460 states and 773 transitions. [2022-10-17 10:24:17,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-17 10:24:17,256 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-10-17 10:24:17,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:24:17,267 INFO L225 Difference]: With dead ends: 460 [2022-10-17 10:24:17,268 INFO L226 Difference]: Without dead ends: 198 [2022-10-17 10:24:17,272 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 [2022-10-17 10:24:17,275 INFO L413 NwaCegarLoop]: 307 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, 307 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 [2022-10-17 10:24:17,276 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 307 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 10:24:17,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2022-10-17 10:24:17,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 198. [2022-10-17 10:24:17,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 186 states have (on average 1.3279569892473118) internal successors, (247), 192 states have internal predecessors, (247), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2022-10-17 10:24:17,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 263 transitions. [2022-10-17 10:24:17,330 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 263 transitions. Word has length 9 [2022-10-17 10:24:17,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:24:17,331 INFO L495 AbstractCegarLoop]: Abstraction has 198 states and 263 transitions. [2022-10-17 10:24:17,331 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:24:17,331 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 263 transitions. [2022-10-17 10:24:17,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-10-17 10:24:17,332 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:24:17,332 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:24:17,333 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-17 10:24:17,333 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:24:17,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:24:17,334 INFO L85 PathProgramCache]: Analyzing trace with hash -1459926514, now seen corresponding path program 1 times [2022-10-17 10:24:17,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:24:17,335 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980492125] [2022-10-17 10:24:17,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:24:17,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:24:17,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:24:17,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:24:17,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:24:17,597 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1980492125] [2022-10-17 10:24:17,598 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1980492125] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:24:17,598 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:24:17,598 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-17 10:24:17,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876902359] [2022-10-17 10:24:17,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:24:17,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-17 10:24:17,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:24:17,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-17 10:24:17,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-17 10:24:17,607 INFO L87 Difference]: Start difference. First operand 198 states and 263 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:24:18,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:24:18,147 INFO L93 Difference]: Finished difference Result 431 states and 581 transitions. [2022-10-17 10:24:18,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-17 10:24:18,149 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-10-17 10:24:18,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:24:18,156 INFO L225 Difference]: With dead ends: 431 [2022-10-17 10:24:18,157 INFO L226 Difference]: Without dead ends: 327 [2022-10-17 10:24:18,158 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-10-17 10:24:18,163 INFO L413 NwaCegarLoop]: 237 mSDtfsCounter, 158 mSDsluCounter, 416 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 653 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-10-17 10:24:18,164 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [163 Valid, 653 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-10-17 10:24:18,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2022-10-17 10:24:18,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 200. [2022-10-17 10:24:18,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 188 states have (on average 1.324468085106383) internal successors, (249), 194 states have internal predecessors, (249), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2022-10-17 10:24:18,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 265 transitions. [2022-10-17 10:24:18,217 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 265 transitions. Word has length 14 [2022-10-17 10:24:18,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:24:18,217 INFO L495 AbstractCegarLoop]: Abstraction has 200 states and 265 transitions. [2022-10-17 10:24:18,217 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:24:18,218 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 265 transitions. [2022-10-17 10:24:18,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-10-17 10:24:18,221 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:24:18,221 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:24:18,221 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-17 10:24:18,221 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:24:18,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:24:18,222 INFO L85 PathProgramCache]: Analyzing trace with hash -917613318, now seen corresponding path program 1 times [2022-10-17 10:24:18,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:24:18,223 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768160283] [2022-10-17 10:24:18,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:24:18,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:24:18,421 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-17 10:24:18,421 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [259455514] [2022-10-17 10:24:18,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:24:18,425 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:24:18,426 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acb4b796-7e54-4b2c-9fe5-178b9a4b1dfb/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:24:18,434 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acb4b796-7e54-4b2c-9fe5-178b9a4b1dfb/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:24:18,436 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acb4b796-7e54-4b2c-9fe5-178b9a4b1dfb/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-10-17 10:24:19,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:24:19,139 INFO L263 TraceCheckSpWp]: Trace formula consists of 1599 conjuncts, 3 conjunts are in the unsatisfiable core [2022-10-17 10:24:19,149 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:24:19,209 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:24:19,209 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:24:19,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:24:19,210 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768160283] [2022-10-17 10:24:19,210 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-17 10:24:19,210 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [259455514] [2022-10-17 10:24:19,210 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [259455514] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:24:19,211 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:24:19,211 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 10:24:19,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890555968] [2022-10-17 10:24:19,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:24:19,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:24:19,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:24:19,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:24:19,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:24:19,213 INFO L87 Difference]: Start difference. First operand 200 states and 265 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:24:19,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:24:19,290 INFO L93 Difference]: Finished difference Result 417 states and 557 transitions. [2022-10-17 10:24:19,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:24:19,291 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2022-10-17 10:24:19,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:24:19,293 INFO L225 Difference]: With dead ends: 417 [2022-10-17 10:24:19,293 INFO L226 Difference]: Without dead ends: 221 [2022-10-17 10:24:19,294 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:24:19,296 INFO L413 NwaCegarLoop]: 243 mSDtfsCounter, 9 mSDsluCounter, 228 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 471 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 10:24:19,296 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 471 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 10:24:19,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2022-10-17 10:24:19,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 220. [2022-10-17 10:24:19,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220 states, 208 states have (on average 1.2932692307692308) internal successors, (269), 214 states have internal predecessors, (269), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2022-10-17 10:24:19,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 285 transitions. [2022-10-17 10:24:19,311 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 285 transitions. Word has length 66 [2022-10-17 10:24:19,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:24:19,312 INFO L495 AbstractCegarLoop]: Abstraction has 220 states and 285 transitions. [2022-10-17 10:24:19,312 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:24:19,312 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 285 transitions. [2022-10-17 10:24:19,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-10-17 10:24:19,315 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:24:19,315 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:24:19,356 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acb4b796-7e54-4b2c-9fe5-178b9a4b1dfb/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-10-17 10:24:19,537 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acb4b796-7e54-4b2c-9fe5-178b9a4b1dfb/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:24:19,537 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:24:19,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:24:19,538 INFO L85 PathProgramCache]: Analyzing trace with hash -564524936, now seen corresponding path program 1 times [2022-10-17 10:24:19,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:24:19,538 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005305471] [2022-10-17 10:24:19,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:24:19,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:24:19,681 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-17 10:24:19,681 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1395036309] [2022-10-17 10:24:19,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:24:19,682 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:24:19,683 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acb4b796-7e54-4b2c-9fe5-178b9a4b1dfb/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:24:19,716 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acb4b796-7e54-4b2c-9fe5-178b9a4b1dfb/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:24:19,723 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acb4b796-7e54-4b2c-9fe5-178b9a4b1dfb/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-10-17 10:24:20,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:24:20,415 INFO L263 TraceCheckSpWp]: Trace formula consists of 1601 conjuncts, 3 conjunts are in the unsatisfiable core [2022-10-17 10:24:20,421 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:24:20,446 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:24:20,446 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:24:20,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:24:20,447 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1005305471] [2022-10-17 10:24:20,447 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-17 10:24:20,447 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1395036309] [2022-10-17 10:24:20,447 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1395036309] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:24:20,447 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:24:20,447 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-17 10:24:20,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661997363] [2022-10-17 10:24:20,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:24:20,448 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-17 10:24:20,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:24:20,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-17 10:24:20,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-17 10:24:20,449 INFO L87 Difference]: Start difference. First operand 220 states and 285 transitions. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:24:20,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:24:20,542 INFO L93 Difference]: Finished difference Result 428 states and 558 transitions. [2022-10-17 10:24:20,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-17 10:24:20,543 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2022-10-17 10:24:20,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:24:20,544 INFO L225 Difference]: With dead ends: 428 [2022-10-17 10:24:20,545 INFO L226 Difference]: Without dead ends: 212 [2022-10-17 10:24:20,546 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-10-17 10:24:20,548 INFO L413 NwaCegarLoop]: 243 mSDtfsCounter, 226 mSDsluCounter, 256 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 234 SdHoareTripleChecker+Valid, 499 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 10:24:20,551 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [234 Valid, 499 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 10:24:20,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2022-10-17 10:24:20,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 206. [2022-10-17 10:24:20,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206 states, 194 states have (on average 1.2783505154639174) internal successors, (248), 200 states have internal predecessors, (248), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2022-10-17 10:24:20,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 264 transitions. [2022-10-17 10:24:20,576 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 264 transitions. Word has length 66 [2022-10-17 10:24:20,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:24:20,576 INFO L495 AbstractCegarLoop]: Abstraction has 206 states and 264 transitions. [2022-10-17 10:24:20,577 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:24:20,577 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 264 transitions. [2022-10-17 10:24:20,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-10-17 10:24:20,585 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:24:20,585 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:24:20,612 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acb4b796-7e54-4b2c-9fe5-178b9a4b1dfb/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-10-17 10:24:20,794 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acb4b796-7e54-4b2c-9fe5-178b9a4b1dfb/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:24:20,797 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:24:20,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:24:20,797 INFO L85 PathProgramCache]: Analyzing trace with hash -1134939002, now seen corresponding path program 1 times [2022-10-17 10:24:20,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:24:20,797 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [126872797] [2022-10-17 10:24:20,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:24:20,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:24:20,954 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-17 10:24:20,958 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [650316816] [2022-10-17 10:24:20,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:24:20,959 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:24:20,959 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acb4b796-7e54-4b2c-9fe5-178b9a4b1dfb/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:24:20,962 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acb4b796-7e54-4b2c-9fe5-178b9a4b1dfb/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:24:20,987 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acb4b796-7e54-4b2c-9fe5-178b9a4b1dfb/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-10-17 10:24:21,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:24:21,868 INFO L263 TraceCheckSpWp]: Trace formula consists of 1587 conjuncts, 5 conjunts are in the unsatisfiable core [2022-10-17 10:24:21,873 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:24:22,050 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:24:22,050 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:24:22,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:24:22,051 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [126872797] [2022-10-17 10:24:22,051 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-17 10:24:22,051 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [650316816] [2022-10-17 10:24:22,051 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [650316816] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:24:22,051 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:24:22,051 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 10:24:22,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560977913] [2022-10-17 10:24:22,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:24:22,052 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:24:22,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:24:22,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:24:22,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:24:22,053 INFO L87 Difference]: Start difference. First operand 206 states and 264 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:24:22,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:24:22,164 INFO L93 Difference]: Finished difference Result 532 states and 686 transitions. [2022-10-17 10:24:22,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:24:22,164 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2022-10-17 10:24:22,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:24:22,167 INFO L225 Difference]: With dead ends: 532 [2022-10-17 10:24:22,167 INFO L226 Difference]: Without dead ends: 330 [2022-10-17 10:24:22,168 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:24:22,169 INFO L413 NwaCegarLoop]: 321 mSDtfsCounter, 113 mSDsluCounter, 229 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 550 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 10:24:22,169 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 550 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 10:24:22,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330 states. [2022-10-17 10:24:22,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 330 to 312. [2022-10-17 10:24:22,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 312 states, 300 states have (on average 1.27) internal successors, (381), 306 states have internal predecessors, (381), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2022-10-17 10:24:22,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 397 transitions. [2022-10-17 10:24:22,187 INFO L78 Accepts]: Start accepts. Automaton has 312 states and 397 transitions. Word has length 66 [2022-10-17 10:24:22,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:24:22,188 INFO L495 AbstractCegarLoop]: Abstraction has 312 states and 397 transitions. [2022-10-17 10:24:22,188 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:24:22,188 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states and 397 transitions. [2022-10-17 10:24:22,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-10-17 10:24:22,189 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:24:22,190 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:24:22,234 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acb4b796-7e54-4b2c-9fe5-178b9a4b1dfb/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-10-17 10:24:22,410 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acb4b796-7e54-4b2c-9fe5-178b9a4b1dfb/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:24:22,410 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:24:22,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:24:22,410 INFO L85 PathProgramCache]: Analyzing trace with hash 917413940, now seen corresponding path program 1 times [2022-10-17 10:24:22,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:24:22,411 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644544492] [2022-10-17 10:24:22,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:24:22,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:24:22,492 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-17 10:24:22,493 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [384833041] [2022-10-17 10:24:22,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:24:22,495 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:24:22,495 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acb4b796-7e54-4b2c-9fe5-178b9a4b1dfb/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:24:22,496 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acb4b796-7e54-4b2c-9fe5-178b9a4b1dfb/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:24:22,516 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acb4b796-7e54-4b2c-9fe5-178b9a4b1dfb/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-10-17 10:24:23,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:24:23,111 INFO L263 TraceCheckSpWp]: Trace formula consists of 724 conjuncts, 5 conjunts are in the unsatisfiable core [2022-10-17 10:24:23,117 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:24:23,186 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-10-17 10:24:23,212 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 15 treesize of output 7 [2022-10-17 10:24:23,223 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-10-17 10:24:23,224 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:24:23,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:24:23,224 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1644544492] [2022-10-17 10:24:23,224 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-17 10:24:23,224 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [384833041] [2022-10-17 10:24:23,225 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [384833041] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:24:23,225 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:24:23,225 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-17 10:24:23,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055742116] [2022-10-17 10:24:23,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:24:23,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-17 10:24:23,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:24:23,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-17 10:24:23,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-17 10:24:23,229 INFO L87 Difference]: Start difference. First operand 312 states and 397 transitions. Second operand has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-10-17 10:24:23,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:24:23,602 INFO L93 Difference]: Finished difference Result 427 states and 554 transitions. [2022-10-17 10:24:23,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-17 10:24:23,603 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 81 [2022-10-17 10:24:23,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:24:23,606 INFO L225 Difference]: With dead ends: 427 [2022-10-17 10:24:23,606 INFO L226 Difference]: Without dead ends: 406 [2022-10-17 10:24:23,606 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-10-17 10:24:23,623 INFO L413 NwaCegarLoop]: 245 mSDtfsCounter, 102 mSDsluCounter, 429 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 674 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-10-17 10:24:23,624 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 674 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-10-17 10:24:23,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 406 states. [2022-10-17 10:24:23,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 406 to 314. [2022-10-17 10:24:23,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 314 states, 302 states have (on average 1.2682119205298013) internal successors, (383), 308 states have internal predecessors, (383), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2022-10-17 10:24:23,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 314 states to 314 states and 399 transitions. [2022-10-17 10:24:23,645 INFO L78 Accepts]: Start accepts. Automaton has 314 states and 399 transitions. Word has length 81 [2022-10-17 10:24:23,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:24:23,645 INFO L495 AbstractCegarLoop]: Abstraction has 314 states and 399 transitions. [2022-10-17 10:24:23,646 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-10-17 10:24:23,646 INFO L276 IsEmpty]: Start isEmpty. Operand 314 states and 399 transitions. [2022-10-17 10:24:23,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-10-17 10:24:23,647 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:24:23,647 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:24:23,686 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acb4b796-7e54-4b2c-9fe5-178b9a4b1dfb/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-10-17 10:24:23,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acb4b796-7e54-4b2c-9fe5-178b9a4b1dfb/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:24:23,868 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:24:23,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:24:23,869 INFO L85 PathProgramCache]: Analyzing trace with hash 247470663, now seen corresponding path program 1 times [2022-10-17 10:24:23,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:24:23,869 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1262991129] [2022-10-17 10:24:23,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:24:23,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:24:23,929 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-17 10:24:23,930 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1701669428] [2022-10-17 10:24:23,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:24:23,930 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:24:23,930 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acb4b796-7e54-4b2c-9fe5-178b9a4b1dfb/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:24:23,931 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acb4b796-7e54-4b2c-9fe5-178b9a4b1dfb/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:24:23,933 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acb4b796-7e54-4b2c-9fe5-178b9a4b1dfb/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-10-17 10:24:24,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:24:24,541 INFO L263 TraceCheckSpWp]: Trace formula consists of 774 conjuncts, 3 conjunts are in the unsatisfiable core [2022-10-17 10:24:24,546 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:24:24,575 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-10-17 10:24:24,576 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:24:24,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:24:24,579 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1262991129] [2022-10-17 10:24:24,579 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-17 10:24:24,579 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1701669428] [2022-10-17 10:24:24,579 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1701669428] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:24:24,579 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:24:24,580 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 10:24:24,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456326179] [2022-10-17 10:24:24,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:24:24,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:24:24,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:24:24,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:24:24,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:24:24,582 INFO L87 Difference]: Start difference. First operand 314 states and 399 transitions. Second operand has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-10-17 10:24:24,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:24:24,658 INFO L93 Difference]: Finished difference Result 521 states and 685 transitions. [2022-10-17 10:24:24,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:24:24,659 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 111 [2022-10-17 10:24:24,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:24:24,664 INFO L225 Difference]: With dead ends: 521 [2022-10-17 10:24:24,664 INFO L226 Difference]: Without dead ends: 356 [2022-10-17 10:24:24,665 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:24:24,666 INFO L413 NwaCegarLoop]: 238 mSDtfsCounter, 8 mSDsluCounter, 221 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 459 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 10:24:24,666 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 459 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 10:24:24,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2022-10-17 10:24:24,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 354. [2022-10-17 10:24:24,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 354 states, 342 states have (on average 1.236842105263158) internal successors, (423), 348 states have internal predecessors, (423), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2022-10-17 10:24:24,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 354 states to 354 states and 439 transitions. [2022-10-17 10:24:24,685 INFO L78 Accepts]: Start accepts. Automaton has 354 states and 439 transitions. Word has length 111 [2022-10-17 10:24:24,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:24:24,685 INFO L495 AbstractCegarLoop]: Abstraction has 354 states and 439 transitions. [2022-10-17 10:24:24,686 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-10-17 10:24:24,686 INFO L276 IsEmpty]: Start isEmpty. Operand 354 states and 439 transitions. [2022-10-17 10:24:24,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-10-17 10:24:24,693 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:24:24,693 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:24:24,737 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acb4b796-7e54-4b2c-9fe5-178b9a4b1dfb/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-10-17 10:24:24,907 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acb4b796-7e54-4b2c-9fe5-178b9a4b1dfb/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:24:24,908 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:24:24,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:24:24,908 INFO L85 PathProgramCache]: Analyzing trace with hash 1258587913, now seen corresponding path program 1 times [2022-10-17 10:24:24,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:24:24,908 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578953248] [2022-10-17 10:24:24,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:24:24,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:24:24,966 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-17 10:24:24,967 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1355766311] [2022-10-17 10:24:24,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:24:24,967 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:24:24,967 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acb4b796-7e54-4b2c-9fe5-178b9a4b1dfb/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:24:24,968 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acb4b796-7e54-4b2c-9fe5-178b9a4b1dfb/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:24:24,988 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acb4b796-7e54-4b2c-9fe5-178b9a4b1dfb/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-10-17 10:24:25,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:24:25,567 INFO L263 TraceCheckSpWp]: Trace formula consists of 776 conjuncts, 4 conjunts are in the unsatisfiable core [2022-10-17 10:24:25,571 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:24:25,609 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-10-17 10:24:25,609 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:24:25,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:24:25,609 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1578953248] [2022-10-17 10:24:25,610 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-17 10:24:25,610 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1355766311] [2022-10-17 10:24:25,610 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1355766311] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:24:25,610 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:24:25,610 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-10-17 10:24:25,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822190503] [2022-10-17 10:24:25,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:24:25,611 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-17 10:24:25,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:24:25,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-17 10:24:25,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-10-17 10:24:25,612 INFO L87 Difference]: Start difference. First operand 354 states and 439 transitions. Second operand has 5 states, 5 states have (on average 20.6) internal successors, (103), 5 states have internal predecessors, (103), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-10-17 10:24:25,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:24:25,713 INFO L93 Difference]: Finished difference Result 536 states and 680 transitions. [2022-10-17 10:24:25,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-17 10:24:25,714 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.6) internal successors, (103), 5 states have internal predecessors, (103), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 111 [2022-10-17 10:24:25,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:24:25,716 INFO L225 Difference]: With dead ends: 536 [2022-10-17 10:24:25,717 INFO L226 Difference]: Without dead ends: 331 [2022-10-17 10:24:25,717 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-10-17 10:24:25,718 INFO L413 NwaCegarLoop]: 234 mSDtfsCounter, 104 mSDsluCounter, 568 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 802 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 10:24:25,719 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 802 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 10:24:25,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2022-10-17 10:24:25,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 326. [2022-10-17 10:24:25,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 326 states, 314 states have (on average 1.213375796178344) internal successors, (381), 320 states have internal predecessors, (381), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2022-10-17 10:24:25,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 397 transitions. [2022-10-17 10:24:25,734 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 397 transitions. Word has length 111 [2022-10-17 10:24:25,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:24:25,734 INFO L495 AbstractCegarLoop]: Abstraction has 326 states and 397 transitions. [2022-10-17 10:24:25,735 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.6) internal successors, (103), 5 states have internal predecessors, (103), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-10-17 10:24:25,735 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 397 transitions. [2022-10-17 10:24:25,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-10-17 10:24:25,736 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:24:25,737 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:24:25,776 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acb4b796-7e54-4b2c-9fe5-178b9a4b1dfb/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-10-17 10:24:25,950 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acb4b796-7e54-4b2c-9fe5-178b9a4b1dfb/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:24:25,951 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:24:25,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:24:25,951 INFO L85 PathProgramCache]: Analyzing trace with hash 100979453, now seen corresponding path program 1 times [2022-10-17 10:24:25,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:24:25,951 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [392450075] [2022-10-17 10:24:25,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:24:25,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:24:26,007 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-17 10:24:26,007 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1225676460] [2022-10-17 10:24:26,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:24:26,008 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:24:26,008 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acb4b796-7e54-4b2c-9fe5-178b9a4b1dfb/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:24:26,009 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acb4b796-7e54-4b2c-9fe5-178b9a4b1dfb/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:24:26,031 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acb4b796-7e54-4b2c-9fe5-178b9a4b1dfb/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-10-17 10:24:26,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:24:26,639 INFO L263 TraceCheckSpWp]: Trace formula consists of 764 conjuncts, 5 conjunts are in the unsatisfiable core [2022-10-17 10:24:26,643 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:24:26,812 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-10-17 10:24:26,813 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:24:26,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:24:26,813 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [392450075] [2022-10-17 10:24:26,813 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-17 10:24:26,813 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1225676460] [2022-10-17 10:24:26,814 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1225676460] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:24:26,814 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:24:26,814 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-17 10:24:26,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719509345] [2022-10-17 10:24:26,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:24:26,815 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-17 10:24:26,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:24:26,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-17 10:24:26,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-17 10:24:26,817 INFO L87 Difference]: Start difference. First operand 326 states and 397 transitions. Second operand has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-10-17 10:24:27,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:24:27,135 INFO L93 Difference]: Finished difference Result 720 states and 898 transitions. [2022-10-17 10:24:27,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-17 10:24:27,136 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 111 [2022-10-17 10:24:27,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:24:27,139 INFO L225 Difference]: With dead ends: 720 [2022-10-17 10:24:27,139 INFO L226 Difference]: Without dead ends: 442 [2022-10-17 10:24:27,140 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-10-17 10:24:27,141 INFO L413 NwaCegarLoop]: 276 mSDtfsCounter, 446 mSDsluCounter, 232 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 451 SdHoareTripleChecker+Valid, 508 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-10-17 10:24:27,141 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [451 Valid, 508 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-10-17 10:24:27,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 442 states. [2022-10-17 10:24:27,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 442 to 410. [2022-10-17 10:24:27,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 410 states, 398 states have (on average 1.2185929648241205) internal successors, (485), 404 states have internal predecessors, (485), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2022-10-17 10:24:27,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 410 states to 410 states and 501 transitions. [2022-10-17 10:24:27,164 INFO L78 Accepts]: Start accepts. Automaton has 410 states and 501 transitions. Word has length 111 [2022-10-17 10:24:27,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:24:27,165 INFO L495 AbstractCegarLoop]: Abstraction has 410 states and 501 transitions. [2022-10-17 10:24:27,165 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-10-17 10:24:27,165 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states and 501 transitions. [2022-10-17 10:24:27,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-10-17 10:24:27,167 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:24:27,167 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:24:27,195 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acb4b796-7e54-4b2c-9fe5-178b9a4b1dfb/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-10-17 10:24:27,378 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acb4b796-7e54-4b2c-9fe5-178b9a4b1dfb/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:24:27,378 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:24:27,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:24:27,378 INFO L85 PathProgramCache]: Analyzing trace with hash -1499063757, now seen corresponding path program 1 times [2022-10-17 10:24:27,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:24:27,379 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143600376] [2022-10-17 10:24:27,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:24:27,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:24:27,455 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-17 10:24:27,455 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [917152597] [2022-10-17 10:24:27,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:24:27,455 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:24:27,455 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acb4b796-7e54-4b2c-9fe5-178b9a4b1dfb/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:24:27,456 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acb4b796-7e54-4b2c-9fe5-178b9a4b1dfb/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:24:27,477 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acb4b796-7e54-4b2c-9fe5-178b9a4b1dfb/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process