./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test7-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 38b53e6a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fb42a68-2218-4a15-8c39-719c6a42fad1/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fb42a68-2218-4a15-8c39-719c6a42fad1/bin/uautomizer-ZsLfNo2U6R/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fb42a68-2218-4a15-8c39-719c6a42fad1/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fb42a68-2218-4a15-8c39-719c6a42fad1/bin/uautomizer-ZsLfNo2U6R/config/AutomizerReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test7-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fb42a68-2218-4a15-8c39-719c6a42fad1/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fb42a68-2218-4a15-8c39-719c6a42fad1/bin/uautomizer-ZsLfNo2U6R --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 3d4f4fa5c64db6e2d1986e03259021eba4df8a22df3a334e78927feece513264 --- 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-38b53e6 [2022-11-25 17:03:46,977 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 17:03:46,980 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 17:03:47,022 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 17:03:47,022 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 17:03:47,023 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 17:03:47,025 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 17:03:47,027 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 17:03:47,029 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 17:03:47,035 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 17:03:47,037 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 17:03:47,041 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 17:03:47,042 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 17:03:47,049 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 17:03:47,052 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 17:03:47,055 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 17:03:47,056 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 17:03:47,059 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 17:03:47,061 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 17:03:47,069 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 17:03:47,072 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 17:03:47,075 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 17:03:47,077 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 17:03:47,078 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 17:03:47,089 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 17:03:47,090 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 17:03:47,090 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 17:03:47,093 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 17:03:47,093 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 17:03:47,094 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 17:03:47,096 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 17:03:47,097 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 17:03:47,099 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 17:03:47,101 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 17:03:47,103 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 17:03:47,103 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 17:03:47,104 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 17:03:47,104 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 17:03:47,104 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 17:03:47,105 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 17:03:47,106 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 17:03:47,107 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fb42a68-2218-4a15-8c39-719c6a42fad1/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-25 17:03:47,161 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 17:03:47,161 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 17:03:47,162 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 17:03:47,162 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 17:03:47,163 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 17:03:47,163 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 17:03:47,164 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 17:03:47,164 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 17:03:47,165 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 17:03:47,165 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 17:03:47,165 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 17:03:47,165 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 17:03:47,166 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 17:03:47,166 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 17:03:47,166 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 17:03:47,166 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 17:03:47,167 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 17:03:47,167 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 17:03:47,167 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 17:03:47,167 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 17:03:47,168 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 17:03:47,168 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 17:03:47,168 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 17:03:47,168 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 17:03:47,169 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 17:03:47,169 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 17:03:47,169 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 17:03:47,169 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 17:03:47,170 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-25 17:03:47,172 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 17:03:47,173 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-25 17:03:47,173 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 17:03:47,173 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-25 17:03:47,174 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 17:03:47,174 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fb42a68-2218-4a15-8c39-719c6a42fad1/bin/uautomizer-ZsLfNo2U6R/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fb42a68-2218-4a15-8c39-719c6a42fad1/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3d4f4fa5c64db6e2d1986e03259021eba4df8a22df3a334e78927feece513264 [2022-11-25 17:03:47,488 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 17:03:47,511 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 17:03:47,514 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 17:03:47,516 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 17:03:47,516 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 17:03:47,518 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fb42a68-2218-4a15-8c39-719c6a42fad1/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test7-1.i [2022-11-25 17:03:50,978 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 17:03:51,347 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 17:03:51,348 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fb42a68-2218-4a15-8c39-719c6a42fad1/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test7-1.i [2022-11-25 17:03:51,365 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fb42a68-2218-4a15-8c39-719c6a42fad1/bin/uautomizer-ZsLfNo2U6R/data/200fff396/33639c25681f4471834c4867b66e7b69/FLAG75da0e19d [2022-11-25 17:03:51,394 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fb42a68-2218-4a15-8c39-719c6a42fad1/bin/uautomizer-ZsLfNo2U6R/data/200fff396/33639c25681f4471834c4867b66e7b69 [2022-11-25 17:03:51,397 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 17:03:51,399 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 17:03:51,400 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 17:03:51,400 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 17:03:51,409 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 17:03:51,410 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:03:51" (1/1) ... [2022-11-25 17:03:51,411 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d0a48a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:03:51, skipping insertion in model container [2022-11-25 17:03:51,411 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:03:51" (1/1) ... [2022-11-25 17:03:51,422 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 17:03:51,502 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 17:03:51,943 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fb42a68-2218-4a15-8c39-719c6a42fad1/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test7-1.i[33021,33034] [2022-11-25 17:03:52,139 WARN L623 FunctionHandler]: Unknown extern function memcmp [2022-11-25 17:03:52,149 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fb42a68-2218-4a15-8c39-719c6a42fad1/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test7-1.i[44124,44137] [2022-11-25 17:03:52,155 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fb42a68-2218-4a15-8c39-719c6a42fad1/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test7-1.i[44245,44258] [2022-11-25 17:03:52,166 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 17:03:52,184 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 17:03:52,241 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fb42a68-2218-4a15-8c39-719c6a42fad1/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test7-1.i[33021,33034] [2022-11-25 17:03:52,332 WARN L623 FunctionHandler]: Unknown extern function memcmp [2022-11-25 17:03:52,340 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fb42a68-2218-4a15-8c39-719c6a42fad1/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test7-1.i[44124,44137] [2022-11-25 17:03:52,341 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fb42a68-2218-4a15-8c39-719c6a42fad1/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test7-1.i[44245,44258] [2022-11-25 17:03:52,344 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 17:03:52,440 INFO L208 MainTranslator]: Completed translation [2022-11-25 17:03:52,441 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:03:52 WrapperNode [2022-11-25 17:03:52,441 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 17:03:52,442 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 17:03:52,442 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 17:03:52,444 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 17:03:52,451 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:03:52" (1/1) ... [2022-11-25 17:03:52,490 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:03:52" (1/1) ... [2022-11-25 17:03:52,565 INFO L138 Inliner]: procedures = 176, calls = 277, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 992 [2022-11-25 17:03:52,566 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 17:03:52,567 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 17:03:52,567 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 17:03:52,567 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 17:03:52,578 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:03:52" (1/1) ... [2022-11-25 17:03:52,579 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:03:52" (1/1) ... [2022-11-25 17:03:52,590 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:03:52" (1/1) ... [2022-11-25 17:03:52,590 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:03:52" (1/1) ... [2022-11-25 17:03:52,642 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:03:52" (1/1) ... [2022-11-25 17:03:52,655 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:03:52" (1/1) ... [2022-11-25 17:03:52,660 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:03:52" (1/1) ... [2022-11-25 17:03:52,664 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:03:52" (1/1) ... [2022-11-25 17:03:52,686 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 17:03:52,687 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 17:03:52,690 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 17:03:52,690 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 17:03:52,691 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:03:52" (1/1) ... [2022-11-25 17:03:52,700 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 17:03:52,719 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fb42a68-2218-4a15-8c39-719c6a42fad1/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:03:52,733 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fb42a68-2218-4a15-8c39-719c6a42fad1/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 17:03:52,761 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fb42a68-2218-4a15-8c39-719c6a42fad1/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 17:03:52,787 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-25 17:03:52,787 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-25 17:03:52,787 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-25 17:03:52,788 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-25 17:03:52,788 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-25 17:03:52,788 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 17:03:52,788 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-25 17:03:52,789 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-25 17:03:52,789 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2022-11-25 17:03:52,790 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-25 17:03:52,790 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-25 17:03:52,790 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 17:03:52,790 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 17:03:52,790 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 17:03:53,088 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 17:03:53,091 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 17:03:54,913 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 17:03:54,925 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 17:03:54,926 INFO L300 CfgBuilder]: Removed 63 assume(true) statements. [2022-11-25 17:03:54,929 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:03:54 BoogieIcfgContainer [2022-11-25 17:03:54,929 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 17:03:54,934 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 17:03:54,934 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 17:03:54,938 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 17:03:54,939 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 05:03:51" (1/3) ... [2022-11-25 17:03:54,941 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e0430f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 05:03:54, skipping insertion in model container [2022-11-25 17:03:54,942 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:03:52" (2/3) ... [2022-11-25 17:03:54,943 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e0430f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 05:03:54, skipping insertion in model container [2022-11-25 17:03:54,943 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:03:54" (3/3) ... [2022-11-25 17:03:54,950 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_BER_test7-1.i [2022-11-25 17:03:54,979 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 17:03:54,979 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-25 17:03:55,071 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 17:03:55,082 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;@303dd28f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 17:03:55,083 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-25 17:03:55,089 INFO L276 IsEmpty]: Start isEmpty. Operand has 184 states, 177 states have (on average 1.7005649717514124) internal successors, (301), 179 states have internal predecessors, (301), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-25 17:03:55,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-25 17:03:55,096 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:03:55,097 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:03:55,097 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:03:55,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:03:55,104 INFO L85 PathProgramCache]: Analyzing trace with hash 1993316328, now seen corresponding path program 1 times [2022-11-25 17:03:55,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:03:55,117 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1327575959] [2022-11-25 17:03:55,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:03:55,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:03:55,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:03:55,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:03:55,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:03:55,384 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1327575959] [2022-11-25 17:03:55,386 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1327575959] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:03:55,386 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:03:55,386 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 17:03:55,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805763844] [2022-11-25 17:03:55,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:03:55,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-25 17:03:55,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:03:55,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-25 17:03:55,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-25 17:03:55,471 INFO L87 Difference]: Start difference. First operand has 184 states, 177 states have (on average 1.7005649717514124) internal successors, (301), 179 states have internal predecessors, (301), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:03:55,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:03:55,553 INFO L93 Difference]: Finished difference Result 365 states and 611 transitions. [2022-11-25 17:03:55,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-25 17:03:55,556 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-25 17:03:55,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:03:55,570 INFO L225 Difference]: With dead ends: 365 [2022-11-25 17:03:55,571 INFO L226 Difference]: Without dead ends: 179 [2022-11-25 17:03:55,576 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 [2022-11-25 17:03:55,584 INFO L413 NwaCegarLoop]: 237 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, 237 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 [2022-11-25 17:03:55,586 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 237 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 17:03:55,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2022-11-25 17:03:55,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 179. [2022-11-25 17:03:55,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 173 states have (on average 1.3121387283236994) internal successors, (227), 174 states have internal predecessors, (227), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-25 17:03:55,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 233 transitions. [2022-11-25 17:03:55,676 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 233 transitions. Word has length 8 [2022-11-25 17:03:55,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:03:55,677 INFO L495 AbstractCegarLoop]: Abstraction has 179 states and 233 transitions. [2022-11-25 17:03:55,677 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:03:55,677 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 233 transitions. [2022-11-25 17:03:55,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-25 17:03:55,678 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:03:55,678 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:03:55,678 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-25 17:03:55,679 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:03:55,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:03:55,680 INFO L85 PathProgramCache]: Analyzing trace with hash -923396581, now seen corresponding path program 1 times [2022-11-25 17:03:55,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:03:55,680 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167527601] [2022-11-25 17:03:55,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:03:55,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:03:55,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:03:55,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:03:55,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:03:55,914 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167527601] [2022-11-25 17:03:55,915 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1167527601] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:03:55,915 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:03:55,915 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 17:03:55,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810721555] [2022-11-25 17:03:55,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:03:55,917 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 17:03:55,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:03:55,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 17:03:55,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 17:03:55,919 INFO L87 Difference]: Start difference. First operand 179 states and 233 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:03:56,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:03:56,532 INFO L93 Difference]: Finished difference Result 384 states and 502 transitions. [2022-11-25 17:03:56,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 17:03:56,533 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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 10 [2022-11-25 17:03:56,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:03:56,535 INFO L225 Difference]: With dead ends: 384 [2022-11-25 17:03:56,536 INFO L226 Difference]: Without dead ends: 297 [2022-11-25 17:03:56,537 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-25 17:03:56,541 INFO L413 NwaCegarLoop]: 203 mSDtfsCounter, 147 mSDsluCounter, 359 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 562 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-25 17:03:56,542 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [147 Valid, 562 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-25 17:03:56,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2022-11-25 17:03:56,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 181. [2022-11-25 17:03:56,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 175 states have (on average 1.3085714285714285) internal successors, (229), 176 states have internal predecessors, (229), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-25 17:03:56,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 235 transitions. [2022-11-25 17:03:56,568 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 235 transitions. Word has length 10 [2022-11-25 17:03:56,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:03:56,569 INFO L495 AbstractCegarLoop]: Abstraction has 181 states and 235 transitions. [2022-11-25 17:03:56,569 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:03:56,570 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 235 transitions. [2022-11-25 17:03:56,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-11-25 17:03:56,573 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:03:56,573 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] [2022-11-25 17:03:56,574 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-25 17:03:56,574 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:03:56,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:03:56,581 INFO L85 PathProgramCache]: Analyzing trace with hash -413647769, now seen corresponding path program 1 times [2022-11-25 17:03:56,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:03:56,581 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025749003] [2022-11-25 17:03:56,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:03:56,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:03:56,814 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-25 17:03:56,814 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1124476631] [2022-11-25 17:03:56,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:03:56,815 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:03:56,815 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fb42a68-2218-4a15-8c39-719c6a42fad1/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:03:56,819 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fb42a68-2218-4a15-8c39-719c6a42fad1/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:03:56,830 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fb42a68-2218-4a15-8c39-719c6a42fad1/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-25 17:03:57,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:03:57,683 INFO L263 TraceCheckSpWp]: Trace formula consists of 1571 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-25 17:03:57,693 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:03:57,731 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:03:57,731 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 17:03:57,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:03:57,732 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1025749003] [2022-11-25 17:03:57,732 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-25 17:03:57,732 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1124476631] [2022-11-25 17:03:57,732 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1124476631] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:03:57,733 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:03:57,733 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 17:03:57,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640386590] [2022-11-25 17:03:57,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:03:57,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:03:57,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:03:57,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:03:57,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:03:57,736 INFO L87 Difference]: Start difference. First operand 181 states and 235 transitions. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:03:57,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:03:57,850 INFO L93 Difference]: Finished difference Result 379 states and 497 transitions. [2022-11-25 17:03:57,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:03:57,866 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 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 62 [2022-11-25 17:03:57,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:03:57,867 INFO L225 Difference]: With dead ends: 379 [2022-11-25 17:03:57,867 INFO L226 Difference]: Without dead ends: 202 [2022-11-25 17:03:57,868 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:03:57,870 INFO L413 NwaCegarLoop]: 213 mSDtfsCounter, 9 mSDsluCounter, 198 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 411 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 [2022-11-25 17:03:57,870 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 411 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 17:03:57,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2022-11-25 17:03:57,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 201. [2022-11-25 17:03:57,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 201 states, 195 states have (on average 1.2769230769230768) internal successors, (249), 196 states have internal predecessors, (249), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-25 17:03:57,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 255 transitions. [2022-11-25 17:03:57,886 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 255 transitions. Word has length 62 [2022-11-25 17:03:57,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:03:57,886 INFO L495 AbstractCegarLoop]: Abstraction has 201 states and 255 transitions. [2022-11-25 17:03:57,887 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:03:57,887 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 255 transitions. [2022-11-25 17:03:57,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-11-25 17:03:57,889 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:03:57,889 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] [2022-11-25 17:03:57,909 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fb42a68-2218-4a15-8c39-719c6a42fad1/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-25 17:03:58,103 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fb42a68-2218-4a15-8c39-719c6a42fad1/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:03:58,103 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:03:58,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:03:58,104 INFO L85 PathProgramCache]: Analyzing trace with hash 483745509, now seen corresponding path program 1 times [2022-11-25 17:03:58,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:03:58,104 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125992614] [2022-11-25 17:03:58,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:03:58,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:03:58,281 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-25 17:03:58,286 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [171523492] [2022-11-25 17:03:58,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:03:58,286 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:03:58,286 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fb42a68-2218-4a15-8c39-719c6a42fad1/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:03:58,288 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fb42a68-2218-4a15-8c39-719c6a42fad1/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:03:58,312 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fb42a68-2218-4a15-8c39-719c6a42fad1/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-25 17:03:59,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:03:59,176 INFO L263 TraceCheckSpWp]: Trace formula consists of 1573 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-25 17:03:59,181 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:03:59,229 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:03:59,230 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 17:03:59,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:03:59,230 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125992614] [2022-11-25 17:03:59,230 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-25 17:03:59,231 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [171523492] [2022-11-25 17:03:59,231 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [171523492] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:03:59,231 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:03:59,231 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 17:03:59,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348276845] [2022-11-25 17:03:59,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:03:59,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 17:03:59,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:03:59,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 17:03:59,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 17:03:59,234 INFO L87 Difference]: Start difference. First operand 201 states and 255 transitions. Second operand has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:03:59,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:03:59,334 INFO L93 Difference]: Finished difference Result 390 states and 498 transitions. [2022-11-25 17:03:59,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 17:03:59,335 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 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 62 [2022-11-25 17:03:59,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:03:59,337 INFO L225 Difference]: With dead ends: 390 [2022-11-25 17:03:59,337 INFO L226 Difference]: Without dead ends: 193 [2022-11-25 17:03:59,338 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-25 17:03:59,339 INFO L413 NwaCegarLoop]: 213 mSDtfsCounter, 218 mSDsluCounter, 216 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 221 SdHoareTripleChecker+Valid, 429 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 17:03:59,340 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [221 Valid, 429 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 17:03:59,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2022-11-25 17:03:59,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 187. [2022-11-25 17:03:59,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 181 states have (on average 1.2596685082872927) internal successors, (228), 182 states have internal predecessors, (228), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-25 17:03:59,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 234 transitions. [2022-11-25 17:03:59,353 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 234 transitions. Word has length 62 [2022-11-25 17:03:59,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:03:59,353 INFO L495 AbstractCegarLoop]: Abstraction has 187 states and 234 transitions. [2022-11-25 17:03:59,353 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:03:59,354 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 234 transitions. [2022-11-25 17:03:59,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-11-25 17:03:59,355 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:03:59,356 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] [2022-11-25 17:03:59,378 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fb42a68-2218-4a15-8c39-719c6a42fad1/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-25 17:03:59,566 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fb42a68-2218-4a15-8c39-719c6a42fad1/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:03:59,566 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:03:59,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:03:59,567 INFO L85 PathProgramCache]: Analyzing trace with hash 955892211, now seen corresponding path program 1 times [2022-11-25 17:03:59,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:03:59,567 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791146703] [2022-11-25 17:03:59,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:03:59,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:03:59,748 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-25 17:03:59,757 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1762191219] [2022-11-25 17:03:59,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:03:59,758 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:03:59,758 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fb42a68-2218-4a15-8c39-719c6a42fad1/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:03:59,766 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fb42a68-2218-4a15-8c39-719c6a42fad1/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:03:59,772 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fb42a68-2218-4a15-8c39-719c6a42fad1/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-25 17:04:00,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:04:00,745 INFO L263 TraceCheckSpWp]: Trace formula consists of 1559 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-25 17:04:00,750 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:04:00,989 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:04:00,989 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 17:04:00,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:04:00,990 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [791146703] [2022-11-25 17:04:00,990 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-25 17:04:00,990 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1762191219] [2022-11-25 17:04:00,991 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1762191219] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:04:00,991 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:04:00,991 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 17:04:00,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007289101] [2022-11-25 17:04:00,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:04:00,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:04:00,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:04:00,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:04:00,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:04:00,994 INFO L87 Difference]: Start difference. First operand 187 states and 234 transitions. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:04:01,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:04:01,132 INFO L93 Difference]: Finished difference Result 483 states and 604 transitions. [2022-11-25 17:04:01,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:04:01,134 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 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 62 [2022-11-25 17:04:01,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:04:01,135 INFO L225 Difference]: With dead ends: 483 [2022-11-25 17:04:01,136 INFO L226 Difference]: Without dead ends: 300 [2022-11-25 17:04:01,137 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:04:01,140 INFO L413 NwaCegarLoop]: 269 mSDtfsCounter, 101 mSDsluCounter, 194 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 463 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 [2022-11-25 17:04:01,140 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 463 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 17:04:01,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2022-11-25 17:04:01,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 293. [2022-11-25 17:04:01,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 293 states, 287 states have (on average 1.2578397212543555) internal successors, (361), 288 states have internal predecessors, (361), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-25 17:04:01,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 367 transitions. [2022-11-25 17:04:01,173 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 367 transitions. Word has length 62 [2022-11-25 17:04:01,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:04:01,175 INFO L495 AbstractCegarLoop]: Abstraction has 293 states and 367 transitions. [2022-11-25 17:04:01,175 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:04:01,176 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 367 transitions. [2022-11-25 17:04:01,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-11-25 17:04:01,183 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:04:01,183 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] [2022-11-25 17:04:01,199 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fb42a68-2218-4a15-8c39-719c6a42fad1/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-11-25 17:04:01,394 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fb42a68-2218-4a15-8c39-719c6a42fad1/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:04:01,394 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:04:01,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:04:01,395 INFO L85 PathProgramCache]: Analyzing trace with hash 1860031521, now seen corresponding path program 1 times [2022-11-25 17:04:01,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:04:01,395 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [611338906] [2022-11-25 17:04:01,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:04:01,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:04:01,516 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-25 17:04:01,518 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1706010413] [2022-11-25 17:04:01,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:04:01,521 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:04:01,521 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fb42a68-2218-4a15-8c39-719c6a42fad1/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:04:01,524 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fb42a68-2218-4a15-8c39-719c6a42fad1/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:04:01,554 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fb42a68-2218-4a15-8c39-719c6a42fad1/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-25 17:04:02,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:04:02,246 INFO L263 TraceCheckSpWp]: Trace formula consists of 696 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-25 17:04:02,251 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:04:02,315 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-25 17:04:02,336 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-25 17:04:02,348 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-25 17:04:02,349 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 17:04:02,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:04:02,349 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [611338906] [2022-11-25 17:04:02,349 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-25 17:04:02,349 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1706010413] [2022-11-25 17:04:02,350 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1706010413] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:04:02,350 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:04:02,350 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 17:04:02,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092618356] [2022-11-25 17:04:02,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:04:02,353 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 17:04:02,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:04:02,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 17:04:02,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 17:04:02,355 INFO L87 Difference]: Start difference. First operand 293 states and 367 transitions. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 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) [2022-11-25 17:04:02,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:04:02,786 INFO L93 Difference]: Finished difference Result 391 states and 497 transitions. [2022-11-25 17:04:02,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 17:04:02,787 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 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 77 [2022-11-25 17:04:02,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:04:02,790 INFO L225 Difference]: With dead ends: 391 [2022-11-25 17:04:02,791 INFO L226 Difference]: Without dead ends: 387 [2022-11-25 17:04:02,791 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-25 17:04:02,792 INFO L413 NwaCegarLoop]: 215 mSDtfsCounter, 103 mSDsluCounter, 371 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 586 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-25 17:04:02,792 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 586 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-25 17:04:02,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 387 states. [2022-11-25 17:04:02,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 387 to 295. [2022-11-25 17:04:02,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 295 states, 289 states have (on average 1.2560553633217992) internal successors, (363), 290 states have internal predecessors, (363), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-25 17:04:02,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 369 transitions. [2022-11-25 17:04:02,809 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 369 transitions. Word has length 77 [2022-11-25 17:04:02,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:04:02,811 INFO L495 AbstractCegarLoop]: Abstraction has 295 states and 369 transitions. [2022-11-25 17:04:02,811 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 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) [2022-11-25 17:04:02,811 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 369 transitions. [2022-11-25 17:04:02,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-11-25 17:04:02,813 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:04:02,813 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] [2022-11-25 17:04:02,823 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fb42a68-2218-4a15-8c39-719c6a42fad1/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-25 17:04:03,023 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fb42a68-2218-4a15-8c39-719c6a42fad1/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-25 17:04:03,023 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:04:03,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:04:03,024 INFO L85 PathProgramCache]: Analyzing trace with hash 1180652711, now seen corresponding path program 1 times [2022-11-25 17:04:03,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:04:03,024 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273870544] [2022-11-25 17:04:03,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:04:03,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:04:03,088 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-25 17:04:03,088 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [391529499] [2022-11-25 17:04:03,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:04:03,089 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:04:03,089 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fb42a68-2218-4a15-8c39-719c6a42fad1/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:04:03,090 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fb42a68-2218-4a15-8c39-719c6a42fad1/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:04:03,110 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fb42a68-2218-4a15-8c39-719c6a42fad1/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-25 17:04:03,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:04:03,865 INFO L263 TraceCheckSpWp]: Trace formula consists of 772 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-25 17:04:03,870 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:04:03,885 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-25 17:04:03,885 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 17:04:03,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:04:03,886 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273870544] [2022-11-25 17:04:03,886 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-25 17:04:03,886 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [391529499] [2022-11-25 17:04:03,886 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [391529499] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:04:03,887 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:04:03,887 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 17:04:03,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670876170] [2022-11-25 17:04:03,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:04:03,888 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:04:03,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:04:03,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:04:03,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:04:03,889 INFO L87 Difference]: Start difference. First operand 295 states and 369 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) [2022-11-25 17:04:03,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:04:03,979 INFO L93 Difference]: Finished difference Result 485 states and 628 transitions. [2022-11-25 17:04:03,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:04:03,980 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 [2022-11-25 17:04:03,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:04:03,982 INFO L225 Difference]: With dead ends: 485 [2022-11-25 17:04:03,982 INFO L226 Difference]: Without dead ends: 337 [2022-11-25 17:04:03,982 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 [2022-11-25 17:04:03,983 INFO L413 NwaCegarLoop]: 206 mSDtfsCounter, 10 mSDsluCounter, 191 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 397 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 [2022-11-25 17:04:03,984 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 397 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 17:04:03,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337 states. [2022-11-25 17:04:03,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 335. [2022-11-25 17:04:03,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 335 states, 329 states have (on average 1.2249240121580547) internal successors, (403), 330 states have internal predecessors, (403), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-25 17:04:03,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 409 transitions. [2022-11-25 17:04:03,997 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 409 transitions. Word has length 111 [2022-11-25 17:04:03,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:04:03,998 INFO L495 AbstractCegarLoop]: Abstraction has 335 states and 409 transitions. [2022-11-25 17:04:03,998 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) [2022-11-25 17:04:03,999 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 409 transitions. [2022-11-25 17:04:04,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-11-25 17:04:04,000 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:04:04,001 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] [2022-11-25 17:04:04,014 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fb42a68-2218-4a15-8c39-719c6a42fad1/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-25 17:04:04,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fb42a68-2218-4a15-8c39-719c6a42fad1/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:04:04,211 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:04:04,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:04:04,212 INFO L85 PathProgramCache]: Analyzing trace with hash 899855019, now seen corresponding path program 1 times [2022-11-25 17:04:04,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:04:04,212 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [495784278] [2022-11-25 17:04:04,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:04:04,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:04:04,282 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-25 17:04:04,283 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1170941454] [2022-11-25 17:04:04,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:04:04,283 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:04:04,283 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fb42a68-2218-4a15-8c39-719c6a42fad1/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:04:04,285 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fb42a68-2218-4a15-8c39-719c6a42fad1/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:04:04,289 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fb42a68-2218-4a15-8c39-719c6a42fad1/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-25 17:04:04,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:04:05,000 INFO L263 TraceCheckSpWp]: Trace formula consists of 776 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-25 17:04:05,004 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:04:05,021 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-25 17:04:05,022 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 17:04:05,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:04:05,022 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [495784278] [2022-11-25 17:04:05,022 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-25 17:04:05,023 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1170941454] [2022-11-25 17:04:05,023 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1170941454] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:04:05,023 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:04:05,023 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 17:04:05,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42493073] [2022-11-25 17:04:05,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:04:05,024 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 17:04:05,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:04:05,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 17:04:05,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 17:04:05,026 INFO L87 Difference]: Start difference. First operand 335 states and 409 transitions. Second operand has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 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) [2022-11-25 17:04:05,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:04:05,111 INFO L93 Difference]: Finished difference Result 500 states and 623 transitions. [2022-11-25 17:04:05,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 17:04:05,112 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 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 [2022-11-25 17:04:05,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:04:05,114 INFO L225 Difference]: With dead ends: 500 [2022-11-25 17:04:05,114 INFO L226 Difference]: Without dead ends: 312 [2022-11-25 17:04:05,115 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-25 17:04:05,116 INFO L413 NwaCegarLoop]: 204 mSDtfsCounter, 110 mSDsluCounter, 309 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 513 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 17:04:05,116 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 513 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 17:04:05,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2022-11-25 17:04:05,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 307. [2022-11-25 17:04:05,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 307 states, 301 states have (on average 1.1993355481727574) internal successors, (361), 302 states have internal predecessors, (361), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-25 17:04:05,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 367 transitions. [2022-11-25 17:04:05,129 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 367 transitions. Word has length 111 [2022-11-25 17:04:05,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:04:05,130 INFO L495 AbstractCegarLoop]: Abstraction has 307 states and 367 transitions. [2022-11-25 17:04:05,130 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 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) [2022-11-25 17:04:05,131 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 367 transitions. [2022-11-25 17:04:05,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-11-25 17:04:05,132 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:04:05,132 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] [2022-11-25 17:04:05,143 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fb42a68-2218-4a15-8c39-719c6a42fad1/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-25 17:04:05,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fb42a68-2218-4a15-8c39-719c6a42fad1/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:04:05,344 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:04:05,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:04:05,344 INFO L85 PathProgramCache]: Analyzing trace with hash 17006173, now seen corresponding path program 1 times [2022-11-25 17:04:05,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:04:05,344 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1613459457] [2022-11-25 17:04:05,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:04:05,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:04:05,421 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-25 17:04:05,422 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1134608886] [2022-11-25 17:04:05,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:04:05,422 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:04:05,422 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fb42a68-2218-4a15-8c39-719c6a42fad1/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:04:05,424 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fb42a68-2218-4a15-8c39-719c6a42fad1/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:04:05,430 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fb42a68-2218-4a15-8c39-719c6a42fad1/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-25 17:04:06,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:04:06,223 INFO L263 TraceCheckSpWp]: Trace formula consists of 762 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-25 17:04:06,227 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:04:06,439 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-25 17:04:06,439 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 17:04:06,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:04:06,440 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1613459457] [2022-11-25 17:04:06,440 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-25 17:04:06,440 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1134608886] [2022-11-25 17:04:06,440 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1134608886] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:04:06,440 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:04:06,441 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 17:04:06,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847369922] [2022-11-25 17:04:06,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:04:06,441 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 17:04:06,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:04:06,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 17:04:06,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 17:04:06,443 INFO L87 Difference]: Start difference. First operand 307 states and 367 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) [2022-11-25 17:04:06,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:04:06,855 INFO L93 Difference]: Finished difference Result 657 states and 792 transitions. [2022-11-25 17:04:06,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 17:04:06,856 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 [2022-11-25 17:04:06,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:04:06,858 INFO L225 Difference]: With dead ends: 657 [2022-11-25 17:04:06,859 INFO L226 Difference]: Without dead ends: 398 [2022-11-25 17:04:06,859 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 [2022-11-25 17:04:06,860 INFO L413 NwaCegarLoop]: 221 mSDtfsCounter, 406 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 406 SdHoareTripleChecker+Valid, 373 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-25 17:04:06,860 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [406 Valid, 373 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-25 17:04:06,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 398 states. [2022-11-25 17:04:06,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 398 to 391. [2022-11-25 17:04:06,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 391 states, 385 states have (on average 1.2077922077922079) internal successors, (465), 386 states have internal predecessors, (465), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-25 17:04:06,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 471 transitions. [2022-11-25 17:04:06,881 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 471 transitions. Word has length 111 [2022-11-25 17:04:06,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:04:06,881 INFO L495 AbstractCegarLoop]: Abstraction has 391 states and 471 transitions. [2022-11-25 17:04:06,882 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) [2022-11-25 17:04:06,882 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 471 transitions. [2022-11-25 17:04:06,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-11-25 17:04:06,883 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:04:06,884 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] [2022-11-25 17:04:06,900 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fb42a68-2218-4a15-8c39-719c6a42fad1/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-25 17:04:07,093 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fb42a68-2218-4a15-8c39-719c6a42fad1/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:04:07,094 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:04:07,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:04:07,094 INFO L85 PathProgramCache]: Analyzing trace with hash -793876116, now seen corresponding path program 1 times [2022-11-25 17:04:07,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:04:07,094 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760679578] [2022-11-25 17:04:07,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:04:07,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:04:07,163 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-25 17:04:07,163 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1490136905] [2022-11-25 17:04:07,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:04:07,163 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:04:07,164 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fb42a68-2218-4a15-8c39-719c6a42fad1/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:04:07,165 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fb42a68-2218-4a15-8c39-719c6a42fad1/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:04:07,186 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fb42a68-2218-4a15-8c39-719c6a42fad1/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-25 17:04:39,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:04:39,938 INFO L263 TraceCheckSpWp]: Trace formula consists of 788 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-25 17:04:39,943 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:04:39,975 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-25 17:04:39,975 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 17:04:39,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:04:39,976 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [760679578] [2022-11-25 17:04:39,976 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-25 17:04:39,976 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1490136905] [2022-11-25 17:04:39,976 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1490136905] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:04:39,976 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:04:39,977 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 17:04:39,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200116969] [2022-11-25 17:04:39,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:04:39,981 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 17:04:39,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:04:39,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 17:04:39,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 17:04:39,983 INFO L87 Difference]: Start difference. First operand 391 states and 471 transitions. Second operand has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-25 17:04:40,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:04:40,046 INFO L93 Difference]: Finished difference Result 734 states and 891 transitions. [2022-11-25 17:04:40,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 17:04:40,047 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 118 [2022-11-25 17:04:40,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:04:40,051 INFO L225 Difference]: With dead ends: 734 [2022-11-25 17:04:40,051 INFO L226 Difference]: Without dead ends: 394 [2022-11-25 17:04:40,052 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-25 17:04:40,053 INFO L413 NwaCegarLoop]: 216 mSDtfsCounter, 2 mSDsluCounter, 428 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 644 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 17:04:40,055 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 644 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 17:04:40,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 394 states. [2022-11-25 17:04:40,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 394 to 394. [2022-11-25 17:04:40,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 394 states, 387 states have (on average 1.2093023255813953) internal successors, (468), 389 states have internal predecessors, (468), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2022-11-25 17:04:40,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 475 transitions. [2022-11-25 17:04:40,092 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 475 transitions. Word has length 118 [2022-11-25 17:04:40,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:04:40,093 INFO L495 AbstractCegarLoop]: Abstraction has 394 states and 475 transitions. [2022-11-25 17:04:40,093 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-25 17:04:40,093 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 475 transitions. [2022-11-25 17:04:40,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2022-11-25 17:04:40,095 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:04:40,096 INFO L195 NwaCegarLoop]: trace histogram [2, 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] [2022-11-25 17:04:40,118 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fb42a68-2218-4a15-8c39-719c6a42fad1/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-25 17:04:40,296 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fb42a68-2218-4a15-8c39-719c6a42fad1/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-25 17:04:40,297 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:04:40,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:04:40,297 INFO L85 PathProgramCache]: Analyzing trace with hash 1203299854, now seen corresponding path program 1 times [2022-11-25 17:04:40,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:04:40,298 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017981796] [2022-11-25 17:04:40,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:04:40,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:04:40,386 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-25 17:04:40,386 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [429509993] [2022-11-25 17:04:40,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:04:40,387 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:04:40,387 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fb42a68-2218-4a15-8c39-719c6a42fad1/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:04:40,388 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fb42a68-2218-4a15-8c39-719c6a42fad1/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:04:40,410 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fb42a68-2218-4a15-8c39-719c6a42fad1/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-25 17:05:05,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:05:05,569 INFO L263 TraceCheckSpWp]: Trace formula consists of 818 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-25 17:05:05,572 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:05:05,660 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-25 17:05:05,660 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:05:05,827 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-25 17:05:05,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:05:05,828 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017981796] [2022-11-25 17:05:05,828 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-25 17:05:05,828 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [429509993] [2022-11-25 17:05:05,828 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [429509993] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 17:05:05,829 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 17:05:05,829 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2022-11-25 17:05:05,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842661739] [2022-11-25 17:05:05,829 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 17:05:05,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-25 17:05:05,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:05:05,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-25 17:05:05,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-25 17:05:05,831 INFO L87 Difference]: Start difference. First operand 394 states and 475 transitions. Second operand has 8 states, 8 states have (on average 15.125) internal successors, (121), 8 states have internal predecessors, (121), 1 states have call successors, (2), 1 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-25 17:05:06,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:05:06,095 INFO L93 Difference]: Finished difference Result 748 states and 913 transitions. [2022-11-25 17:05:06,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-25 17:05:06,096 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 15.125) internal successors, (121), 8 states have internal predecessors, (121), 1 states have call successors, (2), 1 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 120 [2022-11-25 17:05:06,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:05:06,102 INFO L225 Difference]: With dead ends: 748 [2022-11-25 17:05:06,102 INFO L226 Difference]: Without dead ends: 403 [2022-11-25 17:05:06,108 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 232 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=53, Invalid=79, Unknown=0, NotChecked=0, Total=132 [2022-11-25 17:05:06,109 INFO L413 NwaCegarLoop]: 215 mSDtfsCounter, 12 mSDsluCounter, 426 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 641 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 17:05:06,109 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 641 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 17:05:06,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 403 states. [2022-11-25 17:05:06,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 403 to 403. [2022-11-25 17:05:06,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 403 states, 395 states have (on average 1.2151898734177216) internal successors, (480), 397 states have internal predecessors, (480), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2022-11-25 17:05:06,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 488 transitions. [2022-11-25 17:05:06,147 INFO L78 Accepts]: Start accepts. Automaton has 403 states and 488 transitions. Word has length 120 [2022-11-25 17:05:06,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:05:06,147 INFO L495 AbstractCegarLoop]: Abstraction has 403 states and 488 transitions. [2022-11-25 17:05:06,148 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.125) internal successors, (121), 8 states have internal predecessors, (121), 1 states have call successors, (2), 1 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-25 17:05:06,148 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 488 transitions. [2022-11-25 17:05:06,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-11-25 17:05:06,150 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:05:06,151 INFO L195 NwaCegarLoop]: trace histogram [6, 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] [2022-11-25 17:05:06,173 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fb42a68-2218-4a15-8c39-719c6a42fad1/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-25 17:05:06,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fb42a68-2218-4a15-8c39-719c6a42fad1/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-25 17:05:06,363 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:05:06,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:05:06,363 INFO L85 PathProgramCache]: Analyzing trace with hash 1636960044, now seen corresponding path program 2 times [2022-11-25 17:05:06,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:05:06,364 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717182552] [2022-11-25 17:05:06,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:05:06,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:05:06,478 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-25 17:05:06,478 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2122695987] [2022-11-25 17:05:06,479 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-25 17:05:06,479 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:05:06,479 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fb42a68-2218-4a15-8c39-719c6a42fad1/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:05:06,481 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fb42a68-2218-4a15-8c39-719c6a42fad1/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:05:06,494 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fb42a68-2218-4a15-8c39-719c6a42fad1/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-25 17:05:40,729 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-25 17:05:40,729 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 17:05:40,745 INFO L263 TraceCheckSpWp]: Trace formula consists of 878 conjuncts, 25 conjunts are in the unsatisfiable core [2022-11-25 17:05:40,749 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:05:40,825 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 20 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-25 17:05:40,826 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:05:41,138 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 2 proven. 20 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-25 17:05:41,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:05:41,140 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717182552] [2022-11-25 17:05:41,140 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-25 17:05:41,140 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2122695987] [2022-11-25 17:05:41,140 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2122695987] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 17:05:41,141 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 17:05:41,141 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 11 [2022-11-25 17:05:41,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410072708] [2022-11-25 17:05:41,141 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 17:05:41,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-25 17:05:41,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:05:41,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-25 17:05:41,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2022-11-25 17:05:41,144 INFO L87 Difference]: Start difference. First operand 403 states and 488 transitions. Second operand has 11 states, 11 states have (on average 11.636363636363637) internal successors, (128), 11 states have internal predecessors, (128), 2 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-25 17:05:41,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:05:41,549 INFO L93 Difference]: Finished difference Result 759 states and 926 transitions. [2022-11-25 17:05:41,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-25 17:05:41,551 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 11.636363636363637) internal successors, (128), 11 states have internal predecessors, (128), 2 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) Word has length 124 [2022-11-25 17:05:41,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:05:41,553 INFO L225 Difference]: With dead ends: 759 [2022-11-25 17:05:41,554 INFO L226 Difference]: Without dead ends: 409 [2022-11-25 17:05:41,555 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 237 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=93, Invalid=179, Unknown=0, NotChecked=0, Total=272 [2022-11-25 17:05:41,556 INFO L413 NwaCegarLoop]: 215 mSDtfsCounter, 13 mSDsluCounter, 1042 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 1257 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-25 17:05:41,556 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 1257 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-25 17:05:41,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 409 states. [2022-11-25 17:05:41,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 409 to 407. [2022-11-25 17:05:41,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 407 states, 399 states have (on average 1.218045112781955) internal successors, (486), 401 states have internal predecessors, (486), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2022-11-25 17:05:41,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 407 states to 407 states and 493 transitions. [2022-11-25 17:05:41,584 INFO L78 Accepts]: Start accepts. Automaton has 407 states and 493 transitions. Word has length 124 [2022-11-25 17:05:41,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:05:41,584 INFO L495 AbstractCegarLoop]: Abstraction has 407 states and 493 transitions. [2022-11-25 17:05:41,584 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.636363636363637) internal successors, (128), 11 states have internal predecessors, (128), 2 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-25 17:05:41,585 INFO L276 IsEmpty]: Start isEmpty. Operand 407 states and 493 transitions. [2022-11-25 17:05:41,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-11-25 17:05:41,587 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:05:41,587 INFO L195 NwaCegarLoop]: trace histogram [10, 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] [2022-11-25 17:05:41,621 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fb42a68-2218-4a15-8c39-719c6a42fad1/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-25 17:05:41,787 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fb42a68-2218-4a15-8c39-719c6a42fad1/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-25 17:05:41,788 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:05:41,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:05:41,788 INFO L85 PathProgramCache]: Analyzing trace with hash 1775467180, now seen corresponding path program 3 times [2022-11-25 17:05:41,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:05:41,788 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1398462122] [2022-11-25 17:05:41,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:05:41,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:05:41,888 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-25 17:05:41,888 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [942140270] [2022-11-25 17:05:41,888 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-25 17:05:41,889 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:05:41,889 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fb42a68-2218-4a15-8c39-719c6a42fad1/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:05:41,890 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fb42a68-2218-4a15-8c39-719c6a42fad1/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:05:41,958 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fb42a68-2218-4a15-8c39-719c6a42fad1/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process