./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test6-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e7fbc69 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f5a0437-d28d-41c4-a480-1ee77d8a1eb3/bin/uautomizer-QkZJyEgLgS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f5a0437-d28d-41c4-a480-1ee77d8a1eb3/bin/uautomizer-QkZJyEgLgS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f5a0437-d28d-41c4-a480-1ee77d8a1eb3/bin/uautomizer-QkZJyEgLgS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f5a0437-d28d-41c4-a480-1ee77d8a1eb3/bin/uautomizer-QkZJyEgLgS/config/AutomizerReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test6-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f5a0437-d28d-41c4-a480-1ee77d8a1eb3/bin/uautomizer-QkZJyEgLgS/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f5a0437-d28d-41c4-a480-1ee77d8a1eb3/bin/uautomizer-QkZJyEgLgS --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 bb48026e7f870ff561a4cdd394c24cb5edb1d0f2fc8e8ef2bffe0b7b8438fda4 --- 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-4e7fbc6 [2022-11-23 02:11:39,173 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 02:11:39,175 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 02:11:39,205 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 02:11:39,205 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 02:11:39,206 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 02:11:39,208 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 02:11:39,209 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 02:11:39,211 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 02:11:39,212 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 02:11:39,213 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 02:11:39,214 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 02:11:39,215 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 02:11:39,216 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 02:11:39,217 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 02:11:39,218 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 02:11:39,219 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 02:11:39,220 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 02:11:39,222 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 02:11:39,223 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 02:11:39,225 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 02:11:39,226 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 02:11:39,227 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 02:11:39,228 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 02:11:39,232 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 02:11:39,232 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 02:11:39,232 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 02:11:39,233 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 02:11:39,234 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 02:11:39,235 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 02:11:39,235 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 02:11:39,236 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 02:11:39,237 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 02:11:39,237 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 02:11:39,238 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 02:11:39,239 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 02:11:39,239 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 02:11:39,240 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 02:11:39,240 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 02:11:39,241 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 02:11:39,242 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 02:11:39,243 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f5a0437-d28d-41c4-a480-1ee77d8a1eb3/bin/uautomizer-QkZJyEgLgS/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-23 02:11:39,266 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 02:11:39,266 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 02:11:39,267 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 02:11:39,267 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 02:11:39,268 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 02:11:39,268 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 02:11:39,269 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-23 02:11:39,269 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-23 02:11:39,269 INFO L138 SettingsManager]: * Use SBE=true [2022-11-23 02:11:39,270 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 02:11:39,270 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-23 02:11:39,270 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 02:11:39,270 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-23 02:11:39,271 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 02:11:39,271 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 02:11:39,271 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 02:11:39,271 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 02:11:39,271 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-23 02:11:39,272 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 02:11:39,272 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 02:11:39,272 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 02:11:39,272 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 02:11:39,273 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-23 02:11:39,273 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 02:11:39,273 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 02:11:39,273 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 02:11:39,274 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 02:11:39,274 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 02:11:39,274 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-23 02:11:39,274 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 02:11:39,275 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-23 02:11:39,275 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 02:11:39,275 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-23 02:11:39,275 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-23 02:11:39,276 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_6f5a0437-d28d-41c4-a480-1ee77d8a1eb3/bin/uautomizer-QkZJyEgLgS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f5a0437-d28d-41c4-a480-1ee77d8a1eb3/bin/uautomizer-QkZJyEgLgS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bb48026e7f870ff561a4cdd394c24cb5edb1d0f2fc8e8ef2bffe0b7b8438fda4 [2022-11-23 02:11:39,498 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 02:11:39,529 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 02:11:39,531 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 02:11:39,533 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 02:11:39,533 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 02:11:39,534 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f5a0437-d28d-41c4-a480-1ee77d8a1eb3/bin/uautomizer-QkZJyEgLgS/../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test6-2.i [2022-11-23 02:11:42,680 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 02:11:43,010 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 02:11:43,010 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f5a0437-d28d-41c4-a480-1ee77d8a1eb3/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test6-2.i [2022-11-23 02:11:43,028 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f5a0437-d28d-41c4-a480-1ee77d8a1eb3/bin/uautomizer-QkZJyEgLgS/data/6ec1429ce/71a00b598fb940b69d41daf1ca196224/FLAGbfe180d66 [2022-11-23 02:11:43,041 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f5a0437-d28d-41c4-a480-1ee77d8a1eb3/bin/uautomizer-QkZJyEgLgS/data/6ec1429ce/71a00b598fb940b69d41daf1ca196224 [2022-11-23 02:11:43,043 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 02:11:43,045 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 02:11:43,046 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 02:11:43,046 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 02:11:43,050 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 02:11:43,051 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:11:43" (1/1) ... [2022-11-23 02:11:43,052 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4fe923fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:11:43, skipping insertion in model container [2022-11-23 02:11:43,052 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:11:43" (1/1) ... [2022-11-23 02:11:43,059 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 02:11:43,131 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 02:11:43,832 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_6f5a0437-d28d-41c4-a480-1ee77d8a1eb3/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test6-2.i[44118,44131] [2022-11-23 02:11:43,861 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f5a0437-d28d-41c4-a480-1ee77d8a1eb3/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test6-2.i[44660,44673] [2022-11-23 02:11:44,004 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_6f5a0437-d28d-41c4-a480-1ee77d8a1eb3/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test6-2.i[56247,56260] [2022-11-23 02:11:44,005 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_6f5a0437-d28d-41c4-a480-1ee77d8a1eb3/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test6-2.i[56368,56381] [2022-11-23 02:11:44,022 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 02:11:44,032 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 02:11:44,088 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_6f5a0437-d28d-41c4-a480-1ee77d8a1eb3/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test6-2.i[44118,44131] [2022-11-23 02:11:44,090 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_6f5a0437-d28d-41c4-a480-1ee77d8a1eb3/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test6-2.i[44660,44673] [2022-11-23 02:11:44,184 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_6f5a0437-d28d-41c4-a480-1ee77d8a1eb3/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test6-2.i[56247,56260] [2022-11-23 02:11:44,184 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_6f5a0437-d28d-41c4-a480-1ee77d8a1eb3/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test6-2.i[56368,56381] [2022-11-23 02:11:44,210 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 02:11:44,298 INFO L208 MainTranslator]: Completed translation [2022-11-23 02:11:44,299 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:11:44 WrapperNode [2022-11-23 02:11:44,299 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 02:11:44,303 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 02:11:44,303 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 02:11:44,303 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 02:11:44,310 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:11:44" (1/1) ... [2022-11-23 02:11:44,367 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:11:44" (1/1) ... [2022-11-23 02:11:44,482 INFO L138 Inliner]: procedures = 282, calls = 347, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 1195 [2022-11-23 02:11:44,482 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 02:11:44,483 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 02:11:44,483 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 02:11:44,483 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 02:11:44,499 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:11:44" (1/1) ... [2022-11-23 02:11:44,499 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:11:44" (1/1) ... [2022-11-23 02:11:44,512 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:11:44" (1/1) ... [2022-11-23 02:11:44,519 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:11:44" (1/1) ... [2022-11-23 02:11:44,606 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:11:44" (1/1) ... [2022-11-23 02:11:44,618 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:11:44" (1/1) ... [2022-11-23 02:11:44,640 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:11:44" (1/1) ... [2022-11-23 02:11:44,644 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:11:44" (1/1) ... [2022-11-23 02:11:44,665 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 02:11:44,672 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 02:11:44,673 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 02:11:44,673 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 02:11:44,674 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:11:44" (1/1) ... [2022-11-23 02:11:44,682 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 02:11:44,692 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f5a0437-d28d-41c4-a480-1ee77d8a1eb3/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 02:11:44,712 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f5a0437-d28d-41c4-a480-1ee77d8a1eb3/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 02:11:44,738 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f5a0437-d28d-41c4-a480-1ee77d8a1eb3/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 02:11:44,761 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-23 02:11:44,761 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2022-11-23 02:11:44,761 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-23 02:11:44,761 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-23 02:11:44,762 INFO L130 BoogieDeclarations]: Found specification of procedure alt_bzero [2022-11-23 02:11:44,762 INFO L138 BoogieDeclarations]: Found implementation of procedure alt_bzero [2022-11-23 02:11:44,762 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-23 02:11:44,762 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-23 02:11:44,762 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-23 02:11:44,763 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-23 02:11:44,763 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-23 02:11:44,763 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 02:11:44,763 INFO L130 BoogieDeclarations]: Found specification of procedure alt_malloc [2022-11-23 02:11:44,763 INFO L138 BoogieDeclarations]: Found implementation of procedure alt_malloc [2022-11-23 02:11:44,763 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-23 02:11:44,764 INFO L130 BoogieDeclarations]: Found specification of procedure alt_free [2022-11-23 02:11:44,764 INFO L138 BoogieDeclarations]: Found implementation of procedure alt_free [2022-11-23 02:11:44,764 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 02:11:44,765 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 02:11:44,765 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 02:11:45,105 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 02:11:45,107 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 02:11:46,633 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 02:11:46,641 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 02:11:46,641 INFO L300 CfgBuilder]: Removed 72 assume(true) statements. [2022-11-23 02:11:46,645 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:11:46 BoogieIcfgContainer [2022-11-23 02:11:46,645 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 02:11:46,647 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 02:11:46,647 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 02:11:46,650 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 02:11:46,651 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:11:43" (1/3) ... [2022-11-23 02:11:46,653 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78526e82 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:11:46, skipping insertion in model container [2022-11-23 02:11:46,653 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:11:44" (2/3) ... [2022-11-23 02:11:46,654 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78526e82 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:11:46, skipping insertion in model container [2022-11-23 02:11:46,654 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:11:46" (3/3) ... [2022-11-23 02:11:46,655 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_SAX_test6-2.i [2022-11-23 02:11:46,673 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 02:11:46,674 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2022-11-23 02:11:46,738 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 02:11:46,745 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;@6c5a2b0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 02:11:46,745 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-11-23 02:11:46,751 INFO L276 IsEmpty]: Start isEmpty. Operand has 256 states, 232 states have (on average 1.6379310344827587) internal successors, (380), 236 states have internal predecessors, (380), 16 states have call successors, (16), 4 states have call predecessors, (16), 4 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2022-11-23 02:11:46,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-23 02:11:46,760 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:11:46,761 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:11:46,761 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-23 02:11:46,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:11:46,770 INFO L85 PathProgramCache]: Analyzing trace with hash -927886968, now seen corresponding path program 1 times [2022-11-23 02:11:46,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:11:46,781 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614097426] [2022-11-23 02:11:46,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:11:46,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:11:46,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:11:47,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:11:47,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:11:47,027 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1614097426] [2022-11-23 02:11:47,028 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1614097426] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:11:47,028 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:11:47,029 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 02:11:47,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437325105] [2022-11-23 02:11:47,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:11:47,035 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-23 02:11:47,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:11:47,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-23 02:11:47,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-23 02:11:47,086 INFO L87 Difference]: Start difference. First operand has 256 states, 232 states have (on average 1.6379310344827587) internal successors, (380), 236 states have internal predecessors, (380), 16 states have call successors, (16), 4 states have call predecessors, (16), 4 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) 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) [2022-11-23 02:11:47,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:11:47,176 INFO L93 Difference]: Finished difference Result 507 states and 830 transitions. [2022-11-23 02:11:47,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-23 02:11:47,179 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 [2022-11-23 02:11:47,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:11:47,195 INFO L225 Difference]: With dead ends: 507 [2022-11-23 02:11:47,195 INFO L226 Difference]: Without dead ends: 249 [2022-11-23 02:11:47,204 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 [2022-11-23 02:11:47,210 INFO L413 NwaCegarLoop]: 328 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, 328 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 [2022-11-23 02:11:47,212 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 328 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 02:11:47,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2022-11-23 02:11:47,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 249. [2022-11-23 02:11:47,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 249 states, 226 states have (on average 1.3008849557522124) internal successors, (294), 230 states have internal predecessors, (294), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2022-11-23 02:11:47,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 324 transitions. [2022-11-23 02:11:47,292 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 324 transitions. Word has length 8 [2022-11-23 02:11:47,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:11:47,293 INFO L495 AbstractCegarLoop]: Abstraction has 249 states and 324 transitions. [2022-11-23 02:11:47,293 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) [2022-11-23 02:11:47,293 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 324 transitions. [2022-11-23 02:11:47,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-23 02:11:47,294 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:11:47,294 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:11:47,294 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 02:11:47,294 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-23 02:11:47,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:11:47,295 INFO L85 PathProgramCache]: Analyzing trace with hash 1603506083, now seen corresponding path program 1 times [2022-11-23 02:11:47,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:11:47,295 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116866757] [2022-11-23 02:11:47,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:11:47,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:11:47,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:11:47,556 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:11:47,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:11:47,559 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1116866757] [2022-11-23 02:11:47,560 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1116866757] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:11:47,560 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:11:47,560 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 02:11:47,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473573814] [2022-11-23 02:11:47,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:11:47,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 02:11:47,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:11:47,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 02:11:47,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 02:11:47,567 INFO L87 Difference]: Start difference. First operand 249 states and 324 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) [2022-11-23 02:11:48,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:11:48,201 INFO L93 Difference]: Finished difference Result 545 states and 715 transitions. [2022-11-23 02:11:48,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 02:11:48,202 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 [2022-11-23 02:11:48,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:11:48,204 INFO L225 Difference]: With dead ends: 545 [2022-11-23 02:11:48,204 INFO L226 Difference]: Without dead ends: 403 [2022-11-23 02:11:48,205 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 [2022-11-23 02:11:48,206 INFO L413 NwaCegarLoop]: 318 mSDtfsCounter, 180 mSDsluCounter, 543 mSDsCounter, 0 mSdLazyCounter, 204 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 187 SdHoareTripleChecker+Valid, 861 SdHoareTripleChecker+Invalid, 206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-23 02:11:48,206 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [187 Valid, 861 Invalid, 206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 204 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-23 02:11:48,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 403 states. [2022-11-23 02:11:48,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 403 to 251. [2022-11-23 02:11:48,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 251 states, 228 states have (on average 1.2982456140350878) internal successors, (296), 232 states have internal predecessors, (296), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2022-11-23 02:11:48,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 326 transitions. [2022-11-23 02:11:48,238 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 326 transitions. Word has length 10 [2022-11-23 02:11:48,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:11:48,239 INFO L495 AbstractCegarLoop]: Abstraction has 251 states and 326 transitions. [2022-11-23 02:11:48,239 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) [2022-11-23 02:11:48,246 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 326 transitions. [2022-11-23 02:11:48,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-11-23 02:11:48,248 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:11:48,248 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:11:48,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-23 02:11:48,248 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-23 02:11:48,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:11:48,249 INFO L85 PathProgramCache]: Analyzing trace with hash -177796585, now seen corresponding path program 1 times [2022-11-23 02:11:48,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:11:48,250 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160655927] [2022-11-23 02:11:48,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:11:48,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:11:48,330 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-23 02:11:48,333 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1027007128] [2022-11-23 02:11:48,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:11:48,334 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:11:48,334 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f5a0437-d28d-41c4-a480-1ee77d8a1eb3/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 02:11:48,337 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f5a0437-d28d-41c4-a480-1ee77d8a1eb3/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 02:11:48,362 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f5a0437-d28d-41c4-a480-1ee77d8a1eb3/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-23 02:11:48,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:11:48,633 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-23 02:11:48,642 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 02:11:48,703 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:11:48,704 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 02:11:48,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:11:48,704 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160655927] [2022-11-23 02:11:48,705 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-23 02:11:48,705 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1027007128] [2022-11-23 02:11:48,705 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1027007128] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:11:48,705 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:11:48,706 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 02:11:48,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281754494] [2022-11-23 02:11:48,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:11:48,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 02:11:48,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:11:48,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 02:11:48,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 02:11:48,708 INFO L87 Difference]: Start difference. First operand 251 states and 326 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:11:48,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:11:48,806 INFO L93 Difference]: Finished difference Result 519 states and 679 transitions. [2022-11-23 02:11:48,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 02:11:48,807 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2022-11-23 02:11:48,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:11:48,809 INFO L225 Difference]: With dead ends: 519 [2022-11-23 02:11:48,809 INFO L226 Difference]: Without dead ends: 272 [2022-11-23 02:11:48,811 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 02:11:48,814 INFO L413 NwaCegarLoop]: 304 mSDtfsCounter, 9 mSDsluCounter, 289 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 593 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 [2022-11-23 02:11:48,815 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 593 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 02:11:48,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2022-11-23 02:11:48,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 271. [2022-11-23 02:11:48,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 271 states, 248 states have (on average 1.2741935483870968) internal successors, (316), 252 states have internal predecessors, (316), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2022-11-23 02:11:48,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 346 transitions. [2022-11-23 02:11:48,848 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 346 transitions. Word has length 47 [2022-11-23 02:11:48,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:11:48,850 INFO L495 AbstractCegarLoop]: Abstraction has 271 states and 346 transitions. [2022-11-23 02:11:48,850 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:11:48,851 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 346 transitions. [2022-11-23 02:11:48,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-11-23 02:11:48,855 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:11:48,855 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:11:48,866 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f5a0437-d28d-41c4-a480-1ee77d8a1eb3/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-23 02:11:49,061 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f5a0437-d28d-41c4-a480-1ee77d8a1eb3/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:11:49,062 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-23 02:11:49,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:11:49,062 INFO L85 PathProgramCache]: Analyzing trace with hash -318345195, now seen corresponding path program 1 times [2022-11-23 02:11:49,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:11:49,063 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055753756] [2022-11-23 02:11:49,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:11:49,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:11:49,112 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-23 02:11:49,122 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [565066476] [2022-11-23 02:11:49,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:11:49,123 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:11:49,123 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f5a0437-d28d-41c4-a480-1ee77d8a1eb3/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 02:11:49,127 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f5a0437-d28d-41c4-a480-1ee77d8a1eb3/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 02:11:49,149 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f5a0437-d28d-41c4-a480-1ee77d8a1eb3/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-23 02:11:49,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:11:49,370 INFO L263 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-23 02:11:49,373 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 02:11:49,417 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:11:49,417 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 02:11:49,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:11:49,417 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1055753756] [2022-11-23 02:11:49,418 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-23 02:11:49,418 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [565066476] [2022-11-23 02:11:49,418 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [565066476] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:11:49,418 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:11:49,418 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 02:11:49,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919057781] [2022-11-23 02:11:49,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:11:49,419 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 02:11:49,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:11:49,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 02:11:49,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 02:11:49,420 INFO L87 Difference]: Start difference. First operand 271 states and 346 transitions. Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:11:49,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:11:49,526 INFO L93 Difference]: Finished difference Result 531 states and 681 transitions. [2022-11-23 02:11:49,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 02:11:49,527 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2022-11-23 02:11:49,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:11:49,528 INFO L225 Difference]: With dead ends: 531 [2022-11-23 02:11:49,529 INFO L226 Difference]: Without dead ends: 264 [2022-11-23 02:11:49,529 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-23 02:11:49,530 INFO L413 NwaCegarLoop]: 305 mSDtfsCounter, 268 mSDsluCounter, 339 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 282 SdHoareTripleChecker+Valid, 644 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 [2022-11-23 02:11:49,530 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [282 Valid, 644 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 02:11:49,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2022-11-23 02:11:49,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 257. [2022-11-23 02:11:49,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 257 states, 234 states have (on average 1.2606837606837606) internal successors, (295), 238 states have internal predecessors, (295), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2022-11-23 02:11:49,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 325 transitions. [2022-11-23 02:11:49,542 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 325 transitions. Word has length 47 [2022-11-23 02:11:49,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:11:49,542 INFO L495 AbstractCegarLoop]: Abstraction has 257 states and 325 transitions. [2022-11-23 02:11:49,543 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:11:49,543 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 325 transitions. [2022-11-23 02:11:49,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-11-23 02:11:49,544 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:11:49,544 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:11:49,555 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f5a0437-d28d-41c4-a480-1ee77d8a1eb3/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-23 02:11:49,750 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f5a0437-d28d-41c4-a480-1ee77d8a1eb3/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:11:49,751 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-23 02:11:49,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:11:49,751 INFO L85 PathProgramCache]: Analyzing trace with hash 1111404323, now seen corresponding path program 1 times [2022-11-23 02:11:49,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:11:49,752 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504763637] [2022-11-23 02:11:49,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:11:49,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:11:49,791 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-23 02:11:49,791 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1084653483] [2022-11-23 02:11:49,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:11:49,792 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:11:49,792 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f5a0437-d28d-41c4-a480-1ee77d8a1eb3/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 02:11:49,793 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f5a0437-d28d-41c4-a480-1ee77d8a1eb3/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 02:11:49,822 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f5a0437-d28d-41c4-a480-1ee77d8a1eb3/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-23 02:11:50,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:11:50,845 INFO L263 TraceCheckSpWp]: Trace formula consists of 268 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-23 02:11:50,849 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 02:11:50,919 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:11:50,919 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 02:11:50,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:11:50,920 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1504763637] [2022-11-23 02:11:50,920 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-23 02:11:50,920 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1084653483] [2022-11-23 02:11:50,920 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1084653483] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:11:50,920 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:11:50,921 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-23 02:11:50,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322234398] [2022-11-23 02:11:50,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:11:50,921 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-23 02:11:50,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:11:50,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-23 02:11:50,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-23 02:11:50,923 INFO L87 Difference]: Start difference. First operand 257 states and 325 transitions. Second operand has 8 states, 8 states have (on average 5.625) internal successors, (45), 6 states have internal predecessors, (45), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:11:51,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:11:51,492 INFO L93 Difference]: Finished difference Result 270 states and 338 transitions. [2022-11-23 02:11:51,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-23 02:11:51,494 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.625) internal successors, (45), 6 states have internal predecessors, (45), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2022-11-23 02:11:51,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:11:51,496 INFO L225 Difference]: With dead ends: 270 [2022-11-23 02:11:51,496 INFO L226 Difference]: Without dead ends: 268 [2022-11-23 02:11:51,496 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-11-23 02:11:51,497 INFO L413 NwaCegarLoop]: 283 mSDtfsCounter, 490 mSDsluCounter, 1233 mSDsCounter, 0 mSdLazyCounter, 215 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 492 SdHoareTripleChecker+Valid, 1516 SdHoareTripleChecker+Invalid, 242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 215 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-23 02:11:51,497 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [492 Valid, 1516 Invalid, 242 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 215 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-23 02:11:51,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2022-11-23 02:11:51,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 267. [2022-11-23 02:11:51,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 267 states, 241 states have (on average 1.2572614107883817) internal successors, (303), 246 states have internal predecessors, (303), 16 states have call successors, (16), 6 states have call predecessors, (16), 6 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2022-11-23 02:11:51,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 335 transitions. [2022-11-23 02:11:51,514 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 335 transitions. Word has length 47 [2022-11-23 02:11:51,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:11:51,514 INFO L495 AbstractCegarLoop]: Abstraction has 267 states and 335 transitions. [2022-11-23 02:11:51,514 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.625) internal successors, (45), 6 states have internal predecessors, (45), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:11:51,515 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 335 transitions. [2022-11-23 02:11:51,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-11-23 02:11:51,519 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:11:51,520 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:11:51,532 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f5a0437-d28d-41c4-a480-1ee77d8a1eb3/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-23 02:11:51,726 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f5a0437-d28d-41c4-a480-1ee77d8a1eb3/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:11:51,727 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-23 02:11:51,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:11:51,727 INFO L85 PathProgramCache]: Analyzing trace with hash 98081523, now seen corresponding path program 1 times [2022-11-23 02:11:51,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:11:51,727 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862607050] [2022-11-23 02:11:51,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:11:51,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:11:51,853 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-23 02:11:51,853 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1641264596] [2022-11-23 02:11:51,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:11:51,853 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:11:51,854 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f5a0437-d28d-41c4-a480-1ee77d8a1eb3/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 02:11:51,859 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f5a0437-d28d-41c4-a480-1ee77d8a1eb3/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 02:11:51,883 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f5a0437-d28d-41c4-a480-1ee77d8a1eb3/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-23 02:11:52,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:11:52,558 INFO L263 TraceCheckSpWp]: Trace formula consists of 1597 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-23 02:11:52,562 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 02:11:52,571 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:11:52,571 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 02:11:52,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:11:52,572 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862607050] [2022-11-23 02:11:52,572 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-23 02:11:52,572 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1641264596] [2022-11-23 02:11:52,572 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1641264596] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:11:52,572 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:11:52,573 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 02:11:52,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675688070] [2022-11-23 02:11:52,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:11:52,573 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 02:11:52,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:11:52,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 02:11:52,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 02:11:52,575 INFO L87 Difference]: Start difference. First operand 267 states and 335 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:11:52,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:11:52,599 INFO L93 Difference]: Finished difference Result 531 states and 668 transitions. [2022-11-23 02:11:52,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 02:11:52,600 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2022-11-23 02:11:52,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:11:52,601 INFO L225 Difference]: With dead ends: 531 [2022-11-23 02:11:52,602 INFO L226 Difference]: Without dead ends: 268 [2022-11-23 02:11:52,602 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 02:11:52,603 INFO L413 NwaCegarLoop]: 316 mSDtfsCounter, 0 mSDsluCounter, 311 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 627 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 02:11:52,603 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 627 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 02:11:52,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2022-11-23 02:11:52,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 268. [2022-11-23 02:11:52,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 268 states, 242 states have (on average 1.256198347107438) internal successors, (304), 247 states have internal predecessors, (304), 16 states have call successors, (16), 6 states have call predecessors, (16), 6 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2022-11-23 02:11:52,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 336 transitions. [2022-11-23 02:11:52,615 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 336 transitions. Word has length 58 [2022-11-23 02:11:52,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:11:52,616 INFO L495 AbstractCegarLoop]: Abstraction has 268 states and 336 transitions. [2022-11-23 02:11:52,616 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:11:52,617 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 336 transitions. [2022-11-23 02:11:52,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-11-23 02:11:52,618 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:11:52,618 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:11:52,632 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f5a0437-d28d-41c4-a480-1ee77d8a1eb3/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-23 02:11:52,832 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f5a0437-d28d-41c4-a480-1ee77d8a1eb3/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:11:52,832 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-23 02:11:52,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:11:52,833 INFO L85 PathProgramCache]: Analyzing trace with hash 491108533, now seen corresponding path program 1 times [2022-11-23 02:11:52,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:11:52,833 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1978930692] [2022-11-23 02:11:52,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:11:52,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:11:52,948 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-23 02:11:52,948 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [569484795] [2022-11-23 02:11:52,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:11:52,948 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:11:52,949 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f5a0437-d28d-41c4-a480-1ee77d8a1eb3/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 02:11:52,950 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f5a0437-d28d-41c4-a480-1ee77d8a1eb3/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 02:11:52,953 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f5a0437-d28d-41c4-a480-1ee77d8a1eb3/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-23 02:11:53,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:11:53,786 INFO L263 TraceCheckSpWp]: Trace formula consists of 1604 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-23 02:11:53,790 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 02:11:53,983 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:11:53,983 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 02:11:53,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:11:53,984 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1978930692] [2022-11-23 02:11:53,984 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-23 02:11:53,984 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [569484795] [2022-11-23 02:11:53,984 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [569484795] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:11:53,984 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:11:53,984 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 02:11:53,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437942207] [2022-11-23 02:11:53,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:11:53,985 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 02:11:53,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:11:53,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 02:11:53,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 02:11:53,986 INFO L87 Difference]: Start difference. First operand 268 states and 336 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:11:54,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:11:54,146 INFO L93 Difference]: Finished difference Result 686 states and 867 transitions. [2022-11-23 02:11:54,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 02:11:54,147 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2022-11-23 02:11:54,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:11:54,149 INFO L225 Difference]: With dead ends: 686 [2022-11-23 02:11:54,149 INFO L226 Difference]: Without dead ends: 422 [2022-11-23 02:11:54,150 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 02:11:54,151 INFO L413 NwaCegarLoop]: 360 mSDtfsCounter, 142 mSDsluCounter, 268 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 628 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 02:11:54,151 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [153 Valid, 628 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 02:11:54,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 422 states. [2022-11-23 02:11:54,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 422 to 383. [2022-11-23 02:11:54,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 383 states, 354 states have (on average 1.2542372881355932) internal successors, (444), 359 states have internal predecessors, (444), 19 states have call successors, (19), 6 states have call predecessors, (19), 6 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2022-11-23 02:11:54,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 482 transitions. [2022-11-23 02:11:54,170 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 482 transitions. Word has length 58 [2022-11-23 02:11:54,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:11:54,170 INFO L495 AbstractCegarLoop]: Abstraction has 383 states and 482 transitions. [2022-11-23 02:11:54,171 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:11:54,171 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 482 transitions. [2022-11-23 02:11:54,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-11-23 02:11:54,172 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:11:54,172 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] [2022-11-23 02:11:54,182 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f5a0437-d28d-41c4-a480-1ee77d8a1eb3/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-23 02:11:54,382 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f5a0437-d28d-41c4-a480-1ee77d8a1eb3/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-23 02:11:54,382 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-23 02:11:54,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:11:54,383 INFO L85 PathProgramCache]: Analyzing trace with hash -1048240331, now seen corresponding path program 1 times [2022-11-23 02:11:54,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:11:54,383 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580161794] [2022-11-23 02:11:54,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:11:54,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:11:54,438 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-23 02:11:54,442 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [744804151] [2022-11-23 02:11:54,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:11:54,443 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:11:54,443 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f5a0437-d28d-41c4-a480-1ee77d8a1eb3/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 02:11:54,444 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f5a0437-d28d-41c4-a480-1ee77d8a1eb3/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 02:11:54,466 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f5a0437-d28d-41c4-a480-1ee77d8a1eb3/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-23 02:11:54,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:11:54,929 INFO L263 TraceCheckSpWp]: Trace formula consists of 509 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-23 02:11:54,935 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 02:11:55,125 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:11:55,125 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 02:11:55,309 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:11:55,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:11:55,310 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580161794] [2022-11-23 02:11:55,310 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-23 02:11:55,310 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [744804151] [2022-11-23 02:11:55,311 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [744804151] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-23 02:11:55,311 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 02:11:55,311 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 9 [2022-11-23 02:11:55,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644251666] [2022-11-23 02:11:55,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:11:55,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-23 02:11:55,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:11:55,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-23 02:11:55,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-11-23 02:11:55,313 INFO L87 Difference]: Start difference. First operand 383 states and 482 transitions. Second operand has 7 states, 7 states have (on average 8.0) internal successors, (56), 6 states have internal predecessors, (56), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-23 02:11:55,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:11:55,544 INFO L93 Difference]: Finished difference Result 1420 states and 1840 transitions. [2022-11-23 02:11:55,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 02:11:55,545 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.0) internal successors, (56), 6 states have internal predecessors, (56), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 62 [2022-11-23 02:11:55,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:11:55,552 INFO L225 Difference]: With dead ends: 1420 [2022-11-23 02:11:55,552 INFO L226 Difference]: Without dead ends: 1086 [2022-11-23 02:11:55,553 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 111 SyntacticMatches, 4 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-11-23 02:11:55,554 INFO L413 NwaCegarLoop]: 392 mSDtfsCounter, 1097 mSDsluCounter, 1041 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1097 SdHoareTripleChecker+Valid, 1433 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 02:11:55,555 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1097 Valid, 1433 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 02:11:55,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1086 states. [2022-11-23 02:11:55,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1086 to 657. [2022-11-23 02:11:55,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 657 states, 615 states have (on average 1.2682926829268293) internal successors, (780), 621 states have internal predecessors, (780), 28 states have call successors, (28), 10 states have call predecessors, (28), 10 states have return successors, (29), 25 states have call predecessors, (29), 28 states have call successors, (29) [2022-11-23 02:11:55,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 657 states to 657 states and 837 transitions. [2022-11-23 02:11:55,595 INFO L78 Accepts]: Start accepts. Automaton has 657 states and 837 transitions. Word has length 62 [2022-11-23 02:11:55,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:11:55,595 INFO L495 AbstractCegarLoop]: Abstraction has 657 states and 837 transitions. [2022-11-23 02:11:55,596 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.0) internal successors, (56), 6 states have internal predecessors, (56), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-23 02:11:55,596 INFO L276 IsEmpty]: Start isEmpty. Operand 657 states and 837 transitions. [2022-11-23 02:11:55,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-11-23 02:11:55,597 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:11:55,597 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 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] [2022-11-23 02:11:55,610 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f5a0437-d28d-41c4-a480-1ee77d8a1eb3/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-23 02:11:55,806 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f5a0437-d28d-41c4-a480-1ee77d8a1eb3/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-11-23 02:11:55,807 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-23 02:11:55,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:11:55,807 INFO L85 PathProgramCache]: Analyzing trace with hash -1714113871, now seen corresponding path program 1 times [2022-11-23 02:11:55,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:11:55,807 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141756127] [2022-11-23 02:11:55,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:11:55,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:11:55,874 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-23 02:11:55,874 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1763236348] [2022-11-23 02:11:55,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:11:55,875 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:11:55,875 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f5a0437-d28d-41c4-a480-1ee77d8a1eb3/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 02:11:55,876 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f5a0437-d28d-41c4-a480-1ee77d8a1eb3/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 02:11:55,887 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f5a0437-d28d-41c4-a480-1ee77d8a1eb3/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-23 02:11:56,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:11:56,444 INFO L263 TraceCheckSpWp]: Trace formula consists of 773 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-23 02:11:56,448 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 02:11:56,558 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-23 02:11:56,558 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 02:11:56,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:11:56,559 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141756127] [2022-11-23 02:11:56,559 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-23 02:11:56,559 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1763236348] [2022-11-23 02:11:56,559 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1763236348] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:11:56,559 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:11:56,560 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-23 02:11:56,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527733024] [2022-11-23 02:11:56,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:11:56,560 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-23 02:11:56,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:11:56,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-23 02:11:56,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-23 02:11:56,562 INFO L87 Difference]: Start difference. First operand 657 states and 837 transitions. Second operand has 6 states, 6 states have (on average 13.5) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-23 02:11:56,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:11:56,732 INFO L93 Difference]: Finished difference Result 1246 states and 1598 transitions. [2022-11-23 02:11:56,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-23 02:11:56,733 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) Word has length 93 [2022-11-23 02:11:56,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:11:56,736 INFO L225 Difference]: With dead ends: 1246 [2022-11-23 02:11:56,736 INFO L226 Difference]: Without dead ends: 657 [2022-11-23 02:11:56,737 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-11-23 02:11:56,738 INFO L413 NwaCegarLoop]: 302 mSDtfsCounter, 25 mSDsluCounter, 1119 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 1421 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 02:11:56,739 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 1421 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 02:11:56,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 657 states. [2022-11-23 02:11:56,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 657 to 657. [2022-11-23 02:11:56,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 657 states, 615 states have (on average 1.2682926829268293) internal successors, (780), 621 states have internal predecessors, (780), 28 states have call successors, (28), 10 states have call predecessors, (28), 10 states have return successors, (28), 25 states have call predecessors, (28), 28 states have call successors, (28) [2022-11-23 02:11:56,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 657 states to 657 states and 836 transitions. [2022-11-23 02:11:56,795 INFO L78 Accepts]: Start accepts. Automaton has 657 states and 836 transitions. Word has length 93 [2022-11-23 02:11:56,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:11:56,796 INFO L495 AbstractCegarLoop]: Abstraction has 657 states and 836 transitions. [2022-11-23 02:11:56,796 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-23 02:11:56,796 INFO L276 IsEmpty]: Start isEmpty. Operand 657 states and 836 transitions. [2022-11-23 02:11:56,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-11-23 02:11:56,797 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:11:56,797 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 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] [2022-11-23 02:11:56,815 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f5a0437-d28d-41c4-a480-1ee77d8a1eb3/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-23 02:11:57,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f5a0437-d28d-41c4-a480-1ee77d8a1eb3/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:11:57,007 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-23 02:11:57,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:11:57,008 INFO L85 PathProgramCache]: Analyzing trace with hash 828828729, now seen corresponding path program 1 times [2022-11-23 02:11:57,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:11:57,008 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516344304] [2022-11-23 02:11:57,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:11:57,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:11:57,057 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-23 02:11:57,057 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [750695753] [2022-11-23 02:11:57,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:11:57,058 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:11:57,058 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f5a0437-d28d-41c4-a480-1ee77d8a1eb3/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 02:11:57,059 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f5a0437-d28d-41c4-a480-1ee77d8a1eb3/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 02:11:57,078 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f5a0437-d28d-41c4-a480-1ee77d8a1eb3/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-23 02:11:57,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:11:57,701 INFO L263 TraceCheckSpWp]: Trace formula consists of 783 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-23 02:11:57,705 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 02:11:57,744 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 [2022-11-23 02:11:57,756 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 [2022-11-23 02:11:57,764 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-23 02:11:57,764 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 02:11:57,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:11:57,764 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516344304] [2022-11-23 02:11:57,764 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-23 02:11:57,765 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [750695753] [2022-11-23 02:11:57,765 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [750695753] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:11:57,765 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:11:57,765 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 02:11:57,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211582549] [2022-11-23 02:11:57,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:11:57,768 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 02:11:57,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:11:57,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 02:11:57,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 02:11:57,769 INFO L87 Difference]: Start difference. First operand 657 states and 836 transitions. Second operand has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-11-23 02:11:58,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:11:58,145 INFO L93 Difference]: Finished difference Result 947 states and 1224 transitions. [2022-11-23 02:11:58,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 02:11:58,145 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 98 [2022-11-23 02:11:58,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:11:58,151 INFO L225 Difference]: With dead ends: 947 [2022-11-23 02:11:58,151 INFO L226 Difference]: Without dead ends: 850 [2022-11-23 02:11:58,152 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-23 02:11:58,153 INFO L413 NwaCegarLoop]: 306 mSDtfsCounter, 108 mSDsluCounter, 534 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 840 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-23 02:11:58,154 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 840 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-23 02:11:58,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 850 states. [2022-11-23 02:11:58,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 850 to 661. [2022-11-23 02:11:58,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 661 states, 619 states have (on average 1.2665589660743135) internal successors, (784), 625 states have internal predecessors, (784), 28 states have call successors, (28), 10 states have call predecessors, (28), 10 states have return successors, (28), 25 states have call predecessors, (28), 28 states have call successors, (28) [2022-11-23 02:11:58,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 661 states to 661 states and 840 transitions. [2022-11-23 02:11:58,190 INFO L78 Accepts]: Start accepts. Automaton has 661 states and 840 transitions. Word has length 98 [2022-11-23 02:11:58,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:11:58,191 INFO L495 AbstractCegarLoop]: Abstraction has 661 states and 840 transitions. [2022-11-23 02:11:58,191 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-11-23 02:11:58,191 INFO L276 IsEmpty]: Start isEmpty. Operand 661 states and 840 transitions. [2022-11-23 02:11:58,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-11-23 02:11:58,192 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:11:58,192 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 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] [2022-11-23 02:11:58,206 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f5a0437-d28d-41c4-a480-1ee77d8a1eb3/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-23 02:11:58,402 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f5a0437-d28d-41c4-a480-1ee77d8a1eb3/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:11:58,402 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-23 02:11:58,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:11:58,403 INFO L85 PathProgramCache]: Analyzing trace with hash -1205616451, now seen corresponding path program 1 times [2022-11-23 02:11:58,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:11:58,403 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376208881] [2022-11-23 02:11:58,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:11:58,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:11:58,463 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-23 02:11:58,463 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [305593510] [2022-11-23 02:11:58,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:11:58,464 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:11:58,464 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f5a0437-d28d-41c4-a480-1ee77d8a1eb3/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 02:11:58,465 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f5a0437-d28d-41c4-a480-1ee77d8a1eb3/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 02:11:58,498 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f5a0437-d28d-41c4-a480-1ee77d8a1eb3/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-23 02:11:59,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:11:59,647 INFO L263 TraceCheckSpWp]: Trace formula consists of 959 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-23 02:11:59,650 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 02:11:59,737 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-23 02:11:59,737 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 02:11:59,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:11:59,738 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376208881] [2022-11-23 02:11:59,738 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-23 02:11:59,738 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [305593510] [2022-11-23 02:11:59,738 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [305593510] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:11:59,738 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:11:59,738 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-23 02:11:59,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482292293] [2022-11-23 02:11:59,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:11:59,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-23 02:11:59,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:11:59,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-23 02:11:59,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-23 02:11:59,740 INFO L87 Difference]: Start difference. First operand 661 states and 840 transitions. Second operand has 8 states, 8 states have (on average 10.625) internal successors, (85), 8 states have internal predecessors, (85), 3 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-11-23 02:11:59,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:11:59,916 INFO L93 Difference]: Finished difference Result 1262 states and 1617 transitions. [2022-11-23 02:11:59,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-23 02:11:59,917 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.625) internal successors, (85), 8 states have internal predecessors, (85), 3 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 108 [2022-11-23 02:11:59,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:11:59,920 INFO L225 Difference]: With dead ends: 1262 [2022-11-23 02:11:59,920 INFO L226 Difference]: Without dead ends: 666 [2022-11-23 02:11:59,922 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-11-23 02:11:59,922 INFO L413 NwaCegarLoop]: 302 mSDtfsCounter, 18 mSDsluCounter, 1780 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 2082 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 02:11:59,923 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 2082 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 02:11:59,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 666 states. [2022-11-23 02:11:59,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 666 to 666. [2022-11-23 02:11:59,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 666 states, 623 states have (on average 1.2664526484751204) internal successors, (789), 630 states have internal predecessors, (789), 28 states have call successors, (28), 10 states have call predecessors, (28), 11 states have return successors, (29), 25 states have call predecessors, (29), 28 states have call successors, (29) [2022-11-23 02:11:59,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 666 states to 666 states and 846 transitions. [2022-11-23 02:11:59,957 INFO L78 Accepts]: Start accepts. Automaton has 666 states and 846 transitions. Word has length 108 [2022-11-23 02:11:59,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:11:59,957 INFO L495 AbstractCegarLoop]: Abstraction has 666 states and 846 transitions. [2022-11-23 02:11:59,957 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.625) internal successors, (85), 8 states have internal predecessors, (85), 3 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-11-23 02:11:59,958 INFO L276 IsEmpty]: Start isEmpty. Operand 666 states and 846 transitions. [2022-11-23 02:11:59,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-11-23 02:11:59,959 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:11:59,959 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:11:59,984 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f5a0437-d28d-41c4-a480-1ee77d8a1eb3/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-23 02:12:00,176 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f5a0437-d28d-41c4-a480-1ee77d8a1eb3/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:12:00,176 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-23 02:12:00,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:12:00,177 INFO L85 PathProgramCache]: Analyzing trace with hash -1537609937, now seen corresponding path program 1 times [2022-11-23 02:12:00,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:12:00,177 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266545431] [2022-11-23 02:12:00,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:12:00,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:12:00,233 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-23 02:12:00,233 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [572703072] [2022-11-23 02:12:00,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:12:00,234 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:12:00,234 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f5a0437-d28d-41c4-a480-1ee77d8a1eb3/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 02:12:00,235 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f5a0437-d28d-41c4-a480-1ee77d8a1eb3/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 02:12:00,251 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f5a0437-d28d-41c4-a480-1ee77d8a1eb3/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-23 02:12:02,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:12:02,345 INFO L263 TraceCheckSpWp]: Trace formula consists of 989 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-23 02:12:02,348 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 02:12:02,439 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 24 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-23 02:12:02,440 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 02:12:02,633 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-23 02:12:02,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:12:02,633 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [266545431] [2022-11-23 02:12:02,633 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-23 02:12:02,633 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [572703072] [2022-11-23 02:12:02,633 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [572703072] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 02:12:02,634 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-23 02:12:02,634 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5] total 12 [2022-11-23 02:12:02,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311552532] [2022-11-23 02:12:02,634 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-23 02:12:02,635 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-23 02:12:02,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:12:02,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-23 02:12:02,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2022-11-23 02:12:02,636 INFO L87 Difference]: Start difference. First operand 666 states and 846 transitions. Second operand has 12 states, 12 states have (on average 8.75) internal successors, (105), 12 states have internal predecessors, (105), 3 states have call successors, (13), 2 states have call predecessors, (13), 6 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-11-23 02:12:03,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:12:03,002 INFO L93 Difference]: Finished difference Result 1285 states and 1649 transitions. [2022-11-23 02:12:03,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-23 02:12:03,003 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 8.75) internal successors, (105), 12 states have internal predecessors, (105), 3 states have call successors, (13), 2 states have call predecessors, (13), 6 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 110 [2022-11-23 02:12:03,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:12:03,006 INFO L225 Difference]: With dead ends: 1285 [2022-11-23 02:12:03,006 INFO L226 Difference]: Without dead ends: 682 [2022-11-23 02:12:03,008 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 208 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=78, Invalid=264, Unknown=0, NotChecked=0, Total=342 [2022-11-23 02:12:03,008 INFO L413 NwaCegarLoop]: 303 mSDtfsCounter, 40 mSDsluCounter, 1790 mSDsCounter, 0 mSdLazyCounter, 184 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 2093 SdHoareTripleChecker+Invalid, 198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-23 02:12:03,009 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 2093 Invalid, 198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 184 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-23 02:12:03,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 682 states. [2022-11-23 02:12:03,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 682 to 679. [2022-11-23 02:12:03,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 679 states, 635 states have (on average 1.2708661417322835) internal successors, (807), 642 states have internal predecessors, (807), 28 states have call successors, (28), 11 states have call predecessors, (28), 12 states have return successors, (29), 25 states have call predecessors, (29), 28 states have call successors, (29) [2022-11-23 02:12:03,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 679 states to 679 states and 864 transitions. [2022-11-23 02:12:03,048 INFO L78 Accepts]: Start accepts. Automaton has 679 states and 864 transitions. Word has length 110 [2022-11-23 02:12:03,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:12:03,049 INFO L495 AbstractCegarLoop]: Abstraction has 679 states and 864 transitions. [2022-11-23 02:12:03,049 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.75) internal successors, (105), 12 states have internal predecessors, (105), 3 states have call successors, (13), 2 states have call predecessors, (13), 6 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-11-23 02:12:03,049 INFO L276 IsEmpty]: Start isEmpty. Operand 679 states and 864 transitions. [2022-11-23 02:12:03,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-11-23 02:12:03,053 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:12:03,053 INFO L195 NwaCegarLoop]: trace histogram [6, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-23 02:12:03,079 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f5a0437-d28d-41c4-a480-1ee77d8a1eb3/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-23 02:12:03,274 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f5a0437-d28d-41c4-a480-1ee77d8a1eb3/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:12:03,274 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-23 02:12:03,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:12:03,275 INFO L85 PathProgramCache]: Analyzing trace with hash -156663203, now seen corresponding path program 2 times [2022-11-23 02:12:03,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:12:03,275 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [958718657] [2022-11-23 02:12:03,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:12:03,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:12:03,336 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-23 02:12:03,336 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [69356609] [2022-11-23 02:12:03,336 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-23 02:12:03,337 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:12:03,337 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f5a0437-d28d-41c4-a480-1ee77d8a1eb3/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 02:12:03,338 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f5a0437-d28d-41c4-a480-1ee77d8a1eb3/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 02:12:03,349 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f5a0437-d28d-41c4-a480-1ee77d8a1eb3/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-23 02:12:16,155 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-23 02:12:16,155 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 02:12:16,171 INFO L263 TraceCheckSpWp]: Trace formula consists of 1049 conjuncts, 29 conjunts are in the unsatisfiable core [2022-11-23 02:12:16,175 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 02:12:16,361 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 38 proven. 10 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-23 02:12:16,361 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 02:12:16,696 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-11-23 02:12:16,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:12:16,697 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [958718657] [2022-11-23 02:12:16,697 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-23 02:12:16,697 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [69356609] [2022-11-23 02:12:16,697 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [69356609] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 02:12:16,697 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-23 02:12:16,697 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 8] total 19 [2022-11-23 02:12:16,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732853174] [2022-11-23 02:12:16,698 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-23 02:12:16,698 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-23 02:12:16,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:12:16,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-23 02:12:16,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=271, Unknown=0, NotChecked=0, Total=342 [2022-11-23 02:12:16,699 INFO L87 Difference]: Start difference. First operand 679 states and 864 transitions. Second operand has 19 states, 19 states have (on average 5.947368421052632) internal successors, (113), 19 states have internal predecessors, (113), 3 states have call successors, (13), 2 states have call predecessors, (13), 6 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-11-23 02:12:18,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:12:18,299 INFO L93 Difference]: Finished difference Result 1378 states and 1766 transitions. [2022-11-23 02:12:18,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-23 02:12:18,301 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.947368421052632) internal successors, (113), 19 states have internal predecessors, (113), 3 states have call successors, (13), 2 states have call predecessors, (13), 6 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 114 [2022-11-23 02:12:18,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:12:18,304 INFO L225 Difference]: With dead ends: 1378 [2022-11-23 02:12:18,304 INFO L226 Difference]: Without dead ends: 697 [2022-11-23 02:12:18,306 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 209 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=275, Invalid=915, Unknown=0, NotChecked=0, Total=1190 [2022-11-23 02:12:18,307 INFO L413 NwaCegarLoop]: 301 mSDtfsCounter, 329 mSDsluCounter, 2996 mSDsCounter, 0 mSdLazyCounter, 574 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 348 SdHoareTripleChecker+Valid, 3297 SdHoareTripleChecker+Invalid, 616 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 574 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-23 02:12:18,307 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [348 Valid, 3297 Invalid, 616 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 574 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-23 02:12:18,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 697 states. [2022-11-23 02:12:18,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 697 to 685. [2022-11-23 02:12:18,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 685 states, 641 states have (on average 1.2683307332293292) internal successors, (813), 648 states have internal predecessors, (813), 28 states have call successors, (28), 11 states have call predecessors, (28), 12 states have return successors, (29), 25 states have call predecessors, (29), 28 states have call successors, (29) [2022-11-23 02:12:18,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 685 states to 685 states and 870 transitions. [2022-11-23 02:12:18,352 INFO L78 Accepts]: Start accepts. Automaton has 685 states and 870 transitions. Word has length 114 [2022-11-23 02:12:18,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:12:18,353 INFO L495 AbstractCegarLoop]: Abstraction has 685 states and 870 transitions. [2022-11-23 02:12:18,353 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.947368421052632) internal successors, (113), 19 states have internal predecessors, (113), 3 states have call successors, (13), 2 states have call predecessors, (13), 6 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-11-23 02:12:18,353 INFO L276 IsEmpty]: Start isEmpty. Operand 685 states and 870 transitions. [2022-11-23 02:12:18,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-11-23 02:12:18,355 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:12:18,355 INFO L195 NwaCegarLoop]: trace histogram [15, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-23 02:12:18,376 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f5a0437-d28d-41c4-a480-1ee77d8a1eb3/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-23 02:12:18,571 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f5a0437-d28d-41c4-a480-1ee77d8a1eb3/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-23 02:12:18,571 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-23 02:12:18,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:12:18,572 INFO L85 PathProgramCache]: Analyzing trace with hash 2029920984, now seen corresponding path program 3 times [2022-11-23 02:12:18,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:12:18,572 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642167400] [2022-11-23 02:12:18,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:12:18,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:12:18,652 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-23 02:12:18,657 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1930737321] [2022-11-23 02:12:18,668 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-23 02:12:18,668 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:12:18,668 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f5a0437-d28d-41c4-a480-1ee77d8a1eb3/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 02:12:18,669 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f5a0437-d28d-41c4-a480-1ee77d8a1eb3/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 02:12:18,677 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f5a0437-d28d-41c4-a480-1ee77d8a1eb3/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process