./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test5-2.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_93b43bd4-eb55-4d95-93d8-122e27127bf5/bin/uautomizer-QkZJyEgLgS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93b43bd4-eb55-4d95-93d8-122e27127bf5/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_93b43bd4-eb55-4d95-93d8-122e27127bf5/bin/uautomizer-QkZJyEgLgS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93b43bd4-eb55-4d95-93d8-122e27127bf5/bin/uautomizer-QkZJyEgLgS/config/AutomizerReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test5-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93b43bd4-eb55-4d95-93d8-122e27127bf5/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_93b43bd4-eb55-4d95-93d8-122e27127bf5/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 0f3b69410d84404822a26401b92e2c10c65259dbe30a6f843124f3a9a51940ad --- 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 03:48:45,133 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 03:48:45,135 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 03:48:45,177 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 03:48:45,177 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 03:48:45,181 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 03:48:45,184 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 03:48:45,187 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 03:48:45,189 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 03:48:45,194 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 03:48:45,195 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 03:48:45,196 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 03:48:45,197 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 03:48:45,198 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 03:48:45,199 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 03:48:45,200 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 03:48:45,200 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 03:48:45,201 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 03:48:45,203 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 03:48:45,205 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 03:48:45,206 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 03:48:45,211 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 03:48:45,213 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 03:48:45,214 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 03:48:45,229 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 03:48:45,230 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 03:48:45,230 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 03:48:45,232 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 03:48:45,232 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 03:48:45,233 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 03:48:45,233 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 03:48:45,234 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 03:48:45,235 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 03:48:45,235 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 03:48:45,236 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 03:48:45,236 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 03:48:45,237 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 03:48:45,237 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 03:48:45,238 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 03:48:45,239 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 03:48:45,239 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 03:48:45,240 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93b43bd4-eb55-4d95-93d8-122e27127bf5/bin/uautomizer-QkZJyEgLgS/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-23 03:48:45,260 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 03:48:45,261 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 03:48:45,262 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 03:48:45,262 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 03:48:45,263 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 03:48:45,264 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 03:48:45,264 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-23 03:48:45,264 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-23 03:48:45,265 INFO L138 SettingsManager]: * Use SBE=true [2022-11-23 03:48:45,265 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 03:48:45,266 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-23 03:48:45,266 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 03:48:45,267 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-23 03:48:45,267 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 03:48:45,267 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 03:48:45,267 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 03:48:45,267 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 03:48:45,267 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-23 03:48:45,268 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 03:48:45,268 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 03:48:45,268 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 03:48:45,268 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 03:48:45,268 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-23 03:48:45,269 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 03:48:45,269 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 03:48:45,269 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 03:48:45,269 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 03:48:45,270 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 03:48:45,270 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-23 03:48:45,270 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 03:48:45,270 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-23 03:48:45,270 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 03:48:45,271 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-23 03:48:45,271 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-23 03:48:45,271 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_93b43bd4-eb55-4d95-93d8-122e27127bf5/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93b43bd4-eb55-4d95-93d8-122e27127bf5/bin/uautomizer-QkZJyEgLgS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0f3b69410d84404822a26401b92e2c10c65259dbe30a6f843124f3a9a51940ad [2022-11-23 03:48:45,561 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 03:48:45,599 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 03:48:45,601 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 03:48:45,602 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 03:48:45,603 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 03:48:45,604 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93b43bd4-eb55-4d95-93d8-122e27127bf5/bin/uautomizer-QkZJyEgLgS/../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test5-2.i [2022-11-23 03:48:48,633 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 03:48:48,973 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 03:48:48,974 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93b43bd4-eb55-4d95-93d8-122e27127bf5/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test5-2.i [2022-11-23 03:48:49,001 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93b43bd4-eb55-4d95-93d8-122e27127bf5/bin/uautomizer-QkZJyEgLgS/data/ba46c7e54/023ea7ffac9b48279312ceefa929418d/FLAG3c20ecb31 [2022-11-23 03:48:49,021 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93b43bd4-eb55-4d95-93d8-122e27127bf5/bin/uautomizer-QkZJyEgLgS/data/ba46c7e54/023ea7ffac9b48279312ceefa929418d [2022-11-23 03:48:49,027 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 03:48:49,029 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 03:48:49,034 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 03:48:49,034 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 03:48:49,038 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 03:48:49,039 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:48:49" (1/1) ... [2022-11-23 03:48:49,040 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@149ca031 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:48:49, skipping insertion in model container [2022-11-23 03:48:49,040 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:48:49" (1/1) ... [2022-11-23 03:48:49,048 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 03:48:49,129 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 03:48:49,550 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_93b43bd4-eb55-4d95-93d8-122e27127bf5/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test5-2.i[33021,33034] [2022-11-23 03:48:49,740 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_93b43bd4-eb55-4d95-93d8-122e27127bf5/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test5-2.i[49681,49694] [2022-11-23 03:48:49,759 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 03:48:49,769 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 03:48:49,799 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_93b43bd4-eb55-4d95-93d8-122e27127bf5/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test5-2.i[33021,33034] [2022-11-23 03:48:49,934 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_93b43bd4-eb55-4d95-93d8-122e27127bf5/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test5-2.i[49681,49694] [2022-11-23 03:48:49,946 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 03:48:49,981 INFO L208 MainTranslator]: Completed translation [2022-11-23 03:48:49,982 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:48:49 WrapperNode [2022-11-23 03:48:49,982 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 03:48:49,983 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 03:48:49,983 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 03:48:49,984 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 03:48:49,989 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:48:49" (1/1) ... [2022-11-23 03:48:50,023 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:48:49" (1/1) ... [2022-11-23 03:48:50,099 INFO L138 Inliner]: procedures = 177, calls = 439, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1549 [2022-11-23 03:48:50,100 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 03:48:50,101 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 03:48:50,101 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 03:48:50,101 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 03:48:50,111 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:48:49" (1/1) ... [2022-11-23 03:48:50,111 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:48:49" (1/1) ... [2022-11-23 03:48:50,125 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:48:49" (1/1) ... [2022-11-23 03:48:50,126 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:48:49" (1/1) ... [2022-11-23 03:48:50,182 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:48:49" (1/1) ... [2022-11-23 03:48:50,221 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:48:49" (1/1) ... [2022-11-23 03:48:50,226 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:48:49" (1/1) ... [2022-11-23 03:48:50,241 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:48:49" (1/1) ... [2022-11-23 03:48:50,259 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 03:48:50,261 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 03:48:50,261 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 03:48:50,263 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 03:48:50,264 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:48:49" (1/1) ... [2022-11-23 03:48:50,271 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 03:48:50,282 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93b43bd4-eb55-4d95-93d8-122e27127bf5/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 03:48:50,323 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93b43bd4-eb55-4d95-93d8-122e27127bf5/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 03:48:50,353 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93b43bd4-eb55-4d95-93d8-122e27127bf5/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 03:48:50,421 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-23 03:48:50,421 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-23 03:48:50,421 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-23 03:48:50,422 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-23 03:48:50,422 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-23 03:48:50,423 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-23 03:48:50,423 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-23 03:48:50,423 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 03:48:50,423 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-23 03:48:50,423 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-23 03:48:50,423 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2022-11-23 03:48:50,424 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-23 03:48:50,424 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-23 03:48:50,424 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 03:48:50,440 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 03:48:50,440 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 03:48:50,751 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 03:48:50,752 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 03:48:52,862 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 03:48:52,870 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 03:48:52,870 INFO L300 CfgBuilder]: Removed 92 assume(true) statements. [2022-11-23 03:48:52,873 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:48:52 BoogieIcfgContainer [2022-11-23 03:48:52,873 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 03:48:52,875 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 03:48:52,875 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 03:48:52,878 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 03:48:52,878 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 03:48:49" (1/3) ... [2022-11-23 03:48:52,879 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@766e1539 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:48:52, skipping insertion in model container [2022-11-23 03:48:52,879 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:48:49" (2/3) ... [2022-11-23 03:48:52,880 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@766e1539 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:48:52, skipping insertion in model container [2022-11-23 03:48:52,880 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:48:52" (3/3) ... [2022-11-23 03:48:52,881 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_BER_test5-2.i [2022-11-23 03:48:52,900 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 03:48:52,900 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-23 03:48:52,955 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 03:48:52,961 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;@af30f36, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 03:48:52,962 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-23 03:48:52,967 INFO L276 IsEmpty]: Start isEmpty. Operand has 283 states, 267 states have (on average 1.700374531835206) internal successors, (454), 274 states have internal predecessors, (454), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2022-11-23 03:48:52,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-23 03:48:52,975 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:48:52,975 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:48:52,976 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:48:52,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:48:52,982 INFO L85 PathProgramCache]: Analyzing trace with hash 678032416, now seen corresponding path program 1 times [2022-11-23 03:48:52,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:48:52,992 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546109149] [2022-11-23 03:48:52,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:48:52,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:48:53,117 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-23 03:48:53,118 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [305216124] [2022-11-23 03:48:53,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:48:53,119 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 03:48:53,119 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93b43bd4-eb55-4d95-93d8-122e27127bf5/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 03:48:53,125 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93b43bd4-eb55-4d95-93d8-122e27127bf5/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 03:48:53,129 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93b43bd4-eb55-4d95-93d8-122e27127bf5/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-23 03:48:53,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:48:53,340 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-23 03:48:53,348 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 03:48:53,370 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 03:48:53,370 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 03:48:53,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:48:53,371 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546109149] [2022-11-23 03:48:53,371 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-23 03:48:53,371 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [305216124] [2022-11-23 03:48:53,372 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [305216124] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:48:53,372 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:48:53,372 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 03:48:53,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361406721] [2022-11-23 03:48:53,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:48:53,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-23 03:48:53,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:48:53,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-23 03:48:53,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-23 03:48:53,436 INFO L87 Difference]: Start difference. First operand has 283 states, 267 states have (on average 1.700374531835206) internal successors, (454), 274 states have internal predecessors, (454), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) 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 03:48:53,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:48:53,525 INFO L93 Difference]: Finished difference Result 564 states and 955 transitions. [2022-11-23 03:48:53,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-23 03:48:53,527 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 03:48:53,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:48:53,550 INFO L225 Difference]: With dead ends: 564 [2022-11-23 03:48:53,550 INFO L226 Difference]: Without dead ends: 250 [2022-11-23 03:48:53,558 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 7 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 03:48:53,564 INFO L413 NwaCegarLoop]: 375 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, 375 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 03:48:53,566 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 375 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 03:48:53,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2022-11-23 03:48:53,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 250. [2022-11-23 03:48:53,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 250 states, 235 states have (on average 1.3148936170212766) internal successors, (309), 241 states have internal predecessors, (309), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2022-11-23 03:48:53,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 331 transitions. [2022-11-23 03:48:53,645 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 331 transitions. Word has length 8 [2022-11-23 03:48:53,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:48:53,645 INFO L495 AbstractCegarLoop]: Abstraction has 250 states and 331 transitions. [2022-11-23 03:48:53,646 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 03:48:53,646 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 331 transitions. [2022-11-23 03:48:53,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-11-23 03:48:53,649 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:48:53,650 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] [2022-11-23 03:48:53,663 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93b43bd4-eb55-4d95-93d8-122e27127bf5/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-23 03:48:53,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93b43bd4-eb55-4d95-93d8-122e27127bf5/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-11-23 03:48:53,864 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:48:53,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:48:53,865 INFO L85 PathProgramCache]: Analyzing trace with hash -1368100487, now seen corresponding path program 1 times [2022-11-23 03:48:53,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:48:53,865 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [307303261] [2022-11-23 03:48:53,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:48:53,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:48:53,904 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-23 03:48:53,909 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1127562085] [2022-11-23 03:48:53,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:48:53,911 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 03:48:53,911 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93b43bd4-eb55-4d95-93d8-122e27127bf5/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 03:48:53,912 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93b43bd4-eb55-4d95-93d8-122e27127bf5/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 03:48:53,944 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93b43bd4-eb55-4d95-93d8-122e27127bf5/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-23 03:48:54,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:48:54,162 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-23 03:48:54,165 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 03:48:54,184 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 03:48:54,184 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 03:48:54,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:48:54,185 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [307303261] [2022-11-23 03:48:54,185 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-23 03:48:54,185 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1127562085] [2022-11-23 03:48:54,185 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1127562085] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:48:54,185 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:48:54,186 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 03:48:54,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645901372] [2022-11-23 03:48:54,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:48:54,187 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 03:48:54,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:48:54,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 03:48:54,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 03:48:54,188 INFO L87 Difference]: Start difference. First operand 250 states and 331 transitions. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 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 03:48:54,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:48:54,238 INFO L93 Difference]: Finished difference Result 565 states and 756 transitions. [2022-11-23 03:48:54,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 03:48:54,238 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 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 42 [2022-11-23 03:48:54,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:48:54,241 INFO L225 Difference]: With dead ends: 565 [2022-11-23 03:48:54,241 INFO L226 Difference]: Without dead ends: 487 [2022-11-23 03:48:54,242 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 40 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 03:48:54,243 INFO L413 NwaCegarLoop]: 337 mSDtfsCounter, 294 mSDsluCounter, 323 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 305 SdHoareTripleChecker+Valid, 660 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 03:48:54,244 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [305 Valid, 660 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 03:48:54,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 487 states. [2022-11-23 03:48:54,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 487 to 251. [2022-11-23 03:48:54,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 251 states, 236 states have (on average 1.3135593220338984) internal successors, (310), 242 states have internal predecessors, (310), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2022-11-23 03:48:54,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 332 transitions. [2022-11-23 03:48:54,284 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 332 transitions. Word has length 42 [2022-11-23 03:48:54,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:48:54,284 INFO L495 AbstractCegarLoop]: Abstraction has 251 states and 332 transitions. [2022-11-23 03:48:54,284 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 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 03:48:54,285 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 332 transitions. [2022-11-23 03:48:54,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2022-11-23 03:48:54,292 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:48:54,292 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:48:54,298 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93b43bd4-eb55-4d95-93d8-122e27127bf5/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-11-23 03:48:54,498 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93b43bd4-eb55-4d95-93d8-122e27127bf5/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2022-11-23 03:48:54,498 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:48:54,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:48:54,499 INFO L85 PathProgramCache]: Analyzing trace with hash -1909784615, now seen corresponding path program 1 times [2022-11-23 03:48:54,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:48:54,499 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [293826770] [2022-11-23 03:48:54,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:48:54,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:48:54,799 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-23 03:48:54,800 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1166521517] [2022-11-23 03:48:54,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:48:54,801 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 03:48:54,802 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93b43bd4-eb55-4d95-93d8-122e27127bf5/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 03:48:54,803 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93b43bd4-eb55-4d95-93d8-122e27127bf5/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 03:48:54,826 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93b43bd4-eb55-4d95-93d8-122e27127bf5/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-23 03:48:56,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:48:56,229 INFO L263 TraceCheckSpWp]: Trace formula consists of 3071 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-23 03:48:56,236 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 03:48:56,265 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:48:56,266 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 03:48:56,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:48:56,266 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [293826770] [2022-11-23 03:48:56,266 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-23 03:48:56,267 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1166521517] [2022-11-23 03:48:56,267 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1166521517] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:48:56,267 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:48:56,267 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 03:48:56,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531200151] [2022-11-23 03:48:56,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:48:56,268 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 03:48:56,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:48:56,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 03:48:56,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 03:48:56,269 INFO L87 Difference]: Start difference. First operand 251 states and 332 transitions. Second operand has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:48:56,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:48:56,459 INFO L93 Difference]: Finished difference Result 520 states and 692 transitions. [2022-11-23 03:48:56,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 03:48:56,460 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 140 [2022-11-23 03:48:56,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:48:56,462 INFO L225 Difference]: With dead ends: 520 [2022-11-23 03:48:56,462 INFO L226 Difference]: Without dead ends: 272 [2022-11-23 03:48:56,464 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 138 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 03:48:56,466 INFO L413 NwaCegarLoop]: 311 mSDtfsCounter, 9 mSDsluCounter, 296 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 607 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-23 03:48:56,472 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 607 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-23 03:48:56,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2022-11-23 03:48:56,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 271. [2022-11-23 03:48:56,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 271 states, 256 states have (on average 1.2890625) internal successors, (330), 262 states have internal predecessors, (330), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2022-11-23 03:48:56,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 352 transitions. [2022-11-23 03:48:56,495 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 352 transitions. Word has length 140 [2022-11-23 03:48:56,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:48:56,496 INFO L495 AbstractCegarLoop]: Abstraction has 271 states and 352 transitions. [2022-11-23 03:48:56,496 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:48:56,496 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 352 transitions. [2022-11-23 03:48:56,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2022-11-23 03:48:56,502 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:48:56,502 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:48:56,515 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93b43bd4-eb55-4d95-93d8-122e27127bf5/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-23 03:48:56,705 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93b43bd4-eb55-4d95-93d8-122e27127bf5/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 03:48:56,706 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:48:56,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:48:56,706 INFO L85 PathProgramCache]: Analyzing trace with hash -1480126309, now seen corresponding path program 1 times [2022-11-23 03:48:56,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:48:56,707 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1948349646] [2022-11-23 03:48:56,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:48:56,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:48:56,963 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-23 03:48:56,964 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [503275112] [2022-11-23 03:48:56,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:48:56,964 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 03:48:56,964 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93b43bd4-eb55-4d95-93d8-122e27127bf5/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 03:48:56,965 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93b43bd4-eb55-4d95-93d8-122e27127bf5/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 03:48:56,995 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93b43bd4-eb55-4d95-93d8-122e27127bf5/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-23 03:48:58,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:48:58,442 INFO L263 TraceCheckSpWp]: Trace formula consists of 3073 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-23 03:48:58,448 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 03:48:58,481 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:48:58,481 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 03:48:58,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:48:58,481 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1948349646] [2022-11-23 03:48:58,482 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-23 03:48:58,482 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [503275112] [2022-11-23 03:48:58,482 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [503275112] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:48:58,482 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:48:58,482 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 03:48:58,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006586123] [2022-11-23 03:48:58,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:48:58,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 03:48:58,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:48:58,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 03:48:58,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 03:48:58,485 INFO L87 Difference]: Start difference. First operand 271 states and 352 transitions. Second operand has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:48:58,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:48:58,607 INFO L93 Difference]: Finished difference Result 560 states and 732 transitions. [2022-11-23 03:48:58,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 03:48:58,608 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 140 [2022-11-23 03:48:58,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:48:58,616 INFO L225 Difference]: With dead ends: 560 [2022-11-23 03:48:58,616 INFO L226 Difference]: Without dead ends: 292 [2022-11-23 03:48:58,617 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 138 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 03:48:58,618 INFO L413 NwaCegarLoop]: 311 mSDtfsCounter, 10 mSDsluCounter, 296 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 607 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 03:48:58,618 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 607 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 03:48:58,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2022-11-23 03:48:58,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 291. [2022-11-23 03:48:58,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 291 states, 276 states have (on average 1.2681159420289856) internal successors, (350), 282 states have internal predecessors, (350), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2022-11-23 03:48:58,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 372 transitions. [2022-11-23 03:48:58,628 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 372 transitions. Word has length 140 [2022-11-23 03:48:58,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:48:58,628 INFO L495 AbstractCegarLoop]: Abstraction has 291 states and 372 transitions. [2022-11-23 03:48:58,629 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:48:58,629 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 372 transitions. [2022-11-23 03:48:58,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2022-11-23 03:48:58,631 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:48:58,632 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:48:58,643 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93b43bd4-eb55-4d95-93d8-122e27127bf5/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-23 03:48:58,838 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93b43bd4-eb55-4d95-93d8-122e27127bf5/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 03:48:58,839 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:48:58,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:48:58,839 INFO L85 PathProgramCache]: Analyzing trace with hash -4891625, now seen corresponding path program 1 times [2022-11-23 03:48:58,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:48:58,839 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071654425] [2022-11-23 03:48:58,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:48:58,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:48:59,070 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-23 03:48:59,071 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [151105984] [2022-11-23 03:48:59,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:48:59,071 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 03:48:59,071 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93b43bd4-eb55-4d95-93d8-122e27127bf5/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 03:48:59,072 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93b43bd4-eb55-4d95-93d8-122e27127bf5/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 03:48:59,094 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93b43bd4-eb55-4d95-93d8-122e27127bf5/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-23 03:49:00,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:49:00,711 INFO L263 TraceCheckSpWp]: Trace formula consists of 3077 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-23 03:49:00,717 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 03:49:00,741 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-23 03:49:00,741 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 03:49:00,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:49:00,742 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1071654425] [2022-11-23 03:49:00,742 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-23 03:49:00,742 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [151105984] [2022-11-23 03:49:00,742 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [151105984] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:49:00,743 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:49:00,743 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 03:49:00,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377046678] [2022-11-23 03:49:00,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:49:00,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 03:49:00,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:49:00,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 03:49:00,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 03:49:00,745 INFO L87 Difference]: Start difference. First operand 291 states and 372 transitions. Second operand has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:49:00,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:49:00,831 INFO L93 Difference]: Finished difference Result 389 states and 508 transitions. [2022-11-23 03:49:00,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 03:49:00,832 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 140 [2022-11-23 03:49:00,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:49:00,834 INFO L225 Difference]: With dead ends: 389 [2022-11-23 03:49:00,834 INFO L226 Difference]: Without dead ends: 312 [2022-11-23 03:49:00,835 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 138 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 03:49:00,836 INFO L413 NwaCegarLoop]: 311 mSDtfsCounter, 9 mSDsluCounter, 296 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 607 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 03:49:00,836 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 607 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 03:49:00,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2022-11-23 03:49:00,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 311. [2022-11-23 03:49:00,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 311 states, 296 states have (on average 1.25) internal successors, (370), 302 states have internal predecessors, (370), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2022-11-23 03:49:00,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 392 transitions. [2022-11-23 03:49:00,846 INFO L78 Accepts]: Start accepts. Automaton has 311 states and 392 transitions. Word has length 140 [2022-11-23 03:49:00,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:49:00,847 INFO L495 AbstractCegarLoop]: Abstraction has 311 states and 392 transitions. [2022-11-23 03:49:00,847 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:49:00,847 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states and 392 transitions. [2022-11-23 03:49:00,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2022-11-23 03:49:00,849 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:49:00,850 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:49:00,868 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93b43bd4-eb55-4d95-93d8-122e27127bf5/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-23 03:49:01,063 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93b43bd4-eb55-4d95-93d8-122e27127bf5/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 03:49:01,063 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:49:01,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:49:01,064 INFO L85 PathProgramCache]: Analyzing trace with hash 1989253081, now seen corresponding path program 1 times [2022-11-23 03:49:01,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:49:01,064 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [876733918] [2022-11-23 03:49:01,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:49:01,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:49:01,327 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-23 03:49:01,328 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [639929664] [2022-11-23 03:49:01,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:49:01,328 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 03:49:01,328 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93b43bd4-eb55-4d95-93d8-122e27127bf5/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 03:49:01,331 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93b43bd4-eb55-4d95-93d8-122e27127bf5/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 03:49:01,339 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93b43bd4-eb55-4d95-93d8-122e27127bf5/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-23 03:49:02,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:49:02,968 INFO L263 TraceCheckSpWp]: Trace formula consists of 3079 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-23 03:49:02,974 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 03:49:03,003 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:49:03,003 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 03:49:03,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:49:03,004 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [876733918] [2022-11-23 03:49:03,004 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-23 03:49:03,004 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [639929664] [2022-11-23 03:49:03,004 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [639929664] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:49:03,004 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:49:03,005 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 03:49:03,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572343043] [2022-11-23 03:49:03,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:49:03,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 03:49:03,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:49:03,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 03:49:03,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 03:49:03,007 INFO L87 Difference]: Start difference. First operand 311 states and 392 transitions. Second operand has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:49:03,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:49:03,093 INFO L93 Difference]: Finished difference Result 611 states and 773 transitions. [2022-11-23 03:49:03,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 03:49:03,094 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 140 [2022-11-23 03:49:03,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:49:03,095 INFO L225 Difference]: With dead ends: 611 [2022-11-23 03:49:03,096 INFO L226 Difference]: Without dead ends: 303 [2022-11-23 03:49:03,096 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 137 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 03:49:03,097 INFO L413 NwaCegarLoop]: 310 mSDtfsCounter, 295 mSDsluCounter, 325 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 306 SdHoareTripleChecker+Valid, 635 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 03:49:03,098 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [306 Valid, 635 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 03:49:03,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2022-11-23 03:49:03,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 297. [2022-11-23 03:49:03,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 297 states, 282 states have (on average 1.2375886524822695) internal successors, (349), 288 states have internal predecessors, (349), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2022-11-23 03:49:03,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 371 transitions. [2022-11-23 03:49:03,108 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 371 transitions. Word has length 140 [2022-11-23 03:49:03,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:49:03,109 INFO L495 AbstractCegarLoop]: Abstraction has 297 states and 371 transitions. [2022-11-23 03:49:03,109 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:49:03,109 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 371 transitions. [2022-11-23 03:49:03,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2022-11-23 03:49:03,111 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:49:03,111 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:49:03,132 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93b43bd4-eb55-4d95-93d8-122e27127bf5/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-23 03:49:03,332 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93b43bd4-eb55-4d95-93d8-122e27127bf5/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 03:49:03,332 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:49:03,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:49:03,333 INFO L85 PathProgramCache]: Analyzing trace with hash 1906468619, now seen corresponding path program 1 times [2022-11-23 03:49:03,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:49:03,333 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1109400515] [2022-11-23 03:49:03,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:49:03,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:49:03,580 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-23 03:49:03,583 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1586192070] [2022-11-23 03:49:03,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:49:03,584 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 03:49:03,584 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93b43bd4-eb55-4d95-93d8-122e27127bf5/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 03:49:03,587 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93b43bd4-eb55-4d95-93d8-122e27127bf5/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 03:49:03,614 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93b43bd4-eb55-4d95-93d8-122e27127bf5/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-23 03:49:05,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:49:05,447 INFO L263 TraceCheckSpWp]: Trace formula consists of 3065 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-23 03:49:05,452 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 03:49:05,477 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:49:05,477 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 03:49:05,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:49:05,478 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1109400515] [2022-11-23 03:49:05,478 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-23 03:49:05,478 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1586192070] [2022-11-23 03:49:05,478 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1586192070] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:49:05,479 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:49:05,479 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 03:49:05,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230914468] [2022-11-23 03:49:05,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:49:05,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 03:49:05,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:49:05,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 03:49:05,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 03:49:05,483 INFO L87 Difference]: Start difference. First operand 297 states and 371 transitions. Second operand has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:49:05,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:49:05,575 INFO L93 Difference]: Finished difference Result 670 states and 837 transitions. [2022-11-23 03:49:05,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 03:49:05,576 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 140 [2022-11-23 03:49:05,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:49:05,578 INFO L225 Difference]: With dead ends: 670 [2022-11-23 03:49:05,578 INFO L226 Difference]: Without dead ends: 376 [2022-11-23 03:49:05,579 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 137 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 03:49:05,580 INFO L413 NwaCegarLoop]: 377 mSDtfsCounter, 288 mSDsluCounter, 492 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 299 SdHoareTripleChecker+Valid, 869 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 03:49:05,580 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [299 Valid, 869 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 03:49:05,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 376 states. [2022-11-23 03:49:05,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 376 to 283. [2022-11-23 03:49:05,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 283 states, 268 states have (on average 1.2238805970149254) internal successors, (328), 274 states have internal predecessors, (328), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2022-11-23 03:49:05,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283 states to 283 states and 350 transitions. [2022-11-23 03:49:05,592 INFO L78 Accepts]: Start accepts. Automaton has 283 states and 350 transitions. Word has length 140 [2022-11-23 03:49:05,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:49:05,593 INFO L495 AbstractCegarLoop]: Abstraction has 283 states and 350 transitions. [2022-11-23 03:49:05,593 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:49:05,593 INFO L276 IsEmpty]: Start isEmpty. Operand 283 states and 350 transitions. [2022-11-23 03:49:05,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2022-11-23 03:49:05,595 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:49:05,595 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:49:05,615 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93b43bd4-eb55-4d95-93d8-122e27127bf5/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-23 03:49:05,806 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93b43bd4-eb55-4d95-93d8-122e27127bf5/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 03:49:05,807 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:49:05,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:49:05,807 INFO L85 PathProgramCache]: Analyzing trace with hash 1296503321, now seen corresponding path program 1 times [2022-11-23 03:49:05,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:49:05,808 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526648985] [2022-11-23 03:49:05,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:49:05,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:49:06,026 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-23 03:49:06,027 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [876574124] [2022-11-23 03:49:06,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:49:06,027 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 03:49:06,028 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93b43bd4-eb55-4d95-93d8-122e27127bf5/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 03:49:06,029 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93b43bd4-eb55-4d95-93d8-122e27127bf5/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 03:49:06,037 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93b43bd4-eb55-4d95-93d8-122e27127bf5/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-23 03:49:08,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:49:08,122 INFO L263 TraceCheckSpWp]: Trace formula consists of 3051 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-23 03:49:08,126 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 03:49:08,167 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-23 03:49:08,168 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 03:49:08,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:49:08,168 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526648985] [2022-11-23 03:49:08,168 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-23 03:49:08,168 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [876574124] [2022-11-23 03:49:08,169 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [876574124] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:49:08,169 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:49:08,169 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 03:49:08,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553674288] [2022-11-23 03:49:08,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:49:08,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 03:49:08,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:49:08,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 03:49:08,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 03:49:08,171 INFO L87 Difference]: Start difference. First operand 283 states and 350 transitions. Second operand has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:49:08,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:49:08,268 INFO L93 Difference]: Finished difference Result 371 states and 466 transitions. [2022-11-23 03:49:08,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 03:49:08,269 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 140 [2022-11-23 03:49:08,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:49:08,271 INFO L225 Difference]: With dead ends: 371 [2022-11-23 03:49:08,271 INFO L226 Difference]: Without dead ends: 274 [2022-11-23 03:49:08,272 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 137 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 03:49:08,273 INFO L413 NwaCegarLoop]: 294 mSDtfsCounter, 88 mSDsluCounter, 507 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 801 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 03:49:08,273 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 801 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 03:49:08,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2022-11-23 03:49:08,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 269. [2022-11-23 03:49:08,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 269 states, 254 states have (on average 1.2086614173228347) internal successors, (307), 260 states have internal predecessors, (307), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2022-11-23 03:49:08,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 329 transitions. [2022-11-23 03:49:08,287 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 329 transitions. Word has length 140 [2022-11-23 03:49:08,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:49:08,288 INFO L495 AbstractCegarLoop]: Abstraction has 269 states and 329 transitions. [2022-11-23 03:49:08,288 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:49:08,288 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 329 transitions. [2022-11-23 03:49:08,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2022-11-23 03:49:08,291 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:49:08,291 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:49:08,311 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93b43bd4-eb55-4d95-93d8-122e27127bf5/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-11-23 03:49:08,507 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93b43bd4-eb55-4d95-93d8-122e27127bf5/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 03:49:08,507 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:49:08,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:49:08,508 INFO L85 PathProgramCache]: Analyzing trace with hash -1580490231, now seen corresponding path program 1 times [2022-11-23 03:49:08,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:49:08,508 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400864973] [2022-11-23 03:49:08,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:49:08,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:49:08,708 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-23 03:49:08,709 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1230522217] [2022-11-23 03:49:08,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:49:08,709 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 03:49:08,709 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93b43bd4-eb55-4d95-93d8-122e27127bf5/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 03:49:08,710 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93b43bd4-eb55-4d95-93d8-122e27127bf5/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 03:49:08,724 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93b43bd4-eb55-4d95-93d8-122e27127bf5/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-23 03:49:10,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:49:10,877 INFO L263 TraceCheckSpWp]: Trace formula consists of 3035 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-23 03:49:10,881 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 03:49:10,919 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-23 03:49:10,920 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 03:49:10,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:49:10,920 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400864973] [2022-11-23 03:49:10,920 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-23 03:49:10,920 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1230522217] [2022-11-23 03:49:10,921 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1230522217] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:49:10,921 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:49:10,921 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 03:49:10,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695651608] [2022-11-23 03:49:10,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:49:10,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 03:49:10,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:49:10,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 03:49:10,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 03:49:10,923 INFO L87 Difference]: Start difference. First operand 269 states and 329 transitions. Second operand has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:49:10,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:49:10,979 INFO L93 Difference]: Finished difference Result 347 states and 425 transitions. [2022-11-23 03:49:10,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 03:49:10,980 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 140 [2022-11-23 03:49:10,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:49:10,981 INFO L225 Difference]: With dead ends: 347 [2022-11-23 03:49:10,982 INFO L226 Difference]: Without dead ends: 264 [2022-11-23 03:49:10,982 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 137 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 03:49:10,983 INFO L413 NwaCegarLoop]: 290 mSDtfsCounter, 63 mSDsluCounter, 505 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 795 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 03:49:10,983 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 795 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 03:49:10,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2022-11-23 03:49:10,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 260. [2022-11-23 03:49:10,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 260 states, 245 states have (on average 1.1959183673469387) internal successors, (293), 251 states have internal predecessors, (293), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2022-11-23 03:49:10,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 315 transitions. [2022-11-23 03:49:10,994 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 315 transitions. Word has length 140 [2022-11-23 03:49:10,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:49:10,995 INFO L495 AbstractCegarLoop]: Abstraction has 260 states and 315 transitions. [2022-11-23 03:49:10,995 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:49:10,995 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 315 transitions. [2022-11-23 03:49:10,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2022-11-23 03:49:10,997 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:49:10,997 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:49:11,012 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93b43bd4-eb55-4d95-93d8-122e27127bf5/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-23 03:49:11,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93b43bd4-eb55-4d95-93d8-122e27127bf5/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 03:49:11,203 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:49:11,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:49:11,203 INFO L85 PathProgramCache]: Analyzing trace with hash 413654475, now seen corresponding path program 1 times [2022-11-23 03:49:11,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:49:11,203 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498704844] [2022-11-23 03:49:11,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:49:11,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:49:11,398 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-23 03:49:11,398 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [349471142] [2022-11-23 03:49:11,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:49:11,399 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 03:49:11,399 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93b43bd4-eb55-4d95-93d8-122e27127bf5/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 03:49:11,400 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93b43bd4-eb55-4d95-93d8-122e27127bf5/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 03:49:11,419 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93b43bd4-eb55-4d95-93d8-122e27127bf5/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-23 03:49:13,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:49:13,858 INFO L263 TraceCheckSpWp]: Trace formula consists of 3037 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-23 03:49:13,863 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 03:49:14,065 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:49:14,066 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 03:49:14,267 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:49:14,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:49:14,267 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [498704844] [2022-11-23 03:49:14,267 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-23 03:49:14,268 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [349471142] [2022-11-23 03:49:14,268 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [349471142] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 03:49:14,268 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-23 03:49:14,268 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2022-11-23 03:49:14,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90372216] [2022-11-23 03:49:14,269 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-23 03:49:14,269 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-23 03:49:14,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:49:14,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-23 03:49:14,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-23 03:49:14,270 INFO L87 Difference]: Start difference. First operand 260 states and 315 transitions. Second operand has 6 states, 6 states have (on average 40.0) internal successors, (240), 6 states have internal predecessors, (240), 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 03:49:14,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:49:14,437 INFO L93 Difference]: Finished difference Result 1005 states and 1227 transitions. [2022-11-23 03:49:14,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 03:49:14,438 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 40.0) internal successors, (240), 6 states have internal predecessors, (240), 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 140 [2022-11-23 03:49:14,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:49:14,442 INFO L225 Difference]: With dead ends: 1005 [2022-11-23 03:49:14,442 INFO L226 Difference]: Without dead ends: 930 [2022-11-23 03:49:14,443 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 278 GetRequests, 274 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-23 03:49:14,444 INFO L413 NwaCegarLoop]: 403 mSDtfsCounter, 1243 mSDsluCounter, 781 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1282 SdHoareTripleChecker+Valid, 1184 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 03:49:14,444 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1282 Valid, 1184 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 03:49:14,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 930 states. [2022-11-23 03:49:14,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 930 to 794. [2022-11-23 03:49:14,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 794 states, 761 states have (on average 1.1892247043363995) internal successors, (905), 767 states have internal predecessors, (905), 29 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (29), 25 states have call predecessors, (29), 29 states have call successors, (29) [2022-11-23 03:49:14,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 794 states to 794 states and 963 transitions. [2022-11-23 03:49:14,476 INFO L78 Accepts]: Start accepts. Automaton has 794 states and 963 transitions. Word has length 140 [2022-11-23 03:49:14,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:49:14,477 INFO L495 AbstractCegarLoop]: Abstraction has 794 states and 963 transitions. [2022-11-23 03:49:14,477 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 40.0) internal successors, (240), 6 states have internal predecessors, (240), 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 03:49:14,477 INFO L276 IsEmpty]: Start isEmpty. Operand 794 states and 963 transitions. [2022-11-23 03:49:14,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 435 [2022-11-23 03:49:14,486 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:49:14,487 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:49:14,512 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93b43bd4-eb55-4d95-93d8-122e27127bf5/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-23 03:49:14,711 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93b43bd4-eb55-4d95-93d8-122e27127bf5/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-23 03:49:14,712 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:49:14,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:49:14,712 INFO L85 PathProgramCache]: Analyzing trace with hash 1488887653, now seen corresponding path program 2 times [2022-11-23 03:49:14,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:49:14,712 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506119524] [2022-11-23 03:49:14,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:49:14,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:49:15,452 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-23 03:49:15,452 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [804175464] [2022-11-23 03:49:15,452 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-23 03:49:15,452 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 03:49:15,453 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93b43bd4-eb55-4d95-93d8-122e27127bf5/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 03:49:15,454 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93b43bd4-eb55-4d95-93d8-122e27127bf5/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 03:49:15,457 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93b43bd4-eb55-4d95-93d8-122e27127bf5/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-23 03:49:20,855 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-23 03:49:20,855 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 03:49:20,931 INFO L263 TraceCheckSpWp]: Trace formula consists of 11749 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-23 03:49:20,941 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 03:49:21,568 INFO L134 CoverageAnalysis]: Checked inductivity of 592 backedges. 0 proven. 592 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:49:21,568 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 03:49:22,302 INFO L134 CoverageAnalysis]: Checked inductivity of 592 backedges. 0 proven. 592 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:49:22,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:49:22,302 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [506119524] [2022-11-23 03:49:22,302 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-23 03:49:22,303 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [804175464] [2022-11-23 03:49:22,303 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [804175464] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 03:49:22,303 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-23 03:49:22,303 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2022-11-23 03:49:22,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527193426] [2022-11-23 03:49:22,304 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-23 03:49:22,305 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-23 03:49:22,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:49:22,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-23 03:49:22,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2022-11-23 03:49:22,306 INFO L87 Difference]: Start difference. First operand 794 states and 963 transitions. Second operand has 12 states, 12 states have (on average 69.0) internal successors, (828), 12 states have internal predecessors, (828), 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 03:49:22,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:49:22,840 INFO L93 Difference]: Finished difference Result 2277 states and 2781 transitions. [2022-11-23 03:49:22,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-23 03:49:22,841 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 69.0) internal successors, (828), 12 states have internal predecessors, (828), 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 434 [2022-11-23 03:49:22,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:49:22,850 INFO L225 Difference]: With dead ends: 2277 [2022-11-23 03:49:22,850 INFO L226 Difference]: Without dead ends: 2202 [2022-11-23 03:49:22,851 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 866 GetRequests, 856 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2022-11-23 03:49:22,852 INFO L413 NwaCegarLoop]: 466 mSDtfsCounter, 3171 mSDsluCounter, 2549 mSDsCounter, 0 mSdLazyCounter, 225 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3261 SdHoareTripleChecker+Valid, 3015 SdHoareTripleChecker+Invalid, 317 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 225 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-23 03:49:22,852 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3261 Valid, 3015 Invalid, 317 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [92 Valid, 225 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-23 03:49:22,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2202 states. [2022-11-23 03:49:22,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2202 to 1862. [2022-11-23 03:49:22,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1862 states, 1793 states have (on average 1.1873954266592304) internal successors, (2129), 1799 states have internal predecessors, (2129), 65 states have call successors, (65), 2 states have call predecessors, (65), 2 states have return successors, (65), 61 states have call predecessors, (65), 65 states have call successors, (65) [2022-11-23 03:49:22,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1862 states to 1862 states and 2259 transitions. [2022-11-23 03:49:22,924 INFO L78 Accepts]: Start accepts. Automaton has 1862 states and 2259 transitions. Word has length 434 [2022-11-23 03:49:22,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:49:22,924 INFO L495 AbstractCegarLoop]: Abstraction has 1862 states and 2259 transitions. [2022-11-23 03:49:22,925 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 69.0) internal successors, (828), 12 states have internal predecessors, (828), 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 03:49:22,925 INFO L276 IsEmpty]: Start isEmpty. Operand 1862 states and 2259 transitions. [2022-11-23 03:49:22,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1023 [2022-11-23 03:49:22,964 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:49:22,965 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:49:23,002 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93b43bd4-eb55-4d95-93d8-122e27127bf5/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-23 03:49:23,178 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93b43bd4-eb55-4d95-93d8-122e27127bf5/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-23 03:49:23,179 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:49:23,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:49:23,180 INFO L85 PathProgramCache]: Analyzing trace with hash -268896231, now seen corresponding path program 3 times [2022-11-23 03:49:23,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:49:23,180 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270772457] [2022-11-23 03:49:23,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:49:23,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:49:24,973 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-23 03:49:24,974 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1227500370] [2022-11-23 03:49:24,974 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-23 03:49:24,974 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 03:49:24,974 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93b43bd4-eb55-4d95-93d8-122e27127bf5/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 03:49:24,983 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93b43bd4-eb55-4d95-93d8-122e27127bf5/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 03:49:24,986 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93b43bd4-eb55-4d95-93d8-122e27127bf5/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-23 03:49:31,977 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-23 03:49:31,977 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 03:49:32,009 INFO L263 TraceCheckSpWp]: Trace formula consists of 3037 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-23 03:49:32,030 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 03:49:35,505 INFO L134 CoverageAnalysis]: Checked inductivity of 4420 backedges. 568 proven. 0 refuted. 0 times theorem prover too weak. 3852 trivial. 0 not checked. [2022-11-23 03:49:35,505 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 03:49:35,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:49:35,505 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270772457] [2022-11-23 03:49:35,506 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-23 03:49:35,506 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1227500370] [2022-11-23 03:49:35,506 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1227500370] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:49:35,506 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:49:35,506 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 03:49:35,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725830564] [2022-11-23 03:49:35,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:49:35,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 03:49:35,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:49:35,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 03:49:35,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 03:49:35,509 INFO L87 Difference]: Start difference. First operand 1862 states and 2259 transitions. Second operand has 3 states, 3 states have (on average 67.66666666666667) internal successors, (203), 3 states have internal predecessors, (203), 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 03:49:35,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:49:35,608 INFO L93 Difference]: Finished difference Result 3666 states and 4452 transitions. [2022-11-23 03:49:35,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 03:49:35,611 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 67.66666666666667) internal successors, (203), 3 states have internal predecessors, (203), 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 1022 [2022-11-23 03:49:35,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:49:35,617 INFO L225 Difference]: With dead ends: 3666 [2022-11-23 03:49:35,618 INFO L226 Difference]: Without dead ends: 1860 [2022-11-23 03:49:35,620 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1021 GetRequests, 1020 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 03:49:35,621 INFO L413 NwaCegarLoop]: 301 mSDtfsCounter, 15 mSDsluCounter, 286 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 587 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 03:49:35,622 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 587 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 03:49:35,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1860 states. [2022-11-23 03:49:35,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1860 to 1860. [2022-11-23 03:49:35,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1860 states, 1791 states have (on average 1.1870463428252374) internal successors, (2126), 1797 states have internal predecessors, (2126), 65 states have call successors, (65), 2 states have call predecessors, (65), 2 states have return successors, (65), 61 states have call predecessors, (65), 65 states have call successors, (65) [2022-11-23 03:49:35,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1860 states to 1860 states and 2256 transitions. [2022-11-23 03:49:35,689 INFO L78 Accepts]: Start accepts. Automaton has 1860 states and 2256 transitions. Word has length 1022 [2022-11-23 03:49:35,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:49:35,689 INFO L495 AbstractCegarLoop]: Abstraction has 1860 states and 2256 transitions. [2022-11-23 03:49:35,690 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 67.66666666666667) internal successors, (203), 3 states have internal predecessors, (203), 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 03:49:35,690 INFO L276 IsEmpty]: Start isEmpty. Operand 1860 states and 2256 transitions. [2022-11-23 03:49:35,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1038 [2022-11-23 03:49:35,704 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:49:35,704 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 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] [2022-11-23 03:49:35,731 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93b43bd4-eb55-4d95-93d8-122e27127bf5/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-23 03:49:35,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93b43bd4-eb55-4d95-93d8-122e27127bf5/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 03:49:35,931 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:49:35,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:49:35,932 INFO L85 PathProgramCache]: Analyzing trace with hash 1557386042, now seen corresponding path program 1 times [2022-11-23 03:49:35,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:49:35,932 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1370321469] [2022-11-23 03:49:35,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:49:35,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:49:38,092 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-23 03:49:38,092 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [107715898] [2022-11-23 03:49:38,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:49:38,092 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 03:49:38,093 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93b43bd4-eb55-4d95-93d8-122e27127bf5/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 03:49:38,094 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93b43bd4-eb55-4d95-93d8-122e27127bf5/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 03:49:38,101 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93b43bd4-eb55-4d95-93d8-122e27127bf5/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-23 03:49:51,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:49:52,087 INFO L263 TraceCheckSpWp]: Trace formula consists of 28310 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-23 03:49:52,113 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 03:49:52,451 INFO L134 CoverageAnalysis]: Checked inductivity of 4406 backedges. 730 proven. 0 refuted. 0 times theorem prover too weak. 3676 trivial. 0 not checked. [2022-11-23 03:49:52,451 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 03:49:52,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:49:52,451 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1370321469] [2022-11-23 03:49:52,451 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-23 03:49:52,451 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [107715898] [2022-11-23 03:49:52,451 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [107715898] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:49:52,451 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:49:52,452 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 03:49:52,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480867268] [2022-11-23 03:49:52,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:49:52,453 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 03:49:52,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:49:52,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 03:49:52,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 03:49:52,454 INFO L87 Difference]: Start difference. First operand 1860 states and 2256 transitions. Second operand has 3 states, 3 states have (on average 77.0) internal successors, (231), 3 states have internal predecessors, (231), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-23 03:49:52,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:49:52,570 INFO L93 Difference]: Finished difference Result 3629 states and 4406 transitions. [2022-11-23 03:49:52,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 03:49:52,572 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 77.0) internal successors, (231), 3 states have internal predecessors, (231), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 1037 [2022-11-23 03:49:52,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:49:52,579 INFO L225 Difference]: With dead ends: 3629 [2022-11-23 03:49:52,579 INFO L226 Difference]: Without dead ends: 1910 [2022-11-23 03:49:52,583 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1036 GetRequests, 1035 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 03:49:52,585 INFO L413 NwaCegarLoop]: 342 mSDtfsCounter, 105 mSDsluCounter, 280 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 622 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 03:49:52,585 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 622 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 03:49:52,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1910 states. [2022-11-23 03:49:52,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1910 to 1908. [2022-11-23 03:49:52,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1908 states, 1834 states have (on average 1.1853871319520175) internal successors, (2174), 1845 states have internal predecessors, (2174), 70 states have call successors, (70), 2 states have call predecessors, (70), 2 states have return successors, (70), 62 states have call predecessors, (70), 70 states have call successors, (70) [2022-11-23 03:49:52,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1908 states to 1908 states and 2314 transitions. [2022-11-23 03:49:52,657 INFO L78 Accepts]: Start accepts. Automaton has 1908 states and 2314 transitions. Word has length 1037 [2022-11-23 03:49:52,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:49:52,658 INFO L495 AbstractCegarLoop]: Abstraction has 1908 states and 2314 transitions. [2022-11-23 03:49:52,658 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 77.0) internal successors, (231), 3 states have internal predecessors, (231), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-23 03:49:52,659 INFO L276 IsEmpty]: Start isEmpty. Operand 1908 states and 2314 transitions. [2022-11-23 03:49:52,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1053 [2022-11-23 03:49:52,680 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:49:52,681 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:49:52,776 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93b43bd4-eb55-4d95-93d8-122e27127bf5/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-23 03:49:52,902 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93b43bd4-eb55-4d95-93d8-122e27127bf5/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 03:49:52,903 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:49:52,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:49:52,903 INFO L85 PathProgramCache]: Analyzing trace with hash -1732691376, now seen corresponding path program 1 times [2022-11-23 03:49:52,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:49:52,904 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908298119] [2022-11-23 03:49:52,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:49:52,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:49:54,706 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-23 03:49:54,706 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [386454849] [2022-11-23 03:49:54,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:49:54,707 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 03:49:54,707 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93b43bd4-eb55-4d95-93d8-122e27127bf5/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 03:49:54,717 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93b43bd4-eb55-4d95-93d8-122e27127bf5/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 03:49:54,724 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93b43bd4-eb55-4d95-93d8-122e27127bf5/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-23 03:50:09,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:50:10,025 INFO L263 TraceCheckSpWp]: Trace formula consists of 27447 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-23 03:50:10,056 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 03:50:13,390 INFO L134 CoverageAnalysis]: Checked inductivity of 4408 backedges. 1431 proven. 0 refuted. 0 times theorem prover too weak. 2977 trivial. 0 not checked. [2022-11-23 03:50:13,391 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 03:50:13,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:50:13,391 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1908298119] [2022-11-23 03:50:13,391 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-23 03:50:13,392 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [386454849] [2022-11-23 03:50:13,392 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [386454849] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:50:13,392 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:50:13,392 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 03:50:13,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630350843] [2022-11-23 03:50:13,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:50:13,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 03:50:13,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:50:13,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 03:50:13,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 03:50:13,395 INFO L87 Difference]: Start difference. First operand 1908 states and 2314 transitions. Second operand has 3 states, 3 states have (on average 85.0) internal successors, (255), 3 states have internal predecessors, (255), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-23 03:50:13,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:50:13,551 INFO L93 Difference]: Finished difference Result 4737 states and 5750 transitions. [2022-11-23 03:50:13,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 03:50:13,551 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 85.0) internal successors, (255), 3 states have internal predecessors, (255), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 1052 [2022-11-23 03:50:13,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:50:13,566 INFO L225 Difference]: With dead ends: 4737 [2022-11-23 03:50:13,566 INFO L226 Difference]: Without dead ends: 3317 [2022-11-23 03:50:13,569 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1051 GetRequests, 1050 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 03:50:13,570 INFO L413 NwaCegarLoop]: 461 mSDtfsCounter, 127 mSDsluCounter, 273 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 734 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 03:50:13,570 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 734 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 03:50:13,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3317 states. [2022-11-23 03:50:13,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3317 to 3315. [2022-11-23 03:50:13,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3315 states, 3208 states have (on average 1.186720698254364) internal successors, (3807), 3219 states have internal predecessors, (3807), 103 states have call successors, (103), 2 states have call predecessors, (103), 2 states have return successors, (103), 95 states have call predecessors, (103), 103 states have call successors, (103) [2022-11-23 03:50:13,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3315 states to 3315 states and 4013 transitions. [2022-11-23 03:50:13,712 INFO L78 Accepts]: Start accepts. Automaton has 3315 states and 4013 transitions. Word has length 1052 [2022-11-23 03:50:13,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:50:13,714 INFO L495 AbstractCegarLoop]: Abstraction has 3315 states and 4013 transitions. [2022-11-23 03:50:13,715 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 85.0) internal successors, (255), 3 states have internal predecessors, (255), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-23 03:50:13,715 INFO L276 IsEmpty]: Start isEmpty. Operand 3315 states and 4013 transitions. [2022-11-23 03:50:13,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1060 [2022-11-23 03:50:13,733 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:50:13,733 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:50:13,849 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93b43bd4-eb55-4d95-93d8-122e27127bf5/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-11-23 03:50:13,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93b43bd4-eb55-4d95-93d8-122e27127bf5/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-23 03:50:13,957 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:50:13,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:50:13,958 INFO L85 PathProgramCache]: Analyzing trace with hash 118894542, now seen corresponding path program 1 times [2022-11-23 03:50:13,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:50:13,958 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465552768] [2022-11-23 03:50:13,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:50:13,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:50:15,997 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-23 03:50:15,997 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1378232679] [2022-11-23 03:50:15,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:50:15,998 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 03:50:15,998 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93b43bd4-eb55-4d95-93d8-122e27127bf5/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 03:50:16,000 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93b43bd4-eb55-4d95-93d8-122e27127bf5/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 03:50:16,002 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93b43bd4-eb55-4d95-93d8-122e27127bf5/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process