./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test4-3.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ae7db91-de54-4119-ac4a-1722e9d2f6ed/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ae7db91-de54-4119-ac4a-1722e9d2f6ed/bin/uautomizer-DrprNOufMa/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ae7db91-de54-4119-ac4a-1722e9d2f6ed/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ae7db91-de54-4119-ac4a-1722e9d2f6ed/bin/uautomizer-DrprNOufMa/config/AutomizerReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test4-3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ae7db91-de54-4119-ac4a-1722e9d2f6ed/bin/uautomizer-DrprNOufMa/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ae7db91-de54-4119-ac4a-1722e9d2f6ed/bin/uautomizer-DrprNOufMa --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 2dcad53e9f7fd6e0b6384d19db4719ec6aa2601fd94c6ce0d3c746f1ec6b3601 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-07 01:28:54,209 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-07 01:28:54,211 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-07 01:28:54,243 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-07 01:28:54,243 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-07 01:28:54,245 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-07 01:28:54,246 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-07 01:28:54,249 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-07 01:28:54,251 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-07 01:28:54,252 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-07 01:28:54,252 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-07 01:28:54,253 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-07 01:28:54,254 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-07 01:28:54,255 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-07 01:28:54,256 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-07 01:28:54,257 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-07 01:28:54,257 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-07 01:28:54,258 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-07 01:28:54,260 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-07 01:28:54,261 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-07 01:28:54,263 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-07 01:28:54,264 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-07 01:28:54,265 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-07 01:28:54,266 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-07 01:28:54,268 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-07 01:28:54,269 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-07 01:28:54,269 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-07 01:28:54,270 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-07 01:28:54,270 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-07 01:28:54,271 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-07 01:28:54,271 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-07 01:28:54,272 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-07 01:28:54,273 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-07 01:28:54,273 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-07 01:28:54,274 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-07 01:28:54,274 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-07 01:28:54,275 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-07 01:28:54,275 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-07 01:28:54,276 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-07 01:28:54,276 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-07 01:28:54,277 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-07 01:28:54,278 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ae7db91-de54-4119-ac4a-1722e9d2f6ed/bin/uautomizer-DrprNOufMa/config/svcomp-Overflow-32bit-Automizer_Default.epf [2021-12-07 01:28:54,294 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-07 01:28:54,295 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-07 01:28:54,295 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-07 01:28:54,295 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-07 01:28:54,295 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-07 01:28:54,296 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-07 01:28:54,296 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-07 01:28:54,296 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-07 01:28:54,296 INFO L138 SettingsManager]: * Use SBE=true [2021-12-07 01:28:54,296 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-07 01:28:54,297 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-07 01:28:54,297 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-07 01:28:54,297 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-07 01:28:54,297 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-07 01:28:54,297 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-07 01:28:54,297 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-07 01:28:54,297 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-07 01:28:54,297 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-07 01:28:54,298 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-12-07 01:28:54,298 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-07 01:28:54,298 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-07 01:28:54,298 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-07 01:28:54,298 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-07 01:28:54,298 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-07 01:28:54,298 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-07 01:28:54,298 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-07 01:28:54,299 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-07 01:28:54,299 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-07 01:28:54,299 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-07 01:28:54,299 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-07 01:28:54,299 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-07 01:28:54,299 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-07 01:28:54,299 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-07 01:28:54,299 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-07 01:28:54,300 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ae7db91-de54-4119-ac4a-1722e9d2f6ed/bin/uautomizer-DrprNOufMa/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ae7db91-de54-4119-ac4a-1722e9d2f6ed/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2dcad53e9f7fd6e0b6384d19db4719ec6aa2601fd94c6ce0d3c746f1ec6b3601 [2021-12-07 01:28:54,460 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-07 01:28:54,475 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-07 01:28:54,477 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-07 01:28:54,477 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-07 01:28:54,478 INFO L275 PluginConnector]: CDTParser initialized [2021-12-07 01:28:54,479 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ae7db91-de54-4119-ac4a-1722e9d2f6ed/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test4-3.i [2021-12-07 01:28:54,530 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ae7db91-de54-4119-ac4a-1722e9d2f6ed/bin/uautomizer-DrprNOufMa/data/ae6567cb1/d0200572e3244f1b9770b96d2cc273ce/FLAG468dc4e74 [2021-12-07 01:28:55,041 INFO L306 CDTParser]: Found 1 translation units. [2021-12-07 01:28:55,041 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ae7db91-de54-4119-ac4a-1722e9d2f6ed/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test4-3.i [2021-12-07 01:28:55,054 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ae7db91-de54-4119-ac4a-1722e9d2f6ed/bin/uautomizer-DrprNOufMa/data/ae6567cb1/d0200572e3244f1b9770b96d2cc273ce/FLAG468dc4e74 [2021-12-07 01:28:55,506 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ae7db91-de54-4119-ac4a-1722e9d2f6ed/bin/uautomizer-DrprNOufMa/data/ae6567cb1/d0200572e3244f1b9770b96d2cc273ce [2021-12-07 01:28:55,509 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-07 01:28:55,510 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-07 01:28:55,511 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-07 01:28:55,512 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-07 01:28:55,515 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-07 01:28:55,516 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 01:28:55" (1/1) ... [2021-12-07 01:28:55,517 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4dee4b8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:28:55, skipping insertion in model container [2021-12-07 01:28:55,517 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 01:28:55" (1/1) ... [2021-12-07 01:28:55,523 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-07 01:28:55,568 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-07 01:28:55,811 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ae7db91-de54-4119-ac4a-1722e9d2f6ed/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test4-3.i[33021,33034] [2021-12-07 01:28:55,900 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-07 01:28:55,906 INFO L203 MainTranslator]: Completed pre-run [2021-12-07 01:28:55,930 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ae7db91-de54-4119-ac4a-1722e9d2f6ed/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test4-3.i[33021,33034] [2021-12-07 01:28:55,983 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-07 01:28:56,016 INFO L208 MainTranslator]: Completed translation [2021-12-07 01:28:56,016 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:28:56 WrapperNode [2021-12-07 01:28:56,016 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-07 01:28:56,017 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-07 01:28:56,017 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-07 01:28:56,017 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-07 01:28:56,023 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:28:56" (1/1) ... [2021-12-07 01:28:56,057 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:28:56" (1/1) ... [2021-12-07 01:28:56,116 INFO L137 Inliner]: procedures = 177, calls = 448, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1451 [2021-12-07 01:28:56,117 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-07 01:28:56,117 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-07 01:28:56,117 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-07 01:28:56,118 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-07 01:28:56,126 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:28:56" (1/1) ... [2021-12-07 01:28:56,126 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:28:56" (1/1) ... [2021-12-07 01:28:56,136 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:28:56" (1/1) ... [2021-12-07 01:28:56,136 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:28:56" (1/1) ... [2021-12-07 01:28:56,194 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:28:56" (1/1) ... [2021-12-07 01:28:56,207 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:28:56" (1/1) ... [2021-12-07 01:28:56,216 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:28:56" (1/1) ... [2021-12-07 01:28:56,230 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-07 01:28:56,230 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-07 01:28:56,231 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-07 01:28:56,231 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-07 01:28:56,231 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:28:56" (1/1) ... [2021-12-07 01:28:56,238 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-07 01:28:56,247 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ae7db91-de54-4119-ac4a-1722e9d2f6ed/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:28:56,258 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ae7db91-de54-4119-ac4a-1722e9d2f6ed/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-07 01:28:56,260 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ae7db91-de54-4119-ac4a-1722e9d2f6ed/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-07 01:28:56,287 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-07 01:28:56,288 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-12-07 01:28:56,288 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-12-07 01:28:56,288 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-07 01:28:56,288 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-12-07 01:28:56,288 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-12-07 01:28:56,288 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-07 01:28:56,288 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-07 01:28:56,288 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-07 01:28:56,288 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-07 01:28:56,288 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-07 01:28:56,289 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-07 01:28:56,289 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-07 01:28:56,289 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-07 01:28:56,289 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-07 01:28:56,446 INFO L236 CfgBuilder]: Building ICFG [2021-12-07 01:28:56,448 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-07 01:28:57,325 INFO L277 CfgBuilder]: Performing block encoding [2021-12-07 01:28:57,335 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-07 01:28:57,336 INFO L301 CfgBuilder]: Removed 77 assume(true) statements. [2021-12-07 01:28:57,338 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 01:28:57 BoogieIcfgContainer [2021-12-07 01:28:57,338 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-07 01:28:57,340 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-07 01:28:57,340 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-07 01:28:57,344 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-07 01:28:57,344 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 01:28:55" (1/3) ... [2021-12-07 01:28:57,344 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d49449d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 01:28:57, skipping insertion in model container [2021-12-07 01:28:57,345 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:28:56" (2/3) ... [2021-12-07 01:28:57,345 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d49449d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 01:28:57, skipping insertion in model container [2021-12-07 01:28:57,345 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 01:28:57" (3/3) ... [2021-12-07 01:28:57,346 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_BER_test4-3.i [2021-12-07 01:28:57,352 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-07 01:28:57,352 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-12-07 01:28:57,391 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-07 01:28:57,397 INFO L339 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=FINITE_AUTOMATA, 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, mLoopAccelerationTechnique=FAST_UPR [2021-12-07 01:28:57,397 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-12-07 01:28:57,418 INFO L276 IsEmpty]: Start isEmpty. Operand has 271 states, 246 states have (on average 1.6951219512195121) internal successors, (417), 262 states have internal predecessors, (417), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2021-12-07 01:28:57,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-12-07 01:28:57,421 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:28:57,421 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-12-07 01:28:57,421 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-07 01:28:57,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:28:57,425 INFO L85 PathProgramCache]: Analyzing trace with hash 1126982839, now seen corresponding path program 1 times [2021-12-07 01:28:57,432 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:28:57,433 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864220566] [2021-12-07 01:28:57,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:28:57,433 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:28:57,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:28:57,556 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:28:57,556 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:28:57,556 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864220566] [2021-12-07 01:28:57,557 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1864220566] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:28:57,557 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:28:57,557 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-07 01:28:57,558 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598959752] [2021-12-07 01:28:57,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:28:57,562 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 01:28:57,562 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:28:57,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 01:28:57,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 01:28:57,585 INFO L87 Difference]: Start difference. First operand has 271 states, 246 states have (on average 1.6951219512195121) internal successors, (417), 262 states have internal predecessors, (417), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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) [2021-12-07 01:28:57,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:28:57,686 INFO L93 Difference]: Finished difference Result 715 states and 1205 transitions. [2021-12-07 01:28:57,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 01:28:57,688 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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 6 [2021-12-07 01:28:57,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:28:57,698 INFO L225 Difference]: With dead ends: 715 [2021-12-07 01:28:57,698 INFO L226 Difference]: Without dead ends: 392 [2021-12-07 01:28:57,702 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 01:28:57,705 INFO L933 BasicCegarLoop]: 370 mSDtfsCounter, 217 mSDsluCounter, 355 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 223 SdHoareTripleChecker+Valid, 725 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 01:28:57,705 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [223 Valid, 725 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 01:28:57,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 392 states. [2021-12-07 01:28:57,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 392 to 220. [2021-12-07 01:28:57,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220 states, 197 states have (on average 1.3299492385786802) internal successors, (262), 211 states have internal predecessors, (262), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2021-12-07 01:28:57,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 294 transitions. [2021-12-07 01:28:57,752 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 294 transitions. Word has length 6 [2021-12-07 01:28:57,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:28:57,752 INFO L470 AbstractCegarLoop]: Abstraction has 220 states and 294 transitions. [2021-12-07 01:28:57,752 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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) [2021-12-07 01:28:57,752 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 294 transitions. [2021-12-07 01:28:57,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-12-07 01:28:57,757 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:28:57,757 INFO L514 BasicCegarLoop]: 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] [2021-12-07 01:28:57,757 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-07 01:28:57,757 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-07 01:28:57,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:28:57,758 INFO L85 PathProgramCache]: Analyzing trace with hash 765811442, now seen corresponding path program 1 times [2021-12-07 01:28:57,758 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:28:57,758 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1318453555] [2021-12-07 01:28:57,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:28:57,759 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:28:57,929 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-07 01:28:57,930 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1386257943] [2021-12-07 01:28:57,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:28:57,930 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:28:57,931 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ae7db91-de54-4119-ac4a-1722e9d2f6ed/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:28:57,931 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ae7db91-de54-4119-ac4a-1722e9d2f6ed/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 01:28:57,932 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ae7db91-de54-4119-ac4a-1722e9d2f6ed/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-07 01:28:58,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:28:58,594 INFO L263 TraceCheckSpWp]: Trace formula consists of 2954 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-07 01:28:58,605 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:28:58,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:28:58,717 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 01:28:58,717 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:28:58,717 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1318453555] [2021-12-07 01:28:58,717 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-07 01:28:58,718 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1386257943] [2021-12-07 01:28:58,718 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1386257943] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:28:58,718 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:28:58,718 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-07 01:28:58,719 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851612875] [2021-12-07 01:28:58,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:28:58,719 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 01:28:58,719 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:28:58,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 01:28:58,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 01:28:58,720 INFO L87 Difference]: Start difference. First operand 220 states and 294 transitions. Second operand has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 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) [2021-12-07 01:28:58,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:28:58,775 INFO L93 Difference]: Finished difference Result 455 states and 613 transitions. [2021-12-07 01:28:58,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 01:28:58,776 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 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 103 [2021-12-07 01:28:58,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:28:58,779 INFO L225 Difference]: With dead ends: 455 [2021-12-07 01:28:58,779 INFO L226 Difference]: Without dead ends: 241 [2021-12-07 01:28:58,780 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 01:28:58,781 INFO L933 BasicCegarLoop]: 270 mSDtfsCounter, 9 mSDsluCounter, 255 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 525 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 01:28:58,782 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 525 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 01:28:58,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2021-12-07 01:28:58,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 240. [2021-12-07 01:28:58,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 240 states, 217 states have (on average 1.2995391705069124) internal successors, (282), 231 states have internal predecessors, (282), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2021-12-07 01:28:58,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 314 transitions. [2021-12-07 01:28:58,802 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 314 transitions. Word has length 103 [2021-12-07 01:28:58,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:28:58,803 INFO L470 AbstractCegarLoop]: Abstraction has 240 states and 314 transitions. [2021-12-07 01:28:58,803 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 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) [2021-12-07 01:28:58,803 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 314 transitions. [2021-12-07 01:28:58,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-12-07 01:28:58,808 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:28:58,808 INFO L514 BasicCegarLoop]: 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] [2021-12-07 01:28:58,832 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ae7db91-de54-4119-ac4a-1722e9d2f6ed/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-07 01:28:59,008 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ae7db91-de54-4119-ac4a-1722e9d2f6ed/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:28:59,009 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-07 01:28:59,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:28:59,010 INFO L85 PathProgramCache]: Analyzing trace with hash 525571696, now seen corresponding path program 1 times [2021-12-07 01:28:59,010 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:28:59,010 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601896457] [2021-12-07 01:28:59,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:28:59,010 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:28:59,143 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-07 01:28:59,144 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1489942580] [2021-12-07 01:28:59,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:28:59,144 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:28:59,144 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ae7db91-de54-4119-ac4a-1722e9d2f6ed/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:28:59,145 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ae7db91-de54-4119-ac4a-1722e9d2f6ed/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 01:28:59,145 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ae7db91-de54-4119-ac4a-1722e9d2f6ed/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-07 01:28:59,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:28:59,810 INFO L263 TraceCheckSpWp]: Trace formula consists of 2956 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-07 01:28:59,817 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:28:59,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:28:59,915 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 01:28:59,915 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:28:59,915 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [601896457] [2021-12-07 01:28:59,915 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-07 01:28:59,915 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1489942580] [2021-12-07 01:28:59,916 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1489942580] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:28:59,916 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:28:59,916 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-07 01:28:59,916 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66087706] [2021-12-07 01:28:59,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:28:59,917 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 01:28:59,917 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:28:59,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 01:28:59,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 01:28:59,918 INFO L87 Difference]: Start difference. First operand 240 states and 314 transitions. Second operand has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 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) [2021-12-07 01:28:59,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:28:59,964 INFO L93 Difference]: Finished difference Result 495 states and 653 transitions. [2021-12-07 01:28:59,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 01:28:59,965 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 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 103 [2021-12-07 01:28:59,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:28:59,968 INFO L225 Difference]: With dead ends: 495 [2021-12-07 01:28:59,968 INFO L226 Difference]: Without dead ends: 261 [2021-12-07 01:28:59,968 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 01:28:59,970 INFO L933 BasicCegarLoop]: 270 mSDtfsCounter, 9 mSDsluCounter, 255 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 525 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 01:28:59,970 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 525 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 01:28:59,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2021-12-07 01:28:59,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 260. [2021-12-07 01:28:59,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 260 states, 237 states have (on average 1.2742616033755274) internal successors, (302), 251 states have internal predecessors, (302), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2021-12-07 01:28:59,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 334 transitions. [2021-12-07 01:28:59,985 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 334 transitions. Word has length 103 [2021-12-07 01:28:59,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:28:59,986 INFO L470 AbstractCegarLoop]: Abstraction has 260 states and 334 transitions. [2021-12-07 01:28:59,986 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 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) [2021-12-07 01:28:59,986 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 334 transitions. [2021-12-07 01:28:59,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-12-07 01:28:59,989 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:28:59,989 INFO L514 BasicCegarLoop]: 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] [2021-12-07 01:29:00,012 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ae7db91-de54-4119-ac4a-1722e9d2f6ed/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-12-07 01:29:00,190 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ae7db91-de54-4119-ac4a-1722e9d2f6ed/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:29:00,191 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-07 01:29:00,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:29:00,193 INFO L85 PathProgramCache]: Analyzing trace with hash 919938482, now seen corresponding path program 1 times [2021-12-07 01:29:00,193 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:29:00,194 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667035793] [2021-12-07 01:29:00,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:29:00,195 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:29:00,398 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-07 01:29:00,399 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1060424762] [2021-12-07 01:29:00,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:29:00,399 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:29:00,399 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ae7db91-de54-4119-ac4a-1722e9d2f6ed/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:29:00,400 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ae7db91-de54-4119-ac4a-1722e9d2f6ed/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 01:29:00,401 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ae7db91-de54-4119-ac4a-1722e9d2f6ed/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-07 01:29:01,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:29:01,021 INFO L263 TraceCheckSpWp]: Trace formula consists of 2958 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-07 01:29:01,025 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:29:01,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:29:01,110 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 01:29:01,110 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:29:01,110 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [667035793] [2021-12-07 01:29:01,110 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-07 01:29:01,110 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1060424762] [2021-12-07 01:29:01,111 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1060424762] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:29:01,111 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:29:01,111 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-07 01:29:01,111 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040313782] [2021-12-07 01:29:01,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:29:01,112 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-07 01:29:01,112 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:29:01,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-07 01:29:01,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-07 01:29:01,113 INFO L87 Difference]: Start difference. First operand 260 states and 334 transitions. Second operand has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 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) [2021-12-07 01:29:01,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:29:01,159 INFO L93 Difference]: Finished difference Result 505 states and 653 transitions. [2021-12-07 01:29:01,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-07 01:29:01,159 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 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 103 [2021-12-07 01:29:01,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:29:01,161 INFO L225 Difference]: With dead ends: 505 [2021-12-07 01:29:01,161 INFO L226 Difference]: Without dead ends: 251 [2021-12-07 01:29:01,162 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-07 01:29:01,163 INFO L933 BasicCegarLoop]: 271 mSDtfsCounter, 239 mSDsluCounter, 291 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 255 SdHoareTripleChecker+Valid, 562 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 01:29:01,164 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [255 Valid, 562 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 01:29:01,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2021-12-07 01:29:01,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 246. [2021-12-07 01:29:01,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 246 states, 223 states have (on average 1.2600896860986548) internal successors, (281), 237 states have internal predecessors, (281), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2021-12-07 01:29:01,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 313 transitions. [2021-12-07 01:29:01,177 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 313 transitions. Word has length 103 [2021-12-07 01:29:01,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:29:01,177 INFO L470 AbstractCegarLoop]: Abstraction has 246 states and 313 transitions. [2021-12-07 01:29:01,178 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 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) [2021-12-07 01:29:01,178 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 313 transitions. [2021-12-07 01:29:01,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-12-07 01:29:01,179 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:29:01,180 INFO L514 BasicCegarLoop]: 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] [2021-12-07 01:29:01,216 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ae7db91-de54-4119-ac4a-1722e9d2f6ed/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-12-07 01:29:01,380 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ae7db91-de54-4119-ac4a-1722e9d2f6ed/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:29:01,381 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-07 01:29:01,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:29:01,383 INFO L85 PathProgramCache]: Analyzing trace with hash 6087360, now seen corresponding path program 1 times [2021-12-07 01:29:01,383 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:29:01,383 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1293937638] [2021-12-07 01:29:01,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:29:01,384 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:29:01,514 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-07 01:29:01,514 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [846157963] [2021-12-07 01:29:01,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:29:01,514 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:29:01,515 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ae7db91-de54-4119-ac4a-1722e9d2f6ed/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:29:01,515 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ae7db91-de54-4119-ac4a-1722e9d2f6ed/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 01:29:01,516 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ae7db91-de54-4119-ac4a-1722e9d2f6ed/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-07 01:29:02,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:29:02,254 INFO L263 TraceCheckSpWp]: Trace formula consists of 2944 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-07 01:29:02,267 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:29:02,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:29:02,371 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 01:29:02,371 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:29:02,371 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1293937638] [2021-12-07 01:29:02,372 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-07 01:29:02,372 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [846157963] [2021-12-07 01:29:02,372 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [846157963] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:29:02,372 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:29:02,372 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-07 01:29:02,373 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697116326] [2021-12-07 01:29:02,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:29:02,373 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-07 01:29:02,373 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:29:02,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-07 01:29:02,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-07 01:29:02,374 INFO L87 Difference]: Start difference. First operand 246 states and 313 transitions. Second operand has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 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) [2021-12-07 01:29:02,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:29:02,431 INFO L93 Difference]: Finished difference Result 566 states and 720 transitions. [2021-12-07 01:29:02,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-07 01:29:02,432 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 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 103 [2021-12-07 01:29:02,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:29:02,434 INFO L225 Difference]: With dead ends: 566 [2021-12-07 01:29:02,434 INFO L226 Difference]: Without dead ends: 326 [2021-12-07 01:29:02,435 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-07 01:29:02,436 INFO L933 BasicCegarLoop]: 367 mSDtfsCounter, 232 mSDsluCounter, 490 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 248 SdHoareTripleChecker+Valid, 857 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 01:29:02,436 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [248 Valid, 857 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 01:29:02,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2021-12-07 01:29:02,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 232. [2021-12-07 01:29:02,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232 states, 209 states have (on average 1.244019138755981) internal successors, (260), 223 states have internal predecessors, (260), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2021-12-07 01:29:02,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 292 transitions. [2021-12-07 01:29:02,448 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 292 transitions. Word has length 103 [2021-12-07 01:29:02,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:29:02,448 INFO L470 AbstractCegarLoop]: Abstraction has 232 states and 292 transitions. [2021-12-07 01:29:02,448 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 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) [2021-12-07 01:29:02,449 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 292 transitions. [2021-12-07 01:29:02,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-12-07 01:29:02,450 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:29:02,450 INFO L514 BasicCegarLoop]: 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] [2021-12-07 01:29:02,475 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ae7db91-de54-4119-ac4a-1722e9d2f6ed/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2021-12-07 01:29:02,651 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ae7db91-de54-4119-ac4a-1722e9d2f6ed/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:29:02,653 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-07 01:29:02,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:29:02,654 INFO L85 PathProgramCache]: Analyzing trace with hash 2030023538, now seen corresponding path program 1 times [2021-12-07 01:29:02,655 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:29:02,655 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409364274] [2021-12-07 01:29:02,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:29:02,656 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:29:02,793 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-07 01:29:02,794 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [320356843] [2021-12-07 01:29:02,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:29:02,794 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:29:02,794 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ae7db91-de54-4119-ac4a-1722e9d2f6ed/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:29:02,795 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ae7db91-de54-4119-ac4a-1722e9d2f6ed/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 01:29:02,795 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ae7db91-de54-4119-ac4a-1722e9d2f6ed/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-07 01:29:03,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:29:03,574 INFO L263 TraceCheckSpWp]: Trace formula consists of 2930 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-07 01:29:03,577 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:29:03,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:29:03,674 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 01:29:03,674 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:29:03,674 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [409364274] [2021-12-07 01:29:03,674 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-07 01:29:03,675 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [320356843] [2021-12-07 01:29:03,675 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [320356843] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:29:03,675 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:29:03,675 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-07 01:29:03,675 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454177531] [2021-12-07 01:29:03,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:29:03,675 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-07 01:29:03,676 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:29:03,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-07 01:29:03,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-07 01:29:03,676 INFO L87 Difference]: Start difference. First operand 232 states and 292 transitions. Second operand has 4 states, 3 states have (on average 34.333333333333336) internal successors, (103), 4 states have internal predecessors, (103), 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) [2021-12-07 01:29:03,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:29:03,715 INFO L93 Difference]: Finished difference Result 416 states and 516 transitions. [2021-12-07 01:29:03,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-07 01:29:03,715 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 34.333333333333336) internal successors, (103), 4 states have internal predecessors, (103), 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 103 [2021-12-07 01:29:03,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:29:03,718 INFO L225 Difference]: With dead ends: 416 [2021-12-07 01:29:03,718 INFO L226 Difference]: Without dead ends: 415 [2021-12-07 01:29:03,718 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-07 01:29:03,718 INFO L933 BasicCegarLoop]: 335 mSDtfsCounter, 105 mSDsluCounter, 601 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 936 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 01:29:03,719 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [111 Valid, 936 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 01:29:03,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 415 states. [2021-12-07 01:29:03,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 415 to 413. [2021-12-07 01:29:03,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 413 states, 384 states have (on average 1.2213541666666667) internal successors, (469), 398 states have internal predecessors, (469), 22 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (22), 13 states have call predecessors, (22), 22 states have call successors, (22) [2021-12-07 01:29:03,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 413 states to 413 states and 513 transitions. [2021-12-07 01:29:03,734 INFO L78 Accepts]: Start accepts. Automaton has 413 states and 513 transitions. Word has length 103 [2021-12-07 01:29:03,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:29:03,734 INFO L470 AbstractCegarLoop]: Abstraction has 413 states and 513 transitions. [2021-12-07 01:29:03,734 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 34.333333333333336) internal successors, (103), 4 states have internal predecessors, (103), 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) [2021-12-07 01:29:03,734 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states and 513 transitions. [2021-12-07 01:29:03,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-12-07 01:29:03,735 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:29:03,735 INFO L514 BasicCegarLoop]: 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] [2021-12-07 01:29:03,760 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ae7db91-de54-4119-ac4a-1722e9d2f6ed/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2021-12-07 01:29:03,936 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ae7db91-de54-4119-ac4a-1722e9d2f6ed/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-12-07 01:29:03,937 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-07 01:29:03,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:29:03,939 INFO L85 PathProgramCache]: Analyzing trace with hash -1493778997, now seen corresponding path program 1 times [2021-12-07 01:29:03,940 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:29:03,940 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203170854] [2021-12-07 01:29:03,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:29:03,941 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:29:04,066 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-07 01:29:04,066 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2030435481] [2021-12-07 01:29:04,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:29:04,066 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:29:04,066 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ae7db91-de54-4119-ac4a-1722e9d2f6ed/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:29:04,067 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ae7db91-de54-4119-ac4a-1722e9d2f6ed/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 01:29:04,068 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ae7db91-de54-4119-ac4a-1722e9d2f6ed/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-07 01:29:04,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:29:04,905 INFO L263 TraceCheckSpWp]: Trace formula consists of 2931 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-07 01:29:04,908 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:29:05,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:29:05,034 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 01:29:05,034 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:29:05,034 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [203170854] [2021-12-07 01:29:05,034 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-07 01:29:05,034 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2030435481] [2021-12-07 01:29:05,034 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2030435481] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:29:05,034 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:29:05,034 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-07 01:29:05,034 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604491462] [2021-12-07 01:29:05,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:29:05,035 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-07 01:29:05,035 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:29:05,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-07 01:29:05,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-07 01:29:05,035 INFO L87 Difference]: Start difference. First operand 413 states and 513 transitions. Second operand has 4 states, 3 states have (on average 34.666666666666664) internal successors, (104), 4 states have internal predecessors, (104), 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) [2021-12-07 01:29:05,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:29:05,057 INFO L93 Difference]: Finished difference Result 413 states and 513 transitions. [2021-12-07 01:29:05,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-07 01:29:05,057 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 34.666666666666664) internal successors, (104), 4 states have internal predecessors, (104), 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 104 [2021-12-07 01:29:05,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:29:05,059 INFO L225 Difference]: With dead ends: 413 [2021-12-07 01:29:05,060 INFO L226 Difference]: Without dead ends: 412 [2021-12-07 01:29:05,060 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-07 01:29:05,060 INFO L933 BasicCegarLoop]: 265 mSDtfsCounter, 135 mSDsluCounter, 288 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 553 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 01:29:05,061 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [151 Valid, 553 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 01:29:05,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 412 states. [2021-12-07 01:29:05,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 412 to 412. [2021-12-07 01:29:05,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 412 states, 384 states have (on average 1.21875) internal successors, (468), 397 states have internal predecessors, (468), 22 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (22), 13 states have call predecessors, (22), 22 states have call successors, (22) [2021-12-07 01:29:05,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 412 states to 412 states and 512 transitions. [2021-12-07 01:29:05,073 INFO L78 Accepts]: Start accepts. Automaton has 412 states and 512 transitions. Word has length 104 [2021-12-07 01:29:05,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:29:05,073 INFO L470 AbstractCegarLoop]: Abstraction has 412 states and 512 transitions. [2021-12-07 01:29:05,073 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 34.666666666666664) internal successors, (104), 4 states have internal predecessors, (104), 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) [2021-12-07 01:29:05,073 INFO L276 IsEmpty]: Start isEmpty. Operand 412 states and 512 transitions. [2021-12-07 01:29:05,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-12-07 01:29:05,074 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:29:05,074 INFO L514 BasicCegarLoop]: 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] [2021-12-07 01:29:05,100 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ae7db91-de54-4119-ac4a-1722e9d2f6ed/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2021-12-07 01:29:05,275 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ae7db91-de54-4119-ac4a-1722e9d2f6ed/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:29:05,275 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-07 01:29:05,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:29:05,276 INFO L85 PathProgramCache]: Analyzing trace with hash -1365413568, now seen corresponding path program 1 times [2021-12-07 01:29:05,276 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:29:05,276 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852913836] [2021-12-07 01:29:05,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:29:05,276 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:29:05,374 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-07 01:29:05,374 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [576635119] [2021-12-07 01:29:05,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:29:05,374 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:29:05,375 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ae7db91-de54-4119-ac4a-1722e9d2f6ed/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:29:05,375 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ae7db91-de54-4119-ac4a-1722e9d2f6ed/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 01:29:05,379 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ae7db91-de54-4119-ac4a-1722e9d2f6ed/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-07 01:29:06,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:29:06,239 INFO L263 TraceCheckSpWp]: Trace formula consists of 2954 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-07 01:29:06,242 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:29:06,357 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:29:06,357 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 01:29:06,479 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:29:06,479 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:29:06,479 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852913836] [2021-12-07 01:29:06,480 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-07 01:29:06,480 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [576635119] [2021-12-07 01:29:06,480 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [576635119] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-07 01:29:06,480 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-07 01:29:06,480 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2021-12-07 01:29:06,480 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768499674] [2021-12-07 01:29:06,480 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-07 01:29:06,481 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-07 01:29:06,481 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:29:06,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-07 01:29:06,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-12-07 01:29:06,481 INFO L87 Difference]: Start difference. First operand 412 states and 512 transitions. Second operand has 8 states, 8 states have (on average 26.5) internal successors, (212), 8 states have internal predecessors, (212), 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) [2021-12-07 01:29:06,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:29:06,581 INFO L93 Difference]: Finished difference Result 634 states and 796 transitions. [2021-12-07 01:29:06,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-07 01:29:06,581 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 26.5) internal successors, (212), 8 states have internal predecessors, (212), 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 108 [2021-12-07 01:29:06,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:29:06,586 INFO L225 Difference]: With dead ends: 634 [2021-12-07 01:29:06,586 INFO L226 Difference]: Without dead ends: 600 [2021-12-07 01:29:06,587 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 208 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2021-12-07 01:29:06,587 INFO L933 BasicCegarLoop]: 372 mSDtfsCounter, 647 mSDsluCounter, 1151 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 665 SdHoareTripleChecker+Valid, 1523 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-07 01:29:06,588 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [665 Valid, 1523 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-07 01:29:06,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 600 states. [2021-12-07 01:29:06,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 600 to 600. [2021-12-07 01:29:06,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 600 states, 566 states have (on average 1.2102473498233215) internal successors, (685), 579 states have internal predecessors, (685), 28 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (28), 19 states have call predecessors, (28), 28 states have call successors, (28) [2021-12-07 01:29:06,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 600 states to 600 states and 741 transitions. [2021-12-07 01:29:06,613 INFO L78 Accepts]: Start accepts. Automaton has 600 states and 741 transitions. Word has length 108 [2021-12-07 01:29:06,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:29:06,613 INFO L470 AbstractCegarLoop]: Abstraction has 600 states and 741 transitions. [2021-12-07 01:29:06,614 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 26.5) internal successors, (212), 8 states have internal predecessors, (212), 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) [2021-12-07 01:29:06,614 INFO L276 IsEmpty]: Start isEmpty. Operand 600 states and 741 transitions. [2021-12-07 01:29:06,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-12-07 01:29:06,615 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:29:06,615 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:29:06,642 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ae7db91-de54-4119-ac4a-1722e9d2f6ed/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2021-12-07 01:29:06,816 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ae7db91-de54-4119-ac4a-1722e9d2f6ed/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:29:06,817 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-07 01:29:06,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:29:06,819 INFO L85 PathProgramCache]: Analyzing trace with hash -1366065166, now seen corresponding path program 1 times [2021-12-07 01:29:06,819 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:29:06,820 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532287841] [2021-12-07 01:29:06,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:29:06,821 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:29:06,971 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-07 01:29:06,971 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1019459141] [2021-12-07 01:29:06,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:29:06,972 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:29:06,972 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ae7db91-de54-4119-ac4a-1722e9d2f6ed/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:29:06,972 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ae7db91-de54-4119-ac4a-1722e9d2f6ed/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 01:29:06,973 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ae7db91-de54-4119-ac4a-1722e9d2f6ed/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-12-07 01:29:07,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:29:07,973 INFO L263 TraceCheckSpWp]: Trace formula consists of 2960 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-07 01:29:07,976 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:29:08,194 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:29:08,194 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 01:29:08,194 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:29:08,195 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532287841] [2021-12-07 01:29:08,195 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-07 01:29:08,195 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1019459141] [2021-12-07 01:29:08,195 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1019459141] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:29:08,195 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:29:08,195 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-07 01:29:08,195 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975943067] [2021-12-07 01:29:08,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:29:08,196 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 01:29:08,196 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:29:08,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 01:29:08,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 01:29:08,197 INFO L87 Difference]: Start difference. First operand 600 states and 741 transitions. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 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) [2021-12-07 01:29:08,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:29:08,246 INFO L93 Difference]: Finished difference Result 1051 states and 1305 transitions. [2021-12-07 01:29:08,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 01:29:08,247 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 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 108 [2021-12-07 01:29:08,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:29:08,249 INFO L225 Difference]: With dead ends: 1051 [2021-12-07 01:29:08,249 INFO L226 Difference]: Without dead ends: 598 [2021-12-07 01:29:08,250 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 01:29:08,251 INFO L933 BasicCegarLoop]: 277 mSDtfsCounter, 65 mSDsluCounter, 259 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 536 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 [2021-12-07 01:29:08,251 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [70 Valid, 536 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 01:29:08,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 598 states. [2021-12-07 01:29:08,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 598 to 598. [2021-12-07 01:29:08,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 598 states, 564 states have (on average 1.2092198581560283) internal successors, (682), 577 states have internal predecessors, (682), 28 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (28), 19 states have call predecessors, (28), 28 states have call successors, (28) [2021-12-07 01:29:08,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 598 states to 598 states and 738 transitions. [2021-12-07 01:29:08,268 INFO L78 Accepts]: Start accepts. Automaton has 598 states and 738 transitions. Word has length 108 [2021-12-07 01:29:08,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:29:08,268 INFO L470 AbstractCegarLoop]: Abstraction has 598 states and 738 transitions. [2021-12-07 01:29:08,268 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 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) [2021-12-07 01:29:08,268 INFO L276 IsEmpty]: Start isEmpty. Operand 598 states and 738 transitions. [2021-12-07 01:29:08,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-12-07 01:29:08,269 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:29:08,269 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:29:08,312 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ae7db91-de54-4119-ac4a-1722e9d2f6ed/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2021-12-07 01:29:08,470 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ae7db91-de54-4119-ac4a-1722e9d2f6ed/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2021-12-07 01:29:08,470 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-07 01:29:08,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:29:08,471 INFO L85 PathProgramCache]: Analyzing trace with hash -353330685, now seen corresponding path program 1 times [2021-12-07 01:29:08,471 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:29:08,471 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368353257] [2021-12-07 01:29:08,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:29:08,471 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:29:08,558 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-07 01:29:08,558 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [104151091] [2021-12-07 01:29:08,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:29:08,558 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:29:08,559 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ae7db91-de54-4119-ac4a-1722e9d2f6ed/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:29:08,559 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ae7db91-de54-4119-ac4a-1722e9d2f6ed/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 01:29:08,562 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ae7db91-de54-4119-ac4a-1722e9d2f6ed/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-12-07 01:29:09,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:29:09,529 INFO L263 TraceCheckSpWp]: Trace formula consists of 2097 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-07 01:29:09,532 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:29:09,679 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-07 01:29:09,679 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 01:29:09,680 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:29:09,680 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368353257] [2021-12-07 01:29:09,680 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-07 01:29:09,680 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [104151091] [2021-12-07 01:29:09,680 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [104151091] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:29:09,680 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:29:09,680 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-07 01:29:09,680 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429960261] [2021-12-07 01:29:09,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:29:09,681 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 01:29:09,681 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:29:09,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 01:29:09,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 01:29:09,681 INFO L87 Difference]: Start difference. First operand 598 states and 738 transitions. Second operand has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 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) [2021-12-07 01:29:09,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:29:09,737 INFO L93 Difference]: Finished difference Result 1136 states and 1408 transitions. [2021-12-07 01:29:09,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 01:29:09,740 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 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 123 [2021-12-07 01:29:09,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:29:09,742 INFO L225 Difference]: With dead ends: 1136 [2021-12-07 01:29:09,742 INFO L226 Difference]: Without dead ends: 596 [2021-12-07 01:29:09,743 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 01:29:09,744 INFO L933 BasicCegarLoop]: 274 mSDtfsCounter, 15 mSDsluCounter, 260 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 534 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 01:29:09,744 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17 Valid, 534 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 01:29:09,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 596 states. [2021-12-07 01:29:09,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 596 to 596. [2021-12-07 01:29:09,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 596 states, 562 states have (on average 1.208185053380783) internal successors, (679), 575 states have internal predecessors, (679), 28 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (28), 19 states have call predecessors, (28), 28 states have call successors, (28) [2021-12-07 01:29:09,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 596 states to 596 states and 735 transitions. [2021-12-07 01:29:09,760 INFO L78 Accepts]: Start accepts. Automaton has 596 states and 735 transitions. Word has length 123 [2021-12-07 01:29:09,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:29:09,760 INFO L470 AbstractCegarLoop]: Abstraction has 596 states and 735 transitions. [2021-12-07 01:29:09,761 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 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) [2021-12-07 01:29:09,761 INFO L276 IsEmpty]: Start isEmpty. Operand 596 states and 735 transitions. [2021-12-07 01:29:09,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2021-12-07 01:29:09,762 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:29:09,762 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:29:09,790 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ae7db91-de54-4119-ac4a-1722e9d2f6ed/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2021-12-07 01:29:09,962 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ae7db91-de54-4119-ac4a-1722e9d2f6ed/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:29:09,963 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-07 01:29:09,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:29:09,963 INFO L85 PathProgramCache]: Analyzing trace with hash 623227202, now seen corresponding path program 1 times [2021-12-07 01:29:09,963 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:29:09,963 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656549829] [2021-12-07 01:29:09,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:29:09,963 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:29:10,016 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-07 01:29:10,016 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1908634656] [2021-12-07 01:29:10,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:29:10,017 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:29:10,017 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ae7db91-de54-4119-ac4a-1722e9d2f6ed/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:29:10,017 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ae7db91-de54-4119-ac4a-1722e9d2f6ed/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 01:29:10,020 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ae7db91-de54-4119-ac4a-1722e9d2f6ed/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-12-07 01:29:11,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:29:11,028 INFO L263 TraceCheckSpWp]: Trace formula consists of 1234 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-07 01:29:11,030 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:29:11,117 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-12-07 01:29:11,117 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 01:29:11,117 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:29:11,117 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [656549829] [2021-12-07 01:29:11,117 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-07 01:29:11,117 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1908634656] [2021-12-07 01:29:11,117 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1908634656] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:29:11,117 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:29:11,117 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-07 01:29:11,118 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016345472] [2021-12-07 01:29:11,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:29:11,118 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-07 01:29:11,118 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:29:11,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-07 01:29:11,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-07 01:29:11,118 INFO L87 Difference]: Start difference. First operand 596 states and 735 transitions. Second operand has 4 states, 4 states have (on average 31.0) internal successors, (124), 4 states have internal predecessors, (124), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-07 01:29:11,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:29:11,151 INFO L93 Difference]: Finished difference Result 1143 states and 1433 transitions. [2021-12-07 01:29:11,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-07 01:29:11,152 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 31.0) internal successors, (124), 4 states have internal predecessors, (124), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) Word has length 138 [2021-12-07 01:29:11,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:29:11,155 INFO L225 Difference]: With dead ends: 1143 [2021-12-07 01:29:11,155 INFO L226 Difference]: Without dead ends: 599 [2021-12-07 01:29:11,156 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-07 01:29:11,156 INFO L933 BasicCegarLoop]: 271 mSDtfsCounter, 2 mSDsluCounter, 535 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 806 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 01:29:11,157 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 806 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 01:29:11,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 599 states. [2021-12-07 01:29:11,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 599 to 599. [2021-12-07 01:29:11,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 599 states, 564 states have (on average 1.2092198581560283) internal successors, (682), 578 states have internal predecessors, (682), 28 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (34), 19 states have call predecessors, (34), 28 states have call successors, (34) [2021-12-07 01:29:11,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 599 states to 599 states and 744 transitions. [2021-12-07 01:29:11,173 INFO L78 Accepts]: Start accepts. Automaton has 599 states and 744 transitions. Word has length 138 [2021-12-07 01:29:11,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:29:11,173 INFO L470 AbstractCegarLoop]: Abstraction has 599 states and 744 transitions. [2021-12-07 01:29:11,173 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.0) internal successors, (124), 4 states have internal predecessors, (124), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-07 01:29:11,173 INFO L276 IsEmpty]: Start isEmpty. Operand 599 states and 744 transitions. [2021-12-07 01:29:11,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2021-12-07 01:29:11,174 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:29:11,174 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:29:11,203 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ae7db91-de54-4119-ac4a-1722e9d2f6ed/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2021-12-07 01:29:11,375 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ae7db91-de54-4119-ac4a-1722e9d2f6ed/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-12-07 01:29:11,375 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-07 01:29:11,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:29:11,375 INFO L85 PathProgramCache]: Analyzing trace with hash -268398914, now seen corresponding path program 1 times [2021-12-07 01:29:11,376 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:29:11,376 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872428076] [2021-12-07 01:29:11,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:29:11,376 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:29:11,430 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-07 01:29:11,430 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [68909826] [2021-12-07 01:29:11,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:29:11,431 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:29:11,431 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ae7db91-de54-4119-ac4a-1722e9d2f6ed/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:29:11,431 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ae7db91-de54-4119-ac4a-1722e9d2f6ed/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 01:29:11,432 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ae7db91-de54-4119-ac4a-1722e9d2f6ed/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-12-07 01:29:12,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:29:12,754 INFO L263 TraceCheckSpWp]: Trace formula consists of 1294 conjuncts, 11 conjunts are in the unsatisfiable core [2021-12-07 01:29:12,756 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:29:12,848 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 20 proven. 7 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2021-12-07 01:29:12,848 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 01:29:12,965 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 22 proven. 1 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-12-07 01:29:12,965 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:29:12,965 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872428076] [2021-12-07 01:29:12,965 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-07 01:29:12,965 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [68909826] [2021-12-07 01:29:12,965 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [68909826] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-07 01:29:12,965 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-07 01:29:12,965 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2021-12-07 01:29:12,966 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831153250] [2021-12-07 01:29:12,966 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-07 01:29:12,966 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-07 01:29:12,966 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:29:12,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-07 01:29:12,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-07 01:29:12,967 INFO L87 Difference]: Start difference. First operand 599 states and 744 transitions. Second operand has 8 states, 8 states have (on average 16.375) internal successors, (131), 8 states have internal predecessors, (131), 1 states have call successors, (4), 1 states have call predecessors, (4), 3 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2021-12-07 01:29:13,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:29:13,057 INFO L93 Difference]: Finished difference Result 1157 states and 1475 transitions. [2021-12-07 01:29:13,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-07 01:29:13,058 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 16.375) internal successors, (131), 8 states have internal predecessors, (131), 1 states have call successors, (4), 1 states have call predecessors, (4), 3 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) Word has length 142 [2021-12-07 01:29:13,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:29:13,060 INFO L225 Difference]: With dead ends: 1157 [2021-12-07 01:29:13,061 INFO L226 Difference]: Without dead ends: 610 [2021-12-07 01:29:13,062 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 287 GetRequests, 276 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=62, Invalid=94, Unknown=0, NotChecked=0, Total=156 [2021-12-07 01:29:13,062 INFO L933 BasicCegarLoop]: 270 mSDtfsCounter, 20 mSDsluCounter, 1059 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 1329 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 01:29:13,062 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 1329 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 01:29:13,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 610 states. [2021-12-07 01:29:13,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 610 to 608. [2021-12-07 01:29:13,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 608 states, 572 states have (on average 1.2167832167832169) internal successors, (696), 586 states have internal predecessors, (696), 28 states have call successors, (28), 3 states have call predecessors, (28), 4 states have return successors, (40), 19 states have call predecessors, (40), 28 states have call successors, (40) [2021-12-07 01:29:13,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 608 states to 608 states and 764 transitions. [2021-12-07 01:29:13,079 INFO L78 Accepts]: Start accepts. Automaton has 608 states and 764 transitions. Word has length 142 [2021-12-07 01:29:13,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:29:13,079 INFO L470 AbstractCegarLoop]: Abstraction has 608 states and 764 transitions. [2021-12-07 01:29:13,079 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.375) internal successors, (131), 8 states have internal predecessors, (131), 1 states have call successors, (4), 1 states have call predecessors, (4), 3 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2021-12-07 01:29:13,079 INFO L276 IsEmpty]: Start isEmpty. Operand 608 states and 764 transitions. [2021-12-07 01:29:13,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2021-12-07 01:29:13,080 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:29:13,080 INFO L514 BasicCegarLoop]: trace histogram [12, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:29:13,123 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ae7db91-de54-4119-ac4a-1722e9d2f6ed/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2021-12-07 01:29:13,281 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ae7db91-de54-4119-ac4a-1722e9d2f6ed/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-12-07 01:29:13,281 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-07 01:29:13,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:29:13,281 INFO L85 PathProgramCache]: Analyzing trace with hash -150155646, now seen corresponding path program 2 times [2021-12-07 01:29:13,281 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:29:13,281 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [550338465] [2021-12-07 01:29:13,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:29:13,282 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:29:13,341 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-07 01:29:13,341 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1685866068] [2021-12-07 01:29:13,341 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-07 01:29:13,341 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:29:13,342 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ae7db91-de54-4119-ac4a-1722e9d2f6ed/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:29:13,342 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ae7db91-de54-4119-ac4a-1722e9d2f6ed/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 01:29:13,343 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ae7db91-de54-4119-ac4a-1722e9d2f6ed/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-12-07 01:29:14,863 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-07 01:29:14,863 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-07 01:29:14,872 INFO L263 TraceCheckSpWp]: Trace formula consists of 1414 conjuncts, 17 conjunts are in the unsatisfiable core [2021-12-07 01:29:14,875 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:29:14,995 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 97 proven. 10 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-12-07 01:29:14,995 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 01:29:15,218 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 21 proven. 54 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2021-12-07 01:29:15,218 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:29:15,219 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [550338465] [2021-12-07 01:29:15,219 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-07 01:29:15,219 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1685866068] [2021-12-07 01:29:15,219 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1685866068] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-07 01:29:15,219 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-07 01:29:15,219 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 15 [2021-12-07 01:29:15,219 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661904360] [2021-12-07 01:29:15,219 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-07 01:29:15,220 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-12-07 01:29:15,220 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:29:15,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-12-07 01:29:15,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2021-12-07 01:29:15,220 INFO L87 Difference]: Start difference. First operand 608 states and 764 transitions. Second operand has 15 states, 15 states have (on average 9.466666666666667) internal successors, (142), 15 states have internal predecessors, (142), 2 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-07 01:29:16,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:29:16,220 INFO L93 Difference]: Finished difference Result 1218 states and 1587 transitions. [2021-12-07 01:29:16,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-12-07 01:29:16,220 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 9.466666666666667) internal successors, (142), 15 states have internal predecessors, (142), 2 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 150 [2021-12-07 01:29:16,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:29:16,225 INFO L225 Difference]: With dead ends: 1218 [2021-12-07 01:29:16,225 INFO L226 Difference]: Without dead ends: 616 [2021-12-07 01:29:16,227 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 309 GetRequests, 285 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=219, Invalid=431, Unknown=0, NotChecked=0, Total=650 [2021-12-07 01:29:16,227 INFO L933 BasicCegarLoop]: 263 mSDtfsCounter, 319 mSDsluCounter, 1574 mSDsCounter, 0 mSdLazyCounter, 296 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 349 SdHoareTripleChecker+Valid, 1837 SdHoareTripleChecker+Invalid, 348 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 296 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-07 01:29:16,227 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [349 Valid, 1837 Invalid, 348 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 296 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-07 01:29:16,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 616 states. [2021-12-07 01:29:16,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 616 to 610. [2021-12-07 01:29:16,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 610 states, 573 states have (on average 1.2233856893542758) internal successors, (701), 588 states have internal predecessors, (701), 28 states have call successors, (28), 3 states have call predecessors, (28), 5 states have return successors, (46), 19 states have call predecessors, (46), 28 states have call successors, (46) [2021-12-07 01:29:16,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 610 states to 610 states and 775 transitions. [2021-12-07 01:29:16,255 INFO L78 Accepts]: Start accepts. Automaton has 610 states and 775 transitions. Word has length 150 [2021-12-07 01:29:16,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:29:16,256 INFO L470 AbstractCegarLoop]: Abstraction has 610 states and 775 transitions. [2021-12-07 01:29:16,256 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 9.466666666666667) internal successors, (142), 15 states have internal predecessors, (142), 2 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-07 01:29:16,256 INFO L276 IsEmpty]: Start isEmpty. Operand 610 states and 775 transitions. [2021-12-07 01:29:16,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2021-12-07 01:29:16,257 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:29:16,257 INFO L514 BasicCegarLoop]: trace histogram [24, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:29:16,291 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ae7db91-de54-4119-ac4a-1722e9d2f6ed/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-12-07 01:29:16,458 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ae7db91-de54-4119-ac4a-1722e9d2f6ed/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-12-07 01:29:16,459 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-07 01:29:16,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:29:16,460 INFO L85 PathProgramCache]: Analyzing trace with hash 872686402, now seen corresponding path program 3 times [2021-12-07 01:29:16,461 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:29:16,461 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1404091766] [2021-12-07 01:29:16,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:29:16,462 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:29:16,547 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-07 01:29:16,547 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1010326040] [2021-12-07 01:29:16,547 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-07 01:29:16,547 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:29:16,547 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ae7db91-de54-4119-ac4a-1722e9d2f6ed/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:29:16,548 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ae7db91-de54-4119-ac4a-1722e9d2f6ed/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 01:29:16,549 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ae7db91-de54-4119-ac4a-1722e9d2f6ed/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-12-07 01:29:17,364 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-12-07 01:29:17,364 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-07 01:29:17,367 INFO L263 TraceCheckSpWp]: Trace formula consists of 373 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-07 01:29:17,370 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:29:17,528 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 396 trivial. 0 not checked. [2021-12-07 01:29:17,528 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 01:29:17,528 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:29:17,529 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1404091766] [2021-12-07 01:29:17,529 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-07 01:29:17,529 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1010326040] [2021-12-07 01:29:17,529 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1010326040] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:29:17,529 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:29:17,529 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-07 01:29:17,529 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329137317] [2021-12-07 01:29:17,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:29:17,530 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-07 01:29:17,530 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:29:17,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-07 01:29:17,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-12-07 01:29:17,530 INFO L87 Difference]: Start difference. First operand 610 states and 775 transitions. Second operand has 6 states, 5 states have (on average 24.4) internal successors, (122), 6 states have internal predecessors, (122), 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) [2021-12-07 01:29:17,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:29:17,585 INFO L93 Difference]: Finished difference Result 610 states and 775 transitions. [2021-12-07 01:29:17,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-07 01:29:17,585 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 24.4) internal successors, (122), 6 states have internal predecessors, (122), 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 162 [2021-12-07 01:29:17,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:29:17,588 INFO L225 Difference]: With dead ends: 610 [2021-12-07 01:29:17,588 INFO L226 Difference]: Without dead ends: 609 [2021-12-07 01:29:17,589 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-12-07 01:29:17,589 INFO L933 BasicCegarLoop]: 458 mSDtfsCounter, 506 mSDsluCounter, 731 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 524 SdHoareTripleChecker+Valid, 1189 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 01:29:17,589 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [524 Valid, 1189 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 01:29:17,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 609 states. [2021-12-07 01:29:17,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 609 to 609. [2021-12-07 01:29:17,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 609 states, 573 states have (on average 1.219895287958115) internal successors, (699), 587 states have internal predecessors, (699), 28 states have call successors, (28), 3 states have call predecessors, (28), 5 states have return successors, (46), 19 states have call predecessors, (46), 28 states have call successors, (46) [2021-12-07 01:29:17,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 609 states to 609 states and 773 transitions. [2021-12-07 01:29:17,607 INFO L78 Accepts]: Start accepts. Automaton has 609 states and 773 transitions. Word has length 162 [2021-12-07 01:29:17,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:29:17,607 INFO L470 AbstractCegarLoop]: Abstraction has 609 states and 773 transitions. [2021-12-07 01:29:17,608 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 24.4) internal successors, (122), 6 states have internal predecessors, (122), 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) [2021-12-07 01:29:17,608 INFO L276 IsEmpty]: Start isEmpty. Operand 609 states and 773 transitions. [2021-12-07 01:29:17,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 362 [2021-12-07 01:29:17,610 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:29:17,610 INFO L514 BasicCegarLoop]: trace histogram [24, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:29:17,637 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ae7db91-de54-4119-ac4a-1722e9d2f6ed/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-12-07 01:29:17,811 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ae7db91-de54-4119-ac4a-1722e9d2f6ed/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-12-07 01:29:17,812 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-07 01:29:17,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:29:17,813 INFO L85 PathProgramCache]: Analyzing trace with hash -291555824, now seen corresponding path program 1 times [2021-12-07 01:29:17,814 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:29:17,814 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471073798] [2021-12-07 01:29:17,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:29:17,815 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:29:18,035 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-07 01:29:18,035 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [866900421] [2021-12-07 01:29:18,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:29:18,035 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:29:18,036 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ae7db91-de54-4119-ac4a-1722e9d2f6ed/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:29:18,036 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ae7db91-de54-4119-ac4a-1722e9d2f6ed/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 01:29:18,037 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ae7db91-de54-4119-ac4a-1722e9d2f6ed/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-12-07 01:29:19,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:29:19,881 INFO L263 TraceCheckSpWp]: Trace formula consists of 7364 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-07 01:29:19,887 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:29:20,217 INFO L134 CoverageAnalysis]: Checked inductivity of 692 backedges. 0 proven. 296 refuted. 0 times theorem prover too weak. 396 trivial. 0 not checked. [2021-12-07 01:29:20,217 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 01:29:20,564 INFO L134 CoverageAnalysis]: Checked inductivity of 692 backedges. 0 proven. 296 refuted. 0 times theorem prover too weak. 396 trivial. 0 not checked. [2021-12-07 01:29:20,565 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:29:20,565 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471073798] [2021-12-07 01:29:20,565 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-07 01:29:20,565 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [866900421] [2021-12-07 01:29:20,565 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [866900421] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-07 01:29:20,565 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-07 01:29:20,565 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2021-12-07 01:29:20,565 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722806538] [2021-12-07 01:29:20,566 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-07 01:29:20,566 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-07 01:29:20,566 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:29:20,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-07 01:29:20,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2021-12-07 01:29:20,567 INFO L87 Difference]: Start difference. First operand 609 states and 773 transitions. Second operand has 14 states, 13 states have (on average 49.0) internal successors, (637), 14 states have internal predecessors, (637), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-07 01:29:20,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:29:20,694 INFO L93 Difference]: Finished difference Result 821 states and 1052 transitions. [2021-12-07 01:29:20,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-07 01:29:20,695 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 49.0) internal successors, (637), 14 states have internal predecessors, (637), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 361 [2021-12-07 01:29:20,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:29:20,699 INFO L225 Difference]: With dead ends: 821 [2021-12-07 01:29:20,699 INFO L226 Difference]: Without dead ends: 820 [2021-12-07 01:29:20,699 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 724 GetRequests, 708 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=105, Invalid=201, Unknown=0, NotChecked=0, Total=306 [2021-12-07 01:29:20,700 INFO L933 BasicCegarLoop]: 347 mSDtfsCounter, 751 mSDsluCounter, 2570 mSDsCounter, 0 mSdLazyCounter, 181 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 787 SdHoareTripleChecker+Valid, 2917 SdHoareTripleChecker+Invalid, 225 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-07 01:29:20,700 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [787 Valid, 2917 Invalid, 225 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 181 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-07 01:29:20,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 820 states. [2021-12-07 01:29:20,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 820 to 608. [2021-12-07 01:29:20,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 608 states, 573 states have (on average 1.2181500872600348) internal successors, (698), 586 states have internal predecessors, (698), 28 states have call successors, (28), 3 states have call predecessors, (28), 5 states have return successors, (46), 19 states have call predecessors, (46), 28 states have call successors, (46) [2021-12-07 01:29:20,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 608 states to 608 states and 772 transitions. [2021-12-07 01:29:20,718 INFO L78 Accepts]: Start accepts. Automaton has 608 states and 772 transitions. Word has length 361 [2021-12-07 01:29:20,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:29:20,719 INFO L470 AbstractCegarLoop]: Abstraction has 608 states and 772 transitions. [2021-12-07 01:29:20,719 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 49.0) internal successors, (637), 14 states have internal predecessors, (637), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-07 01:29:20,719 INFO L276 IsEmpty]: Start isEmpty. Operand 608 states and 772 transitions. [2021-12-07 01:29:20,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 367 [2021-12-07 01:29:20,721 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:29:20,722 INFO L514 BasicCegarLoop]: trace histogram [24, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:29:20,776 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ae7db91-de54-4119-ac4a-1722e9d2f6ed/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2021-12-07 01:29:20,922 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ae7db91-de54-4119-ac4a-1722e9d2f6ed/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:29:20,922 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-07 01:29:20,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:29:20,923 INFO L85 PathProgramCache]: Analyzing trace with hash -939728542, now seen corresponding path program 1 times [2021-12-07 01:29:20,923 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:29:20,923 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469093087] [2021-12-07 01:29:20,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:29:20,923 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:29:21,146 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-07 01:29:21,146 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1252187357] [2021-12-07 01:29:21,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:29:21,146 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:29:21,147 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ae7db91-de54-4119-ac4a-1722e9d2f6ed/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:29:21,147 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ae7db91-de54-4119-ac4a-1722e9d2f6ed/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 01:29:21,148 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ae7db91-de54-4119-ac4a-1722e9d2f6ed/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-12-07 01:29:23,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:29:23,180 INFO L263 TraceCheckSpWp]: Trace formula consists of 7388 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-07 01:29:23,186 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:29:23,541 INFO L134 CoverageAnalysis]: Checked inductivity of 697 backedges. 0 proven. 301 refuted. 0 times theorem prover too weak. 396 trivial. 0 not checked. [2021-12-07 01:29:23,541 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 01:29:23,878 INFO L134 CoverageAnalysis]: Checked inductivity of 697 backedges. 0 proven. 301 refuted. 0 times theorem prover too weak. 396 trivial. 0 not checked. [2021-12-07 01:29:23,878 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:29:23,878 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1469093087] [2021-12-07 01:29:23,878 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-07 01:29:23,878 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1252187357] [2021-12-07 01:29:23,878 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1252187357] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-07 01:29:23,878 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-07 01:29:23,879 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2021-12-07 01:29:23,879 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207726207] [2021-12-07 01:29:23,879 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-07 01:29:23,880 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-12-07 01:29:23,880 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:29:23,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-12-07 01:29:23,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2021-12-07 01:29:23,881 INFO L87 Difference]: Start difference. First operand 608 states and 772 transitions. Second operand has 16 states, 16 states have (on average 40.25) internal successors, (644), 16 states have internal predecessors, (644), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-07 01:29:24,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:29:24,061 INFO L93 Difference]: Finished difference Result 1373 states and 1740 transitions. [2021-12-07 01:29:24,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-07 01:29:24,061 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 40.25) internal successors, (644), 16 states have internal predecessors, (644), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 366 [2021-12-07 01:29:24,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:29:24,067 INFO L225 Difference]: With dead ends: 1373 [2021-12-07 01:29:24,067 INFO L226 Difference]: Without dead ends: 1340 [2021-12-07 01:29:24,068 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 736 GetRequests, 716 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=151, Invalid=311, Unknown=0, NotChecked=0, Total=462 [2021-12-07 01:29:24,069 INFO L933 BasicCegarLoop]: 327 mSDtfsCounter, 1731 mSDsluCounter, 2513 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1769 SdHoareTripleChecker+Valid, 2840 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-07 01:29:24,069 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1769 Valid, 2840 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-07 01:29:24,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1340 states. [2021-12-07 01:29:24,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1340 to 1340. [2021-12-07 01:29:24,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1340 states, 1281 states have (on average 1.200624512099922) internal successors, (1538), 1294 states have internal predecessors, (1538), 52 states have call successors, (52), 3 states have call predecessors, (52), 5 states have return successors, (94), 43 states have call predecessors, (94), 52 states have call successors, (94) [2021-12-07 01:29:24,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1340 states to 1340 states and 1684 transitions. [2021-12-07 01:29:24,102 INFO L78 Accepts]: Start accepts. Automaton has 1340 states and 1684 transitions. Word has length 366 [2021-12-07 01:29:24,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:29:24,103 INFO L470 AbstractCegarLoop]: Abstraction has 1340 states and 1684 transitions. [2021-12-07 01:29:24,103 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 40.25) internal successors, (644), 16 states have internal predecessors, (644), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-07 01:29:24,103 INFO L276 IsEmpty]: Start isEmpty. Operand 1340 states and 1684 transitions. [2021-12-07 01:29:24,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 775 [2021-12-07 01:29:24,110 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:29:24,110 INFO L514 BasicCegarLoop]: trace histogram [24, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 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] [2021-12-07 01:29:24,149 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ae7db91-de54-4119-ac4a-1722e9d2f6ed/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-12-07 01:29:24,311 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ae7db91-de54-4119-ac4a-1722e9d2f6ed/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-12-07 01:29:24,311 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-07 01:29:24,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:29:24,312 INFO L85 PathProgramCache]: Analyzing trace with hash 710601222, now seen corresponding path program 2 times [2021-12-07 01:29:24,312 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:29:24,312 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1565413625] [2021-12-07 01:29:24,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:29:24,312 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:29:24,815 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-07 01:29:24,816 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1179298049] [2021-12-07 01:29:24,816 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-07 01:29:24,816 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:29:24,816 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ae7db91-de54-4119-ac4a-1722e9d2f6ed/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:29:24,817 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ae7db91-de54-4119-ac4a-1722e9d2f6ed/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 01:29:24,817 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ae7db91-de54-4119-ac4a-1722e9d2f6ed/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-12-07 01:29:26,845 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-12-07 01:29:26,846 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-07 01:29:26,855 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-07 01:29:26,862 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:29:27,607 INFO L134 CoverageAnalysis]: Checked inductivity of 2521 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2521 trivial. 0 not checked. [2021-12-07 01:29:27,607 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 01:29:27,607 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:29:27,607 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1565413625] [2021-12-07 01:29:27,607 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-07 01:29:27,607 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1179298049] [2021-12-07 01:29:27,608 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1179298049] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:29:27,608 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:29:27,608 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-07 01:29:27,608 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288028385] [2021-12-07 01:29:27,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:29:27,609 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-07 01:29:27,609 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:29:27,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-07 01:29:27,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-07 01:29:27,609 INFO L87 Difference]: Start difference. First operand 1340 states and 1684 transitions. Second operand has 4 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 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) [2021-12-07 01:29:27,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:29:27,657 INFO L93 Difference]: Finished difference Result 1366 states and 1730 transitions. [2021-12-07 01:29:27,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-07 01:29:27,657 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 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 774 [2021-12-07 01:29:27,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:29:27,664 INFO L225 Difference]: With dead ends: 1366 [2021-12-07 01:29:27,665 INFO L226 Difference]: Without dead ends: 1365 [2021-12-07 01:29:27,665 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 774 GetRequests, 771 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-07 01:29:27,666 INFO L933 BasicCegarLoop]: 266 mSDtfsCounter, 109 mSDsluCounter, 304 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 570 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 01:29:27,666 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [119 Valid, 570 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 01:29:27,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1365 states. [2021-12-07 01:29:27,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1365 to 1342. [2021-12-07 01:29:27,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1342 states, 1283 states have (on average 1.2003117692907248) internal successors, (1540), 1296 states have internal predecessors, (1540), 52 states have call successors, (52), 3 states have call predecessors, (52), 5 states have return successors, (94), 43 states have call predecessors, (94), 52 states have call successors, (94) [2021-12-07 01:29:27,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1342 states to 1342 states and 1686 transitions. [2021-12-07 01:29:27,709 INFO L78 Accepts]: Start accepts. Automaton has 1342 states and 1686 transitions. Word has length 774 [2021-12-07 01:29:27,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:29:27,710 INFO L470 AbstractCegarLoop]: Abstraction has 1342 states and 1686 transitions. [2021-12-07 01:29:27,710 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 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) [2021-12-07 01:29:27,710 INFO L276 IsEmpty]: Start isEmpty. Operand 1342 states and 1686 transitions. [2021-12-07 01:29:27,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 776 [2021-12-07 01:29:27,720 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:29:27,720 INFO L514 BasicCegarLoop]: trace histogram [24, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 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] [2021-12-07 01:29:27,753 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ae7db91-de54-4119-ac4a-1722e9d2f6ed/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2021-12-07 01:29:27,921 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ae7db91-de54-4119-ac4a-1722e9d2f6ed/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-12-07 01:29:27,921 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-07 01:29:27,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:29:27,922 INFO L85 PathProgramCache]: Analyzing trace with hash 553802183, now seen corresponding path program 1 times [2021-12-07 01:29:27,922 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:29:27,922 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1428658081] [2021-12-07 01:29:27,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:29:27,922 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:29:28,467 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-07 01:29:28,467 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [586260837] [2021-12-07 01:29:28,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:29:28,468 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:29:28,468 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ae7db91-de54-4119-ac4a-1722e9d2f6ed/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:29:28,469 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ae7db91-de54-4119-ac4a-1722e9d2f6ed/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 01:29:28,469 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ae7db91-de54-4119-ac4a-1722e9d2f6ed/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-12-07 01:29:32,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:29:33,019 INFO L263 TraceCheckSpWp]: Trace formula consists of 18989 conjuncts, 16 conjunts are in the unsatisfiable core [2021-12-07 01:29:33,033 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:29:33,778 INFO L134 CoverageAnalysis]: Checked inductivity of 2521 backedges. 0 proven. 2125 refuted. 0 times theorem prover too weak. 396 trivial. 0 not checked. [2021-12-07 01:29:33,778 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 01:29:34,530 INFO L134 CoverageAnalysis]: Checked inductivity of 2521 backedges. 0 proven. 2125 refuted. 0 times theorem prover too weak. 396 trivial. 0 not checked. [2021-12-07 01:29:34,530 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:29:34,530 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1428658081] [2021-12-07 01:29:34,530 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-07 01:29:34,530 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [586260837] [2021-12-07 01:29:34,530 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [586260837] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-07 01:29:34,530 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-07 01:29:34,531 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 21 [2021-12-07 01:29:34,531 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825298194] [2021-12-07 01:29:34,531 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-07 01:29:34,532 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-12-07 01:29:34,532 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:29:34,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-12-07 01:29:34,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=300, Unknown=0, NotChecked=0, Total=420 [2021-12-07 01:29:34,533 INFO L87 Difference]: Start difference. First operand 1342 states and 1686 transitions. Second operand has 21 states, 21 states have (on average 45.57142857142857) internal successors, (957), 21 states have internal predecessors, (957), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-07 01:29:34,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:29:34,803 INFO L93 Difference]: Finished difference Result 1926 states and 2427 transitions. [2021-12-07 01:29:34,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-12-07 01:29:34,804 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 45.57142857142857) internal successors, (957), 21 states have internal predecessors, (957), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 775 [2021-12-07 01:29:34,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:29:34,812 INFO L225 Difference]: With dead ends: 1926 [2021-12-07 01:29:34,812 INFO L226 Difference]: Without dead ends: 1891 [2021-12-07 01:29:34,812 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1557 GetRequests, 1528 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=273, Invalid=597, Unknown=0, NotChecked=0, Total=870 [2021-12-07 01:29:34,813 INFO L933 BasicCegarLoop]: 374 mSDtfsCounter, 2671 mSDsluCounter, 3134 mSDsCounter, 0 mSdLazyCounter, 205 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2723 SdHoareTripleChecker+Valid, 3508 SdHoareTripleChecker+Invalid, 274 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-07 01:29:34,813 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2723 Valid, 3508 Invalid, 274 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 205 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-07 01:29:34,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1891 states. [2021-12-07 01:29:34,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1891 to 1891. [2021-12-07 01:29:34,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1891 states, 1814 states have (on average 1.1962513781697905) internal successors, (2170), 1827 states have internal predecessors, (2170), 70 states have call successors, (70), 3 states have call predecessors, (70), 5 states have return successors, (130), 61 states have call predecessors, (130), 70 states have call successors, (130) [2021-12-07 01:29:34,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1891 states to 1891 states and 2370 transitions. [2021-12-07 01:29:34,859 INFO L78 Accepts]: Start accepts. Automaton has 1891 states and 2370 transitions. Word has length 775 [2021-12-07 01:29:34,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:29:34,860 INFO L470 AbstractCegarLoop]: Abstraction has 1891 states and 2370 transitions. [2021-12-07 01:29:34,860 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 45.57142857142857) internal successors, (957), 21 states have internal predecessors, (957), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-07 01:29:34,860 INFO L276 IsEmpty]: Start isEmpty. Operand 1891 states and 2370 transitions. [2021-12-07 01:29:34,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1082 [2021-12-07 01:29:34,871 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:29:34,871 INFO L514 BasicCegarLoop]: trace histogram [24, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 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] [2021-12-07 01:29:34,950 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ae7db91-de54-4119-ac4a-1722e9d2f6ed/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2021-12-07 01:29:35,072 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ae7db91-de54-4119-ac4a-1722e9d2f6ed/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-12-07 01:29:35,072 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-07 01:29:35,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:29:35,073 INFO L85 PathProgramCache]: Analyzing trace with hash 511274380, now seen corresponding path program 2 times [2021-12-07 01:29:35,073 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:29:35,073 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919146972] [2021-12-07 01:29:35,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:29:35,073 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:29:35,809 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-07 01:29:35,809 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1318842421] [2021-12-07 01:29:35,809 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-07 01:29:35,809 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:29:35,809 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ae7db91-de54-4119-ac4a-1722e9d2f6ed/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:29:35,810 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ae7db91-de54-4119-ac4a-1722e9d2f6ed/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 01:29:35,811 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ae7db91-de54-4119-ac4a-1722e9d2f6ed/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-12-07 01:29:39,371 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-12-07 01:29:39,371 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-07 01:29:39,386 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-07 01:29:39,396 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:29:40,430 INFO L134 CoverageAnalysis]: Checked inductivity of 4960 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4960 trivial. 0 not checked. [2021-12-07 01:29:40,430 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 01:29:40,430 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:29:40,430 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1919146972] [2021-12-07 01:29:40,430 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-07 01:29:40,430 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1318842421] [2021-12-07 01:29:40,430 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1318842421] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:29:40,431 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:29:40,431 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-07 01:29:40,431 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645267247] [2021-12-07 01:29:40,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:29:40,432 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-07 01:29:40,432 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:29:40,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-07 01:29:40,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-07 01:29:40,432 INFO L87 Difference]: Start difference. First operand 1891 states and 2370 transitions. Second operand has 4 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 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) [2021-12-07 01:29:40,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:29:40,482 INFO L93 Difference]: Finished difference Result 1891 states and 2370 transitions. [2021-12-07 01:29:40,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-07 01:29:40,482 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 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 1081 [2021-12-07 01:29:40,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:29:40,490 INFO L225 Difference]: With dead ends: 1891 [2021-12-07 01:29:40,490 INFO L226 Difference]: Without dead ends: 1890 [2021-12-07 01:29:40,491 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1081 GetRequests, 1078 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-07 01:29:40,491 INFO L933 BasicCegarLoop]: 245 mSDtfsCounter, 144 mSDsluCounter, 233 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 478 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 01:29:40,491 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [144 Valid, 478 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 01:29:40,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1890 states. [2021-12-07 01:29:40,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1890 to 1890. [2021-12-07 01:29:40,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1890 states, 1814 states have (on average 1.1957001102535831) internal successors, (2169), 1826 states have internal predecessors, (2169), 70 states have call successors, (70), 3 states have call predecessors, (70), 5 states have return successors, (130), 61 states have call predecessors, (130), 70 states have call successors, (130) [2021-12-07 01:29:40,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1890 states to 1890 states and 2369 transitions. [2021-12-07 01:29:40,536 INFO L78 Accepts]: Start accepts. Automaton has 1890 states and 2369 transitions. Word has length 1081 [2021-12-07 01:29:40,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:29:40,537 INFO L470 AbstractCegarLoop]: Abstraction has 1890 states and 2369 transitions. [2021-12-07 01:29:40,537 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 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) [2021-12-07 01:29:40,537 INFO L276 IsEmpty]: Start isEmpty. Operand 1890 states and 2369 transitions. [2021-12-07 01:29:40,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1093 [2021-12-07 01:29:40,548 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:29:40,548 INFO L514 BasicCegarLoop]: trace histogram [24, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 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, 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] [2021-12-07 01:29:40,606 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ae7db91-de54-4119-ac4a-1722e9d2f6ed/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2021-12-07 01:29:40,749 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ae7db91-de54-4119-ac4a-1722e9d2f6ed/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:29:40,749 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-07 01:29:40,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:29:40,750 INFO L85 PathProgramCache]: Analyzing trace with hash -207960807, now seen corresponding path program 1 times [2021-12-07 01:29:40,750 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:29:40,750 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891112551] [2021-12-07 01:29:40,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:29:40,750 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:29:41,565 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-07 01:29:41,566 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2041347563] [2021-12-07 01:29:41,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:29:41,566 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:29:41,566 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ae7db91-de54-4119-ac4a-1722e9d2f6ed/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:29:41,567 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ae7db91-de54-4119-ac4a-1722e9d2f6ed/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 01:29:41,568 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ae7db91-de54-4119-ac4a-1722e9d2f6ed/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2021-12-07 01:29:48,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:29:49,145 INFO L263 TraceCheckSpWp]: Trace formula consists of 27724 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-07 01:29:49,163 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:29:50,090 INFO L134 CoverageAnalysis]: Checked inductivity of 4962 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4960 trivial. 0 not checked. [2021-12-07 01:29:50,090 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 01:29:51,167 INFO L134 CoverageAnalysis]: Checked inductivity of 4962 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4960 trivial. 0 not checked. [2021-12-07 01:29:51,167 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:29:51,167 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891112551] [2021-12-07 01:29:51,167 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-07 01:29:51,167 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2041347563] [2021-12-07 01:29:51,167 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2041347563] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-07 01:29:51,167 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-07 01:29:51,168 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5] total 9 [2021-12-07 01:29:51,168 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097790525] [2021-12-07 01:29:51,168 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-07 01:29:51,169 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-07 01:29:51,169 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:29:51,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-07 01:29:51,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-12-07 01:29:51,170 INFO L87 Difference]: Start difference. First operand 1890 states and 2369 transitions. Second operand has 10 states, 9 states have (on average 30.666666666666668) internal successors, (276), 10 states have internal predecessors, (276), 4 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2021-12-07 01:29:51,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:29:51,392 INFO L93 Difference]: Finished difference Result 1982 states and 2520 transitions. [2021-12-07 01:29:51,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-07 01:29:51,392 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 30.666666666666668) internal successors, (276), 10 states have internal predecessors, (276), 4 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) Word has length 1092 [2021-12-07 01:29:51,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:29:51,400 INFO L225 Difference]: With dead ends: 1982 [2021-12-07 01:29:51,400 INFO L226 Difference]: Without dead ends: 1981 [2021-12-07 01:29:51,401 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2189 GetRequests, 2174 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=99, Invalid=173, Unknown=0, NotChecked=0, Total=272 [2021-12-07 01:29:51,402 INFO L933 BasicCegarLoop]: 256 mSDtfsCounter, 910 mSDsluCounter, 356 mSDsCounter, 0 mSdLazyCounter, 248 mSolverCounterSat, 191 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 920 SdHoareTripleChecker+Valid, 612 SdHoareTripleChecker+Invalid, 439 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 191 IncrementalHoareTripleChecker+Valid, 248 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-07 01:29:51,402 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [920 Valid, 612 Invalid, 439 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [191 Valid, 248 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-07 01:29:51,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1981 states. [2021-12-07 01:29:51,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1981 to 1980. [2021-12-07 01:29:51,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1980 states, 1871 states have (on average 1.2057723142704435) internal successors, (2256), 1913 states have internal predecessors, (2256), 100 states have call successors, (100), 6 states have call predecessors, (100), 8 states have return successors, (160), 64 states have call predecessors, (160), 100 states have call successors, (160) [2021-12-07 01:29:51,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1980 states to 1980 states and 2516 transitions. [2021-12-07 01:29:51,448 INFO L78 Accepts]: Start accepts. Automaton has 1980 states and 2516 transitions. Word has length 1092 [2021-12-07 01:29:51,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:29:51,449 INFO L470 AbstractCegarLoop]: Abstraction has 1980 states and 2516 transitions. [2021-12-07 01:29:51,449 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 30.666666666666668) internal successors, (276), 10 states have internal predecessors, (276), 4 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2021-12-07 01:29:51,449 INFO L276 IsEmpty]: Start isEmpty. Operand 1980 states and 2516 transitions. [2021-12-07 01:29:51,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1129 [2021-12-07 01:29:51,460 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:29:51,461 INFO L514 BasicCegarLoop]: trace histogram [24, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 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, 5, 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] [2021-12-07 01:29:51,569 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ae7db91-de54-4119-ac4a-1722e9d2f6ed/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2021-12-07 01:29:51,661 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ae7db91-de54-4119-ac4a-1722e9d2f6ed/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:29:51,662 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-07 01:29:51,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:29:51,664 INFO L85 PathProgramCache]: Analyzing trace with hash -370999423, now seen corresponding path program 2 times [2021-12-07 01:29:51,665 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:29:51,665 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2120036203] [2021-12-07 01:29:51,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:29:51,666 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:29:52,625 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-07 01:29:52,625 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [201147455] [2021-12-07 01:29:52,625 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-07 01:29:52,625 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:29:52,625 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ae7db91-de54-4119-ac4a-1722e9d2f6ed/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:29:52,626 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ae7db91-de54-4119-ac4a-1722e9d2f6ed/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 01:29:52,627 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ae7db91-de54-4119-ac4a-1722e9d2f6ed/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2021-12-07 01:30:00,486 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-07 01:30:00,486 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-07 01:30:00,685 INFO L263 TraceCheckSpWp]: Trace formula consists of 27832 conjuncts, 11 conjunts are in the unsatisfiable core [2021-12-07 01:30:00,706 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:30:01,690 INFO L134 CoverageAnalysis]: Checked inductivity of 5040 backedges. 0 proven. 80 refuted. 0 times theorem prover too weak. 4960 trivial. 0 not checked. [2021-12-07 01:30:01,690 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 01:30:02,713 INFO L134 CoverageAnalysis]: Checked inductivity of 5040 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 4984 trivial. 0 not checked. [2021-12-07 01:30:02,713 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:30:02,713 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2120036203] [2021-12-07 01:30:02,713 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-07 01:30:02,713 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [201147455] [2021-12-07 01:30:02,714 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [201147455] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-07 01:30:02,714 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-07 01:30:02,714 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11] total 21 [2021-12-07 01:30:02,714 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896381542] [2021-12-07 01:30:02,714 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-07 01:30:02,716 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-12-07 01:30:02,716 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:30:02,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-12-07 01:30:02,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=331, Unknown=0, NotChecked=0, Total=462 [2021-12-07 01:30:02,716 INFO L87 Difference]: Start difference. First operand 1980 states and 2516 transitions. Second operand has 22 states, 21 states have (on average 15.571428571428571) internal successors, (327), 22 states have internal predecessors, (327), 10 states have call successors, (16), 6 states have call predecessors, (16), 6 states have return successors, (16), 10 states have call predecessors, (16), 10 states have call successors, (16) [2021-12-07 01:30:03,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:30:03,289 INFO L93 Difference]: Finished difference Result 2162 states and 2817 transitions. [2021-12-07 01:30:03,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-12-07 01:30:03,290 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 15.571428571428571) internal successors, (327), 22 states have internal predecessors, (327), 10 states have call successors, (16), 6 states have call predecessors, (16), 6 states have return successors, (16), 10 states have call predecessors, (16), 10 states have call successors, (16) Word has length 1128 [2021-12-07 01:30:03,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:30:03,299 INFO L225 Difference]: With dead ends: 2162 [2021-12-07 01:30:03,299 INFO L226 Difference]: Without dead ends: 2161 [2021-12-07 01:30:03,300 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2273 GetRequests, 2234 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 289 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=549, Invalid=1091, Unknown=0, NotChecked=0, Total=1640 [2021-12-07 01:30:03,301 INFO L933 BasicCegarLoop]: 256 mSDtfsCounter, 1639 mSDsluCounter, 779 mSDsCounter, 0 mSdLazyCounter, 804 mSolverCounterSat, 514 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1649 SdHoareTripleChecker+Valid, 1035 SdHoareTripleChecker+Invalid, 1318 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 514 IncrementalHoareTripleChecker+Valid, 804 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-07 01:30:03,301 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1649 Valid, 1035 Invalid, 1318 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [514 Valid, 804 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-07 01:30:03,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2161 states. [2021-12-07 01:30:03,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2161 to 2160. [2021-12-07 01:30:03,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2160 states, 1985 states have (on average 1.2241813602015112) internal successors, (2430), 2087 states have internal predecessors, (2430), 160 states have call successors, (160), 12 states have call predecessors, (160), 14 states have return successors, (220), 70 states have call predecessors, (220), 160 states have call successors, (220) [2021-12-07 01:30:03,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2160 states to 2160 states and 2810 transitions. [2021-12-07 01:30:03,354 INFO L78 Accepts]: Start accepts. Automaton has 2160 states and 2810 transitions. Word has length 1128 [2021-12-07 01:30:03,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:30:03,355 INFO L470 AbstractCegarLoop]: Abstraction has 2160 states and 2810 transitions. [2021-12-07 01:30:03,356 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 15.571428571428571) internal successors, (327), 22 states have internal predecessors, (327), 10 states have call successors, (16), 6 states have call predecessors, (16), 6 states have return successors, (16), 10 states have call predecessors, (16), 10 states have call successors, (16) [2021-12-07 01:30:03,356 INFO L276 IsEmpty]: Start isEmpty. Operand 2160 states and 2810 transitions. [2021-12-07 01:30:03,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1201 [2021-12-07 01:30:03,367 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:30:03,368 INFO L514 BasicCegarLoop]: trace histogram [24, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 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] [2021-12-07 01:30:03,476 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ae7db91-de54-4119-ac4a-1722e9d2f6ed/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2021-12-07 01:30:03,568 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ae7db91-de54-4119-ac4a-1722e9d2f6ed/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2021-12-07 01:30:03,569 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-07 01:30:03,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:30:03,569 INFO L85 PathProgramCache]: Analyzing trace with hash -608683951, now seen corresponding path program 3 times [2021-12-07 01:30:03,569 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:30:03,570 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824926371] [2021-12-07 01:30:03,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:30:03,570 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:30:04,381 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-07 01:30:04,381 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1788330719] [2021-12-07 01:30:04,381 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-07 01:30:04,381 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:30:04,382 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ae7db91-de54-4119-ac4a-1722e9d2f6ed/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:30:04,382 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ae7db91-de54-4119-ac4a-1722e9d2f6ed/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 01:30:04,383 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ae7db91-de54-4119-ac4a-1722e9d2f6ed/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2021-12-07 01:30:10,228 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-12-07 01:30:10,228 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-07 01:30:10,255 INFO L263 TraceCheckSpWp]: Trace formula consists of 2990 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-07 01:30:10,270 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:30:11,013 INFO L134 CoverageAnalysis]: Checked inductivity of 5520 backedges. 101 proven. 0 refuted. 0 times theorem prover too weak. 5419 trivial. 0 not checked. [2021-12-07 01:30:11,013 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 01:30:11,013 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:30:11,013 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824926371] [2021-12-07 01:30:11,013 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-07 01:30:11,013 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1788330719] [2021-12-07 01:30:11,013 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1788330719] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:30:11,013 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:30:11,014 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-07 01:30:11,014 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033618600] [2021-12-07 01:30:11,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:30:11,015 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-07 01:30:11,015 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:30:11,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-07 01:30:11,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-07 01:30:11,015 INFO L87 Difference]: Start difference. First operand 2160 states and 2810 transitions. Second operand has 5 states, 4 states have (on average 36.5) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-12-07 01:30:11,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:30:11,140 INFO L93 Difference]: Finished difference Result 2477 states and 3297 transitions. [2021-12-07 01:30:11,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-07 01:30:11,141 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 36.5) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 1200 [2021-12-07 01:30:11,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:30:11,152 INFO L225 Difference]: With dead ends: 2477 [2021-12-07 01:30:11,152 INFO L226 Difference]: Without dead ends: 2476 [2021-12-07 01:30:11,153 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1203 GetRequests, 1198 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-12-07 01:30:11,154 INFO L933 BasicCegarLoop]: 247 mSDtfsCounter, 464 mSDsluCounter, 279 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 465 SdHoareTripleChecker+Valid, 526 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-07 01:30:11,154 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [465 Valid, 526 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-07 01:30:11,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2476 states. [2021-12-07 01:30:11,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2476 to 2403. [2021-12-07 01:30:11,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2403 states, 2156 states have (on average 1.2481447124304268) internal successors, (2691), 2312 states have internal predecessors, (2691), 223 states have call successors, (223), 21 states have call predecessors, (223), 23 states have return successors, (283), 79 states have call predecessors, (283), 223 states have call successors, (283) [2021-12-07 01:30:11,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2403 states to 2403 states and 3197 transitions. [2021-12-07 01:30:11,236 INFO L78 Accepts]: Start accepts. Automaton has 2403 states and 3197 transitions. Word has length 1200 [2021-12-07 01:30:11,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:30:11,237 INFO L470 AbstractCegarLoop]: Abstraction has 2403 states and 3197 transitions. [2021-12-07 01:30:11,237 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 36.5) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-12-07 01:30:11,238 INFO L276 IsEmpty]: Start isEmpty. Operand 2403 states and 3197 transitions. [2021-12-07 01:30:11,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1202 [2021-12-07 01:30:11,250 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:30:11,250 INFO L514 BasicCegarLoop]: trace histogram [24, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 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, 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] [2021-12-07 01:30:11,322 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ae7db91-de54-4119-ac4a-1722e9d2f6ed/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2021-12-07 01:30:11,451 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ae7db91-de54-4119-ac4a-1722e9d2f6ed/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:30:11,451 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-07 01:30:11,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:30:11,452 INFO L85 PathProgramCache]: Analyzing trace with hash 1704097928, now seen corresponding path program 1 times [2021-12-07 01:30:11,452 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:30:11,452 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [914387176] [2021-12-07 01:30:11,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:30:11,452 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:30:12,331 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-07 01:30:12,331 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [187728363] [2021-12-07 01:30:12,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:30:12,332 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:30:12,332 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ae7db91-de54-4119-ac4a-1722e9d2f6ed/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:30:12,332 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ae7db91-de54-4119-ac4a-1722e9d2f6ed/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 01:30:12,333 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ae7db91-de54-4119-ac4a-1722e9d2f6ed/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2021-12-07 01:30:21,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:30:21,670 INFO L263 TraceCheckSpWp]: Trace formula consists of 28050 conjuncts, 23 conjunts are in the unsatisfiable core [2021-12-07 01:30:21,693 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:30:22,931 INFO L134 CoverageAnalysis]: Checked inductivity of 5511 backedges. 0 proven. 551 refuted. 0 times theorem prover too weak. 4960 trivial. 0 not checked. [2021-12-07 01:30:22,931 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 01:30:24,383 INFO L134 CoverageAnalysis]: Checked inductivity of 5511 backedges. 0 proven. 371 refuted. 0 times theorem prover too weak. 5140 trivial. 0 not checked. [2021-12-07 01:30:24,383 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:30:24,383 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [914387176] [2021-12-07 01:30:24,383 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-07 01:30:24,383 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [187728363] [2021-12-07 01:30:24,383 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [187728363] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-07 01:30:24,383 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-07 01:30:24,384 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 23] total 45 [2021-12-07 01:30:24,384 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281974921] [2021-12-07 01:30:24,384 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-07 01:30:24,386 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2021-12-07 01:30:24,386 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:30:24,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2021-12-07 01:30:24,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=551, Invalid=1519, Unknown=0, NotChecked=0, Total=2070 [2021-12-07 01:30:24,387 INFO L87 Difference]: Start difference. First operand 2403 states and 3197 transitions. Second operand has 46 states, 45 states have (on average 9.577777777777778) internal successors, (431), 46 states have internal predecessors, (431), 22 states have call successors, (28), 12 states have call predecessors, (28), 12 states have return successors, (28), 22 states have call predecessors, (28), 22 states have call successors, (28) [2021-12-07 01:30:26,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:30:26,119 INFO L93 Difference]: Finished difference Result 3120 states and 4365 transitions. [2021-12-07 01:30:26,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2021-12-07 01:30:26,120 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 45 states have (on average 9.577777777777778) internal successors, (431), 46 states have internal predecessors, (431), 22 states have call successors, (28), 12 states have call predecessors, (28), 12 states have return successors, (28), 22 states have call predecessors, (28), 22 states have call successors, (28) Word has length 1201 [2021-12-07 01:30:26,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:30:26,135 INFO L225 Difference]: With dead ends: 3120 [2021-12-07 01:30:26,135 INFO L226 Difference]: Without dead ends: 3119 [2021-12-07 01:30:26,139 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2443 GetRequests, 2356 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1615 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=2529, Invalid=5303, Unknown=0, NotChecked=0, Total=7832 [2021-12-07 01:30:26,139 INFO L933 BasicCegarLoop]: 256 mSDtfsCounter, 3233 mSDsluCounter, 2524 mSDsCounter, 0 mSdLazyCounter, 2164 mSolverCounterSat, 1455 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3243 SdHoareTripleChecker+Valid, 2780 SdHoareTripleChecker+Invalid, 3619 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1455 IncrementalHoareTripleChecker+Valid, 2164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-07 01:30:26,139 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3243 Valid, 2780 Invalid, 3619 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1455 Valid, 2164 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-07 01:30:26,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3119 states. [2021-12-07 01:30:26,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3119 to 3099. [2021-12-07 01:30:26,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3099 states, 2612 states have (on average 1.2967075038284839) internal successors, (3387), 2972 states have internal predecessors, (3387), 439 states have call successors, (439), 45 states have call predecessors, (439), 47 states have return successors, (499), 103 states have call predecessors, (499), 439 states have call successors, (499) [2021-12-07 01:30:26,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3099 states to 3099 states and 4325 transitions. [2021-12-07 01:30:26,265 INFO L78 Accepts]: Start accepts. Automaton has 3099 states and 4325 transitions. Word has length 1201 [2021-12-07 01:30:26,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:30:26,266 INFO L470 AbstractCegarLoop]: Abstraction has 3099 states and 4325 transitions. [2021-12-07 01:30:26,267 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 45 states have (on average 9.577777777777778) internal successors, (431), 46 states have internal predecessors, (431), 22 states have call successors, (28), 12 states have call predecessors, (28), 12 states have return successors, (28), 22 states have call predecessors, (28), 22 states have call successors, (28) [2021-12-07 01:30:26,267 INFO L276 IsEmpty]: Start isEmpty. Operand 3099 states and 4325 transitions. [2021-12-07 01:30:26,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1346 [2021-12-07 01:30:26,291 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:30:26,292 INFO L514 BasicCegarLoop]: trace histogram [24, 23, 22, 22, 22, 22, 22, 22, 22, 22, 21, 21, 21, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 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] [2021-12-07 01:30:26,431 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ae7db91-de54-4119-ac4a-1722e9d2f6ed/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2021-12-07 01:30:26,492 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ae7db91-de54-4119-ac4a-1722e9d2f6ed/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:30:26,494 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-07 01:30:26,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:30:26,496 INFO L85 PathProgramCache]: Analyzing trace with hash 1529686760, now seen corresponding path program 2 times [2021-12-07 01:30:26,496 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:30:26,496 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1920121935] [2021-12-07 01:30:26,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:30:26,496 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:30:27,333 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-07 01:30:27,333 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1472735725] [2021-12-07 01:30:27,333 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-07 01:30:27,334 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:30:27,334 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ae7db91-de54-4119-ac4a-1722e9d2f6ed/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:30:27,334 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ae7db91-de54-4119-ac4a-1722e9d2f6ed/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 01:30:27,335 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ae7db91-de54-4119-ac4a-1722e9d2f6ed/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2021-12-07 01:30:37,317 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-07 01:30:37,317 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-07 01:30:37,511 INFO L263 TraceCheckSpWp]: Trace formula consists of 28482 conjuncts, 47 conjunts are in the unsatisfiable core [2021-12-07 01:30:37,531 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:30:39,154 INFO L134 CoverageAnalysis]: Checked inductivity of 7755 backedges. 0 proven. 2795 refuted. 0 times theorem prover too weak. 4960 trivial. 0 not checked. [2021-12-07 01:30:39,154 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 01:30:41,335 INFO L134 CoverageAnalysis]: Checked inductivity of 7755 backedges. 0 proven. 1871 refuted. 0 times theorem prover too weak. 5884 trivial. 0 not checked. [2021-12-07 01:30:41,336 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:30:41,336 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1920121935] [2021-12-07 01:30:41,336 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-07 01:30:41,336 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1472735725] [2021-12-07 01:30:41,336 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1472735725] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-07 01:30:41,336 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-07 01:30:41,337 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 47] total 93 [2021-12-07 01:30:41,337 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283439220] [2021-12-07 01:30:41,337 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-07 01:30:41,338 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 94 states [2021-12-07 01:30:41,338 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:30:41,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2021-12-07 01:30:41,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2255, Invalid=6487, Unknown=0, NotChecked=0, Total=8742 [2021-12-07 01:30:41,342 INFO L87 Difference]: Start difference. First operand 3099 states and 4325 transitions. Second operand has 94 states, 93 states have (on average 6.827956989247312) internal successors, (635), 94 states have internal predecessors, (635), 46 states have call successors, (52), 24 states have call predecessors, (52), 24 states have return successors, (52), 46 states have call predecessors, (52), 46 states have call successors, (52) [2021-12-07 01:30:47,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:30:47,375 INFO L93 Difference]: Finished difference Result 4512 states and 6633 transitions. [2021-12-07 01:30:47,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 140 states. [2021-12-07 01:30:47,375 INFO L78 Accepts]: Start accepts. Automaton has has 94 states, 93 states have (on average 6.827956989247312) internal successors, (635), 94 states have internal predecessors, (635), 46 states have call successors, (52), 24 states have call predecessors, (52), 24 states have return successors, (52), 46 states have call predecessors, (52), 46 states have call successors, (52) Word has length 1345 [2021-12-07 01:30:47,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:30:47,398 INFO L225 Difference]: With dead ends: 4512 [2021-12-07 01:30:47,398 INFO L226 Difference]: Without dead ends: 4511 [2021-12-07 01:30:47,408 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2779 GetRequests, 2596 SyntacticMatches, 0 SemanticMatches, 183 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7507 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=10809, Invalid=23231, Unknown=0, NotChecked=0, Total=34040 [2021-12-07 01:30:47,408 INFO L933 BasicCegarLoop]: 256 mSDtfsCounter, 8258 mSDsluCounter, 2752 mSDsCounter, 0 mSdLazyCounter, 5146 mSolverCounterSat, 4435 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8268 SdHoareTripleChecker+Valid, 3008 SdHoareTripleChecker+Invalid, 9581 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4435 IncrementalHoareTripleChecker+Valid, 5146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2021-12-07 01:30:47,409 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8268 Valid, 3008 Invalid, 9581 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4435 Valid, 5146 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2021-12-07 01:30:47,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4511 states. [2021-12-07 01:30:47,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4511 to 4491. [2021-12-07 01:30:47,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4491 states, 3524 states have (on average 1.3561293984108966) internal successors, (4779), 4292 states have internal predecessors, (4779), 871 states have call successors, (871), 93 states have call predecessors, (871), 95 states have return successors, (931), 151 states have call predecessors, (931), 871 states have call successors, (931) [2021-12-07 01:30:47,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4491 states to 4491 states and 6581 transitions. [2021-12-07 01:30:47,591 INFO L78 Accepts]: Start accepts. Automaton has 4491 states and 6581 transitions. Word has length 1345 [2021-12-07 01:30:47,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:30:47,592 INFO L470 AbstractCegarLoop]: Abstraction has 4491 states and 6581 transitions. [2021-12-07 01:30:47,592 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 94 states, 93 states have (on average 6.827956989247312) internal successors, (635), 94 states have internal predecessors, (635), 46 states have call successors, (52), 24 states have call predecessors, (52), 24 states have return successors, (52), 46 states have call predecessors, (52), 46 states have call successors, (52) [2021-12-07 01:30:47,592 INFO L276 IsEmpty]: Start isEmpty. Operand 4491 states and 6581 transitions. [2021-12-07 01:30:47,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1634 [2021-12-07 01:30:47,615 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:30:47,615 INFO L514 BasicCegarLoop]: trace histogram [47, 46, 46, 46, 46, 46, 46, 46, 46, 45, 45, 45, 24, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 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] [2021-12-07 01:30:47,755 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ae7db91-de54-4119-ac4a-1722e9d2f6ed/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2021-12-07 01:30:47,816 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ae7db91-de54-4119-ac4a-1722e9d2f6ed/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:30:47,817 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-07 01:30:47,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:30:47,818 INFO L85 PathProgramCache]: Analyzing trace with hash 1937657768, now seen corresponding path program 3 times [2021-12-07 01:30:47,818 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:30:47,818 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1501095397] [2021-12-07 01:30:47,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:30:47,819 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:30:48,739 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-07 01:30:48,739 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2038055606] [2021-12-07 01:30:48,739 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-07 01:30:48,739 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:30:48,739 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ae7db91-de54-4119-ac4a-1722e9d2f6ed/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:30:48,740 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ae7db91-de54-4119-ac4a-1722e9d2f6ed/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 01:30:48,743 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ae7db91-de54-4119-ac4a-1722e9d2f6ed/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2021-12-07 01:30:56,641 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-12-07 01:30:56,641 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-07 01:30:56,672 INFO L263 TraceCheckSpWp]: Trace formula consists of 2992 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-07 01:30:56,686 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:30:57,599 INFO L134 CoverageAnalysis]: Checked inductivity of 17427 backedges. 452 proven. 0 refuted. 0 times theorem prover too weak. 16975 trivial. 0 not checked. [2021-12-07 01:30:57,599 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 01:30:57,599 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:30:57,599 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1501095397] [2021-12-07 01:30:57,599 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-07 01:30:57,599 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2038055606] [2021-12-07 01:30:57,599 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2038055606] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:30:57,599 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:30:57,600 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-07 01:30:57,600 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041456594] [2021-12-07 01:30:57,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:30:57,601 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-07 01:30:57,601 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:30:57,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-07 01:30:57,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-07 01:30:57,602 INFO L87 Difference]: Start difference. First operand 4491 states and 6581 transitions. Second operand has 6 states, 5 states have (on average 29.4) internal successors, (147), 6 states have internal predecessors, (147), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-12-07 01:30:57,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:30:57,971 INFO L93 Difference]: Finished difference Result 7366 states and 11067 transitions. [2021-12-07 01:30:57,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-07 01:30:57,972 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 29.4) internal successors, (147), 6 states have internal predecessors, (147), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 1633 [2021-12-07 01:30:57,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:30:57,996 INFO L225 Difference]: With dead ends: 7366 [2021-12-07 01:30:57,996 INFO L226 Difference]: Without dead ends: 7365 [2021-12-07 01:30:57,998 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1641 GetRequests, 1632 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2021-12-07 01:30:57,999 INFO L933 BasicCegarLoop]: 244 mSDtfsCounter, 498 mSDsluCounter, 457 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 109 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 506 SdHoareTripleChecker+Valid, 701 SdHoareTripleChecker+Invalid, 241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-07 01:30:57,999 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [506 Valid, 701 Invalid, 241 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [109 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-07 01:30:58,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7365 states. [2021-12-07 01:30:58,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7365 to 6902. [2021-12-07 01:30:58,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6902 states, 5231 states have (on average 1.4119671190976868) internal successors, (7386), 6524 states have internal predecessors, (7386), 1486 states have call successors, (1486), 182 states have call predecessors, (1486), 184 states have return successors, (1546), 240 states have call predecessors, (1546), 1486 states have call successors, (1546) [2021-12-07 01:30:58,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6902 states to 6902 states and 10418 transitions. [2021-12-07 01:30:58,297 INFO L78 Accepts]: Start accepts. Automaton has 6902 states and 10418 transitions. Word has length 1633 [2021-12-07 01:30:58,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:30:58,298 INFO L470 AbstractCegarLoop]: Abstraction has 6902 states and 10418 transitions. [2021-12-07 01:30:58,298 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 29.4) internal successors, (147), 6 states have internal predecessors, (147), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-12-07 01:30:58,298 INFO L276 IsEmpty]: Start isEmpty. Operand 6902 states and 10418 transitions. [2021-12-07 01:30:58,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1636 [2021-12-07 01:30:58,329 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:30:58,329 INFO L514 BasicCegarLoop]: trace histogram [47, 46, 46, 46, 46, 46, 46, 46, 46, 44, 44, 44, 24, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 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, 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] [2021-12-07 01:30:58,429 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ae7db91-de54-4119-ac4a-1722e9d2f6ed/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2021-12-07 01:30:58,530 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ae7db91-de54-4119-ac4a-1722e9d2f6ed/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:30:58,530 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-07 01:30:58,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:30:58,531 INFO L85 PathProgramCache]: Analyzing trace with hash 386663990, now seen corresponding path program 1 times [2021-12-07 01:30:58,531 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:30:58,531 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081786634] [2021-12-07 01:30:58,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:30:58,531 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:30:59,468 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-07 01:30:59,468 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1383005306] [2021-12-07 01:30:59,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:30:59,468 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:30:59,468 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ae7db91-de54-4119-ac4a-1722e9d2f6ed/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:30:59,469 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ae7db91-de54-4119-ac4a-1722e9d2f6ed/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 01:30:59,470 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ae7db91-de54-4119-ac4a-1722e9d2f6ed/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2021-12-07 01:31:10,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:31:10,819 INFO L263 TraceCheckSpWp]: Trace formula consists of 29350 conjuncts, 95 conjunts are in the unsatisfiable core [2021-12-07 01:31:10,841 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:31:13,639 INFO L134 CoverageAnalysis]: Checked inductivity of 17384 backedges. 0 proven. 12424 refuted. 0 times theorem prover too weak. 4960 trivial. 0 not checked. [2021-12-07 01:31:13,639 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 01:31:18,403 INFO L134 CoverageAnalysis]: Checked inductivity of 17384 backedges. 0 proven. 8284 refuted. 0 times theorem prover too weak. 9100 trivial. 0 not checked. [2021-12-07 01:31:18,403 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:31:18,403 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1081786634] [2021-12-07 01:31:18,403 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-07 01:31:18,403 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1383005306] [2021-12-07 01:31:18,403 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1383005306] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-07 01:31:18,403 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-07 01:31:18,404 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [94, 95] total 189 [2021-12-07 01:31:18,404 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508671181] [2021-12-07 01:31:18,404 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-07 01:31:18,406 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 190 states [2021-12-07 01:31:18,406 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:31:18,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 190 interpolants. [2021-12-07 01:31:18,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9119, Invalid=26791, Unknown=0, NotChecked=0, Total=35910 [2021-12-07 01:31:18,411 INFO L87 Difference]: Start difference. First operand 6902 states and 10418 transitions. Second operand has 190 states, 189 states have (on average 5.5396825396825395) internal successors, (1047), 190 states have internal predecessors, (1047), 94 states have call successors, (100), 48 states have call predecessors, (100), 48 states have return successors, (100), 94 states have call predecessors, (100), 94 states have call successors, (100) [2021-12-07 01:31:46,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:31:46,482 INFO L93 Difference]: Finished difference Result 12334 states and 19182 transitions. [2021-12-07 01:31:46,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 284 states. [2021-12-07 01:31:46,483 INFO L78 Accepts]: Start accepts. Automaton has has 190 states, 189 states have (on average 5.5396825396825395) internal successors, (1047), 190 states have internal predecessors, (1047), 94 states have call successors, (100), 48 states have call predecessors, (100), 48 states have return successors, (100), 94 states have call predecessors, (100), 94 states have call successors, (100) Word has length 1635 [2021-12-07 01:31:46,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:31:46,508 INFO L225 Difference]: With dead ends: 12334 [2021-12-07 01:31:46,508 INFO L226 Difference]: Without dead ends: 12333 [2021-12-07 01:31:46,521 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3455 GetRequests, 3080 SyntacticMatches, 0 SemanticMatches, 375 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32251 ImplicationChecksByTransitivity, 11.9s TimeCoverageRelationStatistics Valid=44649, Invalid=97103, Unknown=0, NotChecked=0, Total=141752 [2021-12-07 01:31:46,522 INFO L933 BasicCegarLoop]: 256 mSDtfsCounter, 18132 mSDsluCounter, 4107 mSDsCounter, 0 mSdLazyCounter, 11728 mSolverCounterSat, 9773 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18142 SdHoareTripleChecker+Valid, 4363 SdHoareTripleChecker+Invalid, 21501 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 9773 IncrementalHoareTripleChecker+Valid, 11728 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.2s IncrementalHoareTripleChecker+Time [2021-12-07 01:31:46,522 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [18142 Valid, 4363 Invalid, 21501 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [9773 Valid, 11728 Invalid, 0 Unknown, 0 Unchecked, 7.2s Time] [2021-12-07 01:31:46,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12333 states. [2021-12-07 01:31:47,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12333 to 12278. [2021-12-07 01:31:47,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12278 states, 8879 states have (on average 1.4589480797387093) internal successors, (12954), 11564 states have internal predecessors, (12954), 3022 states have call successors, (3022), 374 states have call predecessors, (3022), 376 states have return successors, (3082), 432 states have call predecessors, (3082), 3022 states have call successors, (3082) [2021-12-07 01:31:47,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12278 states to 12278 states and 19058 transitions. [2021-12-07 01:31:47,092 INFO L78 Accepts]: Start accepts. Automaton has 12278 states and 19058 transitions. Word has length 1635 [2021-12-07 01:31:47,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:31:47,094 INFO L470 AbstractCegarLoop]: Abstraction has 12278 states and 19058 transitions. [2021-12-07 01:31:47,094 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 190 states, 189 states have (on average 5.5396825396825395) internal successors, (1047), 190 states have internal predecessors, (1047), 94 states have call successors, (100), 48 states have call predecessors, (100), 48 states have return successors, (100), 94 states have call predecessors, (100), 94 states have call successors, (100) [2021-12-07 01:31:47,094 INFO L276 IsEmpty]: Start isEmpty. Operand 12278 states and 19058 transitions. [2021-12-07 01:31:47,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2212 [2021-12-07 01:31:47,157 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:31:47,158 INFO L514 BasicCegarLoop]: trace histogram [95, 94, 94, 94, 94, 94, 94, 94, 94, 92, 92, 92, 24, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 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, 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] [2021-12-07 01:31:47,310 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ae7db91-de54-4119-ac4a-1722e9d2f6ed/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2021-12-07 01:31:47,358 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ae7db91-de54-4119-ac4a-1722e9d2f6ed/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2021-12-07 01:31:47,359 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-07 01:31:47,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:31:47,359 INFO L85 PathProgramCache]: Analyzing trace with hash -420417610, now seen corresponding path program 2 times [2021-12-07 01:31:47,359 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:31:47,360 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010200655] [2021-12-07 01:31:47,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:31:47,360 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:31:49,297 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-07 01:31:49,297 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2142107249] [2021-12-07 01:31:49,298 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-07 01:31:49,298 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:31:49,298 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ae7db91-de54-4119-ac4a-1722e9d2f6ed/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:31:49,316 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ae7db91-de54-4119-ac4a-1722e9d2f6ed/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 01:31:49,376 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ae7db91-de54-4119-ac4a-1722e9d2f6ed/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2021-12-07 01:32:02,986 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-07 01:32:02,986 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-07 01:32:03,210 INFO L263 TraceCheckSpWp]: Trace formula consists of 31078 conjuncts, 191 conjunts are in the unsatisfiable core [2021-12-07 01:32:03,249 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:32:10,564 INFO L134 CoverageAnalysis]: Checked inductivity of 57416 backedges. 0 proven. 52456 refuted. 0 times theorem prover too weak. 4960 trivial. 0 not checked. [2021-12-07 01:32:10,564 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 01:32:25,922 INFO L134 CoverageAnalysis]: Checked inductivity of 57416 backedges. 0 proven. 34972 refuted. 0 times theorem prover too weak. 22444 trivial. 0 not checked. [2021-12-07 01:32:25,922 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:32:25,923 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010200655] [2021-12-07 01:32:25,923 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-07 01:32:25,923 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2142107249] [2021-12-07 01:32:25,923 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2142107249] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-07 01:32:25,923 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-07 01:32:25,924 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [190, 191] total 381 [2021-12-07 01:32:25,924 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86588868] [2021-12-07 01:32:25,924 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-07 01:32:25,927 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 382 states [2021-12-07 01:32:25,927 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:32:25,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 382 interpolants. [2021-12-07 01:32:25,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36671, Invalid=108871, Unknown=0, NotChecked=0, Total=145542 [2021-12-07 01:32:25,940 INFO L87 Difference]: Start difference. First operand 12278 states and 19058 transitions. Second operand has 382 states, 381 states have (on average 4.889763779527559) internal successors, (1863), 382 states have internal predecessors, (1863), 190 states have call successors, (196), 96 states have call predecessors, (196), 96 states have return successors, (196), 190 states have call predecessors, (196), 190 states have call successors, (196) [2021-12-07 01:35:56,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:35:56,512 INFO L93 Difference]: Finished difference Result 23086 states and 36510 transitions. [2021-12-07 01:35:56,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 572 states. [2021-12-07 01:35:56,512 INFO L78 Accepts]: Start accepts. Automaton has has 382 states, 381 states have (on average 4.889763779527559) internal successors, (1863), 382 states have internal predecessors, (1863), 190 states have call successors, (196), 96 states have call predecessors, (196), 96 states have return successors, (196), 190 states have call predecessors, (196), 190 states have call successors, (196) Word has length 2211 [2021-12-07 01:35:56,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:35:56,564 INFO L225 Difference]: With dead ends: 23086 [2021-12-07 01:35:56,564 INFO L226 Difference]: Without dead ends: 23085 [2021-12-07 01:35:56,595 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4799 GetRequests, 4040 SyntacticMatches, 0 SemanticMatches, 759 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133579 ImplicationChecksByTransitivity, 47.2s TimeCoverageRelationStatistics Valid=181449, Invalid=396911, Unknown=0, NotChecked=0, Total=578360 [2021-12-07 01:35:56,596 INFO L933 BasicCegarLoop]: 256 mSDtfsCounter, 39079 mSDsluCounter, 6562 mSDsCounter, 0 mSdLazyCounter, 29850 mSolverCounterSat, 23203 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39089 SdHoareTripleChecker+Valid, 6818 SdHoareTripleChecker+Invalid, 53053 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 23203 IncrementalHoareTripleChecker+Valid, 29850 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.6s IncrementalHoareTripleChecker+Time [2021-12-07 01:35:56,596 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [39089 Valid, 6818 Invalid, 53053 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [23203 Valid, 29850 Invalid, 0 Unknown, 0 Unchecked, 19.6s Time] [2021-12-07 01:35:56,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23085 states. [2021-12-07 01:35:57,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23085 to 23030. [2021-12-07 01:35:57,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23030 states, 16175 states have (on average 1.4893353941267389) internal successors, (24090), 21644 states have internal predecessors, (24090), 6094 states have call successors, (6094), 758 states have call predecessors, (6094), 760 states have return successors, (6154), 816 states have call predecessors, (6154), 6094 states have call successors, (6154) [2021-12-07 01:35:57,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23030 states to 23030 states and 36338 transitions. [2021-12-07 01:35:57,626 INFO L78 Accepts]: Start accepts. Automaton has 23030 states and 36338 transitions. Word has length 2211 [2021-12-07 01:35:57,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:35:57,628 INFO L470 AbstractCegarLoop]: Abstraction has 23030 states and 36338 transitions. [2021-12-07 01:35:57,628 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 382 states, 381 states have (on average 4.889763779527559) internal successors, (1863), 382 states have internal predecessors, (1863), 190 states have call successors, (196), 96 states have call predecessors, (196), 96 states have return successors, (196), 190 states have call predecessors, (196), 190 states have call successors, (196) [2021-12-07 01:35:57,628 INFO L276 IsEmpty]: Start isEmpty. Operand 23030 states and 36338 transitions. [2021-12-07 01:35:57,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3364 [2021-12-07 01:35:57,715 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:35:57,717 INFO L514 BasicCegarLoop]: trace histogram [191, 190, 190, 190, 190, 190, 190, 190, 190, 188, 188, 188, 24, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 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, 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] [2021-12-07 01:35:57,890 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ae7db91-de54-4119-ac4a-1722e9d2f6ed/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2021-12-07 01:35:57,917 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ae7db91-de54-4119-ac4a-1722e9d2f6ed/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2021-12-07 01:35:57,918 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-07 01:35:57,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:35:57,919 INFO L85 PathProgramCache]: Analyzing trace with hash -780746058, now seen corresponding path program 3 times [2021-12-07 01:35:57,919 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:35:57,919 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734245783] [2021-12-07 01:35:57,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:35:57,919 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:35:59,010 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-07 01:35:59,010 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1548594147] [2021-12-07 01:35:59,010 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-07 01:35:59,010 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:35:59,010 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ae7db91-de54-4119-ac4a-1722e9d2f6ed/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:35:59,011 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ae7db91-de54-4119-ac4a-1722e9d2f6ed/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 01:35:59,012 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ae7db91-de54-4119-ac4a-1722e9d2f6ed/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2021-12-07 01:36:09,118 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-12-07 01:36:09,118 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-07 01:36:09,151 INFO L263 TraceCheckSpWp]: Trace formula consists of 2994 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-07 01:36:09,182 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:36:10,945 INFO L134 CoverageAnalysis]: Checked inductivity of 220424 backedges. 1893 proven. 0 refuted. 0 times theorem prover too weak. 218531 trivial. 0 not checked. [2021-12-07 01:36:10,945 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 01:36:10,945 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:36:10,946 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734245783] [2021-12-07 01:36:10,946 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-07 01:36:10,946 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1548594147] [2021-12-07 01:36:10,946 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1548594147] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:36:10,946 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:36:10,947 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-07 01:36:10,947 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947369670] [2021-12-07 01:36:10,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:36:10,948 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-07 01:36:10,948 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:36:10,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-07 01:36:10,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-07 01:36:10,949 INFO L87 Difference]: Start difference. First operand 23030 states and 36338 transitions. Second operand has 6 states, 5 states have (on average 30.0) internal successors, (150), 6 states have internal predecessors, (150), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-07 01:36:12,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:36:12,849 INFO L93 Difference]: Finished difference Result 45984 states and 72071 transitions. [2021-12-07 01:36:12,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-07 01:36:12,850 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 30.0) internal successors, (150), 6 states have internal predecessors, (150), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 3363 [2021-12-07 01:36:12,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:36:12,953 INFO L225 Difference]: With dead ends: 45984 [2021-12-07 01:36:12,953 INFO L226 Difference]: Without dead ends: 45983 [2021-12-07 01:36:12,974 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3371 GetRequests, 3362 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2021-12-07 01:36:12,975 INFO L933 BasicCegarLoop]: 243 mSDtfsCounter, 282 mSDsluCounter, 470 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 289 SdHoareTripleChecker+Valid, 713 SdHoareTripleChecker+Invalid, 230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-07 01:36:12,975 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [289 Valid, 713 Invalid, 230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-07 01:36:13,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45983 states. [2021-12-07 01:36:14,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45983 to 37518. [2021-12-07 01:36:14,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37518 states, 26913 states have (on average 1.5040315089362017) internal successors, (40478), 35001 states have internal predecessors, (40478), 9278 states have call successors, (9278), 1324 states have call predecessors, (9278), 1326 states have return successors, (9338), 1381 states have call predecessors, (9338), 9278 states have call successors, (9338) [2021-12-07 01:36:14,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37518 states to 37518 states and 59094 transitions. [2021-12-07 01:36:14,968 INFO L78 Accepts]: Start accepts. Automaton has 37518 states and 59094 transitions. Word has length 3363 [2021-12-07 01:36:14,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:36:14,971 INFO L470 AbstractCegarLoop]: Abstraction has 37518 states and 59094 transitions. [2021-12-07 01:36:14,971 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 30.0) internal successors, (150), 6 states have internal predecessors, (150), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-07 01:36:14,971 INFO L276 IsEmpty]: Start isEmpty. Operand 37518 states and 59094 transitions. [2021-12-07 01:36:15,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3365 [2021-12-07 01:36:15,083 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:36:15,084 INFO L514 BasicCegarLoop]: trace histogram [191, 190, 190, 190, 190, 190, 189, 189, 189, 189, 189, 189, 24, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 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] [2021-12-07 01:36:15,212 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ae7db91-de54-4119-ac4a-1722e9d2f6ed/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2021-12-07 01:36:15,284 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ae7db91-de54-4119-ac4a-1722e9d2f6ed/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2021-12-07 01:36:15,286 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-07 01:36:15,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:36:15,289 INFO L85 PathProgramCache]: Analyzing trace with hash 788773725, now seen corresponding path program 1 times [2021-12-07 01:36:15,289 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:36:15,290 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1886206855] [2021-12-07 01:36:15,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:36:15,291 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:36:16,338 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-07 01:36:16,339 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1157255888] [2021-12-07 01:36:16,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:36:16,339 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:36:16,339 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ae7db91-de54-4119-ac4a-1722e9d2f6ed/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:36:16,340 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ae7db91-de54-4119-ac4a-1722e9d2f6ed/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 01:36:16,340 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ae7db91-de54-4119-ac4a-1722e9d2f6ed/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2021-12-07 01:36:30,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:36:30,575 INFO L263 TraceCheckSpWp]: Trace formula consists of 34537 conjuncts, 383 conjunts are in the unsatisfiable core [2021-12-07 01:36:30,831 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:36:55,961 INFO L134 CoverageAnalysis]: Checked inductivity of 219855 backedges. 0 proven. 214895 refuted. 0 times theorem prover too weak. 4960 trivial. 0 not checked. [2021-12-07 01:36:55,961 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 01:37:56,633 INFO L134 CoverageAnalysis]: Checked inductivity of 219855 backedges. 0 proven. 143831 refuted. 0 times theorem prover too weak. 76024 trivial. 0 not checked. [2021-12-07 01:37:56,633 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:37:56,633 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1886206855] [2021-12-07 01:37:56,633 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-07 01:37:56,634 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1157255888] [2021-12-07 01:37:56,634 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1157255888] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-07 01:37:56,634 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-07 01:37:56,636 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [382, 383] total 765 [2021-12-07 01:37:56,636 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135170301] [2021-12-07 01:37:56,636 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-07 01:37:56,640 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 766 states [2021-12-07 01:37:56,640 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:37:56,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 766 interpolants. [2021-12-07 01:37:56,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=147071, Invalid=438919, Unknown=0, NotChecked=0, Total=585990 [2021-12-07 01:37:56,682 INFO L87 Difference]: Start difference. First operand 37518 states and 59094 transitions. Second operand has 766 states, 765 states have (on average 4.580392156862745) internal successors, (3504), 766 states have internal predecessors, (3504), 380 states have call successors, (386), 191 states have call predecessors, (386), 191 states have return successors, (386), 380 states have call predecessors, (386), 380 states have call successors, (386)