./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 f8e1c903 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_648e299c-18c5-4bc3-a09c-86b2fa82e68f/bin/uautomizer-IVEQpCNsaX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_648e299c-18c5-4bc3-a09c-86b2fa82e68f/bin/uautomizer-IVEQpCNsaX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_648e299c-18c5-4bc3-a09c-86b2fa82e68f/bin/uautomizer-IVEQpCNsaX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_648e299c-18c5-4bc3-a09c-86b2fa82e68f/bin/uautomizer-IVEQpCNsaX/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_648e299c-18c5-4bc3-a09c-86b2fa82e68f/bin/uautomizer-IVEQpCNsaX/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_648e299c-18c5-4bc3-a09c-86b2fa82e68f/bin/uautomizer-IVEQpCNsaX --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 0.2.1-dev-f8e1c90 [2021-11-09 09:19:03,389 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-09 09:19:03,393 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-09 09:19:03,461 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-09 09:19:03,461 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-09 09:19:03,465 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-09 09:19:03,467 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-09 09:19:03,471 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-09 09:19:03,474 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-09 09:19:03,480 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-09 09:19:03,481 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-09 09:19:03,483 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-09 09:19:03,483 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-09 09:19:03,486 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-09 09:19:03,488 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-09 09:19:03,492 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-09 09:19:03,493 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-09 09:19:03,494 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-09 09:19:03,497 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-09 09:19:03,505 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-09 09:19:03,507 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-09 09:19:03,508 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-09 09:19:03,511 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-09 09:19:03,512 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-09 09:19:03,521 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-09 09:19:03,521 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-09 09:19:03,522 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-09 09:19:03,524 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-09 09:19:03,525 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-09 09:19:03,526 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-09 09:19:03,526 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-09 09:19:03,527 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-09 09:19:03,529 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-09 09:19:03,531 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-09 09:19:03,532 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-09 09:19:03,532 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-09 09:19:03,533 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-09 09:19:03,533 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-09 09:19:03,534 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-09 09:19:03,535 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-09 09:19:03,535 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-09 09:19:03,536 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_648e299c-18c5-4bc3-a09c-86b2fa82e68f/bin/uautomizer-IVEQpCNsaX/config/svcomp-Overflow-32bit-Automizer_Default.epf [2021-11-09 09:19:03,575 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-09 09:19:03,576 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-09 09:19:03,576 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-09 09:19:03,576 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-09 09:19:03,578 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-09 09:19:03,578 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-09 09:19:03,578 INFO L138 SettingsManager]: * Use SBE=true [2021-11-09 09:19:03,579 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-09 09:19:03,579 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-09 09:19:03,579 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-09 09:19:03,580 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-09 09:19:03,580 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-09 09:19:03,581 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-09 09:19:03,581 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-09 09:19:03,581 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-09 09:19:03,581 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-09 09:19:03,582 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-11-09 09:19:03,582 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-09 09:19:03,582 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-09 09:19:03,582 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-09 09:19:03,583 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-09 09:19:03,583 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-09 09:19:03,583 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-09 09:19:03,583 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-09 09:19:03,584 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-09 09:19:03,584 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-09 09:19:03,584 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-09 09:19:03,584 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-09 09:19:03,585 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-09 09:19:03,586 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-09 09:19:03,586 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-09 09:19:03,587 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-09 09:19:03,587 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_648e299c-18c5-4bc3-a09c-86b2fa82e68f/bin/uautomizer-IVEQpCNsaX/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_648e299c-18c5-4bc3-a09c-86b2fa82e68f/bin/uautomizer-IVEQpCNsaX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2dcad53e9f7fd6e0b6384d19db4719ec6aa2601fd94c6ce0d3c746f1ec6b3601 [2021-11-09 09:19:03,877 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-09 09:19:03,914 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-09 09:19:03,916 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-09 09:19:03,918 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-09 09:19:03,918 INFO L275 PluginConnector]: CDTParser initialized [2021-11-09 09:19:03,919 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_648e299c-18c5-4bc3-a09c-86b2fa82e68f/bin/uautomizer-IVEQpCNsaX/../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test4-3.i [2021-11-09 09:19:03,994 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_648e299c-18c5-4bc3-a09c-86b2fa82e68f/bin/uautomizer-IVEQpCNsaX/data/12dd11609/6dfa27681ef14e1bb6029568ff6b177a/FLAGa31ad0b12 [2021-11-09 09:19:04,613 INFO L306 CDTParser]: Found 1 translation units. [2021-11-09 09:19:04,614 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_648e299c-18c5-4bc3-a09c-86b2fa82e68f/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test4-3.i [2021-11-09 09:19:04,648 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_648e299c-18c5-4bc3-a09c-86b2fa82e68f/bin/uautomizer-IVEQpCNsaX/data/12dd11609/6dfa27681ef14e1bb6029568ff6b177a/FLAGa31ad0b12 [2021-11-09 09:19:04,809 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_648e299c-18c5-4bc3-a09c-86b2fa82e68f/bin/uautomizer-IVEQpCNsaX/data/12dd11609/6dfa27681ef14e1bb6029568ff6b177a [2021-11-09 09:19:04,812 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-09 09:19:04,814 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-09 09:19:04,836 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-09 09:19:04,836 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-09 09:19:04,839 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-09 09:19:04,840 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 09:19:04" (1/1) ... [2021-11-09 09:19:04,841 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@205e9f32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:19:04, skipping insertion in model container [2021-11-09 09:19:04,841 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 09:19:04" (1/1) ... [2021-11-09 09:19:04,849 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-09 09:19:04,939 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-09 09:19:05,489 WARN L228 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_648e299c-18c5-4bc3-a09c-86b2fa82e68f/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test4-3.i[33021,33034] [2021-11-09 09:19:05,647 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 09:19:05,658 INFO L203 MainTranslator]: Completed pre-run [2021-11-09 09:19:05,711 WARN L228 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_648e299c-18c5-4bc3-a09c-86b2fa82e68f/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test4-3.i[33021,33034] [2021-11-09 09:19:05,836 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 09:19:05,874 INFO L208 MainTranslator]: Completed translation [2021-11-09 09:19:05,874 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:19:05 WrapperNode [2021-11-09 09:19:05,875 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-09 09:19:05,876 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-09 09:19:05,876 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-09 09:19:05,876 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-09 09:19:05,884 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:19:05" (1/1) ... [2021-11-09 09:19:05,923 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:19:05" (1/1) ... [2021-11-09 09:19:06,037 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-09 09:19:06,038 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-09 09:19:06,038 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-09 09:19:06,039 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-09 09:19:06,048 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:19:05" (1/1) ... [2021-11-09 09:19:06,048 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:19:05" (1/1) ... [2021-11-09 09:19:06,062 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:19:05" (1/1) ... [2021-11-09 09:19:06,063 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:19:05" (1/1) ... [2021-11-09 09:19:06,134 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:19:05" (1/1) ... [2021-11-09 09:19:06,154 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:19:05" (1/1) ... [2021-11-09 09:19:06,160 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:19:05" (1/1) ... [2021-11-09 09:19:06,174 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-09 09:19:06,175 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-09 09:19:06,175 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-09 09:19:06,175 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-09 09:19:06,176 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:19:05" (1/1) ... [2021-11-09 09:19:06,196 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-09 09:19:06,213 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_648e299c-18c5-4bc3-a09c-86b2fa82e68f/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:19:06,233 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_648e299c-18c5-4bc3-a09c-86b2fa82e68f/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-09 09:19:06,262 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_648e299c-18c5-4bc3-a09c-86b2fa82e68f/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-09 09:19:06,289 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-09 09:19:06,290 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-09 09:19:06,290 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-09 09:19:06,290 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-09 09:19:06,290 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-09 09:19:06,290 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-09 09:19:06,291 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-09 09:19:06,291 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-09 09:19:06,291 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-09 09:19:06,291 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-09 09:19:09,143 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-09 09:19:09,143 INFO L299 CfgBuilder]: Removed 115 assume(true) statements. [2021-11-09 09:19:09,147 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 09:19:09 BoogieIcfgContainer [2021-11-09 09:19:09,147 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-09 09:19:09,149 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-09 09:19:09,149 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-09 09:19:09,153 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-09 09:19:09,153 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 09:19:04" (1/3) ... [2021-11-09 09:19:09,154 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d29540f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 09:19:09, skipping insertion in model container [2021-11-09 09:19:09,154 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:19:05" (2/3) ... [2021-11-09 09:19:09,155 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d29540f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 09:19:09, skipping insertion in model container [2021-11-09 09:19:09,155 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 09:19:09" (3/3) ... [2021-11-09 09:19:09,159 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_BER_test4-3.i [2021-11-09 09:19:09,166 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-09 09:19:09,166 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-11-09 09:19:09,239 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-09 09:19:09,251 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 [2021-11-09 09:19:09,251 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-11-09 09:19:09,300 INFO L276 IsEmpty]: Start isEmpty. Operand has 263 states, 256 states have (on average 1.72265625) internal successors, (441), 262 states have internal predecessors, (441), 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) [2021-11-09 09:19:09,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-09 09:19:09,306 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:19:09,306 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-09 09:19:09,307 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)] === [2021-11-09 09:19:09,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:19:09,316 INFO L85 PathProgramCache]: Analyzing trace with hash 890350939, now seen corresponding path program 1 times [2021-11-09 09:19:09,327 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:19:09,328 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014385045] [2021-11-09 09:19:09,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:19:09,329 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:19:09,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:19:09,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:19:09,559 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:19:09,560 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2014385045] [2021-11-09 09:19:09,561 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2014385045] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:19:09,561 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:19:09,561 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 09:19:09,563 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90663385] [2021-11-09 09:19:09,568 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 09:19:09,568 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:19:09,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 09:19:09,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 09:19:09,586 INFO L87 Difference]: Start difference. First operand has 263 states, 256 states have (on average 1.72265625) internal successors, (441), 262 states have internal predecessors, (441), 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) 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) [2021-11-09 09:19:09,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:19:09,693 INFO L93 Difference]: Finished difference Result 699 states and 1179 transitions. [2021-11-09 09:19:09,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 09:19:09,695 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 [2021-11-09 09:19:09,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:19:09,724 INFO L225 Difference]: With dead ends: 699 [2021-11-09 09:19:09,725 INFO L226 Difference]: Without dead ends: 384 [2021-11-09 09:19:09,733 INFO L786 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 [2021-11-09 09:19:09,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 384 states. [2021-11-09 09:19:09,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 384 to 212. [2021-11-09 09:19:09,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212 states, 207 states have (on average 1.3381642512077294) internal successors, (277), 211 states have internal predecessors, (277), 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) [2021-11-09 09:19:09,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 277 transitions. [2021-11-09 09:19:09,835 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 277 transitions. Word has length 6 [2021-11-09 09:19:09,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:19:09,835 INFO L470 AbstractCegarLoop]: Abstraction has 212 states and 277 transitions. [2021-11-09 09:19:09,835 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) [2021-11-09 09:19:09,836 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 277 transitions. [2021-11-09 09:19:09,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-11-09 09:19:09,841 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:19:09,842 INFO L513 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] [2021-11-09 09:19:09,842 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-09 09:19:09,843 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)] === [2021-11-09 09:19:09,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:19:09,843 INFO L85 PathProgramCache]: Analyzing trace with hash -1182414084, now seen corresponding path program 1 times [2021-11-09 09:19:09,844 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:19:09,844 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997892801] [2021-11-09 09:19:09,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:19:09,845 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:19:09,874 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 09:19:09,875 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [102575799] [2021-11-09 09:19:09,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:19:09,875 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:19:09,875 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_648e299c-18c5-4bc3-a09c-86b2fa82e68f/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:19:09,877 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_648e299c-18c5-4bc3-a09c-86b2fa82e68f/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 09:19:09,907 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_648e299c-18c5-4bc3-a09c-86b2fa82e68f/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-09 09:19:10,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:19:10,157 INFO L263 TraceCheckSpWp]: Trace formula consists of 308 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-09 09:19:10,167 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:19:10,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:19:10,411 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:19:10,411 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997892801] [2021-11-09 09:19:10,411 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 09:19:10,412 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [102575799] [2021-11-09 09:19:10,412 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [102575799] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:19:10,412 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:19:10,412 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 09:19:10,413 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13274900] [2021-11-09 09:19:10,414 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 09:19:10,414 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:19:10,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 09:19:10,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 09:19:10,416 INFO L87 Difference]: Start difference. First operand 212 states and 277 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) [2021-11-09 09:19:10,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:19:10,506 INFO L93 Difference]: Finished difference Result 439 states and 579 transitions. [2021-11-09 09:19:10,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 09:19:10,507 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 [2021-11-09 09:19:10,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:19:10,513 INFO L225 Difference]: With dead ends: 439 [2021-11-09 09:19:10,514 INFO L226 Difference]: Without dead ends: 233 [2021-11-09 09:19:10,516 INFO L786 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 [2021-11-09 09:19:10,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2021-11-09 09:19:10,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 232. [2021-11-09 09:19:10,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232 states, 227 states have (on average 1.3083700440528634) internal successors, (297), 231 states have internal predecessors, (297), 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) [2021-11-09 09:19:10,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 297 transitions. [2021-11-09 09:19:10,543 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 297 transitions. Word has length 103 [2021-11-09 09:19:10,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:19:10,545 INFO L470 AbstractCegarLoop]: Abstraction has 232 states and 297 transitions. [2021-11-09 09:19:10,548 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) [2021-11-09 09:19:10,549 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 297 transitions. [2021-11-09 09:19:10,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-11-09 09:19:10,557 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:19:10,557 INFO L513 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] [2021-11-09 09:19:10,581 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_648e299c-18c5-4bc3-a09c-86b2fa82e68f/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-09 09:19:10,767 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_648e299c-18c5-4bc3-a09c-86b2fa82e68f/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:19:10,768 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)] === [2021-11-09 09:19:10,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:19:10,777 INFO L85 PathProgramCache]: Analyzing trace with hash -1209479686, now seen corresponding path program 1 times [2021-11-09 09:19:10,777 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:19:10,778 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458123616] [2021-11-09 09:19:10,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:19:10,779 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:19:10,829 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 09:19:10,830 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [428198786] [2021-11-09 09:19:10,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:19:10,830 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:19:10,830 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_648e299c-18c5-4bc3-a09c-86b2fa82e68f/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:19:10,832 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_648e299c-18c5-4bc3-a09c-86b2fa82e68f/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 09:19:10,855 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_648e299c-18c5-4bc3-a09c-86b2fa82e68f/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-09 09:19:11,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:19:11,143 INFO L263 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-09 09:19:11,156 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:19:11,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:19:11,397 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:19:11,397 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458123616] [2021-11-09 09:19:11,398 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 09:19:11,398 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [428198786] [2021-11-09 09:19:11,399 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [428198786] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:19:11,403 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:19:11,403 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 09:19:11,403 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427114706] [2021-11-09 09:19:11,404 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 09:19:11,404 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:19:11,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 09:19:11,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 09:19:11,405 INFO L87 Difference]: Start difference. First operand 232 states and 297 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) [2021-11-09 09:19:11,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:19:11,480 INFO L93 Difference]: Finished difference Result 479 states and 619 transitions. [2021-11-09 09:19:11,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 09:19:11,481 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 [2021-11-09 09:19:11,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:19:11,483 INFO L225 Difference]: With dead ends: 479 [2021-11-09 09:19:11,483 INFO L226 Difference]: Without dead ends: 253 [2021-11-09 09:19:11,484 INFO L786 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 [2021-11-09 09:19:11,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2021-11-09 09:19:11,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 252. [2021-11-09 09:19:11,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 252 states, 247 states have (on average 1.2834008097165992) internal successors, (317), 251 states have internal predecessors, (317), 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) [2021-11-09 09:19:11,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 317 transitions. [2021-11-09 09:19:11,498 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 317 transitions. Word has length 103 [2021-11-09 09:19:11,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:19:11,500 INFO L470 AbstractCegarLoop]: Abstraction has 252 states and 317 transitions. [2021-11-09 09:19:11,500 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) [2021-11-09 09:19:11,500 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 317 transitions. [2021-11-09 09:19:11,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-11-09 09:19:11,508 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:19:11,509 INFO L513 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] [2021-11-09 09:19:11,544 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_648e299c-18c5-4bc3-a09c-86b2fa82e68f/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-09 09:19:11,735 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_648e299c-18c5-4bc3-a09c-86b2fa82e68f/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-11-09 09:19:11,736 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)] === [2021-11-09 09:19:11,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:19:11,736 INFO L85 PathProgramCache]: Analyzing trace with hash -1232111940, now seen corresponding path program 1 times [2021-11-09 09:19:11,736 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:19:11,737 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392704861] [2021-11-09 09:19:11,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:19:11,737 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:19:11,761 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 09:19:11,761 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [548483449] [2021-11-09 09:19:11,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:19:11,762 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:19:11,762 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_648e299c-18c5-4bc3-a09c-86b2fa82e68f/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:19:11,763 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_648e299c-18c5-4bc3-a09c-86b2fa82e68f/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 09:19:11,795 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_648e299c-18c5-4bc3-a09c-86b2fa82e68f/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-09 09:19:12,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:19:12,077 INFO L263 TraceCheckSpWp]: Trace formula consists of 312 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-09 09:19:12,107 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:19:12,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:19:12,349 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:19:12,349 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392704861] [2021-11-09 09:19:12,349 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 09:19:12,350 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [548483449] [2021-11-09 09:19:12,350 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [548483449] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:19:12,350 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:19:12,350 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-09 09:19:12,350 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295385908] [2021-11-09 09:19:12,352 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-09 09:19:12,352 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:19:12,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-09 09:19:12,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-09 09:19:12,353 INFO L87 Difference]: Start difference. First operand 252 states and 317 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) [2021-11-09 09:19:12,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:19:12,431 INFO L93 Difference]: Finished difference Result 489 states and 619 transitions. [2021-11-09 09:19:12,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-09 09:19:12,432 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 [2021-11-09 09:19:12,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:19:12,434 INFO L225 Difference]: With dead ends: 489 [2021-11-09 09:19:12,434 INFO L226 Difference]: Without dead ends: 243 [2021-11-09 09:19:12,436 INFO L786 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 [2021-11-09 09:19:12,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2021-11-09 09:19:12,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 238. [2021-11-09 09:19:12,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238 states, 233 states have (on average 1.2703862660944205) internal successors, (296), 237 states have internal predecessors, (296), 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) [2021-11-09 09:19:12,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 296 transitions. [2021-11-09 09:19:12,443 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 296 transitions. Word has length 103 [2021-11-09 09:19:12,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:19:12,444 INFO L470 AbstractCegarLoop]: Abstraction has 238 states and 296 transitions. [2021-11-09 09:19:12,444 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) [2021-11-09 09:19:12,444 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 296 transitions. [2021-11-09 09:19:12,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-11-09 09:19:12,446 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:19:12,446 INFO L513 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] [2021-11-09 09:19:12,487 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_648e299c-18c5-4bc3-a09c-86b2fa82e68f/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-09 09:19:12,661 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_648e299c-18c5-4bc3-a09c-86b2fa82e68f/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:19:12,662 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)] === [2021-11-09 09:19:12,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:19:12,662 INFO L85 PathProgramCache]: Analyzing trace with hash -2118897460, now seen corresponding path program 1 times [2021-11-09 09:19:12,663 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:19:12,663 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768711042] [2021-11-09 09:19:12,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:19:12,663 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:19:12,703 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 09:19:12,703 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [953095383] [2021-11-09 09:19:12,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:19:12,703 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:19:12,704 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_648e299c-18c5-4bc3-a09c-86b2fa82e68f/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:19:12,711 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_648e299c-18c5-4bc3-a09c-86b2fa82e68f/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 09:19:12,715 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_648e299c-18c5-4bc3-a09c-86b2fa82e68f/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-09 09:19:13,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:19:13,029 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-09 09:19:13,046 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:19:13,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:19:13,409 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:19:13,410 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768711042] [2021-11-09 09:19:13,410 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 09:19:13,410 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [953095383] [2021-11-09 09:19:13,410 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [953095383] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:19:13,410 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:19:13,411 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-09 09:19:13,411 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416857264] [2021-11-09 09:19:13,411 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-09 09:19:13,412 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:19:13,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-09 09:19:13,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-09 09:19:13,413 INFO L87 Difference]: Start difference. First operand 238 states and 296 transitions. Second operand has 5 states, 5 states have (on average 20.6) internal successors, (103), 5 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) [2021-11-09 09:19:13,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:19:13,544 INFO L93 Difference]: Finished difference Result 704 states and 878 transitions. [2021-11-09 09:19:13,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-09 09:19:13,545 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.6) internal successors, (103), 5 states have internal predecessors, (103), 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 [2021-11-09 09:19:13,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:19:13,548 INFO L225 Difference]: With dead ends: 704 [2021-11-09 09:19:13,548 INFO L226 Difference]: Without dead ends: 472 [2021-11-09 09:19:13,549 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-09 09:19:13,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 472 states. [2021-11-09 09:19:13,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 472 to 261. [2021-11-09 09:19:13,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 261 states, 256 states have (on average 1.25390625) internal successors, (321), 260 states have internal predecessors, (321), 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) [2021-11-09 09:19:13,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 321 transitions. [2021-11-09 09:19:13,559 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 321 transitions. Word has length 103 [2021-11-09 09:19:13,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:19:13,560 INFO L470 AbstractCegarLoop]: Abstraction has 261 states and 321 transitions. [2021-11-09 09:19:13,560 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.6) internal successors, (103), 5 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) [2021-11-09 09:19:13,560 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 321 transitions. [2021-11-09 09:19:13,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-11-09 09:19:13,562 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:19:13,562 INFO L513 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] [2021-11-09 09:19:13,599 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_648e299c-18c5-4bc3-a09c-86b2fa82e68f/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-09 09:19:13,787 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_648e299c-18c5-4bc3-a09c-86b2fa82e68f/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:19:13,788 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)] === [2021-11-09 09:19:13,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:19:13,788 INFO L85 PathProgramCache]: Analyzing trace with hash 1031781074, now seen corresponding path program 1 times [2021-11-09 09:19:13,788 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:19:13,788 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027081321] [2021-11-09 09:19:13,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:19:13,789 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:19:13,814 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 09:19:13,814 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1331868832] [2021-11-09 09:19:13,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:19:13,814 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:19:13,815 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_648e299c-18c5-4bc3-a09c-86b2fa82e68f/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:19:13,815 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_648e299c-18c5-4bc3-a09c-86b2fa82e68f/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 09:19:13,820 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_648e299c-18c5-4bc3-a09c-86b2fa82e68f/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-09 09:19:14,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:19:14,171 INFO L263 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-09 09:19:14,176 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:19:14,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:19:14,429 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:19:14,429 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027081321] [2021-11-09 09:19:14,429 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 09:19:14,429 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1331868832] [2021-11-09 09:19:14,429 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1331868832] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:19:14,430 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:19:14,430 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-09 09:19:14,430 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026070105] [2021-11-09 09:19:14,431 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-09 09:19:14,432 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:19:14,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-09 09:19:14,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-09 09:19:14,433 INFO L87 Difference]: Start difference. First operand 261 states and 321 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) [2021-11-09 09:19:14,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:19:14,501 INFO L93 Difference]: Finished difference Result 488 states and 603 transitions. [2021-11-09 09:19:14,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-09 09:19:14,502 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 [2021-11-09 09:19:14,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:19:14,507 INFO L225 Difference]: With dead ends: 488 [2021-11-09 09:19:14,507 INFO L226 Difference]: Without dead ends: 233 [2021-11-09 09:19:14,508 INFO L786 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 [2021-11-09 09:19:14,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2021-11-09 09:19:14,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 229. [2021-11-09 09:19:14,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229 states, 224 states have (on average 1.2589285714285714) internal successors, (282), 228 states have internal predecessors, (282), 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) [2021-11-09 09:19:14,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 282 transitions. [2021-11-09 09:19:14,521 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 282 transitions. Word has length 103 [2021-11-09 09:19:14,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:19:14,521 INFO L470 AbstractCegarLoop]: Abstraction has 229 states and 282 transitions. [2021-11-09 09:19:14,522 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) [2021-11-09 09:19:14,522 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 282 transitions. [2021-11-09 09:19:14,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-11-09 09:19:14,523 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:19:14,524 INFO L513 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] [2021-11-09 09:19:14,565 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_648e299c-18c5-4bc3-a09c-86b2fa82e68f/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-09 09:19:14,740 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_648e299c-18c5-4bc3-a09c-86b2fa82e68f/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-11-09 09:19:14,740 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-09 09:19:14,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:19:14,741 INFO L85 PathProgramCache]: Analyzing trace with hash -2145963062, now seen corresponding path program 1 times [2021-11-09 09:19:14,741 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:19:14,741 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899951154] [2021-11-09 09:19:14,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:19:14,741 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:19:14,766 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 09:19:14,766 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [749680223] [2021-11-09 09:19:14,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:19:14,767 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:19:14,767 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_648e299c-18c5-4bc3-a09c-86b2fa82e68f/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:19:14,768 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_648e299c-18c5-4bc3-a09c-86b2fa82e68f/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 09:19:14,770 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_648e299c-18c5-4bc3-a09c-86b2fa82e68f/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-09 09:19:15,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:19:15,139 INFO L263 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-09 09:19:15,142 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:19:15,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:19:15,373 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:19:15,375 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899951154] [2021-11-09 09:19:15,375 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 09:19:15,375 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [749680223] [2021-11-09 09:19:15,376 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [749680223] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:19:15,376 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:19:15,376 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-09 09:19:15,376 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742088583] [2021-11-09 09:19:15,377 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-09 09:19:15,377 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:19:15,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-09 09:19:15,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-09 09:19:15,381 INFO L87 Difference]: Start difference. First operand 229 states and 282 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) [2021-11-09 09:19:15,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:19:15,505 INFO L93 Difference]: Finished difference Result 523 states and 644 transitions. [2021-11-09 09:19:15,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-09 09:19:15,506 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 [2021-11-09 09:19:15,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:19:15,510 INFO L225 Difference]: With dead ends: 523 [2021-11-09 09:19:15,510 INFO L226 Difference]: Without dead ends: 300 [2021-11-09 09:19:15,511 INFO L786 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 [2021-11-09 09:19:15,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2021-11-09 09:19:15,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 215. [2021-11-09 09:19:15,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 210 states have (on average 1.2428571428571429) internal successors, (261), 214 states have internal predecessors, (261), 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) [2021-11-09 09:19:15,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 261 transitions. [2021-11-09 09:19:15,529 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 261 transitions. Word has length 103 [2021-11-09 09:19:15,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:19:15,530 INFO L470 AbstractCegarLoop]: Abstraction has 215 states and 261 transitions. [2021-11-09 09:19:15,530 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) [2021-11-09 09:19:15,530 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 261 transitions. [2021-11-09 09:19:15,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-11-09 09:19:15,532 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:19:15,532 INFO L513 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] [2021-11-09 09:19:15,570 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_648e299c-18c5-4bc3-a09c-86b2fa82e68f/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-09 09:19:15,751 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_648e299c-18c5-4bc3-a09c-86b2fa82e68f/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-11-09 09:19:15,752 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-09 09:19:15,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:19:15,752 INFO L85 PathProgramCache]: Analyzing trace with hash -99394630, now seen corresponding path program 1 times [2021-11-09 09:19:15,752 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:19:15,752 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580650411] [2021-11-09 09:19:15,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:19:15,753 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:19:15,777 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 09:19:15,778 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [603654366] [2021-11-09 09:19:15,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:19:15,778 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:19:15,778 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_648e299c-18c5-4bc3-a09c-86b2fa82e68f/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:19:15,790 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_648e299c-18c5-4bc3-a09c-86b2fa82e68f/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 09:19:15,813 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_648e299c-18c5-4bc3-a09c-86b2fa82e68f/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-09 09:19:16,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:19:16,171 INFO L263 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-09 09:19:16,174 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:19:16,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:19:16,392 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:19:16,392 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580650411] [2021-11-09 09:19:16,392 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 09:19:16,393 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [603654366] [2021-11-09 09:19:16,393 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [603654366] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:19:16,393 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:19:16,393 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-09 09:19:16,393 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569182423] [2021-11-09 09:19:16,394 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-09 09:19:16,394 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:19:16,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-09 09:19:16,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-09 09:19:16,395 INFO L87 Difference]: Start difference. First operand 215 states and 261 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) [2021-11-09 09:19:16,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:19:16,450 INFO L93 Difference]: Finished difference Result 499 states and 603 transitions. [2021-11-09 09:19:16,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-09 09:19:16,451 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 [2021-11-09 09:19:16,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:19:16,453 INFO L225 Difference]: With dead ends: 499 [2021-11-09 09:19:16,453 INFO L226 Difference]: Without dead ends: 290 [2021-11-09 09:19:16,454 INFO L786 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 [2021-11-09 09:19:16,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2021-11-09 09:19:16,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 206. [2021-11-09 09:19:16,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206 states, 201 states have (on average 1.228855721393035) internal successors, (247), 205 states have internal predecessors, (247), 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) [2021-11-09 09:19:16,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 247 transitions. [2021-11-09 09:19:16,464 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 247 transitions. Word has length 103 [2021-11-09 09:19:16,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:19:16,464 INFO L470 AbstractCegarLoop]: Abstraction has 206 states and 247 transitions. [2021-11-09 09:19:16,465 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) [2021-11-09 09:19:16,465 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 247 transitions. [2021-11-09 09:19:16,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-11-09 09:19:16,466 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:19:16,466 INFO L513 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] [2021-11-09 09:19:16,506 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_648e299c-18c5-4bc3-a09c-86b2fa82e68f/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-09 09:19:16,679 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_648e299c-18c5-4bc3-a09c-86b2fa82e68f/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:19:16,680 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-09 09:19:16,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:19:16,680 INFO L85 PathProgramCache]: Analyzing trace with hash -122026884, now seen corresponding path program 1 times [2021-11-09 09:19:16,680 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:19:16,681 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098233305] [2021-11-09 09:19:16,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:19:16,681 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:19:16,715 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 09:19:16,716 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [497210935] [2021-11-09 09:19:16,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:19:16,716 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:19:16,716 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_648e299c-18c5-4bc3-a09c-86b2fa82e68f/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:19:16,717 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_648e299c-18c5-4bc3-a09c-86b2fa82e68f/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 09:19:16,727 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_648e299c-18c5-4bc3-a09c-86b2fa82e68f/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-09 09:19:17,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:19:17,112 INFO L263 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-09 09:19:17,116 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:19:17,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:19:17,486 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:19:17,486 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1098233305] [2021-11-09 09:19:17,486 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 09:19:17,486 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [497210935] [2021-11-09 09:19:17,487 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [497210935] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:19:17,487 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:19:17,487 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 09:19:17,487 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868462132] [2021-11-09 09:19:17,488 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-09 09:19:17,488 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:19:17,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-09 09:19:17,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-09 09:19:17,489 INFO L87 Difference]: Start difference. First operand 206 states and 247 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) [2021-11-09 09:19:17,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:19:17,554 INFO L93 Difference]: Finished difference Result 372 states and 443 transitions. [2021-11-09 09:19:17,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-09 09:19:17,555 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 [2021-11-09 09:19:17,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:19:17,558 INFO L225 Difference]: With dead ends: 372 [2021-11-09 09:19:17,558 INFO L226 Difference]: Without dead ends: 371 [2021-11-09 09:19:17,559 INFO L786 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 [2021-11-09 09:19:17,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 371 states. [2021-11-09 09:19:17,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 371 to 369. [2021-11-09 09:19:17,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 369 states, 364 states have (on average 1.2087912087912087) internal successors, (440), 368 states have internal predecessors, (440), 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) [2021-11-09 09:19:17,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 369 states to 369 states and 440 transitions. [2021-11-09 09:19:17,588 INFO L78 Accepts]: Start accepts. Automaton has 369 states and 440 transitions. Word has length 103 [2021-11-09 09:19:17,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:19:17,588 INFO L470 AbstractCegarLoop]: Abstraction has 369 states and 440 transitions. [2021-11-09 09:19:17,589 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) [2021-11-09 09:19:17,589 INFO L276 IsEmpty]: Start isEmpty. Operand 369 states and 440 transitions. [2021-11-09 09:19:17,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-11-09 09:19:17,590 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:19:17,590 INFO L513 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] [2021-11-09 09:19:17,635 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_648e299c-18c5-4bc3-a09c-86b2fa82e68f/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-09 09:19:17,811 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_648e299c-18c5-4bc3-a09c-86b2fa82e68f/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:19:17,812 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-09 09:19:17,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:19:17,812 INFO L85 PathProgramCache]: Analyzing trace with hash 512134685, now seen corresponding path program 1 times [2021-11-09 09:19:17,812 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:19:17,812 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1270876326] [2021-11-09 09:19:17,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:19:17,812 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:19:17,837 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 09:19:17,837 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [840431876] [2021-11-09 09:19:17,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:19:17,837 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:19:17,838 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_648e299c-18c5-4bc3-a09c-86b2fa82e68f/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:19:17,839 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_648e299c-18c5-4bc3-a09c-86b2fa82e68f/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 09:19:17,847 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_648e299c-18c5-4bc3-a09c-86b2fa82e68f/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-09 09:19:18,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:19:18,243 INFO L263 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-09 09:19:18,246 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:19:18,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:19:18,616 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:19:18,616 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1270876326] [2021-11-09 09:19:18,616 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 09:19:18,616 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [840431876] [2021-11-09 09:19:18,617 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [840431876] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:19:18,617 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:19:18,617 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 09:19:18,617 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947291327] [2021-11-09 09:19:18,618 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-09 09:19:18,618 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:19:18,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-09 09:19:18,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-09 09:19:18,619 INFO L87 Difference]: Start difference. First operand 369 states and 440 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) [2021-11-09 09:19:18,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:19:18,668 INFO L93 Difference]: Finished difference Result 369 states and 440 transitions. [2021-11-09 09:19:18,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-09 09:19:18,669 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 [2021-11-09 09:19:18,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:19:18,671 INFO L225 Difference]: With dead ends: 369 [2021-11-09 09:19:18,671 INFO L226 Difference]: Without dead ends: 368 [2021-11-09 09:19:18,671 INFO L786 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 [2021-11-09 09:19:18,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 368 states. [2021-11-09 09:19:18,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 368 to 368. [2021-11-09 09:19:18,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 368 states, 364 states have (on average 1.206043956043956) internal successors, (439), 367 states have internal predecessors, (439), 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) [2021-11-09 09:19:18,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 368 states to 368 states and 439 transitions. [2021-11-09 09:19:18,688 INFO L78 Accepts]: Start accepts. Automaton has 368 states and 439 transitions. Word has length 104 [2021-11-09 09:19:18,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:19:18,689 INFO L470 AbstractCegarLoop]: Abstraction has 368 states and 439 transitions. [2021-11-09 09:19:18,689 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) [2021-11-09 09:19:18,689 INFO L276 IsEmpty]: Start isEmpty. Operand 368 states and 439 transitions. [2021-11-09 09:19:18,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-11-09 09:19:18,690 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:19:18,691 INFO L513 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] [2021-11-09 09:19:18,731 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_648e299c-18c5-4bc3-a09c-86b2fa82e68f/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-11-09 09:19:18,911 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_648e299c-18c5-4bc3-a09c-86b2fa82e68f/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-11-09 09:19:18,912 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-09 09:19:18,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:19:18,912 INFO L85 PathProgramCache]: Analyzing trace with hash 1044746806, now seen corresponding path program 1 times [2021-11-09 09:19:18,912 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:19:18,913 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199856185] [2021-11-09 09:19:18,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:19:18,913 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:19:18,934 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 09:19:18,934 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1840450335] [2021-11-09 09:19:18,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:19:18,934 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:19:18,934 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_648e299c-18c5-4bc3-a09c-86b2fa82e68f/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:19:18,942 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_648e299c-18c5-4bc3-a09c-86b2fa82e68f/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 09:19:18,966 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_648e299c-18c5-4bc3-a09c-86b2fa82e68f/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-09 09:19:19,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:19:19,419 INFO L263 TraceCheckSpWp]: Trace formula consists of 308 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-09 09:19:19,422 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:19:19,787 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:19:19,787 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:19:19,788 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [199856185] [2021-11-09 09:19:19,788 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 09:19:19,789 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1840450335] [2021-11-09 09:19:19,789 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1840450335] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 09:19:19,789 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-09 09:19:19,789 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2021-11-09 09:19:19,790 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162183973] [2021-11-09 09:19:19,790 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-09 09:19:19,791 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:19:19,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-09 09:19:19,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-09 09:19:19,792 INFO L87 Difference]: Start difference. First operand 368 states and 439 transitions. Second operand has 5 states, 5 states have (on average 21.6) internal successors, (108), 5 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) [2021-11-09 09:19:19,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:19:19,881 INFO L93 Difference]: Finished difference Result 568 states and 680 transitions. [2021-11-09 09:19:19,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-09 09:19:19,881 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.6) internal successors, (108), 5 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 [2021-11-09 09:19:19,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:19:19,885 INFO L225 Difference]: With dead ends: 568 [2021-11-09 09:19:19,885 INFO L226 Difference]: Without dead ends: 539 [2021-11-09 09:19:19,886 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-09 09:19:19,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 539 states. [2021-11-09 09:19:19,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 539 to 370. [2021-11-09 09:19:19,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 370 states, 366 states have (on average 1.2049180327868851) internal successors, (441), 369 states have internal predecessors, (441), 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) [2021-11-09 09:19:19,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 370 states to 370 states and 441 transitions. [2021-11-09 09:19:19,903 INFO L78 Accepts]: Start accepts. Automaton has 370 states and 441 transitions. Word has length 108 [2021-11-09 09:19:19,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:19:19,904 INFO L470 AbstractCegarLoop]: Abstraction has 370 states and 441 transitions. [2021-11-09 09:19:19,904 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.6) internal successors, (108), 5 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) [2021-11-09 09:19:19,904 INFO L276 IsEmpty]: Start isEmpty. Operand 370 states and 441 transitions. [2021-11-09 09:19:19,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-11-09 09:19:19,906 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:19:19,906 INFO L513 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] [2021-11-09 09:19:19,937 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_648e299c-18c5-4bc3-a09c-86b2fa82e68f/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-11-09 09:19:20,128 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_648e299c-18c5-4bc3-a09c-86b2fa82e68f/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:19:20,129 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)] === [2021-11-09 09:19:20,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:19:20,129 INFO L85 PathProgramCache]: Analyzing trace with hash 1044059460, now seen corresponding path program 1 times [2021-11-09 09:19:20,129 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:19:20,129 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964497865] [2021-11-09 09:19:20,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:19:20,130 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:19:20,148 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 09:19:20,148 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [953596605] [2021-11-09 09:19:20,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:19:20,149 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:19:20,149 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_648e299c-18c5-4bc3-a09c-86b2fa82e68f/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:19:20,150 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_648e299c-18c5-4bc3-a09c-86b2fa82e68f/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 09:19:20,158 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_648e299c-18c5-4bc3-a09c-86b2fa82e68f/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-11-09 09:19:20,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:19:20,662 INFO L263 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-09 09:19:20,664 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:19:21,501 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:19:21,502 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:19:21,502 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964497865] [2021-11-09 09:19:21,502 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 09:19:21,502 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [953596605] [2021-11-09 09:19:21,503 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [953596605] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:19:21,503 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:19:21,503 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 09:19:21,503 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463076422] [2021-11-09 09:19:21,504 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 09:19:21,504 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:19:21,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 09:19:21,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 09:19:21,505 INFO L87 Difference]: Start difference. First operand 370 states and 441 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) [2021-11-09 09:19:21,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:19:21,560 INFO L93 Difference]: Finished difference Result 609 states and 733 transitions. [2021-11-09 09:19:21,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 09:19:21,561 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 [2021-11-09 09:19:21,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:19:21,564 INFO L225 Difference]: With dead ends: 609 [2021-11-09 09:19:21,564 INFO L226 Difference]: Without dead ends: 368 [2021-11-09 09:19:21,565 INFO L786 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 [2021-11-09 09:19:21,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 368 states. [2021-11-09 09:19:21,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 368 to 368. [2021-11-09 09:19:21,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 368 states, 364 states have (on average 1.2032967032967032) internal successors, (438), 367 states have internal predecessors, (438), 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) [2021-11-09 09:19:21,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 368 states to 368 states and 438 transitions. [2021-11-09 09:19:21,584 INFO L78 Accepts]: Start accepts. Automaton has 368 states and 438 transitions. Word has length 108 [2021-11-09 09:19:21,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:19:21,584 INFO L470 AbstractCegarLoop]: Abstraction has 368 states and 438 transitions. [2021-11-09 09:19:21,585 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) [2021-11-09 09:19:21,585 INFO L276 IsEmpty]: Start isEmpty. Operand 368 states and 438 transitions. [2021-11-09 09:19:21,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-11-09 09:19:21,587 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:19:21,587 INFO L513 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, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:19:21,629 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_648e299c-18c5-4bc3-a09c-86b2fa82e68f/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-11-09 09:19:21,803 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_648e299c-18c5-4bc3-a09c-86b2fa82e68f/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:19:21,804 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)] === [2021-11-09 09:19:21,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:19:21,804 INFO L85 PathProgramCache]: Analyzing trace with hash 910573572, now seen corresponding path program 1 times [2021-11-09 09:19:21,804 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:19:21,804 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056767263] [2021-11-09 09:19:21,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:19:21,805 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:19:21,824 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 09:19:21,825 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1104830699] [2021-11-09 09:19:21,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:19:21,825 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:19:21,825 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_648e299c-18c5-4bc3-a09c-86b2fa82e68f/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:19:21,826 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_648e299c-18c5-4bc3-a09c-86b2fa82e68f/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 09:19:21,850 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_648e299c-18c5-4bc3-a09c-86b2fa82e68f/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-11-09 09:19:22,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:19:22,427 INFO L263 TraceCheckSpWp]: Trace formula consists of 385 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-09 09:19:22,430 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:19:22,934 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:19:22,934 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:19:22,934 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056767263] [2021-11-09 09:19:22,934 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 09:19:22,934 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1104830699] [2021-11-09 09:19:22,935 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1104830699] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:19:22,935 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:19:22,935 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 09:19:22,935 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970787578] [2021-11-09 09:19:22,935 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 09:19:22,935 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:19:22,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 09:19:22,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 09:19:22,936 INFO L87 Difference]: Start difference. First operand 368 states and 438 transitions. Second operand has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 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) [2021-11-09 09:19:22,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:19:22,993 INFO L93 Difference]: Finished difference Result 685 states and 822 transitions. [2021-11-09 09:19:22,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 09:19:22,995 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 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 115 [2021-11-09 09:19:22,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:19:22,998 INFO L225 Difference]: With dead ends: 685 [2021-11-09 09:19:22,998 INFO L226 Difference]: Without dead ends: 366 [2021-11-09 09:19:22,999 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 09:19:23,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 366 states. [2021-11-09 09:19:23,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 366 to 366. [2021-11-09 09:19:23,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 366 states, 362 states have (on average 1.201657458563536) internal successors, (435), 365 states have internal predecessors, (435), 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) [2021-11-09 09:19:23,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 366 states to 366 states and 435 transitions. [2021-11-09 09:19:23,018 INFO L78 Accepts]: Start accepts. Automaton has 366 states and 435 transitions. Word has length 115 [2021-11-09 09:19:23,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:19:23,018 INFO L470 AbstractCegarLoop]: Abstraction has 366 states and 435 transitions. [2021-11-09 09:19:23,019 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 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) [2021-11-09 09:19:23,019 INFO L276 IsEmpty]: Start isEmpty. Operand 366 states and 435 transitions. [2021-11-09 09:19:23,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-11-09 09:19:23,021 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:19:23,021 INFO L513 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:19:23,072 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_648e299c-18c5-4bc3-a09c-86b2fa82e68f/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-11-09 09:19:23,235 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_648e299c-18c5-4bc3-a09c-86b2fa82e68f/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:19:23,236 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)] === [2021-11-09 09:19:23,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:19:23,236 INFO L85 PathProgramCache]: Analyzing trace with hash -1714117100, now seen corresponding path program 1 times [2021-11-09 09:19:23,236 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:19:23,236 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752642331] [2021-11-09 09:19:23,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:19:23,237 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:19:23,281 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 09:19:23,309 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1819084220] [2021-11-09 09:19:23,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:19:23,309 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:19:23,310 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_648e299c-18c5-4bc3-a09c-86b2fa82e68f/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:19:23,316 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_648e299c-18c5-4bc3-a09c-86b2fa82e68f/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 09:19:23,335 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_648e299c-18c5-4bc3-a09c-86b2fa82e68f/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-11-09 09:19:24,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:19:24,149 INFO L263 TraceCheckSpWp]: Trace formula consists of 469 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-09 09:19:24,153 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:19:24,467 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:19:24,468 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:19:24,468 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [752642331] [2021-11-09 09:19:24,468 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 09:19:24,468 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1819084220] [2021-11-09 09:19:24,468 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1819084220] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:19:24,468 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:19:24,468 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 09:19:24,469 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406806137] [2021-11-09 09:19:24,469 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 09:19:24,469 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:19:24,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 09:19:24,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 09:19:24,470 INFO L87 Difference]: Start difference. First operand 366 states and 435 transitions. Second operand has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 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) [2021-11-09 09:19:24,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:19:24,542 INFO L93 Difference]: Finished difference Result 690 states and 830 transitions. [2021-11-09 09:19:24,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 09:19:24,543 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 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 122 [2021-11-09 09:19:24,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:19:24,546 INFO L225 Difference]: With dead ends: 690 [2021-11-09 09:19:24,546 INFO L226 Difference]: Without dead ends: 370 [2021-11-09 09:19:24,547 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 09:19:24,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 370 states. [2021-11-09 09:19:24,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 370 to 370. [2021-11-09 09:19:24,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 370 states, 366 states have (on average 1.1994535519125684) internal successors, (439), 369 states have internal predecessors, (439), 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) [2021-11-09 09:19:24,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 370 states to 370 states and 439 transitions. [2021-11-09 09:19:24,568 INFO L78 Accepts]: Start accepts. Automaton has 370 states and 439 transitions. Word has length 122 [2021-11-09 09:19:24,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:19:24,568 INFO L470 AbstractCegarLoop]: Abstraction has 370 states and 439 transitions. [2021-11-09 09:19:24,569 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 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) [2021-11-09 09:19:24,569 INFO L276 IsEmpty]: Start isEmpty. Operand 370 states and 439 transitions. [2021-11-09 09:19:24,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-11-09 09:19:24,570 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:19:24,571 INFO L513 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:19:24,616 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_648e299c-18c5-4bc3-a09c-86b2fa82e68f/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-11-09 09:19:24,795 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_648e299c-18c5-4bc3-a09c-86b2fa82e68f/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-11-09 09:19:24,796 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-09 09:19:24,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:19:24,796 INFO L85 PathProgramCache]: Analyzing trace with hash 1614761700, now seen corresponding path program 1 times [2021-11-09 09:19:24,796 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:19:24,796 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877525200] [2021-11-09 09:19:24,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:19:24,797 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:19:24,818 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 09:19:24,818 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2013842033] [2021-11-09 09:19:24,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:19:24,819 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:19:24,819 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_648e299c-18c5-4bc3-a09c-86b2fa82e68f/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:19:24,820 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_648e299c-18c5-4bc3-a09c-86b2fa82e68f/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 09:19:24,833 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_648e299c-18c5-4bc3-a09c-86b2fa82e68f/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-11-09 09:19:25,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:19:25,855 INFO L263 TraceCheckSpWp]: Trace formula consists of 481 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-09 09:19:25,858 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:19:26,175 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-09 09:19:26,175 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:19:26,175 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877525200] [2021-11-09 09:19:26,175 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 09:19:26,175 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2013842033] [2021-11-09 09:19:26,176 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2013842033] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 09:19:26,176 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-09 09:19:26,176 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2021-11-09 09:19:26,176 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639432750] [2021-11-09 09:19:26,177 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-09 09:19:26,177 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:19:26,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-09 09:19:26,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-09 09:19:26,178 INFO L87 Difference]: Start difference. First operand 370 states and 439 transitions. Second operand has 4 states, 4 states have (on average 31.0) internal successors, (124), 4 states have internal predecessors, (124), 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) [2021-11-09 09:19:26,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:19:26,268 INFO L93 Difference]: Finished difference Result 697 states and 837 transitions. [2021-11-09 09:19:26,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-09 09:19:26,271 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), 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 124 [2021-11-09 09:19:26,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:19:26,274 INFO L225 Difference]: With dead ends: 697 [2021-11-09 09:19:26,275 INFO L226 Difference]: Without dead ends: 374 [2021-11-09 09:19:26,276 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-09 09:19:26,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 374 states. [2021-11-09 09:19:26,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 374 to 374. [2021-11-09 09:19:26,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 374 states, 370 states have (on average 1.1972972972972973) internal successors, (443), 373 states have internal predecessors, (443), 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) [2021-11-09 09:19:26,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 374 states to 374 states and 443 transitions. [2021-11-09 09:19:26,296 INFO L78 Accepts]: Start accepts. Automaton has 374 states and 443 transitions. Word has length 124 [2021-11-09 09:19:26,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:19:26,297 INFO L470 AbstractCegarLoop]: Abstraction has 374 states and 443 transitions. [2021-11-09 09:19:26,297 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), 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) [2021-11-09 09:19:26,298 INFO L276 IsEmpty]: Start isEmpty. Operand 374 states and 443 transitions. [2021-11-09 09:19:26,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2021-11-09 09:19:26,299 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:19:26,300 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:19:26,344 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_648e299c-18c5-4bc3-a09c-86b2fa82e68f/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-11-09 09:19:26,514 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_648e299c-18c5-4bc3-a09c-86b2fa82e68f/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-11-09 09:19:26,515 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-09 09:19:26,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:19:26,515 INFO L85 PathProgramCache]: Analyzing trace with hash -1116199212, now seen corresponding path program 2 times [2021-11-09 09:19:26,515 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:19:26,516 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1446998190] [2021-11-09 09:19:26,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:19:26,516 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:19:26,549 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 09:19:26,550 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1968940792] [2021-11-09 09:19:26,550 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-09 09:19:26,550 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:19:26,551 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_648e299c-18c5-4bc3-a09c-86b2fa82e68f/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:19:26,562 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_648e299c-18c5-4bc3-a09c-86b2fa82e68f/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 09:19:26,568 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_648e299c-18c5-4bc3-a09c-86b2fa82e68f/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-11-09 09:19:27,503 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-09 09:19:27,504 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 09:19:27,509 INFO L263 TraceCheckSpWp]: Trace formula consists of 493 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-09 09:19:27,513 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:19:27,895 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-09 09:19:27,896 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:19:27,896 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1446998190] [2021-11-09 09:19:27,896 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 09:19:27,897 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1968940792] [2021-11-09 09:19:27,897 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1968940792] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 09:19:27,897 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-09 09:19:27,897 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2021-11-09 09:19:27,898 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415025612] [2021-11-09 09:19:27,898 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-09 09:19:27,899 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:19:27,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-09 09:19:27,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-09 09:19:27,900 INFO L87 Difference]: Start difference. First operand 374 states and 443 transitions. Second operand has 5 states, 5 states have (on average 25.0) internal successors, (125), 5 states have internal predecessors, (125), 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) [2021-11-09 09:19:28,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:19:28,027 INFO L93 Difference]: Finished difference Result 704 states and 844 transitions. [2021-11-09 09:19:28,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-09 09:19:28,029 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 25.0) internal successors, (125), 5 states have internal predecessors, (125), 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 126 [2021-11-09 09:19:28,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:19:28,032 INFO L225 Difference]: With dead ends: 704 [2021-11-09 09:19:28,032 INFO L226 Difference]: Without dead ends: 378 [2021-11-09 09:19:28,033 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-09 09:19:28,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 378 states. [2021-11-09 09:19:28,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 378 to 378. [2021-11-09 09:19:28,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 378 states, 374 states have (on average 1.195187165775401) internal successors, (447), 377 states have internal predecessors, (447), 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) [2021-11-09 09:19:28,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 378 states to 378 states and 447 transitions. [2021-11-09 09:19:28,053 INFO L78 Accepts]: Start accepts. Automaton has 378 states and 447 transitions. Word has length 126 [2021-11-09 09:19:28,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:19:28,054 INFO L470 AbstractCegarLoop]: Abstraction has 378 states and 447 transitions. [2021-11-09 09:19:28,054 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 25.0) internal successors, (125), 5 states have internal predecessors, (125), 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) [2021-11-09 09:19:28,054 INFO L276 IsEmpty]: Start isEmpty. Operand 378 states and 447 transitions. [2021-11-09 09:19:28,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2021-11-09 09:19:28,056 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:19:28,057 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 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] [2021-11-09 09:19:28,112 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_648e299c-18c5-4bc3-a09c-86b2fa82e68f/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-11-09 09:19:28,276 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_648e299c-18c5-4bc3-a09c-86b2fa82e68f/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-11-09 09:19:28,276 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-09 09:19:28,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:19:28,276 INFO L85 PathProgramCache]: Analyzing trace with hash 61473700, now seen corresponding path program 3 times [2021-11-09 09:19:28,277 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:19:28,277 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838440339] [2021-11-09 09:19:28,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:19:28,277 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:19:28,324 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 09:19:28,339 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [183110192] [2021-11-09 09:19:28,339 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-09 09:19:28,340 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:19:28,340 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_648e299c-18c5-4bc3-a09c-86b2fa82e68f/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:19:28,342 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_648e299c-18c5-4bc3-a09c-86b2fa82e68f/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 09:19:28,353 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_648e299c-18c5-4bc3-a09c-86b2fa82e68f/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-11-09 09:19:29,181 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-09 09:19:29,182 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 09:19:29,186 INFO L263 TraceCheckSpWp]: Trace formula consists of 469 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-09 09:19:29,190 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:19:29,504 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-09 09:19:29,505 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:19:29,505 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838440339] [2021-11-09 09:19:29,505 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 09:19:29,505 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [183110192] [2021-11-09 09:19:29,506 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [183110192] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:19:29,506 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:19:29,506 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 09:19:29,506 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499076053] [2021-11-09 09:19:29,507 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 09:19:29,507 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:19:29,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 09:19:29,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 09:19:29,508 INFO L87 Difference]: Start difference. First operand 378 states and 447 transitions. Second operand has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 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) [2021-11-09 09:19:29,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:19:29,580 INFO L93 Difference]: Finished difference Result 717 states and 858 transitions. [2021-11-09 09:19:29,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 09:19:29,581 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 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 128 [2021-11-09 09:19:29,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:19:29,584 INFO L225 Difference]: With dead ends: 717 [2021-11-09 09:19:29,584 INFO L226 Difference]: Without dead ends: 382 [2021-11-09 09:19:29,585 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 09:19:29,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 382 states. [2021-11-09 09:19:29,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 382 to 382. [2021-11-09 09:19:29,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 382 states, 378 states have (on average 1.193121693121693) internal successors, (451), 381 states have internal predecessors, (451), 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) [2021-11-09 09:19:29,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 451 transitions. [2021-11-09 09:19:29,607 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 451 transitions. Word has length 128 [2021-11-09 09:19:29,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:19:29,607 INFO L470 AbstractCegarLoop]: Abstraction has 382 states and 451 transitions. [2021-11-09 09:19:29,607 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 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) [2021-11-09 09:19:29,608 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 451 transitions. [2021-11-09 09:19:29,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-11-09 09:19:29,609 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:19:29,609 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 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] [2021-11-09 09:19:29,660 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_648e299c-18c5-4bc3-a09c-86b2fa82e68f/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2021-11-09 09:19:29,831 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_648e299c-18c5-4bc3-a09c-86b2fa82e68f/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-11-09 09:19:29,832 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-09 09:19:29,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:19:29,832 INFO L85 PathProgramCache]: Analyzing trace with hash -536744938, now seen corresponding path program 1 times [2021-11-09 09:19:29,832 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:19:29,833 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1724563256] [2021-11-09 09:19:29,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:19:29,833 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:19:29,865 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 09:19:29,865 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [907804895] [2021-11-09 09:19:29,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:19:29,866 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:19:29,866 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_648e299c-18c5-4bc3-a09c-86b2fa82e68f/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:19:29,867 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_648e299c-18c5-4bc3-a09c-86b2fa82e68f/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 09:19:29,895 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_648e299c-18c5-4bc3-a09c-86b2fa82e68f/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-11-09 09:19:31,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:19:31,142 INFO L263 TraceCheckSpWp]: Trace formula consists of 517 conjuncts, 14 conjunts are in the unsatisfiable core [2021-11-09 09:19:31,147 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:19:31,531 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-09 09:19:31,532 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:19:31,532 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1724563256] [2021-11-09 09:19:31,532 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 09:19:31,532 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [907804895] [2021-11-09 09:19:31,532 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [907804895] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 09:19:31,532 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-09 09:19:31,533 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2021-11-09 09:19:31,533 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739280180] [2021-11-09 09:19:31,533 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-09 09:19:31,533 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:19:31,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-09 09:19:31,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-09 09:19:31,534 INFO L87 Difference]: Start difference. First operand 382 states and 451 transitions. Second operand has 4 states, 4 states have (on average 31.5) internal successors, (126), 4 states have internal predecessors, (126), 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) [2021-11-09 09:19:31,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:19:31,647 INFO L93 Difference]: Finished difference Result 724 states and 865 transitions. [2021-11-09 09:19:31,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-09 09:19:31,648 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 31.5) internal successors, (126), 4 states have internal predecessors, (126), 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 130 [2021-11-09 09:19:31,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:19:31,651 INFO L225 Difference]: With dead ends: 724 [2021-11-09 09:19:31,652 INFO L226 Difference]: Without dead ends: 386 [2021-11-09 09:19:31,653 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-09 09:19:31,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 386 states. [2021-11-09 09:19:31,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 386 to 386. [2021-11-09 09:19:31,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 386 states, 382 states have (on average 1.1910994764397906) internal successors, (455), 385 states have internal predecessors, (455), 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) [2021-11-09 09:19:31,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 455 transitions. [2021-11-09 09:19:31,676 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 455 transitions. Word has length 130 [2021-11-09 09:19:31,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:19:31,677 INFO L470 AbstractCegarLoop]: Abstraction has 386 states and 455 transitions. [2021-11-09 09:19:31,677 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.5) internal successors, (126), 4 states have internal predecessors, (126), 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) [2021-11-09 09:19:31,677 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 455 transitions. [2021-11-09 09:19:31,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2021-11-09 09:19:31,679 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:19:31,679 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 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, 1, 1, 1, 1, 1] [2021-11-09 09:19:31,729 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_648e299c-18c5-4bc3-a09c-86b2fa82e68f/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2021-11-09 09:19:31,898 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_648e299c-18c5-4bc3-a09c-86b2fa82e68f/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:19:31,899 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-09 09:19:31,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:19:31,899 INFO L85 PathProgramCache]: Analyzing trace with hash -796605340, now seen corresponding path program 2 times [2021-11-09 09:19:31,900 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:19:31,900 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549731741] [2021-11-09 09:19:31,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:19:31,900 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:19:31,941 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 09:19:31,942 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [798522083] [2021-11-09 09:19:31,942 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-09 09:19:31,942 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:19:31,943 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_648e299c-18c5-4bc3-a09c-86b2fa82e68f/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:19:31,944 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_648e299c-18c5-4bc3-a09c-86b2fa82e68f/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 09:19:31,965 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_648e299c-18c5-4bc3-a09c-86b2fa82e68f/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-11-09 09:19:33,268 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-09 09:19:33,269 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 09:19:33,277 INFO L263 TraceCheckSpWp]: Trace formula consists of 529 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-09 09:19:33,281 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:19:33,649 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-09 09:19:33,649 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:19:33,650 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549731741] [2021-11-09 09:19:33,650 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 09:19:33,650 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [798522083] [2021-11-09 09:19:33,650 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [798522083] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 09:19:33,650 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-09 09:19:33,650 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2021-11-09 09:19:33,651 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164647019] [2021-11-09 09:19:33,651 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-09 09:19:33,652 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:19:33,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-09 09:19:33,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-09 09:19:33,653 INFO L87 Difference]: Start difference. First operand 386 states and 455 transitions. Second operand has 5 states, 5 states have (on average 25.4) internal successors, (127), 5 states have internal predecessors, (127), 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) [2021-11-09 09:19:33,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:19:33,793 INFO L93 Difference]: Finished difference Result 731 states and 872 transitions. [2021-11-09 09:19:33,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-09 09:19:33,794 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 25.4) internal successors, (127), 5 states have internal predecessors, (127), 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 132 [2021-11-09 09:19:33,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:19:33,797 INFO L225 Difference]: With dead ends: 731 [2021-11-09 09:19:33,797 INFO L226 Difference]: Without dead ends: 390 [2021-11-09 09:19:33,798 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-09 09:19:33,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 390 states. [2021-11-09 09:19:33,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 390 to 390. [2021-11-09 09:19:33,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 390 states, 386 states have (on average 1.189119170984456) internal successors, (459), 389 states have internal predecessors, (459), 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) [2021-11-09 09:19:33,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 390 states to 390 states and 459 transitions. [2021-11-09 09:19:33,822 INFO L78 Accepts]: Start accepts. Automaton has 390 states and 459 transitions. Word has length 132 [2021-11-09 09:19:33,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:19:33,822 INFO L470 AbstractCegarLoop]: Abstraction has 390 states and 459 transitions. [2021-11-09 09:19:33,823 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 25.4) internal successors, (127), 5 states have internal predecessors, (127), 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) [2021-11-09 09:19:33,823 INFO L276 IsEmpty]: Start isEmpty. Operand 390 states and 459 transitions. [2021-11-09 09:19:33,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-11-09 09:19:33,824 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:19:33,824 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2021-11-09 09:19:33,884 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_648e299c-18c5-4bc3-a09c-86b2fa82e68f/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2021-11-09 09:19:34,051 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_648e299c-18c5-4bc3-a09c-86b2fa82e68f/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:19:34,052 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-09 09:19:34,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:19:34,052 INFO L85 PathProgramCache]: Analyzing trace with hash 832047190, now seen corresponding path program 3 times [2021-11-09 09:19:34,052 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:19:34,053 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1038279023] [2021-11-09 09:19:34,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:19:34,053 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:19:34,112 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 09:19:34,114 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [953541866] [2021-11-09 09:19:34,114 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-09 09:19:34,115 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:19:34,115 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_648e299c-18c5-4bc3-a09c-86b2fa82e68f/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:19:34,117 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_648e299c-18c5-4bc3-a09c-86b2fa82e68f/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 09:19:34,143 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_648e299c-18c5-4bc3-a09c-86b2fa82e68f/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2021-11-09 09:19:35,582 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-09 09:19:35,583 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 09:19:35,588 INFO L263 TraceCheckSpWp]: Trace formula consists of 469 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-09 09:19:35,592 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:19:36,076 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-09 09:19:36,076 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:19:36,076 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1038279023] [2021-11-09 09:19:36,077 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 09:19:36,077 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [953541866] [2021-11-09 09:19:36,077 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [953541866] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 09:19:36,077 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-09 09:19:36,078 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2021-11-09 09:19:36,078 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371268607] [2021-11-09 09:19:36,079 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-09 09:19:36,079 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:19:36,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-09 09:19:36,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-09 09:19:36,080 INFO L87 Difference]: Start difference. First operand 390 states and 459 transitions. Second operand has 5 states, 4 states have (on average 31.5) internal successors, (126), 5 states have internal predecessors, (126), 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) [2021-11-09 09:19:36,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:19:36,176 INFO L93 Difference]: Finished difference Result 571 states and 670 transitions. [2021-11-09 09:19:36,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-09 09:19:36,177 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 31.5) internal successors, (126), 5 states have internal predecessors, (126), 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 134 [2021-11-09 09:19:36,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:19:36,182 INFO L225 Difference]: With dead ends: 571 [2021-11-09 09:19:36,182 INFO L226 Difference]: Without dead ends: 570 [2021-11-09 09:19:36,183 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-09 09:19:36,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 570 states. [2021-11-09 09:19:36,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 570 to 393. [2021-11-09 09:19:36,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 393 states, 389 states have (on average 1.1876606683804627) internal successors, (462), 392 states have internal predecessors, (462), 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) [2021-11-09 09:19:36,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 462 transitions. [2021-11-09 09:19:36,229 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 462 transitions. Word has length 134 [2021-11-09 09:19:36,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:19:36,230 INFO L470 AbstractCegarLoop]: Abstraction has 393 states and 462 transitions. [2021-11-09 09:19:36,230 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 31.5) internal successors, (126), 5 states have internal predecessors, (126), 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) [2021-11-09 09:19:36,230 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 462 transitions. [2021-11-09 09:19:36,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2021-11-09 09:19:36,232 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:19:36,233 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:19:36,276 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_648e299c-18c5-4bc3-a09c-86b2fa82e68f/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2021-11-09 09:19:36,455 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_648e299c-18c5-4bc3-a09c-86b2fa82e68f/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:19:36,456 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-09 09:19:36,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:19:36,456 INFO L85 PathProgramCache]: Analyzing trace with hash 1843496495, now seen corresponding path program 1 times [2021-11-09 09:19:36,456 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:19:36,456 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282620898] [2021-11-09 09:19:36,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:19:36,457 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:19:36,486 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 09:19:36,486 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [899846877] [2021-11-09 09:19:36,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:19:36,487 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:19:36,487 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_648e299c-18c5-4bc3-a09c-86b2fa82e68f/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:19:36,494 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_648e299c-18c5-4bc3-a09c-86b2fa82e68f/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 09:19:36,501 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_648e299c-18c5-4bc3-a09c-86b2fa82e68f/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2021-11-09 09:19:37,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:19:37,542 INFO L263 TraceCheckSpWp]: Trace formula consists of 774 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-09 09:19:37,548 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:19:38,491 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 0 proven. 97 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-09 09:19:38,491 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:19:38,491 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282620898] [2021-11-09 09:19:38,492 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 09:19:38,492 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [899846877] [2021-11-09 09:19:38,492 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [899846877] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 09:19:38,492 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-09 09:19:38,493 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2021-11-09 09:19:38,493 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986515792] [2021-11-09 09:19:38,499 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-09 09:19:38,500 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:19:38,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-09 09:19:38,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-09 09:19:38,501 INFO L87 Difference]: Start difference. First operand 393 states and 462 transitions. Second operand has 6 states, 5 states have (on average 44.6) internal successors, (223), 6 states have internal predecessors, (223), 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) [2021-11-09 09:19:38,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:19:38,607 INFO L93 Difference]: Finished difference Result 570 states and 669 transitions. [2021-11-09 09:19:38,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-09 09:19:38,608 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 44.6) internal successors, (223), 6 states have internal predecessors, (223), 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 231 [2021-11-09 09:19:38,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:19:38,613 INFO L225 Difference]: With dead ends: 570 [2021-11-09 09:19:38,613 INFO L226 Difference]: Without dead ends: 569 [2021-11-09 09:19:38,617 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 226 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-09 09:19:38,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 569 states. [2021-11-09 09:19:38,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 569 to 568. [2021-11-09 09:19:38,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 568 states, 564 states have (on average 1.1826241134751774) internal successors, (667), 567 states have internal predecessors, (667), 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) [2021-11-09 09:19:38,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 568 states to 568 states and 667 transitions. [2021-11-09 09:19:38,654 INFO L78 Accepts]: Start accepts. Automaton has 568 states and 667 transitions. Word has length 231 [2021-11-09 09:19:38,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:19:38,655 INFO L470 AbstractCegarLoop]: Abstraction has 568 states and 667 transitions. [2021-11-09 09:19:38,656 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 44.6) internal successors, (223), 6 states have internal predecessors, (223), 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) [2021-11-09 09:19:38,656 INFO L276 IsEmpty]: Start isEmpty. Operand 568 states and 667 transitions. [2021-11-09 09:19:38,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2021-11-09 09:19:38,658 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:19:38,659 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:19:38,707 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_648e299c-18c5-4bc3-a09c-86b2fa82e68f/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2021-11-09 09:19:38,879 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_648e299c-18c5-4bc3-a09c-86b2fa82e68f/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:19:38,879 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)] === [2021-11-09 09:19:38,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:19:38,880 INFO L85 PathProgramCache]: Analyzing trace with hash 1008347235, now seen corresponding path program 1 times [2021-11-09 09:19:38,880 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:19:38,880 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131098447] [2021-11-09 09:19:38,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:19:38,880 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:19:38,936 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 09:19:38,937 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [981436810] [2021-11-09 09:19:38,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:19:38,937 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:19:38,938 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_648e299c-18c5-4bc3-a09c-86b2fa82e68f/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:19:38,939 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_648e299c-18c5-4bc3-a09c-86b2fa82e68f/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 09:19:38,945 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_648e299c-18c5-4bc3-a09c-86b2fa82e68f/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2021-11-09 09:19:40,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:19:40,146 INFO L263 TraceCheckSpWp]: Trace formula consists of 798 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-09 09:19:40,153 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:19:41,044 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-09 09:19:41,045 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:19:41,045 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [131098447] [2021-11-09 09:19:41,045 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 09:19:41,045 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [981436810] [2021-11-09 09:19:41,046 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [981436810] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 09:19:41,046 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-09 09:19:41,046 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-11-09 09:19:41,046 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812516498] [2021-11-09 09:19:41,047 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-09 09:19:41,048 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:19:41,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-09 09:19:41,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-09 09:19:41,049 INFO L87 Difference]: Start difference. First operand 568 states and 667 transitions. Second operand has 7 states, 7 states have (on average 32.57142857142857) internal successors, (228), 7 states have internal predecessors, (228), 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) [2021-11-09 09:19:41,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:19:41,171 INFO L93 Difference]: Finished difference Result 780 states and 920 transitions. [2021-11-09 09:19:41,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-09 09:19:41,175 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 32.57142857142857) internal successors, (228), 7 states have internal predecessors, (228), 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 236 [2021-11-09 09:19:41,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:19:41,181 INFO L225 Difference]: With dead ends: 780 [2021-11-09 09:19:41,181 INFO L226 Difference]: Without dead ends: 751 [2021-11-09 09:19:41,182 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 230 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-11-09 09:19:41,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 751 states. [2021-11-09 09:19:41,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 751 to 570. [2021-11-09 09:19:41,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 570 states, 566 states have (on average 1.1819787985865724) internal successors, (669), 569 states have internal predecessors, (669), 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) [2021-11-09 09:19:41,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 570 states to 570 states and 669 transitions. [2021-11-09 09:19:41,217 INFO L78 Accepts]: Start accepts. Automaton has 570 states and 669 transitions. Word has length 236 [2021-11-09 09:19:41,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:19:41,218 INFO L470 AbstractCegarLoop]: Abstraction has 570 states and 669 transitions. [2021-11-09 09:19:41,218 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 32.57142857142857) internal successors, (228), 7 states have internal predecessors, (228), 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) [2021-11-09 09:19:41,219 INFO L276 IsEmpty]: Start isEmpty. Operand 570 states and 669 transitions. [2021-11-09 09:19:41,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2021-11-09 09:19:41,221 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:19:41,221 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:19:41,275 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_648e299c-18c5-4bc3-a09c-86b2fa82e68f/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2021-11-09 09:19:41,434 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_648e299c-18c5-4bc3-a09c-86b2fa82e68f/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2021-11-09 09:19:41,434 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-09 09:19:41,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:19:41,435 INFO L85 PathProgramCache]: Analyzing trace with hash 1007659889, now seen corresponding path program 1 times [2021-11-09 09:19:41,435 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:19:41,435 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551384502] [2021-11-09 09:19:41,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:19:41,436 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:19:41,460 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 09:19:41,460 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1604501862] [2021-11-09 09:19:41,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:19:41,461 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:19:41,461 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_648e299c-18c5-4bc3-a09c-86b2fa82e68f/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:19:41,462 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_648e299c-18c5-4bc3-a09c-86b2fa82e68f/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 09:19:41,463 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_648e299c-18c5-4bc3-a09c-86b2fa82e68f/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2021-11-09 09:19:48,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:19:48,686 INFO L263 TraceCheckSpWp]: Trace formula consists of 791 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-09 09:19:48,692 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:19:49,317 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 42 proven. 6 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2021-11-09 09:19:49,317 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:19:49,318 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551384502] [2021-11-09 09:19:49,318 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 09:19:49,318 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1604501862] [2021-11-09 09:19:49,318 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1604501862] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 09:19:49,318 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-09 09:19:49,318 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2021-11-09 09:19:49,319 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030610012] [2021-11-09 09:19:49,319 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-09 09:19:49,320 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:19:49,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-09 09:19:49,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-09 09:19:49,321 INFO L87 Difference]: Start difference. First operand 570 states and 669 transitions. Second operand has 6 states, 6 states have (on average 28.0) internal successors, (168), 6 states have internal predecessors, (168), 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) [2021-11-09 09:19:49,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:19:49,515 INFO L93 Difference]: Finished difference Result 1100 states and 1303 transitions. [2021-11-09 09:19:49,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-09 09:19:49,516 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 28.0) internal successors, (168), 6 states have internal predecessors, (168), 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 236 [2021-11-09 09:19:49,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:19:49,520 INFO L225 Difference]: With dead ends: 1100 [2021-11-09 09:19:49,521 INFO L226 Difference]: Without dead ends: 576 [2021-11-09 09:19:49,523 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 231 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-09 09:19:49,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 576 states. [2021-11-09 09:19:49,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 576 to 576. [2021-11-09 09:19:49,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 576 states, 572 states have (on average 1.18006993006993) internal successors, (675), 575 states have internal predecessors, (675), 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) [2021-11-09 09:19:49,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 576 states to 576 states and 675 transitions. [2021-11-09 09:19:49,557 INFO L78 Accepts]: Start accepts. Automaton has 576 states and 675 transitions. Word has length 236 [2021-11-09 09:19:49,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:19:49,558 INFO L470 AbstractCegarLoop]: Abstraction has 576 states and 675 transitions. [2021-11-09 09:19:49,558 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 28.0) internal successors, (168), 6 states have internal predecessors, (168), 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) [2021-11-09 09:19:49,559 INFO L276 IsEmpty]: Start isEmpty. Operand 576 states and 675 transitions. [2021-11-09 09:19:49,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2021-11-09 09:19:49,561 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:19:49,561 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:19:49,636 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_648e299c-18c5-4bc3-a09c-86b2fa82e68f/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2021-11-09 09:19:49,762 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_648e299c-18c5-4bc3-a09c-86b2fa82e68f/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2021-11-09 09:19:49,762 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-09 09:19:49,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:19:49,763 INFO L85 PathProgramCache]: Analyzing trace with hash 194108863, now seen corresponding path program 2 times [2021-11-09 09:19:49,763 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:19:49,763 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192585856] [2021-11-09 09:19:49,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:19:49,763 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:19:49,787 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 09:19:49,787 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [64117936] [2021-11-09 09:19:49,787 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-09 09:19:49,788 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:19:49,788 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_648e299c-18c5-4bc3-a09c-86b2fa82e68f/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:19:49,789 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_648e299c-18c5-4bc3-a09c-86b2fa82e68f/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 09:19:49,790 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_648e299c-18c5-4bc3-a09c-86b2fa82e68f/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2021-11-09 09:19:52,554 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-09 09:19:52,554 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 09:19:52,569 INFO L263 TraceCheckSpWp]: Trace formula consists of 803 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-09 09:19:52,574 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:19:53,385 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 42 proven. 10 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2021-11-09 09:19:53,385 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:19:53,387 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [192585856] [2021-11-09 09:19:53,387 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 09:19:53,387 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [64117936] [2021-11-09 09:19:53,387 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [64117936] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 09:19:53,387 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-09 09:19:53,388 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-11-09 09:19:53,388 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056035649] [2021-11-09 09:19:53,388 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-09 09:19:53,388 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:19:53,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-09 09:19:53,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-09 09:19:53,389 INFO L87 Difference]: Start difference. First operand 576 states and 675 transitions. Second operand has 8 states, 8 states have (on average 21.125) internal successors, (169), 8 states have internal predecessors, (169), 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) [2021-11-09 09:19:53,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:19:53,719 INFO L93 Difference]: Finished difference Result 1111 states and 1314 transitions. [2021-11-09 09:19:53,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-09 09:19:53,720 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 21.125) internal successors, (169), 8 states have internal predecessors, (169), 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 238 [2021-11-09 09:19:53,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:19:53,724 INFO L225 Difference]: With dead ends: 1111 [2021-11-09 09:19:53,724 INFO L226 Difference]: Without dead ends: 582 [2021-11-09 09:19:53,726 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 231 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2021-11-09 09:19:53,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 582 states. [2021-11-09 09:19:53,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 582 to 582. [2021-11-09 09:19:53,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 582 states, 578 states have (on average 1.1782006920415224) internal successors, (681), 581 states have internal predecessors, (681), 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) [2021-11-09 09:19:53,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 582 states to 582 states and 681 transitions. [2021-11-09 09:19:53,762 INFO L78 Accepts]: Start accepts. Automaton has 582 states and 681 transitions. Word has length 238 [2021-11-09 09:19:53,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:19:53,763 INFO L470 AbstractCegarLoop]: Abstraction has 582 states and 681 transitions. [2021-11-09 09:19:53,763 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 21.125) internal successors, (169), 8 states have internal predecessors, (169), 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) [2021-11-09 09:19:53,764 INFO L276 IsEmpty]: Start isEmpty. Operand 582 states and 681 transitions. [2021-11-09 09:19:53,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2021-11-09 09:19:53,788 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:19:53,789 INFO L513 BasicCegarLoop]: trace histogram [5, 5, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:19:53,841 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_648e299c-18c5-4bc3-a09c-86b2fa82e68f/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2021-11-09 09:19:53,989 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_648e299c-18c5-4bc3-a09c-86b2fa82e68f/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2021-11-09 09:19:53,989 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-09 09:19:53,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:19:53,990 INFO L85 PathProgramCache]: Analyzing trace with hash 1971185585, now seen corresponding path program 3 times [2021-11-09 09:19:53,990 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:19:53,991 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051521322] [2021-11-09 09:19:53,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:19:53,991 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:19:54,033 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 09:19:54,033 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [628678786] [2021-11-09 09:19:54,033 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-09 09:19:54,034 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:19:54,034 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_648e299c-18c5-4bc3-a09c-86b2fa82e68f/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:19:54,035 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_648e299c-18c5-4bc3-a09c-86b2fa82e68f/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 09:19:54,043 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_648e299c-18c5-4bc3-a09c-86b2fa82e68f/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process