./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test4-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 63182f13 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16c2a965-cc25-4b34-9ab1-44d2da4aa583/bin/uautomizer-YU5uOKAj3y/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16c2a965-cc25-4b34-9ab1-44d2da4aa583/bin/uautomizer-YU5uOKAj3y/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16c2a965-cc25-4b34-9ab1-44d2da4aa583/bin/uautomizer-YU5uOKAj3y/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16c2a965-cc25-4b34-9ab1-44d2da4aa583/bin/uautomizer-YU5uOKAj3y/config/AutomizerReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test4-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16c2a965-cc25-4b34-9ab1-44d2da4aa583/bin/uautomizer-YU5uOKAj3y/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16c2a965-cc25-4b34-9ab1-44d2da4aa583/bin/uautomizer-YU5uOKAj3y --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 765142a1ef820c0c2cf2fa98a3978a1412f5a1196c629c20848264001100dcc9 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-13 17:45:18,729 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-13 17:45:18,732 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-13 17:45:18,774 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-13 17:45:18,779 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-13 17:45:18,782 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-13 17:45:18,788 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-13 17:45:18,794 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-13 17:45:18,799 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-13 17:45:18,801 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-13 17:45:18,803 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-13 17:45:18,807 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-13 17:45:18,808 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-13 17:45:18,818 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-13 17:45:18,820 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-13 17:45:18,823 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-13 17:45:18,826 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-13 17:45:18,830 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-13 17:45:18,837 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-13 17:45:18,841 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-13 17:45:18,850 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-13 17:45:18,852 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-13 17:45:18,856 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-13 17:45:18,859 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-13 17:45:18,867 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-13 17:45:18,868 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-13 17:45:18,869 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-13 17:45:18,872 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-13 17:45:18,873 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-13 17:45:18,875 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-13 17:45:18,876 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-13 17:45:18,878 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-13 17:45:18,881 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-13 17:45:18,882 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-13 17:45:18,885 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-13 17:45:18,885 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-13 17:45:18,887 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-13 17:45:18,887 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-13 17:45:18,887 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-13 17:45:18,889 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-13 17:45:18,890 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-13 17:45:18,891 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16c2a965-cc25-4b34-9ab1-44d2da4aa583/bin/uautomizer-YU5uOKAj3y/config/svcomp-Overflow-32bit-Automizer_Default.epf [2021-11-13 17:45:18,961 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-13 17:45:18,961 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-13 17:45:18,962 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-13 17:45:18,963 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-13 17:45:18,964 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-13 17:45:18,965 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-13 17:45:18,966 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-13 17:45:18,966 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-13 17:45:18,966 INFO L138 SettingsManager]: * Use SBE=true [2021-11-13 17:45:18,967 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-13 17:45:18,968 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-13 17:45:18,969 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-13 17:45:18,969 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-13 17:45:18,969 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-13 17:45:18,970 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-13 17:45:18,970 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-13 17:45:18,970 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-13 17:45:18,971 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-13 17:45:18,971 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-11-13 17:45:18,971 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-13 17:45:18,971 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-13 17:45:18,972 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-13 17:45:18,972 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-13 17:45:18,972 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-13 17:45:18,973 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-13 17:45:18,973 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-13 17:45:18,973 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 17:45:18,974 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-13 17:45:18,974 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-13 17:45:18,974 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-13 17:45:18,975 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-13 17:45:18,975 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-13 17:45:18,975 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-13 17:45:18,976 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-13 17:45:18,976 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_16c2a965-cc25-4b34-9ab1-44d2da4aa583/bin/uautomizer-YU5uOKAj3y/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16c2a965-cc25-4b34-9ab1-44d2da4aa583/bin/uautomizer-YU5uOKAj3y Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 765142a1ef820c0c2cf2fa98a3978a1412f5a1196c629c20848264001100dcc9 [2021-11-13 17:45:19,386 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-13 17:45:19,428 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-13 17:45:19,432 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-13 17:45:19,434 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-13 17:45:19,435 INFO L275 PluginConnector]: CDTParser initialized [2021-11-13 17:45:19,437 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16c2a965-cc25-4b34-9ab1-44d2da4aa583/bin/uautomizer-YU5uOKAj3y/../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test4-1.i [2021-11-13 17:45:19,541 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16c2a965-cc25-4b34-9ab1-44d2da4aa583/bin/uautomizer-YU5uOKAj3y/data/eb124c2d9/0287f53e36e94ef0bc6a28c964a3303c/FLAGeaa8e8f1e [2021-11-13 17:45:20,525 INFO L306 CDTParser]: Found 1 translation units. [2021-11-13 17:45:20,526 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16c2a965-cc25-4b34-9ab1-44d2da4aa583/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test4-1.i [2021-11-13 17:45:20,553 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16c2a965-cc25-4b34-9ab1-44d2da4aa583/bin/uautomizer-YU5uOKAj3y/data/eb124c2d9/0287f53e36e94ef0bc6a28c964a3303c/FLAGeaa8e8f1e [2021-11-13 17:45:20,647 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16c2a965-cc25-4b34-9ab1-44d2da4aa583/bin/uautomizer-YU5uOKAj3y/data/eb124c2d9/0287f53e36e94ef0bc6a28c964a3303c [2021-11-13 17:45:20,650 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-13 17:45:20,654 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-13 17:45:20,657 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-13 17:45:20,657 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-13 17:45:20,662 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-13 17:45:20,664 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 05:45:20" (1/1) ... [2021-11-13 17:45:20,666 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63b8c865 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:45:20, skipping insertion in model container [2021-11-13 17:45:20,666 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 05:45:20" (1/1) ... [2021-11-13 17:45:20,678 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-13 17:45:20,793 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 17:45:21,434 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_16c2a965-cc25-4b34-9ab1-44d2da4aa583/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test4-1.i[33021,33034] [2021-11-13 17:45:21,672 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 17:45:21,684 INFO L203 MainTranslator]: Completed pre-run [2021-11-13 17:45:21,740 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_16c2a965-cc25-4b34-9ab1-44d2da4aa583/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test4-1.i[33021,33034] [2021-11-13 17:45:21,912 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 17:45:21,988 INFO L208 MainTranslator]: Completed translation [2021-11-13 17:45:21,988 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:45:21 WrapperNode [2021-11-13 17:45:21,989 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-13 17:45:21,990 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-13 17:45:21,991 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-13 17:45:21,991 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-13 17:45:22,002 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:45:21" (1/1) ... [2021-11-13 17:45:22,052 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:45:21" (1/1) ... [2021-11-13 17:45:22,178 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-13 17:45:22,195 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-13 17:45:22,196 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-13 17:45:22,196 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-13 17:45:22,208 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:45:21" (1/1) ... [2021-11-13 17:45:22,209 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:45:21" (1/1) ... [2021-11-13 17:45:22,243 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:45:21" (1/1) ... [2021-11-13 17:45:22,243 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:45:21" (1/1) ... [2021-11-13 17:45:22,382 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:45:21" (1/1) ... [2021-11-13 17:45:22,417 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:45:21" (1/1) ... [2021-11-13 17:45:22,441 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:45:21" (1/1) ... [2021-11-13 17:45:22,458 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-13 17:45:22,460 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-13 17:45:22,460 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-13 17:45:22,460 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-13 17:45:22,462 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:45:21" (1/1) ... [2021-11-13 17:45:22,475 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 17:45:22,492 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16c2a965-cc25-4b34-9ab1-44d2da4aa583/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 17:45:22,517 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16c2a965-cc25-4b34-9ab1-44d2da4aa583/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-13 17:45:22,539 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16c2a965-cc25-4b34-9ab1-44d2da4aa583/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-13 17:45:22,586 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-13 17:45:22,586 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-13 17:45:22,587 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-13 17:45:22,587 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-13 17:45:22,587 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-13 17:45:22,587 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-13 17:45:22,588 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-13 17:45:22,588 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-13 17:45:22,588 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-13 17:45:22,588 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-13 17:45:22,589 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-13 17:45:22,590 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-13 17:45:22,590 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-13 17:45:22,590 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-13 17:45:25,931 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-13 17:45:25,932 INFO L299 CfgBuilder]: Removed 60 assume(true) statements. [2021-11-13 17:45:25,939 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 05:45:25 BoogieIcfgContainer [2021-11-13 17:45:25,939 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-13 17:45:25,942 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-13 17:45:25,942 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-13 17:45:25,947 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-13 17:45:25,947 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 05:45:20" (1/3) ... [2021-11-13 17:45:25,948 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7065e72f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 05:45:25, skipping insertion in model container [2021-11-13 17:45:25,949 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:45:21" (2/3) ... [2021-11-13 17:45:25,949 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7065e72f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 05:45:25, skipping insertion in model container [2021-11-13 17:45:25,949 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 05:45:25" (3/3) ... [2021-11-13 17:45:25,954 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_OAT_test4-1.i [2021-11-13 17:45:25,963 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-13 17:45:25,963 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-11-13 17:45:26,074 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-13 17:45:26,085 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 [2021-11-13 17:45:26,086 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-11-13 17:45:26,124 INFO L276 IsEmpty]: Start isEmpty. Operand has 221 states, 196 states have (on average 1.6887755102040816) internal successors, (331), 212 states have internal predecessors, (331), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2021-11-13 17:45:26,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-13 17:45:26,129 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:45:26,130 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-13 17:45:26,131 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)] === [2021-11-13 17:45:26,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:45:26,139 INFO L85 PathProgramCache]: Analyzing trace with hash 1126982839, now seen corresponding path program 1 times [2021-11-13 17:45:26,153 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:45:26,154 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728547991] [2021-11-13 17:45:26,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:45:26,156 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:45:26,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:45:26,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:45:26,403 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:45:26,404 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1728547991] [2021-11-13 17:45:26,405 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1728547991] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:45:26,405 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:45:26,406 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-13 17:45:26,408 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892359814] [2021-11-13 17:45:26,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:45:26,415 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 17:45:26,416 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:45:26,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 17:45:26,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 17:45:26,458 INFO L87 Difference]: Start difference. First operand has 221 states, 196 states have (on average 1.6887755102040816) internal successors, (331), 212 states have internal predecessors, (331), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:45:26,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:45:26,622 INFO L93 Difference]: Finished difference Result 615 states and 1033 transitions. [2021-11-13 17:45:26,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 17:45:26,625 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 [2021-11-13 17:45:26,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:45:26,648 INFO L225 Difference]: With dead ends: 615 [2021-11-13 17:45:26,648 INFO L226 Difference]: Without dead ends: 392 [2021-11-13 17:45:26,655 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 17:45:26,661 INFO L933 BasicCegarLoop]: 324 mSDtfsCounter, 217 mSDsluCounter, 285 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 36.16ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 223 SdHoareTripleChecker+Valid, 609 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 12.48ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 42.97ms IncrementalHoareTripleChecker+Time [2021-11-13 17:45:26,662 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [223 Valid, 609 Invalid, 14 Unknown, 0 Unchecked, 12.48ms Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 42.97ms Time] [2021-11-13 17:45:26,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 392 states. [2021-11-13 17:45:26,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 392 to 220. [2021-11-13 17:45:26,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220 states, 197 states have (on average 1.3299492385786802) internal successors, (262), 211 states have internal predecessors, (262), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2021-11-13 17:45:26,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 294 transitions. [2021-11-13 17:45:26,780 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 294 transitions. Word has length 6 [2021-11-13 17:45:26,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:45:26,781 INFO L470 AbstractCegarLoop]: Abstraction has 220 states and 294 transitions. [2021-11-13 17:45:26,781 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) [2021-11-13 17:45:26,782 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 294 transitions. [2021-11-13 17:45:26,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-11-13 17:45:26,795 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:45:26,795 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:45:26,796 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-13 17:45:26,797 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)] === [2021-11-13 17:45:26,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:45:26,801 INFO L85 PathProgramCache]: Analyzing trace with hash 765811442, now seen corresponding path program 1 times [2021-11-13 17:45:26,802 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:45:26,802 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639076196] [2021-11-13 17:45:26,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:45:26,803 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:45:26,897 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-13 17:45:26,898 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [914186549] [2021-11-13 17:45:26,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:45:26,898 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 17:45:26,899 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16c2a965-cc25-4b34-9ab1-44d2da4aa583/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 17:45:26,901 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16c2a965-cc25-4b34-9ab1-44d2da4aa583/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 17:45:26,921 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16c2a965-cc25-4b34-9ab1-44d2da4aa583/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-13 17:45:27,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:45:27,229 INFO L263 TraceCheckSpWp]: Trace formula consists of 308 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 17:45:27,242 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:45:27,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:45:27,719 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-13 17:45:27,719 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:45:27,720 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1639076196] [2021-11-13 17:45:27,720 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-13 17:45:27,721 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [914186549] [2021-11-13 17:45:27,721 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [914186549] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:45:27,721 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:45:27,722 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-13 17:45:27,723 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038995204] [2021-11-13 17:45:27,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:45:27,725 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 17:45:27,726 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:45:27,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 17:45:27,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 17:45:27,727 INFO L87 Difference]: Start difference. First operand 220 states and 294 transitions. Second operand has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:45:27,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:45:27,869 INFO L93 Difference]: Finished difference Result 455 states and 613 transitions. [2021-11-13 17:45:27,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 17:45:27,870 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 [2021-11-13 17:45:27,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:45:27,873 INFO L225 Difference]: With dead ends: 455 [2021-11-13 17:45:27,873 INFO L226 Difference]: Without dead ends: 241 [2021-11-13 17:45:27,876 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 17:45:27,878 INFO L933 BasicCegarLoop]: 270 mSDtfsCounter, 9 mSDsluCounter, 255 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 92.09ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 525 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.04ms SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 113.30ms IncrementalHoareTripleChecker+Time [2021-11-13 17:45:27,879 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 525 Invalid, 72 Unknown, 0 Unchecked, 5.04ms Time], IncrementalHoareTripleChecker [28 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 113.30ms Time] [2021-11-13 17:45:27,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2021-11-13 17:45:27,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 240. [2021-11-13 17:45:27,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 240 states, 217 states have (on average 1.2995391705069124) internal successors, (282), 231 states have internal predecessors, (282), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2021-11-13 17:45:27,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 314 transitions. [2021-11-13 17:45:27,903 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 314 transitions. Word has length 103 [2021-11-13 17:45:27,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:45:27,904 INFO L470 AbstractCegarLoop]: Abstraction has 240 states and 314 transitions. [2021-11-13 17:45:27,904 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) [2021-11-13 17:45:27,905 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 314 transitions. [2021-11-13 17:45:27,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-11-13 17:45:27,908 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:45:27,908 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:45:27,950 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16c2a965-cc25-4b34-9ab1-44d2da4aa583/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-13 17:45:28,123 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16c2a965-cc25-4b34-9ab1-44d2da4aa583/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-11-13 17:45:28,124 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)] === [2021-11-13 17:45:28,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:45:28,125 INFO L85 PathProgramCache]: Analyzing trace with hash 525571696, now seen corresponding path program 1 times [2021-11-13 17:45:28,125 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:45:28,125 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892314506] [2021-11-13 17:45:28,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:45:28,126 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:45:28,167 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-13 17:45:28,167 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [856003671] [2021-11-13 17:45:28,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:45:28,168 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 17:45:28,168 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16c2a965-cc25-4b34-9ab1-44d2da4aa583/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 17:45:28,184 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16c2a965-cc25-4b34-9ab1-44d2da4aa583/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 17:45:28,190 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16c2a965-cc25-4b34-9ab1-44d2da4aa583/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-13 17:45:28,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:45:28,469 INFO L263 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 17:45:28,484 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:45:28,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:45:28,804 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-13 17:45:28,804 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:45:28,805 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892314506] [2021-11-13 17:45:28,805 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-13 17:45:28,807 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [856003671] [2021-11-13 17:45:28,808 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [856003671] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:45:28,808 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:45:28,809 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-13 17:45:28,810 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169303827] [2021-11-13 17:45:28,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:45:28,811 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 17:45:28,811 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:45:28,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 17:45:28,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 17:45:28,813 INFO L87 Difference]: Start difference. First operand 240 states and 314 transitions. Second operand has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:45:28,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:45:28,962 INFO L93 Difference]: Finished difference Result 495 states and 653 transitions. [2021-11-13 17:45:28,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 17:45:28,963 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 [2021-11-13 17:45:28,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:45:28,967 INFO L225 Difference]: With dead ends: 495 [2021-11-13 17:45:28,967 INFO L226 Difference]: Without dead ends: 261 [2021-11-13 17:45:28,969 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 17:45:28,973 INFO L933 BasicCegarLoop]: 270 mSDtfsCounter, 9 mSDsluCounter, 255 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 97.45ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 525 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.17ms SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 120.76ms IncrementalHoareTripleChecker+Time [2021-11-13 17:45:28,976 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 525 Invalid, 72 Unknown, 0 Unchecked, 6.17ms Time], IncrementalHoareTripleChecker [28 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 120.76ms Time] [2021-11-13 17:45:28,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2021-11-13 17:45:29,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 260. [2021-11-13 17:45:29,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 260 states, 237 states have (on average 1.2742616033755274) internal successors, (302), 251 states have internal predecessors, (302), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2021-11-13 17:45:29,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 334 transitions. [2021-11-13 17:45:29,017 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 334 transitions. Word has length 103 [2021-11-13 17:45:29,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:45:29,018 INFO L470 AbstractCegarLoop]: Abstraction has 260 states and 334 transitions. [2021-11-13 17:45:29,019 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) [2021-11-13 17:45:29,019 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 334 transitions. [2021-11-13 17:45:29,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-11-13 17:45:29,023 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:45:29,024 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:45:29,057 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16c2a965-cc25-4b34-9ab1-44d2da4aa583/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-13 17:45:29,231 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16c2a965-cc25-4b34-9ab1-44d2da4aa583/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 17:45:29,231 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)] === [2021-11-13 17:45:29,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:45:29,232 INFO L85 PathProgramCache]: Analyzing trace with hash 919938482, now seen corresponding path program 1 times [2021-11-13 17:45:29,232 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:45:29,233 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [254197801] [2021-11-13 17:45:29,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:45:29,233 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:45:29,294 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-13 17:45:29,295 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1057006267] [2021-11-13 17:45:29,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:45:29,295 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 17:45:29,296 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16c2a965-cc25-4b34-9ab1-44d2da4aa583/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 17:45:29,300 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16c2a965-cc25-4b34-9ab1-44d2da4aa583/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 17:45:29,319 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16c2a965-cc25-4b34-9ab1-44d2da4aa583/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-13 17:45:29,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:45:29,580 INFO L263 TraceCheckSpWp]: Trace formula consists of 312 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 17:45:29,597 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:45:29,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:45:29,934 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-13 17:45:29,934 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:45:29,935 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [254197801] [2021-11-13 17:45:29,935 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-13 17:45:29,935 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1057006267] [2021-11-13 17:45:29,935 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1057006267] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:45:29,935 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:45:29,936 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-13 17:45:29,936 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321731693] [2021-11-13 17:45:29,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:45:29,937 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 17:45:29,937 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:45:29,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 17:45:29,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-13 17:45:29,938 INFO L87 Difference]: Start difference. First operand 260 states and 334 transitions. Second operand has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:45:30,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:45:30,064 INFO L93 Difference]: Finished difference Result 505 states and 653 transitions. [2021-11-13 17:45:30,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 17:45:30,065 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 [2021-11-13 17:45:30,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:45:30,068 INFO L225 Difference]: With dead ends: 505 [2021-11-13 17:45:30,068 INFO L226 Difference]: Without dead ends: 251 [2021-11-13 17:45:30,069 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-13 17:45:30,070 INFO L933 BasicCegarLoop]: 271 mSDtfsCounter, 239 mSDsluCounter, 291 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 73.87ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 255 SdHoareTripleChecker+Valid, 562 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.59ms SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 91.24ms IncrementalHoareTripleChecker+Time [2021-11-13 17:45:30,071 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [255 Valid, 562 Invalid, 66 Unknown, 0 Unchecked, 4.59ms Time], IncrementalHoareTripleChecker [24 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 91.24ms Time] [2021-11-13 17:45:30,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2021-11-13 17:45:30,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 246. [2021-11-13 17:45:30,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 246 states, 223 states have (on average 1.2600896860986548) internal successors, (281), 237 states have internal predecessors, (281), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2021-11-13 17:45:30,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 313 transitions. [2021-11-13 17:45:30,092 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 313 transitions. Word has length 103 [2021-11-13 17:45:30,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:45:30,093 INFO L470 AbstractCegarLoop]: Abstraction has 246 states and 313 transitions. [2021-11-13 17:45:30,093 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) [2021-11-13 17:45:30,093 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 313 transitions. [2021-11-13 17:45:30,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-11-13 17:45:30,097 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:45:30,097 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:45:30,147 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16c2a965-cc25-4b34-9ab1-44d2da4aa583/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-13 17:45:30,319 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16c2a965-cc25-4b34-9ab1-44d2da4aa583/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 17:45:30,320 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)] === [2021-11-13 17:45:30,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:45:30,320 INFO L85 PathProgramCache]: Analyzing trace with hash 6087360, now seen corresponding path program 1 times [2021-11-13 17:45:30,320 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:45:30,321 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337140363] [2021-11-13 17:45:30,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:45:30,321 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:45:30,344 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-13 17:45:30,344 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1690969680] [2021-11-13 17:45:30,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:45:30,345 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 17:45:30,345 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16c2a965-cc25-4b34-9ab1-44d2da4aa583/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 17:45:30,346 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16c2a965-cc25-4b34-9ab1-44d2da4aa583/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 17:45:30,375 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16c2a965-cc25-4b34-9ab1-44d2da4aa583/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-13 17:45:30,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:45:30,602 INFO L263 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 17:45:30,616 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:45:30,903 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:45:30,904 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-13 17:45:30,904 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:45:30,904 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [337140363] [2021-11-13 17:45:30,904 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-13 17:45:30,905 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1690969680] [2021-11-13 17:45:30,905 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1690969680] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:45:30,905 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:45:30,905 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-13 17:45:30,906 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836469453] [2021-11-13 17:45:30,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:45:30,907 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 17:45:30,907 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:45:30,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 17:45:30,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-13 17:45:30,908 INFO L87 Difference]: Start difference. First operand 246 states and 313 transitions. Second operand has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:45:31,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:45:31,040 INFO L93 Difference]: Finished difference Result 566 states and 720 transitions. [2021-11-13 17:45:31,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 17:45:31,042 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 [2021-11-13 17:45:31,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:45:31,046 INFO L225 Difference]: With dead ends: 566 [2021-11-13 17:45:31,046 INFO L226 Difference]: Without dead ends: 326 [2021-11-13 17:45:31,047 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-13 17:45:31,048 INFO L933 BasicCegarLoop]: 367 mSDtfsCounter, 232 mSDsluCounter, 490 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 66.81ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 248 SdHoareTripleChecker+Valid, 857 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.40ms SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 92.62ms IncrementalHoareTripleChecker+Time [2021-11-13 17:45:31,049 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [248 Valid, 857 Invalid, 66 Unknown, 0 Unchecked, 7.40ms Time], IncrementalHoareTripleChecker [24 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 92.62ms Time] [2021-11-13 17:45:31,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2021-11-13 17:45:31,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 232. [2021-11-13 17:45:31,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232 states, 209 states have (on average 1.244019138755981) internal successors, (260), 223 states have internal predecessors, (260), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2021-11-13 17:45:31,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 292 transitions. [2021-11-13 17:45:31,068 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 292 transitions. Word has length 103 [2021-11-13 17:45:31,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:45:31,069 INFO L470 AbstractCegarLoop]: Abstraction has 232 states and 292 transitions. [2021-11-13 17:45:31,069 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) [2021-11-13 17:45:31,069 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 292 transitions. [2021-11-13 17:45:31,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-11-13 17:45:31,071 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:45:31,072 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:45:31,120 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16c2a965-cc25-4b34-9ab1-44d2da4aa583/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-13 17:45:31,299 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16c2a965-cc25-4b34-9ab1-44d2da4aa583/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 17:45:31,299 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)] === [2021-11-13 17:45:31,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:45:31,300 INFO L85 PathProgramCache]: Analyzing trace with hash 2030023538, now seen corresponding path program 1 times [2021-11-13 17:45:31,300 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:45:31,300 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919988288] [2021-11-13 17:45:31,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:45:31,301 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:45:31,332 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-13 17:45:31,338 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [602561404] [2021-11-13 17:45:31,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:45:31,339 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 17:45:31,339 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16c2a965-cc25-4b34-9ab1-44d2da4aa583/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 17:45:31,343 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16c2a965-cc25-4b34-9ab1-44d2da4aa583/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 17:45:31,363 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16c2a965-cc25-4b34-9ab1-44d2da4aa583/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-13 17:45:31,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:45:31,577 INFO L263 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 17:45:31,581 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:45:31,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:45:31,887 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-13 17:45:31,887 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:45:31,888 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919988288] [2021-11-13 17:45:31,888 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-13 17:45:31,888 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [602561404] [2021-11-13 17:45:31,888 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [602561404] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:45:31,889 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:45:31,889 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-13 17:45:31,889 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374676084] [2021-11-13 17:45:31,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:45:31,890 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 17:45:31,890 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:45:31,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 17:45:31,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-13 17:45:31,891 INFO L87 Difference]: Start difference. First operand 232 states and 292 transitions. Second operand has 4 states, 3 states have (on average 34.333333333333336) internal successors, (103), 4 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:45:31,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:45:31,964 INFO L93 Difference]: Finished difference Result 416 states and 516 transitions. [2021-11-13 17:45:31,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 17:45:31,965 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 [2021-11-13 17:45:31,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:45:31,972 INFO L225 Difference]: With dead ends: 416 [2021-11-13 17:45:31,973 INFO L226 Difference]: Without dead ends: 415 [2021-11-13 17:45:31,973 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-13 17:45:31,975 INFO L933 BasicCegarLoop]: 303 mSDtfsCounter, 105 mSDsluCounter, 568 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 30.03ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 871 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.13ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 35.86ms IncrementalHoareTripleChecker+Time [2021-11-13 17:45:31,976 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [111 Valid, 871 Invalid, 26 Unknown, 0 Unchecked, 6.13ms Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 35.86ms Time] [2021-11-13 17:45:31,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 415 states. [2021-11-13 17:45:32,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 415 to 413. [2021-11-13 17:45:32,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 413 states, 384 states have (on average 1.2213541666666667) internal successors, (469), 398 states have internal predecessors, (469), 22 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (22), 13 states have call predecessors, (22), 22 states have call successors, (22) [2021-11-13 17:45:32,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 413 states to 413 states and 513 transitions. [2021-11-13 17:45:32,026 INFO L78 Accepts]: Start accepts. Automaton has 413 states and 513 transitions. Word has length 103 [2021-11-13 17:45:32,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:45:32,027 INFO L470 AbstractCegarLoop]: Abstraction has 413 states and 513 transitions. [2021-11-13 17:45:32,028 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) [2021-11-13 17:45:32,028 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states and 513 transitions. [2021-11-13 17:45:32,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-11-13 17:45:32,030 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:45:32,030 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:45:32,079 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16c2a965-cc25-4b34-9ab1-44d2da4aa583/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-13 17:45:32,247 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16c2a965-cc25-4b34-9ab1-44d2da4aa583/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-11-13 17:45:32,248 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-13 17:45:32,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:45:32,248 INFO L85 PathProgramCache]: Analyzing trace with hash -1493778997, now seen corresponding path program 1 times [2021-11-13 17:45:32,249 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:45:32,249 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [930189553] [2021-11-13 17:45:32,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:45:32,249 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:45:32,275 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-13 17:45:32,275 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [566724153] [2021-11-13 17:45:32,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:45:32,276 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 17:45:32,276 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16c2a965-cc25-4b34-9ab1-44d2da4aa583/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 17:45:32,277 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16c2a965-cc25-4b34-9ab1-44d2da4aa583/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 17:45:32,299 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16c2a965-cc25-4b34-9ab1-44d2da4aa583/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-13 17:45:32,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:45:32,528 INFO L263 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 17:45:32,533 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:45:32,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:45:32,884 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-13 17:45:32,885 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:45:32,885 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [930189553] [2021-11-13 17:45:32,885 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-13 17:45:32,885 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [566724153] [2021-11-13 17:45:32,885 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [566724153] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:45:32,886 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:45:32,886 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-13 17:45:32,886 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363307702] [2021-11-13 17:45:32,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:45:32,887 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 17:45:32,887 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:45:32,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 17:45:32,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-13 17:45:32,889 INFO L87 Difference]: Start difference. First operand 413 states and 513 transitions. Second operand has 4 states, 3 states have (on average 34.666666666666664) internal successors, (104), 4 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:45:32,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:45:32,957 INFO L93 Difference]: Finished difference Result 413 states and 513 transitions. [2021-11-13 17:45:32,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 17:45:32,958 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 [2021-11-13 17:45:32,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:45:32,963 INFO L225 Difference]: With dead ends: 413 [2021-11-13 17:45:32,963 INFO L226 Difference]: Without dead ends: 412 [2021-11-13 17:45:32,964 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-13 17:45:32,965 INFO L933 BasicCegarLoop]: 265 mSDtfsCounter, 135 mSDsluCounter, 288 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.21ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 553 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.58ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 29.53ms IncrementalHoareTripleChecker+Time [2021-11-13 17:45:32,965 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [151 Valid, 553 Invalid, 19 Unknown, 0 Unchecked, 6.58ms Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 29.53ms Time] [2021-11-13 17:45:32,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 412 states. [2021-11-13 17:45:32,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 412 to 412. [2021-11-13 17:45:32,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 412 states, 384 states have (on average 1.21875) internal successors, (468), 397 states have internal predecessors, (468), 22 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (22), 13 states have call predecessors, (22), 22 states have call successors, (22) [2021-11-13 17:45:32,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 412 states to 412 states and 512 transitions. [2021-11-13 17:45:32,991 INFO L78 Accepts]: Start accepts. Automaton has 412 states and 512 transitions. Word has length 104 [2021-11-13 17:45:32,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:45:32,992 INFO L470 AbstractCegarLoop]: Abstraction has 412 states and 512 transitions. [2021-11-13 17:45:32,992 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) [2021-11-13 17:45:32,993 INFO L276 IsEmpty]: Start isEmpty. Operand 412 states and 512 transitions. [2021-11-13 17:45:32,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-11-13 17:45:32,994 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:45:32,995 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:45:33,043 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16c2a965-cc25-4b34-9ab1-44d2da4aa583/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-13 17:45:33,215 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16c2a965-cc25-4b34-9ab1-44d2da4aa583/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 17:45:33,215 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-13 17:45:33,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:45:33,216 INFO L85 PathProgramCache]: Analyzing trace with hash -1365413568, now seen corresponding path program 1 times [2021-11-13 17:45:33,216 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:45:33,217 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020298860] [2021-11-13 17:45:33,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:45:33,217 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:45:33,239 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-13 17:45:33,240 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1534455468] [2021-11-13 17:45:33,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:45:33,240 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 17:45:33,240 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16c2a965-cc25-4b34-9ab1-44d2da4aa583/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 17:45:33,242 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16c2a965-cc25-4b34-9ab1-44d2da4aa583/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 17:45:33,249 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16c2a965-cc25-4b34-9ab1-44d2da4aa583/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-13 17:45:33,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:45:33,497 INFO L263 TraceCheckSpWp]: Trace formula consists of 308 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-13 17:45:33,504 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:45:33,868 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:45:33,869 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:45:34,221 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:45:34,222 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:45:34,222 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020298860] [2021-11-13 17:45:34,222 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-13 17:45:34,222 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1534455468] [2021-11-13 17:45:34,222 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1534455468] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 17:45:34,223 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-13 17:45:34,223 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2021-11-13 17:45:34,223 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442142681] [2021-11-13 17:45:34,223 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-13 17:45:34,224 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 17:45:34,225 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:45:34,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 17:45:34,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-11-13 17:45:34,226 INFO L87 Difference]: Start difference. First operand 412 states and 512 transitions. Second operand has 8 states, 8 states have (on average 26.5) internal successors, (212), 8 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:45:34,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:45:34,420 INFO L93 Difference]: Finished difference Result 634 states and 796 transitions. [2021-11-13 17:45:34,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-13 17:45:34,421 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 26.5) internal successors, (212), 8 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 108 [2021-11-13 17:45:34,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:45:34,427 INFO L225 Difference]: With dead ends: 634 [2021-11-13 17:45:34,427 INFO L226 Difference]: Without dead ends: 600 [2021-11-13 17:45:34,429 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 208 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2021-11-13 17:45:34,430 INFO L933 BasicCegarLoop]: 282 mSDtfsCounter, 707 mSDsluCounter, 1061 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 100.35ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 725 SdHoareTripleChecker+Valid, 1343 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.83ms SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 121.43ms IncrementalHoareTripleChecker+Time [2021-11-13 17:45:34,430 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [725 Valid, 1343 Invalid, 74 Unknown, 0 Unchecked, 7.83ms Time], IncrementalHoareTripleChecker [13 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 121.43ms Time] [2021-11-13 17:45:34,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 600 states. [2021-11-13 17:45:34,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 600 to 600. [2021-11-13 17:45:34,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 600 states, 566 states have (on average 1.2102473498233215) internal successors, (685), 579 states have internal predecessors, (685), 28 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (28), 19 states have call predecessors, (28), 28 states have call successors, (28) [2021-11-13 17:45:34,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 600 states to 600 states and 741 transitions. [2021-11-13 17:45:34,470 INFO L78 Accepts]: Start accepts. Automaton has 600 states and 741 transitions. Word has length 108 [2021-11-13 17:45:34,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:45:34,471 INFO L470 AbstractCegarLoop]: Abstraction has 600 states and 741 transitions. [2021-11-13 17:45:34,471 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 26.5) internal successors, (212), 8 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:45:34,472 INFO L276 IsEmpty]: Start isEmpty. Operand 600 states and 741 transitions. [2021-11-13 17:45:34,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-11-13 17:45:34,475 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:45:34,476 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:45:34,524 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16c2a965-cc25-4b34-9ab1-44d2da4aa583/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-13 17:45:34,691 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16c2a965-cc25-4b34-9ab1-44d2da4aa583/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 17:45:34,691 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-13 17:45:34,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:45:34,692 INFO L85 PathProgramCache]: Analyzing trace with hash -1366065166, now seen corresponding path program 1 times [2021-11-13 17:45:34,692 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:45:34,692 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707833289] [2021-11-13 17:45:34,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:45:34,692 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:45:34,724 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-13 17:45:34,728 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1336203304] [2021-11-13 17:45:34,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:45:34,729 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 17:45:34,729 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16c2a965-cc25-4b34-9ab1-44d2da4aa583/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 17:45:34,730 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16c2a965-cc25-4b34-9ab1-44d2da4aa583/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 17:45:34,755 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16c2a965-cc25-4b34-9ab1-44d2da4aa583/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-13 17:45:34,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:45:34,966 INFO L263 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-13 17:45:34,970 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:45:35,606 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:45:35,606 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-13 17:45:35,607 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:45:35,607 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707833289] [2021-11-13 17:45:35,607 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-13 17:45:35,607 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1336203304] [2021-11-13 17:45:35,607 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1336203304] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:45:35,608 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:45:35,608 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-13 17:45:35,608 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524514599] [2021-11-13 17:45:35,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:45:35,609 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 17:45:35,609 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:45:35,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 17:45:35,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 17:45:35,610 INFO L87 Difference]: Start difference. First operand 600 states and 741 transitions. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:45:35,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:45:35,705 INFO L93 Difference]: Finished difference Result 1051 states and 1305 transitions. [2021-11-13 17:45:35,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 17:45:35,706 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 [2021-11-13 17:45:35,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:45:35,712 INFO L225 Difference]: With dead ends: 1051 [2021-11-13 17:45:35,712 INFO L226 Difference]: Without dead ends: 598 [2021-11-13 17:45:35,713 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 17:45:35,714 INFO L933 BasicCegarLoop]: 277 mSDtfsCounter, 65 mSDsluCounter, 259 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 56.68ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 536 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.75ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 62.79ms IncrementalHoareTripleChecker+Time [2021-11-13 17:45:35,715 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [70 Valid, 536 Invalid, 8 Unknown, 0 Unchecked, 2.75ms Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 62.79ms Time] [2021-11-13 17:45:35,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 598 states. [2021-11-13 17:45:35,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 598 to 598. [2021-11-13 17:45:35,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 598 states, 564 states have (on average 1.2092198581560283) internal successors, (682), 577 states have internal predecessors, (682), 28 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (28), 19 states have call predecessors, (28), 28 states have call successors, (28) [2021-11-13 17:45:35,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 598 states to 598 states and 738 transitions. [2021-11-13 17:45:35,749 INFO L78 Accepts]: Start accepts. Automaton has 598 states and 738 transitions. Word has length 108 [2021-11-13 17:45:35,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:45:35,750 INFO L470 AbstractCegarLoop]: Abstraction has 598 states and 738 transitions. [2021-11-13 17:45:35,750 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) [2021-11-13 17:45:35,751 INFO L276 IsEmpty]: Start isEmpty. Operand 598 states and 738 transitions. [2021-11-13 17:45:35,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-11-13 17:45:35,753 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:45:35,753 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:45:35,793 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16c2a965-cc25-4b34-9ab1-44d2da4aa583/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-13 17:45:35,979 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16c2a965-cc25-4b34-9ab1-44d2da4aa583/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2021-11-13 17:45:35,979 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-13 17:45:35,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:45:35,980 INFO L85 PathProgramCache]: Analyzing trace with hash -889816829, now seen corresponding path program 1 times [2021-11-13 17:45:35,980 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:45:35,980 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2038560949] [2021-11-13 17:45:35,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:45:35,980 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:45:36,004 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-13 17:45:36,004 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1321168929] [2021-11-13 17:45:36,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:45:36,005 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 17:45:36,005 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16c2a965-cc25-4b34-9ab1-44d2da4aa583/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 17:45:36,006 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16c2a965-cc25-4b34-9ab1-44d2da4aa583/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 17:45:36,031 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16c2a965-cc25-4b34-9ab1-44d2da4aa583/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-13 17:45:36,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:45:36,283 INFO L263 TraceCheckSpWp]: Trace formula consists of 406 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-13 17:45:36,287 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:45:36,674 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-13 17:45:36,675 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-13 17:45:36,675 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:45:36,675 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2038560949] [2021-11-13 17:45:36,675 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-13 17:45:36,676 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1321168929] [2021-11-13 17:45:36,676 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1321168929] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:45:36,676 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:45:36,676 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-13 17:45:36,677 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84440089] [2021-11-13 17:45:36,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:45:36,677 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 17:45:36,678 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:45:36,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 17:45:36,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 17:45:36,679 INFO L87 Difference]: Start difference. First operand 598 states and 738 transitions. Second operand has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-13 17:45:36,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:45:36,744 INFO L93 Difference]: Finished difference Result 1136 states and 1408 transitions. [2021-11-13 17:45:36,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 17:45:36,748 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 123 [2021-11-13 17:45:36,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:45:36,755 INFO L225 Difference]: With dead ends: 1136 [2021-11-13 17:45:36,755 INFO L226 Difference]: Without dead ends: 596 [2021-11-13 17:45:36,756 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 17:45:36,758 INFO L933 BasicCegarLoop]: 274 mSDtfsCounter, 15 mSDsluCounter, 260 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 34.19ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 534 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.17ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 37.32ms IncrementalHoareTripleChecker+Time [2021-11-13 17:45:36,759 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17 Valid, 534 Invalid, 7 Unknown, 0 Unchecked, 2.17ms Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 37.32ms Time] [2021-11-13 17:45:36,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 596 states. [2021-11-13 17:45:36,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 596 to 596. [2021-11-13 17:45:36,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 596 states, 562 states have (on average 1.208185053380783) internal successors, (679), 575 states have internal predecessors, (679), 28 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (28), 19 states have call predecessors, (28), 28 states have call successors, (28) [2021-11-13 17:45:36,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 596 states to 596 states and 735 transitions. [2021-11-13 17:45:36,808 INFO L78 Accepts]: Start accepts. Automaton has 596 states and 735 transitions. Word has length 123 [2021-11-13 17:45:36,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:45:36,808 INFO L470 AbstractCegarLoop]: Abstraction has 596 states and 735 transitions. [2021-11-13 17:45:36,809 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-13 17:45:36,809 INFO L276 IsEmpty]: Start isEmpty. Operand 596 states and 735 transitions. [2021-11-13 17:45:36,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2021-11-13 17:45:36,811 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:45:36,812 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:45:36,863 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16c2a965-cc25-4b34-9ab1-44d2da4aa583/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-11-13 17:45:37,033 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16c2a965-cc25-4b34-9ab1-44d2da4aa583/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-11-13 17:45:37,034 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-13 17:45:37,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:45:37,034 INFO L85 PathProgramCache]: Analyzing trace with hash 2124754754, now seen corresponding path program 1 times [2021-11-13 17:45:37,035 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:45:37,035 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [839710418] [2021-11-13 17:45:37,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:45:37,035 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:45:37,058 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-13 17:45:37,058 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [85369528] [2021-11-13 17:45:37,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:45:37,059 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 17:45:37,059 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16c2a965-cc25-4b34-9ab1-44d2da4aa583/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 17:45:37,060 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16c2a965-cc25-4b34-9ab1-44d2da4aa583/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 17:45:37,074 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16c2a965-cc25-4b34-9ab1-44d2da4aa583/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-13 17:45:37,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:45:37,611 INFO L263 TraceCheckSpWp]: Trace formula consists of 511 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-13 17:45:37,615 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:45:37,885 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-13 17:45:37,885 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-13 17:45:37,886 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:45:37,886 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [839710418] [2021-11-13 17:45:37,886 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-13 17:45:37,886 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [85369528] [2021-11-13 17:45:37,887 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [85369528] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:45:37,887 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:45:37,887 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-13 17:45:37,887 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83509468] [2021-11-13 17:45:37,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:45:37,888 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 17:45:37,889 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:45:37,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 17:45:37,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-13 17:45:37,890 INFO L87 Difference]: Start difference. First operand 596 states and 735 transitions. Second operand has 4 states, 4 states have (on average 31.0) internal successors, (124), 4 states have internal predecessors, (124), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2021-11-13 17:45:37,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:45:37,972 INFO L93 Difference]: Finished difference Result 1143 states and 1433 transitions. [2021-11-13 17:45:37,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 17:45:37,973 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), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 138 [2021-11-13 17:45:37,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:45:37,980 INFO L225 Difference]: With dead ends: 1143 [2021-11-13 17:45:37,980 INFO L226 Difference]: Without dead ends: 599 [2021-11-13 17:45:37,982 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-13 17:45:37,983 INFO L933 BasicCegarLoop]: 271 mSDtfsCounter, 2 mSDsluCounter, 535 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26.46ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 806 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.38ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 31.57ms IncrementalHoareTripleChecker+Time [2021-11-13 17:45:37,983 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 806 Invalid, 21 Unknown, 0 Unchecked, 4.38ms Time], IncrementalHoareTripleChecker [3 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 31.57ms Time] [2021-11-13 17:45:37,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 599 states. [2021-11-13 17:45:38,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 599 to 599. [2021-11-13 17:45:38,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 599 states, 564 states have (on average 1.2092198581560283) internal successors, (682), 578 states have internal predecessors, (682), 28 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (34), 19 states have call predecessors, (34), 28 states have call successors, (34) [2021-11-13 17:45:38,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 599 states to 599 states and 744 transitions. [2021-11-13 17:45:38,020 INFO L78 Accepts]: Start accepts. Automaton has 599 states and 744 transitions. Word has length 138 [2021-11-13 17:45:38,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:45:38,020 INFO L470 AbstractCegarLoop]: Abstraction has 599 states and 744 transitions. [2021-11-13 17:45:38,021 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), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2021-11-13 17:45:38,021 INFO L276 IsEmpty]: Start isEmpty. Operand 599 states and 744 transitions. [2021-11-13 17:45:38,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2021-11-13 17:45:38,025 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:45:38,025 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:45:38,072 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16c2a965-cc25-4b34-9ab1-44d2da4aa583/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-11-13 17:45:38,251 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16c2a965-cc25-4b34-9ab1-44d2da4aa583/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-11-13 17:45:38,251 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)] === [2021-11-13 17:45:38,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:45:38,252 INFO L85 PathProgramCache]: Analyzing trace with hash -455907138, now seen corresponding path program 1 times [2021-11-13 17:45:38,252 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:45:38,252 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1677539108] [2021-11-13 17:45:38,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:45:38,253 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:45:38,281 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-13 17:45:38,281 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [897598483] [2021-11-13 17:45:38,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:45:38,282 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 17:45:38,282 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16c2a965-cc25-4b34-9ab1-44d2da4aa583/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 17:45:38,283 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16c2a965-cc25-4b34-9ab1-44d2da4aa583/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 17:45:38,327 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16c2a965-cc25-4b34-9ab1-44d2da4aa583/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-11-13 17:45:38,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:45:38,955 INFO L263 TraceCheckSpWp]: Trace formula consists of 535 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-13 17:45:38,960 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:45:39,333 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 25 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-13 17:45:39,334 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:45:39,786 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 4 proven. 19 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-11-13 17:45:39,786 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:45:39,787 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1677539108] [2021-11-13 17:45:39,787 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-13 17:45:39,787 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [897598483] [2021-11-13 17:45:39,787 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [897598483] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 17:45:39,787 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-13 17:45:39,788 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2021-11-13 17:45:39,788 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520034901] [2021-11-13 17:45:39,788 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-13 17:45:39,789 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 17:45:39,789 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:45:39,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 17:45:39,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-13 17:45:39,790 INFO L87 Difference]: Start difference. First operand 599 states and 744 transitions. Second operand has 8 states, 8 states have (on average 16.75) internal successors, (134), 8 states have internal predecessors, (134), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (8), 1 states have call predecessors, (8), 2 states have call successors, (8) [2021-11-13 17:45:40,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:45:40,060 INFO L93 Difference]: Finished difference Result 1157 states and 1469 transitions. [2021-11-13 17:45:40,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-13 17:45:40,061 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 16.75) internal successors, (134), 8 states have internal predecessors, (134), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (8), 1 states have call predecessors, (8), 2 states have call successors, (8) Word has length 142 [2021-11-13 17:45:40,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:45:40,068 INFO L225 Difference]: With dead ends: 1157 [2021-11-13 17:45:40,068 INFO L226 Difference]: Without dead ends: 608 [2021-11-13 17:45:40,070 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 286 GetRequests, 276 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=53, Invalid=79, Unknown=0, NotChecked=0, Total=132 [2021-11-13 17:45:40,071 INFO L933 BasicCegarLoop]: 269 mSDtfsCounter, 21 mSDsluCounter, 529 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 105.50ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 798 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.80ms SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 132.50ms IncrementalHoareTripleChecker+Time [2021-11-13 17:45:40,072 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [21 Valid, 798 Invalid, 81 Unknown, 0 Unchecked, 3.80ms Time], IncrementalHoareTripleChecker [21 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 132.50ms Time] [2021-11-13 17:45:40,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 608 states. [2021-11-13 17:45:40,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 608 to 608. [2021-11-13 17:45:40,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 608 states, 572 states have (on average 1.2132867132867133) internal successors, (694), 586 states have internal predecessors, (694), 28 states have call successors, (28), 3 states have call predecessors, (28), 4 states have return successors, (34), 19 states have call predecessors, (34), 28 states have call successors, (34) [2021-11-13 17:45:40,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 608 states to 608 states and 756 transitions. [2021-11-13 17:45:40,114 INFO L78 Accepts]: Start accepts. Automaton has 608 states and 756 transitions. Word has length 142 [2021-11-13 17:45:40,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:45:40,114 INFO L470 AbstractCegarLoop]: Abstraction has 608 states and 756 transitions. [2021-11-13 17:45:40,115 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.75) internal successors, (134), 8 states have internal predecessors, (134), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (8), 1 states have call predecessors, (8), 2 states have call successors, (8) [2021-11-13 17:45:40,115 INFO L276 IsEmpty]: Start isEmpty. Operand 608 states and 756 transitions. [2021-11-13 17:45:40,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2021-11-13 17:45:40,118 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:45:40,118 INFO L514 BasicCegarLoop]: trace histogram [12, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:45:40,166 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16c2a965-cc25-4b34-9ab1-44d2da4aa583/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-11-13 17:45:40,331 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16c2a965-cc25-4b34-9ab1-44d2da4aa583/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-11-13 17:45:40,331 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)] === [2021-11-13 17:45:40,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:45:40,332 INFO L85 PathProgramCache]: Analyzing trace with hash 1165658882, now seen corresponding path program 2 times [2021-11-13 17:45:40,332 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:45:40,333 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576374025] [2021-11-13 17:45:40,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:45:40,333 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:45:40,361 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-13 17:45:40,361 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [391587614] [2021-11-13 17:45:40,361 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-13 17:45:40,362 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 17:45:40,362 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16c2a965-cc25-4b34-9ab1-44d2da4aa583/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 17:45:40,375 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16c2a965-cc25-4b34-9ab1-44d2da4aa583/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 17:45:40,376 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16c2a965-cc25-4b34-9ab1-44d2da4aa583/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-11-13 17:45:41,444 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-13 17:45:41,444 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 17:45:41,451 INFO L263 TraceCheckSpWp]: Trace formula consists of 583 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-13 17:45:41,455 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:45:41,869 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 68 proven. 10 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2021-11-13 17:45:41,870 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:45:42,472 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 4 proven. 71 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2021-11-13 17:45:42,473 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:45:42,473 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576374025] [2021-11-13 17:45:42,473 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-13 17:45:42,473 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [391587614] [2021-11-13 17:45:42,473 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [391587614] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 17:45:42,474 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-13 17:45:42,474 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 15 [2021-11-13 17:45:42,474 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77654355] [2021-11-13 17:45:42,474 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-13 17:45:42,475 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-13 17:45:42,475 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:45:42,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-13 17:45:42,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2021-11-13 17:45:42,476 INFO L87 Difference]: Start difference. First operand 608 states and 756 transitions. Second operand has 15 states, 15 states have (on average 9.466666666666667) internal successors, (142), 15 states have internal predecessors, (142), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (8), 1 states have call predecessors, (8), 2 states have call successors, (8) [2021-11-13 17:45:43,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:45:43,621 INFO L93 Difference]: Finished difference Result 1216 states and 1564 transitions. [2021-11-13 17:45:43,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-13 17:45:43,622 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 9.466666666666667) internal successors, (142), 15 states have internal predecessors, (142), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (8), 1 states have call predecessors, (8), 2 states have call successors, (8) Word has length 150 [2021-11-13 17:45:43,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:45:43,628 INFO L225 Difference]: With dead ends: 1216 [2021-11-13 17:45:43,628 INFO L226 Difference]: Without dead ends: 614 [2021-11-13 17:45:43,631 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 311 GetRequests, 285 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=244, Invalid=512, Unknown=0, NotChecked=0, Total=756 [2021-11-13 17:45:43,632 INFO L933 BasicCegarLoop]: 265 mSDtfsCounter, 280 mSDsluCounter, 1343 mSDsCounter, 0 mSdLazyCounter, 292 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 350.45ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 304 SdHoareTripleChecker+Valid, 1608 SdHoareTripleChecker+Invalid, 348 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.16ms SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 292 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 429.77ms IncrementalHoareTripleChecker+Time [2021-11-13 17:45:43,633 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [304 Valid, 1608 Invalid, 348 Unknown, 0 Unchecked, 10.16ms Time], IncrementalHoareTripleChecker [56 Valid, 292 Invalid, 0 Unknown, 0 Unchecked, 429.77ms Time] [2021-11-13 17:45:43,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 614 states. [2021-11-13 17:45:43,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 614 to 608. [2021-11-13 17:45:43,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 608 states, 572 states have (on average 1.2132867132867133) internal successors, (694), 586 states have internal predecessors, (694), 28 states have call successors, (28), 3 states have call predecessors, (28), 4 states have return successors, (34), 19 states have call predecessors, (34), 28 states have call successors, (34) [2021-11-13 17:45:43,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 608 states to 608 states and 756 transitions. [2021-11-13 17:45:43,671 INFO L78 Accepts]: Start accepts. Automaton has 608 states and 756 transitions. Word has length 150 [2021-11-13 17:45:43,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:45:43,672 INFO L470 AbstractCegarLoop]: Abstraction has 608 states and 756 transitions. [2021-11-13 17:45:43,672 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 9.466666666666667) internal successors, (142), 15 states have internal predecessors, (142), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (8), 1 states have call predecessors, (8), 2 states have call successors, (8) [2021-11-13 17:45:43,673 INFO L276 IsEmpty]: Start isEmpty. Operand 608 states and 756 transitions. [2021-11-13 17:45:43,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2021-11-13 17:45:43,676 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:45:43,676 INFO L514 BasicCegarLoop]: trace histogram [30, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:45:43,712 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16c2a965-cc25-4b34-9ab1-44d2da4aa583/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-11-13 17:45:43,891 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16c2a965-cc25-4b34-9ab1-44d2da4aa583/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-11-13 17:45:43,891 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)] === [2021-11-13 17:45:43,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:45:43,892 INFO L85 PathProgramCache]: Analyzing trace with hash 1265134912, now seen corresponding path program 3 times [2021-11-13 17:45:43,892 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:45:43,892 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [447298668] [2021-11-13 17:45:43,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:45:43,892 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:45:43,912 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-13 17:45:43,912 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [95432485] [2021-11-13 17:45:43,913 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-13 17:45:43,913 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 17:45:43,913 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16c2a965-cc25-4b34-9ab1-44d2da4aa583/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 17:45:43,920 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16c2a965-cc25-4b34-9ab1-44d2da4aa583/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 17:45:43,922 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16c2a965-cc25-4b34-9ab1-44d2da4aa583/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-11-13 17:45:44,342 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-13 17:45:44,342 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 17:45:44,345 INFO L263 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-13 17:45:44,350 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:45:44,943 INFO L134 CoverageAnalysis]: Checked inductivity of 583 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 579 trivial. 0 not checked. [2021-11-13 17:45:44,943 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-13 17:45:44,943 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:45:44,944 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [447298668] [2021-11-13 17:45:44,944 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-13 17:45:44,944 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [95432485] [2021-11-13 17:45:44,944 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [95432485] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:45:44,944 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:45:44,944 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-13 17:45:44,947 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120125070] [2021-11-13 17:45:44,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:45:44,948 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 17:45:44,948 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:45:44,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 17:45:44,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-11-13 17:45:44,949 INFO L87 Difference]: Start difference. First operand 608 states and 756 transitions. Second operand has 6 states, 5 states have (on average 24.4) internal successors, (122), 6 states have internal predecessors, (122), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2021-11-13 17:45:45,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:45:45,099 INFO L93 Difference]: Finished difference Result 608 states and 756 transitions. [2021-11-13 17:45:45,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-13 17:45:45,100 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 24.4) internal successors, (122), 6 states have internal predecessors, (122), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 168 [2021-11-13 17:45:45,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:45:45,105 INFO L225 Difference]: With dead ends: 608 [2021-11-13 17:45:45,105 INFO L226 Difference]: Without dead ends: 607 [2021-11-13 17:45:45,109 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-11-13 17:45:45,110 INFO L933 BasicCegarLoop]: 458 mSDtfsCounter, 311 mSDsluCounter, 946 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 78.33ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 329 SdHoareTripleChecker+Valid, 1404 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.70ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 97.90ms IncrementalHoareTripleChecker+Time [2021-11-13 17:45:45,110 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [329 Valid, 1404 Invalid, 68 Unknown, 0 Unchecked, 5.70ms Time], IncrementalHoareTripleChecker [1 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 97.90ms Time] [2021-11-13 17:45:45,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 607 states. [2021-11-13 17:45:45,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 607 to 607. [2021-11-13 17:45:45,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 607 states, 572 states have (on average 1.2097902097902098) internal successors, (692), 585 states have internal predecessors, (692), 28 states have call successors, (28), 3 states have call predecessors, (28), 4 states have return successors, (34), 19 states have call predecessors, (34), 28 states have call successors, (34) [2021-11-13 17:45:45,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 607 states to 607 states and 754 transitions. [2021-11-13 17:45:45,148 INFO L78 Accepts]: Start accepts. Automaton has 607 states and 754 transitions. Word has length 168 [2021-11-13 17:45:45,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:45:45,149 INFO L470 AbstractCegarLoop]: Abstraction has 607 states and 754 transitions. [2021-11-13 17:45:45,149 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 24.4) internal successors, (122), 6 states have internal predecessors, (122), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2021-11-13 17:45:45,149 INFO L276 IsEmpty]: Start isEmpty. Operand 607 states and 754 transitions. [2021-11-13 17:45:45,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 368 [2021-11-13 17:45:45,159 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:45:45,159 INFO L514 BasicCegarLoop]: trace histogram [30, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:45:45,209 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16c2a965-cc25-4b34-9ab1-44d2da4aa583/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-11-13 17:45:45,382 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16c2a965-cc25-4b34-9ab1-44d2da4aa583/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 17:45:45,383 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-13 17:45:45,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:45:45,383 INFO L85 PathProgramCache]: Analyzing trace with hash -320331182, now seen corresponding path program 1 times [2021-11-13 17:45:45,384 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:45:45,384 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644975666] [2021-11-13 17:45:45,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:45:45,384 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:45:45,424 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-13 17:45:45,424 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [317139861] [2021-11-13 17:45:45,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:45:45,425 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 17:45:45,425 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16c2a965-cc25-4b34-9ab1-44d2da4aa583/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 17:45:45,426 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16c2a965-cc25-4b34-9ab1-44d2da4aa583/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 17:45:45,434 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16c2a965-cc25-4b34-9ab1-44d2da4aa583/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-11-13 17:45:45,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:45:45,918 INFO L263 TraceCheckSpWp]: Trace formula consists of 1174 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-13 17:45:45,963 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:45:47,143 INFO L134 CoverageAnalysis]: Checked inductivity of 875 backedges. 0 proven. 296 refuted. 0 times theorem prover too weak. 579 trivial. 0 not checked. [2021-11-13 17:45:47,143 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:45:48,324 INFO L134 CoverageAnalysis]: Checked inductivity of 875 backedges. 0 proven. 296 refuted. 0 times theorem prover too weak. 579 trivial. 0 not checked. [2021-11-13 17:45:48,324 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:45:48,324 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1644975666] [2021-11-13 17:45:48,324 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-13 17:45:48,325 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [317139861] [2021-11-13 17:45:48,325 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [317139861] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 17:45:48,325 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-13 17:45:48,326 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2021-11-13 17:45:48,326 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493362368] [2021-11-13 17:45:48,326 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-13 17:45:48,328 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-13 17:45:48,328 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:45:48,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-13 17:45:48,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2021-11-13 17:45:48,329 INFO L87 Difference]: Start difference. First operand 607 states and 754 transitions. Second operand has 14 states, 13 states have (on average 49.0) internal successors, (637), 14 states have internal predecessors, (637), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-11-13 17:45:48,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:45:48,653 INFO L93 Difference]: Finished difference Result 819 states and 1029 transitions. [2021-11-13 17:45:48,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-13 17:45:48,654 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 49.0) internal successors, (637), 14 states have internal predecessors, (637), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 367 [2021-11-13 17:45:48,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:45:48,662 INFO L225 Difference]: With dead ends: 819 [2021-11-13 17:45:48,662 INFO L226 Difference]: Without dead ends: 818 [2021-11-13 17:45:48,663 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 736 GetRequests, 720 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=105, Invalid=201, Unknown=0, NotChecked=0, Total=306 [2021-11-13 17:45:48,664 INFO L933 BasicCegarLoop]: 289 mSDtfsCounter, 969 mSDsluCounter, 1635 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 178.52ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1005 SdHoareTripleChecker+Valid, 1924 SdHoareTripleChecker+Invalid, 187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.12ms SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 216.37ms IncrementalHoareTripleChecker+Time [2021-11-13 17:45:48,665 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1005 Valid, 1924 Invalid, 187 Unknown, 0 Unchecked, 10.12ms Time], IncrementalHoareTripleChecker [57 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 216.37ms Time] [2021-11-13 17:45:48,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 818 states. [2021-11-13 17:45:48,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 818 to 606. [2021-11-13 17:45:48,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 606 states, 572 states have (on average 1.2080419580419581) internal successors, (691), 584 states have internal predecessors, (691), 28 states have call successors, (28), 3 states have call predecessors, (28), 4 states have return successors, (34), 19 states have call predecessors, (34), 28 states have call successors, (34) [2021-11-13 17:45:48,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 606 states to 606 states and 753 transitions. [2021-11-13 17:45:48,708 INFO L78 Accepts]: Start accepts. Automaton has 606 states and 753 transitions. Word has length 367 [2021-11-13 17:45:48,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:45:48,709 INFO L470 AbstractCegarLoop]: Abstraction has 606 states and 753 transitions. [2021-11-13 17:45:48,710 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 49.0) internal successors, (637), 14 states have internal predecessors, (637), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-11-13 17:45:48,710 INFO L276 IsEmpty]: Start isEmpty. Operand 606 states and 753 transitions. [2021-11-13 17:45:48,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 373 [2021-11-13 17:45:48,719 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:45:48,719 INFO L514 BasicCegarLoop]: trace histogram [30, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:45:48,771 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16c2a965-cc25-4b34-9ab1-44d2da4aa583/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-11-13 17:45:48,947 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16c2a965-cc25-4b34-9ab1-44d2da4aa583/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-11-13 17:45:48,947 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-13 17:45:48,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:45:48,948 INFO L85 PathProgramCache]: Analyzing trace with hash -1626911136, now seen corresponding path program 1 times [2021-11-13 17:45:48,948 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:45:48,948 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245901642] [2021-11-13 17:45:48,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:45:48,949 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:45:48,982 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-13 17:45:48,982 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [223715895] [2021-11-13 17:45:48,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:45:48,983 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 17:45:48,983 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16c2a965-cc25-4b34-9ab1-44d2da4aa583/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 17:45:48,984 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16c2a965-cc25-4b34-9ab1-44d2da4aa583/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 17:45:49,002 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16c2a965-cc25-4b34-9ab1-44d2da4aa583/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-11-13 17:45:49,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:45:49,447 INFO L263 TraceCheckSpWp]: Trace formula consists of 1198 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-13 17:45:49,490 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:45:50,473 INFO L134 CoverageAnalysis]: Checked inductivity of 880 backedges. 0 proven. 301 refuted. 0 times theorem prover too weak. 579 trivial. 0 not checked. [2021-11-13 17:45:50,474 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:45:51,536 INFO L134 CoverageAnalysis]: Checked inductivity of 880 backedges. 0 proven. 301 refuted. 0 times theorem prover too weak. 579 trivial. 0 not checked. [2021-11-13 17:45:51,536 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:45:51,536 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1245901642] [2021-11-13 17:45:51,536 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-13 17:45:51,536 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [223715895] [2021-11-13 17:45:51,537 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [223715895] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 17:45:51,537 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-13 17:45:51,537 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2021-11-13 17:45:51,538 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301599603] [2021-11-13 17:45:51,538 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-13 17:45:51,539 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-13 17:45:51,539 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:45:51,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-13 17:45:51,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2021-11-13 17:45:51,540 INFO L87 Difference]: Start difference. First operand 606 states and 753 transitions. Second operand has 16 states, 16 states have (on average 40.25) internal successors, (644), 16 states have internal predecessors, (644), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-11-13 17:45:51,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:45:51,975 INFO L93 Difference]: Finished difference Result 1371 states and 1705 transitions. [2021-11-13 17:45:51,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-13 17:45:51,976 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 40.25) internal successors, (644), 16 states have internal predecessors, (644), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 372 [2021-11-13 17:45:51,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:45:51,987 INFO L225 Difference]: With dead ends: 1371 [2021-11-13 17:45:51,988 INFO L226 Difference]: Without dead ends: 1338 [2021-11-13 17:45:51,989 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 748 GetRequests, 728 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=151, Invalid=311, Unknown=0, NotChecked=0, Total=462 [2021-11-13 17:45:51,990 INFO L933 BasicCegarLoop]: 327 mSDtfsCounter, 2165 mSDsluCounter, 1955 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 183.56ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2203 SdHoareTripleChecker+Valid, 2282 SdHoareTripleChecker+Invalid, 201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.83ms SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 242.89ms IncrementalHoareTripleChecker+Time [2021-11-13 17:45:51,991 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2203 Valid, 2282 Invalid, 201 Unknown, 0 Unchecked, 11.83ms Time], IncrementalHoareTripleChecker [53 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 242.89ms Time] [2021-11-13 17:45:51,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1338 states. [2021-11-13 17:45:52,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1338 to 1338. [2021-11-13 17:45:52,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1338 states, 1280 states have (on average 1.19609375) internal successors, (1531), 1292 states have internal predecessors, (1531), 52 states have call successors, (52), 3 states have call predecessors, (52), 4 states have return successors, (66), 43 states have call predecessors, (66), 52 states have call successors, (66) [2021-11-13 17:45:52,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1338 states to 1338 states and 1649 transitions. [2021-11-13 17:45:52,064 INFO L78 Accepts]: Start accepts. Automaton has 1338 states and 1649 transitions. Word has length 372 [2021-11-13 17:45:52,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:45:52,065 INFO L470 AbstractCegarLoop]: Abstraction has 1338 states and 1649 transitions. [2021-11-13 17:45:52,066 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 40.25) internal successors, (644), 16 states have internal predecessors, (644), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-11-13 17:45:52,066 INFO L276 IsEmpty]: Start isEmpty. Operand 1338 states and 1649 transitions. [2021-11-13 17:45:52,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 781 [2021-11-13 17:45:52,102 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:45:52,103 INFO L514 BasicCegarLoop]: trace histogram [30, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:45:52,154 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16c2a965-cc25-4b34-9ab1-44d2da4aa583/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-11-13 17:45:52,331 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16c2a965-cc25-4b34-9ab1-44d2da4aa583/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-11-13 17:45:52,331 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-13 17:45:52,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:45:52,332 INFO L85 PathProgramCache]: Analyzing trace with hash 784604420, now seen corresponding path program 2 times [2021-11-13 17:45:52,333 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:45:52,333 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [520933822] [2021-11-13 17:45:52,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:45:52,333 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:45:52,404 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-13 17:45:52,404 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1279948647] [2021-11-13 17:45:52,404 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-13 17:45:52,405 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 17:45:52,405 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16c2a965-cc25-4b34-9ab1-44d2da4aa583/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 17:45:52,406 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16c2a965-cc25-4b34-9ab1-44d2da4aa583/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 17:45:52,418 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16c2a965-cc25-4b34-9ab1-44d2da4aa583/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-11-13 17:45:52,682 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-13 17:45:52,682 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 17:45:52,686 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 17:45:52,736 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:45:54,928 INFO L134 CoverageAnalysis]: Checked inductivity of 2704 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2704 trivial. 0 not checked. [2021-11-13 17:45:54,928 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-13 17:45:54,928 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:45:54,929 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [520933822] [2021-11-13 17:45:54,929 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-13 17:45:54,929 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1279948647] [2021-11-13 17:45:54,929 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1279948647] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:45:54,929 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:45:54,930 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-13 17:45:54,930 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306983098] [2021-11-13 17:45:54,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:45:54,931 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 17:45:54,931 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:45:54,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 17:45:54,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-13 17:45:54,932 INFO L87 Difference]: Start difference. First operand 1338 states and 1649 transitions. Second operand has 4 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2021-11-13 17:45:55,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:45:55,032 INFO L93 Difference]: Finished difference Result 1364 states and 1695 transitions. [2021-11-13 17:45:55,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 17:45:55,033 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 780 [2021-11-13 17:45:55,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:45:55,045 INFO L225 Difference]: With dead ends: 1364 [2021-11-13 17:45:55,045 INFO L226 Difference]: Without dead ends: 1363 [2021-11-13 17:45:55,046 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 780 GetRequests, 777 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-13 17:45:55,047 INFO L933 BasicCegarLoop]: 266 mSDtfsCounter, 109 mSDsluCounter, 304 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 34.17ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 570 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.59ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 41.20ms IncrementalHoareTripleChecker+Time [2021-11-13 17:45:55,048 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [119 Valid, 570 Invalid, 40 Unknown, 0 Unchecked, 2.59ms Time], IncrementalHoareTripleChecker [2 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 41.20ms Time] [2021-11-13 17:45:55,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1363 states. [2021-11-13 17:45:55,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1363 to 1340. [2021-11-13 17:45:55,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1340 states, 1282 states have (on average 1.1957878315132606) internal successors, (1533), 1294 states have internal predecessors, (1533), 52 states have call successors, (52), 3 states have call predecessors, (52), 4 states have return successors, (66), 43 states have call predecessors, (66), 52 states have call successors, (66) [2021-11-13 17:45:55,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1340 states to 1340 states and 1651 transitions. [2021-11-13 17:45:55,128 INFO L78 Accepts]: Start accepts. Automaton has 1340 states and 1651 transitions. Word has length 780 [2021-11-13 17:45:55,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:45:55,130 INFO L470 AbstractCegarLoop]: Abstraction has 1340 states and 1651 transitions. [2021-11-13 17:45:55,130 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2021-11-13 17:45:55,130 INFO L276 IsEmpty]: Start isEmpty. Operand 1340 states and 1651 transitions. [2021-11-13 17:45:55,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 782 [2021-11-13 17:45:55,143 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:45:55,143 INFO L514 BasicCegarLoop]: trace histogram [30, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:45:55,191 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16c2a965-cc25-4b34-9ab1-44d2da4aa583/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2021-11-13 17:45:55,371 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16c2a965-cc25-4b34-9ab1-44d2da4aa583/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-11-13 17:45:55,371 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-13 17:45:55,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:45:55,372 INFO L85 PathProgramCache]: Analyzing trace with hash -1447065975, now seen corresponding path program 1 times [2021-11-13 17:45:55,372 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:45:55,372 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709522410] [2021-11-13 17:45:55,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:45:55,373 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:45:55,431 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-13 17:45:55,431 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [566335266] [2021-11-13 17:45:55,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:45:55,432 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 17:45:55,432 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16c2a965-cc25-4b34-9ab1-44d2da4aa583/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 17:45:55,433 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16c2a965-cc25-4b34-9ab1-44d2da4aa583/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 17:45:55,447 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16c2a965-cc25-4b34-9ab1-44d2da4aa583/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-11-13 17:45:56,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:45:56,129 INFO L263 TraceCheckSpWp]: Trace formula consists of 2199 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-13 17:45:56,148 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:45:58,629 INFO L134 CoverageAnalysis]: Checked inductivity of 2704 backedges. 0 proven. 2125 refuted. 0 times theorem prover too weak. 579 trivial. 0 not checked. [2021-11-13 17:45:58,629 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:46:01,026 INFO L134 CoverageAnalysis]: Checked inductivity of 2704 backedges. 0 proven. 2125 refuted. 0 times theorem prover too weak. 579 trivial. 0 not checked. [2021-11-13 17:46:01,027 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:46:01,027 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709522410] [2021-11-13 17:46:01,027 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-13 17:46:01,027 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [566335266] [2021-11-13 17:46:01,028 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [566335266] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 17:46:01,028 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-13 17:46:01,029 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 21 [2021-11-13 17:46:01,029 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476236935] [2021-11-13 17:46:01,029 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-13 17:46:01,032 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-11-13 17:46:01,032 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:46:01,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-11-13 17:46:01,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=300, Unknown=0, NotChecked=0, Total=420 [2021-11-13 17:46:01,034 INFO L87 Difference]: Start difference. First operand 1340 states and 1651 transitions. Second operand has 21 states, 21 states have (on average 45.57142857142857) internal successors, (957), 21 states have internal predecessors, (957), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-11-13 17:46:01,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:46:01,698 INFO L93 Difference]: Finished difference Result 1924 states and 2380 transitions. [2021-11-13 17:46:01,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-13 17:46:01,699 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 45.57142857142857) internal successors, (957), 21 states have internal predecessors, (957), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 781 [2021-11-13 17:46:01,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:46:01,715 INFO L225 Difference]: With dead ends: 1924 [2021-11-13 17:46:01,715 INFO L226 Difference]: Without dead ends: 1889 [2021-11-13 17:46:01,718 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1569 GetRequests, 1540 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=273, Invalid=597, Unknown=0, NotChecked=0, Total=870 [2021-11-13 17:46:01,719 INFO L933 BasicCegarLoop]: 403 mSDtfsCounter, 2604 mSDsluCounter, 4507 mSDsCounter, 0 mSdLazyCounter, 264 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 272.37ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2656 SdHoareTripleChecker+Valid, 4910 SdHoareTripleChecker+Invalid, 348 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 20.12ms SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 264 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 324.45ms IncrementalHoareTripleChecker+Time [2021-11-13 17:46:01,719 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2656 Valid, 4910 Invalid, 348 Unknown, 0 Unchecked, 20.12ms Time], IncrementalHoareTripleChecker [84 Valid, 264 Invalid, 0 Unknown, 0 Unchecked, 324.45ms Time] [2021-11-13 17:46:01,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1889 states. [2021-11-13 17:46:01,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1889 to 1889. [2021-11-13 17:46:01,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1889 states, 1813 states have (on average 1.193050193050193) internal successors, (2163), 1825 states have internal predecessors, (2163), 70 states have call successors, (70), 3 states have call predecessors, (70), 4 states have return successors, (90), 61 states have call predecessors, (90), 70 states have call successors, (90) [2021-11-13 17:46:01,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1889 states to 1889 states and 2323 transitions. [2021-11-13 17:46:01,828 INFO L78 Accepts]: Start accepts. Automaton has 1889 states and 2323 transitions. Word has length 781 [2021-11-13 17:46:01,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:46:01,830 INFO L470 AbstractCegarLoop]: Abstraction has 1889 states and 2323 transitions. [2021-11-13 17:46:01,831 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 45.57142857142857) internal successors, (957), 21 states have internal predecessors, (957), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-11-13 17:46:01,831 INFO L276 IsEmpty]: Start isEmpty. Operand 1889 states and 2323 transitions. [2021-11-13 17:46:01,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1088 [2021-11-13 17:46:01,853 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:46:01,854 INFO L514 BasicCegarLoop]: trace histogram [30, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:46:01,895 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16c2a965-cc25-4b34-9ab1-44d2da4aa583/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2021-11-13 17:46:02,070 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16c2a965-cc25-4b34-9ab1-44d2da4aa583/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-11-13 17:46:02,071 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-13 17:46:02,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:46:02,071 INFO L85 PathProgramCache]: Analyzing trace with hash 1609819598, now seen corresponding path program 2 times [2021-11-13 17:46:02,072 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:46:02,072 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384192192] [2021-11-13 17:46:02,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:46:02,072 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:46:02,129 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-13 17:46:02,129 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [674006863] [2021-11-13 17:46:02,129 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-13 17:46:02,129 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 17:46:02,130 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16c2a965-cc25-4b34-9ab1-44d2da4aa583/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 17:46:02,143 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16c2a965-cc25-4b34-9ab1-44d2da4aa583/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 17:46:02,145 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16c2a965-cc25-4b34-9ab1-44d2da4aa583/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-11-13 17:46:02,519 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-13 17:46:02,520 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 17:46:02,523 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 17:46:02,548 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:46:05,592 INFO L134 CoverageAnalysis]: Checked inductivity of 5143 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5143 trivial. 0 not checked. [2021-11-13 17:46:05,593 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-13 17:46:05,593 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:46:05,593 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [384192192] [2021-11-13 17:46:05,593 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-13 17:46:05,594 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [674006863] [2021-11-13 17:46:05,594 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [674006863] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:46:05,594 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:46:05,595 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-13 17:46:05,595 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112616659] [2021-11-13 17:46:05,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:46:05,596 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 17:46:05,597 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:46:05,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 17:46:05,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-13 17:46:05,598 INFO L87 Difference]: Start difference. First operand 1889 states and 2323 transitions. Second operand has 4 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2021-11-13 17:46:05,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:46:05,710 INFO L93 Difference]: Finished difference Result 1889 states and 2323 transitions. [2021-11-13 17:46:05,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 17:46:05,711 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 1087 [2021-11-13 17:46:05,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:46:05,728 INFO L225 Difference]: With dead ends: 1889 [2021-11-13 17:46:05,728 INFO L226 Difference]: Without dead ends: 1888 [2021-11-13 17:46:05,730 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1087 GetRequests, 1084 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-13 17:46:05,730 INFO L933 BasicCegarLoop]: 245 mSDtfsCounter, 144 mSDsluCounter, 233 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 41.21ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 478 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.14ms SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 51.32ms IncrementalHoareTripleChecker+Time [2021-11-13 17:46:05,731 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [144 Valid, 478 Invalid, 46 Unknown, 0 Unchecked, 2.14ms Time], IncrementalHoareTripleChecker [22 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 51.32ms Time] [2021-11-13 17:46:05,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1888 states. [2021-11-13 17:46:05,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1888 to 1888. [2021-11-13 17:46:05,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1888 states, 1813 states have (on average 1.1924986210700497) internal successors, (2162), 1824 states have internal predecessors, (2162), 70 states have call successors, (70), 3 states have call predecessors, (70), 4 states have return successors, (90), 61 states have call predecessors, (90), 70 states have call successors, (90) [2021-11-13 17:46:05,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1888 states to 1888 states and 2322 transitions. [2021-11-13 17:46:05,831 INFO L78 Accepts]: Start accepts. Automaton has 1888 states and 2322 transitions. Word has length 1087 [2021-11-13 17:46:05,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:46:05,833 INFO L470 AbstractCegarLoop]: Abstraction has 1888 states and 2322 transitions. [2021-11-13 17:46:05,834 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2021-11-13 17:46:05,834 INFO L276 IsEmpty]: Start isEmpty. Operand 1888 states and 2322 transitions. [2021-11-13 17:46:05,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1099 [2021-11-13 17:46:05,855 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:46:05,856 INFO L514 BasicCegarLoop]: trace histogram [30, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:46:05,898 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16c2a965-cc25-4b34-9ab1-44d2da4aa583/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2021-11-13 17:46:06,079 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16c2a965-cc25-4b34-9ab1-44d2da4aa583/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 17:46:06,079 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-13 17:46:06,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:46:06,080 INFO L85 PathProgramCache]: Analyzing trace with hash -1770147853, now seen corresponding path program 1 times [2021-11-13 17:46:06,080 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:46:06,080 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375988228] [2021-11-13 17:46:06,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:46:06,081 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:46:06,152 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-13 17:46:06,153 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1103321345] [2021-11-13 17:46:06,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:46:06,153 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 17:46:06,154 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16c2a965-cc25-4b34-9ab1-44d2da4aa583/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 17:46:06,159 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16c2a965-cc25-4b34-9ab1-44d2da4aa583/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 17:46:06,164 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16c2a965-cc25-4b34-9ab1-44d2da4aa583/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2021-11-13 17:46:06,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:46:06,989 INFO L263 TraceCheckSpWp]: Trace formula consists of 2984 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-13 17:46:07,013 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:46:10,028 INFO L134 CoverageAnalysis]: Checked inductivity of 5145 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 5143 trivial. 0 not checked. [2021-11-13 17:46:10,028 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:46:13,004 INFO L134 CoverageAnalysis]: Checked inductivity of 5145 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 5143 trivial. 0 not checked. [2021-11-13 17:46:13,005 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:46:13,005 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375988228] [2021-11-13 17:46:13,005 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-13 17:46:13,005 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1103321345] [2021-11-13 17:46:13,006 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1103321345] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 17:46:13,006 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-13 17:46:13,007 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5] total 9 [2021-11-13 17:46:13,007 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507932910] [2021-11-13 17:46:13,007 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-13 17:46:13,010 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-13 17:46:13,010 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:46:13,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-13 17:46:13,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-11-13 17:46:13,011 INFO L87 Difference]: Start difference. First operand 1888 states and 2322 transitions. Second operand has 10 states, 9 states have (on average 30.666666666666668) internal successors, (276), 10 states have internal predecessors, (276), 4 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2021-11-13 17:46:13,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:46:13,516 INFO L93 Difference]: Finished difference Result 1980 states and 2473 transitions. [2021-11-13 17:46:13,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-13 17:46:13,517 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 30.666666666666668) internal successors, (276), 10 states have internal predecessors, (276), 4 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) Word has length 1098 [2021-11-13 17:46:13,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:46:13,538 INFO L225 Difference]: With dead ends: 1980 [2021-11-13 17:46:13,539 INFO L226 Difference]: Without dead ends: 1979 [2021-11-13 17:46:13,540 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2201 GetRequests, 2186 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=99, Invalid=173, Unknown=0, NotChecked=0, Total=272 [2021-11-13 17:46:13,542 INFO L933 BasicCegarLoop]: 256 mSDtfsCounter, 555 mSDsluCounter, 600 mSDsCounter, 0 mSdLazyCounter, 240 mSolverCounterSat, 123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 296.98ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 565 SdHoareTripleChecker+Valid, 856 SdHoareTripleChecker+Invalid, 363 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.96ms SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 360.52ms IncrementalHoareTripleChecker+Time [2021-11-13 17:46:13,543 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [565 Valid, 856 Invalid, 363 Unknown, 0 Unchecked, 5.96ms Time], IncrementalHoareTripleChecker [123 Valid, 240 Invalid, 0 Unknown, 0 Unchecked, 360.52ms Time] [2021-11-13 17:46:13,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1979 states. [2021-11-13 17:46:13,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1979 to 1978. [2021-11-13 17:46:13,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1978 states, 1870 states have (on average 1.2026737967914438) internal successors, (2249), 1911 states have internal predecessors, (2249), 100 states have call successors, (100), 6 states have call predecessors, (100), 7 states have return successors, (120), 64 states have call predecessors, (120), 100 states have call successors, (120) [2021-11-13 17:46:13,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1978 states to 1978 states and 2469 transitions. [2021-11-13 17:46:13,696 INFO L78 Accepts]: Start accepts. Automaton has 1978 states and 2469 transitions. Word has length 1098 [2021-11-13 17:46:13,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:46:13,698 INFO L470 AbstractCegarLoop]: Abstraction has 1978 states and 2469 transitions. [2021-11-13 17:46:13,699 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 30.666666666666668) internal successors, (276), 10 states have internal predecessors, (276), 4 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2021-11-13 17:46:13,699 INFO L276 IsEmpty]: Start isEmpty. Operand 1978 states and 2469 transitions. [2021-11-13 17:46:13,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1135 [2021-11-13 17:46:13,724 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:46:13,725 INFO L514 BasicCegarLoop]: trace histogram [30, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:46:13,764 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16c2a965-cc25-4b34-9ab1-44d2da4aa583/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2021-11-13 17:46:13,943 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16c2a965-cc25-4b34-9ab1-44d2da4aa583/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 17:46:13,943 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-13 17:46:13,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:46:13,944 INFO L85 PathProgramCache]: Analyzing trace with hash 1870153839, now seen corresponding path program 2 times [2021-11-13 17:46:13,944 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:46:13,944 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1360108854] [2021-11-13 17:46:13,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:46:13,945 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:46:13,992 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-13 17:46:13,992 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1348300950] [2021-11-13 17:46:13,993 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-13 17:46:13,993 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 17:46:13,993 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16c2a965-cc25-4b34-9ab1-44d2da4aa583/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 17:46:13,999 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16c2a965-cc25-4b34-9ab1-44d2da4aa583/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 17:46:14,015 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16c2a965-cc25-4b34-9ab1-44d2da4aa583/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2021-11-13 17:46:14,824 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-13 17:46:14,824 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 17:46:14,847 INFO L263 TraceCheckSpWp]: Trace formula consists of 3092 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-13 17:46:14,867 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:46:18,090 INFO L134 CoverageAnalysis]: Checked inductivity of 5223 backedges. 0 proven. 80 refuted. 0 times theorem prover too weak. 5143 trivial. 0 not checked. [2021-11-13 17:46:18,091 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:46:21,459 INFO L134 CoverageAnalysis]: Checked inductivity of 5223 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 5167 trivial. 0 not checked. [2021-11-13 17:46:21,459 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:46:21,459 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1360108854] [2021-11-13 17:46:21,459 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-13 17:46:21,459 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1348300950] [2021-11-13 17:46:21,460 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1348300950] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 17:46:21,460 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-13 17:46:21,460 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11] total 21 [2021-11-13 17:46:21,461 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302691601] [2021-11-13 17:46:21,461 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-13 17:46:21,463 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-11-13 17:46:21,463 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:46:21,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-11-13 17:46:21,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=331, Unknown=0, NotChecked=0, Total=462 [2021-11-13 17:46:21,464 INFO L87 Difference]: Start difference. First operand 1978 states and 2469 transitions. Second operand has 22 states, 21 states have (on average 15.571428571428571) internal successors, (327), 22 states have internal predecessors, (327), 10 states have call successors, (16), 6 states have call predecessors, (16), 6 states have return successors, (16), 10 states have call predecessors, (16), 10 states have call successors, (16) [2021-11-13 17:46:22,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:46:22,826 INFO L93 Difference]: Finished difference Result 2160 states and 2770 transitions. [2021-11-13 17:46:22,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-11-13 17:46:22,827 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 15.571428571428571) internal successors, (327), 22 states have internal predecessors, (327), 10 states have call successors, (16), 6 states have call predecessors, (16), 6 states have return successors, (16), 10 states have call predecessors, (16), 10 states have call successors, (16) Word has length 1134 [2021-11-13 17:46:22,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:46:22,845 INFO L225 Difference]: With dead ends: 2160 [2021-11-13 17:46:22,845 INFO L226 Difference]: Without dead ends: 2159 [2021-11-13 17:46:22,848 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2285 GetRequests, 2246 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 289 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=549, Invalid=1091, Unknown=0, NotChecked=0, Total=1640 [2021-11-13 17:46:22,849 INFO L933 BasicCegarLoop]: 256 mSDtfsCounter, 1112 mSDsluCounter, 1267 mSDsCounter, 0 mSdLazyCounter, 858 mSolverCounterSat, 397 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 747.30ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1122 SdHoareTripleChecker+Valid, 1523 SdHoareTripleChecker+Invalid, 1255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 12.08ms SdHoareTripleChecker+Time, 397 IncrementalHoareTripleChecker+Valid, 858 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 962.17ms IncrementalHoareTripleChecker+Time [2021-11-13 17:46:22,850 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1122 Valid, 1523 Invalid, 1255 Unknown, 0 Unchecked, 12.08ms Time], IncrementalHoareTripleChecker [397 Valid, 858 Invalid, 0 Unknown, 0 Unchecked, 962.17ms Time] [2021-11-13 17:46:22,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2159 states. [2021-11-13 17:46:22,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2159 to 2158. [2021-11-13 17:46:22,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2158 states, 1984 states have (on average 1.2212701612903225) internal successors, (2423), 2085 states have internal predecessors, (2423), 160 states have call successors, (160), 12 states have call predecessors, (160), 13 states have return successors, (180), 70 states have call predecessors, (180), 160 states have call successors, (180) [2021-11-13 17:46:22,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2158 states to 2158 states and 2763 transitions. [2021-11-13 17:46:22,975 INFO L78 Accepts]: Start accepts. Automaton has 2158 states and 2763 transitions. Word has length 1134 [2021-11-13 17:46:22,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:46:22,977 INFO L470 AbstractCegarLoop]: Abstraction has 2158 states and 2763 transitions. [2021-11-13 17:46:22,978 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 15.571428571428571) internal successors, (327), 22 states have internal predecessors, (327), 10 states have call successors, (16), 6 states have call predecessors, (16), 6 states have return successors, (16), 10 states have call predecessors, (16), 10 states have call successors, (16) [2021-11-13 17:46:22,978 INFO L276 IsEmpty]: Start isEmpty. Operand 2158 states and 2763 transitions. [2021-11-13 17:46:23,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1207 [2021-11-13 17:46:23,003 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:46:23,004 INFO L514 BasicCegarLoop]: trace histogram [30, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:46:23,055 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16c2a965-cc25-4b34-9ab1-44d2da4aa583/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2021-11-13 17:46:23,219 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16c2a965-cc25-4b34-9ab1-44d2da4aa583/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2021-11-13 17:46:23,220 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)] === [2021-11-13 17:46:23,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:46:23,221 INFO L85 PathProgramCache]: Analyzing trace with hash -398995609, now seen corresponding path program 3 times [2021-11-13 17:46:23,221 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:46:23,221 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581243048] [2021-11-13 17:46:23,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:46:23,222 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:46:23,296 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-13 17:46:23,296 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [916344736] [2021-11-13 17:46:23,296 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-13 17:46:23,297 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 17:46:23,297 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16c2a965-cc25-4b34-9ab1-44d2da4aa583/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 17:46:23,298 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16c2a965-cc25-4b34-9ab1-44d2da4aa583/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 17:46:23,319 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16c2a965-cc25-4b34-9ab1-44d2da4aa583/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2021-11-13 17:46:23,714 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-13 17:46:23,714 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 17:46:23,719 INFO L263 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-13 17:46:23,778 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:46:25,863 INFO L134 CoverageAnalysis]: Checked inductivity of 5703 backedges. 101 proven. 0 refuted. 0 times theorem prover too weak. 5602 trivial. 0 not checked. [2021-11-13 17:46:25,864 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-13 17:46:25,864 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:46:25,864 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [581243048] [2021-11-13 17:46:25,864 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-13 17:46:25,865 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [916344736] [2021-11-13 17:46:25,865 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [916344736] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:46:25,865 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:46:25,866 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-13 17:46:25,866 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074047496] [2021-11-13 17:46:25,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:46:25,869 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 17:46:25,869 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:46:25,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 17:46:25,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-13 17:46:25,871 INFO L87 Difference]: Start difference. First operand 2158 states and 2763 transitions. Second operand has 5 states, 4 states have (on average 36.5) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-11-13 17:46:26,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:46:26,118 INFO L93 Difference]: Finished difference Result 2475 states and 3250 transitions. [2021-11-13 17:46:26,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-13 17:46:26,119 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 36.5) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 1206 [2021-11-13 17:46:26,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:46:26,141 INFO L225 Difference]: With dead ends: 2475 [2021-11-13 17:46:26,142 INFO L226 Difference]: Without dead ends: 2474 [2021-11-13 17:46:26,144 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1209 GetRequests, 1204 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-11-13 17:46:26,146 INFO L933 BasicCegarLoop]: 247 mSDtfsCounter, 249 mSDsluCounter, 316 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 99.96ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 250 SdHoareTripleChecker+Valid, 563 SdHoareTripleChecker+Invalid, 128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.56ms SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 119.90ms IncrementalHoareTripleChecker+Time [2021-11-13 17:46:26,146 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [250 Valid, 563 Invalid, 128 Unknown, 0 Unchecked, 2.56ms Time], IncrementalHoareTripleChecker [49 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 119.90ms Time] [2021-11-13 17:46:26,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2474 states. [2021-11-13 17:46:26,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2474 to 2401. [2021-11-13 17:46:26,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2401 states, 2155 states have (on average 1.245475638051044) internal successors, (2684), 2310 states have internal predecessors, (2684), 223 states have call successors, (223), 21 states have call predecessors, (223), 22 states have return successors, (243), 79 states have call predecessors, (243), 223 states have call successors, (243) [2021-11-13 17:46:26,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2401 states to 2401 states and 3150 transitions. [2021-11-13 17:46:26,366 INFO L78 Accepts]: Start accepts. Automaton has 2401 states and 3150 transitions. Word has length 1206 [2021-11-13 17:46:26,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:46:26,371 INFO L470 AbstractCegarLoop]: Abstraction has 2401 states and 3150 transitions. [2021-11-13 17:46:26,373 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 36.5) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-11-13 17:46:26,373 INFO L276 IsEmpty]: Start isEmpty. Operand 2401 states and 3150 transitions. [2021-11-13 17:46:26,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1208 [2021-11-13 17:46:26,402 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:46:26,403 INFO L514 BasicCegarLoop]: trace histogram [30, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:46:26,441 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16c2a965-cc25-4b34-9ab1-44d2da4aa583/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2021-11-13 17:46:26,623 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16c2a965-cc25-4b34-9ab1-44d2da4aa583/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 17:46:26,623 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-13 17:46:26,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:46:26,624 INFO L85 PathProgramCache]: Analyzing trace with hash 1713715562, now seen corresponding path program 1 times [2021-11-13 17:46:26,624 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:46:26,624 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [283704621] [2021-11-13 17:46:26,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:46:26,625 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:46:26,672 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-13 17:46:26,672 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1748048250] [2021-11-13 17:46:26,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:46:26,673 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 17:46:26,673 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16c2a965-cc25-4b34-9ab1-44d2da4aa583/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 17:46:26,674 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16c2a965-cc25-4b34-9ab1-44d2da4aa583/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 17:46:26,676 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16c2a965-cc25-4b34-9ab1-44d2da4aa583/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2021-11-13 17:46:27,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:46:27,614 INFO L263 TraceCheckSpWp]: Trace formula consists of 3310 conjuncts, 23 conjunts are in the unsatisfiable core [2021-11-13 17:46:27,634 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:46:31,297 INFO L134 CoverageAnalysis]: Checked inductivity of 5694 backedges. 0 proven. 551 refuted. 0 times theorem prover too weak. 5143 trivial. 0 not checked. [2021-11-13 17:46:31,297 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:46:35,222 INFO L134 CoverageAnalysis]: Checked inductivity of 5694 backedges. 0 proven. 371 refuted. 0 times theorem prover too weak. 5323 trivial. 0 not checked. [2021-11-13 17:46:35,223 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:46:35,223 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [283704621] [2021-11-13 17:46:35,223 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-13 17:46:35,223 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1748048250] [2021-11-13 17:46:35,224 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1748048250] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 17:46:35,224 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-13 17:46:35,225 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 23] total 45 [2021-11-13 17:46:35,225 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278978839] [2021-11-13 17:46:35,226 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-13 17:46:35,228 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2021-11-13 17:46:35,228 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:46:35,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2021-11-13 17:46:35,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=551, Invalid=1519, Unknown=0, NotChecked=0, Total=2070 [2021-11-13 17:46:35,231 INFO L87 Difference]: Start difference. First operand 2401 states and 3150 transitions. Second operand has 46 states, 45 states have (on average 9.577777777777778) internal successors, (431), 46 states have internal predecessors, (431), 22 states have call successors, (28), 12 states have call predecessors, (28), 12 states have return successors, (28), 22 states have call predecessors, (28), 22 states have call successors, (28) [2021-11-13 17:46:39,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:46:39,489 INFO L93 Difference]: Finished difference Result 3118 states and 4318 transitions. [2021-11-13 17:46:39,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2021-11-13 17:46:39,490 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 45 states have (on average 9.577777777777778) internal successors, (431), 46 states have internal predecessors, (431), 22 states have call successors, (28), 12 states have call predecessors, (28), 12 states have return successors, (28), 22 states have call predecessors, (28), 22 states have call successors, (28) Word has length 1207 [2021-11-13 17:46:39,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:46:39,518 INFO L225 Difference]: With dead ends: 3118 [2021-11-13 17:46:39,518 INFO L226 Difference]: Without dead ends: 3117 [2021-11-13 17:46:39,523 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2455 GetRequests, 2368 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1615 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=2529, Invalid=5303, Unknown=0, NotChecked=0, Total=7832 [2021-11-13 17:46:39,524 INFO L933 BasicCegarLoop]: 256 mSDtfsCounter, 3022 mSDsluCounter, 1592 mSDsCounter, 0 mSdLazyCounter, 2176 mSolverCounterSat, 1341 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2147.82ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3032 SdHoareTripleChecker+Valid, 1848 SdHoareTripleChecker+Invalid, 3517 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 29.36ms SdHoareTripleChecker+Time, 1341 IncrementalHoareTripleChecker+Valid, 2176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2621.19ms IncrementalHoareTripleChecker+Time [2021-11-13 17:46:39,525 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3032 Valid, 1848 Invalid, 3517 Unknown, 0 Unchecked, 29.36ms Time], IncrementalHoareTripleChecker [1341 Valid, 2176 Invalid, 0 Unknown, 0 Unchecked, 2621.19ms Time] [2021-11-13 17:46:39,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3117 states. [2021-11-13 17:46:39,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3117 to 3097. [2021-11-13 17:46:39,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3097 states, 2611 states have (on average 1.2945231711987744) internal successors, (3380), 2970 states have internal predecessors, (3380), 439 states have call successors, (439), 45 states have call predecessors, (439), 46 states have return successors, (459), 103 states have call predecessors, (459), 439 states have call successors, (459) [2021-11-13 17:46:39,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3097 states to 3097 states and 4278 transitions. [2021-11-13 17:46:39,748 INFO L78 Accepts]: Start accepts. Automaton has 3097 states and 4278 transitions. Word has length 1207 [2021-11-13 17:46:39,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:46:39,750 INFO L470 AbstractCegarLoop]: Abstraction has 3097 states and 4278 transitions. [2021-11-13 17:46:39,750 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 45 states have (on average 9.577777777777778) internal successors, (431), 46 states have internal predecessors, (431), 22 states have call successors, (28), 12 states have call predecessors, (28), 12 states have return successors, (28), 22 states have call predecessors, (28), 22 states have call successors, (28) [2021-11-13 17:46:39,751 INFO L276 IsEmpty]: Start isEmpty. Operand 3097 states and 4278 transitions. [2021-11-13 17:46:39,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1352 [2021-11-13 17:46:39,786 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:46:39,787 INFO L514 BasicCegarLoop]: trace histogram [30, 23, 22, 22, 22, 22, 22, 22, 22, 22, 21, 21, 21, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:46:39,841 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16c2a965-cc25-4b34-9ab1-44d2da4aa583/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2021-11-13 17:46:40,003 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16c2a965-cc25-4b34-9ab1-44d2da4aa583/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 17:46:40,004 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-13 17:46:40,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:46:40,004 INFO L85 PathProgramCache]: Analyzing trace with hash 1684377978, now seen corresponding path program 2 times [2021-11-13 17:46:40,005 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:46:40,005 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [758387874] [2021-11-13 17:46:40,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:46:40,005 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:46:40,080 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-13 17:46:40,080 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2065399560] [2021-11-13 17:46:40,083 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-13 17:46:40,083 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 17:46:40,085 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16c2a965-cc25-4b34-9ab1-44d2da4aa583/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 17:46:40,086 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16c2a965-cc25-4b34-9ab1-44d2da4aa583/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 17:46:40,107 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16c2a965-cc25-4b34-9ab1-44d2da4aa583/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2021-11-13 17:46:41,217 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-13 17:46:41,218 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 17:46:41,245 INFO L263 TraceCheckSpWp]: Trace formula consists of 3742 conjuncts, 47 conjunts are in the unsatisfiable core [2021-11-13 17:46:41,269 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:46:45,903 INFO L134 CoverageAnalysis]: Checked inductivity of 7938 backedges. 0 proven. 2795 refuted. 0 times theorem prover too weak. 5143 trivial. 0 not checked. [2021-11-13 17:46:45,903 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:46:51,275 INFO L134 CoverageAnalysis]: Checked inductivity of 7938 backedges. 0 proven. 1871 refuted. 0 times theorem prover too weak. 6067 trivial. 0 not checked. [2021-11-13 17:46:51,275 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:46:51,275 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [758387874] [2021-11-13 17:46:51,275 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-13 17:46:51,276 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2065399560] [2021-11-13 17:46:51,276 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2065399560] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 17:46:51,276 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-13 17:46:51,277 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 47] total 93 [2021-11-13 17:46:51,277 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240583684] [2021-11-13 17:46:51,277 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-13 17:46:51,280 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 94 states [2021-11-13 17:46:51,280 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:46:51,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2021-11-13 17:46:51,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2255, Invalid=6487, Unknown=0, NotChecked=0, Total=8742 [2021-11-13 17:46:51,285 INFO L87 Difference]: Start difference. First operand 3097 states and 4278 transitions. Second operand has 94 states, 93 states have (on average 6.827956989247312) internal successors, (635), 94 states have internal predecessors, (635), 46 states have call successors, (52), 24 states have call predecessors, (52), 24 states have return successors, (52), 46 states have call predecessors, (52), 46 states have call successors, (52) [2021-11-13 17:47:02,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:47:02,766 INFO L93 Difference]: Finished difference Result 4510 states and 6586 transitions. [2021-11-13 17:47:02,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 140 states. [2021-11-13 17:47:02,768 INFO L78 Accepts]: Start accepts. Automaton has has 94 states, 93 states have (on average 6.827956989247312) internal successors, (635), 94 states have internal predecessors, (635), 46 states have call successors, (52), 24 states have call predecessors, (52), 24 states have return successors, (52), 46 states have call predecessors, (52), 46 states have call successors, (52) Word has length 1351 [2021-11-13 17:47:02,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:47:02,808 INFO L225 Difference]: With dead ends: 4510 [2021-11-13 17:47:02,808 INFO L226 Difference]: Without dead ends: 4509 [2021-11-13 17:47:02,823 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2791 GetRequests, 2608 SyntacticMatches, 0 SemanticMatches, 183 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7507 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=10809, Invalid=23231, Unknown=0, NotChecked=0, Total=34040 [2021-11-13 17:47:02,823 INFO L933 BasicCegarLoop]: 256 mSDtfsCounter, 9105 mSDsluCounter, 2031 mSDsCounter, 0 mSdLazyCounter, 5090 mSolverCounterSat, 4625 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4584.02ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 9115 SdHoareTripleChecker+Valid, 2287 SdHoareTripleChecker+Invalid, 9715 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 54.78ms SdHoareTripleChecker+Time, 4625 IncrementalHoareTripleChecker+Valid, 5090 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5604.24ms IncrementalHoareTripleChecker+Time [2021-11-13 17:47:02,824 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9115 Valid, 2287 Invalid, 9715 Unknown, 0 Unchecked, 54.78ms Time], IncrementalHoareTripleChecker [4625 Valid, 5090 Invalid, 0 Unknown, 0 Unchecked, 5604.24ms Time] [2021-11-13 17:47:02,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4509 states. [2021-11-13 17:47:03,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4509 to 4489. [2021-11-13 17:47:03,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4489 states, 3523 states have (on average 1.3545273914277605) internal successors, (4772), 4290 states have internal predecessors, (4772), 871 states have call successors, (871), 93 states have call predecessors, (871), 94 states have return successors, (891), 151 states have call predecessors, (891), 871 states have call successors, (891) [2021-11-13 17:47:03,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4489 states to 4489 states and 6534 transitions. [2021-11-13 17:47:03,269 INFO L78 Accepts]: Start accepts. Automaton has 4489 states and 6534 transitions. Word has length 1351 [2021-11-13 17:47:03,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:47:03,271 INFO L470 AbstractCegarLoop]: Abstraction has 4489 states and 6534 transitions. [2021-11-13 17:47:03,271 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 94 states, 93 states have (on average 6.827956989247312) internal successors, (635), 94 states have internal predecessors, (635), 46 states have call successors, (52), 24 states have call predecessors, (52), 24 states have return successors, (52), 46 states have call predecessors, (52), 46 states have call successors, (52) [2021-11-13 17:47:03,272 INFO L276 IsEmpty]: Start isEmpty. Operand 4489 states and 6534 transitions. [2021-11-13 17:47:03,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1640 [2021-11-13 17:47:03,320 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:47:03,321 INFO L514 BasicCegarLoop]: trace histogram [47, 46, 46, 46, 46, 46, 46, 46, 46, 45, 45, 45, 30, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:47:03,369 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16c2a965-cc25-4b34-9ab1-44d2da4aa583/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2021-11-13 17:47:03,535 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16c2a965-cc25-4b34-9ab1-44d2da4aa583/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2021-11-13 17:47:03,535 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-13 17:47:03,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:47:03,536 INFO L85 PathProgramCache]: Analyzing trace with hash 1262281114, now seen corresponding path program 3 times [2021-11-13 17:47:03,537 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:47:03,537 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173649218] [2021-11-13 17:47:03,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:47:03,537 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:47:03,623 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-13 17:47:03,624 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [771302057] [2021-11-13 17:47:03,624 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-13 17:47:03,624 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 17:47:03,625 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16c2a965-cc25-4b34-9ab1-44d2da4aa583/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 17:47:03,626 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16c2a965-cc25-4b34-9ab1-44d2da4aa583/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 17:47:03,654 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16c2a965-cc25-4b34-9ab1-44d2da4aa583/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2021-11-13 17:47:04,108 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-13 17:47:04,108 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 17:47:04,113 INFO L263 TraceCheckSpWp]: Trace formula consists of 346 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-13 17:47:04,131 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:47:06,589 INFO L134 CoverageAnalysis]: Checked inductivity of 17610 backedges. 452 proven. 0 refuted. 0 times theorem prover too weak. 17158 trivial. 0 not checked. [2021-11-13 17:47:06,589 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-13 17:47:06,589 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:47:06,589 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [173649218] [2021-11-13 17:47:06,590 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-13 17:47:06,590 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [771302057] [2021-11-13 17:47:06,590 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [771302057] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:47:06,590 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:47:06,591 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-13 17:47:06,591 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278993847] [2021-11-13 17:47:06,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:47:06,593 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 17:47:06,593 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:47:06,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 17:47:06,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-13 17:47:06,594 INFO L87 Difference]: Start difference. First operand 4489 states and 6534 transitions. Second operand has 6 states, 5 states have (on average 29.4) internal successors, (147), 6 states have internal predecessors, (147), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-11-13 17:47:07,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:47:07,199 INFO L93 Difference]: Finished difference Result 7364 states and 11020 transitions. [2021-11-13 17:47:07,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-13 17:47:07,200 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 29.4) internal successors, (147), 6 states have internal predecessors, (147), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 1639 [2021-11-13 17:47:07,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:47:07,232 INFO L225 Difference]: With dead ends: 7364 [2021-11-13 17:47:07,232 INFO L226 Difference]: Without dead ends: 7363 [2021-11-13 17:47:07,237 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1647 GetRequests, 1638 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2021-11-13 17:47:07,238 INFO L933 BasicCegarLoop]: 244 mSDtfsCounter, 282 mSDsluCounter, 472 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 176.66ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 290 SdHoareTripleChecker+Valid, 716 SdHoareTripleChecker+Invalid, 231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.93ms SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 210.83ms IncrementalHoareTripleChecker+Time [2021-11-13 17:47:07,238 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [290 Valid, 716 Invalid, 231 Unknown, 0 Unchecked, 2.93ms Time], IncrementalHoareTripleChecker [78 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 210.83ms Time] [2021-11-13 17:47:07,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7363 states. [2021-11-13 17:47:07,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7363 to 6900. [2021-11-13 17:47:07,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6900 states, 5230 states have (on average 1.4108986615678776) internal successors, (7379), 6522 states have internal predecessors, (7379), 1486 states have call successors, (1486), 182 states have call predecessors, (1486), 183 states have return successors, (1506), 240 states have call predecessors, (1506), 1486 states have call successors, (1506) [2021-11-13 17:47:07,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6900 states to 6900 states and 10371 transitions. [2021-11-13 17:47:07,841 INFO L78 Accepts]: Start accepts. Automaton has 6900 states and 10371 transitions. Word has length 1639 [2021-11-13 17:47:07,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:47:07,848 INFO L470 AbstractCegarLoop]: Abstraction has 6900 states and 10371 transitions. [2021-11-13 17:47:07,849 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 29.4) internal successors, (147), 6 states have internal predecessors, (147), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-11-13 17:47:07,849 INFO L276 IsEmpty]: Start isEmpty. Operand 6900 states and 10371 transitions. [2021-11-13 17:47:07,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1642 [2021-11-13 17:47:07,961 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:47:07,962 INFO L514 BasicCegarLoop]: trace histogram [47, 46, 46, 46, 46, 46, 46, 46, 46, 44, 44, 44, 30, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:47:08,003 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16c2a965-cc25-4b34-9ab1-44d2da4aa583/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2021-11-13 17:47:08,175 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16c2a965-cc25-4b34-9ab1-44d2da4aa583/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2021-11-13 17:47:08,175 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-13 17:47:08,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:47:08,176 INFO L85 PathProgramCache]: Analyzing trace with hash 667581920, now seen corresponding path program 1 times [2021-11-13 17:47:08,176 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:47:08,176 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487320837] [2021-11-13 17:47:08,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:47:08,177 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:47:08,233 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-13 17:47:08,233 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1137976543] [2021-11-13 17:47:08,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:47:08,234 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 17:47:08,234 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16c2a965-cc25-4b34-9ab1-44d2da4aa583/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 17:47:08,240 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16c2a965-cc25-4b34-9ab1-44d2da4aa583/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 17:47:08,242 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16c2a965-cc25-4b34-9ab1-44d2da4aa583/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2021-11-13 17:47:09,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:47:09,315 INFO L263 TraceCheckSpWp]: Trace formula consists of 4610 conjuncts, 95 conjunts are in the unsatisfiable core [2021-11-13 17:47:09,347 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:47:16,097 INFO L134 CoverageAnalysis]: Checked inductivity of 17567 backedges. 0 proven. 12424 refuted. 0 times theorem prover too weak. 5143 trivial. 0 not checked. [2021-11-13 17:47:16,098 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:47:27,353 INFO L134 CoverageAnalysis]: Checked inductivity of 17567 backedges. 0 proven. 8284 refuted. 0 times theorem prover too weak. 9283 trivial. 0 not checked. [2021-11-13 17:47:27,353 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:47:27,354 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487320837] [2021-11-13 17:47:27,354 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-13 17:47:27,354 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1137976543] [2021-11-13 17:47:27,354 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1137976543] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 17:47:27,355 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-13 17:47:27,356 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [94, 95] total 189 [2021-11-13 17:47:27,357 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362938384] [2021-11-13 17:47:27,357 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-13 17:47:27,362 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 190 states [2021-11-13 17:47:27,363 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:47:27,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 190 interpolants. [2021-11-13 17:47:27,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9119, Invalid=26791, Unknown=0, NotChecked=0, Total=35910 [2021-11-13 17:47:27,376 INFO L87 Difference]: Start difference. First operand 6900 states and 10371 transitions. Second operand has 190 states, 189 states have (on average 5.5396825396825395) internal successors, (1047), 190 states have internal predecessors, (1047), 94 states have call successors, (100), 48 states have call predecessors, (100), 48 states have return successors, (100), 94 states have call predecessors, (100), 94 states have call successors, (100) [2021-11-13 17:48:16,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:48:16,551 INFO L93 Difference]: Finished difference Result 12332 states and 19135 transitions. [2021-11-13 17:48:16,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 284 states. [2021-11-13 17:48:16,552 INFO L78 Accepts]: Start accepts. Automaton has has 190 states, 189 states have (on average 5.5396825396825395) internal successors, (1047), 190 states have internal predecessors, (1047), 94 states have call successors, (100), 48 states have call predecessors, (100), 48 states have return successors, (100), 94 states have call predecessors, (100), 94 states have call successors, (100) Word has length 1641 [2021-11-13 17:48:16,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:48:16,616 INFO L225 Difference]: With dead ends: 12332 [2021-11-13 17:48:16,616 INFO L226 Difference]: Without dead ends: 12331 [2021-11-13 17:48:16,643 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3467 GetRequests, 3092 SyntacticMatches, 0 SemanticMatches, 375 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32251 ImplicationChecksByTransitivity, 23.8s TimeCoverageRelationStatistics Valid=44649, Invalid=97103, Unknown=0, NotChecked=0, Total=141752 [2021-11-13 17:48:16,644 INFO L933 BasicCegarLoop]: 256 mSDtfsCounter, 18709 mSDsluCounter, 3630 mSDsCounter, 0 mSdLazyCounter, 11614 mSolverCounterSat, 10216 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9648.06ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 18719 SdHoareTripleChecker+Valid, 3886 SdHoareTripleChecker+Invalid, 21830 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 125.46ms SdHoareTripleChecker+Time, 10216 IncrementalHoareTripleChecker+Valid, 11614 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11963.24ms IncrementalHoareTripleChecker+Time [2021-11-13 17:48:16,644 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [18719 Valid, 3886 Invalid, 21830 Unknown, 0 Unchecked, 125.46ms Time], IncrementalHoareTripleChecker [10216 Valid, 11614 Invalid, 0 Unknown, 0 Unchecked, 11963.24ms Time] [2021-11-13 17:48:16,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12331 states. [2021-11-13 17:48:17,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12331 to 12276. [2021-11-13 17:48:17,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12276 states, 8878 states have (on average 1.4583239468348728) internal successors, (12947), 11562 states have internal predecessors, (12947), 3022 states have call successors, (3022), 374 states have call predecessors, (3022), 375 states have return successors, (3042), 432 states have call predecessors, (3042), 3022 states have call successors, (3042) [2021-11-13 17:48:17,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12276 states to 12276 states and 19011 transitions. [2021-11-13 17:48:17,821 INFO L78 Accepts]: Start accepts. Automaton has 12276 states and 19011 transitions. Word has length 1641 [2021-11-13 17:48:17,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:48:17,823 INFO L470 AbstractCegarLoop]: Abstraction has 12276 states and 19011 transitions. [2021-11-13 17:48:17,824 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 190 states, 189 states have (on average 5.5396825396825395) internal successors, (1047), 190 states have internal predecessors, (1047), 94 states have call successors, (100), 48 states have call predecessors, (100), 48 states have return successors, (100), 94 states have call predecessors, (100), 94 states have call successors, (100) [2021-11-13 17:48:17,824 INFO L276 IsEmpty]: Start isEmpty. Operand 12276 states and 19011 transitions. [2021-11-13 17:48:18,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2218 [2021-11-13 17:48:18,122 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:48:18,123 INFO L514 BasicCegarLoop]: trace histogram [95, 94, 94, 94, 94, 94, 94, 94, 94, 92, 92, 92, 30, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:48:18,182 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16c2a965-cc25-4b34-9ab1-44d2da4aa583/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2021-11-13 17:48:18,347 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16c2a965-cc25-4b34-9ab1-44d2da4aa583/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2021-11-13 17:48:18,348 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-13 17:48:18,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:48:18,351 INFO L85 PathProgramCache]: Analyzing trace with hash 1477217824, now seen corresponding path program 2 times [2021-11-13 17:48:18,351 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:48:18,352 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865919849] [2021-11-13 17:48:18,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:48:18,352 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:48:18,453 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-13 17:48:18,453 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1695942038] [2021-11-13 17:48:18,454 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-13 17:48:18,454 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 17:48:18,454 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16c2a965-cc25-4b34-9ab1-44d2da4aa583/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 17:48:18,455 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16c2a965-cc25-4b34-9ab1-44d2da4aa583/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 17:48:18,475 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16c2a965-cc25-4b34-9ab1-44d2da4aa583/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2021-11-13 17:48:19,933 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-13 17:48:19,934 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 17:48:19,978 INFO L263 TraceCheckSpWp]: Trace formula consists of 6338 conjuncts, 191 conjunts are in the unsatisfiable core [2021-11-13 17:48:20,007 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:48:37,681 INFO L134 CoverageAnalysis]: Checked inductivity of 57599 backedges. 0 proven. 52456 refuted. 0 times theorem prover too weak. 5143 trivial. 0 not checked. [2021-11-13 17:48:37,681 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:49:14,265 INFO L134 CoverageAnalysis]: Checked inductivity of 57599 backedges. 0 proven. 34972 refuted. 0 times theorem prover too weak. 22627 trivial. 0 not checked. [2021-11-13 17:49:14,266 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:49:14,266 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [865919849] [2021-11-13 17:49:14,266 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-13 17:49:14,266 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1695942038] [2021-11-13 17:49:14,267 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1695942038] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 17:49:14,267 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-13 17:49:14,269 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [190, 191] total 381 [2021-11-13 17:49:14,269 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120169797] [2021-11-13 17:49:14,270 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-13 17:49:14,276 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 382 states [2021-11-13 17:49:14,276 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:49:14,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 382 interpolants. [2021-11-13 17:49:14,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36671, Invalid=108871, Unknown=0, NotChecked=0, Total=145542 [2021-11-13 17:49:14,313 INFO L87 Difference]: Start difference. First operand 12276 states and 19011 transitions. Second operand has 382 states, 381 states have (on average 4.889763779527559) internal successors, (1863), 382 states have internal predecessors, (1863), 190 states have call successors, (196), 96 states have call predecessors, (196), 96 states have return successors, (196), 190 states have call predecessors, (196), 190 states have call successors, (196) [2021-11-13 17:56:08,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:56:08,909 INFO L93 Difference]: Finished difference Result 23084 states and 36463 transitions. [2021-11-13 17:56:08,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 572 states. [2021-11-13 17:56:08,911 INFO L78 Accepts]: Start accepts. Automaton has has 382 states, 381 states have (on average 4.889763779527559) internal successors, (1863), 382 states have internal predecessors, (1863), 190 states have call successors, (196), 96 states have call predecessors, (196), 96 states have return successors, (196), 190 states have call predecessors, (196), 190 states have call successors, (196) Word has length 2217 [2021-11-13 17:56:08,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:56:09,050 INFO L225 Difference]: With dead ends: 23084 [2021-11-13 17:56:09,051 INFO L226 Difference]: Without dead ends: 23083 [2021-11-13 17:56:09,127 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4811 GetRequests, 4052 SyntacticMatches, 0 SemanticMatches, 759 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133579 ImplicationChecksByTransitivity, 104.4s TimeCoverageRelationStatistics Valid=181449, Invalid=396911, Unknown=0, NotChecked=0, Total=578360 [2021-11-13 17:56:09,128 INFO L933 BasicCegarLoop]: 256 mSDtfsCounter, 45018 mSDsluCounter, 7028 mSDsCounter, 0 mSdLazyCounter, 24904 mSolverCounterSat, 26505 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23503.17ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 45028 SdHoareTripleChecker+Valid, 7284 SdHoareTripleChecker+Invalid, 51409 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 362.78ms SdHoareTripleChecker+Time, 26505 IncrementalHoareTripleChecker+Valid, 24904 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 29340.85ms IncrementalHoareTripleChecker+Time [2021-11-13 17:56:09,128 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [45028 Valid, 7284 Invalid, 51409 Unknown, 0 Unchecked, 362.78ms Time], IncrementalHoareTripleChecker [26505 Valid, 24904 Invalid, 0 Unknown, 0 Unchecked, 29340.85ms Time] [2021-11-13 17:56:09,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23083 states. [2021-11-13 17:56:11,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23083 to 23028. [2021-11-13 17:56:11,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23028 states, 16174 states have (on average 1.488994682824286) internal successors, (24083), 21642 states have internal predecessors, (24083), 6094 states have call successors, (6094), 758 states have call predecessors, (6094), 759 states have return successors, (6114), 816 states have call predecessors, (6114), 6094 states have call successors, (6114) [2021-11-13 17:56:11,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23028 states to 23028 states and 36291 transitions. [2021-11-13 17:56:11,205 INFO L78 Accepts]: Start accepts. Automaton has 23028 states and 36291 transitions. Word has length 2217 [2021-11-13 17:56:11,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:56:11,208 INFO L470 AbstractCegarLoop]: Abstraction has 23028 states and 36291 transitions. [2021-11-13 17:56:11,209 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 382 states, 381 states have (on average 4.889763779527559) internal successors, (1863), 382 states have internal predecessors, (1863), 190 states have call successors, (196), 96 states have call predecessors, (196), 96 states have return successors, (196), 190 states have call predecessors, (196), 190 states have call successors, (196) [2021-11-13 17:56:11,209 INFO L276 IsEmpty]: Start isEmpty. Operand 23028 states and 36291 transitions. [2021-11-13 17:56:11,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3370 [2021-11-13 17:56:11,406 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:56:11,408 INFO L514 BasicCegarLoop]: trace histogram [191, 190, 190, 190, 190, 190, 190, 190, 190, 188, 188, 188, 30, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:56:11,471 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16c2a965-cc25-4b34-9ab1-44d2da4aa583/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2021-11-13 17:56:11,635 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16c2a965-cc25-4b34-9ab1-44d2da4aa583/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2021-11-13 17:56:11,636 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-13 17:56:11,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:56:11,637 INFO L85 PathProgramCache]: Analyzing trace with hash -1082478944, now seen corresponding path program 3 times [2021-11-13 17:56:11,637 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:56:11,637 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968627018] [2021-11-13 17:56:11,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:56:11,637 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:56:11,727 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-13 17:56:11,727 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1419384737] [2021-11-13 17:56:11,728 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-13 17:56:11,728 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 17:56:11,728 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16c2a965-cc25-4b34-9ab1-44d2da4aa583/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 17:56:11,729 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16c2a965-cc25-4b34-9ab1-44d2da4aa583/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 17:56:11,730 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16c2a965-cc25-4b34-9ab1-44d2da4aa583/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2021-11-13 17:56:12,337 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-13 17:56:12,337 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 17:56:12,345 INFO L263 TraceCheckSpWp]: Trace formula consists of 348 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-13 17:56:12,376 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:56:17,499 INFO L134 CoverageAnalysis]: Checked inductivity of 220607 backedges. 1893 proven. 0 refuted. 0 times theorem prover too weak. 218714 trivial. 0 not checked. [2021-11-13 17:56:17,500 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-13 17:56:17,500 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:56:17,500 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968627018] [2021-11-13 17:56:17,500 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-13 17:56:17,501 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1419384737] [2021-11-13 17:56:17,501 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1419384737] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:56:17,501 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:56:17,503 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-13 17:56:17,503 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688784510] [2021-11-13 17:56:17,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:56:17,506 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 17:56:17,506 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:56:17,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 17:56:17,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-13 17:56:17,507 INFO L87 Difference]: Start difference. First operand 23028 states and 36291 transitions. Second operand has 6 states, 5 states have (on average 30.0) internal successors, (150), 6 states have internal predecessors, (150), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-11-13 17:56:20,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:56:20,434 INFO L93 Difference]: Finished difference Result 45982 states and 72024 transitions. [2021-11-13 17:56:20,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-13 17:56:20,435 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 30.0) internal successors, (150), 6 states have internal predecessors, (150), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 3369 [2021-11-13 17:56:20,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:56:20,655 INFO L225 Difference]: With dead ends: 45982 [2021-11-13 17:56:20,655 INFO L226 Difference]: Without dead ends: 45981 [2021-11-13 17:56:20,683 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3377 GetRequests, 3368 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2021-11-13 17:56:20,684 INFO L933 BasicCegarLoop]: 243 mSDtfsCounter, 282 mSDsluCounter, 470 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 169.71ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 289 SdHoareTripleChecker+Valid, 713 SdHoareTripleChecker+Invalid, 230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.52ms SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 205.92ms IncrementalHoareTripleChecker+Time [2021-11-13 17:56:20,685 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [289 Valid, 713 Invalid, 230 Unknown, 0 Unchecked, 2.52ms Time], IncrementalHoareTripleChecker [81 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 205.92ms Time] [2021-11-13 17:56:20,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45981 states. [2021-11-13 17:56:23,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45981 to 37516. [2021-11-13 17:56:23,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37516 states, 26912 states have (on average 1.5038272889417361) internal successors, (40471), 34999 states have internal predecessors, (40471), 9278 states have call successors, (9278), 1324 states have call predecessors, (9278), 1325 states have return successors, (9298), 1381 states have call predecessors, (9298), 9278 states have call successors, (9298) [2021-11-13 17:56:24,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37516 states to 37516 states and 59047 transitions. [2021-11-13 17:56:24,171 INFO L78 Accepts]: Start accepts. Automaton has 37516 states and 59047 transitions. Word has length 3369 [2021-11-13 17:56:24,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:56:24,176 INFO L470 AbstractCegarLoop]: Abstraction has 37516 states and 59047 transitions. [2021-11-13 17:56:24,176 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 30.0) internal successors, (150), 6 states have internal predecessors, (150), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-11-13 17:56:24,176 INFO L276 IsEmpty]: Start isEmpty. Operand 37516 states and 59047 transitions. [2021-11-13 17:56:24,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3371 [2021-11-13 17:56:24,514 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:56:24,517 INFO L514 BasicCegarLoop]: trace histogram [191, 190, 190, 190, 190, 190, 189, 189, 189, 189, 189, 189, 30, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:56:24,555 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16c2a965-cc25-4b34-9ab1-44d2da4aa583/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2021-11-13 17:56:24,743 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27,28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16c2a965-cc25-4b34-9ab1-44d2da4aa583/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 17:56:24,743 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-13 17:56:24,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:56:24,745 INFO L85 PathProgramCache]: Analyzing trace with hash 1207995847, now seen corresponding path program 1 times [2021-11-13 17:56:24,745 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:56:24,745 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612764367] [2021-11-13 17:56:24,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:56:24,745 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:56:24,845 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-13 17:56:24,845 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2017320165] [2021-11-13 17:56:24,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:56:24,846 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 17:56:24,846 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16c2a965-cc25-4b34-9ab1-44d2da4aa583/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 17:56:24,847 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16c2a965-cc25-4b34-9ab1-44d2da4aa583/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 17:56:24,849 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16c2a965-cc25-4b34-9ab1-44d2da4aa583/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2021-11-13 17:56:26,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:56:26,813 INFO L263 TraceCheckSpWp]: Trace formula consists of 9797 conjuncts, 383 conjunts are in the unsatisfiable core [2021-11-13 17:56:26,850 INFO L286 TraceCheckSpWp]: Computing forward predicates...