./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test9-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 7e70badd Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5bf9f18-efbd-4e5c-be83-a58e3e0cf0ff/bin/uautomizer-wIGwrQj20G/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5bf9f18-efbd-4e5c-be83-a58e3e0cf0ff/bin/uautomizer-wIGwrQj20G/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5bf9f18-efbd-4e5c-be83-a58e3e0cf0ff/bin/uautomizer-wIGwrQj20G/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5bf9f18-efbd-4e5c-be83-a58e3e0cf0ff/bin/uautomizer-wIGwrQj20G/config/AutomizerReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test9-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5bf9f18-efbd-4e5c-be83-a58e3e0cf0ff/bin/uautomizer-wIGwrQj20G/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5bf9f18-efbd-4e5c-be83-a58e3e0cf0ff/bin/uautomizer-wIGwrQj20G --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 f4a8b24485e53fece96b44fdc12e6f161e1bbffda2cd597a930f4925e148dc01 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-7e70bad [2021-11-23 12:30:50,827 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 12:30:50,830 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 12:30:50,887 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 12:30:50,888 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 12:30:50,889 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 12:30:50,891 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 12:30:50,894 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 12:30:50,896 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 12:30:50,897 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 12:30:50,899 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 12:30:50,901 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 12:30:50,901 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 12:30:50,903 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 12:30:50,905 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 12:30:50,907 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 12:30:50,908 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 12:30:50,910 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 12:30:50,912 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 12:30:50,915 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 12:30:50,918 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 12:30:50,920 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 12:30:50,921 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 12:30:50,923 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 12:30:50,927 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 12:30:50,928 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 12:30:50,928 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 12:30:50,930 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 12:30:50,931 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 12:30:50,932 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 12:30:50,933 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 12:30:50,934 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 12:30:50,935 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 12:30:50,936 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 12:30:50,938 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 12:30:50,938 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 12:30:50,939 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 12:30:50,940 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 12:30:50,940 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 12:30:50,941 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 12:30:50,942 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 12:30:50,943 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5bf9f18-efbd-4e5c-be83-a58e3e0cf0ff/bin/uautomizer-wIGwrQj20G/config/svcomp-Overflow-32bit-Automizer_Default.epf [2021-11-23 12:30:50,967 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 12:30:50,968 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 12:30:50,968 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 12:30:50,968 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 12:30:50,970 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-23 12:30:50,970 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-23 12:30:50,971 INFO L138 SettingsManager]: * Use SBE=true [2021-11-23 12:30:50,971 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 12:30:50,971 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 12:30:50,971 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-23 12:30:50,972 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 12:30:50,972 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 12:30:50,972 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 12:30:50,973 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 12:30:50,973 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 12:30:50,973 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 12:30:50,973 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-11-23 12:30:50,974 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 12:30:50,974 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 12:30:50,974 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 12:30:50,974 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 12:30:50,975 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 12:30:50,975 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-23 12:30:50,975 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 12:30:50,976 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 12:30:50,976 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 12:30:50,976 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 12:30:50,976 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 12:30:50,977 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-23 12:30:50,977 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 12:30:50,977 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 12:30:50,978 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 12:30:50,978 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_e5bf9f18-efbd-4e5c-be83-a58e3e0cf0ff/bin/uautomizer-wIGwrQj20G/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5bf9f18-efbd-4e5c-be83-a58e3e0cf0ff/bin/uautomizer-wIGwrQj20G Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f4a8b24485e53fece96b44fdc12e6f161e1bbffda2cd597a930f4925e148dc01 [2021-11-23 12:30:51,266 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 12:30:51,296 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 12:30:51,299 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 12:30:51,300 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 12:30:51,301 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 12:30:51,302 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5bf9f18-efbd-4e5c-be83-a58e3e0cf0ff/bin/uautomizer-wIGwrQj20G/../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test9-1.i [2021-11-23 12:30:51,408 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5bf9f18-efbd-4e5c-be83-a58e3e0cf0ff/bin/uautomizer-wIGwrQj20G/data/fc357ca0e/9db0caf677454258b66b530b64ea7c72/FLAG28a0fb7cd [2021-11-23 12:30:52,148 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 12:30:52,149 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5bf9f18-efbd-4e5c-be83-a58e3e0cf0ff/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test9-1.i [2021-11-23 12:30:52,176 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5bf9f18-efbd-4e5c-be83-a58e3e0cf0ff/bin/uautomizer-wIGwrQj20G/data/fc357ca0e/9db0caf677454258b66b530b64ea7c72/FLAG28a0fb7cd [2021-11-23 12:30:52,253 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5bf9f18-efbd-4e5c-be83-a58e3e0cf0ff/bin/uautomizer-wIGwrQj20G/data/fc357ca0e/9db0caf677454258b66b530b64ea7c72 [2021-11-23 12:30:52,256 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 12:30:52,258 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 12:30:52,260 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 12:30:52,260 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 12:30:52,269 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 12:30:52,271 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 12:30:52" (1/1) ... [2021-11-23 12:30:52,275 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7eb91499 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:30:52, skipping insertion in model container [2021-11-23 12:30:52,275 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 12:30:52" (1/1) ... [2021-11-23 12:30:52,281 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 12:30:52,366 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 12:30:52,923 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5bf9f18-efbd-4e5c-be83-a58e3e0cf0ff/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test9-1.i[33021,33034] [2021-11-23 12:30:53,276 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5bf9f18-efbd-4e5c-be83-a58e3e0cf0ff/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test9-1.i[84583,84596] [2021-11-23 12:30:53,280 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 12:30:53,289 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 12:30:53,339 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5bf9f18-efbd-4e5c-be83-a58e3e0cf0ff/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test9-1.i[33021,33034] [2021-11-23 12:30:53,491 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5bf9f18-efbd-4e5c-be83-a58e3e0cf0ff/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test9-1.i[84583,84596] [2021-11-23 12:30:53,494 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 12:30:53,543 INFO L208 MainTranslator]: Completed translation [2021-11-23 12:30:53,543 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:30:53 WrapperNode [2021-11-23 12:30:53,543 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 12:30:53,544 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 12:30:53,544 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 12:30:53,544 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 12:30:53,553 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:30:53" (1/1) ... [2021-11-23 12:30:53,615 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:30:53" (1/1) ... [2021-11-23 12:30:53,872 INFO L137 Inliner]: procedures = 177, calls = 730, calls flagged for inlining = 506, calls inlined = 506, statements flattened = 4387 [2021-11-23 12:30:53,873 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 12:30:53,874 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 12:30:53,874 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 12:30:53,874 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 12:30:53,887 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:30:53" (1/1) ... [2021-11-23 12:30:53,888 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:30:53" (1/1) ... [2021-11-23 12:30:53,923 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:30:53" (1/1) ... [2021-11-23 12:30:53,924 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:30:53" (1/1) ... [2021-11-23 12:30:54,012 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:30:53" (1/1) ... [2021-11-23 12:30:54,055 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:30:53" (1/1) ... [2021-11-23 12:30:54,065 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:30:53" (1/1) ... [2021-11-23 12:30:54,099 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 12:30:54,101 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 12:30:54,102 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 12:30:54,102 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 12:30:54,103 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:30:53" (1/1) ... [2021-11-23 12:30:54,111 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 12:30:54,125 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5bf9f18-efbd-4e5c-be83-a58e3e0cf0ff/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 12:30:54,143 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5bf9f18-efbd-4e5c-be83-a58e3e0cf0ff/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 12:30:54,176 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5bf9f18-efbd-4e5c-be83-a58e3e0cf0ff/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 12:30:54,197 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-23 12:30:54,197 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-23 12:30:54,197 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-23 12:30:54,197 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 12:30:54,198 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-23 12:30:54,198 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-23 12:30:54,198 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-23 12:30:54,198 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-23 12:30:54,198 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-23 12:30:54,198 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 12:30:54,199 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 12:30:54,199 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 12:30:54,382 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 12:30:54,384 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 12:30:57,393 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 12:30:57,424 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 12:30:57,425 INFO L301 CfgBuilder]: Removed 54 assume(true) statements. [2021-11-23 12:30:57,433 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 12:30:57 BoogieIcfgContainer [2021-11-23 12:30:57,433 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 12:30:57,438 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 12:30:57,439 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 12:30:57,443 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 12:30:57,444 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 12:30:52" (1/3) ... [2021-11-23 12:30:57,445 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7459fe58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 12:30:57, skipping insertion in model container [2021-11-23 12:30:57,445 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:30:53" (2/3) ... [2021-11-23 12:30:57,445 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7459fe58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 12:30:57, skipping insertion in model container [2021-11-23 12:30:57,446 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 12:30:57" (3/3) ... [2021-11-23 12:30:57,451 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_SFH_test9-1.i [2021-11-23 12:30:57,458 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 12:30:57,459 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2021-11-23 12:30:57,545 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 12:30:57,556 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 [2021-11-23 12:30:57,557 INFO L340 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2021-11-23 12:30:57,612 INFO L276 IsEmpty]: Start isEmpty. Operand has 1671 states, 1662 states have (on average 1.670878459687124) internal successors, (2777), 1670 states have internal predecessors, (2777), 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) [2021-11-23 12:30:57,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-23 12:30:57,617 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:30:57,617 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:30:57,618 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-11-23 12:30:57,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:30:57,628 INFO L85 PathProgramCache]: Analyzing trace with hash 1805953417, now seen corresponding path program 1 times [2021-11-23 12:30:57,638 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:30:57,639 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753046992] [2021-11-23 12:30:57,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:30:57,640 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:30:57,799 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 12:30:57,800 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [429679336] [2021-11-23 12:30:57,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:30:57,801 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 12:30:57,801 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5bf9f18-efbd-4e5c-be83-a58e3e0cf0ff/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 12:30:57,810 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5bf9f18-efbd-4e5c-be83-a58e3e0cf0ff/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 12:30:57,834 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5bf9f18-efbd-4e5c-be83-a58e3e0cf0ff/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-23 12:30:57,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:30:57,949 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-23 12:30:57,955 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:30:58,095 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-23 12:30:58,106 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-23 12:30:58,163 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-23 12:30:58,164 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2021-11-23 12:30:58,213 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 14 [2021-11-23 12:30:58,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:30:58,226 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 12:30:58,226 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:30:58,227 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753046992] [2021-11-23 12:30:58,227 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 12:30:58,227 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [429679336] [2021-11-23 12:30:58,228 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [429679336] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:30:58,228 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:30:58,228 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 12:30:58,230 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480756108] [2021-11-23 12:30:58,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:30:58,235 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 12:30:58,236 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:30:58,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 12:30:58,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 12:30:58,270 INFO L87 Difference]: Start difference. First operand has 1671 states, 1662 states have (on average 1.670878459687124) internal successors, (2777), 1670 states have internal predecessors, (2777), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 5 states, 4 states have (on average 1.75) internal successors, (7), 5 states have internal predecessors, (7), 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) [2021-11-23 12:30:59,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:30:59,521 INFO L93 Difference]: Finished difference Result 4957 states and 8247 transitions. [2021-11-23 12:30:59,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 12:30:59,525 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 5 states have internal predecessors, (7), 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 7 [2021-11-23 12:30:59,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:30:59,562 INFO L225 Difference]: With dead ends: 4957 [2021-11-23 12:30:59,562 INFO L226 Difference]: Without dead ends: 3283 [2021-11-23 12:30:59,570 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-23 12:30:59,574 INFO L933 BasicCegarLoop]: 2168 mSDtfsCounter, 2188 mSDsluCounter, 6450 mSDsCounter, 0 mSdLazyCounter, 253 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2188 SdHoareTripleChecker+Valid, 8618 SdHoareTripleChecker+Invalid, 268 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-23 12:30:59,575 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2188 Valid, 8618 Invalid, 268 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [15 Valid, 253 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-11-23 12:30:59,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3283 states. [2021-11-23 12:30:59,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3283 to 1673. [2021-11-23 12:30:59,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1673 states, 1665 states have (on average 1.333933933933934) internal successors, (2221), 1672 states have internal predecessors, (2221), 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) [2021-11-23 12:30:59,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1673 states to 1673 states and 2221 transitions. [2021-11-23 12:30:59,709 INFO L78 Accepts]: Start accepts. Automaton has 1673 states and 2221 transitions. Word has length 7 [2021-11-23 12:30:59,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:30:59,710 INFO L470 AbstractCegarLoop]: Abstraction has 1673 states and 2221 transitions. [2021-11-23 12:30:59,710 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 5 states have internal predecessors, (7), 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) [2021-11-23 12:30:59,711 INFO L276 IsEmpty]: Start isEmpty. Operand 1673 states and 2221 transitions. [2021-11-23 12:30:59,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-23 12:30:59,713 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:30:59,713 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] [2021-11-23 12:30:59,751 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5bf9f18-efbd-4e5c-be83-a58e3e0cf0ff/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-23 12:30:59,939 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5bf9f18-efbd-4e5c-be83-a58e3e0cf0ff/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2021-11-23 12:30:59,940 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-11-23 12:30:59,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:30:59,941 INFO L85 PathProgramCache]: Analyzing trace with hash -1577515773, now seen corresponding path program 1 times [2021-11-23 12:30:59,941 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:30:59,941 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1687262653] [2021-11-23 12:30:59,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:30:59,942 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:30:59,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:31:00,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:31:00,053 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:31:00,053 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1687262653] [2021-11-23 12:31:00,056 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1687262653] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:31:00,056 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:31:00,056 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 12:31:00,057 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732680873] [2021-11-23 12:31:00,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:31:00,060 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 12:31:00,063 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:31:00,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 12:31:00,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 12:31:00,065 INFO L87 Difference]: Start difference. First operand 1673 states and 2221 transitions. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 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) [2021-11-23 12:31:00,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:31:00,593 INFO L93 Difference]: Finished difference Result 4810 states and 6396 transitions. [2021-11-23 12:31:00,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 12:31:00,595 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 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 44 [2021-11-23 12:31:00,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:31:00,615 INFO L225 Difference]: With dead ends: 4810 [2021-11-23 12:31:00,616 INFO L226 Difference]: Without dead ends: 3241 [2021-11-23 12:31:00,619 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 12:31:00,621 INFO L933 BasicCegarLoop]: 2189 mSDtfsCounter, 2089 mSDsluCounter, 4331 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2089 SdHoareTripleChecker+Valid, 6520 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-23 12:31:00,622 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2089 Valid, 6520 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-23 12:31:00,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3241 states. [2021-11-23 12:31:00,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3241 to 1673. [2021-11-23 12:31:00,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1673 states, 1665 states have (on average 1.3333333333333333) internal successors, (2220), 1672 states have internal predecessors, (2220), 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) [2021-11-23 12:31:00,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1673 states to 1673 states and 2220 transitions. [2021-11-23 12:31:00,683 INFO L78 Accepts]: Start accepts. Automaton has 1673 states and 2220 transitions. Word has length 44 [2021-11-23 12:31:00,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:31:00,683 INFO L470 AbstractCegarLoop]: Abstraction has 1673 states and 2220 transitions. [2021-11-23 12:31:00,683 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 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) [2021-11-23 12:31:00,684 INFO L276 IsEmpty]: Start isEmpty. Operand 1673 states and 2220 transitions. [2021-11-23 12:31:00,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-23 12:31:00,686 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:31:00,686 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] [2021-11-23 12:31:00,686 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-23 12:31:00,687 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-11-23 12:31:00,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:31:00,688 INFO L85 PathProgramCache]: Analyzing trace with hash 505195510, now seen corresponding path program 1 times [2021-11-23 12:31:00,688 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:31:00,688 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585400919] [2021-11-23 12:31:00,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:31:00,689 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:31:00,710 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 12:31:00,711 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1005722223] [2021-11-23 12:31:00,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:31:00,711 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 12:31:00,711 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5bf9f18-efbd-4e5c-be83-a58e3e0cf0ff/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 12:31:00,712 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5bf9f18-efbd-4e5c-be83-a58e3e0cf0ff/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 12:31:00,739 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5bf9f18-efbd-4e5c-be83-a58e3e0cf0ff/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-23 12:31:00,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:31:00,882 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 12:31:00,886 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:31:00,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:31:00,997 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 12:31:00,997 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:31:00,998 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585400919] [2021-11-23 12:31:00,998 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 12:31:00,998 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1005722223] [2021-11-23 12:31:00,998 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1005722223] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:31:00,999 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:31:00,999 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 12:31:00,999 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802148819] [2021-11-23 12:31:00,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:31:01,000 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 12:31:01,000 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:31:01,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 12:31:01,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 12:31:01,001 INFO L87 Difference]: Start difference. First operand 1673 states and 2220 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 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) [2021-11-23 12:31:01,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:31:01,148 INFO L93 Difference]: Finished difference Result 3359 states and 4463 transitions. [2021-11-23 12:31:01,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 12:31:01,148 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 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 57 [2021-11-23 12:31:01,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:31:01,159 INFO L225 Difference]: With dead ends: 3359 [2021-11-23 12:31:01,159 INFO L226 Difference]: Without dead ends: 1694 [2021-11-23 12:31:01,164 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 12:31:01,167 INFO L933 BasicCegarLoop]: 2196 mSDtfsCounter, 8 mSDsluCounter, 2179 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 4375 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 12:31:01,176 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 4375 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 12:31:01,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1694 states. [2021-11-23 12:31:01,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1694 to 1693. [2021-11-23 12:31:01,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1693 states, 1685 states have (on average 1.3293768545994065) internal successors, (2240), 1692 states have internal predecessors, (2240), 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) [2021-11-23 12:31:01,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1693 states to 1693 states and 2240 transitions. [2021-11-23 12:31:01,227 INFO L78 Accepts]: Start accepts. Automaton has 1693 states and 2240 transitions. Word has length 57 [2021-11-23 12:31:01,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:31:01,228 INFO L470 AbstractCegarLoop]: Abstraction has 1693 states and 2240 transitions. [2021-11-23 12:31:01,228 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 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) [2021-11-23 12:31:01,228 INFO L276 IsEmpty]: Start isEmpty. Operand 1693 states and 2240 transitions. [2021-11-23 12:31:01,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-23 12:31:01,238 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:31:01,238 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] [2021-11-23 12:31:01,280 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5bf9f18-efbd-4e5c-be83-a58e3e0cf0ff/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-23 12:31:01,458 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5bf9f18-efbd-4e5c-be83-a58e3e0cf0ff/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 12:31:01,458 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-11-23 12:31:01,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:31:01,459 INFO L85 PathProgramCache]: Analyzing trace with hash 482563256, now seen corresponding path program 1 times [2021-11-23 12:31:01,459 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:31:01,459 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783157992] [2021-11-23 12:31:01,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:31:01,459 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:31:01,496 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 12:31:01,497 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [832978009] [2021-11-23 12:31:01,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:31:01,497 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 12:31:01,497 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5bf9f18-efbd-4e5c-be83-a58e3e0cf0ff/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 12:31:01,500 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5bf9f18-efbd-4e5c-be83-a58e3e0cf0ff/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 12:31:01,521 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5bf9f18-efbd-4e5c-be83-a58e3e0cf0ff/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-23 12:31:01,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:31:01,657 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-23 12:31:01,662 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:31:01,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:31:01,801 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 12:31:01,802 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:31:01,802 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1783157992] [2021-11-23 12:31:01,802 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 12:31:01,802 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [832978009] [2021-11-23 12:31:01,802 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [832978009] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:31:01,802 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:31:01,803 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 12:31:01,803 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577084912] [2021-11-23 12:31:01,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:31:01,804 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 12:31:01,804 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:31:01,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 12:31:01,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 12:31:01,805 INFO L87 Difference]: Start difference. First operand 1693 states and 2240 transitions. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 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) [2021-11-23 12:31:01,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:31:01,980 INFO L93 Difference]: Finished difference Result 3368 states and 4462 transitions. [2021-11-23 12:31:01,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 12:31:01,980 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 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 57 [2021-11-23 12:31:01,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:31:01,990 INFO L225 Difference]: With dead ends: 3368 [2021-11-23 12:31:01,990 INFO L226 Difference]: Without dead ends: 1683 [2021-11-23 12:31:01,993 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 12:31:01,994 INFO L933 BasicCegarLoop]: 2196 mSDtfsCounter, 2201 mSDsluCounter, 4368 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2201 SdHoareTripleChecker+Valid, 6564 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 12:31:01,994 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2201 Valid, 6564 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 12:31:01,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1683 states. [2021-11-23 12:31:02,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1683 to 1679. [2021-11-23 12:31:02,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1679 states, 1671 states have (on average 1.3279473369239976) internal successors, (2219), 1678 states have internal predecessors, (2219), 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) [2021-11-23 12:31:02,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1679 states to 1679 states and 2219 transitions. [2021-11-23 12:31:02,071 INFO L78 Accepts]: Start accepts. Automaton has 1679 states and 2219 transitions. Word has length 57 [2021-11-23 12:31:02,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:31:02,071 INFO L470 AbstractCegarLoop]: Abstraction has 1679 states and 2219 transitions. [2021-11-23 12:31:02,071 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 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) [2021-11-23 12:31:02,072 INFO L276 IsEmpty]: Start isEmpty. Operand 1679 states and 2219 transitions. [2021-11-23 12:31:02,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-23 12:31:02,073 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:31:02,073 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] [2021-11-23 12:31:02,107 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5bf9f18-efbd-4e5c-be83-a58e3e0cf0ff/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-23 12:31:02,278 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5bf9f18-efbd-4e5c-be83-a58e3e0cf0ff/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 12:31:02,278 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-11-23 12:31:02,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:31:02,279 INFO L85 PathProgramCache]: Analyzing trace with hash 283552234, now seen corresponding path program 1 times [2021-11-23 12:31:02,279 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:31:02,279 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2122963229] [2021-11-23 12:31:02,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:31:02,279 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:31:02,295 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 12:31:02,296 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1807104182] [2021-11-23 12:31:02,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:31:02,296 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 12:31:02,296 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5bf9f18-efbd-4e5c-be83-a58e3e0cf0ff/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 12:31:02,297 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5bf9f18-efbd-4e5c-be83-a58e3e0cf0ff/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 12:31:02,321 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5bf9f18-efbd-4e5c-be83-a58e3e0cf0ff/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-23 12:31:02,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:31:02,444 INFO L263 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-23 12:31:02,447 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:31:02,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:31:02,592 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 12:31:02,592 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:31:02,592 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2122963229] [2021-11-23 12:31:02,592 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 12:31:02,592 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1807104182] [2021-11-23 12:31:02,592 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1807104182] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:31:02,593 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:31:02,593 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 12:31:02,593 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488027550] [2021-11-23 12:31:02,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:31:02,594 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 12:31:02,594 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:31:02,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 12:31:02,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 12:31:02,595 INFO L87 Difference]: Start difference. First operand 1679 states and 2219 transitions. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 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) [2021-11-23 12:31:02,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:31:02,808 INFO L93 Difference]: Finished difference Result 5023 states and 6643 transitions. [2021-11-23 12:31:02,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 12:31:02,808 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 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 57 [2021-11-23 12:31:02,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:31:02,830 INFO L225 Difference]: With dead ends: 5023 [2021-11-23 12:31:02,830 INFO L226 Difference]: Without dead ends: 3352 [2021-11-23 12:31:02,833 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 12:31:02,834 INFO L933 BasicCegarLoop]: 2199 mSDtfsCounter, 2191 mSDsluCounter, 4377 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2191 SdHoareTripleChecker+Valid, 6576 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 12:31:02,835 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2191 Valid, 6576 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 12:31:02,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3352 states. [2021-11-23 12:31:02,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3352 to 1702. [2021-11-23 12:31:02,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1702 states, 1694 states have (on average 1.3246753246753247) internal successors, (2244), 1701 states have internal predecessors, (2244), 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) [2021-11-23 12:31:02,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1702 states to 1702 states and 2244 transitions. [2021-11-23 12:31:02,894 INFO L78 Accepts]: Start accepts. Automaton has 1702 states and 2244 transitions. Word has length 57 [2021-11-23 12:31:02,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:31:02,894 INFO L470 AbstractCegarLoop]: Abstraction has 1702 states and 2244 transitions. [2021-11-23 12:31:02,895 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 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) [2021-11-23 12:31:02,895 INFO L276 IsEmpty]: Start isEmpty. Operand 1702 states and 2244 transitions. [2021-11-23 12:31:02,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-23 12:31:02,896 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:31:02,896 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] [2021-11-23 12:31:02,937 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5bf9f18-efbd-4e5c-be83-a58e3e0cf0ff/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-23 12:31:03,122 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5bf9f18-efbd-4e5c-be83-a58e3e0cf0ff/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 12:31:03,122 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-11-23 12:31:03,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:31:03,123 INFO L85 PathProgramCache]: Analyzing trace with hash -297894748, now seen corresponding path program 1 times [2021-11-23 12:31:03,123 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:31:03,123 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233401390] [2021-11-23 12:31:03,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:31:03,123 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:31:03,149 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 12:31:03,152 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [774819539] [2021-11-23 12:31:03,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:31:03,153 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 12:31:03,153 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5bf9f18-efbd-4e5c-be83-a58e3e0cf0ff/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 12:31:03,154 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5bf9f18-efbd-4e5c-be83-a58e3e0cf0ff/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 12:31:03,176 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5bf9f18-efbd-4e5c-be83-a58e3e0cf0ff/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-23 12:31:03,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:31:03,284 INFO L263 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-23 12:31:03,292 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:31:03,424 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:31:03,424 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 12:31:03,424 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:31:03,425 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [233401390] [2021-11-23 12:31:03,425 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 12:31:03,425 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [774819539] [2021-11-23 12:31:03,425 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [774819539] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:31:03,425 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:31:03,426 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 12:31:03,426 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227819755] [2021-11-23 12:31:03,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:31:03,427 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 12:31:03,427 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:31:03,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 12:31:03,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 12:31:03,428 INFO L87 Difference]: Start difference. First operand 1702 states and 2244 transitions. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 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) [2021-11-23 12:31:03,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:31:03,525 INFO L93 Difference]: Finished difference Result 3367 states and 4446 transitions. [2021-11-23 12:31:03,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 12:31:03,526 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 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 57 [2021-11-23 12:31:03,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:31:03,536 INFO L225 Difference]: With dead ends: 3367 [2021-11-23 12:31:03,536 INFO L226 Difference]: Without dead ends: 1673 [2021-11-23 12:31:03,539 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 12:31:03,540 INFO L933 BasicCegarLoop]: 2192 mSDtfsCounter, 2182 mSDsluCounter, 2192 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2182 SdHoareTripleChecker+Valid, 4384 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 12:31:03,541 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2182 Valid, 4384 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 12:31:03,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1673 states. [2021-11-23 12:31:03,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1673 to 1670. [2021-11-23 12:31:03,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1670 states, 1662 states have (on average 1.3267148014440433) internal successors, (2205), 1669 states have internal predecessors, (2205), 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) [2021-11-23 12:31:03,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1670 states to 1670 states and 2205 transitions. [2021-11-23 12:31:03,599 INFO L78 Accepts]: Start accepts. Automaton has 1670 states and 2205 transitions. Word has length 57 [2021-11-23 12:31:03,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:31:03,600 INFO L470 AbstractCegarLoop]: Abstraction has 1670 states and 2205 transitions. [2021-11-23 12:31:03,600 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 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) [2021-11-23 12:31:03,600 INFO L276 IsEmpty]: Start isEmpty. Operand 1670 states and 2205 transitions. [2021-11-23 12:31:03,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-23 12:31:03,601 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:31:03,601 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] [2021-11-23 12:31:03,640 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5bf9f18-efbd-4e5c-be83-a58e3e0cf0ff/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-23 12:31:03,826 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5bf9f18-efbd-4e5c-be83-a58e3e0cf0ff/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 12:31:03,826 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-11-23 12:31:03,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:31:03,827 INFO L85 PathProgramCache]: Analyzing trace with hash 260919980, now seen corresponding path program 1 times [2021-11-23 12:31:03,827 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:31:03,827 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088606636] [2021-11-23 12:31:03,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:31:03,827 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:31:03,844 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 12:31:03,845 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1238709149] [2021-11-23 12:31:03,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:31:03,845 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 12:31:03,845 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5bf9f18-efbd-4e5c-be83-a58e3e0cf0ff/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 12:31:03,859 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5bf9f18-efbd-4e5c-be83-a58e3e0cf0ff/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 12:31:03,887 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5bf9f18-efbd-4e5c-be83-a58e3e0cf0ff/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-23 12:31:04,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:31:04,016 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-23 12:31:04,018 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:31:04,275 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:31:04,275 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 12:31:04,276 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:31:04,276 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088606636] [2021-11-23 12:31:04,276 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 12:31:04,276 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1238709149] [2021-11-23 12:31:04,276 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1238709149] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:31:04,276 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:31:04,277 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 12:31:04,277 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719778256] [2021-11-23 12:31:04,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:31:04,278 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 12:31:04,278 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:31:04,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 12:31:04,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 12:31:04,279 INFO L87 Difference]: Start difference. First operand 1670 states and 2205 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 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) [2021-11-23 12:31:04,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:31:04,392 INFO L93 Difference]: Finished difference Result 4917 states and 6501 transitions. [2021-11-23 12:31:04,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 12:31:04,393 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 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 57 [2021-11-23 12:31:04,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:31:04,415 INFO L225 Difference]: With dead ends: 4917 [2021-11-23 12:31:04,415 INFO L226 Difference]: Without dead ends: 3255 [2021-11-23 12:31:04,419 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 12:31:04,420 INFO L933 BasicCegarLoop]: 2247 mSDtfsCounter, 2074 mSDsluCounter, 2177 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2074 SdHoareTripleChecker+Valid, 4424 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 12:31:04,421 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2074 Valid, 4424 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 12:31:04,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3255 states. [2021-11-23 12:31:04,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3255 to 3251. [2021-11-23 12:31:04,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3251 states, 3243 states have (on average 1.326549491211841) internal successors, (4302), 3250 states have internal predecessors, (4302), 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) [2021-11-23 12:31:04,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3251 states to 3251 states and 4302 transitions. [2021-11-23 12:31:04,544 INFO L78 Accepts]: Start accepts. Automaton has 3251 states and 4302 transitions. Word has length 57 [2021-11-23 12:31:04,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:31:04,546 INFO L470 AbstractCegarLoop]: Abstraction has 3251 states and 4302 transitions. [2021-11-23 12:31:04,546 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 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) [2021-11-23 12:31:04,547 INFO L276 IsEmpty]: Start isEmpty. Operand 3251 states and 4302 transitions. [2021-11-23 12:31:04,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-23 12:31:04,548 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:31:04,549 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] [2021-11-23 12:31:04,586 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5bf9f18-efbd-4e5c-be83-a58e3e0cf0ff/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-23 12:31:04,763 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5bf9f18-efbd-4e5c-be83-a58e3e0cf0ff/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 12:31:04,763 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-11-23 12:31:04,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:31:04,764 INFO L85 PathProgramCache]: Analyzing trace with hash -972101187, now seen corresponding path program 1 times [2021-11-23 12:31:04,764 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:31:04,764 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1574157920] [2021-11-23 12:31:04,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:31:04,764 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:31:04,779 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 12:31:04,779 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2139324035] [2021-11-23 12:31:04,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:31:04,780 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 12:31:04,780 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5bf9f18-efbd-4e5c-be83-a58e3e0cf0ff/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 12:31:04,781 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5bf9f18-efbd-4e5c-be83-a58e3e0cf0ff/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 12:31:04,794 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5bf9f18-efbd-4e5c-be83-a58e3e0cf0ff/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-23 12:31:05,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:31:05,102 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-23 12:31:05,104 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:31:05,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:31:05,223 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 12:31:05,223 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:31:05,223 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1574157920] [2021-11-23 12:31:05,223 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 12:31:05,224 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2139324035] [2021-11-23 12:31:05,224 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2139324035] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:31:05,224 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:31:05,224 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 12:31:05,224 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447216329] [2021-11-23 12:31:05,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:31:05,225 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 12:31:05,225 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:31:05,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 12:31:05,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 12:31:05,226 INFO L87 Difference]: Start difference. First operand 3251 states and 4302 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 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) [2021-11-23 12:31:05,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:31:05,318 INFO L93 Difference]: Finished difference Result 6462 states and 8565 transitions. [2021-11-23 12:31:05,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 12:31:05,319 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 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 64 [2021-11-23 12:31:05,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:31:05,336 INFO L225 Difference]: With dead ends: 6462 [2021-11-23 12:31:05,337 INFO L226 Difference]: Without dead ends: 3252 [2021-11-23 12:31:05,341 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 12:31:05,342 INFO L933 BasicCegarLoop]: 2198 mSDtfsCounter, 0 mSDsluCounter, 2190 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4388 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 12:31:05,342 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 4388 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 12:31:05,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3252 states. [2021-11-23 12:31:05,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3252 to 3252. [2021-11-23 12:31:05,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3252 states, 3244 states have (on average 1.3264488286066585) internal successors, (4303), 3251 states have internal predecessors, (4303), 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) [2021-11-23 12:31:05,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3252 states to 3252 states and 4303 transitions. [2021-11-23 12:31:05,428 INFO L78 Accepts]: Start accepts. Automaton has 3252 states and 4303 transitions. Word has length 64 [2021-11-23 12:31:05,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:31:05,428 INFO L470 AbstractCegarLoop]: Abstraction has 3252 states and 4303 transitions. [2021-11-23 12:31:05,429 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 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) [2021-11-23 12:31:05,429 INFO L276 IsEmpty]: Start isEmpty. Operand 3252 states and 4303 transitions. [2021-11-23 12:31:05,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-23 12:31:05,430 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:31:05,430 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] [2021-11-23 12:31:05,475 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5bf9f18-efbd-4e5c-be83-a58e3e0cf0ff/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-23 12:31:05,658 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5bf9f18-efbd-4e5c-be83-a58e3e0cf0ff/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 12:31:05,658 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-11-23 12:31:05,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:31:05,659 INFO L85 PathProgramCache]: Analyzing trace with hash -740468942, now seen corresponding path program 1 times [2021-11-23 12:31:05,659 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:31:05,659 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735492539] [2021-11-23 12:31:05,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:31:05,659 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:31:05,671 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 12:31:05,673 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1491673464] [2021-11-23 12:31:05,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:31:05,674 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 12:31:05,674 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5bf9f18-efbd-4e5c-be83-a58e3e0cf0ff/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 12:31:05,675 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5bf9f18-efbd-4e5c-be83-a58e3e0cf0ff/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 12:31:05,680 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5bf9f18-efbd-4e5c-be83-a58e3e0cf0ff/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-23 12:31:05,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:31:05,930 INFO L263 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-23 12:31:05,932 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:31:06,068 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:31:06,068 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 12:31:06,164 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-23 12:31:06,165 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:31:06,165 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735492539] [2021-11-23 12:31:06,165 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 12:31:06,166 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1491673464] [2021-11-23 12:31:06,168 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1491673464] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-23 12:31:06,168 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-23 12:31:06,170 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2021-11-23 12:31:06,172 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131715846] [2021-11-23 12:31:06,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:31:06,173 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 12:31:06,173 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:31:06,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 12:31:06,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 12:31:06,176 INFO L87 Difference]: Start difference. First operand 3252 states and 4303 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 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) [2021-11-23 12:31:06,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:31:06,268 INFO L93 Difference]: Finished difference Result 6464 states and 8567 transitions. [2021-11-23 12:31:06,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 12:31:06,269 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 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 65 [2021-11-23 12:31:06,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:31:06,288 INFO L225 Difference]: With dead ends: 6464 [2021-11-23 12:31:06,288 INFO L226 Difference]: Without dead ends: 3253 [2021-11-23 12:31:06,293 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 12:31:06,296 INFO L933 BasicCegarLoop]: 2197 mSDtfsCounter, 0 mSDsluCounter, 2190 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4387 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 12:31:06,297 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 4387 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 12:31:06,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3253 states. [2021-11-23 12:31:06,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3253 to 3253. [2021-11-23 12:31:06,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3253 states, 3245 states have (on average 1.3263482280431433) internal successors, (4304), 3252 states have internal predecessors, (4304), 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) [2021-11-23 12:31:06,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3253 states to 3253 states and 4304 transitions. [2021-11-23 12:31:06,397 INFO L78 Accepts]: Start accepts. Automaton has 3253 states and 4304 transitions. Word has length 65 [2021-11-23 12:31:06,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:31:06,398 INFO L470 AbstractCegarLoop]: Abstraction has 3253 states and 4304 transitions. [2021-11-23 12:31:06,398 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 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) [2021-11-23 12:31:06,398 INFO L276 IsEmpty]: Start isEmpty. Operand 3253 states and 4304 transitions. [2021-11-23 12:31:06,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-23 12:31:06,399 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:31:06,399 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] [2021-11-23 12:31:06,442 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5bf9f18-efbd-4e5c-be83-a58e3e0cf0ff/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-23 12:31:06,626 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5bf9f18-efbd-4e5c-be83-a58e3e0cf0ff/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 12:31:06,626 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-11-23 12:31:06,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:31:06,627 INFO L85 PathProgramCache]: Analyzing trace with hash 1659678588, now seen corresponding path program 1 times [2021-11-23 12:31:06,627 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:31:06,627 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456617356] [2021-11-23 12:31:06,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:31:06,627 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:31:06,649 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 12:31:06,649 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [66756504] [2021-11-23 12:31:06,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:31:06,650 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 12:31:06,650 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5bf9f18-efbd-4e5c-be83-a58e3e0cf0ff/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 12:31:06,651 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5bf9f18-efbd-4e5c-be83-a58e3e0cf0ff/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 12:31:06,670 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5bf9f18-efbd-4e5c-be83-a58e3e0cf0ff/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-23 12:31:07,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:31:07,039 INFO L263 TraceCheckSpWp]: Trace formula consists of 276 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-23 12:31:07,041 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:31:07,168 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-23 12:31:07,169 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 12:31:07,291 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-23 12:31:07,291 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:31:07,291 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [456617356] [2021-11-23 12:31:07,291 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 12:31:07,292 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [66756504] [2021-11-23 12:31:07,292 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [66756504] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 12:31:07,292 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-23 12:31:07,292 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2021-11-23 12:31:07,292 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452433539] [2021-11-23 12:31:07,292 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-23 12:31:07,293 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 12:31:07,293 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:31:07,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 12:31:07,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-23 12:31:07,294 INFO L87 Difference]: Start difference. First operand 3253 states and 4304 transitions. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 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) [2021-11-23 12:31:07,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:31:07,447 INFO L93 Difference]: Finished difference Result 6473 states and 8581 transitions. [2021-11-23 12:31:07,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-23 12:31:07,448 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 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 66 [2021-11-23 12:31:07,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:31:07,477 INFO L225 Difference]: With dead ends: 6473 [2021-11-23 12:31:07,484 INFO L226 Difference]: Without dead ends: 3261 [2021-11-23 12:31:07,489 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2021-11-23 12:31:07,490 INFO L933 BasicCegarLoop]: 2236 mSDtfsCounter, 2189 mSDsluCounter, 4460 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2189 SdHoareTripleChecker+Valid, 6696 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 12:31:07,490 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2189 Valid, 6696 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 12:31:07,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3261 states. [2021-11-23 12:31:07,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3261 to 3259. [2021-11-23 12:31:07,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3259 states, 3251 states have (on average 1.3260535219932328) internal successors, (4311), 3258 states have internal predecessors, (4311), 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) [2021-11-23 12:31:07,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3259 states to 3259 states and 4311 transitions. [2021-11-23 12:31:07,601 INFO L78 Accepts]: Start accepts. Automaton has 3259 states and 4311 transitions. Word has length 66 [2021-11-23 12:31:07,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:31:07,602 INFO L470 AbstractCegarLoop]: Abstraction has 3259 states and 4311 transitions. [2021-11-23 12:31:07,603 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 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) [2021-11-23 12:31:07,603 INFO L276 IsEmpty]: Start isEmpty. Operand 3259 states and 4311 transitions. [2021-11-23 12:31:07,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-23 12:31:07,609 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:31:07,609 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:31:07,650 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5bf9f18-efbd-4e5c-be83-a58e3e0cf0ff/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-11-23 12:31:07,823 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5bf9f18-efbd-4e5c-be83-a58e3e0cf0ff/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-11-23 12:31:07,823 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-11-23 12:31:07,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:31:07,823 INFO L85 PathProgramCache]: Analyzing trace with hash 118579581, now seen corresponding path program 2 times [2021-11-23 12:31:07,824 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:31:07,824 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1006518635] [2021-11-23 12:31:07,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:31:07,824 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:31:07,843 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 12:31:07,851 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [966377590] [2021-11-23 12:31:07,851 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-23 12:31:07,852 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 12:31:07,852 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5bf9f18-efbd-4e5c-be83-a58e3e0cf0ff/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 12:31:07,853 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5bf9f18-efbd-4e5c-be83-a58e3e0cf0ff/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 12:31:07,875 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5bf9f18-efbd-4e5c-be83-a58e3e0cf0ff/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process