./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/bitvector/byte_add_2-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 9ad7fb26 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23320800-805f-482f-9677-97db74a92528/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23320800-805f-482f-9677-97db74a92528/bin/utaipan-aC7eJsxGYH/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23320800-805f-482f-9677-97db74a92528/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23320800-805f-482f-9677-97db74a92528/bin/utaipan-aC7eJsxGYH/config/TaipanReach.xml -i ../../sv-benchmarks/c/bitvector/byte_add_2-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23320800-805f-482f-9677-97db74a92528/bin/utaipan-aC7eJsxGYH/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23320800-805f-482f-9677-97db74a92528/bin/utaipan-aC7eJsxGYH --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 1ca669c5c5f3d15a10060ca34063758d600709fba25b0262fc21d3aca541d5a1 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 03:54:27,092 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 03:54:27,095 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 03:54:27,150 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 03:54:27,150 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 03:54:27,154 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 03:54:27,156 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 03:54:27,160 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 03:54:27,163 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 03:54:27,168 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 03:54:27,169 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 03:54:27,171 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 03:54:27,172 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 03:54:27,174 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 03:54:27,176 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 03:54:27,184 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 03:54:27,186 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 03:54:27,187 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 03:54:27,190 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 03:54:27,197 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 03:54:27,199 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 03:54:27,201 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 03:54:27,204 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 03:54:27,205 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 03:54:27,214 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 03:54:27,215 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 03:54:27,215 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 03:54:27,217 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 03:54:27,218 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 03:54:27,220 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 03:54:27,220 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 03:54:27,222 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 03:54:27,223 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 03:54:27,225 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 03:54:27,227 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 03:54:27,227 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 03:54:27,228 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 03:54:27,228 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 03:54:27,229 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 03:54:27,230 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 03:54:27,231 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 03:54:27,231 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23320800-805f-482f-9677-97db74a92528/bin/utaipan-aC7eJsxGYH/config/svcomp-Overflow-32bit-Taipan_Default.epf [2021-11-03 03:54:27,259 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 03:54:27,260 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 03:54:27,261 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 03:54:27,261 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 03:54:27,261 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 03:54:27,261 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 03:54:27,261 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-03 03:54:27,262 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 03:54:27,262 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 03:54:27,262 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-03 03:54:27,262 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-03 03:54:27,262 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 03:54:27,263 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-03 03:54:27,263 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-03 03:54:27,268 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-03 03:54:27,269 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 03:54:27,269 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-03 03:54:27,270 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-03 03:54:27,270 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-03 03:54:27,270 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-03 03:54:27,270 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 03:54:27,270 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 03:54:27,271 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 03:54:27,271 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 03:54:27,271 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-11-03 03:54:27,272 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-03 03:54:27,272 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 03:54:27,272 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 03:54:27,273 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 03:54:27,273 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 03:54:27,273 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 03:54:27,273 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 03:54:27,274 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 03:54:27,274 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 03:54:27,274 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 03:54:27,274 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-03 03:54:27,275 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-03 03:54:27,276 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 03:54:27,276 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 03:54:27,276 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 03:54:27,276 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_23320800-805f-482f-9677-97db74a92528/bin/utaipan-aC7eJsxGYH/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23320800-805f-482f-9677-97db74a92528/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1ca669c5c5f3d15a10060ca34063758d600709fba25b0262fc21d3aca541d5a1 [2021-11-03 03:54:27,527 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 03:54:27,558 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 03:54:27,560 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 03:54:27,562 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 03:54:27,562 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 03:54:27,563 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23320800-805f-482f-9677-97db74a92528/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/bitvector/byte_add_2-1.i [2021-11-03 03:54:27,657 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23320800-805f-482f-9677-97db74a92528/bin/utaipan-aC7eJsxGYH/data/aee1e38a2/142633cce9aa4e1ea407095fdda45640/FLAG6c92c6965 [2021-11-03 03:54:28,115 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 03:54:28,116 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23320800-805f-482f-9677-97db74a92528/sv-benchmarks/c/bitvector/byte_add_2-1.i [2021-11-03 03:54:28,129 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23320800-805f-482f-9677-97db74a92528/bin/utaipan-aC7eJsxGYH/data/aee1e38a2/142633cce9aa4e1ea407095fdda45640/FLAG6c92c6965 [2021-11-03 03:54:28,486 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23320800-805f-482f-9677-97db74a92528/bin/utaipan-aC7eJsxGYH/data/aee1e38a2/142633cce9aa4e1ea407095fdda45640 [2021-11-03 03:54:28,489 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 03:54:28,490 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 03:54:28,494 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 03:54:28,494 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 03:54:28,497 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 03:54:28,498 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:54:28" (1/1) ... [2021-11-03 03:54:28,500 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f5f22c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:54:28, skipping insertion in model container [2021-11-03 03:54:28,500 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:54:28" (1/1) ... [2021-11-03 03:54:28,507 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 03:54:28,528 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 03:54:28,697 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23320800-805f-482f-9677-97db74a92528/sv-benchmarks/c/bitvector/byte_add_2-1.i[863,876] [2021-11-03 03:54:28,733 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 03:54:28,742 INFO L203 MainTranslator]: Completed pre-run [2021-11-03 03:54:28,754 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23320800-805f-482f-9677-97db74a92528/sv-benchmarks/c/bitvector/byte_add_2-1.i[863,876] [2021-11-03 03:54:28,780 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 03:54:28,794 INFO L208 MainTranslator]: Completed translation [2021-11-03 03:54:28,797 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:54:28 WrapperNode [2021-11-03 03:54:28,797 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 03:54:28,799 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-03 03:54:28,799 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-03 03:54:28,799 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-03 03:54:28,811 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:54:28" (1/1) ... [2021-11-03 03:54:28,820 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:54:28" (1/1) ... [2021-11-03 03:54:28,859 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-03 03:54:28,860 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-03 03:54:28,860 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-03 03:54:28,860 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-03 03:54:28,886 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:54:28" (1/1) ... [2021-11-03 03:54:28,886 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:54:28" (1/1) ... [2021-11-03 03:54:28,897 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:54:28" (1/1) ... [2021-11-03 03:54:28,897 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:54:28" (1/1) ... [2021-11-03 03:54:28,904 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:54:28" (1/1) ... [2021-11-03 03:54:28,910 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:54:28" (1/1) ... [2021-11-03 03:54:28,928 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:54:28" (1/1) ... [2021-11-03 03:54:28,947 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-03 03:54:28,948 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-03 03:54:28,948 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-03 03:54:28,948 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-03 03:54:28,951 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:54:28" (1/1) ... [2021-11-03 03:54:28,959 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 03:54:28,971 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23320800-805f-482f-9677-97db74a92528/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 03:54:28,983 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23320800-805f-482f-9677-97db74a92528/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-03 03:54:29,011 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23320800-805f-482f-9677-97db74a92528/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-03 03:54:29,029 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-03 03:54:29,030 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-03 03:54:29,030 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-03 03:54:29,030 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-03 03:54:29,701 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-03 03:54:29,702 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2021-11-03 03:54:29,705 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:54:29 BoogieIcfgContainer [2021-11-03 03:54:29,705 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-03 03:54:29,707 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-03 03:54:29,707 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-03 03:54:29,711 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-03 03:54:29,711 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 03:54:28" (1/3) ... [2021-11-03 03:54:29,734 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15768c62 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:54:29, skipping insertion in model container [2021-11-03 03:54:29,735 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:54:28" (2/3) ... [2021-11-03 03:54:29,735 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15768c62 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:54:29, skipping insertion in model container [2021-11-03 03:54:29,735 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:54:29" (3/3) ... [2021-11-03 03:54:29,736 INFO L111 eAbstractionObserver]: Analyzing ICFG byte_add_2-1.i [2021-11-03 03:54:29,741 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-03 03:54:29,741 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 38 error locations. [2021-11-03 03:54:29,793 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-03 03:54:29,800 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 [2021-11-03 03:54:29,800 INFO L340 AbstractCegarLoop]: Starting to check reachability of 38 error locations. [2021-11-03 03:54:29,819 INFO L276 IsEmpty]: Start isEmpty. Operand has 99 states, 60 states have (on average 1.9333333333333333) internal successors, (116), 98 states have internal predecessors, (116), 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) [2021-11-03 03:54:29,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-11-03 03:54:29,824 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:54:29,825 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-11-03 03:54:29,826 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-11-03 03:54:29,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:54:29,832 INFO L85 PathProgramCache]: Analyzing trace with hash 291344, now seen corresponding path program 1 times [2021-11-03 03:54:29,842 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 03:54:29,843 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662550886] [2021-11-03 03:54:29,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:54:29,844 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:54:29,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:54:29,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:54:29,996 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 03:54:29,996 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662550886] [2021-11-03 03:54:29,997 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1662550886] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 03:54:29,997 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:54:29,997 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-11-03 03:54:29,999 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549466222] [2021-11-03 03:54:30,004 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-03 03:54:30,005 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 03:54:30,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-03 03:54:30,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-03 03:54:30,023 INFO L87 Difference]: Start difference. First operand has 99 states, 60 states have (on average 1.9333333333333333) internal successors, (116), 98 states have internal predecessors, (116), 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 2 states, 1 states have (on average 3.0) internal successors, (3), 2 states have internal predecessors, (3), 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) [2021-11-03 03:54:30,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:54:30,043 INFO L93 Difference]: Finished difference Result 99 states and 116 transitions. [2021-11-03 03:54:30,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-03 03:54:30,044 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 3.0) internal successors, (3), 2 states have internal predecessors, (3), 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 3 [2021-11-03 03:54:30,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:54:30,055 INFO L225 Difference]: With dead ends: 99 [2021-11-03 03:54:30,056 INFO L226 Difference]: Without dead ends: 60 [2021-11-03 03:54:30,060 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-03 03:54:30,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2021-11-03 03:54:30,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2021-11-03 03:54:30,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 59 states have (on average 1.305084745762712) internal successors, (77), 59 states have internal predecessors, (77), 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) [2021-11-03 03:54:30,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 77 transitions. [2021-11-03 03:54:30,112 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 77 transitions. Word has length 3 [2021-11-03 03:54:30,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:54:30,113 INFO L470 AbstractCegarLoop]: Abstraction has 60 states and 77 transitions. [2021-11-03 03:54:30,113 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 3.0) internal successors, (3), 2 states have internal predecessors, (3), 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) [2021-11-03 03:54:30,114 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 77 transitions. [2021-11-03 03:54:30,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-03 03:54:30,116 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:54:30,116 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:54:30,116 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-03 03:54:30,117 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-11-03 03:54:30,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:54:30,122 INFO L85 PathProgramCache]: Analyzing trace with hash -1014033563, now seen corresponding path program 1 times [2021-11-03 03:54:30,123 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 03:54:30,123 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2031794193] [2021-11-03 03:54:30,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:54:30,125 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:54:30,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:54:30,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:54:30,269 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 03:54:30,269 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2031794193] [2021-11-03 03:54:30,269 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2031794193] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 03:54:30,269 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:54:30,270 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-03 03:54:30,270 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503255076] [2021-11-03 03:54:30,271 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 03:54:30,272 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 03:54:30,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 03:54:30,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 03:54:30,273 INFO L87 Difference]: Start difference. First operand 60 states and 77 transitions. Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 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) [2021-11-03 03:54:30,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:54:30,375 INFO L93 Difference]: Finished difference Result 120 states and 160 transitions. [2021-11-03 03:54:30,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 03:54:30,376 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 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 12 [2021-11-03 03:54:30,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:54:30,377 INFO L225 Difference]: With dead ends: 120 [2021-11-03 03:54:30,378 INFO L226 Difference]: Without dead ends: 81 [2021-11-03 03:54:30,379 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 03:54:30,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2021-11-03 03:54:30,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 76. [2021-11-03 03:54:30,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 75 states have (on average 1.28) internal successors, (96), 75 states have internal predecessors, (96), 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) [2021-11-03 03:54:30,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 96 transitions. [2021-11-03 03:54:30,389 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 96 transitions. Word has length 12 [2021-11-03 03:54:30,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:54:30,390 INFO L470 AbstractCegarLoop]: Abstraction has 76 states and 96 transitions. [2021-11-03 03:54:30,390 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 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) [2021-11-03 03:54:30,390 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 96 transitions. [2021-11-03 03:54:30,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-03 03:54:30,404 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:54:30,404 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:54:30,404 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-03 03:54:30,405 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-11-03 03:54:30,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:54:30,409 INFO L85 PathProgramCache]: Analyzing trace with hash 681543350, now seen corresponding path program 1 times [2021-11-03 03:54:30,409 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 03:54:30,410 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156496967] [2021-11-03 03:54:30,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:54:30,411 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:54:30,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:54:30,640 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:54:30,641 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 03:54:30,641 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156496967] [2021-11-03 03:54:30,641 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1156496967] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-03 03:54:30,641 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [136319501] [2021-11-03 03:54:30,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:54:30,642 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 03:54:30,642 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23320800-805f-482f-9677-97db74a92528/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 03:54:30,651 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23320800-805f-482f-9677-97db74a92528/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 03:54:30,667 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23320800-805f-482f-9677-97db74a92528/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-03 03:54:30,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:54:30,728 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-03 03:54:30,733 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:54:30,909 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:54:30,910 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:54:31,157 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:54:31,158 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [136319501] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-03 03:54:31,158 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2021-11-03 03:54:31,159 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 8 [2021-11-03 03:54:31,159 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722648027] [2021-11-03 03:54:31,160 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 03:54:31,160 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 03:54:31,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 03:54:31,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-11-03 03:54:31,163 INFO L87 Difference]: Start difference. First operand 76 states and 96 transitions. Second operand has 5 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 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) [2021-11-03 03:54:31,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:54:31,408 INFO L93 Difference]: Finished difference Result 116 states and 154 transitions. [2021-11-03 03:54:31,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 03:54:31,408 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 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 15 [2021-11-03 03:54:31,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:54:31,410 INFO L225 Difference]: With dead ends: 116 [2021-11-03 03:54:31,410 INFO L226 Difference]: Without dead ends: 106 [2021-11-03 03:54:31,411 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-11-03 03:54:31,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2021-11-03 03:54:31,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 73. [2021-11-03 03:54:31,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 72 states have (on average 1.2638888888888888) internal successors, (91), 72 states have internal predecessors, (91), 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) [2021-11-03 03:54:31,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 91 transitions. [2021-11-03 03:54:31,419 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 91 transitions. Word has length 15 [2021-11-03 03:54:31,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:54:31,420 INFO L470 AbstractCegarLoop]: Abstraction has 73 states and 91 transitions. [2021-11-03 03:54:31,420 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 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) [2021-11-03 03:54:31,420 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 91 transitions. [2021-11-03 03:54:31,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-03 03:54:31,421 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:54:31,421 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:54:31,456 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23320800-805f-482f-9677-97db74a92528/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-03 03:54:31,647 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23320800-805f-482f-9677-97db74a92528/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 03:54:31,648 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-11-03 03:54:31,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:54:31,648 INFO L85 PathProgramCache]: Analyzing trace with hash 1813983830, now seen corresponding path program 1 times [2021-11-03 03:54:31,649 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 03:54:31,649 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [356452308] [2021-11-03 03:54:31,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:54:31,649 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:54:31,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:54:31,757 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:54:31,757 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 03:54:31,758 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [356452308] [2021-11-03 03:54:31,758 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [356452308] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 03:54:31,758 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:54:31,758 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-03 03:54:31,759 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731959590] [2021-11-03 03:54:31,759 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 03:54:31,759 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 03:54:31,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 03:54:31,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-03 03:54:31,760 INFO L87 Difference]: Start difference. First operand 73 states and 91 transitions. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 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) [2021-11-03 03:54:31,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:54:31,902 INFO L93 Difference]: Finished difference Result 118 states and 148 transitions. [2021-11-03 03:54:31,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-03 03:54:31,903 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 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 18 [2021-11-03 03:54:31,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:54:31,908 INFO L225 Difference]: With dead ends: 118 [2021-11-03 03:54:31,908 INFO L226 Difference]: Without dead ends: 81 [2021-11-03 03:54:31,909 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-11-03 03:54:31,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2021-11-03 03:54:31,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 74. [2021-11-03 03:54:31,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 73 states have (on average 1.2602739726027397) internal successors, (92), 73 states have internal predecessors, (92), 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) [2021-11-03 03:54:31,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 92 transitions. [2021-11-03 03:54:31,935 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 92 transitions. Word has length 18 [2021-11-03 03:54:31,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:54:31,936 INFO L470 AbstractCegarLoop]: Abstraction has 74 states and 92 transitions. [2021-11-03 03:54:31,936 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 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) [2021-11-03 03:54:31,936 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 92 transitions. [2021-11-03 03:54:31,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-03 03:54:31,939 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:54:31,939 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:54:31,940 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-03 03:54:31,941 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-11-03 03:54:31,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:54:31,942 INFO L85 PathProgramCache]: Analyzing trace with hash 330970084, now seen corresponding path program 1 times [2021-11-03 03:54:31,943 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 03:54:31,943 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404292446] [2021-11-03 03:54:31,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:54:31,944 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:54:31,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:54:32,072 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:54:32,073 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 03:54:32,073 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [404292446] [2021-11-03 03:54:32,073 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [404292446] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 03:54:32,073 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:54:32,074 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-03 03:54:32,074 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678467696] [2021-11-03 03:54:32,074 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 03:54:32,074 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 03:54:32,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 03:54:32,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 03:54:32,075 INFO L87 Difference]: Start difference. First operand 74 states and 92 transitions. Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 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) [2021-11-03 03:54:32,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:54:32,229 INFO L93 Difference]: Finished difference Result 156 states and 211 transitions. [2021-11-03 03:54:32,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 03:54:32,229 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 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 24 [2021-11-03 03:54:32,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:54:32,231 INFO L225 Difference]: With dead ends: 156 [2021-11-03 03:54:32,231 INFO L226 Difference]: Without dead ends: 118 [2021-11-03 03:54:32,232 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-03 03:54:32,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2021-11-03 03:54:32,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 88. [2021-11-03 03:54:32,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 87 states have (on average 1.2873563218390804) internal successors, (112), 87 states have internal predecessors, (112), 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) [2021-11-03 03:54:32,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 112 transitions. [2021-11-03 03:54:32,248 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 112 transitions. Word has length 24 [2021-11-03 03:54:32,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:54:32,249 INFO L470 AbstractCegarLoop]: Abstraction has 88 states and 112 transitions. [2021-11-03 03:54:32,252 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 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) [2021-11-03 03:54:32,253 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 112 transitions. [2021-11-03 03:54:32,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-11-03 03:54:32,255 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:54:32,255 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:54:32,256 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-03 03:54:32,256 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-11-03 03:54:32,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:54:32,257 INFO L85 PathProgramCache]: Analyzing trace with hash -1247168619, now seen corresponding path program 1 times [2021-11-03 03:54:32,262 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 03:54:32,263 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2117076738] [2021-11-03 03:54:32,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:54:32,263 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:54:32,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:54:32,430 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-03 03:54:32,431 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 03:54:32,431 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2117076738] [2021-11-03 03:54:32,431 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2117076738] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 03:54:32,431 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:54:32,431 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-03 03:54:32,431 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974118724] [2021-11-03 03:54:32,432 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 03:54:32,432 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 03:54:32,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 03:54:32,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 03:54:32,433 INFO L87 Difference]: Start difference. First operand 88 states and 112 transitions. Second operand has 4 states, 4 states have (on average 6.75) internal successors, (27), 3 states have internal predecessors, (27), 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) [2021-11-03 03:54:32,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:54:32,544 INFO L93 Difference]: Finished difference Result 244 states and 307 transitions. [2021-11-03 03:54:32,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 03:54:32,544 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 3 states have internal predecessors, (27), 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 30 [2021-11-03 03:54:32,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:54:32,545 INFO L225 Difference]: With dead ends: 244 [2021-11-03 03:54:32,546 INFO L226 Difference]: Without dead ends: 180 [2021-11-03 03:54:32,548 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-03 03:54:32,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2021-11-03 03:54:32,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 101. [2021-11-03 03:54:32,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 100 states have (on average 1.28) internal successors, (128), 100 states have internal predecessors, (128), 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) [2021-11-03 03:54:32,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 128 transitions. [2021-11-03 03:54:32,559 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 128 transitions. Word has length 30 [2021-11-03 03:54:32,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:54:32,559 INFO L470 AbstractCegarLoop]: Abstraction has 101 states and 128 transitions. [2021-11-03 03:54:32,559 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 3 states have internal predecessors, (27), 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) [2021-11-03 03:54:32,559 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 128 transitions. [2021-11-03 03:54:32,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-11-03 03:54:32,561 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:54:32,561 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:54:32,561 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-03 03:54:32,562 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-11-03 03:54:32,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:54:32,562 INFO L85 PathProgramCache]: Analyzing trace with hash 1003673977, now seen corresponding path program 1 times [2021-11-03 03:54:32,562 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 03:54:32,562 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [133200003] [2021-11-03 03:54:32,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:54:32,563 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:54:32,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:54:32,677 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-03 03:54:32,678 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 03:54:32,678 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [133200003] [2021-11-03 03:54:32,678 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [133200003] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 03:54:32,678 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:54:32,679 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-03 03:54:32,679 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670755769] [2021-11-03 03:54:32,679 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 03:54:32,679 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 03:54:32,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 03:54:32,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 03:54:32,680 INFO L87 Difference]: Start difference. First operand 101 states and 128 transitions. Second operand has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 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) [2021-11-03 03:54:32,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:54:32,785 INFO L93 Difference]: Finished difference Result 250 states and 313 transitions. [2021-11-03 03:54:32,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 03:54:32,785 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 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 30 [2021-11-03 03:54:32,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:54:32,787 INFO L225 Difference]: With dead ends: 250 [2021-11-03 03:54:32,787 INFO L226 Difference]: Without dead ends: 187 [2021-11-03 03:54:32,788 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-03 03:54:32,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2021-11-03 03:54:32,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 113. [2021-11-03 03:54:32,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 112 states have (on average 1.2589285714285714) internal successors, (141), 112 states have internal predecessors, (141), 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) [2021-11-03 03:54:32,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 141 transitions. [2021-11-03 03:54:32,795 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 141 transitions. Word has length 30 [2021-11-03 03:54:32,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:54:32,795 INFO L470 AbstractCegarLoop]: Abstraction has 113 states and 141 transitions. [2021-11-03 03:54:32,795 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 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) [2021-11-03 03:54:32,795 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 141 transitions. [2021-11-03 03:54:32,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-03 03:54:32,797 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:54:32,797 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:54:32,797 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-03 03:54:32,798 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-11-03 03:54:32,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:54:32,798 INFO L85 PathProgramCache]: Analyzing trace with hash -1592578103, now seen corresponding path program 1 times [2021-11-03 03:54:32,798 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 03:54:32,799 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860171040] [2021-11-03 03:54:32,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:54:32,799 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:54:32,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:54:32,979 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-03 03:54:32,979 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 03:54:32,979 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1860171040] [2021-11-03 03:54:32,979 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1860171040] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-03 03:54:32,980 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [769960917] [2021-11-03 03:54:32,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:54:32,980 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 03:54:32,980 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23320800-805f-482f-9677-97db74a92528/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 03:54:32,987 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23320800-805f-482f-9677-97db74a92528/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 03:54:33,010 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23320800-805f-482f-9677-97db74a92528/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-03 03:54:33,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:54:33,110 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-03 03:54:33,112 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:54:33,510 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:54:33,510 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:54:33,769 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:54:33,769 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [769960917] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 03:54:33,769 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [312959158] [2021-11-03 03:54:33,798 INFO L159 IcfgInterpreter]: Started Sifa with 27 locations of interest [2021-11-03 03:54:33,798 INFO L166 IcfgInterpreter]: Building call graph [2021-11-03 03:54:33,805 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-03 03:54:33,811 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-03 03:54:33,812 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-03 03:54:33,881 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:54:33,883 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 03:54:33,883 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:54:33,884 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-11-03 03:54:33,885 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 03:54:33,886 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:54:33,886 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-11-03 03:54:33,889 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 143 [2021-11-03 03:54:33,912 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_8|], 10=[|v_#valid_9|]} [2021-11-03 03:54:33,925 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:54:33,932 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2021-11-03 03:54:33,937 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:54:33,937 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-11-03 03:54:33,938 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:54:33,939 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-11-03 03:54:33,939 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-03 03:54:33,941 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:54:33,955 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:54:33,960 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:54:33,962 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:54:33,963 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:54:33,971 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:54:33,974 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-11-03 03:54:33,975 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:54:33,978 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-03 03:54:33,979 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:54:33,979 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-03 03:54:33,980 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-03 03:54:33,980 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:54:33,990 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:54:33,993 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:54:33,996 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 125 [2021-11-03 03:54:33,997 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-03 03:54:33,997 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:140, output treesize:125 [2021-11-03 03:54:34,011 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:54:34,016 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 130 [2021-11-03 03:54:34,056 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:54:34,068 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 169 [2021-11-03 03:54:34,082 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-03 03:54:36,584 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [312959158] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 03:54:36,584 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2021-11-03 03:54:36,584 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [7, 7, 6] total 23 [2021-11-03 03:54:36,585 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388387935] [2021-11-03 03:54:36,585 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-03 03:54:36,585 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 03:54:36,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-03 03:54:36,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=409, Unknown=0, NotChecked=0, Total=506 [2021-11-03 03:54:36,586 INFO L87 Difference]: Start difference. First operand 113 states and 141 transitions. Second operand has 9 states, 9 states have (on average 3.111111111111111) internal successors, (28), 8 states have internal predecessors, (28), 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) [2021-11-03 03:54:37,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:54:37,344 INFO L93 Difference]: Finished difference Result 341 states and 425 transitions. [2021-11-03 03:54:37,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-03 03:54:37,345 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.111111111111111) internal successors, (28), 8 states have internal predecessors, (28), 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 33 [2021-11-03 03:54:37,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:54:37,347 INFO L225 Difference]: With dead ends: 341 [2021-11-03 03:54:37,347 INFO L226 Difference]: Without dead ends: 254 [2021-11-03 03:54:37,348 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 84 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 158 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=97, Invalid=409, Unknown=0, NotChecked=0, Total=506 [2021-11-03 03:54:37,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2021-11-03 03:54:37,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 102. [2021-11-03 03:54:37,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 101 states have (on average 1.2574257425742574) internal successors, (127), 101 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:54:37,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 127 transitions. [2021-11-03 03:54:37,355 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 127 transitions. Word has length 33 [2021-11-03 03:54:37,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:54:37,355 INFO L470 AbstractCegarLoop]: Abstraction has 102 states and 127 transitions. [2021-11-03 03:54:37,356 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.111111111111111) internal successors, (28), 8 states have internal predecessors, (28), 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) [2021-11-03 03:54:37,356 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 127 transitions. [2021-11-03 03:54:37,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-03 03:54:37,357 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:54:37,357 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:54:37,399 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23320800-805f-482f-9677-97db74a92528/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-03 03:54:37,580 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23320800-805f-482f-9677-97db74a92528/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 03:54:37,581 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-11-03 03:54:37,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:54:37,581 INFO L85 PathProgramCache]: Analyzing trace with hash 884430696, now seen corresponding path program 1 times [2021-11-03 03:54:37,581 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 03:54:37,581 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354884260] [2021-11-03 03:54:37,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:54:37,581 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:54:37,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:54:37,708 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-03 03:54:37,709 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 03:54:37,709 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [354884260] [2021-11-03 03:54:37,709 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [354884260] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-03 03:54:37,709 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1393621304] [2021-11-03 03:54:37,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:54:37,709 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 03:54:37,710 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23320800-805f-482f-9677-97db74a92528/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 03:54:37,710 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23320800-805f-482f-9677-97db74a92528/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 03:54:37,721 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23320800-805f-482f-9677-97db74a92528/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-03 03:54:37,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:54:37,849 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-03 03:54:37,851 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:54:38,168 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:54:38,168 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:54:38,590 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:54:38,590 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1393621304] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-03 03:54:38,590 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2021-11-03 03:54:38,591 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 6] total 15 [2021-11-03 03:54:38,591 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146025069] [2021-11-03 03:54:38,591 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 03:54:38,591 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 03:54:38,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 03:54:38,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2021-11-03 03:54:38,592 INFO L87 Difference]: Start difference. First operand 102 states and 127 transitions. Second operand has 6 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 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) [2021-11-03 03:54:38,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:54:38,718 INFO L93 Difference]: Finished difference Result 242 states and 308 transitions. [2021-11-03 03:54:38,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-03 03:54:38,719 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 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 36 [2021-11-03 03:54:38,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:54:38,720 INFO L225 Difference]: With dead ends: 242 [2021-11-03 03:54:38,720 INFO L226 Difference]: Without dead ends: 179 [2021-11-03 03:54:38,721 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2021-11-03 03:54:38,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2021-11-03 03:54:38,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 163. [2021-11-03 03:54:38,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 162 states have (on average 1.2654320987654322) internal successors, (205), 162 states have internal predecessors, (205), 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) [2021-11-03 03:54:38,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 205 transitions. [2021-11-03 03:54:38,730 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 205 transitions. Word has length 36 [2021-11-03 03:54:38,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:54:38,730 INFO L470 AbstractCegarLoop]: Abstraction has 163 states and 205 transitions. [2021-11-03 03:54:38,731 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 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) [2021-11-03 03:54:38,731 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 205 transitions. [2021-11-03 03:54:38,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-11-03 03:54:38,732 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:54:38,732 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:54:38,770 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23320800-805f-482f-9677-97db74a92528/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-03 03:54:38,959 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23320800-805f-482f-9677-97db74a92528/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-11-03 03:54:38,960 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-11-03 03:54:38,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:54:38,960 INFO L85 PathProgramCache]: Analyzing trace with hash -2127497605, now seen corresponding path program 1 times [2021-11-03 03:54:38,960 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 03:54:38,960 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [708358914] [2021-11-03 03:54:38,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:54:38,961 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:54:38,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:54:39,046 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-03 03:54:39,046 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 03:54:39,046 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [708358914] [2021-11-03 03:54:39,047 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [708358914] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 03:54:39,047 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:54:39,048 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-03 03:54:39,048 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464472088] [2021-11-03 03:54:39,048 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 03:54:39,048 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 03:54:39,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 03:54:39,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 03:54:39,049 INFO L87 Difference]: Start difference. First operand 163 states and 205 transitions. Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 2 states have internal predecessors, (34), 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) [2021-11-03 03:54:39,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:54:39,055 INFO L93 Difference]: Finished difference Result 170 states and 211 transitions. [2021-11-03 03:54:39,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 03:54:39,056 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 2 states have internal predecessors, (34), 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 39 [2021-11-03 03:54:39,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:54:39,057 INFO L225 Difference]: With dead ends: 170 [2021-11-03 03:54:39,057 INFO L226 Difference]: Without dead ends: 94 [2021-11-03 03:54:39,058 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 03:54:39,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2021-11-03 03:54:39,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 94. [2021-11-03 03:54:39,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 93 states have (on average 1.2258064516129032) internal successors, (114), 93 states have internal predecessors, (114), 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) [2021-11-03 03:54:39,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 114 transitions. [2021-11-03 03:54:39,065 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 114 transitions. Word has length 39 [2021-11-03 03:54:39,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:54:39,065 INFO L470 AbstractCegarLoop]: Abstraction has 94 states and 114 transitions. [2021-11-03 03:54:39,065 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 2 states have internal predecessors, (34), 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) [2021-11-03 03:54:39,065 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 114 transitions. [2021-11-03 03:54:39,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-11-03 03:54:39,069 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:54:39,070 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:54:39,070 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-03 03:54:39,071 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-11-03 03:54:39,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:54:39,072 INFO L85 PathProgramCache]: Analyzing trace with hash 1304553353, now seen corresponding path program 1 times [2021-11-03 03:54:39,072 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 03:54:39,072 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1946753585] [2021-11-03 03:54:39,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:54:39,072 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:54:39,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:54:39,216 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 11 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:54:39,217 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 03:54:39,217 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1946753585] [2021-11-03 03:54:39,217 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1946753585] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-03 03:54:39,217 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1661608666] [2021-11-03 03:54:39,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:54:39,217 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 03:54:39,218 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23320800-805f-482f-9677-97db74a92528/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 03:54:39,223 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23320800-805f-482f-9677-97db74a92528/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 03:54:39,243 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23320800-805f-482f-9677-97db74a92528/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-03 03:54:39,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:54:39,378 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-03 03:54:39,381 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:54:39,802 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 9 proven. 8 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-11-03 03:54:39,802 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:54:40,004 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 9 proven. 8 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-11-03 03:54:40,004 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1661608666] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 03:54:40,004 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [330980390] [2021-11-03 03:54:40,012 INFO L159 IcfgInterpreter]: Started Sifa with 32 locations of interest [2021-11-03 03:54:40,012 INFO L166 IcfgInterpreter]: Building call graph [2021-11-03 03:54:40,012 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-03 03:54:40,013 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-03 03:54:40,013 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-03 03:54:40,065 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:54:40,066 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 03:54:40,067 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:54:40,067 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-11-03 03:54:40,069 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 03:54:40,070 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:54:40,070 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-11-03 03:54:40,072 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 143 [2021-11-03 03:54:40,075 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_9|], 10=[|v_#valid_10|]} [2021-11-03 03:54:40,092 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:54:40,093 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2021-11-03 03:54:40,093 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:54:40,093 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-11-03 03:54:40,094 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:54:40,094 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-11-03 03:54:40,095 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-03 03:54:40,095 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:54:40,101 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:54:40,105 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:54:40,106 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:54:40,107 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:54:40,113 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:54:40,114 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-11-03 03:54:40,115 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:54:40,117 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-03 03:54:40,117 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:54:40,118 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-03 03:54:40,118 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-03 03:54:40,118 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:54:40,124 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:54:40,125 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:54:40,127 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 125 [2021-11-03 03:54:40,128 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-03 03:54:40,128 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:140, output treesize:125 [2021-11-03 03:54:40,137 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:54:40,139 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 130 [2021-11-03 03:54:40,150 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:54:40,153 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 135 [2021-11-03 03:54:40,187 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:54:40,195 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 180 [2021-11-03 03:54:40,206 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-03 03:54:44,318 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [330980390] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 03:54:44,318 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2021-11-03 03:54:44,318 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [7, 7, 7] total 22 [2021-11-03 03:54:44,319 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907084519] [2021-11-03 03:54:44,319 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-03 03:54:44,319 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 03:54:44,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-03 03:54:44,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=375, Unknown=0, NotChecked=0, Total=462 [2021-11-03 03:54:44,321 INFO L87 Difference]: Start difference. First operand 94 states and 114 transitions. Second operand has 11 states, 11 states have (on average 3.090909090909091) internal successors, (34), 10 states have internal predecessors, (34), 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) [2021-11-03 03:54:45,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:54:45,555 INFO L93 Difference]: Finished difference Result 412 states and 497 transitions. [2021-11-03 03:54:45,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-03 03:54:45,557 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.090909090909091) internal successors, (34), 10 states have internal predecessors, (34), 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 52 [2021-11-03 03:54:45,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:54:45,559 INFO L225 Difference]: With dead ends: 412 [2021-11-03 03:54:45,559 INFO L226 Difference]: Without dead ends: 339 [2021-11-03 03:54:45,560 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 141 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 174 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=87, Invalid=375, Unknown=0, NotChecked=0, Total=462 [2021-11-03 03:54:45,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339 states. [2021-11-03 03:54:45,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339 to 94. [2021-11-03 03:54:45,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 93 states have (on average 1.2258064516129032) internal successors, (114), 93 states have internal predecessors, (114), 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) [2021-11-03 03:54:45,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 114 transitions. [2021-11-03 03:54:45,575 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 114 transitions. Word has length 52 [2021-11-03 03:54:45,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:54:45,576 INFO L470 AbstractCegarLoop]: Abstraction has 94 states and 114 transitions. [2021-11-03 03:54:45,576 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.090909090909091) internal successors, (34), 10 states have internal predecessors, (34), 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) [2021-11-03 03:54:45,576 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 114 transitions. [2021-11-03 03:54:45,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-11-03 03:54:45,577 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:54:45,577 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:54:45,613 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23320800-805f-482f-9677-97db74a92528/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-03 03:54:45,777 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23320800-805f-482f-9677-97db74a92528/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-11-03 03:54:45,778 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-11-03 03:54:45,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:54:45,778 INFO L85 PathProgramCache]: Analyzing trace with hash 1366781224, now seen corresponding path program 1 times [2021-11-03 03:54:45,778 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 03:54:45,779 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226625391] [2021-11-03 03:54:45,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:54:45,779 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:54:45,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:54:45,933 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 27 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-03 03:54:45,934 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 03:54:45,934 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226625391] [2021-11-03 03:54:45,934 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [226625391] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-03 03:54:45,934 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1742306983] [2021-11-03 03:54:45,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:54:45,935 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 03:54:45,935 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23320800-805f-482f-9677-97db74a92528/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 03:54:45,942 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23320800-805f-482f-9677-97db74a92528/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 03:54:45,943 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23320800-805f-482f-9677-97db74a92528/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-03 03:54:46,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:54:46,109 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-03 03:54:46,116 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:54:46,672 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 13 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-03 03:54:46,672 INFO L328 TraceCheckSpWp]: Computing backward predicates...