./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/loop-zilu/benchmark34_conjunctive.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version e943c265 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b1d5974-8e8a-4699-8914-c3051bc8d5a7/bin/utaipan-9zjyvhn0QE/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b1d5974-8e8a-4699-8914-c3051bc8d5a7/bin/utaipan-9zjyvhn0QE/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b1d5974-8e8a-4699-8914-c3051bc8d5a7/bin/utaipan-9zjyvhn0QE/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b1d5974-8e8a-4699-8914-c3051bc8d5a7/bin/utaipan-9zjyvhn0QE/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-zilu/benchmark34_conjunctive.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b1d5974-8e8a-4699-8914-c3051bc8d5a7/bin/utaipan-9zjyvhn0QE/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b1d5974-8e8a-4699-8914-c3051bc8d5a7/bin/utaipan-9zjyvhn0QE --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 0414607cdfaf86248673acc731020b311087823754eb03e229e19e48245fa120 .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-e943c26 [2021-10-24 09:55:44,846 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-24 09:55:44,848 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-24 09:55:44,899 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-24 09:55:44,899 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-24 09:55:44,901 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-24 09:55:44,903 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-24 09:55:44,905 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-24 09:55:44,908 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-24 09:55:44,909 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-24 09:55:44,910 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-24 09:55:44,912 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-24 09:55:44,912 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-24 09:55:44,914 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-24 09:55:44,916 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-24 09:55:44,918 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-24 09:55:44,919 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-24 09:55:44,920 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-24 09:55:44,923 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-24 09:55:44,926 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-24 09:55:44,928 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-24 09:55:44,940 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-24 09:55:44,942 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-24 09:55:44,943 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-24 09:55:44,951 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-24 09:55:44,955 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-24 09:55:44,956 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-24 09:55:44,957 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-24 09:55:44,958 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-24 09:55:44,960 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-24 09:55:44,960 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-24 09:55:44,961 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-24 09:55:44,962 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-24 09:55:44,962 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-24 09:55:44,963 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-24 09:55:44,964 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-24 09:55:44,965 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-24 09:55:44,965 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-24 09:55:44,965 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-24 09:55:44,966 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-24 09:55:44,967 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-24 09:55:44,968 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b1d5974-8e8a-4699-8914-c3051bc8d5a7/bin/utaipan-9zjyvhn0QE/config/svcomp-Overflow-32bit-Taipan_Default.epf [2021-10-24 09:55:44,998 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-24 09:55:44,998 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-24 09:55:44,999 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-24 09:55:44,999 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-24 09:55:45,000 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-24 09:55:45,000 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-24 09:55:45,000 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-24 09:55:45,000 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-24 09:55:45,000 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-24 09:55:45,001 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-24 09:55:45,001 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-24 09:55:45,001 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-24 09:55:45,001 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-24 09:55:45,001 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-24 09:55:45,002 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-24 09:55:45,002 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-24 09:55:45,003 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-24 09:55:45,003 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-24 09:55:45,003 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-24 09:55:45,003 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-24 09:55:45,003 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-24 09:55:45,004 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-24 09:55:45,004 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-24 09:55:45,004 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-24 09:55:45,004 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-10-24 09:55:45,004 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-24 09:55:45,004 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-24 09:55:45,005 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-24 09:55:45,005 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-24 09:55:45,005 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-24 09:55:45,005 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-24 09:55:45,006 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-24 09:55:45,006 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-24 09:55:45,006 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-24 09:55:45,006 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-24 09:55:45,006 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-24 09:55:45,007 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-24 09:55:45,007 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-24 09:55:45,007 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-24 09:55:45,007 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-24 09:55:45,008 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_8b1d5974-8e8a-4699-8914-c3051bc8d5a7/bin/utaipan-9zjyvhn0QE/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b1d5974-8e8a-4699-8914-c3051bc8d5a7/bin/utaipan-9zjyvhn0QE Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0414607cdfaf86248673acc731020b311087823754eb03e229e19e48245fa120 [2021-10-24 09:55:45,301 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-24 09:55:45,325 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-24 09:55:45,327 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-24 09:55:45,329 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-24 09:55:45,330 INFO L275 PluginConnector]: CDTParser initialized [2021-10-24 09:55:45,331 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b1d5974-8e8a-4699-8914-c3051bc8d5a7/bin/utaipan-9zjyvhn0QE/../../sv-benchmarks/c/loop-zilu/benchmark34_conjunctive.i [2021-10-24 09:55:45,422 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b1d5974-8e8a-4699-8914-c3051bc8d5a7/bin/utaipan-9zjyvhn0QE/data/8a01cddf7/5960af0b772d461495b1dddbcbd67af5/FLAG53eb469c3 [2021-10-24 09:55:45,905 INFO L306 CDTParser]: Found 1 translation units. [2021-10-24 09:55:45,905 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b1d5974-8e8a-4699-8914-c3051bc8d5a7/sv-benchmarks/c/loop-zilu/benchmark34_conjunctive.i [2021-10-24 09:55:45,920 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b1d5974-8e8a-4699-8914-c3051bc8d5a7/bin/utaipan-9zjyvhn0QE/data/8a01cddf7/5960af0b772d461495b1dddbcbd67af5/FLAG53eb469c3 [2021-10-24 09:55:46,255 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b1d5974-8e8a-4699-8914-c3051bc8d5a7/bin/utaipan-9zjyvhn0QE/data/8a01cddf7/5960af0b772d461495b1dddbcbd67af5 [2021-10-24 09:55:46,258 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-24 09:55:46,260 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-24 09:55:46,272 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-24 09:55:46,272 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-24 09:55:46,275 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-24 09:55:46,277 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:55:46" (1/1) ... [2021-10-24 09:55:46,280 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@9ecbb31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:55:46, skipping insertion in model container [2021-10-24 09:55:46,281 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:55:46" (1/1) ... [2021-10-24 09:55:46,289 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-24 09:55:46,305 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-24 09:55:46,492 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_8b1d5974-8e8a-4699-8914-c3051bc8d5a7/sv-benchmarks/c/loop-zilu/benchmark34_conjunctive.i[873,886] [2021-10-24 09:55:46,500 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 09:55:46,508 INFO L203 MainTranslator]: Completed pre-run [2021-10-24 09:55:46,520 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_8b1d5974-8e8a-4699-8914-c3051bc8d5a7/sv-benchmarks/c/loop-zilu/benchmark34_conjunctive.i[873,886] [2021-10-24 09:55:46,523 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 09:55:46,536 INFO L208 MainTranslator]: Completed translation [2021-10-24 09:55:46,536 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:55:46 WrapperNode [2021-10-24 09:55:46,537 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-24 09:55:46,538 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-24 09:55:46,538 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-24 09:55:46,538 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-24 09:55:46,553 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:55:46" (1/1) ... [2021-10-24 09:55:46,561 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:55:46" (1/1) ... [2021-10-24 09:55:46,581 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-24 09:55:46,582 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-24 09:55:46,583 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-24 09:55:46,583 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-24 09:55:46,592 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:55:46" (1/1) ... [2021-10-24 09:55:46,592 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:55:46" (1/1) ... [2021-10-24 09:55:46,593 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:55:46" (1/1) ... [2021-10-24 09:55:46,594 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:55:46" (1/1) ... [2021-10-24 09:55:46,598 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:55:46" (1/1) ... [2021-10-24 09:55:46,602 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:55:46" (1/1) ... [2021-10-24 09:55:46,603 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:55:46" (1/1) ... [2021-10-24 09:55:46,605 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-24 09:55:46,606 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-24 09:55:46,606 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-24 09:55:46,606 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-24 09:55:46,607 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:55:46" (1/1) ... [2021-10-24 09:55:46,616 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-24 09:55:46,632 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b1d5974-8e8a-4699-8914-c3051bc8d5a7/bin/utaipan-9zjyvhn0QE/z3 [2021-10-24 09:55:46,669 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b1d5974-8e8a-4699-8914-c3051bc8d5a7/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-24 09:55:46,693 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b1d5974-8e8a-4699-8914-c3051bc8d5a7/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-24 09:55:46,730 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-24 09:55:46,732 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-24 09:55:46,732 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-24 09:55:46,732 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-24 09:55:47,065 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-24 09:55:47,065 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-10-24 09:55:47,067 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:55:47 BoogieIcfgContainer [2021-10-24 09:55:47,068 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-24 09:55:47,070 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-24 09:55:47,070 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-24 09:55:47,073 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-24 09:55:47,086 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 09:55:46" (1/3) ... [2021-10-24 09:55:47,087 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b147ac8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 09:55:47, skipping insertion in model container [2021-10-24 09:55:47,087 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:55:46" (2/3) ... [2021-10-24 09:55:47,088 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b147ac8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 09:55:47, skipping insertion in model container [2021-10-24 09:55:47,088 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:55:47" (3/3) ... [2021-10-24 09:55:47,090 INFO L111 eAbstractionObserver]: Analyzing ICFG benchmark34_conjunctive.i [2021-10-24 09:55:47,095 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-24 09:55:47,095 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2021-10-24 09:55:47,179 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-24 09:55:47,190 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 [2021-10-24 09:55:47,191 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-10-24 09:55:47,206 INFO L276 IsEmpty]: Start isEmpty. Operand has 13 states, 8 states have (on average 1.75) internal successors, (14), 12 states have internal predecessors, (14), 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) [2021-10-24 09:55:47,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-24 09:55:47,211 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 09:55:47,212 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-24 09:55:47,212 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-10-24 09:55:47,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 09:55:47,219 INFO L82 PathProgramCache]: Analyzing trace with hash 2092610, now seen corresponding path program 1 times [2021-10-24 09:55:47,230 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 09:55:47,230 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203280811] [2021-10-24 09:55:47,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 09:55:47,232 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 09:55:47,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 09:55:47,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:55:47,406 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 09:55:47,407 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [203280811] [2021-10-24 09:55:47,408 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [203280811] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-24 09:55:47,408 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-24 09:55:47,408 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-24 09:55:47,410 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396645023] [2021-10-24 09:55:47,415 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-24 09:55:47,416 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 09:55:47,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-24 09:55:47,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-24 09:55:47,432 INFO L87 Difference]: Start difference. First operand has 13 states, 8 states have (on average 1.75) internal successors, (14), 12 states have internal predecessors, (14), 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 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 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) [2021-10-24 09:55:47,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 09:55:47,491 INFO L93 Difference]: Finished difference Result 20 states and 21 transitions. [2021-10-24 09:55:47,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-24 09:55:47,493 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 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 4 [2021-10-24 09:55:47,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 09:55:47,501 INFO L225 Difference]: With dead ends: 20 [2021-10-24 09:55:47,501 INFO L226 Difference]: Without dead ends: 15 [2021-10-24 09:55:47,504 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 19.0ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-24 09:55:47,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2021-10-24 09:55:47,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 13. [2021-10-24 09:55:47,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 12 states have internal predecessors, (13), 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) [2021-10-24 09:55:47,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2021-10-24 09:55:47,537 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 4 [2021-10-24 09:55:47,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 09:55:47,537 INFO L470 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2021-10-24 09:55:47,538 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 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) [2021-10-24 09:55:47,538 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2021-10-24 09:55:47,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-24 09:55:47,538 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 09:55:47,539 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-24 09:55:47,539 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-24 09:55:47,539 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-10-24 09:55:47,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 09:55:47,540 INFO L82 PathProgramCache]: Analyzing trace with hash 64870960, now seen corresponding path program 1 times [2021-10-24 09:55:47,541 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 09:55:47,541 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730227454] [2021-10-24 09:55:47,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 09:55:47,541 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 09:55:47,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 09:55:47,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:55:47,591 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 09:55:47,591 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730227454] [2021-10-24 09:55:47,592 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1730227454] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-24 09:55:47,592 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-24 09:55:47,592 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-24 09:55:47,592 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513634740] [2021-10-24 09:55:47,594 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-24 09:55:47,594 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 09:55:47,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-24 09:55:47,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-24 09:55:47,596 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 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) [2021-10-24 09:55:47,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 09:55:47,617 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2021-10-24 09:55:47,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-24 09:55:47,617 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 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 5 [2021-10-24 09:55:47,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 09:55:47,618 INFO L225 Difference]: With dead ends: 13 [2021-10-24 09:55:47,618 INFO L226 Difference]: Without dead ends: 12 [2021-10-24 09:55:47,619 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 13.9ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-24 09:55:47,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2021-10-24 09:55:47,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2021-10-24 09:55:47,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 11 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) [2021-10-24 09:55:47,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2021-10-24 09:55:47,622 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 5 [2021-10-24 09:55:47,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 09:55:47,623 INFO L470 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2021-10-24 09:55:47,623 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 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) [2021-10-24 09:55:47,623 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2021-10-24 09:55:47,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-24 09:55:47,624 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 09:55:47,624 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-24 09:55:47,624 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-24 09:55:47,625 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-10-24 09:55:47,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 09:55:47,625 INFO L82 PathProgramCache]: Analyzing trace with hash 2010999812, now seen corresponding path program 1 times [2021-10-24 09:55:47,626 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 09:55:47,626 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593765080] [2021-10-24 09:55:47,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 09:55:47,626 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 09:55:47,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 09:55:47,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:55:47,679 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 09:55:47,679 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593765080] [2021-10-24 09:55:47,679 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [593765080] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-24 09:55:47,679 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-24 09:55:47,680 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-24 09:55:47,680 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191298205] [2021-10-24 09:55:47,680 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-24 09:55:47,681 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 09:55:47,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-24 09:55:47,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-24 09:55:47,682 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:55:47,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 09:55:47,703 INFO L93 Difference]: Finished difference Result 12 states and 12 transitions. [2021-10-24 09:55:47,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-24 09:55:47,712 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-10-24 09:55:47,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 09:55:47,713 INFO L225 Difference]: With dead ends: 12 [2021-10-24 09:55:47,713 INFO L226 Difference]: Without dead ends: 11 [2021-10-24 09:55:47,714 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.9ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-24 09:55:47,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2021-10-24 09:55:47,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2021-10-24 09:55:47,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 10 states have internal predecessors, (11), 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) [2021-10-24 09:55:47,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2021-10-24 09:55:47,717 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 6 [2021-10-24 09:55:47,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 09:55:47,718 INFO L470 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2021-10-24 09:55:47,718 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:55:47,718 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2021-10-24 09:55:47,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-24 09:55:47,719 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 09:55:47,719 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-24 09:55:47,719 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-24 09:55:47,720 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-10-24 09:55:47,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 09:55:47,720 INFO L82 PathProgramCache]: Analyzing trace with hash -2083515214, now seen corresponding path program 1 times [2021-10-24 09:55:47,721 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 09:55:47,721 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236154924] [2021-10-24 09:55:47,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 09:55:47,722 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 09:55:47,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 09:55:47,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:55:47,805 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 09:55:47,805 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1236154924] [2021-10-24 09:55:47,806 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1236154924] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-24 09:55:47,807 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-24 09:55:47,807 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-24 09:55:47,808 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915295899] [2021-10-24 09:55:47,808 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-24 09:55:47,809 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 09:55:47,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-24 09:55:47,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-24 09:55:47,812 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:55:47,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 09:55:47,846 INFO L93 Difference]: Finished difference Result 15 states and 15 transitions. [2021-10-24 09:55:47,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-24 09:55:47,847 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-10-24 09:55:47,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 09:55:47,847 INFO L225 Difference]: With dead ends: 15 [2021-10-24 09:55:47,848 INFO L226 Difference]: Without dead ends: 14 [2021-10-24 09:55:47,848 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 21.3ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-24 09:55:47,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2021-10-24 09:55:47,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2021-10-24 09:55:47,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 13 states have internal predecessors, (14), 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) [2021-10-24 09:55:47,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2021-10-24 09:55:47,852 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 7 [2021-10-24 09:55:47,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 09:55:47,853 INFO L470 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2021-10-24 09:55:47,853 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:55:47,853 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2021-10-24 09:55:47,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-24 09:55:47,854 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 09:55:47,854 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 09:55:47,854 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-24 09:55:47,855 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-10-24 09:55:47,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 09:55:47,856 INFO L82 PathProgramCache]: Analyzing trace with hash -803359244, now seen corresponding path program 1 times [2021-10-24 09:55:47,856 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 09:55:47,856 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967178758] [2021-10-24 09:55:47,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 09:55:47,857 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 09:55:47,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 09:55:47,915 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:55:47,915 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 09:55:47,916 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [967178758] [2021-10-24 09:55:47,916 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [967178758] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-24 09:55:47,916 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [839078683] [2021-10-24 09:55:47,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 09:55:47,917 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-24 09:55:47,917 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b1d5974-8e8a-4699-8914-c3051bc8d5a7/bin/utaipan-9zjyvhn0QE/z3 [2021-10-24 09:55:47,919 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b1d5974-8e8a-4699-8914-c3051bc8d5a7/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-24 09:55:47,939 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b1d5974-8e8a-4699-8914-c3051bc8d5a7/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-24 09:55:47,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 09:55:47,970 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-24 09:55:47,974 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 09:55:48,041 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:55:48,041 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 09:55:48,108 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:55:48,108 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [839078683] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-24 09:55:48,109 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [456550229] [2021-10-24 09:55:48,131 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2021-10-24 09:55:48,131 INFO L166 IcfgInterpreter]: Building call graph [2021-10-24 09:55:48,136 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-24 09:55:48,142 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-24 09:55:48,143 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-24 09:55:48,177 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:55:48,182 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-24 09:55:48,183 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:55:48,183 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-10-24 09:55:48,187 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-24 09:55:48,188 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:55:48,189 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-10-24 09:55:48,193 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 113 [2021-10-24 09:55:48,216 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_8|], 10=[|v_#valid_9|]} [2021-10-24 09:55:48,228 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 09:55:48,236 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 [2021-10-24 09:55:48,237 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:55:48,238 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-10-24 09:55:48,239 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:55:48,240 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-10-24 09:55:48,240 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-24 09:55:48,242 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:55:48,262 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:55:48,266 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 09:55:48,268 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 09:55:48,270 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 09:55:48,276 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 09:55:48,279 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 [2021-10-24 09:55:48,280 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:55:48,283 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-24 09:55:48,284 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:55:48,285 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-24 09:55:48,286 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-10-24 09:55:48,286 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:55:48,300 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:55:48,302 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:55:48,305 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 95 [2021-10-24 09:55:48,306 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-10-24 09:55:48,306 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:110, output treesize:95 [2021-10-24 09:55:48,323 INFO L180 QuantifierPusher]: treesize reduction 13, result has 89.8 percent of original size [2021-10-24 09:55:48,328 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 94 [2021-10-24 09:55:48,334 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:55:48,340 INFO L185 QuantifierPusher]: treesize reduction 5, result has 94.9 percent of original size 93 [2021-10-24 09:55:48,345 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:55:48,378 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:55:48,423 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:55:48,519 INFO L180 QuantifierPusher]: treesize reduction 23, result has 91.8 percent of original size [2021-10-24 09:55:48,574 INFO L185 QuantifierPusher]: treesize reduction 9, result has 96.3 percent of original size 231 [2021-10-24 09:55:48,598 INFO L180 QuantifierPusher]: treesize reduction 9, result has 96.5 percent of original size [2021-10-24 09:55:48,616 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 235 [2021-10-24 09:55:48,629 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:55:48,698 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:55:48,700 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:55:48,702 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:55:48,704 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:55:48,706 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:55:48,732 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:55:48,740 INFO L180 QuantifierPusher]: treesize reduction 29, result has 62.8 percent of original size [2021-10-24 09:55:48,744 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-10-24 09:55:48,749 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:55:48,753 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-10-24 09:55:48,758 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:55:48,768 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:55:48,779 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:55:48,811 INFO L180 QuantifierPusher]: treesize reduction 5, result has 95.7 percent of original size [2021-10-24 09:55:48,823 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-24 09:55:48,825 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:55:48,829 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 52 [2021-10-24 09:55:48,834 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 101 [2021-10-24 09:55:48,840 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:55:48,852 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 105 [2021-10-24 09:55:48,856 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:55:48,883 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:55:48,885 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:55:48,887 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:55:48,890 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:55:48,891 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:55:48,898 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:55:48,908 INFO L180 QuantifierPusher]: treesize reduction 29, result has 61.3 percent of original size [2021-10-24 09:55:48,911 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-10-24 09:55:48,913 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:55:48,919 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-10-24 09:55:48,928 INFO L180 QuantifierPusher]: treesize reduction 29, result has 61.3 percent of original size [2021-10-24 09:55:48,931 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-10-24 09:55:48,935 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:55:48,937 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-10-24 09:55:48,939 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:55:48,948 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:55:48,957 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:55:48,964 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:55:48,982 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:55:48,990 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:55:49,003 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:55:49,011 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:55:49,034 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:55:49,047 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:55:49,057 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:55:49,064 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:55:49,085 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-24 09:55:50,027 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [456550229] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-24 09:55:50,028 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2021-10-24 09:55:50,028 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5, 5] total 14 [2021-10-24 09:55:50,029 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315391337] [2021-10-24 09:55:50,029 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-24 09:55:50,029 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 09:55:50,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-24 09:55:50,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2021-10-24 09:55:50,031 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 states have internal predecessors, (8), 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) [2021-10-24 09:55:50,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 09:55:50,861 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2021-10-24 09:55:50,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-24 09:55:50,862 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 states have internal predecessors, (8), 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 9 [2021-10-24 09:55:50,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 09:55:50,862 INFO L225 Difference]: With dead ends: 14 [2021-10-24 09:55:50,862 INFO L226 Difference]: Without dead ends: 13 [2021-10-24 09:55:50,864 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 15 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 1766.8ms TimeCoverageRelationStatistics Valid=67, Invalid=275, Unknown=0, NotChecked=0, Total=342 [2021-10-24 09:55:50,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2021-10-24 09:55:50,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2021-10-24 09:55:50,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 12 states have (on average 1.0833333333333333) internal successors, (13), 12 states have internal predecessors, (13), 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) [2021-10-24 09:55:50,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2021-10-24 09:55:50,867 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 9 [2021-10-24 09:55:50,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 09:55:50,867 INFO L470 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2021-10-24 09:55:50,867 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 states have internal predecessors, (8), 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) [2021-10-24 09:55:50,867 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2021-10-24 09:55:50,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-24 09:55:50,868 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 09:55:50,868 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1] [2021-10-24 09:55:50,902 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b1d5974-8e8a-4699-8914-c3051bc8d5a7/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-24 09:55:51,068 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b1d5974-8e8a-4699-8914-c3051bc8d5a7/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-24 09:55:51,069 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-10-24 09:55:51,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 09:55:51,069 INFO L82 PathProgramCache]: Analyzing trace with hash -1317414976, now seen corresponding path program 1 times [2021-10-24 09:55:51,070 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 09:55:51,070 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [383749665] [2021-10-24 09:55:51,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 09:55:51,070 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 09:55:51,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 09:55:51,138 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:55:51,138 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 09:55:51,138 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [383749665] [2021-10-24 09:55:51,138 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [383749665] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-24 09:55:51,139 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1165400965] [2021-10-24 09:55:51,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 09:55:51,139 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-24 09:55:51,139 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b1d5974-8e8a-4699-8914-c3051bc8d5a7/bin/utaipan-9zjyvhn0QE/z3 [2021-10-24 09:55:51,140 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b1d5974-8e8a-4699-8914-c3051bc8d5a7/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-24 09:55:51,159 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b1d5974-8e8a-4699-8914-c3051bc8d5a7/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-24 09:55:51,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 09:55:51,185 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-24 09:55:51,186 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 09:55:51,314 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:55:51,314 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 09:55:51,470 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:55:51,470 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1165400965] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-24 09:55:51,471 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [829714017] [2021-10-24 09:55:51,474 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2021-10-24 09:55:51,474 INFO L166 IcfgInterpreter]: Building call graph [2021-10-24 09:55:51,474 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-24 09:55:51,474 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-24 09:55:51,479 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-24 09:55:51,487 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:55:51,489 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-24 09:55:51,490 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:55:51,491 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-10-24 09:55:51,491 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-24 09:55:51,491 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:55:51,492 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-10-24 09:55:51,493 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 113 [2021-10-24 09:55:51,501 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_9|], 10=[|v_#valid_10|]} [2021-10-24 09:55:51,506 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 09:55:51,511 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 [2021-10-24 09:55:51,512 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:55:51,513 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-10-24 09:55:51,514 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:55:51,514 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-10-24 09:55:51,515 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-24 09:55:51,515 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:55:51,521 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:55:51,524 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 09:55:51,525 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 09:55:51,526 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 09:55:51,532 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 09:55:51,535 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 [2021-10-24 09:55:51,536 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:55:51,538 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-24 09:55:51,538 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:55:51,539 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-24 09:55:51,539 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-10-24 09:55:51,540 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:55:51,543 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:55:51,549 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:55:51,552 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 95 [2021-10-24 09:55:51,552 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-10-24 09:55:51,553 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:110, output treesize:95 [2021-10-24 09:55:51,566 INFO L180 QuantifierPusher]: treesize reduction 13, result has 89.8 percent of original size [2021-10-24 09:55:51,572 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 94 [2021-10-24 09:55:51,577 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:55:51,583 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 93 [2021-10-24 09:55:51,586 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:55:51,612 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:55:51,624 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:55:51,665 INFO L180 QuantifierPusher]: treesize reduction 18, result has 93.4 percent of original size [2021-10-24 09:55:51,706 INFO L185 QuantifierPusher]: treesize reduction 11, result has 95.5 percent of original size 233 [2021-10-24 09:55:51,726 INFO L180 QuantifierPusher]: treesize reduction 11, result has 95.7 percent of original size [2021-10-24 09:55:51,740 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 234 [2021-10-24 09:55:51,746 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:55:51,782 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:55:51,783 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:55:51,784 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:55:51,786 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:55:51,787 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:55:51,791 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:55:51,797 INFO L180 QuantifierPusher]: treesize reduction 29, result has 62.8 percent of original size [2021-10-24 09:55:51,800 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-10-24 09:55:51,801 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:55:51,804 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-10-24 09:55:51,806 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:55:51,815 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:55:51,823 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:55:51,838 INFO L180 QuantifierPusher]: treesize reduction 5, result has 95.7 percent of original size [2021-10-24 09:55:51,845 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-24 09:55:51,847 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:55:51,853 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 52 [2021-10-24 09:55:51,855 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 101 [2021-10-24 09:55:51,858 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:55:51,863 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 105 [2021-10-24 09:55:51,866 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:55:51,884 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:55:51,886 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:55:51,887 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:55:51,888 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:55:51,889 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:55:51,893 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:55:51,898 INFO L180 QuantifierPusher]: treesize reduction 29, result has 61.3 percent of original size [2021-10-24 09:55:51,901 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-10-24 09:55:51,902 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:55:51,905 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-10-24 09:55:51,909 INFO L180 QuantifierPusher]: treesize reduction 29, result has 61.3 percent of original size [2021-10-24 09:55:51,912 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-10-24 09:55:51,916 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:55:51,917 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-10-24 09:55:51,919 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:55:51,925 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:55:51,934 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:55:51,939 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:55:51,962 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:55:51,972 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:55:51,980 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:55:51,985 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:55:52,008 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-24 09:55:52,940 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-24 09:55:52,940 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-10-24 09:55:52,940 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7, 7] total 15 [2021-10-24 09:55:52,940 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496507629] [2021-10-24 09:55:52,941 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-24 09:55:52,941 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 09:55:52,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-24 09:55:52,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=397, Unknown=0, NotChecked=0, Total=462 [2021-10-24 09:55:52,942 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand has 16 states, 15 states have (on average 2.066666666666667) internal successors, (31), 16 states have internal predecessors, (31), 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) [2021-10-24 09:55:53,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 09:55:53,250 INFO L93 Difference]: Finished difference Result 34 states and 37 transitions. [2021-10-24 09:55:53,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-24 09:55:53,251 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.066666666666667) internal successors, (31), 16 states have internal predecessors, (31), 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 [2021-10-24 09:55:53,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 09:55:53,252 INFO L225 Difference]: With dead ends: 34 [2021-10-24 09:55:53,252 INFO L226 Difference]: Without dead ends: 33 [2021-10-24 09:55:53,253 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 16 SyntacticMatches, 3 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 1244.9ms TimeCoverageRelationStatistics Valid=180, Invalid=812, Unknown=0, NotChecked=0, Total=992 [2021-10-24 09:55:53,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2021-10-24 09:55:53,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2021-10-24 09:55:53,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 32 states have (on average 1.03125) internal successors, (33), 32 states have internal predecessors, (33), 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) [2021-10-24 09:55:53,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 33 transitions. [2021-10-24 09:55:53,259 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 33 transitions. Word has length 12 [2021-10-24 09:55:53,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 09:55:53,260 INFO L470 AbstractCegarLoop]: Abstraction has 33 states and 33 transitions. [2021-10-24 09:55:53,260 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.066666666666667) internal successors, (31), 16 states have internal predecessors, (31), 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) [2021-10-24 09:55:53,260 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 33 transitions. [2021-10-24 09:55:53,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-10-24 09:55:53,261 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 09:55:53,261 INFO L512 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 1, 1, 1] [2021-10-24 09:55:53,298 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b1d5974-8e8a-4699-8914-c3051bc8d5a7/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-24 09:55:53,475 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b1d5974-8e8a-4699-8914-c3051bc8d5a7/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2021-10-24 09:55:53,476 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-10-24 09:55:53,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 09:55:53,476 INFO L82 PathProgramCache]: Analyzing trace with hash -719108544, now seen corresponding path program 2 times [2021-10-24 09:55:53,476 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 09:55:53,477 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932899977] [2021-10-24 09:55:53,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 09:55:53,477 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 09:55:53,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 09:55:53,616 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-10-24 09:55:53,616 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 09:55:53,616 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932899977] [2021-10-24 09:55:53,617 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [932899977] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-24 09:55:53,617 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [588202102] [2021-10-24 09:55:53,617 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-24 09:55:53,617 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-24 09:55:53,618 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b1d5974-8e8a-4699-8914-c3051bc8d5a7/bin/utaipan-9zjyvhn0QE/z3 [2021-10-24 09:55:53,618 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b1d5974-8e8a-4699-8914-c3051bc8d5a7/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-24 09:55:53,620 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b1d5974-8e8a-4699-8914-c3051bc8d5a7/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-10-24 09:55:53,688 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2021-10-24 09:55:53,688 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-24 09:55:53,689 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-24 09:55:53,691 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 09:55:53,986 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:55:53,986 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 09:55:54,384 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:55:54,385 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [588202102] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-24 09:55:54,385 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1085704075] [2021-10-24 09:55:54,387 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2021-10-24 09:55:54,387 INFO L166 IcfgInterpreter]: Building call graph [2021-10-24 09:55:54,388 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-24 09:55:54,388 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-24 09:55:54,388 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-24 09:55:54,395 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:55:54,396 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-24 09:55:54,397 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:55:54,398 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-10-24 09:55:54,399 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-24 09:55:54,399 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:55:54,400 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-10-24 09:55:54,401 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 113 [2021-10-24 09:55:54,417 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_10|], 10=[|v_#valid_11|]} [2021-10-24 09:55:54,423 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 09:55:54,423 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 [2021-10-24 09:55:54,424 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:55:54,424 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-10-24 09:55:54,425 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:55:54,425 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-10-24 09:55:54,425 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-24 09:55:54,426 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:55:54,428 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:55:54,443 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 09:55:54,444 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 09:55:54,445 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 09:55:54,449 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 09:55:54,451 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 [2021-10-24 09:55:54,452 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:55:54,453 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-24 09:55:54,454 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:55:54,454 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-24 09:55:54,455 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-10-24 09:55:54,455 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:55:54,458 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:55:54,459 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:55:54,460 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 95 [2021-10-24 09:55:54,461 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-10-24 09:55:54,461 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:110, output treesize:95 [2021-10-24 09:55:54,469 INFO L180 QuantifierPusher]: treesize reduction 13, result has 89.8 percent of original size [2021-10-24 09:55:54,475 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 94 [2021-10-24 09:55:54,479 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:55:54,481 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 93 [2021-10-24 09:55:54,484 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:55:54,494 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:55:54,505 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:55:54,529 INFO L180 QuantifierPusher]: treesize reduction 18, result has 93.4 percent of original size [2021-10-24 09:55:54,552 INFO L185 QuantifierPusher]: treesize reduction 10, result has 96.0 percent of original size 238 [2021-10-24 09:55:54,560 INFO L180 QuantifierPusher]: treesize reduction 10, result has 96.2 percent of original size [2021-10-24 09:55:54,565 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 239 [2021-10-24 09:55:54,570 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:55:54,597 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:55:54,598 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:55:54,599 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:55:54,600 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:55:54,601 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:55:54,606 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:55:54,610 INFO L180 QuantifierPusher]: treesize reduction 29, result has 62.8 percent of original size [2021-10-24 09:55:54,613 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-10-24 09:55:54,615 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:55:54,616 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-10-24 09:55:54,618 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:55:54,624 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:55:54,631 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:55:54,642 INFO L180 QuantifierPusher]: treesize reduction 5, result has 95.7 percent of original size [2021-10-24 09:55:54,648 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-24 09:55:54,650 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:55:54,652 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 52 [2021-10-24 09:55:54,654 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 101 [2021-10-24 09:55:54,656 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:55:54,660 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 105 [2021-10-24 09:55:54,663 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:55:54,676 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:55:54,677 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:55:54,678 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:55:54,679 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:55:54,680 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:55:54,683 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:55:54,689 INFO L180 QuantifierPusher]: treesize reduction 29, result has 61.3 percent of original size [2021-10-24 09:55:54,691 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-10-24 09:55:54,692 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:55:54,695 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-10-24 09:55:54,699 INFO L180 QuantifierPusher]: treesize reduction 29, result has 61.3 percent of original size [2021-10-24 09:55:54,701 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-10-24 09:55:54,703 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:55:54,705 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-10-24 09:55:54,706 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:55:54,711 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:55:54,718 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:55:54,722 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:55:54,751 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:55:54,757 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:55:54,764 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:55:54,769 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:55:54,784 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-24 09:55:55,915 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-24 09:55:55,916 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-10-24 09:55:55,916 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 15, 15] total 32 [2021-10-24 09:55:55,916 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687587857] [2021-10-24 09:55:55,917 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2021-10-24 09:55:55,917 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 09:55:55,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-10-24 09:55:55,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=203, Invalid=1279, Unknown=0, NotChecked=0, Total=1482 [2021-10-24 09:55:55,919 INFO L87 Difference]: Start difference. First operand 33 states and 33 transitions. Second operand has 33 states, 32 states have (on average 2.21875) internal successors, (71), 33 states have internal predecessors, (71), 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) [2021-10-24 09:55:56,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 09:55:56,128 INFO L93 Difference]: Finished difference Result 33 states and 33 transitions. [2021-10-24 09:55:56,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-24 09:55:56,130 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 32 states have (on average 2.21875) internal successors, (71), 33 states have internal predecessors, (71), 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 32 [2021-10-24 09:55:56,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 09:55:56,130 INFO L225 Difference]: With dead ends: 33 [2021-10-24 09:55:56,130 INFO L226 Difference]: Without dead ends: 0 [2021-10-24 09:55:56,132 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 69 SyntacticMatches, 7 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 767 ImplicationChecksByTransitivity, 1678.6ms TimeCoverageRelationStatistics Valid=378, Invalid=1784, Unknown=0, NotChecked=0, Total=2162 [2021-10-24 09:55:56,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-24 09:55:56,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-24 09:55:56,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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) [2021-10-24 09:55:56,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-24 09:55:56,133 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 32 [2021-10-24 09:55:56,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 09:55:56,133 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-24 09:55:56,133 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 32 states have (on average 2.21875) internal successors, (71), 33 states have internal predecessors, (71), 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) [2021-10-24 09:55:56,133 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-24 09:55:56,133 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-24 09:55:56,139 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-24 09:55:56,140 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-24 09:55:56,140 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-24 09:55:56,140 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-24 09:55:56,179 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b1d5974-8e8a-4699-8914-c3051bc8d5a7/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-10-24 09:55:56,355 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b1d5974-8e8a-4699-8914-c3051bc8d5a7/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-24 09:55:56,357 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-24 09:55:56,360 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:55:56,397 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:55:56,645 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 25) no Hoare annotation was computed. [2021-10-24 09:55:56,645 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-24 09:55:56,645 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 25) no Hoare annotation was computed. [2021-10-24 09:55:56,645 INFO L857 garLoopResultBuilder]: For program point L25(line 25) no Hoare annotation was computed. [2021-10-24 09:55:56,646 INFO L857 garLoopResultBuilder]: For program point L25-1(line 25) no Hoare annotation was computed. [2021-10-24 09:55:56,646 INFO L857 garLoopResultBuilder]: For program point L23(line 23) no Hoare annotation was computed. [2021-10-24 09:55:56,646 INFO L857 garLoopResultBuilder]: For program point L25-2(line 25) no Hoare annotation was computed. [2021-10-24 09:55:56,646 INFO L857 garLoopResultBuilder]: For program point L25-3(line 25) no Hoare annotation was computed. [2021-10-24 09:55:56,646 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 25) no Hoare annotation was computed. [2021-10-24 09:55:56,646 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 25) no Hoare annotation was computed. [2021-10-24 09:55:56,646 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-24 09:55:56,646 INFO L860 garLoopResultBuilder]: At program point L28(lines 19 29) the Hoare annotation is: true [2021-10-24 09:55:56,647 INFO L853 garLoopResultBuilder]: At program point L24-2(lines 24 26) the Hoare annotation is: (let ((.cse0 (select |#memory_int| |#t~string0.base|))) (and (<= 0 ULTIMATE.start_main_~k~0) (= (select |#valid| |#t~string1.base|) 1) (< |#StackHeapBarrier| |#t~string1.base|) (= (select .cse0 (+ |#t~string0.offset| 1)) 0) (= 2 (select |#length| |#t~string0.base|)) (= (select |#length| |#t~string1.base|) 26) (<= ULTIMATE.start_main_~j~0 2147483647) (<= ULTIMATE.start_main_~n~0 (+ ULTIMATE.start_main_~k~0 ULTIMATE.start_main_~j~0)) (let ((.cse1 (<= ULTIMATE.start_main_~n~0 2147483647)) (.cse2 (= |#NULL.offset| 0))) (or (and (<= ULTIMATE.start_main_~k~0 2147483646) (<= 1 ULTIMATE.start_main_~j~0) .cse1 .cse2) (and (< 0 ULTIMATE.start_main_~n~0) (= ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~k~0) .cse1 .cse2 (= ULTIMATE.start_main_~j~0 0)))) (= (select |#valid| 0) 0) (= (select |#valid| |#t~string0.base|) 1) (< |#StackHeapBarrier| |#t~string0.base|) (= 48 (select .cse0 |#t~string0.offset|)) (= |#t~string1.offset| 0) (<= 0 ULTIMATE.start_main_~n~0) (= |#t~string0.offset| 0) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0))) [2021-10-24 09:55:56,652 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-24 09:55:56,688 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 09:55:56 BoogieIcfgContainer [2021-10-24 09:55:56,688 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-24 09:55:56,689 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-24 09:55:56,689 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-24 09:55:56,690 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-24 09:55:56,690 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:55:47" (3/4) ... [2021-10-24 09:55:56,693 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-24 09:55:56,704 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2021-10-24 09:55:56,705 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2021-10-24 09:55:56,705 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-24 09:55:56,705 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-24 09:55:56,747 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b1d5974-8e8a-4699-8914-c3051bc8d5a7/bin/utaipan-9zjyvhn0QE/witness.graphml [2021-10-24 09:55:56,747 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-24 09:55:56,748 INFO L168 Benchmark]: Toolchain (without parser) took 10488.21 ms. Allocated memory was 88.1 MB in the beginning and 136.3 MB in the end (delta: 48.2 MB). Free memory was 51.2 MB in the beginning and 64.5 MB in the end (delta: -13.3 MB). Peak memory consumption was 34.9 MB. Max. memory is 16.1 GB. [2021-10-24 09:55:56,749 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 88.1 MB. Free memory is still 67.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 09:55:56,749 INFO L168 Benchmark]: CACSL2BoogieTranslator took 265.42 ms. Allocated memory was 88.1 MB in the beginning and 113.2 MB in the end (delta: 25.2 MB). Free memory was 50.9 MB in the beginning and 88.6 MB in the end (delta: -37.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-24 09:55:56,749 INFO L168 Benchmark]: Boogie Procedure Inliner took 43.82 ms. Allocated memory is still 113.2 MB. Free memory was 88.6 MB in the beginning and 87.1 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-24 09:55:56,750 INFO L168 Benchmark]: Boogie Preprocessor took 22.66 ms. Allocated memory is still 113.2 MB. Free memory was 87.1 MB in the beginning and 86.1 MB in the end (delta: 1.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-24 09:55:56,752 INFO L168 Benchmark]: RCFGBuilder took 462.18 ms. Allocated memory is still 113.2 MB. Free memory was 86.1 MB in the beginning and 74.7 MB in the end (delta: 11.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-24 09:55:56,757 INFO L168 Benchmark]: TraceAbstraction took 9618.79 ms. Allocated memory was 113.2 MB in the beginning and 136.3 MB in the end (delta: 23.1 MB). Free memory was 74.0 MB in the beginning and 66.6 MB in the end (delta: 7.4 MB). Peak memory consumption was 33.5 MB. Max. memory is 16.1 GB. [2021-10-24 09:55:56,757 INFO L168 Benchmark]: Witness Printer took 58.27 ms. Allocated memory is still 136.3 MB. Free memory was 66.6 MB in the beginning and 64.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-24 09:55:56,760 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 88.1 MB. Free memory is still 67.1 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 265.42 ms. Allocated memory was 88.1 MB in the beginning and 113.2 MB in the end (delta: 25.2 MB). Free memory was 50.9 MB in the beginning and 88.6 MB in the end (delta: -37.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 43.82 ms. Allocated memory is still 113.2 MB. Free memory was 88.6 MB in the beginning and 87.1 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 22.66 ms. Allocated memory is still 113.2 MB. Free memory was 87.1 MB in the beginning and 86.1 MB in the end (delta: 1.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 462.18 ms. Allocated memory is still 113.2 MB. Free memory was 86.1 MB in the beginning and 74.7 MB in the end (delta: 11.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 9618.79 ms. Allocated memory was 113.2 MB in the beginning and 136.3 MB in the end (delta: 23.1 MB). Free memory was 74.0 MB in the beginning and 66.6 MB in the end (delta: 7.4 MB). Peak memory consumption was 33.5 MB. Max. memory is 16.1 GB. * Witness Printer took 58.27 ms. Allocated memory is still 136.3 MB. Free memory was 66.6 MB in the beginning and 64.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 25]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 25]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 25]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 25]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 13 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 9474.5ms, OverallIterations: 7, TraceHistogramMax: 6, EmptinessCheckTime: 11.9ms, AutomataDifference: 1543.3ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 289.0ms, InitialAbstractionConstructionTime: 11.5ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 33 SDtfs, 85 SDslu, 52 SDs, 0 SdLazy, 186 SolverSat, 64 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 218.5ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 219 GetRequests, 103 SyntacticMatches, 12 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 997 ImplicationChecksByTransitivity, 4756.7ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=33occurred in iteration=6, InterpolantAutomatonStates: 49, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 36.6ms AutomataMinimizationTime, 7 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 7 NumberOfFragments, 105 HoareAnnotationTreeSize, 2 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 37.8ms HoareSimplificationTime, 2 FomulaSimplificationsInter, 512 FormulaSimplificationTreeSizeReductionInter, 244.3ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 30.2ms SsaConstructionTime, 188.2ms SatisfiabilityAnalysisTime, 1505.0ms InterpolantComputationTime, 128 NumberOfCodeBlocks, 128 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 168 ConstructedInterpolants, 0 QuantifiedInterpolants, 774 SizeOfPredicates, 22 NumberOfNonLiveVariables, 235 ConjunctsInSsa, 31 ConjunctsInUnsatCore, 13 InterpolantComputations, 4 PerfectInterpolantSequences, 55/246 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: OVERALL_TIME[ms]: 955, ICFG_INTERPRETER_ENTERED_PROCEDURES: 1, DAG_INTERPRETER_EARLY_EXIT_QUERIES_NONTRIVIAL: 9, DAG_INTERPRETER_EARLY_EXITS: 0, TOOLS_POST_APPLICATIONS: 34, TOOLS_POST_TIME[ms]: 400, TOOLS_POST_CALL_APPLICATIONS: 0, TOOLS_POST_CALL_TIME[ms]: 0, TOOLS_POST_RETURN_APPLICATIONS: 0, TOOLS_POST_RETURN_TIME[ms]: 0, TOOLS_QUANTIFIERELIM_APPLICATIONS: 34, TOOLS_QUANTIFIERELIM_TIME[ms]: 383, TOOLS_QUANTIFIERELIM_MAX_TIME[ms]: 134, FLUID_QUERY_TIME[ms]: 6, FLUID_QUERIES: 54, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 3, DOMAIN_JOIN_TIME[ms]: 144, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME[ms]: 0, DOMAIN_WIDEN_APPLICATIONS: 4, DOMAIN_WIDEN_TIME[ms]: 338, DOMAIN_ISSUBSETEQ_APPLICATIONS: 5, DOMAIN_ISSUBSETEQ_TIME[ms]: 12, DOMAIN_ISBOTTOM_APPLICATIONS: 9, DOMAIN_ISBOTTOM_TIME[ms]: 11, LOOP_SUMMARIZER_APPLICATIONS: 1, LOOP_SUMMARIZER_CACHE_MISSES: 1, LOOP_SUMMARIZER_OVERALL_TIME[ms]: 609, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME[ms]: 609, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 5, CALL_SUMMARIZER_APPLICATIONS: 0, CALL_SUMMARIZER_CACHE_MISSES: 0, CALL_SUMMARIZER_OVERALL_TIME[ms]: 0, CALL_SUMMARIZER_NEW_COMPUTATION_TIME[ms]: 0, PROCEDURE_GRAPH_BUILDER_TIME[ms]: 2, PATH_EXPR_TIME[ms]: 3, REGEX_TO_DAG_TIME[ms]: 3, DAG_COMPRESSION_TIME[ms]: 9, DAG_COMPRESSION_PROCESSED_NODES: 78, DAG_COMPRESSION_RETAINED_NODES: 28, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold - InvariantResult [Line: 24]: Loop Invariant Derived loop invariant: ((((((((((((((((0 <= k && \valid["benchmark34_conjunctive.c"] == 1) && unknown-#StackHeapBarrier-unknown < "benchmark34_conjunctive.c") && unknown-#memory_int-unknown["0"]["0" + 1] == 0) && 2 == unknown-#length-unknown["0"]) && unknown-#length-unknown["benchmark34_conjunctive.c"] == 26) && j <= 2147483647) && n <= k + j) && ((((k <= 2147483646 && 1 <= j) && n <= 2147483647) && #NULL == 0) || ((((0 < n && n == k) && n <= 2147483647) && #NULL == 0) && j == 0))) && \valid[0] == 0) && \valid["0"] == 1) && unknown-#StackHeapBarrier-unknown < "0") && 48 == unknown-#memory_int-unknown["0"]["0"]) && "benchmark34_conjunctive.c" == 0) && 0 <= n) && "0" == 0) && 0 < unknown-#StackHeapBarrier-unknown) && #NULL == 0 - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2021-10-24 09:55:56,826 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b1d5974-8e8a-4699-8914-c3051bc8d5a7/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...