./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_rand_multiply_08_good.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 38b53e6a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_673379cb-290b-4bd4-8c16-66e7f23c2558/bin/utaipan-ByfvJB40ur/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_673379cb-290b-4bd4-8c16-66e7f23c2558/bin/utaipan-ByfvJB40ur/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_673379cb-290b-4bd4-8c16-66e7f23c2558/bin/utaipan-ByfvJB40ur/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_673379cb-290b-4bd4-8c16-66e7f23c2558/bin/utaipan-ByfvJB40ur/config/TaipanReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_rand_multiply_08_good.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_673379cb-290b-4bd4-8c16-66e7f23c2558/bin/utaipan-ByfvJB40ur/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_673379cb-290b-4bd4-8c16-66e7f23c2558/bin/utaipan-ByfvJB40ur --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 64bit --witnessprinter.graph.data.programhash b8348ec2ddf654ee4dfaf991e8e349095d9da221b3a7e5dd3b5553bd735fefe5 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-38b53e6 [2022-11-25 23:20:05,796 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 23:20:05,800 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 23:20:05,830 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 23:20:05,831 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 23:20:05,832 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 23:20:05,834 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 23:20:05,836 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 23:20:05,838 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 23:20:05,840 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 23:20:05,841 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 23:20:05,842 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 23:20:05,849 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 23:20:05,855 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 23:20:05,857 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 23:20:05,858 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 23:20:05,859 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 23:20:05,860 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 23:20:05,862 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 23:20:05,864 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 23:20:05,866 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 23:20:05,868 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 23:20:05,869 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 23:20:05,870 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 23:20:05,875 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 23:20:05,876 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 23:20:05,876 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 23:20:05,877 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 23:20:05,878 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 23:20:05,879 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 23:20:05,880 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 23:20:05,881 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 23:20:05,882 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 23:20:05,883 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 23:20:05,884 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 23:20:05,884 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 23:20:05,885 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 23:20:05,886 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 23:20:05,886 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 23:20:05,887 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 23:20:05,888 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 23:20:05,889 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_673379cb-290b-4bd4-8c16-66e7f23c2558/bin/utaipan-ByfvJB40ur/config/svcomp-Overflow-64bit-Taipan_Default.epf [2022-11-25 23:20:05,915 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 23:20:05,916 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 23:20:05,916 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 23:20:05,916 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 23:20:05,917 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 23:20:05,917 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 23:20:05,918 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-25 23:20:05,918 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-25 23:20:05,918 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-25 23:20:05,919 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-25 23:20:05,919 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-25 23:20:05,919 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-25 23:20:05,920 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-25 23:20:05,920 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-25 23:20:05,920 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-25 23:20:05,921 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-25 23:20:05,921 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-25 23:20:05,921 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-25 23:20:05,922 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 23:20:05,922 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-25 23:20:05,923 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 23:20:05,923 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 23:20:05,923 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 23:20:05,924 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 23:20:05,924 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 23:20:05,924 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-25 23:20:05,924 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 23:20:05,925 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 23:20:05,925 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 23:20:05,925 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 23:20:05,926 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 23:20:05,926 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 23:20:05,926 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 23:20:05,927 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-25 23:20:05,927 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 23:20:05,927 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 23:20:05,928 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-25 23:20:05,928 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 23:20:05,928 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 23:20:05,928 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-25 23:20:05,929 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_673379cb-290b-4bd4-8c16-66e7f23c2558/bin/utaipan-ByfvJB40ur/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_673379cb-290b-4bd4-8c16-66e7f23c2558/bin/utaipan-ByfvJB40ur Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b8348ec2ddf654ee4dfaf991e8e349095d9da221b3a7e5dd3b5553bd735fefe5 [2022-11-25 23:20:06,237 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 23:20:06,264 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 23:20:06,267 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 23:20:06,268 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 23:20:06,269 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 23:20:06,271 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_673379cb-290b-4bd4-8c16-66e7f23c2558/bin/utaipan-ByfvJB40ur/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_rand_multiply_08_good.i [2022-11-25 23:20:09,573 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 23:20:10,044 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 23:20:10,045 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_673379cb-290b-4bd4-8c16-66e7f23c2558/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_rand_multiply_08_good.i [2022-11-25 23:20:10,071 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_673379cb-290b-4bd4-8c16-66e7f23c2558/bin/utaipan-ByfvJB40ur/data/7bf91ccf0/6096085c0b604d8ca7f11d37db229e31/FLAGa699944b7 [2022-11-25 23:20:10,099 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_673379cb-290b-4bd4-8c16-66e7f23c2558/bin/utaipan-ByfvJB40ur/data/7bf91ccf0/6096085c0b604d8ca7f11d37db229e31 [2022-11-25 23:20:10,102 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 23:20:10,105 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 23:20:10,109 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 23:20:10,109 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 23:20:10,113 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 23:20:10,115 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 11:20:10" (1/1) ... [2022-11-25 23:20:10,117 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@450f7c5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:20:10, skipping insertion in model container [2022-11-25 23:20:10,117 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 11:20:10" (1/1) ... [2022-11-25 23:20:10,128 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 23:20:10,214 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 23:20:10,763 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-25 23:20:11,463 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-25 23:20:11,470 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-11-25 23:20:11,473 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-11-25 23:20:11,476 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-11-25 23:20:11,477 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-11-25 23:20:11,528 WARN L623 FunctionHandler]: Unknown extern function time [2022-11-25 23:20:11,529 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 23:20:11,547 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 23:20:11,571 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-25 23:20:11,622 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-25 23:20:11,624 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-11-25 23:20:11,625 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-11-25 23:20:11,628 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-11-25 23:20:11,629 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-11-25 23:20:11,644 WARN L623 FunctionHandler]: Unknown extern function time [2022-11-25 23:20:11,645 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 23:20:11,778 INFO L208 MainTranslator]: Completed translation [2022-11-25 23:20:11,778 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:20:11 WrapperNode [2022-11-25 23:20:11,779 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 23:20:11,780 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 23:20:11,780 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 23:20:11,780 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 23:20:11,789 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:20:11" (1/1) ... [2022-11-25 23:20:11,816 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:20:11" (1/1) ... [2022-11-25 23:20:11,851 INFO L138 Inliner]: procedures = 505, calls = 77, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 149 [2022-11-25 23:20:11,852 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 23:20:11,853 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 23:20:11,853 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 23:20:11,853 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 23:20:11,864 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:20:11" (1/1) ... [2022-11-25 23:20:11,865 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:20:11" (1/1) ... [2022-11-25 23:20:11,868 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:20:11" (1/1) ... [2022-11-25 23:20:11,869 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:20:11" (1/1) ... [2022-11-25 23:20:11,878 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:20:11" (1/1) ... [2022-11-25 23:20:11,892 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:20:11" (1/1) ... [2022-11-25 23:20:11,896 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:20:11" (1/1) ... [2022-11-25 23:20:11,898 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:20:11" (1/1) ... [2022-11-25 23:20:11,902 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 23:20:11,903 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 23:20:11,903 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 23:20:11,904 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 23:20:11,907 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:20:11" (1/1) ... [2022-11-25 23:20:11,915 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 23:20:11,931 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_673379cb-290b-4bd4-8c16-66e7f23c2558/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:20:11,946 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_673379cb-290b-4bd4-8c16-66e7f23c2558/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 23:20:12,000 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_673379cb-290b-4bd4-8c16-66e7f23c2558/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 23:20:12,028 INFO L130 BoogieDeclarations]: Found specification of procedure printIntLine [2022-11-25 23:20:12,028 INFO L138 BoogieDeclarations]: Found implementation of procedure printIntLine [2022-11-25 23:20:12,028 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2022-11-25 23:20:12,028 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2022-11-25 23:20:12,029 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 23:20:12,029 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 23:20:12,029 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 23:20:12,029 INFO L130 BoogieDeclarations]: Found specification of procedure staticReturnsTrue [2022-11-25 23:20:12,030 INFO L138 BoogieDeclarations]: Found implementation of procedure staticReturnsTrue [2022-11-25 23:20:12,030 INFO L130 BoogieDeclarations]: Found specification of procedure staticReturnsFalse [2022-11-25 23:20:12,030 INFO L138 BoogieDeclarations]: Found implementation of procedure staticReturnsFalse [2022-11-25 23:20:12,031 INFO L130 BoogieDeclarations]: Found specification of procedure time [2022-11-25 23:20:12,032 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 23:20:12,218 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 23:20:12,220 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 23:20:12,788 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 23:20:12,984 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 23:20:12,985 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-25 23:20:12,988 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 11:20:12 BoogieIcfgContainer [2022-11-25 23:20:12,988 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 23:20:12,990 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 23:20:12,990 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 23:20:12,995 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 23:20:12,995 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 11:20:10" (1/3) ... [2022-11-25 23:20:12,996 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b547ba6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 11:20:12, skipping insertion in model container [2022-11-25 23:20:12,996 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:20:11" (2/3) ... [2022-11-25 23:20:12,997 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b547ba6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 11:20:12, skipping insertion in model container [2022-11-25 23:20:12,997 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 11:20:12" (3/3) ... [2022-11-25 23:20:12,998 INFO L112 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_rand_multiply_08_good.i [2022-11-25 23:20:13,020 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 23:20:13,021 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2022-11-25 23:20:13,082 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 23:20:13,089 INFO L357 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@5ee8e2a8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 23:20:13,090 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2022-11-25 23:20:13,095 INFO L276 IsEmpty]: Start isEmpty. Operand has 69 states, 38 states have (on average 1.5) internal successors, (57), 54 states have internal predecessors, (57), 18 states have call successors, (18), 4 states have call predecessors, (18), 4 states have return successors, (18), 15 states have call predecessors, (18), 18 states have call successors, (18) [2022-11-25 23:20:13,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-25 23:20:13,104 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:20:13,105 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:20:13,105 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-25 23:20:13,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:20:13,112 INFO L85 PathProgramCache]: Analyzing trace with hash 937562775, now seen corresponding path program 1 times [2022-11-25 23:20:13,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:20:13,124 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560157128] [2022-11-25 23:20:13,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:20:13,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:20:13,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:20:13,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:20:13,524 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:20:13,524 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1560157128] [2022-11-25 23:20:13,525 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1560157128] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:20:13,525 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:20:13,525 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 23:20:13,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897522418] [2022-11-25 23:20:13,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:20:13,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 23:20:13,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:20:13,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 23:20:13,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 23:20:13,591 INFO L87 Difference]: Start difference. First operand has 69 states, 38 states have (on average 1.5) internal successors, (57), 54 states have internal predecessors, (57), 18 states have call successors, (18), 4 states have call predecessors, (18), 4 states have return successors, (18), 15 states have call predecessors, (18), 18 states have call successors, (18) Second operand has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-25 23:20:13,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:20:13,709 INFO L93 Difference]: Finished difference Result 113 states and 156 transitions. [2022-11-25 23:20:13,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 23:20:13,712 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 17 [2022-11-25 23:20:13,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:20:13,724 INFO L225 Difference]: With dead ends: 113 [2022-11-25 23:20:13,725 INFO L226 Difference]: Without dead ends: 102 [2022-11-25 23:20:13,728 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 23:20:13,732 INFO L413 NwaCegarLoop]: 91 mSDtfsCounter, 42 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 163 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 23:20:13,734 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 163 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 23:20:13,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2022-11-25 23:20:13,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 63. [2022-11-25 23:20:13,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 36 states have (on average 1.4166666666666667) internal successors, (51), 49 states have internal predecessors, (51), 16 states have call successors, (16), 4 states have call predecessors, (16), 4 states have return successors, (16), 13 states have call predecessors, (16), 16 states have call successors, (16) [2022-11-25 23:20:13,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 83 transitions. [2022-11-25 23:20:13,788 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 83 transitions. Word has length 17 [2022-11-25 23:20:13,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:20:13,789 INFO L495 AbstractCegarLoop]: Abstraction has 63 states and 83 transitions. [2022-11-25 23:20:13,790 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-25 23:20:13,790 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 83 transitions. [2022-11-25 23:20:13,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-25 23:20:13,792 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:20:13,792 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:20:13,792 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-25 23:20:13,793 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-25 23:20:13,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:20:13,794 INFO L85 PathProgramCache]: Analyzing trace with hash -1000324968, now seen corresponding path program 1 times [2022-11-25 23:20:13,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:20:13,794 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589260850] [2022-11-25 23:20:13,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:20:13,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:20:13,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:20:13,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:20:13,985 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:20:13,985 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [589260850] [2022-11-25 23:20:13,985 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [589260850] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:20:13,986 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:20:13,986 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 23:20:13,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532433156] [2022-11-25 23:20:13,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:20:13,988 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 23:20:13,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:20:13,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 23:20:13,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 23:20:13,989 INFO L87 Difference]: Start difference. First operand 63 states and 83 transitions. Second operand has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-25 23:20:14,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:20:14,087 INFO L93 Difference]: Finished difference Result 102 states and 137 transitions. [2022-11-25 23:20:14,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 23:20:14,088 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 18 [2022-11-25 23:20:14,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:20:14,090 INFO L225 Difference]: With dead ends: 102 [2022-11-25 23:20:14,091 INFO L226 Difference]: Without dead ends: 101 [2022-11-25 23:20:14,091 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 23:20:14,093 INFO L413 NwaCegarLoop]: 109 mSDtfsCounter, 36 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 181 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 23:20:14,093 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 181 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 23:20:14,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2022-11-25 23:20:14,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 62. [2022-11-25 23:20:14,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 36 states have (on average 1.3888888888888888) internal successors, (50), 48 states have internal predecessors, (50), 16 states have call successors, (16), 4 states have call predecessors, (16), 4 states have return successors, (16), 13 states have call predecessors, (16), 16 states have call successors, (16) [2022-11-25 23:20:14,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 82 transitions. [2022-11-25 23:20:14,124 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 82 transitions. Word has length 18 [2022-11-25 23:20:14,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:20:14,125 INFO L495 AbstractCegarLoop]: Abstraction has 62 states and 82 transitions. [2022-11-25 23:20:14,125 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-25 23:20:14,126 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 82 transitions. [2022-11-25 23:20:14,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-11-25 23:20:14,128 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:20:14,128 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:20:14,128 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-25 23:20:14,129 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-25 23:20:14,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:20:14,135 INFO L85 PathProgramCache]: Analyzing trace with hash -1469313555, now seen corresponding path program 1 times [2022-11-25 23:20:14,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:20:14,135 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836379445] [2022-11-25 23:20:14,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:20:14,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:20:14,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:20:14,268 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-25 23:20:14,269 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:20:14,269 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836379445] [2022-11-25 23:20:14,269 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [836379445] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:20:14,270 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:20:14,270 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 23:20:14,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580322203] [2022-11-25 23:20:14,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:20:14,272 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 23:20:14,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:20:14,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 23:20:14,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 23:20:14,274 INFO L87 Difference]: Start difference. First operand 62 states and 82 transitions. Second operand has 3 states, 2 states have (on average 8.0) internal successors, (16), 3 states have internal predecessors, (16), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-11-25 23:20:14,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:20:14,359 INFO L93 Difference]: Finished difference Result 87 states and 115 transitions. [2022-11-25 23:20:14,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 23:20:14,362 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 8.0) internal successors, (16), 3 states have internal predecessors, (16), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 28 [2022-11-25 23:20:14,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:20:14,363 INFO L225 Difference]: With dead ends: 87 [2022-11-25 23:20:14,364 INFO L226 Difference]: Without dead ends: 86 [2022-11-25 23:20:14,364 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 23:20:14,370 INFO L413 NwaCegarLoop]: 90 mSDtfsCounter, 24 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 23:20:14,371 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 157 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 23:20:14,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2022-11-25 23:20:14,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 61. [2022-11-25 23:20:14,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 36 states have (on average 1.3611111111111112) internal successors, (49), 47 states have internal predecessors, (49), 16 states have call successors, (16), 4 states have call predecessors, (16), 4 states have return successors, (16), 13 states have call predecessors, (16), 16 states have call successors, (16) [2022-11-25 23:20:14,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 81 transitions. [2022-11-25 23:20:14,390 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 81 transitions. Word has length 28 [2022-11-25 23:20:14,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:20:14,391 INFO L495 AbstractCegarLoop]: Abstraction has 61 states and 81 transitions. [2022-11-25 23:20:14,391 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 8.0) internal successors, (16), 3 states have internal predecessors, (16), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-11-25 23:20:14,391 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 81 transitions. [2022-11-25 23:20:14,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-11-25 23:20:14,392 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:20:14,393 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:20:14,393 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-25 23:20:14,393 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-25 23:20:14,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:20:14,394 INFO L85 PathProgramCache]: Analyzing trace with hash 1695920169, now seen corresponding path program 1 times [2022-11-25 23:20:14,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:20:14,394 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [594947791] [2022-11-25 23:20:14,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:20:14,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:20:14,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:20:14,572 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-25 23:20:14,572 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:20:14,573 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [594947791] [2022-11-25 23:20:14,573 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [594947791] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:20:14,573 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:20:14,573 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 23:20:14,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252581438] [2022-11-25 23:20:14,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:20:14,574 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 23:20:14,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:20:14,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 23:20:14,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 23:20:14,575 INFO L87 Difference]: Start difference. First operand 61 states and 81 transitions. Second operand has 3 states, 2 states have (on average 8.5) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-11-25 23:20:14,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:20:14,620 INFO L93 Difference]: Finished difference Result 86 states and 114 transitions. [2022-11-25 23:20:14,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 23:20:14,621 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 8.5) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 29 [2022-11-25 23:20:14,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:20:14,622 INFO L225 Difference]: With dead ends: 86 [2022-11-25 23:20:14,622 INFO L226 Difference]: Without dead ends: 85 [2022-11-25 23:20:14,623 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 23:20:14,624 INFO L413 NwaCegarLoop]: 100 mSDtfsCounter, 23 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 169 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 23:20:14,625 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 169 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 23:20:14,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2022-11-25 23:20:14,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 60. [2022-11-25 23:20:14,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 36 states have (on average 1.3333333333333333) internal successors, (48), 46 states have internal predecessors, (48), 16 states have call successors, (16), 4 states have call predecessors, (16), 4 states have return successors, (16), 13 states have call predecessors, (16), 16 states have call successors, (16) [2022-11-25 23:20:14,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 80 transitions. [2022-11-25 23:20:14,635 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 80 transitions. Word has length 29 [2022-11-25 23:20:14,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:20:14,636 INFO L495 AbstractCegarLoop]: Abstraction has 60 states and 80 transitions. [2022-11-25 23:20:14,636 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 8.5) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-11-25 23:20:14,636 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 80 transitions. [2022-11-25 23:20:14,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-11-25 23:20:14,638 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:20:14,638 INFO L195 NwaCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:20:14,638 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-25 23:20:14,638 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-25 23:20:14,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:20:14,639 INFO L85 PathProgramCache]: Analyzing trace with hash -2073541454, now seen corresponding path program 1 times [2022-11-25 23:20:14,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:20:14,640 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30950132] [2022-11-25 23:20:14,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:20:14,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:20:14,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:20:14,814 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-25 23:20:14,815 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:20:14,815 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30950132] [2022-11-25 23:20:14,818 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [30950132] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 23:20:14,818 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1802662517] [2022-11-25 23:20:14,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:20:14,819 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:20:14,819 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_673379cb-290b-4bd4-8c16-66e7f23c2558/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:20:14,827 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_673379cb-290b-4bd4-8c16-66e7f23c2558/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 23:20:14,855 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_673379cb-290b-4bd4-8c16-66e7f23c2558/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-25 23:20:14,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:20:14,992 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-25 23:20:14,998 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:20:15,062 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-25 23:20:15,062 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 23:20:15,063 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1802662517] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:20:15,063 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 23:20:15,063 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2022-11-25 23:20:15,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082300578] [2022-11-25 23:20:15,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:20:15,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 23:20:15,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:20:15,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 23:20:15,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-25 23:20:15,068 INFO L87 Difference]: Start difference. First operand 60 states and 80 transitions. Second operand has 3 states, 2 states have (on average 10.0) internal successors, (20), 3 states have internal predecessors, (20), 2 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-25 23:20:15,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:20:15,116 INFO L93 Difference]: Finished difference Result 60 states and 80 transitions. [2022-11-25 23:20:15,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 23:20:15,117 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 10.0) internal successors, (20), 3 states have internal predecessors, (20), 2 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 38 [2022-11-25 23:20:15,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:20:15,119 INFO L225 Difference]: With dead ends: 60 [2022-11-25 23:20:15,119 INFO L226 Difference]: Without dead ends: 59 [2022-11-25 23:20:15,124 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-25 23:20:15,127 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 15 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 23:20:15,128 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 112 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 23:20:15,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2022-11-25 23:20:15,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2022-11-25 23:20:15,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 36 states have (on average 1.3055555555555556) internal successors, (47), 45 states have internal predecessors, (47), 16 states have call successors, (16), 4 states have call predecessors, (16), 4 states have return successors, (16), 13 states have call predecessors, (16), 16 states have call successors, (16) [2022-11-25 23:20:15,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 79 transitions. [2022-11-25 23:20:15,137 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 79 transitions. Word has length 38 [2022-11-25 23:20:15,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:20:15,138 INFO L495 AbstractCegarLoop]: Abstraction has 59 states and 79 transitions. [2022-11-25 23:20:15,138 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 10.0) internal successors, (20), 3 states have internal predecessors, (20), 2 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-25 23:20:15,138 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 79 transitions. [2022-11-25 23:20:15,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-11-25 23:20:15,140 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:20:15,140 INFO L195 NwaCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:20:15,153 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_673379cb-290b-4bd4-8c16-66e7f23c2558/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-25 23:20:15,347 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_673379cb-290b-4bd4-8c16-66e7f23c2558/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:20:15,348 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-25 23:20:15,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:20:15,348 INFO L85 PathProgramCache]: Analyzing trace with hash 144724517, now seen corresponding path program 1 times [2022-11-25 23:20:15,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:20:15,349 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716357988] [2022-11-25 23:20:15,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:20:15,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:20:15,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:20:15,492 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-25 23:20:15,492 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:20:15,492 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1716357988] [2022-11-25 23:20:15,492 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1716357988] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 23:20:15,493 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [23285185] [2022-11-25 23:20:15,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:20:15,493 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:20:15,493 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_673379cb-290b-4bd4-8c16-66e7f23c2558/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:20:15,494 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_673379cb-290b-4bd4-8c16-66e7f23c2558/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 23:20:15,520 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_673379cb-290b-4bd4-8c16-66e7f23c2558/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-25 23:20:15,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:20:15,643 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-25 23:20:15,645 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:20:15,670 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-25 23:20:15,670 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 23:20:15,670 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [23285185] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:20:15,671 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 23:20:15,671 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2022-11-25 23:20:15,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575007200] [2022-11-25 23:20:15,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:20:15,672 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 23:20:15,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:20:15,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 23:20:15,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-25 23:20:15,673 INFO L87 Difference]: Start difference. First operand 59 states and 79 transitions. Second operand has 3 states, 2 states have (on average 10.5) internal successors, (21), 3 states have internal predecessors, (21), 2 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-25 23:20:15,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:20:15,720 INFO L93 Difference]: Finished difference Result 91 states and 116 transitions. [2022-11-25 23:20:15,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 23:20:15,721 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 10.5) internal successors, (21), 3 states have internal predecessors, (21), 2 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 39 [2022-11-25 23:20:15,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:20:15,744 INFO L225 Difference]: With dead ends: 91 [2022-11-25 23:20:15,744 INFO L226 Difference]: Without dead ends: 77 [2022-11-25 23:20:15,745 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-25 23:20:15,746 INFO L413 NwaCegarLoop]: 72 mSDtfsCounter, 10 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 136 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 23:20:15,746 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 136 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 23:20:15,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2022-11-25 23:20:15,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 65. [2022-11-25 23:20:15,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 41 states have (on average 1.2926829268292683) internal successors, (53), 49 states have internal predecessors, (53), 17 states have call successors, (17), 4 states have call predecessors, (17), 4 states have return successors, (17), 14 states have call predecessors, (17), 17 states have call successors, (17) [2022-11-25 23:20:15,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 87 transitions. [2022-11-25 23:20:15,755 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 87 transitions. Word has length 39 [2022-11-25 23:20:15,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:20:15,756 INFO L495 AbstractCegarLoop]: Abstraction has 65 states and 87 transitions. [2022-11-25 23:20:15,756 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 10.5) internal successors, (21), 3 states have internal predecessors, (21), 2 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-25 23:20:15,756 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 87 transitions. [2022-11-25 23:20:15,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-11-25 23:20:15,758 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:20:15,758 INFO L195 NwaCegarLoop]: trace histogram [4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:20:15,772 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_673379cb-290b-4bd4-8c16-66e7f23c2558/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-11-25 23:20:15,964 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_673379cb-290b-4bd4-8c16-66e7f23c2558/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-25 23:20:15,965 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-25 23:20:15,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:20:15,965 INFO L85 PathProgramCache]: Analyzing trace with hash -1108520060, now seen corresponding path program 1 times [2022-11-25 23:20:15,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:20:15,966 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241137968] [2022-11-25 23:20:15,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:20:15,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:20:16,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:20:16,144 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-25 23:20:16,145 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:20:16,147 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [241137968] [2022-11-25 23:20:16,147 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [241137968] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 23:20:16,147 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1619197891] [2022-11-25 23:20:16,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:20:16,148 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:20:16,148 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_673379cb-290b-4bd4-8c16-66e7f23c2558/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:20:16,149 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_673379cb-290b-4bd4-8c16-66e7f23c2558/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 23:20:16,179 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_673379cb-290b-4bd4-8c16-66e7f23c2558/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-25 23:20:16,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:20:16,330 INFO L263 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-25 23:20:16,332 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:20:16,362 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-25 23:20:16,362 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 23:20:16,362 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1619197891] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:20:16,363 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 23:20:16,363 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2022-11-25 23:20:16,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481023470] [2022-11-25 23:20:16,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:20:16,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 23:20:16,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:20:16,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 23:20:16,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-25 23:20:16,365 INFO L87 Difference]: Start difference. First operand 65 states and 87 transitions. Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-25 23:20:16,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:20:16,408 INFO L93 Difference]: Finished difference Result 92 states and 115 transitions. [2022-11-25 23:20:16,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 23:20:16,408 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 42 [2022-11-25 23:20:16,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:20:16,410 INFO L225 Difference]: With dead ends: 92 [2022-11-25 23:20:16,410 INFO L226 Difference]: Without dead ends: 73 [2022-11-25 23:20:16,410 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-25 23:20:16,411 INFO L413 NwaCegarLoop]: 85 mSDtfsCounter, 10 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 23:20:16,412 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 148 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 23:20:16,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2022-11-25 23:20:16,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 62. [2022-11-25 23:20:16,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 39 states have (on average 1.2564102564102564) internal successors, (49), 46 states have internal predecessors, (49), 17 states have call successors, (17), 4 states have call predecessors, (17), 4 states have return successors, (17), 14 states have call predecessors, (17), 17 states have call successors, (17) [2022-11-25 23:20:16,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 83 transitions. [2022-11-25 23:20:16,420 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 83 transitions. Word has length 42 [2022-11-25 23:20:16,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:20:16,420 INFO L495 AbstractCegarLoop]: Abstraction has 62 states and 83 transitions. [2022-11-25 23:20:16,421 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-25 23:20:16,421 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 83 transitions. [2022-11-25 23:20:16,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-11-25 23:20:16,422 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:20:16,422 INFO L195 NwaCegarLoop]: trace histogram [6, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:20:16,430 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_673379cb-290b-4bd4-8c16-66e7f23c2558/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-25 23:20:16,629 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_673379cb-290b-4bd4-8c16-66e7f23c2558/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:20:16,629 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-25 23:20:16,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:20:16,630 INFO L85 PathProgramCache]: Analyzing trace with hash -102459456, now seen corresponding path program 1 times [2022-11-25 23:20:16,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:20:16,630 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451118805] [2022-11-25 23:20:16,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:20:16,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:20:16,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:20:16,747 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-11-25 23:20:16,748 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:20:16,748 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1451118805] [2022-11-25 23:20:16,748 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1451118805] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 23:20:16,748 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1311744047] [2022-11-25 23:20:16,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:20:16,749 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:20:16,749 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_673379cb-290b-4bd4-8c16-66e7f23c2558/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:20:16,750 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_673379cb-290b-4bd4-8c16-66e7f23c2558/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 23:20:16,766 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_673379cb-290b-4bd4-8c16-66e7f23c2558/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-25 23:20:16,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:20:16,913 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-25 23:20:16,915 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:20:16,948 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-25 23:20:16,949 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 23:20:16,949 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1311744047] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:20:16,949 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 23:20:16,949 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2022-11-25 23:20:16,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721093272] [2022-11-25 23:20:16,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:20:16,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 23:20:16,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:20:16,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 23:20:16,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-25 23:20:16,952 INFO L87 Difference]: Start difference. First operand 62 states and 83 transitions. Second operand has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2022-11-25 23:20:17,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:20:17,003 INFO L93 Difference]: Finished difference Result 97 states and 123 transitions. [2022-11-25 23:20:17,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 23:20:17,004 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) Word has length 48 [2022-11-25 23:20:17,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:20:17,005 INFO L225 Difference]: With dead ends: 97 [2022-11-25 23:20:17,005 INFO L226 Difference]: Without dead ends: 62 [2022-11-25 23:20:17,006 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-25 23:20:17,007 INFO L413 NwaCegarLoop]: 67 mSDtfsCounter, 0 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 193 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 23:20:17,007 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 193 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 23:20:17,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2022-11-25 23:20:17,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2022-11-25 23:20:17,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 39 states have (on average 1.2307692307692308) internal successors, (48), 46 states have internal predecessors, (48), 17 states have call successors, (17), 4 states have call predecessors, (17), 4 states have return successors, (17), 14 states have call predecessors, (17), 17 states have call successors, (17) [2022-11-25 23:20:17,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 82 transitions. [2022-11-25 23:20:17,015 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 82 transitions. Word has length 48 [2022-11-25 23:20:17,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:20:17,016 INFO L495 AbstractCegarLoop]: Abstraction has 62 states and 82 transitions. [2022-11-25 23:20:17,016 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2022-11-25 23:20:17,016 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 82 transitions. [2022-11-25 23:20:17,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-11-25 23:20:17,018 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:20:17,018 INFO L195 NwaCegarLoop]: trace histogram [6, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:20:17,028 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_673379cb-290b-4bd4-8c16-66e7f23c2558/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-25 23:20:17,225 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_673379cb-290b-4bd4-8c16-66e7f23c2558/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:20:17,225 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-25 23:20:17,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:20:17,226 INFO L85 PathProgramCache]: Analyzing trace with hash -1704509761, now seen corresponding path program 1 times [2022-11-25 23:20:17,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:20:17,226 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268181132] [2022-11-25 23:20:17,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:20:17,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:20:17,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:20:17,393 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-11-25 23:20:17,393 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:20:17,394 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268181132] [2022-11-25 23:20:17,394 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1268181132] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 23:20:17,394 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [438077498] [2022-11-25 23:20:17,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:20:17,395 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:20:17,395 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_673379cb-290b-4bd4-8c16-66e7f23c2558/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:20:17,396 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_673379cb-290b-4bd4-8c16-66e7f23c2558/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 23:20:17,407 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_673379cb-290b-4bd4-8c16-66e7f23c2558/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-25 23:20:17,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:20:17,552 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-25 23:20:17,554 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:20:17,577 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-25 23:20:17,577 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 23:20:17,577 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [438077498] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:20:17,578 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 23:20:17,578 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2022-11-25 23:20:17,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405121305] [2022-11-25 23:20:17,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:20:17,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 23:20:17,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:20:17,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 23:20:17,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-25 23:20:17,581 INFO L87 Difference]: Start difference. First operand 62 states and 82 transitions. Second operand has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2022-11-25 23:20:17,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:20:17,636 INFO L93 Difference]: Finished difference Result 75 states and 95 transitions. [2022-11-25 23:20:17,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 23:20:17,637 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) Word has length 49 [2022-11-25 23:20:17,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:20:17,639 INFO L225 Difference]: With dead ends: 75 [2022-11-25 23:20:17,639 INFO L226 Difference]: Without dead ends: 62 [2022-11-25 23:20:17,639 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-25 23:20:17,640 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 0 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 190 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 23:20:17,641 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 190 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 23:20:17,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2022-11-25 23:20:17,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2022-11-25 23:20:17,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 39 states have (on average 1.1794871794871795) internal successors, (46), 46 states have internal predecessors, (46), 17 states have call successors, (17), 4 states have call predecessors, (17), 4 states have return successors, (17), 14 states have call predecessors, (17), 17 states have call successors, (17) [2022-11-25 23:20:17,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 80 transitions. [2022-11-25 23:20:17,650 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 80 transitions. Word has length 49 [2022-11-25 23:20:17,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:20:17,651 INFO L495 AbstractCegarLoop]: Abstraction has 62 states and 80 transitions. [2022-11-25 23:20:17,651 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2022-11-25 23:20:17,652 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 80 transitions. [2022-11-25 23:20:17,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-11-25 23:20:17,653 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:20:17,653 INFO L195 NwaCegarLoop]: trace histogram [6, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:20:17,664 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_673379cb-290b-4bd4-8c16-66e7f23c2558/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-11-25 23:20:17,859 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_673379cb-290b-4bd4-8c16-66e7f23c2558/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:20:17,860 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-25 23:20:17,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:20:17,860 INFO L85 PathProgramCache]: Analyzing trace with hash 1729429579, now seen corresponding path program 1 times [2022-11-25 23:20:17,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:20:17,860 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1812344956] [2022-11-25 23:20:17,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:20:17,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:20:17,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:20:17,997 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-11-25 23:20:17,997 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:20:17,998 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1812344956] [2022-11-25 23:20:17,998 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1812344956] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:20:17,998 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:20:17,999 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 23:20:17,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578357886] [2022-11-25 23:20:17,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:20:18,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 23:20:18,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:20:18,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 23:20:18,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 23:20:18,001 INFO L87 Difference]: Start difference. First operand 62 states and 80 transitions. Second operand has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 2 states have call successors, (10), 1 states have call predecessors, (10), 2 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-25 23:20:18,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:20:18,057 INFO L93 Difference]: Finished difference Result 77 states and 94 transitions. [2022-11-25 23:20:18,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 23:20:18,058 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 2 states have call successors, (10), 1 states have call predecessors, (10), 2 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) Word has length 53 [2022-11-25 23:20:18,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:20:18,060 INFO L225 Difference]: With dead ends: 77 [2022-11-25 23:20:18,060 INFO L226 Difference]: Without dead ends: 57 [2022-11-25 23:20:18,060 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 23:20:18,062 INFO L413 NwaCegarLoop]: 62 mSDtfsCounter, 0 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 182 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 23:20:18,063 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 182 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 23:20:18,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2022-11-25 23:20:18,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2022-11-25 23:20:18,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 36 states have (on average 1.1666666666666667) internal successors, (42), 42 states have internal predecessors, (42), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (15), 12 states have call predecessors, (15), 15 states have call successors, (15) [2022-11-25 23:20:18,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 72 transitions. [2022-11-25 23:20:18,079 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 72 transitions. Word has length 53 [2022-11-25 23:20:18,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:20:18,080 INFO L495 AbstractCegarLoop]: Abstraction has 57 states and 72 transitions. [2022-11-25 23:20:18,080 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 2 states have call successors, (10), 1 states have call predecessors, (10), 2 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-25 23:20:18,080 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 72 transitions. [2022-11-25 23:20:18,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-11-25 23:20:18,086 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:20:18,087 INFO L195 NwaCegarLoop]: trace histogram [6, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:20:18,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-25 23:20:18,087 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-25 23:20:18,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:20:18,088 INFO L85 PathProgramCache]: Analyzing trace with hash -1623266638, now seen corresponding path program 1 times [2022-11-25 23:20:18,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:20:18,088 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901180625] [2022-11-25 23:20:18,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:20:18,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:20:18,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:20:18,289 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-11-25 23:20:18,289 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:20:18,290 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901180625] [2022-11-25 23:20:18,290 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [901180625] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 23:20:18,290 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [782775159] [2022-11-25 23:20:18,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:20:18,290 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:20:18,291 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_673379cb-290b-4bd4-8c16-66e7f23c2558/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:20:18,292 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_673379cb-290b-4bd4-8c16-66e7f23c2558/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 23:20:18,301 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_673379cb-290b-4bd4-8c16-66e7f23c2558/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-25 23:20:18,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:20:18,455 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-25 23:20:18,462 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:20:18,523 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-11-25 23:20:18,524 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 23:20:18,693 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-11-25 23:20:18,693 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [782775159] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 23:20:18,694 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [326115995] [2022-11-25 23:20:18,730 INFO L159 IcfgInterpreter]: Started Sifa with 44 locations of interest [2022-11-25 23:20:18,730 INFO L166 IcfgInterpreter]: Building call graph [2022-11-25 23:20:18,735 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-25 23:20:18,742 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-25 23:20:18,743 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-25 23:20:22,812 INFO L197 IcfgInterpreter]: Interpreting procedure staticReturnsTrue with input of size 99 for LOIs [2022-11-25 23:20:22,834 INFO L197 IcfgInterpreter]: Interpreting procedure printIntLine with input of size 32 for LOIs [2022-11-25 23:20:22,850 INFO L197 IcfgInterpreter]: Interpreting procedure staticReturnsFalse with input of size 99 for LOIs [2022-11-25 23:20:22,869 INFO L197 IcfgInterpreter]: Interpreting procedure printLine with input of size 77 for LOIs [2022-11-25 23:20:22,880 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-25 23:21:38,138 WARN L233 SmtUtils]: Spent 1.22m on a formula simplification. DAG size of input: 207 DAG size of output: 138 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 23:21:48,539 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [326115995] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:21:48,539 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-25 23:21:48,539 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [4, 4, 4] total 37 [2022-11-25 23:21:48,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545454843] [2022-11-25 23:21:48,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:21:48,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-11-25 23:21:48,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:21:48,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-11-25 23:21:48,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=189, Invalid=1217, Unknown=0, NotChecked=0, Total=1406 [2022-11-25 23:21:48,543 INFO L87 Difference]: Start difference. First operand 57 states and 72 transitions. Second operand has 30 states, 20 states have (on average 1.45) internal successors, (29), 23 states have internal predecessors, (29), 10 states have call successors, (10), 3 states have call predecessors, (10), 4 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-11-25 23:21:59,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:21:59,619 INFO L93 Difference]: Finished difference Result 157 states and 192 transitions. [2022-11-25 23:21:59,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-11-25 23:21:59,620 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 20 states have (on average 1.45) internal successors, (29), 23 states have internal predecessors, (29), 10 states have call successors, (10), 3 states have call predecessors, (10), 4 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) Word has length 55 [2022-11-25 23:21:59,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:21:59,622 INFO L225 Difference]: With dead ends: 157 [2022-11-25 23:21:59,622 INFO L226 Difference]: Without dead ends: 92 [2022-11-25 23:21:59,623 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 126 SyntacticMatches, 5 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 670 ImplicationChecksByTransitivity, 92.7s TimeCoverageRelationStatistics Valid=347, Invalid=2005, Unknown=0, NotChecked=0, Total=2352 [2022-11-25 23:21:59,624 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 124 mSDsluCounter, 205 mSDsCounter, 0 mSdLazyCounter, 1165 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 231 SdHoareTripleChecker+Invalid, 1219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 1165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2022-11-25 23:21:59,625 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [143 Valid, 231 Invalid, 1219 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 1165 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2022-11-25 23:21:59,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2022-11-25 23:21:59,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 65. [2022-11-25 23:21:59,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 42 states have (on average 1.119047619047619) internal successors, (47), 46 states have internal predecessors, (47), 16 states have call successors, (16), 5 states have call predecessors, (16), 5 states have return successors, (16), 14 states have call predecessors, (16), 16 states have call successors, (16) [2022-11-25 23:21:59,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 79 transitions. [2022-11-25 23:21:59,648 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 79 transitions. Word has length 55 [2022-11-25 23:21:59,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:21:59,649 INFO L495 AbstractCegarLoop]: Abstraction has 65 states and 79 transitions. [2022-11-25 23:21:59,649 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 20 states have (on average 1.45) internal successors, (29), 23 states have internal predecessors, (29), 10 states have call successors, (10), 3 states have call predecessors, (10), 4 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-11-25 23:21:59,649 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 79 transitions. [2022-11-25 23:21:59,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-11-25 23:21:59,650 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:21:59,651 INFO L195 NwaCegarLoop]: trace histogram [6, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:21:59,657 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_673379cb-290b-4bd4-8c16-66e7f23c2558/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-25 23:21:59,857 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_673379cb-290b-4bd4-8c16-66e7f23c2558/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-25 23:21:59,857 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-25 23:21:59,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:21:59,858 INFO L85 PathProgramCache]: Analyzing trace with hash -1725580641, now seen corresponding path program 1 times [2022-11-25 23:21:59,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:21:59,858 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749000664] [2022-11-25 23:21:59,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:21:59,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:21:59,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:22:00,022 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2022-11-25 23:22:00,022 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:22:00,022 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749000664] [2022-11-25 23:22:00,022 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [749000664] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 23:22:00,023 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1410611370] [2022-11-25 23:22:00,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:22:00,023 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:22:00,023 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_673379cb-290b-4bd4-8c16-66e7f23c2558/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:22:00,024 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_673379cb-290b-4bd4-8c16-66e7f23c2558/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 23:22:00,028 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_673379cb-290b-4bd4-8c16-66e7f23c2558/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-25 23:22:00,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:22:00,171 INFO L263 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-25 23:22:00,174 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:22:00,228 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2022-11-25 23:22:00,229 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 23:22:00,358 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2022-11-25 23:22:00,359 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1410611370] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 23:22:00,359 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [542210492] [2022-11-25 23:22:00,363 INFO L159 IcfgInterpreter]: Started Sifa with 46 locations of interest [2022-11-25 23:22:00,363 INFO L166 IcfgInterpreter]: Building call graph [2022-11-25 23:22:00,364 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-25 23:22:00,365 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-25 23:22:00,365 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-25 23:22:03,640 INFO L197 IcfgInterpreter]: Interpreting procedure staticReturnsTrue with input of size 99 for LOIs [2022-11-25 23:22:03,659 INFO L197 IcfgInterpreter]: Interpreting procedure printIntLine with input of size 32 for LOIs [2022-11-25 23:22:03,661 INFO L197 IcfgInterpreter]: Interpreting procedure staticReturnsFalse with input of size 99 for LOIs [2022-11-25 23:22:03,681 INFO L197 IcfgInterpreter]: Interpreting procedure printLine with input of size 113 for LOIs [2022-11-25 23:22:03,714 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-25 23:23:00,220 WARN L233 SmtUtils]: Spent 54.00s on a formula simplification. DAG size of input: 207 DAG size of output: 141 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 23:24:13,570 WARN L233 SmtUtils]: Spent 1.21m on a formula simplification. DAG size of input: 205 DAG size of output: 137 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 23:25:26,750 WARN L233 SmtUtils]: Spent 1.21m on a formula simplification. DAG size of input: 207 DAG size of output: 139 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 23:26:44,822 WARN L233 SmtUtils]: Spent 1.29m on a formula simplification. DAG size of input: 212 DAG size of output: 141 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 23:28:00,551 WARN L233 SmtUtils]: Spent 1.25m on a formula simplification. DAG size of input: 288 DAG size of output: 177 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 23:28:02,303 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [542210492] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:28:02,304 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-25 23:28:02,304 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [29] imperfect sequences [4, 4, 4] total 38 [2022-11-25 23:28:02,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760177302] [2022-11-25 23:28:02,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:28:02,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-11-25 23:28:02,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:28:02,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-11-25 23:28:02,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=201, Invalid=1281, Unknown=0, NotChecked=0, Total=1482 [2022-11-25 23:28:02,310 INFO L87 Difference]: Start difference. First operand 65 states and 79 transitions. Second operand has 31 states, 21 states have (on average 1.4285714285714286) internal successors, (30), 24 states have internal predecessors, (30), 11 states have call successors, (11), 3 states have call predecessors, (11), 4 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2022-11-25 23:28:17,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:28:17,052 INFO L93 Difference]: Finished difference Result 118 states and 141 transitions. [2022-11-25 23:28:17,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-25 23:28:17,053 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 21 states have (on average 1.4285714285714286) internal successors, (30), 24 states have internal predecessors, (30), 11 states have call successors, (11), 3 states have call predecessors, (11), 4 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) Word has length 59 [2022-11-25 23:28:17,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:28:17,055 INFO L225 Difference]: With dead ends: 118 [2022-11-25 23:28:17,055 INFO L226 Difference]: Without dead ends: 93 [2022-11-25 23:28:17,056 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 137 SyntacticMatches, 5 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 694 ImplicationChecksByTransitivity, 368.5s TimeCoverageRelationStatistics Valid=386, Invalid=2164, Unknown=0, NotChecked=0, Total=2550 [2022-11-25 23:28:17,057 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 162 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 1052 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 174 SdHoareTripleChecker+Valid, 187 SdHoareTripleChecker+Invalid, 1125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 1052 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2022-11-25 23:28:17,057 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [174 Valid, 187 Invalid, 1125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 1052 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2022-11-25 23:28:17,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2022-11-25 23:28:17,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 68. [2022-11-25 23:28:17,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 44 states have (on average 1.1136363636363635) internal successors, (49), 48 states have internal predecessors, (49), 16 states have call successors, (16), 6 states have call predecessors, (16), 6 states have return successors, (16), 14 states have call predecessors, (16), 16 states have call successors, (16) [2022-11-25 23:28:17,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 81 transitions. [2022-11-25 23:28:17,084 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 81 transitions. Word has length 59 [2022-11-25 23:28:17,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:28:17,084 INFO L495 AbstractCegarLoop]: Abstraction has 68 states and 81 transitions. [2022-11-25 23:28:17,084 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 21 states have (on average 1.4285714285714286) internal successors, (30), 24 states have internal predecessors, (30), 11 states have call successors, (11), 3 states have call predecessors, (11), 4 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2022-11-25 23:28:17,084 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 81 transitions. [2022-11-25 23:28:17,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-11-25 23:28:17,085 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:28:17,085 INFO L195 NwaCegarLoop]: trace histogram [6, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:28:17,091 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_673379cb-290b-4bd4-8c16-66e7f23c2558/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-25 23:28:17,286 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_673379cb-290b-4bd4-8c16-66e7f23c2558/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-25 23:28:17,286 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-25 23:28:17,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:28:17,287 INFO L85 PathProgramCache]: Analyzing trace with hash 816440348, now seen corresponding path program 1 times [2022-11-25 23:28:17,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:28:17,287 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944410671] [2022-11-25 23:28:17,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:28:17,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:28:17,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:28:17,473 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2022-11-25 23:28:17,474 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:28:17,474 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1944410671] [2022-11-25 23:28:17,474 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1944410671] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 23:28:17,474 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1390290802] [2022-11-25 23:28:17,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:28:17,475 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:28:17,475 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_673379cb-290b-4bd4-8c16-66e7f23c2558/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:28:17,476 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_673379cb-290b-4bd4-8c16-66e7f23c2558/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 23:28:17,499 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_673379cb-290b-4bd4-8c16-66e7f23c2558/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-25 23:28:17,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:28:17,629 INFO L263 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-25 23:28:17,633 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:28:17,682 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2022-11-25 23:28:17,683 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 23:28:17,813 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2022-11-25 23:28:17,814 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1390290802] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 23:28:17,814 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [265422993] [2022-11-25 23:28:17,817 INFO L159 IcfgInterpreter]: Started Sifa with 46 locations of interest [2022-11-25 23:28:17,818 INFO L166 IcfgInterpreter]: Building call graph [2022-11-25 23:28:17,818 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-25 23:28:17,819 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-25 23:28:17,819 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-25 23:28:21,796 INFO L197 IcfgInterpreter]: Interpreting procedure staticReturnsTrue with input of size 99 for LOIs [2022-11-25 23:28:21,815 INFO L197 IcfgInterpreter]: Interpreting procedure printIntLine with input of size 32 for LOIs [2022-11-25 23:28:21,818 INFO L197 IcfgInterpreter]: Interpreting procedure staticReturnsFalse with input of size 99 for LOIs [2022-11-25 23:28:21,836 INFO L197 IcfgInterpreter]: Interpreting procedure printLine with input of size 113 for LOIs [2022-11-25 23:28:21,882 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-25 23:29:41,675 WARN L233 SmtUtils]: Spent 1.22m on a formula simplification. DAG size of input: 204 DAG size of output: 136 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 23:30:55,005 WARN L233 SmtUtils]: Spent 1.22m on a formula simplification. DAG size of input: 205 DAG size of output: 137 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 23:32:08,781 WARN L233 SmtUtils]: Spent 1.22m on a formula simplification. DAG size of input: 207 DAG size of output: 139 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 23:33:21,107 WARN L233 SmtUtils]: Spent 1.18m on a formula simplification. DAG size of input: 213 DAG size of output: 144 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 23:34:37,000 WARN L233 SmtUtils]: Spent 1.22m on a formula simplification. DAG size of input: 289 DAG size of output: 178 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 23:34:38,705 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [265422993] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:34:38,705 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-25 23:34:38,705 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [29] imperfect sequences [4, 4, 4] total 38 [2022-11-25 23:34:38,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985812150] [2022-11-25 23:34:38,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:34:38,706 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-11-25 23:34:38,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:34:38,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-11-25 23:34:38,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=194, Invalid=1288, Unknown=0, NotChecked=0, Total=1482 [2022-11-25 23:34:38,710 INFO L87 Difference]: Start difference. First operand 68 states and 81 transitions. Second operand has 31 states, 21 states have (on average 1.4285714285714286) internal successors, (30), 24 states have internal predecessors, (30), 11 states have call successors, (11), 3 states have call predecessors, (11), 4 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2022-11-25 23:34:52,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:34:52,355 INFO L93 Difference]: Finished difference Result 151 states and 182 transitions. [2022-11-25 23:34:52,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-25 23:34:52,360 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 21 states have (on average 1.4285714285714286) internal successors, (30), 24 states have internal predecessors, (30), 11 states have call successors, (11), 3 states have call predecessors, (11), 4 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) Word has length 59 [2022-11-25 23:34:52,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:34:52,362 INFO L225 Difference]: With dead ends: 151 [2022-11-25 23:34:52,362 INFO L226 Difference]: Without dead ends: 127 [2022-11-25 23:34:52,363 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 136 SyntacticMatches, 6 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 690 ImplicationChecksByTransitivity, 386.0s TimeCoverageRelationStatistics Valid=363, Invalid=2087, Unknown=0, NotChecked=0, Total=2450 [2022-11-25 23:34:52,363 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 143 mSDsluCounter, 312 mSDsCounter, 0 mSdLazyCounter, 1256 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 353 SdHoareTripleChecker+Invalid, 1316 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 1256 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2022-11-25 23:34:52,364 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [169 Valid, 353 Invalid, 1316 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 1256 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2022-11-25 23:34:52,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2022-11-25 23:34:52,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 75. [2022-11-25 23:34:52,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 49 states have (on average 1.1020408163265305) internal successors, (54), 52 states have internal predecessors, (54), 18 states have call successors, (18), 6 states have call predecessors, (18), 6 states have return successors, (18), 17 states have call predecessors, (18), 18 states have call successors, (18) [2022-11-25 23:34:52,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 90 transitions. [2022-11-25 23:34:52,396 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 90 transitions. Word has length 59 [2022-11-25 23:34:52,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:34:52,396 INFO L495 AbstractCegarLoop]: Abstraction has 75 states and 90 transitions. [2022-11-25 23:34:52,396 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 21 states have (on average 1.4285714285714286) internal successors, (30), 24 states have internal predecessors, (30), 11 states have call successors, (11), 3 states have call predecessors, (11), 4 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2022-11-25 23:34:52,397 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 90 transitions. [2022-11-25 23:34:52,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-11-25 23:34:52,397 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:34:52,398 INFO L195 NwaCegarLoop]: trace histogram [6, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:34:52,403 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_673379cb-290b-4bd4-8c16-66e7f23c2558/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-25 23:34:52,598 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_673379cb-290b-4bd4-8c16-66e7f23c2558/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:34:52,598 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-25 23:34:52,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:34:52,599 INFO L85 PathProgramCache]: Analyzing trace with hash 1581739411, now seen corresponding path program 1 times [2022-11-25 23:34:52,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:34:52,599 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [135857378] [2022-11-25 23:34:52,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:34:52,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:34:52,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:34:52,746 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2022-11-25 23:34:52,746 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:34:52,746 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [135857378] [2022-11-25 23:34:52,746 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [135857378] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 23:34:52,746 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1521713480] [2022-11-25 23:34:52,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:34:52,747 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:34:52,747 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_673379cb-290b-4bd4-8c16-66e7f23c2558/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:34:52,748 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_673379cb-290b-4bd4-8c16-66e7f23c2558/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 23:34:52,779 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_673379cb-290b-4bd4-8c16-66e7f23c2558/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-25 23:34:52,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:34:52,908 INFO L263 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-25 23:34:52,909 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:34:52,954 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2022-11-25 23:34:52,954 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 23:34:53,056 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2022-11-25 23:34:53,056 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1521713480] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 23:34:53,056 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [901236922] [2022-11-25 23:34:53,059 INFO L159 IcfgInterpreter]: Started Sifa with 48 locations of interest [2022-11-25 23:34:53,059 INFO L166 IcfgInterpreter]: Building call graph [2022-11-25 23:34:53,060 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-25 23:34:53,060 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-25 23:34:53,060 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-25 23:34:55,915 INFO L197 IcfgInterpreter]: Interpreting procedure staticReturnsTrue with input of size 99 for LOIs [2022-11-25 23:34:55,933 INFO L197 IcfgInterpreter]: Interpreting procedure printIntLine with input of size 78 for LOIs [2022-11-25 23:34:55,955 INFO L197 IcfgInterpreter]: Interpreting procedure staticReturnsFalse with input of size 99 for LOIs [2022-11-25 23:34:55,972 INFO L197 IcfgInterpreter]: Interpreting procedure printLine with input of size 77 for LOIs [2022-11-25 23:34:55,980 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-25 23:35:11,993 WARN L233 SmtUtils]: Spent 7.66s on a formula simplification. DAG size of input: 288 DAG size of output: 177 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 23:35:15,435 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [901236922] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:35:15,436 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-25 23:35:15,436 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [30] imperfect sequences [4, 4, 4] total 39 [2022-11-25 23:35:15,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53734827] [2022-11-25 23:35:15,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:35:15,437 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-11-25 23:35:15,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:35:15,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-11-25 23:35:15,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=216, Invalid=1344, Unknown=0, NotChecked=0, Total=1560 [2022-11-25 23:35:15,439 INFO L87 Difference]: Start difference. First operand 75 states and 90 transitions. Second operand has 32 states, 22 states have (on average 1.4545454545454546) internal successors, (32), 25 states have internal predecessors, (32), 11 states have call successors, (11), 3 states have call predecessors, (11), 4 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11)