./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/array-multidimensional/max-2-u.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 2329fc70 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_960947e5-0355-4cdc-82b9-96fba19b8ae1/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_960947e5-0355-4cdc-82b9-96fba19b8ae1/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_960947e5-0355-4cdc-82b9-96fba19b8ae1/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_960947e5-0355-4cdc-82b9-96fba19b8ae1/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/array-multidimensional/max-2-u.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_960947e5-0355-4cdc-82b9-96fba19b8ae1/bin/utaipan-gh47qXpMRh/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_960947e5-0355-4cdc-82b9-96fba19b8ae1/bin/utaipan-gh47qXpMRh --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash d56d1653edfb1a7b1c72e82d390b1b74d1df9114797a2f1426eb2285f6c4408f --- 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-2329fc7 [2022-12-14 11:55:16,844 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 11:55:16,846 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 11:55:16,866 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 11:55:16,866 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 11:55:16,867 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 11:55:16,868 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 11:55:16,870 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 11:55:16,872 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 11:55:16,873 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 11:55:16,873 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 11:55:16,875 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 11:55:16,875 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 11:55:16,876 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 11:55:16,877 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 11:55:16,878 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 11:55:16,879 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 11:55:16,880 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 11:55:16,882 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 11:55:16,884 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 11:55:16,885 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 11:55:16,886 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 11:55:16,887 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 11:55:16,888 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 11:55:16,892 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 11:55:16,892 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 11:55:16,892 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 11:55:16,893 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 11:55:16,894 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 11:55:16,895 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 11:55:16,895 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 11:55:16,896 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 11:55:16,897 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 11:55:16,897 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 11:55:16,898 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 11:55:16,898 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 11:55:16,899 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 11:55:16,899 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 11:55:16,899 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 11:55:16,900 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 11:55:16,900 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 11:55:16,901 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_960947e5-0355-4cdc-82b9-96fba19b8ae1/bin/utaipan-gh47qXpMRh/config/svcomp-Overflow-32bit-Taipan_Default.epf [2022-12-14 11:55:16,922 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 11:55:16,922 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 11:55:16,922 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 11:55:16,923 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 11:55:16,923 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 11:55:16,924 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 11:55:16,924 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 11:55:16,924 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 11:55:16,924 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 11:55:16,924 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 11:55:16,924 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 11:55:16,924 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 11:55:16,925 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 11:55:16,925 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 11:55:16,925 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 11:55:16,925 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 11:55:16,925 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 11:55:16,925 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 11:55:16,926 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 11:55:16,926 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 11:55:16,926 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-14 11:55:16,926 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 11:55:16,926 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 11:55:16,926 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 11:55:16,927 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 11:55:16,927 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 11:55:16,927 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 11:55:16,927 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-12-14 11:55:16,927 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 11:55:16,927 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 11:55:16,928 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 11:55:16,928 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 11:55:16,928 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 11:55:16,928 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 11:55:16,928 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 11:55:16,928 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 11:55:16,928 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 11:55:16,928 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 11:55:16,929 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 11:55:16,929 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 11:55:16,929 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 11:55:16,929 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 11:55:16,929 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 11:55:16,929 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_960947e5-0355-4cdc-82b9-96fba19b8ae1/bin/utaipan-gh47qXpMRh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_960947e5-0355-4cdc-82b9-96fba19b8ae1/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d56d1653edfb1a7b1c72e82d390b1b74d1df9114797a2f1426eb2285f6c4408f [2022-12-14 11:55:17,094 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 11:55:17,112 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 11:55:17,114 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 11:55:17,115 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 11:55:17,115 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 11:55:17,116 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_960947e5-0355-4cdc-82b9-96fba19b8ae1/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/array-multidimensional/max-2-u.c [2022-12-14 11:55:19,674 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 11:55:19,784 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 11:55:19,784 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_960947e5-0355-4cdc-82b9-96fba19b8ae1/sv-benchmarks/c/array-multidimensional/max-2-u.c [2022-12-14 11:55:19,789 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_960947e5-0355-4cdc-82b9-96fba19b8ae1/bin/utaipan-gh47qXpMRh/data/3d201120c/2cbe861df51f4d3eacb5f6883cc1de59/FLAG0fb59bc38 [2022-12-14 11:55:19,800 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_960947e5-0355-4cdc-82b9-96fba19b8ae1/bin/utaipan-gh47qXpMRh/data/3d201120c/2cbe861df51f4d3eacb5f6883cc1de59 [2022-12-14 11:55:19,802 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 11:55:19,804 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 11:55:19,805 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 11:55:19,805 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 11:55:19,808 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 11:55:19,808 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 11:55:19" (1/1) ... [2022-12-14 11:55:19,809 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@76e8c754 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:55:19, skipping insertion in model container [2022-12-14 11:55:19,809 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 11:55:19" (1/1) ... [2022-12-14 11:55:19,815 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 11:55:19,825 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 11:55:19,936 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_960947e5-0355-4cdc-82b9-96fba19b8ae1/sv-benchmarks/c/array-multidimensional/max-2-u.c[319,332] [2022-12-14 11:55:19,951 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 11:55:19,958 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 11:55:19,967 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_960947e5-0355-4cdc-82b9-96fba19b8ae1/sv-benchmarks/c/array-multidimensional/max-2-u.c[319,332] [2022-12-14 11:55:19,972 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 11:55:19,982 INFO L208 MainTranslator]: Completed translation [2022-12-14 11:55:19,982 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:55:19 WrapperNode [2022-12-14 11:55:19,983 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 11:55:19,983 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 11:55:19,983 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 11:55:19,983 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 11:55:19,989 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:55:19" (1/1) ... [2022-12-14 11:55:19,994 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:55:19" (1/1) ... [2022-12-14 11:55:20,007 INFO L138 Inliner]: procedures = 14, calls = 16, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 95 [2022-12-14 11:55:20,007 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 11:55:20,008 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 11:55:20,008 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 11:55:20,008 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 11:55:20,014 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:55:19" (1/1) ... [2022-12-14 11:55:20,014 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:55:19" (1/1) ... [2022-12-14 11:55:20,015 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:55:19" (1/1) ... [2022-12-14 11:55:20,015 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:55:19" (1/1) ... [2022-12-14 11:55:20,019 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:55:19" (1/1) ... [2022-12-14 11:55:20,022 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:55:19" (1/1) ... [2022-12-14 11:55:20,022 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:55:19" (1/1) ... [2022-12-14 11:55:20,023 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:55:19" (1/1) ... [2022-12-14 11:55:20,024 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 11:55:20,025 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 11:55:20,025 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 11:55:20,025 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 11:55:20,026 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:55:19" (1/1) ... [2022-12-14 11:55:20,031 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 11:55:20,039 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_960947e5-0355-4cdc-82b9-96fba19b8ae1/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 11:55:20,049 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_960947e5-0355-4cdc-82b9-96fba19b8ae1/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 11:55:20,051 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_960947e5-0355-4cdc-82b9-96fba19b8ae1/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 11:55:20,087 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 11:55:20,087 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 11:55:20,087 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-14 11:55:20,087 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-14 11:55:20,087 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 11:55:20,088 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 11:55:20,088 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-14 11:55:20,088 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-14 11:55:20,151 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 11:55:20,153 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 11:55:20,301 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 11:55:20,346 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 11:55:20,347 INFO L300 CfgBuilder]: Removed 6 assume(true) statements. [2022-12-14 11:55:20,349 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 11:55:20 BoogieIcfgContainer [2022-12-14 11:55:20,349 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 11:55:20,352 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 11:55:20,352 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 11:55:20,355 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 11:55:20,355 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 11:55:19" (1/3) ... [2022-12-14 11:55:20,356 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24a27f0c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 11:55:20, skipping insertion in model container [2022-12-14 11:55:20,356 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:55:19" (2/3) ... [2022-12-14 11:55:20,356 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24a27f0c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 11:55:20, skipping insertion in model container [2022-12-14 11:55:20,356 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 11:55:20" (3/3) ... [2022-12-14 11:55:20,357 INFO L112 eAbstractionObserver]: Analyzing ICFG max-2-u.c [2022-12-14 11:55:20,376 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 11:55:20,376 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2022-12-14 11:55:20,415 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 11:55:20,420 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;@5d823298, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 11:55:20,421 INFO L358 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2022-12-14 11:55:20,424 INFO L276 IsEmpty]: Start isEmpty. Operand has 32 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 31 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:55:20,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-12-14 11:55:20,428 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:55:20,428 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-12-14 11:55:20,429 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-12-14 11:55:20,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:55:20,435 INFO L85 PathProgramCache]: Analyzing trace with hash 4569235, now seen corresponding path program 1 times [2022-12-14 11:55:20,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:55:20,442 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359580720] [2022-12-14 11:55:20,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:55:20,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:55:20,517 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-14 11:55:20,518 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1240478592] [2022-12-14 11:55:20,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:55:20,518 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:55:20,518 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_960947e5-0355-4cdc-82b9-96fba19b8ae1/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 11:55:20,519 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_960947e5-0355-4cdc-82b9-96fba19b8ae1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 11:55:20,520 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_960947e5-0355-4cdc-82b9-96fba19b8ae1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-14 11:55:20,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:55:20,571 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-14 11:55:20,574 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:55:20,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:55:20,598 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 11:55:20,598 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:55:20,598 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1359580720] [2022-12-14 11:55:20,598 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-14 11:55:20,598 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1240478592] [2022-12-14 11:55:20,599 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1240478592] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:55:20,599 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 11:55:20,599 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 11:55:20,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795849392] [2022-12-14 11:55:20,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:55:20,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 11:55:20,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:55:20,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 11:55:20,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 11:55:20,626 INFO L87 Difference]: Start difference. First operand has 32 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 31 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:55:20,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:55:20,669 INFO L93 Difference]: Finished difference Result 32 states and 37 transitions. [2022-12-14 11:55:20,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 11:55:20,672 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2022-12-14 11:55:20,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:55:20,677 INFO L225 Difference]: With dead ends: 32 [2022-12-14 11:55:20,677 INFO L226 Difference]: Without dead ends: 28 [2022-12-14 11:55:20,679 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 11:55:20,681 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 24 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 11:55:20,682 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 15 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 11:55:20,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2022-12-14 11:55:20,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2022-12-14 11:55:20,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 19 states have (on average 1.736842105263158) internal successors, (33), 27 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:55:20,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 33 transitions. [2022-12-14 11:55:20,705 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 33 transitions. Word has length 4 [2022-12-14 11:55:20,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:55:20,705 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 33 transitions. [2022-12-14 11:55:20,705 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:55:20,705 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 33 transitions. [2022-12-14 11:55:20,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-12-14 11:55:20,706 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:55:20,706 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-12-14 11:55:20,712 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_960947e5-0355-4cdc-82b9-96fba19b8ae1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-14 11:55:20,907 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_960947e5-0355-4cdc-82b9-96fba19b8ae1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-12-14 11:55:20,909 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-12-14 11:55:20,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:55:20,911 INFO L85 PathProgramCache]: Analyzing trace with hash 4572807, now seen corresponding path program 1 times [2022-12-14 11:55:20,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:55:20,912 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [269661626] [2022-12-14 11:55:20,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:55:20,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:55:20,932 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-14 11:55:20,932 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [214696048] [2022-12-14 11:55:20,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:55:20,933 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:55:20,934 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_960947e5-0355-4cdc-82b9-96fba19b8ae1/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 11:55:20,937 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_960947e5-0355-4cdc-82b9-96fba19b8ae1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 11:55:20,941 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_960947e5-0355-4cdc-82b9-96fba19b8ae1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-14 11:55:21,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:55:21,095 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-14 11:55:21,097 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:55:21,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:55:21,133 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 11:55:21,133 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:55:21,134 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [269661626] [2022-12-14 11:55:21,134 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-14 11:55:21,134 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [214696048] [2022-12-14 11:55:21,135 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [214696048] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:55:21,135 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 11:55:21,135 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-14 11:55:21,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439281991] [2022-12-14 11:55:21,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:55:21,138 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 11:55:21,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:55:21,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 11:55:21,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 11:55:21,140 INFO L87 Difference]: Start difference. First operand 28 states and 33 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:55:21,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:55:21,185 INFO L93 Difference]: Finished difference Result 28 states and 33 transitions. [2022-12-14 11:55:21,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 11:55:21,185 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2022-12-14 11:55:21,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:55:21,186 INFO L225 Difference]: With dead ends: 28 [2022-12-14 11:55:21,186 INFO L226 Difference]: Without dead ends: 25 [2022-12-14 11:55:21,186 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 11:55:21,187 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 22 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 11:55:21,187 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 9 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 11:55:21,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2022-12-14 11:55:21,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2022-12-14 11:55:21,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 19 states have (on average 1.5789473684210527) internal successors, (30), 24 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:55:21,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 30 transitions. [2022-12-14 11:55:21,191 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 30 transitions. Word has length 4 [2022-12-14 11:55:21,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:55:21,191 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 30 transitions. [2022-12-14 11:55:21,192 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:55:21,192 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 30 transitions. [2022-12-14 11:55:21,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-12-14 11:55:21,192 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:55:21,192 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-12-14 11:55:21,196 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_960947e5-0355-4cdc-82b9-96fba19b8ae1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-12-14 11:55:21,393 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_960947e5-0355-4cdc-82b9-96fba19b8ae1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:55:21,395 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-12-14 11:55:21,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:55:21,398 INFO L85 PathProgramCache]: Analyzing trace with hash 141646339, now seen corresponding path program 1 times [2022-12-14 11:55:21,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:55:21,400 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093559694] [2022-12-14 11:55:21,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:55:21,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:55:21,429 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-14 11:55:21,430 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [939346090] [2022-12-14 11:55:21,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:55:21,431 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:55:21,432 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_960947e5-0355-4cdc-82b9-96fba19b8ae1/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 11:55:21,436 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_960947e5-0355-4cdc-82b9-96fba19b8ae1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 11:55:21,439 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_960947e5-0355-4cdc-82b9-96fba19b8ae1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-14 11:55:21,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:55:21,520 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-14 11:55:21,521 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:55:21,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:55:21,530 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 11:55:21,531 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:55:21,531 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1093559694] [2022-12-14 11:55:21,531 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-14 11:55:21,531 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [939346090] [2022-12-14 11:55:21,531 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [939346090] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:55:21,532 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 11:55:21,532 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 11:55:21,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868987349] [2022-12-14 11:55:21,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:55:21,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 11:55:21,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:55:21,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 11:55:21,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 11:55:21,534 INFO L87 Difference]: Start difference. First operand 25 states and 30 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:55:21,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:55:21,579 INFO L93 Difference]: Finished difference Result 49 states and 59 transitions. [2022-12-14 11:55:21,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 11:55:21,579 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-12-14 11:55:21,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:55:21,580 INFO L225 Difference]: With dead ends: 49 [2022-12-14 11:55:21,580 INFO L226 Difference]: Without dead ends: 46 [2022-12-14 11:55:21,580 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 11:55:21,581 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 16 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 11:55:21,582 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 24 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 11:55:21,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2022-12-14 11:55:21,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 34. [2022-12-14 11:55:21,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 28 states have (on average 1.5) internal successors, (42), 33 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:55:21,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 42 transitions. [2022-12-14 11:55:21,589 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 42 transitions. Word has length 5 [2022-12-14 11:55:21,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:55:21,589 INFO L495 AbstractCegarLoop]: Abstraction has 34 states and 42 transitions. [2022-12-14 11:55:21,589 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:55:21,590 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 42 transitions. [2022-12-14 11:55:21,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-12-14 11:55:21,590 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:55:21,590 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-12-14 11:55:21,595 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_960947e5-0355-4cdc-82b9-96fba19b8ae1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-14 11:55:21,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_960947e5-0355-4cdc-82b9-96fba19b8ae1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-12-14 11:55:21,793 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-12-14 11:55:21,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:55:21,794 INFO L85 PathProgramCache]: Analyzing trace with hash 141757078, now seen corresponding path program 1 times [2022-12-14 11:55:21,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:55:21,796 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669338618] [2022-12-14 11:55:21,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:55:21,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:55:21,811 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-14 11:55:21,812 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [876521765] [2022-12-14 11:55:21,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:55:21,813 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:55:21,813 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_960947e5-0355-4cdc-82b9-96fba19b8ae1/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 11:55:21,816 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_960947e5-0355-4cdc-82b9-96fba19b8ae1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 11:55:21,819 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_960947e5-0355-4cdc-82b9-96fba19b8ae1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-14 11:55:21,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:55:21,887 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-14 11:55:21,887 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:55:21,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:55:21,896 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 11:55:21,897 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:55:21,897 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1669338618] [2022-12-14 11:55:21,897 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-14 11:55:21,897 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [876521765] [2022-12-14 11:55:21,897 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [876521765] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:55:21,897 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 11:55:21,898 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-14 11:55:21,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421857147] [2022-12-14 11:55:21,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:55:21,898 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 11:55:21,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:55:21,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 11:55:21,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 11:55:21,899 INFO L87 Difference]: Start difference. First operand 34 states and 42 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:55:21,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:55:21,949 INFO L93 Difference]: Finished difference Result 67 states and 83 transitions. [2022-12-14 11:55:21,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 11:55:21,949 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-12-14 11:55:21,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:55:21,950 INFO L225 Difference]: With dead ends: 67 [2022-12-14 11:55:21,950 INFO L226 Difference]: Without dead ends: 64 [2022-12-14 11:55:21,950 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 11:55:21,951 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 18 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 11:55:21,952 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 21 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 11:55:21,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2022-12-14 11:55:21,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 61. [2022-12-14 11:55:21,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 55 states have (on average 1.4545454545454546) internal successors, (80), 60 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:55:21,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 80 transitions. [2022-12-14 11:55:21,960 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 80 transitions. Word has length 5 [2022-12-14 11:55:21,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:55:21,960 INFO L495 AbstractCegarLoop]: Abstraction has 61 states and 80 transitions. [2022-12-14 11:55:21,960 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:55:21,960 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 80 transitions. [2022-12-14 11:55:21,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-12-14 11:55:21,961 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:55:21,961 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1] [2022-12-14 11:55:21,965 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_960947e5-0355-4cdc-82b9-96fba19b8ae1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-14 11:55:22,162 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_960947e5-0355-4cdc-82b9-96fba19b8ae1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:55:22,164 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-12-14 11:55:22,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:55:22,178 INFO L85 PathProgramCache]: Analyzing trace with hash 2128250193, now seen corresponding path program 1 times [2022-12-14 11:55:22,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:55:22,178 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049743358] [2022-12-14 11:55:22,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:55:22,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:55:22,197 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-14 11:55:22,197 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1135460837] [2022-12-14 11:55:22,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:55:22,198 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:55:22,198 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_960947e5-0355-4cdc-82b9-96fba19b8ae1/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 11:55:22,200 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_960947e5-0355-4cdc-82b9-96fba19b8ae1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 11:55:22,202 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_960947e5-0355-4cdc-82b9-96fba19b8ae1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-14 11:55:22,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:55:22,257 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 11:55:22,258 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:55:22,291 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:55:22,291 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 11:55:22,309 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:55:22,309 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:55:22,309 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049743358] [2022-12-14 11:55:22,310 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-14 11:55:22,310 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1135460837] [2022-12-14 11:55:22,310 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1135460837] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 11:55:22,310 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1956597701] [2022-12-14 11:55:22,327 INFO L159 IcfgInterpreter]: Started Sifa with 6 locations of interest [2022-12-14 11:55:22,327 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 11:55:22,330 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 11:55:22,335 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 11:55:22,336 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 11:55:22,395 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:55:22,424 INFO L321 Elim1Store]: treesize reduction 32, result has 37.3 percent of original size [2022-12-14 11:55:22,425 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 44 [2022-12-14 11:55:22,447 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:55:22,468 INFO L321 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2022-12-14 11:55:22,468 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 8 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 32 treesize of output 49 [2022-12-14 11:55:22,516 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:55:22,517 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 37 [2022-12-14 11:55:22,570 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:55:22,573 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:55:22,574 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 58 [2022-12-14 11:55:22,725 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:55:22,727 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:55:22,729 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:55:22,733 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:55:22,734 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:55:22,741 INFO L321 Elim1Store]: treesize reduction 39, result has 2.5 percent of original size [2022-12-14 11:55:22,742 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 338 treesize of output 286 [2022-12-14 11:55:22,856 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2022-12-14 11:55:22,886 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2022-12-14 11:55:22,901 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 11:55:23,613 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '542#(and (< 2147483646 |ULTIMATE.start_main_~j~0#1|) (= |ULTIMATE.start_main_~i~0#1| 0) (= |ULTIMATE.start_main_~m~0#1| 1000) (<= 0 |ULTIMATE.start_main_~#A~0#1.base|) (= |ULTIMATE.start_main_~#A~0#1.offset| 0) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |ULTIMATE.start_main_~n~0#1| 1500) (= |#NULL.base| 0))' at error location [2022-12-14 11:55:23,613 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 11:55:23,613 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-14 11:55:23,613 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2022-12-14 11:55:23,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968743046] [2022-12-14 11:55:23,614 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-14 11:55:23,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-14 11:55:23,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:55:23,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-14 11:55:23,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2022-12-14 11:55:23,615 INFO L87 Difference]: Start difference. First operand 61 states and 80 transitions. Second operand has 6 states, 5 states have (on average 3.0) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:55:23,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:55:23,718 INFO L93 Difference]: Finished difference Result 190 states and 250 transitions. [2022-12-14 11:55:23,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 11:55:23,719 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-12-14 11:55:23,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:55:23,721 INFO L225 Difference]: With dead ends: 190 [2022-12-14 11:55:23,721 INFO L226 Difference]: Without dead ends: 187 [2022-12-14 11:55:23,722 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2022-12-14 11:55:23,723 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 128 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 11:55:23,723 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 51 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 11:55:23,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2022-12-14 11:55:23,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 115. [2022-12-14 11:55:23,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 109 states have (on average 1.3944954128440368) internal successors, (152), 114 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:55:23,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 152 transitions. [2022-12-14 11:55:23,739 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 152 transitions. Word has length 8 [2022-12-14 11:55:23,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:55:23,739 INFO L495 AbstractCegarLoop]: Abstraction has 115 states and 152 transitions. [2022-12-14 11:55:23,739 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:55:23,739 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 152 transitions. [2022-12-14 11:55:23,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-12-14 11:55:23,740 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:55:23,740 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1] [2022-12-14 11:55:23,744 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_960947e5-0355-4cdc-82b9-96fba19b8ae1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-14 11:55:23,940 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_960947e5-0355-4cdc-82b9-96fba19b8ae1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:55:23,941 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-12-14 11:55:23,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:55:23,941 INFO L85 PathProgramCache]: Analyzing trace with hash 741664148, now seen corresponding path program 1 times [2022-12-14 11:55:23,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:55:23,941 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61198554] [2022-12-14 11:55:23,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:55:23,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:55:23,946 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-14 11:55:23,947 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1305440573] [2022-12-14 11:55:23,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:55:23,947 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:55:23,947 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_960947e5-0355-4cdc-82b9-96fba19b8ae1/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 11:55:23,948 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_960947e5-0355-4cdc-82b9-96fba19b8ae1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 11:55:23,949 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_960947e5-0355-4cdc-82b9-96fba19b8ae1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-14 11:55:23,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:55:23,980 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 11:55:23,980 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:55:23,993 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-14 11:55:23,993 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 11:55:23,993 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:55:23,993 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [61198554] [2022-12-14 11:55:23,993 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-14 11:55:23,993 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1305440573] [2022-12-14 11:55:23,994 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1305440573] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:55:23,994 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 11:55:23,994 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 11:55:23,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182254885] [2022-12-14 11:55:23,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:55:23,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 11:55:23,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:55:23,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 11:55:23,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-14 11:55:23,995 INFO L87 Difference]: Start difference. First operand 115 states and 152 transitions. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:55:24,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:55:24,039 INFO L93 Difference]: Finished difference Result 213 states and 280 transitions. [2022-12-14 11:55:24,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 11:55:24,039 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-12-14 11:55:24,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:55:24,040 INFO L225 Difference]: With dead ends: 213 [2022-12-14 11:55:24,040 INFO L226 Difference]: Without dead ends: 115 [2022-12-14 11:55:24,041 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-14 11:55:24,042 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 33 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 11:55:24,042 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 22 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 11:55:24,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2022-12-14 11:55:24,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 115. [2022-12-14 11:55:24,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 109 states have (on average 1.3394495412844036) internal successors, (146), 114 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:55:24,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 146 transitions. [2022-12-14 11:55:24,053 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 146 transitions. Word has length 9 [2022-12-14 11:55:24,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:55:24,053 INFO L495 AbstractCegarLoop]: Abstraction has 115 states and 146 transitions. [2022-12-14 11:55:24,053 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:55:24,053 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 146 transitions. [2022-12-14 11:55:24,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-12-14 11:55:24,054 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:55:24,054 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1] [2022-12-14 11:55:24,059 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_960947e5-0355-4cdc-82b9-96fba19b8ae1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-12-14 11:55:24,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_960947e5-0355-4cdc-82b9-96fba19b8ae1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:55:24,255 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-12-14 11:55:24,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:55:24,255 INFO L85 PathProgramCache]: Analyzing trace with hash 1168356120, now seen corresponding path program 1 times [2022-12-14 11:55:24,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:55:24,256 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [914053165] [2022-12-14 11:55:24,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:55:24,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:55:24,260 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-14 11:55:24,260 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [58783927] [2022-12-14 11:55:24,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:55:24,261 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:55:24,261 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_960947e5-0355-4cdc-82b9-96fba19b8ae1/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 11:55:24,262 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_960947e5-0355-4cdc-82b9-96fba19b8ae1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 11:55:24,263 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_960947e5-0355-4cdc-82b9-96fba19b8ae1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-14 11:55:24,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:55:24,306 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 11:55:24,307 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:55:24,342 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-14 11:55:24,342 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 11:55:24,369 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-14 11:55:24,369 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:55:24,369 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [914053165] [2022-12-14 11:55:24,369 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-14 11:55:24,369 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [58783927] [2022-12-14 11:55:24,369 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [58783927] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 11:55:24,370 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [494105910] [2022-12-14 11:55:24,372 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2022-12-14 11:55:24,372 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 11:55:24,373 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 11:55:24,373 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 11:55:24,373 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 11:55:24,394 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:55:24,412 INFO L321 Elim1Store]: treesize reduction 32, result has 37.3 percent of original size [2022-12-14 11:55:24,412 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 44 [2022-12-14 11:55:24,424 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:55:24,444 INFO L321 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2022-12-14 11:55:24,444 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 8 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 32 treesize of output 49 [2022-12-14 11:55:24,475 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:55:24,476 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 37 [2022-12-14 11:55:24,506 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:55:24,507 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:55:24,508 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 58 [2022-12-14 11:55:24,577 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:55:24,579 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:55:24,581 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:55:24,584 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:55:24,586 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:55:24,592 INFO L321 Elim1Store]: treesize reduction 39, result has 2.5 percent of original size [2022-12-14 11:55:24,592 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 338 treesize of output 286 [2022-12-14 11:55:24,660 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2022-12-14 11:55:24,761 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2022-12-14 11:55:24,774 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 42 [2022-12-14 11:55:24,808 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 180 treesize of output 126 [2022-12-14 11:55:24,861 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2022-12-14 11:55:24,905 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2022-12-14 11:55:24,925 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 42 [2022-12-14 11:55:24,953 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2022-12-14 11:55:25,017 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2022-12-14 11:55:25,055 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 42 [2022-12-14 11:55:25,093 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2022-12-14 11:55:25,131 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2022-12-14 11:55:25,139 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 11:55:25,369 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1486#(and (= |ULTIMATE.start_main_~m~0#1| 1000) (<= 1500 |ULTIMATE.start_main_~j~0#1|) (<= 0 |ULTIMATE.start_main_~#A~0#1.base|) (= |ULTIMATE.start_main_~#A~0#1.offset| 0) (<= |ULTIMATE.start_main_~j~0#1| 2147483647) (< 2147483646 |ULTIMATE.start_main_~i~0#1|) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |ULTIMATE.start_main_~n~0#1| 1500) (= |#NULL.base| 0))' at error location [2022-12-14 11:55:25,369 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 11:55:25,369 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-14 11:55:25,369 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2022-12-14 11:55:25,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962771562] [2022-12-14 11:55:25,370 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-14 11:55:25,370 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-14 11:55:25,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:55:25,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-14 11:55:25,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2022-12-14 11:55:25,370 INFO L87 Difference]: Start difference. First operand 115 states and 146 transitions. Second operand has 8 states, 8 states have (on average 2.5) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:55:25,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:55:25,445 INFO L93 Difference]: Finished difference Result 213 states and 269 transitions. [2022-12-14 11:55:25,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-14 11:55:25,446 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.5) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-12-14 11:55:25,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:55:25,446 INFO L225 Difference]: With dead ends: 213 [2022-12-14 11:55:25,446 INFO L226 Difference]: Without dead ends: 115 [2022-12-14 11:55:25,447 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=70, Invalid=170, Unknown=0, NotChecked=0, Total=240 [2022-12-14 11:55:25,447 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 66 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 11:55:25,447 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 37 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 11:55:25,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2022-12-14 11:55:25,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 115. [2022-12-14 11:55:25,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 109 states have (on average 1.1743119266055047) internal successors, (128), 114 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:55:25,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 128 transitions. [2022-12-14 11:55:25,453 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 128 transitions. Word has length 15 [2022-12-14 11:55:25,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:55:25,453 INFO L495 AbstractCegarLoop]: Abstraction has 115 states and 128 transitions. [2022-12-14 11:55:25,453 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.5) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:55:25,453 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 128 transitions. [2022-12-14 11:55:25,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-12-14 11:55:25,454 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:55:25,454 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 1, 1, 1] [2022-12-14 11:55:25,459 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_960947e5-0355-4cdc-82b9-96fba19b8ae1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-12-14 11:55:25,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_960947e5-0355-4cdc-82b9-96fba19b8ae1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-12-14 11:55:25,657 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-12-14 11:55:25,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:55:25,658 INFO L85 PathProgramCache]: Analyzing trace with hash -1722051453, now seen corresponding path program 2 times [2022-12-14 11:55:25,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:55:25,659 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917991166] [2022-12-14 11:55:25,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:55:25,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:55:25,677 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-14 11:55:25,678 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1267076239] [2022-12-14 11:55:25,678 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 11:55:25,679 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:55:25,679 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_960947e5-0355-4cdc-82b9-96fba19b8ae1/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 11:55:25,682 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_960947e5-0355-4cdc-82b9-96fba19b8ae1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 11:55:25,685 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_960947e5-0355-4cdc-82b9-96fba19b8ae1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-12-14 11:55:25,812 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-12-14 11:55:25,812 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 11:55:25,813 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 11:55:25,815 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:55:25,844 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-12-14 11:55:25,844 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 11:55:25,869 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-12-14 11:55:25,869 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:55:25,869 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917991166] [2022-12-14 11:55:25,869 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-14 11:55:25,869 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1267076239] [2022-12-14 11:55:25,869 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1267076239] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 11:55:25,870 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1218284265] [2022-12-14 11:55:25,872 INFO L159 IcfgInterpreter]: Started Sifa with 6 locations of interest [2022-12-14 11:55:25,872 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 11:55:25,872 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 11:55:25,872 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 11:55:25,872 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 11:55:25,884 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:55:25,907 INFO L321 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2022-12-14 11:55:25,908 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 8 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 32 treesize of output 49 [2022-12-14 11:55:25,919 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:55:25,920 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 36 [2022-12-14 11:55:25,940 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:55:25,940 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 37 [2022-12-14 11:55:25,965 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:55:25,967 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 71 treesize of output 62 [2022-12-14 11:55:26,029 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:55:26,030 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:55:26,034 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:55:26,035 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:55:26,040 INFO L321 Elim1Store]: treesize reduction 42, result has 2.3 percent of original size [2022-12-14 11:55:26,041 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 8 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 346 treesize of output 290 [2022-12-14 11:55:26,098 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2022-12-14 11:55:26,115 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2022-12-14 11:55:26,122 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 11:55:26,819 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2028#(and (< 2147483646 |ULTIMATE.start_main_~j~0#1|) (= |ULTIMATE.start_main_~i~0#1| 0) (= |ULTIMATE.start_main_~m~0#1| 1000) (<= 0 |ULTIMATE.start_main_~#A~0#1.base|) (= |ULTIMATE.start_main_~#A~0#1.offset| 0) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |ULTIMATE.start_main_~n~0#1| 1500) (= |#NULL.base| 0))' at error location [2022-12-14 11:55:26,820 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 11:55:26,820 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-14 11:55:26,820 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 4 [2022-12-14 11:55:26,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840430121] [2022-12-14 11:55:26,820 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-14 11:55:26,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-14 11:55:26,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:55:26,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-14 11:55:26,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2022-12-14 11:55:26,821 INFO L87 Difference]: Start difference. First operand 115 states and 128 transitions. Second operand has 6 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:55:26,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:55:26,868 INFO L93 Difference]: Finished difference Result 115 states and 128 transitions. [2022-12-14 11:55:26,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 11:55:26,869 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-12-14 11:55:26,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:55:26,869 INFO L225 Difference]: With dead ends: 115 [2022-12-14 11:55:26,869 INFO L226 Difference]: Without dead ends: 112 [2022-12-14 11:55:26,870 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=57, Invalid=99, Unknown=0, NotChecked=0, Total=156 [2022-12-14 11:55:26,870 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 44 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 11:55:26,871 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 19 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 11:55:26,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2022-12-14 11:55:26,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 100. [2022-12-14 11:55:26,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 97 states have (on average 1.134020618556701) internal successors, (110), 99 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:55:26,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 110 transitions. [2022-12-14 11:55:26,876 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 110 transitions. Word has length 17 [2022-12-14 11:55:26,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:55:26,876 INFO L495 AbstractCegarLoop]: Abstraction has 100 states and 110 transitions. [2022-12-14 11:55:26,876 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:55:26,876 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 110 transitions. [2022-12-14 11:55:26,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-12-14 11:55:26,877 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:55:26,877 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 2, 2, 2, 1, 1, 1] [2022-12-14 11:55:26,881 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_960947e5-0355-4cdc-82b9-96fba19b8ae1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-12-14 11:55:27,077 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_960947e5-0355-4cdc-82b9-96fba19b8ae1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-12-14 11:55:27,078 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-12-14 11:55:27,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:55:27,079 INFO L85 PathProgramCache]: Analyzing trace with hash -1420964460, now seen corresponding path program 2 times [2022-12-14 11:55:27,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:55:27,079 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656062087] [2022-12-14 11:55:27,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:55:27,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:55:27,098 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-14 11:55:27,099 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [119480782] [2022-12-14 11:55:27,099 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 11:55:27,099 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:55:27,100 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_960947e5-0355-4cdc-82b9-96fba19b8ae1/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 11:55:27,102 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_960947e5-0355-4cdc-82b9-96fba19b8ae1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 11:55:27,105 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_960947e5-0355-4cdc-82b9-96fba19b8ae1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-12-14 11:55:27,141 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-12-14 11:55:27,142 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 11:55:27,142 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 11:55:27,144 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:55:27,173 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-12-14 11:55:27,173 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 11:55:27,205 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-12-14 11:55:27,205 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:55:27,205 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1656062087] [2022-12-14 11:55:27,205 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-14 11:55:27,205 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [119480782] [2022-12-14 11:55:27,205 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [119480782] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 11:55:27,205 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1887729236] [2022-12-14 11:55:27,207 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2022-12-14 11:55:27,207 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 11:55:27,207 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 11:55:27,207 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 11:55:27,208 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 11:55:27,220 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:55:27,234 INFO L321 Elim1Store]: treesize reduction 32, result has 37.3 percent of original size [2022-12-14 11:55:27,234 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 44 [2022-12-14 11:55:27,243 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:55:27,260 INFO L321 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2022-12-14 11:55:27,261 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 8 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 32 treesize of output 49 [2022-12-14 11:55:27,278 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:55:27,279 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 37 [2022-12-14 11:55:27,300 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:55:27,301 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 71 treesize of output 62 [2022-12-14 11:55:27,357 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:55:27,359 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:55:27,364 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:55:27,365 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:55:27,370 INFO L321 Elim1Store]: treesize reduction 42, result has 2.3 percent of original size [2022-12-14 11:55:27,371 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 8 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 346 treesize of output 290 [2022-12-14 11:55:27,418 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2022-12-14 11:55:27,490 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2022-12-14 11:55:27,500 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:55:27,501 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 38 [2022-12-14 11:55:27,526 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:55:27,529 INFO L321 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2022-12-14 11:55:27,530 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 172 treesize of output 122 [2022-12-14 11:55:27,561 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2022-12-14 11:55:27,602 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2022-12-14 11:55:27,622 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 42 [2022-12-14 11:55:27,643 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2022-12-14 11:55:27,706 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2022-12-14 11:55:27,733 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:55:27,733 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 38 [2022-12-14 11:55:27,756 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2022-12-14 11:55:27,789 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2022-12-14 11:55:27,809 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 11:55:28,010 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2522#(and (= |ULTIMATE.start_main_~m~0#1| 1000) (<= 1500 |ULTIMATE.start_main_~j~0#1|) (<= 0 |ULTIMATE.start_main_~#A~0#1.base|) (= |ULTIMATE.start_main_~#A~0#1.offset| 0) (<= |ULTIMATE.start_main_~j~0#1| 2147483647) (< 2147483646 |ULTIMATE.start_main_~i~0#1|) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |ULTIMATE.start_main_~n~0#1| 1500) (= |#NULL.base| 0))' at error location [2022-12-14 11:55:28,010 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 11:55:28,010 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-14 11:55:28,010 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 4 [2022-12-14 11:55:28,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363710328] [2022-12-14 11:55:28,010 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-14 11:55:28,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-14 11:55:28,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:55:28,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-14 11:55:28,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2022-12-14 11:55:28,011 INFO L87 Difference]: Start difference. First operand 100 states and 110 transitions. Second operand has 6 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:55:28,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:55:28,074 INFO L93 Difference]: Finished difference Result 134 states and 147 transitions. [2022-12-14 11:55:28,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 11:55:28,074 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2022-12-14 11:55:28,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:55:28,075 INFO L225 Difference]: With dead ends: 134 [2022-12-14 11:55:28,075 INFO L226 Difference]: Without dead ends: 131 [2022-12-14 11:55:28,076 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2022-12-14 11:55:28,076 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 134 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 11:55:28,077 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [134 Valid, 16 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 11:55:28,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2022-12-14 11:55:28,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 115. [2022-12-14 11:55:28,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 113 states have (on average 1.1150442477876106) internal successors, (126), 114 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:55:28,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 126 transitions. [2022-12-14 11:55:28,083 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 126 transitions. Word has length 33 [2022-12-14 11:55:28,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:55:28,084 INFO L495 AbstractCegarLoop]: Abstraction has 115 states and 126 transitions. [2022-12-14 11:55:28,084 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:55:28,084 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 126 transitions. [2022-12-14 11:55:28,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-12-14 11:55:28,084 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:55:28,084 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 3, 3, 3, 2, 1, 1, 1] [2022-12-14 11:55:28,088 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_960947e5-0355-4cdc-82b9-96fba19b8ae1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-12-14 11:55:28,285 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_960947e5-0355-4cdc-82b9-96fba19b8ae1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:55:28,286 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-12-14 11:55:28,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:55:28,288 INFO L85 PathProgramCache]: Analyzing trace with hash 1547489948, now seen corresponding path program 1 times [2022-12-14 11:55:28,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:55:28,288 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1780394068] [2022-12-14 11:55:28,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:55:28,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:55:28,296 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-14 11:55:28,296 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1992716489] [2022-12-14 11:55:28,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:55:28,296 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:55:28,296 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_960947e5-0355-4cdc-82b9-96fba19b8ae1/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 11:55:28,297 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_960947e5-0355-4cdc-82b9-96fba19b8ae1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 11:55:28,299 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_960947e5-0355-4cdc-82b9-96fba19b8ae1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-12-14 11:55:28,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:55:28,350 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 11:55:28,352 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:55:28,360 INFO L134 CoverageAnalysis]: Checked inductivity of 246 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 246 trivial. 0 not checked. [2022-12-14 11:55:28,360 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 11:55:28,360 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:55:28,360 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1780394068] [2022-12-14 11:55:28,360 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-14 11:55:28,360 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1992716489] [2022-12-14 11:55:28,360 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1992716489] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:55:28,360 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 11:55:28,360 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 11:55:28,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553349703] [2022-12-14 11:55:28,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:55:28,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 11:55:28,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:55:28,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 11:55:28,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 11:55:28,362 INFO L87 Difference]: Start difference. First operand 115 states and 126 transitions. Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:55:28,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:55:28,392 INFO L93 Difference]: Finished difference Result 229 states and 251 transitions. [2022-12-14 11:55:28,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 11:55:28,393 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2022-12-14 11:55:28,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:55:28,394 INFO L225 Difference]: With dead ends: 229 [2022-12-14 11:55:28,394 INFO L226 Difference]: Without dead ends: 131 [2022-12-14 11:55:28,394 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 11:55:28,395 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 6 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 20 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 [2022-12-14 11:55:28,395 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 20 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 11:55:28,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2022-12-14 11:55:28,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 116. [2022-12-14 11:55:28,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 114 states have (on average 1.1140350877192982) internal successors, (127), 115 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:55:28,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 127 transitions. [2022-12-14 11:55:28,402 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 127 transitions. Word has length 50 [2022-12-14 11:55:28,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:55:28,402 INFO L495 AbstractCegarLoop]: Abstraction has 116 states and 127 transitions. [2022-12-14 11:55:28,403 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:55:28,403 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 127 transitions. [2022-12-14 11:55:28,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-12-14 11:55:28,403 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:55:28,404 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 4, 4, 4, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:55:28,408 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_960947e5-0355-4cdc-82b9-96fba19b8ae1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2022-12-14 11:55:28,604 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_960947e5-0355-4cdc-82b9-96fba19b8ae1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-12-14 11:55:28,606 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-12-14 11:55:28,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:55:28,607 INFO L85 PathProgramCache]: Analyzing trace with hash 1042272734, now seen corresponding path program 1 times [2022-12-14 11:55:28,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:55:28,607 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874537119] [2022-12-14 11:55:28,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:55:28,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:55:28,617 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-14 11:55:28,617 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [16402717] [2022-12-14 11:55:28,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:55:28,618 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:55:28,618 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_960947e5-0355-4cdc-82b9-96fba19b8ae1/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 11:55:28,619 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_960947e5-0355-4cdc-82b9-96fba19b8ae1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 11:55:28,624 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_960947e5-0355-4cdc-82b9-96fba19b8ae1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-12-14 11:55:28,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:55:28,682 INFO L263 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-14 11:55:28,683 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:55:28,747 INFO L134 CoverageAnalysis]: Checked inductivity of 269 backedges. 1 proven. 22 refuted. 0 times theorem prover too weak. 246 trivial. 0 not checked. [2022-12-14 11:55:28,747 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 11:55:28,798 INFO L134 CoverageAnalysis]: Checked inductivity of 269 backedges. 1 proven. 22 refuted. 0 times theorem prover too weak. 246 trivial. 0 not checked. [2022-12-14 11:55:28,799 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:55:28,799 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1874537119] [2022-12-14 11:55:28,799 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-14 11:55:28,799 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [16402717] [2022-12-14 11:55:28,799 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [16402717] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 11:55:28,799 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [625203323] [2022-12-14 11:55:28,801 INFO L159 IcfgInterpreter]: Started Sifa with 14 locations of interest [2022-12-14 11:55:28,801 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 11:55:28,801 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 11:55:28,801 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 11:55:28,802 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 11:55:28,812 FATAL L? ?]: Ignoring exception! java.lang.IllegalStateException: "Dag" had a cycle: 0 ε 1 ※49 $Ultimate##0 2 ∅ 3 assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(10, 2);call #Ultimate.allocInit(12, 3);assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~mem5#1, main_#t~mem6#1, main_#t~mem7#1, main_#t~mem8#1, main_~i~0#1, main_~j~0#1, main_~m~0#1, main_~n~0#1, main_~#A~0#1.base, main_~#A~0#1.offset, main_~max~0#1;havoc main_~i~0#1;havoc main_~j~0#1;main_~m~0#1 := 1000;main_~n~0#1 := 1500;call main_~#A~0#1.base, main_~#A~0#1.offset := #Ultimate.allocOnStack(4 * main_~n~0#1 * main_~n~0#1 % 4294967296);havoc main_~max~0#1;main_~i~0#1 := 0;main_~j~0#1 := 0; 4 ε 5 ※52 null 6 assume !!(main_~i~0#1 < main_~m~0#1);main_~j~0#1 := 0; 7 ※39 L24-2 8 BeginParallelComposition{ParallelCodeBlock0: assume !(main_~i~0#1 < main_~m~0#1);ParallelCodeBlock1: assume !true;}EndParallelCompositionmain_~i~0#1 := 0;main_~j~0#1 := 0;call main_#t~mem5#1 := read~int(main_~#A~0#1.base, main_~#A~0#1.offset, 4);main_~max~0#1 := main_#t~mem5#1;havoc main_#t~mem5#1; 9 ※38 ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW 10 ※40 L44 11 ※41 L29 12 ※42 L29-1 13 ※43 L31 14 ※44 L38-2 15 ※45 L40-3 16 ※46 L40-2 17 ※47 L26-2 18 ※48 L46 19 ※50 L26-3 20 ※51 L41-2 21 [((assume !!(main_~j~0#1 < main_~n~0#1);assume -2147483648 <= main_#t~nondet4#1 && main_#t~nondet4#1 <= 2147483647;call write~int(main_#t~nondet4#1, main_~#A~0#1.base, main_~#A~0#1.offset + main_~i~0#1 * (4 * main_~n~0#1) + 4 * main_~j~0#1, 4);havoc main_#t~nondet4#1;·assume 1 + main_~j~0#1 >= -2147483648;)·assume 1 + main_~j~0#1 <= 2147483647;main_~j~0#1 := 1 + main_~j~0#1;)]* 22 assume 1 + main_~i~0#1 <= 2147483647;main_~i~0#1 := 1 + main_~i~0#1; 23 assume !!(main_~i~0#1 < main_~n~0#1);main_~j~0#1 := 0; 24 assume !(1 + main_~i~0#1 <= 2147483647); 25 assume 1 + main_~j~0#1 >= -2147483648; 26 assume !!(main_~j~0#1 < main_~n~0#1);assume -2147483648 <= main_#t~nondet4#1 && main_#t~nondet4#1 <= 2147483647;call write~int(main_#t~nondet4#1, main_~#A~0#1.base, main_~#A~0#1.offset + main_~i~0#1 * (4 * main_~n~0#1) + 4 * main_~j~0#1, 4);havoc main_#t~nondet4#1; 27 assume 1 + main_~j~0#1 >= -2147483648; 28 assume 1 + main_~i~0#1 >= -2147483648; 29 assume 1 + main_~i~0#1 <= 2147483647;main_~i~0#1 := 1 + main_~i~0#1; 30 BeginParallelComposition{ParallelCodeBlock0: assume !(main_~j~0#1 < main_~n~0#1);ParallelCodeBlock1: assume !true;}EndParallelComposition 31 assume 1 + main_~j~0#1 <= 2147483647;main_~j~0#1 := 1 + main_~j~0#1; 32 assume !!(main_~i~0#1 < main_~n~0#1);main_~j~0#1 := 0; 33 [((assume !!(main_~j~0#1 < main_~n~0#1);assume -2147483648 <= main_#t~nondet4#1 && main_#t~nondet4#1 <= 2147483647;call write~int(main_#t~nondet4#1, main_~#A~0#1.base, main_~#A~0#1.offset + main_~i~0#1 * (4 * main_~n~0#1) + 4 * main_~j~0#1, 4);havoc main_#t~nondet4#1;·assume 1 + main_~j~0#1 >= -2147483648;)·assume 1 + main_~j~0#1 <= 2147483647;main_~j~0#1 := 1 + main_~j~0#1;)]* 34 [((assume 1 + main_~i~0#1 <= 2147483647;main_~i~0#1 := 1 + main_~i~0#1;·assume !!(main_~i~0#1 < main_~n~0#1);main_~j~0#1 := 0;)·(BeginParallelComposition{ParallelCodeBlock0: assume !(main_~j~0#1 < main_~n~0#1);ParallelCodeBlock1: assume !true;}EndParallelComposition·assume 1 + main_~i~0#1 >= -2147483648;))]* 35 [((assume 1 + main_~i~0#1 <= 2147483647;main_~i~0#1 := 1 + main_~i~0#1;·assume !!(main_~i~0#1 < main_~n~0#1);main_~j~0#1 := 0;)·(BeginParallelComposition{ParallelCodeBlock0: assume !(main_~j~0#1 < main_~n~0#1);ParallelCodeBlock1: assume !true;}EndParallelComposition·assume 1 + main_~i~0#1 >= -2147483648;))]* 36 [(((assume 1 + main_~i~0#1 >= -2147483648;·(assume 1 + main_~i~0#1 <= 2147483647;main_~i~0#1 := 1 + main_~i~0#1;·assume !!(main_~i~0#1 < main_~m~0#1);main_~j~0#1 := 0;))·[((assume !!(main_~j~0#1 < main_~n~0#1);assume -2147483648 <= main_#t~nondet4#1 && main_#t~nondet4#1 <= 2147483647;call write~int(main_#t~nondet4#1, main_~#A~0#1.base, main_~#A~0#1.offset + main_~i~0#1 * (4 * main_~n~0#1) + 4 * main_~j~0#1, 4);havoc main_#t~nondet4#1;·assume 1 + main_~j~0#1 >= -2147483648;)·assume 1 + main_~j~0#1 <= 2147483647;main_~j~0#1 := 1 + main_~j~0#1;)]* )·BeginParallelComposition{ParallelCodeBlock0: assume !(main_~j~0#1 < main_~n~0#1);ParallelCodeBlock1: assume !true;}EndParallelComposition)]* 37 [{((assume 1 + main_~j~0#1 >= -2147483648;·assume 1 + main_~j~0#1 <= 2147483647;main_~j~0#1 := 1 + main_~j~0#1;)·assume !!(main_~j~0#1 < main_~n~0#1);call main_#t~mem6#1 := read~int(main_~#A~0#1.base, main_~#A~0#1.offset + main_~i~0#1 * (4 * main_~n~0#1) + 4 * main_~j~0#1, 4);BeginParallelComposition{ParallelCodeBlock0: assume main_#t~mem6#1 > main_~max~0#1;havoc main_#t~mem6#1;call main_#t~mem7#1 := read~int(main_~#A~0#1.base, main_~#A~0#1.offset + main_~i~0#1 * (4 * main_~n~0#1) + 4 * main_~j~0#1, 4);main_~max~0#1 := main_#t~mem7#1;havoc main_#t~mem7#1;ParallelCodeBlock1: assume !(main_#t~mem6#1 > main_~max~0#1);havoc main_#t~mem6#1;}EndParallelComposition) ∪ ((((assume 1 + main_~j~0#1 >= -2147483648;·assume 1 + main_~j~0#1 <= 2147483647;main_~j~0#1 := 1 + main_~j~0#1;)·(BeginParallelComposition{ParallelCodeBlock0: assume !(main_~j~0#1 < main_~n~0#1);ParallelCodeBlock1: assume !true;}EndParallelComposition·assume 1 + main_~i~0#1 >= -2147483648;))·[((assume 1 + main_~i~0#1 <= 2147483647;main_~i~0#1 := 1 + main_~i~0#1;·assume !!(main_~i~0#1 < main_~n~0#1);main_~j~0#1 := 0;)·(BeginParallelComposition{ParallelCodeBlock0: assume !(main_~j~0#1 < main_~n~0#1);ParallelCodeBlock1: assume !true;}EndParallelComposition·assume 1 + main_~i~0#1 >= -2147483648;))]* )·((assume 1 + main_~i~0#1 <= 2147483647;main_~i~0#1 := 1 + main_~i~0#1;·assume !!(main_~i~0#1 < main_~n~0#1);main_~j~0#1 := 0;)·assume !!(main_~j~0#1 < main_~n~0#1);call main_#t~mem6#1 := read~int(main_~#A~0#1.base, main_~#A~0#1.offset + main_~i~0#1 * (4 * main_~n~0#1) + 4 * main_~j~0#1, 4);BeginParallelComposition{ParallelCodeBlock0: assume main_#t~mem6#1 > main_~max~0#1;havoc main_#t~mem6#1;call main_#t~mem7#1 := read~int(main_~#A~0#1.base, main_~#A~0#1.offset + main_~i~0#1 * (4 * main_~n~0#1) + 4 * main_~j~0#1, 4);main_~max~0#1 := main_#t~mem7#1;havoc main_#t~mem7#1;ParallelCodeBlock1: assume !(main_#t~mem6#1 > main_~max~0#1);havoc main_#t~mem6#1;}EndParallelComposition))}]* 38 BeginParallelComposition{ParallelCodeBlock0: assume !(main_~j~0#1 < main_~n~0#1);ParallelCodeBlock1: assume !true;}EndParallelComposition 39 assume !!(main_~i~0#1 < main_~m~0#1);main_~j~0#1 := 0; 40 assume !!(main_~j~0#1 < main_~n~0#1);call main_#t~mem6#1 := read~int(main_~#A~0#1.base, main_~#A~0#1.offset + main_~i~0#1 * (4 * main_~n~0#1) + 4 * main_~j~0#1, 4);BeginParallelComposition{ParallelCodeBlock0: assume main_#t~mem6#1 > main_~max~0#1;havoc main_#t~mem6#1;call main_#t~mem7#1 := read~int(main_~#A~0#1.base, main_~#A~0#1.offset + main_~i~0#1 * (4 * main_~n~0#1) + 4 * main_~j~0#1, 4);main_~max~0#1 := main_#t~mem7#1;havoc main_#t~mem7#1;ParallelCodeBlock1: assume !(main_#t~mem6#1 > main_~max~0#1);havoc main_#t~mem6#1;}EndParallelComposition 41 BeginParallelComposition{ParallelCodeBlock0: assume !(main_~j~0#1 < main_~n~0#1);ParallelCodeBlock1: assume !true;}EndParallelComposition 42 BeginParallelComposition{ParallelCodeBlock0: assume !(main_~j~0#1 < main_~n~0#1);ParallelCodeBlock1: assume !true;}EndParallelComposition 43 BeginParallelComposition{ParallelCodeBlock0: assume !(main_~i~0#1 < main_~m~0#1);ParallelCodeBlock1: assume !true;}EndParallelCompositionmain_~i~0#1 := 0;main_~j~0#1 := 0;call main_#t~mem5#1 := read~int(main_~#A~0#1.base, main_~#A~0#1.offset, 4);main_~max~0#1 := main_#t~mem5#1;havoc main_#t~mem5#1; 44 assume 1 + main_~i~0#1 >= -2147483648; 45 assume 1 + main_~i~0#1 >= -2147483648; 46 assume 1 + main_~i~0#1 <= 2147483647;main_~i~0#1 := 1 + main_~i~0#1; 47 assume !!(main_~i~0#1 < main_~n~0#1);main_~j~0#1 := 0; # 0 1 forward 0 2 forward 0 3 forward 1 0 backward 1 4 forward 2 0 backward 2 5 forward 3 0 backward 3 6 forward 3 7 forward 3 8 forward 4 9 backward 4 7 backward 4 10 backward 4 11 backward 4 12 backward 4 13 backward 4 14 backward 4 15 backward 4 16 backward 4 17 backward 4 18 backward 4 1 backward 4 19 backward 4 20 backward 4 5 backward 5 2 backward 5 4 forward 6 3 backward 6 21 forward 7 3 backward 7 22 backward 7 4 forward 8 3 backward 8 22 backward 8 14 forward 8 23 forward 9 24 backward 9 4 forward 10 25 backward 10 4 forward 11 26 backward 11 4 forward 12 27 backward 12 4 forward 13 28 backward 13 4 forward 14 29 backward 14 8 backward 14 4 forward 15 30 backward 15 4 forward 16 31 backward 16 31 backward 16 23 backward 16 31 backward 16 31 backward 16 23 backward 16 32 backward 16 4 forward 17 21 backward 17 33 backward 17 4 forward 18 34 backward 18 35 backward 18 4 forward 19 36 backward 19 4 forward 20 37 backward 20 4 forward 21 6 backward 21 38 forward 21 17 forward 21 26 forward 22 28 backward 22 7 forward 22 39 forward 22 8 forward 23 8 backward 23 30 forward 23 16 forward 23 40 forward 23 41 forward 23 30 forward 23 16 forward 24 34 backward 24 35 backward 24 9 forward 25 37 backward 25 10 forward 25 31 forward 26 21 backward 26 33 backward 26 11 forward 26 27 forward 27 26 backward 27 12 forward 28 36 backward 28 13 forward 28 22 forward 29 34 backward 29 35 backward 29 14 forward 29 32 forward 30 31 backward 30 31 backward 30 23 backward 30 31 backward 30 31 backward 30 23 backward 30 32 backward 30 32 backward 30 15 forward 31 25 backward 31 42 forward 31 30 forward 31 16 forward 31 30 forward 31 16 forward 31 30 forward 31 16 forward 31 30 forward 31 16 forward 32 29 backward 32 43 backward 32 30 forward 32 30 forward 32 16 forward 32 40 forward 32 41 forward 33 39 backward 33 17 forward 33 26 forward 34 44 backward 34 24 forward 34 18 forward 34 29 forward 35 45 backward 35 24 forward 35 18 forward 35 29 forward 35 46 forward 36 38 backward 36 19 forward 36 28 forward 37 40 backward 37 20 forward 37 25 forward 38 21 backward 38 36 forward 39 22 backward 39 33 forward 40 47 backward 40 23 backward 40 32 backward 40 37 forward 41 23 backward 41 32 backward 41 45 forward 42 31 backward 42 44 forward 43 22 backward 43 14 forward 43 23 forward 43 32 forward 44 42 backward 44 34 forward 45 41 backward 45 35 forward 46 35 backward 46 47 forward 47 46 backward 47 40 forward at de.uni_freiburg.informatik.ultimate.lib.sifa.TopsortCache.lambda$2(TopsortCache.java:53) at java.base/java.util.Optional.orElseThrow(Optional.java:408) at de.uni_freiburg.informatik.ultimate.lib.sifa.TopsortCache.compute(TopsortCache.java:53) at java.base/java.util.Map.computeIfAbsent(Map.java:1003) at de.uni_freiburg.informatik.ultimate.lib.sifa.TopsortCache.topsort(TopsortCache.java:46) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:113) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpretLoisInProcedure(IcfgInterpreter.java:136) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpret(IcfgInterpreter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:102) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:262) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-12-14 11:55:28,817 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-14 11:55:28,817 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2022-12-14 11:55:28,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867935893] [2022-12-14 11:55:28,818 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-14 11:55:28,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-12-14 11:55:28,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:55:28,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-12-14 11:55:28,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2022-12-14 11:55:28,819 INFO L87 Difference]: Start difference. First operand 116 states and 127 transitions. Second operand has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 13 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:55:28,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:55:28,996 INFO L93 Difference]: Finished difference Result 356 states and 420 transitions. [2022-12-14 11:55:28,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-12-14 11:55:28,997 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 13 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2022-12-14 11:55:28,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:55:28,998 INFO L225 Difference]: With dead ends: 356 [2022-12-14 11:55:28,998 INFO L226 Difference]: Without dead ends: 242 [2022-12-14 11:55:28,998 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=151, Invalid=191, Unknown=0, NotChecked=0, Total=342 [2022-12-14 11:55:28,999 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 241 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 241 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 11:55:28,999 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [241 Valid, 49 Invalid, 184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 11:55:28,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2022-12-14 11:55:29,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 242. [2022-12-14 11:55:29,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 242 states, 240 states have (on average 1.0541666666666667) internal successors, (253), 241 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:55:29,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 253 transitions. [2022-12-14 11:55:29,008 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 253 transitions. Word has length 66 [2022-12-14 11:55:29,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:55:29,008 INFO L495 AbstractCegarLoop]: Abstraction has 242 states and 253 transitions. [2022-12-14 11:55:29,008 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 13 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:55:29,008 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 253 transitions. [2022-12-14 11:55:29,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2022-12-14 11:55:29,010 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:55:29,011 INFO L195 NwaCegarLoop]: trace histogram [30, 30, 30, 10, 10, 10, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:55:29,016 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_960947e5-0355-4cdc-82b9-96fba19b8ae1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-12-14 11:55:29,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_960947e5-0355-4cdc-82b9-96fba19b8ae1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-12-14 11:55:29,213 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-12-14 11:55:29,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:55:29,214 INFO L85 PathProgramCache]: Analyzing trace with hash 2048566238, now seen corresponding path program 2 times [2022-12-14 11:55:29,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:55:29,216 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1859418750] [2022-12-14 11:55:29,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:55:29,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:55:29,253 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-14 11:55:29,254 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1037828641] [2022-12-14 11:55:29,254 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 11:55:29,254 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:55:29,254 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_960947e5-0355-4cdc-82b9-96fba19b8ae1/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 11:55:29,256 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_960947e5-0355-4cdc-82b9-96fba19b8ae1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 11:55:29,257 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_960947e5-0355-4cdc-82b9-96fba19b8ae1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-12-14 11:55:29,305 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-12-14 11:55:29,305 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 11:55:29,305 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 11:55:29,308 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:55:29,401 INFO L134 CoverageAnalysis]: Checked inductivity of 1553 backedges. 0 proven. 646 refuted. 0 times theorem prover too weak. 907 trivial. 0 not checked. [2022-12-14 11:55:29,401 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 11:55:29,500 INFO L134 CoverageAnalysis]: Checked inductivity of 1553 backedges. 0 proven. 646 refuted. 0 times theorem prover too weak. 907 trivial. 0 not checked. [2022-12-14 11:55:29,500 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:55:29,500 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1859418750] [2022-12-14 11:55:29,501 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-14 11:55:29,501 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1037828641] [2022-12-14 11:55:29,501 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1037828641] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 11:55:29,501 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [535445111] [2022-12-14 11:55:29,502 INFO L159 IcfgInterpreter]: Started Sifa with 14 locations of interest [2022-12-14 11:55:29,502 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 11:55:29,503 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 11:55:29,503 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 11:55:29,503 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 11:55:29,510 FATAL L? ?]: Ignoring exception! java.lang.IllegalStateException: "Dag" had a cycle: 0 ε 1 ※64 $Ultimate##0 2 ∅ 3 assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(10, 2);call #Ultimate.allocInit(12, 3);assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~mem5#1, main_#t~mem6#1, main_#t~mem7#1, main_#t~mem8#1, main_~i~0#1, main_~j~0#1, main_~m~0#1, main_~n~0#1, main_~#A~0#1.base, main_~#A~0#1.offset, main_~max~0#1;havoc main_~i~0#1;havoc main_~j~0#1;main_~m~0#1 := 1000;main_~n~0#1 := 1500;call main_~#A~0#1.base, main_~#A~0#1.offset := #Ultimate.allocOnStack(4 * main_~n~0#1 * main_~n~0#1 % 4294967296);havoc main_~max~0#1;main_~i~0#1 := 0;main_~j~0#1 := 0; 4 ε 5 ※67 null 6 assume !!(main_~i~0#1 < main_~m~0#1);main_~j~0#1 := 0; 7 ※54 L24-2 8 BeginParallelComposition{ParallelCodeBlock0: assume !(main_~i~0#1 < main_~m~0#1);ParallelCodeBlock1: assume !true;}EndParallelCompositionmain_~i~0#1 := 0;main_~j~0#1 := 0;call main_#t~mem5#1 := read~int(main_~#A~0#1.base, main_~#A~0#1.offset, 4);main_~max~0#1 := main_#t~mem5#1;havoc main_#t~mem5#1; 9 ※53 ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW 10 ※55 L44 11 ※56 L29 12 ※57 L29-1 13 ※58 L31 14 ※59 L38-2 15 ※60 L40-3 16 ※61 L40-2 17 ※62 L26-2 18 ※63 L46 19 ※65 L26-3 20 ※66 L41-2 21 [((assume !!(main_~j~0#1 < main_~n~0#1);assume -2147483648 <= main_#t~nondet4#1 && main_#t~nondet4#1 <= 2147483647;call write~int(main_#t~nondet4#1, main_~#A~0#1.base, main_~#A~0#1.offset + main_~i~0#1 * (4 * main_~n~0#1) + 4 * main_~j~0#1, 4);havoc main_#t~nondet4#1;·assume 1 + main_~j~0#1 >= -2147483648;)·assume 1 + main_~j~0#1 <= 2147483647;main_~j~0#1 := 1 + main_~j~0#1;)]* 22 assume 1 + main_~i~0#1 <= 2147483647;main_~i~0#1 := 1 + main_~i~0#1; 23 assume !!(main_~i~0#1 < main_~n~0#1);main_~j~0#1 := 0; 24 assume !(1 + main_~i~0#1 <= 2147483647); 25 assume 1 + main_~j~0#1 >= -2147483648; 26 assume !!(main_~j~0#1 < main_~n~0#1);assume -2147483648 <= main_#t~nondet4#1 && main_#t~nondet4#1 <= 2147483647;call write~int(main_#t~nondet4#1, main_~#A~0#1.base, main_~#A~0#1.offset + main_~i~0#1 * (4 * main_~n~0#1) + 4 * main_~j~0#1, 4);havoc main_#t~nondet4#1; 27 assume 1 + main_~j~0#1 >= -2147483648; 28 assume 1 + main_~i~0#1 >= -2147483648; 29 assume 1 + main_~i~0#1 <= 2147483647;main_~i~0#1 := 1 + main_~i~0#1; 30 BeginParallelComposition{ParallelCodeBlock0: assume !(main_~j~0#1 < main_~n~0#1);ParallelCodeBlock1: assume !true;}EndParallelComposition 31 assume 1 + main_~j~0#1 <= 2147483647;main_~j~0#1 := 1 + main_~j~0#1; 32 assume !!(main_~i~0#1 < main_~n~0#1);main_~j~0#1 := 0; 33 [((assume !!(main_~j~0#1 < main_~n~0#1);assume -2147483648 <= main_#t~nondet4#1 && main_#t~nondet4#1 <= 2147483647;call write~int(main_#t~nondet4#1, main_~#A~0#1.base, main_~#A~0#1.offset + main_~i~0#1 * (4 * main_~n~0#1) + 4 * main_~j~0#1, 4);havoc main_#t~nondet4#1;·assume 1 + main_~j~0#1 >= -2147483648;)·assume 1 + main_~j~0#1 <= 2147483647;main_~j~0#1 := 1 + main_~j~0#1;)]* 34 [((assume 1 + main_~i~0#1 <= 2147483647;main_~i~0#1 := 1 + main_~i~0#1;·assume !!(main_~i~0#1 < main_~n~0#1);main_~j~0#1 := 0;)·(BeginParallelComposition{ParallelCodeBlock0: assume !(main_~j~0#1 < main_~n~0#1);ParallelCodeBlock1: assume !true;}EndParallelComposition·assume 1 + main_~i~0#1 >= -2147483648;))]* 35 [((assume 1 + main_~i~0#1 <= 2147483647;main_~i~0#1 := 1 + main_~i~0#1;·assume !!(main_~i~0#1 < main_~n~0#1);main_~j~0#1 := 0;)·(BeginParallelComposition{ParallelCodeBlock0: assume !(main_~j~0#1 < main_~n~0#1);ParallelCodeBlock1: assume !true;}EndParallelComposition·assume 1 + main_~i~0#1 >= -2147483648;))]* 36 [(((assume 1 + main_~i~0#1 >= -2147483648;·(assume 1 + main_~i~0#1 <= 2147483647;main_~i~0#1 := 1 + main_~i~0#1;·assume !!(main_~i~0#1 < main_~m~0#1);main_~j~0#1 := 0;))·[((assume !!(main_~j~0#1 < main_~n~0#1);assume -2147483648 <= main_#t~nondet4#1 && main_#t~nondet4#1 <= 2147483647;call write~int(main_#t~nondet4#1, main_~#A~0#1.base, main_~#A~0#1.offset + main_~i~0#1 * (4 * main_~n~0#1) + 4 * main_~j~0#1, 4);havoc main_#t~nondet4#1;·assume 1 + main_~j~0#1 >= -2147483648;)·assume 1 + main_~j~0#1 <= 2147483647;main_~j~0#1 := 1 + main_~j~0#1;)]* )·BeginParallelComposition{ParallelCodeBlock0: assume !(main_~j~0#1 < main_~n~0#1);ParallelCodeBlock1: assume !true;}EndParallelComposition)]* 37 [{((assume 1 + main_~j~0#1 >= -2147483648;·assume 1 + main_~j~0#1 <= 2147483647;main_~j~0#1 := 1 + main_~j~0#1;)·assume !!(main_~j~0#1 < main_~n~0#1);call main_#t~mem6#1 := read~int(main_~#A~0#1.base, main_~#A~0#1.offset + main_~i~0#1 * (4 * main_~n~0#1) + 4 * main_~j~0#1, 4);BeginParallelComposition{ParallelCodeBlock0: assume main_#t~mem6#1 > main_~max~0#1;havoc main_#t~mem6#1;call main_#t~mem7#1 := read~int(main_~#A~0#1.base, main_~#A~0#1.offset + main_~i~0#1 * (4 * main_~n~0#1) + 4 * main_~j~0#1, 4);main_~max~0#1 := main_#t~mem7#1;havoc main_#t~mem7#1;ParallelCodeBlock1: assume !(main_#t~mem6#1 > main_~max~0#1);havoc main_#t~mem6#1;}EndParallelComposition) ∪ ((((assume 1 + main_~j~0#1 >= -2147483648;·assume 1 + main_~j~0#1 <= 2147483647;main_~j~0#1 := 1 + main_~j~0#1;)·(BeginParallelComposition{ParallelCodeBlock0: assume !(main_~j~0#1 < main_~n~0#1);ParallelCodeBlock1: assume !true;}EndParallelComposition·assume 1 + main_~i~0#1 >= -2147483648;))·[((assume 1 + main_~i~0#1 <= 2147483647;main_~i~0#1 := 1 + main_~i~0#1;·assume !!(main_~i~0#1 < main_~n~0#1);main_~j~0#1 := 0;)·(BeginParallelComposition{ParallelCodeBlock0: assume !(main_~j~0#1 < main_~n~0#1);ParallelCodeBlock1: assume !true;}EndParallelComposition·assume 1 + main_~i~0#1 >= -2147483648;))]* )·((assume 1 + main_~i~0#1 <= 2147483647;main_~i~0#1 := 1 + main_~i~0#1;·assume !!(main_~i~0#1 < main_~n~0#1);main_~j~0#1 := 0;)·assume !!(main_~j~0#1 < main_~n~0#1);call main_#t~mem6#1 := read~int(main_~#A~0#1.base, main_~#A~0#1.offset + main_~i~0#1 * (4 * main_~n~0#1) + 4 * main_~j~0#1, 4);BeginParallelComposition{ParallelCodeBlock0: assume main_#t~mem6#1 > main_~max~0#1;havoc main_#t~mem6#1;call main_#t~mem7#1 := read~int(main_~#A~0#1.base, main_~#A~0#1.offset + main_~i~0#1 * (4 * main_~n~0#1) + 4 * main_~j~0#1, 4);main_~max~0#1 := main_#t~mem7#1;havoc main_#t~mem7#1;ParallelCodeBlock1: assume !(main_#t~mem6#1 > main_~max~0#1);havoc main_#t~mem6#1;}EndParallelComposition))}]* 38 BeginParallelComposition{ParallelCodeBlock0: assume !(main_~j~0#1 < main_~n~0#1);ParallelCodeBlock1: assume !true;}EndParallelComposition 39 assume !!(main_~i~0#1 < main_~m~0#1);main_~j~0#1 := 0; 40 assume !!(main_~j~0#1 < main_~n~0#1);call main_#t~mem6#1 := read~int(main_~#A~0#1.base, main_~#A~0#1.offset + main_~i~0#1 * (4 * main_~n~0#1) + 4 * main_~j~0#1, 4);BeginParallelComposition{ParallelCodeBlock0: assume main_#t~mem6#1 > main_~max~0#1;havoc main_#t~mem6#1;call main_#t~mem7#1 := read~int(main_~#A~0#1.base, main_~#A~0#1.offset + main_~i~0#1 * (4 * main_~n~0#1) + 4 * main_~j~0#1, 4);main_~max~0#1 := main_#t~mem7#1;havoc main_#t~mem7#1;ParallelCodeBlock1: assume !(main_#t~mem6#1 > main_~max~0#1);havoc main_#t~mem6#1;}EndParallelComposition 41 BeginParallelComposition{ParallelCodeBlock0: assume !(main_~j~0#1 < main_~n~0#1);ParallelCodeBlock1: assume !true;}EndParallelComposition 42 BeginParallelComposition{ParallelCodeBlock0: assume !(main_~j~0#1 < main_~n~0#1);ParallelCodeBlock1: assume !true;}EndParallelComposition 43 BeginParallelComposition{ParallelCodeBlock0: assume !(main_~i~0#1 < main_~m~0#1);ParallelCodeBlock1: assume !true;}EndParallelCompositionmain_~i~0#1 := 0;main_~j~0#1 := 0;call main_#t~mem5#1 := read~int(main_~#A~0#1.base, main_~#A~0#1.offset, 4);main_~max~0#1 := main_#t~mem5#1;havoc main_#t~mem5#1; 44 assume 1 + main_~i~0#1 >= -2147483648; 45 assume 1 + main_~i~0#1 >= -2147483648; 46 assume 1 + main_~i~0#1 <= 2147483647;main_~i~0#1 := 1 + main_~i~0#1; 47 assume !!(main_~i~0#1 < main_~n~0#1);main_~j~0#1 := 0; # 0 1 forward 0 2 forward 0 3 forward 1 0 backward 1 4 forward 2 0 backward 2 5 forward 3 0 backward 3 6 forward 3 7 forward 3 8 forward 4 9 backward 4 7 backward 4 10 backward 4 11 backward 4 12 backward 4 13 backward 4 14 backward 4 15 backward 4 16 backward 4 17 backward 4 18 backward 4 1 backward 4 19 backward 4 20 backward 4 5 backward 5 2 backward 5 4 forward 6 3 backward 6 21 forward 7 3 backward 7 22 backward 7 4 forward 8 3 backward 8 22 backward 8 14 forward 8 23 forward 9 24 backward 9 4 forward 10 25 backward 10 4 forward 11 26 backward 11 4 forward 12 27 backward 12 4 forward 13 28 backward 13 4 forward 14 29 backward 14 8 backward 14 4 forward 15 30 backward 15 4 forward 16 31 backward 16 31 backward 16 23 backward 16 31 backward 16 31 backward 16 23 backward 16 32 backward 16 4 forward 17 21 backward 17 33 backward 17 4 forward 18 34 backward 18 35 backward 18 4 forward 19 36 backward 19 4 forward 20 37 backward 20 4 forward 21 6 backward 21 38 forward 21 17 forward 21 26 forward 22 28 backward 22 7 forward 22 39 forward 22 8 forward 23 8 backward 23 30 forward 23 16 forward 23 40 forward 23 41 forward 23 30 forward 23 16 forward 24 34 backward 24 35 backward 24 9 forward 25 37 backward 25 10 forward 25 31 forward 26 21 backward 26 33 backward 26 11 forward 26 27 forward 27 26 backward 27 12 forward 28 36 backward 28 13 forward 28 22 forward 29 34 backward 29 35 backward 29 14 forward 29 32 forward 30 31 backward 30 31 backward 30 23 backward 30 31 backward 30 31 backward 30 23 backward 30 32 backward 30 32 backward 30 15 forward 31 25 backward 31 42 forward 31 30 forward 31 16 forward 31 30 forward 31 16 forward 31 30 forward 31 16 forward 31 30 forward 31 16 forward 32 29 backward 32 43 backward 32 30 forward 32 30 forward 32 16 forward 32 40 forward 32 41 forward 33 39 backward 33 17 forward 33 26 forward 34 44 backward 34 24 forward 34 18 forward 34 29 forward 35 45 backward 35 24 forward 35 18 forward 35 29 forward 35 46 forward 36 38 backward 36 19 forward 36 28 forward 37 40 backward 37 20 forward 37 25 forward 38 21 backward 38 36 forward 39 22 backward 39 33 forward 40 47 backward 40 23 backward 40 32 backward 40 37 forward 41 23 backward 41 32 backward 41 45 forward 42 31 backward 42 44 forward 43 22 backward 43 14 forward 43 23 forward 43 32 forward 44 42 backward 44 34 forward 45 41 backward 45 35 forward 46 35 backward 46 47 forward 47 46 backward 47 40 forward at de.uni_freiburg.informatik.ultimate.lib.sifa.TopsortCache.lambda$2(TopsortCache.java:53) at java.base/java.util.Optional.orElseThrow(Optional.java:408) at de.uni_freiburg.informatik.ultimate.lib.sifa.TopsortCache.compute(TopsortCache.java:53) at java.base/java.util.Map.computeIfAbsent(Map.java:1003) at de.uni_freiburg.informatik.ultimate.lib.sifa.TopsortCache.topsort(TopsortCache.java:46) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:113) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpretLoisInProcedure(IcfgInterpreter.java:136) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpret(IcfgInterpreter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:102) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:262) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-12-14 11:55:29,513 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-14 11:55:29,513 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 4 [2022-12-14 11:55:29,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330932015] [2022-12-14 11:55:29,513 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-14 11:55:29,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-14 11:55:29,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:55:29,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-14 11:55:29,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-12-14 11:55:29,515 INFO L87 Difference]: Start difference. First operand 242 states and 253 transitions. Second operand has 6 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:55:29,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:55:29,566 INFO L93 Difference]: Finished difference Result 309 states and 323 transitions. [2022-12-14 11:55:29,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 11:55:29,566 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 138 [2022-12-14 11:55:29,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:55:29,567 INFO L225 Difference]: With dead ends: 309 [2022-12-14 11:55:29,567 INFO L226 Difference]: Without dead ends: 0 [2022-12-14 11:55:29,567 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 276 GetRequests, 270 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-12-14 11:55:29,568 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 51 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 11:55:29,568 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 10 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 11:55:29,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-12-14 11:55:29,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-12-14 11:55:29,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:55:29,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-12-14 11:55:29,569 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 138 [2022-12-14 11:55:29,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:55:29,569 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-12-14 11:55:29,569 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:55:29,570 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-12-14 11:55:29,570 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-12-14 11:55:29,572 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 12 remaining) [2022-12-14 11:55:29,572 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 12 remaining) [2022-12-14 11:55:29,572 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 12 remaining) [2022-12-14 11:55:29,572 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 12 remaining) [2022-12-14 11:55:29,573 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 12 remaining) [2022-12-14 11:55:29,573 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 12 remaining) [2022-12-14 11:55:29,573 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 12 remaining) [2022-12-14 11:55:29,573 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 12 remaining) [2022-12-14 11:55:29,573 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 12 remaining) [2022-12-14 11:55:29,573 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 12 remaining) [2022-12-14 11:55:29,573 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 12 remaining) [2022-12-14 11:55:29,573 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 12 remaining) [2022-12-14 11:55:29,577 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_960947e5-0355-4cdc-82b9-96fba19b8ae1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2022-12-14 11:55:29,774 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_960947e5-0355-4cdc-82b9-96fba19b8ae1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-12-14 11:55:29,778 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-12-14 11:55:30,334 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 31) no Hoare annotation was computed. [2022-12-14 11:55:30,335 INFO L899 garLoopResultBuilder]: For program point L44(line 44) no Hoare annotation was computed. [2022-12-14 11:55:30,335 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW(line 46) no Hoare annotation was computed. [2022-12-14 11:55:30,335 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 29) no Hoare annotation was computed. [2022-12-14 11:55:30,335 INFO L899 garLoopResultBuilder]: For program point L61(line 61) no Hoare annotation was computed. [2022-12-14 11:55:30,335 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW(line 59) no Hoare annotation was computed. [2022-12-14 11:55:30,335 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 29) no Hoare annotation was computed. [2022-12-14 11:55:30,335 INFO L899 garLoopResultBuilder]: For program point L29(line 29) no Hoare annotation was computed. [2022-12-14 11:55:30,335 INFO L899 garLoopResultBuilder]: For program point L29-1(line 29) no Hoare annotation was computed. [2022-12-14 11:55:30,335 INFO L895 garLoopResultBuilder]: At program point L54-2(lines 54 62) the Hoare annotation is: (and (<= |ULTIMATE.start_main_~m~0#1| 1000) (<= 1500 |ULTIMATE.start_main_~n~0#1|) (<= |ULTIMATE.start_main_~i~0#1| 2147483646) (<= 0 |ULTIMATE.start_main_~j~0#1|) (<= 0 |ULTIMATE.start_main_~i~0#1|) (<= |ULTIMATE.start_main_~n~0#1| 1500) (<= |ULTIMATE.start_main_~j~0#1| 2147483646)) [2022-12-14 11:55:30,335 INFO L899 garLoopResultBuilder]: For program point L46(line 46) no Hoare annotation was computed. [2022-12-14 11:55:30,335 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW(line 59) no Hoare annotation was computed. [2022-12-14 11:55:30,335 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2022-12-14 11:55:30,336 INFO L895 garLoopResultBuilder]: At program point L38-2(lines 38 47) the Hoare annotation is: (and (<= |ULTIMATE.start_main_~m~0#1| 1000) (<= 1500 |ULTIMATE.start_main_~n~0#1|) (<= |ULTIMATE.start_main_~i~0#1| 2147483646) (<= 0 |ULTIMATE.start_main_~j~0#1|) (<= 0 |ULTIMATE.start_main_~i~0#1|) (<= |ULTIMATE.start_main_~n~0#1| 1500) (<= |ULTIMATE.start_main_~j~0#1| 2147483646)) [2022-12-14 11:55:30,336 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW(line 61) no Hoare annotation was computed. [2022-12-14 11:55:30,336 INFO L899 garLoopResultBuilder]: For program point L31(line 31) no Hoare annotation was computed. [2022-12-14 11:55:30,336 INFO L895 garLoopResultBuilder]: At program point L56-2(lines 56 60) the Hoare annotation is: (and (<= |ULTIMATE.start_main_~m~0#1| 1000) (<= 1500 |ULTIMATE.start_main_~n~0#1|) (<= 0 |ULTIMATE.start_main_~j~0#1|) (<= 0 |ULTIMATE.start_main_~i~0#1|) (<= |ULTIMATE.start_main_~n~0#1| 1500) (<= |ULTIMATE.start_main_~i~0#1| 1499) (<= |ULTIMATE.start_main_~j~0#1| 2147483646)) [2022-12-14 11:55:30,336 INFO L899 garLoopResultBuilder]: For program point L56-3(lines 56 60) no Hoare annotation was computed. [2022-12-14 11:55:30,336 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW(line 61) no Hoare annotation was computed. [2022-12-14 11:55:30,336 INFO L895 garLoopResultBuilder]: At program point L40-2(lines 40 45) the Hoare annotation is: (and (<= |ULTIMATE.start_main_~m~0#1| 1000) (<= 1500 |ULTIMATE.start_main_~n~0#1|) (<= 0 |ULTIMATE.start_main_~j~0#1|) (<= 0 |ULTIMATE.start_main_~i~0#1|) (<= |ULTIMATE.start_main_~n~0#1| 1500) (<= |ULTIMATE.start_main_~i~0#1| 1499) (<= |ULTIMATE.start_main_~j~0#1| 2147483646)) [2022-12-14 11:55:30,336 INFO L899 garLoopResultBuilder]: For program point L40-3(lines 40 45) no Hoare annotation was computed. [2022-12-14 11:55:30,336 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW(line 44) no Hoare annotation was computed. [2022-12-14 11:55:30,336 INFO L895 garLoopResultBuilder]: At program point L24-2(lines 24 32) the Hoare annotation is: (and (<= |ULTIMATE.start_main_~m~0#1| 1000) (<= 1500 |ULTIMATE.start_main_~n~0#1|) (<= |ULTIMATE.start_main_~i~0#1| 2147483646) (<= 0 |ULTIMATE.start_main_~j~0#1|) (<= 0 |ULTIMATE.start_main_~i~0#1|) (<= |ULTIMATE.start_main_~n~0#1| 1500) (<= |ULTIMATE.start_main_~j~0#1| 2147483646)) [2022-12-14 11:55:30,336 INFO L899 garLoopResultBuilder]: For program point L41-2(lines 41 43) no Hoare annotation was computed. [2022-12-14 11:55:30,336 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-12-14 11:55:30,336 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW(line 44) no Hoare annotation was computed. [2022-12-14 11:55:30,336 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 31) no Hoare annotation was computed. [2022-12-14 11:55:30,336 INFO L899 garLoopResultBuilder]: For program point L59(line 59) no Hoare annotation was computed. [2022-12-14 11:55:30,337 INFO L899 garLoopResultBuilder]: For program point L59-1(line 59) no Hoare annotation was computed. [2022-12-14 11:55:30,337 INFO L895 garLoopResultBuilder]: At program point L26-2(lines 26 30) the Hoare annotation is: (and (<= |ULTIMATE.start_main_~m~0#1| 1000) (<= 1500 |ULTIMATE.start_main_~n~0#1|) (<= |ULTIMATE.start_main_~i~0#1| 999) (<= 0 |ULTIMATE.start_main_~j~0#1|) (<= 0 |ULTIMATE.start_main_~i~0#1|) (<= |ULTIMATE.start_main_~n~0#1| 1500) (<= |ULTIMATE.start_main_~j~0#1| 2147483646)) [2022-12-14 11:55:30,337 INFO L899 garLoopResultBuilder]: For program point L26-3(lines 26 30) no Hoare annotation was computed. [2022-12-14 11:55:30,337 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW(line 46) no Hoare annotation was computed. [2022-12-14 11:55:30,339 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 2, 1, 1, 1, 1, 1, 1] [2022-12-14 11:55:30,340 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-14 11:55:30,349 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.12 11:55:30 BoogieIcfgContainer [2022-12-14 11:55:30,349 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-14 11:55:30,349 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-14 11:55:30,349 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-14 11:55:30,349 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-14 11:55:30,350 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 11:55:20" (3/4) ... [2022-12-14 11:55:30,352 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-12-14 11:55:30,358 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 21 nodes and edges [2022-12-14 11:55:30,358 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2022-12-14 11:55:30,358 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2022-12-14 11:55:30,358 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-12-14 11:55:30,380 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_960947e5-0355-4cdc-82b9-96fba19b8ae1/bin/utaipan-gh47qXpMRh/witness.graphml [2022-12-14 11:55:30,380 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-14 11:55:30,380 INFO L158 Benchmark]: Toolchain (without parser) took 10576.69ms. Allocated memory was 169.9MB in the beginning and 228.6MB in the end (delta: 58.7MB). Free memory was 131.5MB in the beginning and 77.8MB in the end (delta: 53.6MB). Peak memory consumption was 113.4MB. Max. memory is 16.1GB. [2022-12-14 11:55:30,380 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 169.9MB. Free memory is still 112.6MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 11:55:30,381 INFO L158 Benchmark]: CACSL2BoogieTranslator took 178.13ms. Allocated memory is still 169.9MB. Free memory was 131.5MB in the beginning and 121.0MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-12-14 11:55:30,381 INFO L158 Benchmark]: Boogie Procedure Inliner took 24.05ms. Allocated memory is still 169.9MB. Free memory was 121.0MB in the beginning and 119.4MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 11:55:30,381 INFO L158 Benchmark]: Boogie Preprocessor took 16.75ms. Allocated memory is still 169.9MB. Free memory was 119.4MB in the beginning and 117.9MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 11:55:30,381 INFO L158 Benchmark]: RCFGBuilder took 324.27ms. Allocated memory is still 169.9MB. Free memory was 117.9MB in the beginning and 102.6MB in the end (delta: 15.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-12-14 11:55:30,381 INFO L158 Benchmark]: TraceAbstraction took 9997.28ms. Allocated memory was 169.9MB in the beginning and 228.6MB in the end (delta: 58.7MB). Free memory was 101.6MB in the beginning and 79.9MB in the end (delta: 21.7MB). Peak memory consumption was 99.2MB. Max. memory is 16.1GB. [2022-12-14 11:55:30,381 INFO L158 Benchmark]: Witness Printer took 30.85ms. Allocated memory is still 228.6MB. Free memory was 79.9MB in the beginning and 77.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 11:55:30,382 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 169.9MB. Free memory is still 112.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 178.13ms. Allocated memory is still 169.9MB. Free memory was 131.5MB in the beginning and 121.0MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 24.05ms. Allocated memory is still 169.9MB. Free memory was 121.0MB in the beginning and 119.4MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 16.75ms. Allocated memory is still 169.9MB. Free memory was 119.4MB in the beginning and 117.9MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 324.27ms. Allocated memory is still 169.9MB. Free memory was 117.9MB in the beginning and 102.6MB in the end (delta: 15.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 9997.28ms. Allocated memory was 169.9MB in the beginning and 228.6MB in the end (delta: 58.7MB). Free memory was 101.6MB in the beginning and 79.9MB in the end (delta: 21.7MB). Peak memory consumption was 99.2MB. Max. memory is 16.1GB. * Witness Printer took 30.85ms. Allocated memory is still 228.6MB. Free memory was 79.9MB in the beginning and 77.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 29]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 29]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 31]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 31]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 44]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 44]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 46]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 46]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 59]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 59]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 61]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 61]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 32 locations, 12 error locations. Started 1 CEGAR loops. OverallTime: 9.9s, OverallIterations: 12, TraceHistogramMax: 30, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.6s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 783 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 783 mSDsluCounter, 293 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 157 mSDsCounter, 270 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 513 IncrementalHoareTripleChecker+Invalid, 783 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 270 mSolverCounterUnsat, 136 mSDtfsCounter, 513 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 699 GetRequests, 623 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 199 ImplicationChecksByTransitivity, 2.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=242occurred in iteration=11, InterpolantAutomatonStates: 59, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 12 MinimizatonAttempts, 130 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 6 LocationsWithAnnotation, 6 PreInvPairs, 112 NumberOfFragments, 132 HoareAnnotationTreeSize, 6 FomulaSimplifications, 1197 FormulaSimplificationTreeSizeReduction, 0.2s HoareSimplificationTime, 6 FomulaSimplificationsInter, 5490 FormulaSimplificationTreeSizeReductionInter, 0.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 354 NumberOfCodeBlocks, 182 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 613 ConstructedInterpolants, 0 QuantifiedInterpolants, 1589 SizeOfPredicates, 12 NumberOfNonLiveVariables, 932 ConjunctsInSsa, 37 ConjunctsInUnsatCore, 18 InterpolantComputations, 6 PerfectInterpolantSequences, 2712/4190 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 12 specifications checked. All of them hold - InvariantResult [Line: 54]: Loop Invariant Derived loop invariant: (((((m <= 1000 && 1500 <= n) && i <= 2147483646) && 0 <= j) && 0 <= i) && n <= 1500) && j <= 2147483646 - InvariantResult [Line: 24]: Loop Invariant Derived loop invariant: (((((m <= 1000 && 1500 <= n) && i <= 2147483646) && 0 <= j) && 0 <= i) && n <= 1500) && j <= 2147483646 - InvariantResult [Line: 40]: Loop Invariant Derived loop invariant: (((((m <= 1000 && 1500 <= n) && 0 <= j) && 0 <= i) && n <= 1500) && i <= 1499) && j <= 2147483646 - InvariantResult [Line: 26]: Loop Invariant Derived loop invariant: (((((m <= 1000 && 1500 <= n) && i <= 999) && 0 <= j) && 0 <= i) && n <= 1500) && j <= 2147483646 - InvariantResult [Line: 38]: Loop Invariant Derived loop invariant: (((((m <= 1000 && 1500 <= n) && i <= 2147483646) && 0 <= j) && 0 <= i) && n <= 1500) && j <= 2147483646 - InvariantResult [Line: 56]: Loop Invariant Derived loop invariant: (((((m <= 1000 && 1500 <= n) && 0 <= j) && 0 <= i) && n <= 1500) && i <= 1499) && j <= 2147483646 RESULT: Ultimate proved your program to be correct! [2022-12-14 11:55:30,395 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_960947e5-0355-4cdc-82b9-96fba19b8ae1/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE