./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/recursive-simple/id_i5_o5-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 38b53e6a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_620616c2-3059-4968-8409-b33de0a39701/bin/utaipan-ByfvJB40ur/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_620616c2-3059-4968-8409-b33de0a39701/bin/utaipan-ByfvJB40ur/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_620616c2-3059-4968-8409-b33de0a39701/bin/utaipan-ByfvJB40ur/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_620616c2-3059-4968-8409-b33de0a39701/bin/utaipan-ByfvJB40ur/config/TaipanReach.xml -i ../../sv-benchmarks/c/recursive-simple/id_i5_o5-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_620616c2-3059-4968-8409-b33de0a39701/bin/utaipan-ByfvJB40ur/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_620616c2-3059-4968-8409-b33de0a39701/bin/utaipan-ByfvJB40ur --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 1be5a7d97aa41e02c549ddce0b54861696e25bfa9b91d41dbf151eb81f7686c7 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-38b53e6 [2022-11-25 23:26:41,861 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 23:26:41,863 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 23:26:41,888 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 23:26:41,892 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 23:26:41,896 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 23:26:41,898 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 23:26:41,902 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 23:26:41,904 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 23:26:41,909 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 23:26:41,911 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 23:26:41,913 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 23:26:41,914 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 23:26:41,918 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 23:26:41,920 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 23:26:41,922 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 23:26:41,924 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 23:26:41,925 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 23:26:41,927 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 23:26:41,933 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 23:26:41,936 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 23:26:41,938 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 23:26:41,940 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 23:26:41,941 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 23:26:41,949 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 23:26:41,951 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 23:26:41,951 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 23:26:41,953 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 23:26:41,953 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 23:26:41,957 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 23:26:41,958 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 23:26:41,959 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 23:26:41,961 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 23:26:41,962 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 23:26:41,963 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 23:26:41,963 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 23:26:41,964 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 23:26:41,964 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 23:26:41,964 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 23:26:41,966 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 23:26:41,967 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 23:26:41,968 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_620616c2-3059-4968-8409-b33de0a39701/bin/utaipan-ByfvJB40ur/config/svcomp-Overflow-32bit-Taipan_Default.epf [2022-11-25 23:26:42,009 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 23:26:42,010 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 23:26:42,011 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 23:26:42,011 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 23:26:42,012 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 23:26:42,012 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 23:26:42,012 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-25 23:26:42,013 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-25 23:26:42,013 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-25 23:26:42,013 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-25 23:26:42,014 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-25 23:26:42,015 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-25 23:26:42,015 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-25 23:26:42,015 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-25 23:26:42,016 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-25 23:26:42,016 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-25 23:26:42,016 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-25 23:26:42,016 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-25 23:26:42,017 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 23:26:42,018 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 23:26:42,018 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-25 23:26:42,018 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 23:26:42,018 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 23:26:42,019 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 23:26:42,019 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 23:26:42,019 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 23:26:42,020 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 23:26:42,020 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-25 23:26:42,021 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 23:26:42,021 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 23:26:42,021 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 23:26:42,022 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 23:26:42,022 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 23:26:42,022 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 23:26:42,022 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 23:26:42,023 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 23:26:42,023 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-25 23:26:42,023 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 23:26:42,024 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 23:26:42,024 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-25 23:26:42,024 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 23:26:42,024 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 23:26:42,025 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-25 23:26:42,025 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_620616c2-3059-4968-8409-b33de0a39701/bin/utaipan-ByfvJB40ur/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_620616c2-3059-4968-8409-b33de0a39701/bin/utaipan-ByfvJB40ur Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1be5a7d97aa41e02c549ddce0b54861696e25bfa9b91d41dbf151eb81f7686c7 [2022-11-25 23:26:42,319 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 23:26:42,341 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 23:26:42,344 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 23:26:42,345 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 23:26:42,345 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 23:26:42,347 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_620616c2-3059-4968-8409-b33de0a39701/bin/utaipan-ByfvJB40ur/../../sv-benchmarks/c/recursive-simple/id_i5_o5-2.c [2022-11-25 23:26:45,390 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 23:26:45,607 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 23:26:45,608 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_620616c2-3059-4968-8409-b33de0a39701/sv-benchmarks/c/recursive-simple/id_i5_o5-2.c [2022-11-25 23:26:45,613 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_620616c2-3059-4968-8409-b33de0a39701/bin/utaipan-ByfvJB40ur/data/895f8055d/18009d20bf6f4650bda67747202e0b4f/FLAGecd6ed6e2 [2022-11-25 23:26:45,639 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_620616c2-3059-4968-8409-b33de0a39701/bin/utaipan-ByfvJB40ur/data/895f8055d/18009d20bf6f4650bda67747202e0b4f [2022-11-25 23:26:45,645 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 23:26:45,647 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 23:26:45,653 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 23:26:45,653 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 23:26:45,658 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 23:26:45,658 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 11:26:45" (1/1) ... [2022-11-25 23:26:45,659 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@75813de1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:26:45, skipping insertion in model container [2022-11-25 23:26:45,660 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 11:26:45" (1/1) ... [2022-11-25 23:26:45,667 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 23:26:45,687 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 23:26:45,847 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_620616c2-3059-4968-8409-b33de0a39701/sv-benchmarks/c/recursive-simple/id_i5_o5-2.c[450,463] [2022-11-25 23:26:45,848 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 23:26:45,857 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 23:26:45,870 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_620616c2-3059-4968-8409-b33de0a39701/sv-benchmarks/c/recursive-simple/id_i5_o5-2.c[450,463] [2022-11-25 23:26:45,870 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 23:26:45,883 INFO L208 MainTranslator]: Completed translation [2022-11-25 23:26:45,884 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:26:45 WrapperNode [2022-11-25 23:26:45,884 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 23:26:45,885 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 23:26:45,885 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 23:26:45,886 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 23:26:45,893 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:26:45" (1/1) ... [2022-11-25 23:26:45,898 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:26:45" (1/1) ... [2022-11-25 23:26:45,914 INFO L138 Inliner]: procedures = 13, calls = 9, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 19 [2022-11-25 23:26:45,914 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 23:26:45,915 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 23:26:45,915 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 23:26:45,915 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 23:26:45,924 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:26:45" (1/1) ... [2022-11-25 23:26:45,924 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:26:45" (1/1) ... [2022-11-25 23:26:45,925 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:26:45" (1/1) ... [2022-11-25 23:26:45,926 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:26:45" (1/1) ... [2022-11-25 23:26:45,929 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:26:45" (1/1) ... [2022-11-25 23:26:45,930 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:26:45" (1/1) ... [2022-11-25 23:26:45,937 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:26:45" (1/1) ... [2022-11-25 23:26:45,938 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:26:45" (1/1) ... [2022-11-25 23:26:45,940 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 23:26:45,942 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 23:26:45,942 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 23:26:45,942 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 23:26:45,943 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:26:45" (1/1) ... [2022-11-25 23:26:45,955 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 23:26:45,967 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_620616c2-3059-4968-8409-b33de0a39701/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:26:45,984 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_620616c2-3059-4968-8409-b33de0a39701/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 23:26:46,010 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_620616c2-3059-4968-8409-b33de0a39701/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 23:26:46,046 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 23:26:46,047 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 23:26:46,047 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 23:26:46,047 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 23:26:46,047 INFO L130 BoogieDeclarations]: Found specification of procedure id [2022-11-25 23:26:46,047 INFO L138 BoogieDeclarations]: Found implementation of procedure id [2022-11-25 23:26:46,112 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 23:26:46,114 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 23:26:46,206 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 23:26:46,230 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 23:26:46,230 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-25 23:26:46,233 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 11:26:46 BoogieIcfgContainer [2022-11-25 23:26:46,233 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 23:26:46,235 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 23:26:46,236 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 23:26:46,239 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 23:26:46,239 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 11:26:45" (1/3) ... [2022-11-25 23:26:46,240 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e3f9c14 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 11:26:46, skipping insertion in model container [2022-11-25 23:26:46,240 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:26:45" (2/3) ... [2022-11-25 23:26:46,241 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e3f9c14 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 11:26:46, skipping insertion in model container [2022-11-25 23:26:46,241 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 11:26:46" (3/3) ... [2022-11-25 23:26:46,242 INFO L112 eAbstractionObserver]: Analyzing ICFG id_i5_o5-2.c [2022-11-25 23:26:46,263 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 23:26:46,263 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2022-11-25 23:26:46,314 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 23:26:46,321 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;@5e2e46b7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 23:26:46,322 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-11-25 23:26:46,326 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 10 states have (on average 1.5) internal successors, (15), 14 states have internal predecessors, (15), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-25 23:26:46,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-25 23:26:46,335 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:26:46,335 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-25 23:26:46,336 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-11-25 23:26:46,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:26:46,342 INFO L85 PathProgramCache]: Analyzing trace with hash 62814452, now seen corresponding path program 1 times [2022-11-25 23:26:46,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:26:46,353 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006952015] [2022-11-25 23:26:46,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:26:46,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:26:46,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:26:46,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:26:46,608 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:26:46,608 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006952015] [2022-11-25 23:26:46,609 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2006952015] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:26:46,609 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:26:46,609 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 23:26:46,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526303093] [2022-11-25 23:26:46,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:26:46,618 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 23:26:46,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:26:46,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 23:26:46,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-25 23:26:46,685 INFO L87 Difference]: Start difference. First operand has 18 states, 10 states have (on average 1.5) internal successors, (15), 14 states have internal predecessors, (15), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 5 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:26:46,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:26:46,842 INFO L93 Difference]: Finished difference Result 36 states and 37 transitions. [2022-11-25 23:26:46,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 23:26:46,844 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-25 23:26:46,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:26:46,855 INFO L225 Difference]: With dead ends: 36 [2022-11-25 23:26:46,855 INFO L226 Difference]: Without dead ends: 27 [2022-11-25 23:26:46,859 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-25 23:26:46,862 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 21 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 23:26:46,864 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 44 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 23:26:46,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-11-25 23:26:46,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 24. [2022-11-25 23:26:46,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 16 states have (on average 1.4375) internal successors, (23), 19 states have internal predecessors, (23), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-25 23:26:46,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2022-11-25 23:26:46,899 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 5 [2022-11-25 23:26:46,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:26:46,900 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2022-11-25 23:26:46,900 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:26:46,901 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2022-11-25 23:26:46,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-25 23:26:46,901 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:26:46,901 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-25 23:26:46,902 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-25 23:26:46,902 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting idErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-11-25 23:26:46,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:26:46,903 INFO L85 PathProgramCache]: Analyzing trace with hash 1947248065, now seen corresponding path program 1 times [2022-11-25 23:26:46,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:26:46,904 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652319314] [2022-11-25 23:26:46,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:26:46,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:26:46,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:26:46,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:26:46,974 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:26:46,974 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1652319314] [2022-11-25 23:26:46,974 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1652319314] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:26:46,975 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:26:46,975 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 23:26:46,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529014787] [2022-11-25 23:26:46,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:26:46,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 23:26:46,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:26:46,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 23:26:46,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-25 23:26:46,978 INFO L87 Difference]: Start difference. First operand 24 states and 28 transitions. Second operand has 5 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:26:47,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:26:47,021 INFO L93 Difference]: Finished difference Result 24 states and 28 transitions. [2022-11-25 23:26:47,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 23:26:47,022 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-11-25 23:26:47,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:26:47,023 INFO L225 Difference]: With dead ends: 24 [2022-11-25 23:26:47,023 INFO L226 Difference]: Without dead ends: 23 [2022-11-25 23:26:47,023 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-25 23:26:47,025 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 21 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 23:26:47,026 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 14 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 23:26:47,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2022-11-25 23:26:47,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2022-11-25 23:26:47,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 16 states have (on average 1.3125) internal successors, (21), 18 states have internal predecessors, (21), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-25 23:26:47,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2022-11-25 23:26:47,033 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 6 [2022-11-25 23:26:47,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:26:47,033 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2022-11-25 23:26:47,034 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:26:47,034 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2022-11-25 23:26:47,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-25 23:26:47,035 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:26:47,035 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2022-11-25 23:26:47,035 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-25 23:26:47,036 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-11-25 23:26:47,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:26:47,037 INFO L85 PathProgramCache]: Analyzing trace with hash 200486833, now seen corresponding path program 1 times [2022-11-25 23:26:47,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:26:47,037 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [489025931] [2022-11-25 23:26:47,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:26:47,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:26:47,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:26:47,153 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:26:47,153 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:26:47,154 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [489025931] [2022-11-25 23:26:47,154 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [489025931] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 23:26:47,154 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1990848684] [2022-11-25 23:26:47,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:26:47,155 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:26:47,155 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_620616c2-3059-4968-8409-b33de0a39701/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:26:47,159 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_620616c2-3059-4968-8409-b33de0a39701/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 23:26:47,175 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_620616c2-3059-4968-8409-b33de0a39701/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-25 23:26:47,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:26:47,222 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-25 23:26:47,227 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:26:47,337 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:26:47,338 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 23:26:47,466 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:26:47,466 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1990848684] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 23:26:47,467 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1571995335] [2022-11-25 23:26:47,494 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2022-11-25 23:26:47,495 INFO L166 IcfgInterpreter]: Building call graph [2022-11-25 23:26:47,501 FATAL L? ?]: Ignoring exception! java.lang.IllegalArgumentException: Recursive programs are not supported. at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.topsortRelevant(CallGraph.java:132) at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.(CallGraph.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.(IcfgInterpreter.java:92) at de.uni_freiburg.informatik.ultimate.plugins.sifa.SifaBuilder.construct(SifaBuilder.java:94) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:98) 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) [2022-11-25 23:26:47,505 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 23:26:47,506 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-11-25 23:26:47,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657525878] [2022-11-25 23:26:47,507 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 23:26:47,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-25 23:26:47,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:26:47,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-25 23:26:47,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2022-11-25 23:26:47,516 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand has 12 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 7 states have internal predecessors, (16), 4 states have call successors, (4), 4 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:26:47,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:26:47,761 INFO L93 Difference]: Finished difference Result 73 states and 79 transitions. [2022-11-25 23:26:47,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-25 23:26:47,762 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 7 states have internal predecessors, (16), 4 states have call successors, (4), 4 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-11-25 23:26:47,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:26:47,767 INFO L225 Difference]: With dead ends: 73 [2022-11-25 23:26:47,767 INFO L226 Difference]: Without dead ends: 65 [2022-11-25 23:26:47,769 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=77, Invalid=195, Unknown=0, NotChecked=0, Total=272 [2022-11-25 23:26:47,773 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 126 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 23:26:47,774 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 75 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 23:26:47,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2022-11-25 23:26:47,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 53. [2022-11-25 23:26:47,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 40 states have (on average 1.325) internal successors, (53), 42 states have internal predecessors, (53), 6 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-11-25 23:26:47,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 64 transitions. [2022-11-25 23:26:47,789 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 64 transitions. Word has length 10 [2022-11-25 23:26:47,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:26:47,790 INFO L495 AbstractCegarLoop]: Abstraction has 53 states and 64 transitions. [2022-11-25 23:26:47,790 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 7 states have internal predecessors, (16), 4 states have call successors, (4), 4 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:26:47,791 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 64 transitions. [2022-11-25 23:26:47,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-25 23:26:47,795 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:26:47,795 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:26:47,807 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_620616c2-3059-4968-8409-b33de0a39701/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-25 23:26:48,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_620616c2-3059-4968-8409-b33de0a39701/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:26:48,008 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting idErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-11-25 23:26:48,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:26:48,010 INFO L85 PathProgramCache]: Analyzing trace with hash 1383499620, now seen corresponding path program 1 times [2022-11-25 23:26:48,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:26:48,011 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127302806] [2022-11-25 23:26:48,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:26:48,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:26:48,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:26:48,170 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-25 23:26:48,170 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:26:48,170 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127302806] [2022-11-25 23:26:48,175 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2127302806] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:26:48,176 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:26:48,176 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 23:26:48,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035217849] [2022-11-25 23:26:48,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:26:48,177 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 23:26:48,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:26:48,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 23:26:48,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 23:26:48,180 INFO L87 Difference]: Start difference. First operand 53 states and 64 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-25 23:26:48,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:26:48,222 INFO L93 Difference]: Finished difference Result 73 states and 91 transitions. [2022-11-25 23:26:48,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 23:26:48,223 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 18 [2022-11-25 23:26:48,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:26:48,226 INFO L225 Difference]: With dead ends: 73 [2022-11-25 23:26:48,226 INFO L226 Difference]: Without dead ends: 71 [2022-11-25 23:26:48,226 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 23:26:48,227 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 1 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 23:26:48,227 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 32 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 23:26:48,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2022-11-25 23:26:48,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2022-11-25 23:26:48,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 55 states have (on average 1.2363636363636363) internal successors, (68), 56 states have internal predecessors, (68), 6 states have call successors, (6), 5 states have call predecessors, (6), 7 states have return successors, (9), 9 states have call predecessors, (9), 5 states have call successors, (9) [2022-11-25 23:26:48,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 83 transitions. [2022-11-25 23:26:48,247 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 83 transitions. Word has length 18 [2022-11-25 23:26:48,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:26:48,247 INFO L495 AbstractCegarLoop]: Abstraction has 71 states and 83 transitions. [2022-11-25 23:26:48,248 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-25 23:26:48,248 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 83 transitions. [2022-11-25 23:26:48,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-25 23:26:48,249 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:26:48,249 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2022-11-25 23:26:48,249 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-25 23:26:48,250 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting idErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-11-25 23:26:48,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:26:48,250 INFO L85 PathProgramCache]: Analyzing trace with hash -746184899, now seen corresponding path program 1 times [2022-11-25 23:26:48,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:26:48,251 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598533874] [2022-11-25 23:26:48,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:26:48,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:26:48,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:26:48,292 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-25 23:26:48,292 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:26:48,293 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [598533874] [2022-11-25 23:26:48,293 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [598533874] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:26:48,293 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:26:48,293 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 23:26:48,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885044699] [2022-11-25 23:26:48,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:26:48,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 23:26:48,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:26:48,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 23:26:48,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 23:26:48,295 INFO L87 Difference]: Start difference. First operand 71 states and 83 transitions. Second operand has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-25 23:26:48,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:26:48,307 INFO L93 Difference]: Finished difference Result 71 states and 83 transitions. [2022-11-25 23:26:48,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 23:26:48,308 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 23 [2022-11-25 23:26:48,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:26:48,309 INFO L225 Difference]: With dead ends: 71 [2022-11-25 23:26:48,309 INFO L226 Difference]: Without dead ends: 70 [2022-11-25 23:26:48,310 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 23:26:48,311 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 2 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 23:26:48,311 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 21 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 23:26:48,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2022-11-25 23:26:48,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2022-11-25 23:26:48,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 55 states have (on average 1.1454545454545455) internal successors, (63), 55 states have internal predecessors, (63), 6 states have call successors, (6), 5 states have call predecessors, (6), 7 states have return successors, (9), 9 states have call predecessors, (9), 5 states have call successors, (9) [2022-11-25 23:26:48,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 78 transitions. [2022-11-25 23:26:48,322 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 78 transitions. Word has length 23 [2022-11-25 23:26:48,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:26:48,323 INFO L495 AbstractCegarLoop]: Abstraction has 70 states and 78 transitions. [2022-11-25 23:26:48,323 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-25 23:26:48,323 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 78 transitions. [2022-11-25 23:26:48,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-25 23:26:48,327 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:26:48,327 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 1, 1, 1] [2022-11-25 23:26:48,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-25 23:26:48,328 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-11-25 23:26:48,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:26:48,328 INFO L85 PathProgramCache]: Analyzing trace with hash -107041484, now seen corresponding path program 2 times [2022-11-25 23:26:48,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:26:48,329 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1431270311] [2022-11-25 23:26:48,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:26:48,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:26:48,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:26:48,625 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:26:48,625 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:26:48,625 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1431270311] [2022-11-25 23:26:48,625 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1431270311] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 23:26:48,625 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [688018459] [2022-11-25 23:26:48,626 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-25 23:26:48,626 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:26:48,626 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_620616c2-3059-4968-8409-b33de0a39701/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:26:48,633 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_620616c2-3059-4968-8409-b33de0a39701/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 23:26:48,639 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_620616c2-3059-4968-8409-b33de0a39701/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-25 23:26:48,696 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-11-25 23:26:48,696 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 23:26:48,697 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-25 23:26:48,699 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:26:48,798 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:26:48,798 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 23:26:49,040 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:26:49,040 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [688018459] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 23:26:49,041 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [523698273] [2022-11-25 23:26:49,043 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2022-11-25 23:26:49,043 INFO L166 IcfgInterpreter]: Building call graph [2022-11-25 23:26:49,043 FATAL L? ?]: Ignoring exception! java.lang.IllegalArgumentException: Recursive programs are not supported. at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.topsortRelevant(CallGraph.java:132) at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.(CallGraph.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.(IcfgInterpreter.java:92) at de.uni_freiburg.informatik.ultimate.plugins.sifa.SifaBuilder.construct(SifaBuilder.java:94) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:98) 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) [2022-11-25 23:26:49,044 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 23:26:49,044 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 22 [2022-11-25 23:26:49,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964083631] [2022-11-25 23:26:49,045 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 23:26:49,045 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-25 23:26:49,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:26:49,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-25 23:26:49,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=416, Unknown=0, NotChecked=0, Total=552 [2022-11-25 23:26:49,047 INFO L87 Difference]: Start difference. First operand 70 states and 78 transitions. Second operand has 24 states, 21 states have (on average 1.9047619047619047) internal successors, (40), 13 states have internal predecessors, (40), 10 states have call successors, (10), 10 states have call predecessors, (10), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:26:49,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:26:49,528 INFO L93 Difference]: Finished difference Result 187 states and 203 transitions. [2022-11-25 23:26:49,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-11-25 23:26:49,529 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 21 states have (on average 1.9047619047619047) internal successors, (40), 13 states have internal predecessors, (40), 10 states have call successors, (10), 10 states have call predecessors, (10), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-11-25 23:26:49,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:26:49,530 INFO L225 Difference]: With dead ends: 187 [2022-11-25 23:26:49,530 INFO L226 Difference]: Without dead ends: 155 [2022-11-25 23:26:49,531 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 234 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=389, Invalid=1017, Unknown=0, NotChecked=0, Total=1406 [2022-11-25 23:26:49,532 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 298 mSDsluCounter, 148 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 300 SdHoareTripleChecker+Valid, 174 SdHoareTripleChecker+Invalid, 264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-25 23:26:49,533 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [300 Valid, 174 Invalid, 264 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 179 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-25 23:26:49,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2022-11-25 23:26:49,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 145. [2022-11-25 23:26:49,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 115 states have (on average 1.1478260869565218) internal successors, (132), 115 states have internal predecessors, (132), 12 states have call successors, (12), 11 states have call predecessors, (12), 16 states have return successors, (18), 18 states have call predecessors, (18), 11 states have call successors, (18) [2022-11-25 23:26:49,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 162 transitions. [2022-11-25 23:26:49,550 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 162 transitions. Word has length 25 [2022-11-25 23:26:49,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:26:49,551 INFO L495 AbstractCegarLoop]: Abstraction has 145 states and 162 transitions. [2022-11-25 23:26:49,551 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 21 states have (on average 1.9047619047619047) internal successors, (40), 13 states have internal predecessors, (40), 10 states have call successors, (10), 10 states have call predecessors, (10), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:26:49,551 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 162 transitions. [2022-11-25 23:26:49,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-11-25 23:26:49,552 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:26:49,552 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 5, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2022-11-25 23:26:49,569 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_620616c2-3059-4968-8409-b33de0a39701/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-25 23:26:49,758 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_620616c2-3059-4968-8409-b33de0a39701/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:26:49,758 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting idErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-11-25 23:26:49,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:26:49,758 INFO L85 PathProgramCache]: Analyzing trace with hash -506338079, now seen corresponding path program 1 times [2022-11-25 23:26:49,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:26:49,759 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315355300] [2022-11-25 23:26:49,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:26:49,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:26:49,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:26:49,838 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-11-25 23:26:49,839 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:26:49,839 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1315355300] [2022-11-25 23:26:49,839 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1315355300] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 23:26:49,840 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1162404776] [2022-11-25 23:26:49,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:26:49,840 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:26:49,840 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_620616c2-3059-4968-8409-b33de0a39701/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:26:49,841 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_620616c2-3059-4968-8409-b33de0a39701/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 23:26:49,863 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_620616c2-3059-4968-8409-b33de0a39701/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-25 23:26:49,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:26:49,894 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-25 23:26:49,896 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:26:49,941 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-11-25 23:26:49,941 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 23:26:50,087 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-11-25 23:26:50,092 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1162404776] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 23:26:50,092 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2101341481] [2022-11-25 23:26:50,094 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2022-11-25 23:26:50,096 INFO L166 IcfgInterpreter]: Building call graph [2022-11-25 23:26:50,097 FATAL L? ?]: Ignoring exception! java.lang.IllegalArgumentException: Recursive programs are not supported. at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.topsortRelevant(CallGraph.java:132) at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.(CallGraph.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.(IcfgInterpreter.java:92) at de.uni_freiburg.informatik.ultimate.plugins.sifa.SifaBuilder.construct(SifaBuilder.java:94) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:98) 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) [2022-11-25 23:26:50,098 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 23:26:50,102 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-11-25 23:26:50,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948342389] [2022-11-25 23:26:50,103 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 23:26:50,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-25 23:26:50,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:26:50,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-25 23:26:50,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-11-25 23:26:50,105 INFO L87 Difference]: Start difference. First operand 145 states and 162 transitions. Second operand has 12 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 12 states have internal predecessors, (28), 1 states have call successors, (2), 1 states have call predecessors, (2), 5 states have return successors, (5), 5 states have call predecessors, (5), 1 states have call successors, (5) [2022-11-25 23:26:50,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:26:50,166 INFO L93 Difference]: Finished difference Result 275 states and 321 transitions. [2022-11-25 23:26:50,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-25 23:26:50,167 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 12 states have internal predecessors, (28), 1 states have call successors, (2), 1 states have call predecessors, (2), 5 states have return successors, (5), 5 states have call predecessors, (5), 1 states have call successors, (5) Word has length 39 [2022-11-25 23:26:50,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:26:50,173 INFO L225 Difference]: With dead ends: 275 [2022-11-25 23:26:50,173 INFO L226 Difference]: Without dead ends: 274 [2022-11-25 23:26:50,174 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-11-25 23:26:50,175 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 0 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 23:26:50,176 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 67 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 23:26:50,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2022-11-25 23:26:50,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 274. [2022-11-25 23:26:50,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 274 states, 220 states have (on average 1.0772727272727274) internal successors, (237), 217 states have internal predecessors, (237), 12 states have call successors, (12), 11 states have call predecessors, (12), 40 states have return successors, (45), 45 states have call predecessors, (45), 11 states have call successors, (45) [2022-11-25 23:26:50,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 294 transitions. [2022-11-25 23:26:50,223 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 294 transitions. Word has length 39 [2022-11-25 23:26:50,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:26:50,224 INFO L495 AbstractCegarLoop]: Abstraction has 274 states and 294 transitions. [2022-11-25 23:26:50,224 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 12 states have internal predecessors, (28), 1 states have call successors, (2), 1 states have call predecessors, (2), 5 states have return successors, (5), 5 states have call predecessors, (5), 1 states have call successors, (5) [2022-11-25 23:26:50,224 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 294 transitions. [2022-11-25 23:26:50,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-11-25 23:26:50,227 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:26:50,227 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 10, 10, 10, 1, 1, 1] [2022-11-25 23:26:50,233 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_620616c2-3059-4968-8409-b33de0a39701/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-25 23:26:50,433 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_620616c2-3059-4968-8409-b33de0a39701/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:26:50,433 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-11-25 23:26:50,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:26:50,434 INFO L85 PathProgramCache]: Analyzing trace with hash -1797304428, now seen corresponding path program 3 times [2022-11-25 23:26:50,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:26:50,434 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161514777] [2022-11-25 23:26:50,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:26:50,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:26:50,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:26:50,970 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 255 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:26:50,971 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:26:50,971 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161514777] [2022-11-25 23:26:50,971 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [161514777] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 23:26:50,971 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [672072786] [2022-11-25 23:26:50,971 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-25 23:26:50,971 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:26:50,971 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_620616c2-3059-4968-8409-b33de0a39701/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:26:50,976 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_620616c2-3059-4968-8409-b33de0a39701/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 23:26:50,987 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_620616c2-3059-4968-8409-b33de0a39701/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-25 23:26:51,044 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-25 23:26:51,044 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 23:26:51,046 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-25 23:26:51,048 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:26:51,178 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 255 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:26:51,179 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 23:26:51,849 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 255 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:26:51,849 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [672072786] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 23:26:51,850 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [311888878] [2022-11-25 23:26:51,852 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2022-11-25 23:26:51,853 INFO L166 IcfgInterpreter]: Building call graph [2022-11-25 23:26:51,853 FATAL L? ?]: Ignoring exception! java.lang.IllegalArgumentException: Recursive programs are not supported. at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.topsortRelevant(CallGraph.java:132) at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.(CallGraph.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.(IcfgInterpreter.java:92) at de.uni_freiburg.informatik.ultimate.plugins.sifa.SifaBuilder.construct(SifaBuilder.java:94) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:98) 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) [2022-11-25 23:26:51,854 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 23:26:51,854 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 46 [2022-11-25 23:26:51,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188120414] [2022-11-25 23:26:51,855 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 23:26:51,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-11-25 23:26:51,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:26:51,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-11-25 23:26:51,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=556, Invalid=1700, Unknown=0, NotChecked=0, Total=2256 [2022-11-25 23:26:51,861 INFO L87 Difference]: Start difference. First operand 274 states and 294 transitions. Second operand has 48 states, 45 states have (on average 1.9555555555555555) internal successors, (88), 25 states have internal predecessors, (88), 22 states have call successors, (22), 22 states have call predecessors, (22), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:26:52,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:26:52,080 INFO L93 Difference]: Finished difference Result 279 states and 294 transitions. [2022-11-25 23:26:52,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-25 23:26:52,081 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 45 states have (on average 1.9555555555555555) internal successors, (88), 25 states have internal predecessors, (88), 22 states have call successors, (22), 22 states have call predecessors, (22), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2022-11-25 23:26:52,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:26:52,085 INFO L225 Difference]: With dead ends: 279 [2022-11-25 23:26:52,086 INFO L226 Difference]: Without dead ends: 278 [2022-11-25 23:26:52,087 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 623 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=860, Invalid=2110, Unknown=0, NotChecked=0, Total=2970 [2022-11-25 23:26:52,089 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 173 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 23:26:52,089 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [173 Valid, 138 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 23:26:52,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2022-11-25 23:26:52,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 273. [2022-11-25 23:26:52,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 273 states, 220 states have (on average 1.0727272727272728) internal successors, (236), 216 states have internal predecessors, (236), 12 states have call successors, (12), 11 states have call predecessors, (12), 40 states have return successors, (45), 45 states have call predecessors, (45), 11 states have call successors, (45) [2022-11-25 23:26:52,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 293 transitions. [2022-11-25 23:26:52,120 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 293 transitions. Word has length 55 [2022-11-25 23:26:52,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:26:52,120 INFO L495 AbstractCegarLoop]: Abstraction has 273 states and 293 transitions. [2022-11-25 23:26:52,120 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 45 states have (on average 1.9555555555555555) internal successors, (88), 25 states have internal predecessors, (88), 22 states have call successors, (22), 22 states have call predecessors, (22), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:26:52,120 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 293 transitions. [2022-11-25 23:26:52,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-11-25 23:26:52,122 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:26:52,122 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1] [2022-11-25 23:26:52,133 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_620616c2-3059-4968-8409-b33de0a39701/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-25 23:26:52,323 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_620616c2-3059-4968-8409-b33de0a39701/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-11-25 23:26:52,323 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting idErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-11-25 23:26:52,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:26:52,324 INFO L85 PathProgramCache]: Analyzing trace with hash -332018828, now seen corresponding path program 2 times [2022-11-25 23:26:52,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:26:52,324 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1131446737] [2022-11-25 23:26:52,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:26:52,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:26:52,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:26:52,489 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-11-25 23:26:52,489 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:26:52,489 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1131446737] [2022-11-25 23:26:52,489 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1131446737] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 23:26:52,489 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [870970850] [2022-11-25 23:26:52,490 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-25 23:26:52,490 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:26:52,490 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_620616c2-3059-4968-8409-b33de0a39701/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:26:52,491 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_620616c2-3059-4968-8409-b33de0a39701/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 23:26:52,515 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_620616c2-3059-4968-8409-b33de0a39701/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-25 23:26:52,551 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-11-25 23:26:52,551 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 23:26:52,552 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-25 23:26:52,554 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:26:52,627 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-11-25 23:26:52,627 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 23:26:53,357 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-11-25 23:26:53,358 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [870970850] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 23:26:53,358 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1337951754] [2022-11-25 23:26:53,360 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2022-11-25 23:26:53,360 INFO L166 IcfgInterpreter]: Building call graph [2022-11-25 23:26:53,360 FATAL L? ?]: Ignoring exception! java.lang.IllegalArgumentException: Recursive programs are not supported. at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.topsortRelevant(CallGraph.java:132) at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.(CallGraph.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.(IcfgInterpreter.java:92) at de.uni_freiburg.informatik.ultimate.plugins.sifa.SifaBuilder.construct(SifaBuilder.java:94) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:98) 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) [2022-11-25 23:26:53,360 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 23:26:53,361 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 23 [2022-11-25 23:26:53,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970205699] [2022-11-25 23:26:53,361 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 23:26:53,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-25 23:26:53,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:26:53,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-25 23:26:53,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=397, Unknown=0, NotChecked=0, Total=552 [2022-11-25 23:26:53,364 INFO L87 Difference]: Start difference. First operand 273 states and 293 transitions. Second operand has 24 states, 23 states have (on average 2.260869565217391) internal successors, (52), 24 states have internal predecessors, (52), 1 states have call successors, (2), 1 states have call predecessors, (2), 11 states have return successors, (11), 11 states have call predecessors, (11), 1 states have call successors, (11) [2022-11-25 23:26:53,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:26:53,459 INFO L93 Difference]: Finished difference Result 592 states and 677 transitions. [2022-11-25 23:26:53,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-25 23:26:53,462 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 2.260869565217391) internal successors, (52), 24 states have internal predecessors, (52), 1 states have call successors, (2), 1 states have call predecessors, (2), 11 states have return successors, (11), 11 states have call predecessors, (11), 1 states have call successors, (11) Word has length 54 [2022-11-25 23:26:53,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:26:53,466 INFO L225 Difference]: With dead ends: 592 [2022-11-25 23:26:53,466 INFO L226 Difference]: Without dead ends: 368 [2022-11-25 23:26:53,470 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 159 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=155, Invalid=397, Unknown=0, NotChecked=0, Total=552 [2022-11-25 23:26:53,473 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 0 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 23:26:53,473 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 82 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 23:26:53,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 368 states. [2022-11-25 23:26:53,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 368 to 368. [2022-11-25 23:26:53,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 368 states, 299 states have (on average 1.0367892976588629) internal successors, (310), 290 states have internal predecessors, (310), 12 states have call successors, (12), 11 states have call predecessors, (12), 56 states have return successors, (66), 66 states have call predecessors, (66), 11 states have call successors, (66) [2022-11-25 23:26:53,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 368 states to 368 states and 388 transitions. [2022-11-25 23:26:53,493 INFO L78 Accepts]: Start accepts. Automaton has 368 states and 388 transitions. Word has length 54 [2022-11-25 23:26:53,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:26:53,494 INFO L495 AbstractCegarLoop]: Abstraction has 368 states and 388 transitions. [2022-11-25 23:26:53,494 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 2.260869565217391) internal successors, (52), 24 states have internal predecessors, (52), 1 states have call successors, (2), 1 states have call predecessors, (2), 11 states have return successors, (11), 11 states have call predecessors, (11), 1 states have call successors, (11) [2022-11-25 23:26:53,494 INFO L276 IsEmpty]: Start isEmpty. Operand 368 states and 388 transitions. [2022-11-25 23:26:53,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-11-25 23:26:53,504 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:26:53,505 INFO L195 NwaCegarLoop]: trace histogram [12, 11, 11, 11, 11, 11, 11, 11, 11, 10, 1, 1, 1, 1] [2022-11-25 23:26:53,515 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_620616c2-3059-4968-8409-b33de0a39701/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-25 23:26:53,710 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_620616c2-3059-4968-8409-b33de0a39701/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:26:53,711 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting idErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-11-25 23:26:53,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:26:53,711 INFO L85 PathProgramCache]: Analyzing trace with hash 690114932, now seen corresponding path program 3 times [2022-11-25 23:26:53,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:26:53,712 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515799775] [2022-11-25 23:26:53,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:26:53,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:26:53,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:26:54,268 INFO L134 CoverageAnalysis]: Checked inductivity of 572 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 297 trivial. 0 not checked. [2022-11-25 23:26:54,269 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:26:54,269 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515799775] [2022-11-25 23:26:54,269 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [515799775] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 23:26:54,269 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1190466157] [2022-11-25 23:26:54,269 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-25 23:26:54,269 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:26:54,270 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_620616c2-3059-4968-8409-b33de0a39701/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:26:54,271 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_620616c2-3059-4968-8409-b33de0a39701/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 23:26:54,303 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_620616c2-3059-4968-8409-b33de0a39701/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-25 23:26:54,358 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-25 23:26:54,358 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 23:26:54,360 INFO L263 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 26 conjunts are in the unsatisfiable core [2022-11-25 23:26:54,363 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:26:54,852 INFO L134 CoverageAnalysis]: Checked inductivity of 572 backedges. 275 proven. 52 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2022-11-25 23:26:54,852 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 23:27:01,154 INFO L134 CoverageAnalysis]: Checked inductivity of 572 backedges. 275 proven. 242 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-11-25 23:27:01,155 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1190466157] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 23:27:01,155 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2087212884] [2022-11-25 23:27:01,159 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2022-11-25 23:27:01,159 INFO L166 IcfgInterpreter]: Building call graph [2022-11-25 23:27:01,159 FATAL L? ?]: Ignoring exception! java.lang.IllegalArgumentException: Recursive programs are not supported. at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.topsortRelevant(CallGraph.java:132) at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.(CallGraph.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.(IcfgInterpreter.java:92) at de.uni_freiburg.informatik.ultimate.plugins.sifa.SifaBuilder.construct(SifaBuilder.java:94) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:98) 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) [2022-11-25 23:27:01,160 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 23:27:01,160 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 17, 27] total 53 [2022-11-25 23:27:01,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230209110] [2022-11-25 23:27:01,161 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 23:27:01,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2022-11-25 23:27:01,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:27:01,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2022-11-25 23:27:01,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=353, Invalid=2403, Unknown=0, NotChecked=0, Total=2756 [2022-11-25 23:27:01,165 INFO L87 Difference]: Start difference. First operand 368 states and 388 transitions. Second operand has 53 states, 51 states have (on average 2.9607843137254903) internal successors, (151), 51 states have internal predecessors, (151), 16 states have call successors, (17), 3 states have call predecessors, (17), 22 states have return successors, (33), 22 states have call predecessors, (33), 14 states have call successors, (33) [2022-11-25 23:27:01,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:27:01,624 INFO L93 Difference]: Finished difference Result 368 states and 388 transitions. [2022-11-25 23:27:01,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-25 23:27:01,625 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 51 states have (on average 2.9607843137254903) internal successors, (151), 51 states have internal predecessors, (151), 16 states have call successors, (17), 3 states have call predecessors, (17), 22 states have return successors, (33), 22 states have call predecessors, (33), 14 states have call successors, (33) Word has length 114 [2022-11-25 23:27:01,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:27:01,625 INFO L225 Difference]: With dead ends: 368 [2022-11-25 23:27:01,626 INFO L226 Difference]: Without dead ends: 0 [2022-11-25 23:27:01,628 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 261 GetRequests, 187 SyntacticMatches, 11 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1411 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=717, Invalid=3443, Unknown=0, NotChecked=0, Total=4160 [2022-11-25 23:27:01,628 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 182 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 313 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 182 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 366 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 313 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-25 23:27:01,629 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [182 Valid, 49 Invalid, 366 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 313 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-25 23:27:01,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-25 23:27:01,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-25 23:27:01,629 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) [2022-11-25 23:27:01,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-25 23:27:01,630 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 114 [2022-11-25 23:27:01,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:27:01,630 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-25 23:27:01,630 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 51 states have (on average 2.9607843137254903) internal successors, (151), 51 states have internal predecessors, (151), 16 states have call successors, (17), 3 states have call predecessors, (17), 22 states have return successors, (33), 22 states have call predecessors, (33), 14 states have call successors, (33) [2022-11-25 23:27:01,632 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-25 23:27:01,632 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-25 23:27:01,653 INFO L805 garLoopResultBuilder]: Registering result SAFE for location idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 4 remaining) [2022-11-25 23:27:01,654 INFO L805 garLoopResultBuilder]: Registering result SAFE for location idErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 4 remaining) [2022-11-25 23:27:01,654 INFO L805 garLoopResultBuilder]: Registering result SAFE for location idErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 4 remaining) [2022-11-25 23:27:01,654 INFO L805 garLoopResultBuilder]: Registering result SAFE for location idErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 4 remaining) [2022-11-25 23:27:01,661 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_620616c2-3059-4968-8409-b33de0a39701/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-25 23:27:01,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_620616c2-3059-4968-8409-b33de0a39701/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:27:01,862 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-11-25 23:27:02,030 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-11-25 23:27:02,031 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-11-25 23:27:02,031 INFO L895 garLoopResultBuilder]: At program point L13(line 13) the Hoare annotation is: (and (<= 5 |ULTIMATE.start_main_~input~0#1|) (<= |ULTIMATE.start_main_~input~0#1| 5)) [2022-11-25 23:27:02,031 INFO L899 garLoopResultBuilder]: For program point L13-1(line 13) no Hoare annotation was computed. [2022-11-25 23:27:02,031 INFO L899 garLoopResultBuilder]: For program point idErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 8) no Hoare annotation was computed. [2022-11-25 23:27:02,031 INFO L899 garLoopResultBuilder]: For program point idErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 8) no Hoare annotation was computed. [2022-11-25 23:27:02,031 INFO L899 garLoopResultBuilder]: For program point idFINAL(lines 6 9) no Hoare annotation was computed. [2022-11-25 23:27:02,032 INFO L899 garLoopResultBuilder]: For program point idEXIT(lines 6 9) no Hoare annotation was computed. [2022-11-25 23:27:02,032 INFO L902 garLoopResultBuilder]: At program point idENTRY(lines 6 9) the Hoare annotation is: true [2022-11-25 23:27:02,032 INFO L899 garLoopResultBuilder]: For program point idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 8) no Hoare annotation was computed. [2022-11-25 23:27:02,032 INFO L899 garLoopResultBuilder]: For program point idErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 8) no Hoare annotation was computed. [2022-11-25 23:27:02,032 INFO L899 garLoopResultBuilder]: For program point L8(line 8) no Hoare annotation was computed. [2022-11-25 23:27:02,032 INFO L899 garLoopResultBuilder]: For program point L7(line 7) no Hoare annotation was computed. [2022-11-25 23:27:02,032 INFO L899 garLoopResultBuilder]: For program point L8-1(line 8) no Hoare annotation was computed. [2022-11-25 23:27:02,032 INFO L895 garLoopResultBuilder]: At program point L8-2(line 8) the Hoare annotation is: (let ((.cse0 (not (<= |id_#in~x| 5)))) (and (or (and (<= id_~x |id_#in~x|) (<= 1 id_~x)) .cse0 (not (<= 0 |id_#in~x|))) (or (<= 3 id_~x) .cse0 (not (<= 3 |id_#in~x|))) (or (not (<= 5 |id_#in~x|)) .cse0 (<= 5 id_~x)) (or (<= 2 id_~x) (not (<= 2 |id_#in~x|)) .cse0) (or (not (<= 4 |id_#in~x|)) (<= 4 id_~x) .cse0))) [2022-11-25 23:27:02,032 INFO L899 garLoopResultBuilder]: For program point L8-3(line 8) no Hoare annotation was computed. [2022-11-25 23:27:02,033 INFO L899 garLoopResultBuilder]: For program point L8-4(line 8) no Hoare annotation was computed. [2022-11-25 23:27:02,033 INFO L899 garLoopResultBuilder]: For program point L8-5(line 8) no Hoare annotation was computed. [2022-11-25 23:27:02,036 INFO L445 BasicCegarLoop]: Path program histogram: [3, 3, 1, 1, 1, 1] [2022-11-25 23:27:02,038 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-25 23:27:02,051 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 11:27:02 BoogieIcfgContainer [2022-11-25 23:27:02,052 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-25 23:27:02,052 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-25 23:27:02,053 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-25 23:27:02,053 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-25 23:27:02,054 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 11:26:46" (3/4) ... [2022-11-25 23:27:02,056 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-25 23:27:02,063 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure id [2022-11-25 23:27:02,068 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2022-11-25 23:27:02,069 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2022-11-25 23:27:02,069 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2022-11-25 23:27:02,069 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-25 23:27:02,097 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_620616c2-3059-4968-8409-b33de0a39701/bin/utaipan-ByfvJB40ur/witness.graphml [2022-11-25 23:27:02,097 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-25 23:27:02,098 INFO L158 Benchmark]: Toolchain (without parser) took 16451.38ms. Allocated memory was 142.6MB in the beginning and 207.6MB in the end (delta: 65.0MB). Free memory was 87.5MB in the beginning and 163.1MB in the end (delta: -75.6MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 23:27:02,098 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 107.0MB. Free memory is still 61.6MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 23:27:02,099 INFO L158 Benchmark]: CACSL2BoogieTranslator took 231.94ms. Allocated memory is still 142.6MB. Free memory was 87.3MB in the beginning and 77.6MB in the end (delta: 9.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-25 23:27:02,099 INFO L158 Benchmark]: Boogie Procedure Inliner took 28.92ms. Allocated memory is still 142.6MB. Free memory was 77.6MB in the beginning and 76.1MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-25 23:27:02,099 INFO L158 Benchmark]: Boogie Preprocessor took 25.72ms. Allocated memory is still 142.6MB. Free memory was 76.1MB in the beginning and 75.1MB in the end (delta: 990.6kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 23:27:02,100 INFO L158 Benchmark]: RCFGBuilder took 291.79ms. Allocated memory is still 142.6MB. Free memory was 75.1MB in the beginning and 108.6MB in the end (delta: -33.5MB). Peak memory consumption was 9.6MB. Max. memory is 16.1GB. [2022-11-25 23:27:02,100 INFO L158 Benchmark]: TraceAbstraction took 15816.40ms. Allocated memory was 142.6MB in the beginning and 207.6MB in the end (delta: 65.0MB). Free memory was 108.0MB in the beginning and 165.2MB in the end (delta: -57.2MB). Peak memory consumption was 5.9MB. Max. memory is 16.1GB. [2022-11-25 23:27:02,100 INFO L158 Benchmark]: Witness Printer took 45.18ms. Allocated memory is still 207.6MB. Free memory was 165.2MB in the beginning and 163.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-25 23:27:02,102 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28ms. Allocated memory is still 107.0MB. Free memory is still 61.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 231.94ms. Allocated memory is still 142.6MB. Free memory was 87.3MB in the beginning and 77.6MB in the end (delta: 9.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 28.92ms. Allocated memory is still 142.6MB. Free memory was 77.6MB in the beginning and 76.1MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 25.72ms. Allocated memory is still 142.6MB. Free memory was 76.1MB in the beginning and 75.1MB in the end (delta: 990.6kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 291.79ms. Allocated memory is still 142.6MB. Free memory was 75.1MB in the beginning and 108.6MB in the end (delta: -33.5MB). Peak memory consumption was 9.6MB. Max. memory is 16.1GB. * TraceAbstraction took 15816.40ms. Allocated memory was 142.6MB in the beginning and 207.6MB in the end (delta: 65.0MB). Free memory was 108.0MB in the beginning and 165.2MB in the end (delta: -57.2MB). Peak memory consumption was 5.9MB. Max. memory is 16.1GB. * Witness Printer took 45.18ms. Allocated memory is still 207.6MB. Free memory was 165.2MB in the beginning and 163.1MB 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: 8]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 8]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 8]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 8]: 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 2 procedures, 18 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 15.7s, OverallIterations: 10, TraceHistogramMax: 12, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 2.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 829 SdHoareTripleChecker+Valid, 0.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 824 mSDsluCounter, 696 SdHoareTripleChecker+Invalid, 0.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 561 mSDsCounter, 210 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 898 IncrementalHoareTripleChecker+Invalid, 1108 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 210 mSolverCounterUnsat, 135 mSDtfsCounter, 898 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 711 GetRequests, 490 SyntacticMatches, 11 SemanticMatches, 210 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2484 ImplicationChecksByTransitivity, 3.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=368occurred in iteration=9, InterpolantAutomatonStates: 125, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 10 MinimizatonAttempts, 30 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 25 PreInvPairs, 25 NumberOfFragments, 73 HoareAnnotationTreeSize, 25 FomulaSimplifications, 140 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 407 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 11.2s InterpolantComputationTime, 646 NumberOfCodeBlocks, 641 NumberOfCodeBlocksAsserted, 26 NumberOfCheckSat, 921 ConstructedInterpolants, 0 QuantifiedInterpolants, 2620 SizeOfPredicates, 30 NumberOfNonLiveVariables, 687 ConjunctsInSsa, 84 ConjunctsInUnsatCore, 22 InterpolantComputations, 4 PerfectInterpolantSequences, 1529/3163 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 4 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-11-25 23:27:02,120 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_620616c2-3059-4968-8409-b33de0a39701/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE