./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/recursive-simple/id_i20_o20-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_487e50c6-1709-400a-bbb8-f596d5299fb1/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_487e50c6-1709-400a-bbb8-f596d5299fb1/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_487e50c6-1709-400a-bbb8-f596d5299fb1/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_487e50c6-1709-400a-bbb8-f596d5299fb1/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/recursive-simple/id_i20_o20-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_487e50c6-1709-400a-bbb8-f596d5299fb1/bin/utaipan-gh47qXpMRh/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_487e50c6-1709-400a-bbb8-f596d5299fb1/bin/utaipan-gh47qXpMRh --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c3376ee309c42e8280cfc81381fd928e4a895fffc424cbfa81d01112976a2d85 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-14 07:49:57,132 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 07:49:57,133 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 07:49:57,152 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 07:49:57,153 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 07:49:57,154 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 07:49:57,155 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 07:49:57,157 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 07:49:57,158 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 07:49:57,159 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 07:49:57,160 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 07:49:57,161 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 07:49:57,161 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 07:49:57,162 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 07:49:57,163 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 07:49:57,164 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 07:49:57,165 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 07:49:57,166 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 07:49:57,167 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 07:49:57,169 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 07:49:57,171 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 07:49:57,172 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 07:49:57,173 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 07:49:57,174 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 07:49:57,177 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 07:49:57,177 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 07:49:57,178 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 07:49:57,178 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 07:49:57,179 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 07:49:57,180 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 07:49:57,180 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 07:49:57,181 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 07:49:57,181 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 07:49:57,182 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 07:49:57,183 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 07:49:57,183 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 07:49:57,184 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 07:49:57,184 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 07:49:57,184 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 07:49:57,185 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 07:49:57,185 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 07:49:57,186 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_487e50c6-1709-400a-bbb8-f596d5299fb1/bin/utaipan-gh47qXpMRh/config/svcomp-Overflow-32bit-Taipan_Default.epf [2022-12-14 07:49:57,223 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 07:49:57,224 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 07:49:57,224 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 07:49:57,224 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 07:49:57,225 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 07:49:57,225 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 07:49:57,225 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 07:49:57,236 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 07:49:57,236 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 07:49:57,236 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 07:49:57,237 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 07:49:57,237 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 07:49:57,237 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 07:49:57,237 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 07:49:57,237 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 07:49:57,238 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 07:49:57,238 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 07:49:57,238 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 07:49:57,238 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 07:49:57,239 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 07:49:57,239 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-14 07:49:57,239 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 07:49:57,239 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 07:49:57,239 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 07:49:57,239 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 07:49:57,240 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 07:49:57,240 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 07:49:57,240 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-12-14 07:49:57,240 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 07:49:57,240 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 07:49:57,240 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 07:49:57,240 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 07:49:57,240 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 07:49:57,240 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 07:49:57,241 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 07:49:57,241 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 07:49:57,241 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 07:49:57,241 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 07:49:57,241 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 07:49:57,241 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 07:49:57,241 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 07:49:57,241 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 07:49:57,241 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 07:49:57,241 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_487e50c6-1709-400a-bbb8-f596d5299fb1/bin/utaipan-gh47qXpMRh/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_487e50c6-1709-400a-bbb8-f596d5299fb1/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c3376ee309c42e8280cfc81381fd928e4a895fffc424cbfa81d01112976a2d85 [2022-12-14 07:49:57,406 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 07:49:57,426 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 07:49:57,428 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 07:49:57,428 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 07:49:57,429 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 07:49:57,430 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_487e50c6-1709-400a-bbb8-f596d5299fb1/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/recursive-simple/id_i20_o20-1.c [2022-12-14 07:50:00,050 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 07:50:00,191 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 07:50:00,191 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_487e50c6-1709-400a-bbb8-f596d5299fb1/sv-benchmarks/c/recursive-simple/id_i20_o20-1.c [2022-12-14 07:50:00,196 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_487e50c6-1709-400a-bbb8-f596d5299fb1/bin/utaipan-gh47qXpMRh/data/6de6fe433/6db957127ece43e0b3421257043f5d8b/FLAGc0c42140a [2022-12-14 07:50:00,205 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_487e50c6-1709-400a-bbb8-f596d5299fb1/bin/utaipan-gh47qXpMRh/data/6de6fe433/6db957127ece43e0b3421257043f5d8b [2022-12-14 07:50:00,207 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 07:50:00,208 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 07:50:00,209 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 07:50:00,209 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 07:50:00,212 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 07:50:00,213 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 07:50:00" (1/1) ... [2022-12-14 07:50:00,214 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@71c3d34e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:50:00, skipping insertion in model container [2022-12-14 07:50:00,214 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 07:50:00" (1/1) ... [2022-12-14 07:50:00,219 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 07:50:00,227 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 07:50:00,326 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_487e50c6-1709-400a-bbb8-f596d5299fb1/sv-benchmarks/c/recursive-simple/id_i20_o20-1.c[454,467] [2022-12-14 07:50:00,327 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 07:50:00,335 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 07:50:00,346 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_487e50c6-1709-400a-bbb8-f596d5299fb1/sv-benchmarks/c/recursive-simple/id_i20_o20-1.c[454,467] [2022-12-14 07:50:00,346 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 07:50:00,356 INFO L208 MainTranslator]: Completed translation [2022-12-14 07:50:00,356 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:50:00 WrapperNode [2022-12-14 07:50:00,356 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 07:50:00,357 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 07:50:00,357 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 07:50:00,357 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 07:50:00,362 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:50:00" (1/1) ... [2022-12-14 07:50:00,367 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:50:00" (1/1) ... [2022-12-14 07:50:00,379 INFO L138 Inliner]: procedures = 13, calls = 9, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 19 [2022-12-14 07:50:00,380 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 07:50:00,380 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 07:50:00,380 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 07:50:00,380 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 07:50:00,386 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:50:00" (1/1) ... [2022-12-14 07:50:00,387 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:50:00" (1/1) ... [2022-12-14 07:50:00,388 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:50:00" (1/1) ... [2022-12-14 07:50:00,388 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:50:00" (1/1) ... [2022-12-14 07:50:00,390 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:50:00" (1/1) ... [2022-12-14 07:50:00,391 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:50:00" (1/1) ... [2022-12-14 07:50:00,392 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:50:00" (1/1) ... [2022-12-14 07:50:00,392 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:50:00" (1/1) ... [2022-12-14 07:50:00,394 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 07:50:00,395 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 07:50:00,395 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 07:50:00,395 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 07:50:00,395 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:50:00" (1/1) ... [2022-12-14 07:50:00,401 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 07:50:00,412 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_487e50c6-1709-400a-bbb8-f596d5299fb1/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 07:50:00,423 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_487e50c6-1709-400a-bbb8-f596d5299fb1/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 07:50:00,425 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_487e50c6-1709-400a-bbb8-f596d5299fb1/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 07:50:00,461 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 07:50:00,461 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 07:50:00,461 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 07:50:00,461 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 07:50:00,461 INFO L130 BoogieDeclarations]: Found specification of procedure id [2022-12-14 07:50:00,462 INFO L138 BoogieDeclarations]: Found implementation of procedure id [2022-12-14 07:50:00,519 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 07:50:00,521 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 07:50:00,603 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 07:50:00,622 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 07:50:00,623 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-14 07:50:00,625 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 07:50:00 BoogieIcfgContainer [2022-12-14 07:50:00,625 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 07:50:00,627 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 07:50:00,628 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 07:50:00,631 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 07:50:00,631 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 07:50:00" (1/3) ... [2022-12-14 07:50:00,632 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42e0d9e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 07:50:00, skipping insertion in model container [2022-12-14 07:50:00,632 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:50:00" (2/3) ... [2022-12-14 07:50:00,633 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42e0d9e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 07:50:00, skipping insertion in model container [2022-12-14 07:50:00,633 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 07:50:00" (3/3) ... [2022-12-14 07:50:00,634 INFO L112 eAbstractionObserver]: Analyzing ICFG id_i20_o20-1.c [2022-12-14 07:50:00,653 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 07:50:00,654 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2022-12-14 07:50:00,693 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 07:50:00,698 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;@637d026c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 07:50:00,698 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-12-14 07:50:00,701 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) [2022-12-14 07:50:00,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-12-14 07:50:00,707 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:50:00,708 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-12-14 07:50:00,708 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-12-14 07:50:00,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:50:00,714 INFO L85 PathProgramCache]: Analyzing trace with hash 62814452, now seen corresponding path program 1 times [2022-12-14 07:50:00,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:50:00,726 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [804330241] [2022-12-14 07:50:00,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:50:00,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:50:00,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:50:00,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:50:00,882 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:50:00,882 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [804330241] [2022-12-14 07:50:00,882 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [804330241] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:50:00,883 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 07:50:00,883 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 07:50:00,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013249354] [2022-12-14 07:50:00,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:50:00,888 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 07:50:00,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:50:00,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 07:50:00,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 07:50:00,911 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) [2022-12-14 07:50:00,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:50:00,975 INFO L93 Difference]: Finished difference Result 36 states and 37 transitions. [2022-12-14 07:50:00,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 07:50:00,977 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 [2022-12-14 07:50:00,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:50:00,982 INFO L225 Difference]: With dead ends: 36 [2022-12-14 07:50:00,982 INFO L226 Difference]: Without dead ends: 27 [2022-12-14 07:50:00,984 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 [2022-12-14 07:50:00,986 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 21 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s 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, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 07:50:00,987 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 44 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 07:50:00,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-12-14 07:50:01,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 24. [2022-12-14 07:50:01,012 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) [2022-12-14 07:50:01,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2022-12-14 07:50:01,013 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 5 [2022-12-14 07:50:01,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:50:01,014 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2022-12-14 07:50:01,014 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) [2022-12-14 07:50:01,014 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2022-12-14 07:50:01,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-12-14 07:50:01,014 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:50:01,014 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-12-14 07:50:01,014 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 07:50:01,015 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting idErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-12-14 07:50:01,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:50:01,015 INFO L85 PathProgramCache]: Analyzing trace with hash 1947248065, now seen corresponding path program 1 times [2022-12-14 07:50:01,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:50:01,016 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313262405] [2022-12-14 07:50:01,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:50:01,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:50:01,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:50:01,069 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:50:01,069 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:50:01,069 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [313262405] [2022-12-14 07:50:01,069 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [313262405] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:50:01,069 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 07:50:01,070 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 07:50:01,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651187986] [2022-12-14 07:50:01,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:50:01,071 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 07:50:01,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:50:01,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 07:50:01,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 07:50:01,072 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) [2022-12-14 07:50:01,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:50:01,108 INFO L93 Difference]: Finished difference Result 24 states and 28 transitions. [2022-12-14 07:50:01,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 07:50:01,108 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 [2022-12-14 07:50:01,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:50:01,109 INFO L225 Difference]: With dead ends: 24 [2022-12-14 07:50:01,109 INFO L226 Difference]: Without dead ends: 23 [2022-12-14 07:50:01,109 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 [2022-12-14 07:50:01,110 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 [2022-12-14 07:50:01,111 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] [2022-12-14 07:50:01,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2022-12-14 07:50:01,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2022-12-14 07:50:01,115 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) [2022-12-14 07:50:01,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2022-12-14 07:50:01,116 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 6 [2022-12-14 07:50:01,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:50:01,116 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2022-12-14 07:50:01,116 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) [2022-12-14 07:50:01,117 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2022-12-14 07:50:01,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-12-14 07:50:01,117 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:50:01,117 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2022-12-14 07:50:01,117 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-14 07:50:01,117 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-12-14 07:50:01,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:50:01,118 INFO L85 PathProgramCache]: Analyzing trace with hash 200486833, now seen corresponding path program 1 times [2022-12-14 07:50:01,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:50:01,119 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1260206387] [2022-12-14 07:50:01,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:50:01,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:50:01,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:50:01,208 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:50:01,208 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:50:01,209 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1260206387] [2022-12-14 07:50:01,209 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1260206387] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 07:50:01,209 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [692900205] [2022-12-14 07:50:01,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:50:01,210 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 07:50:01,210 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_487e50c6-1709-400a-bbb8-f596d5299fb1/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 07:50:01,211 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_487e50c6-1709-400a-bbb8-f596d5299fb1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 07:50:01,212 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_487e50c6-1709-400a-bbb8-f596d5299fb1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-14 07:50:01,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:50:01,250 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-14 07:50:01,254 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 07:50:01,306 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:50:01,306 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 07:50:01,366 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:50:01,366 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [692900205] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 07:50:01,366 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1270021954] [2022-12-14 07:50:01,382 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2022-12-14 07:50:01,382 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 07:50:01,385 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) [2022-12-14 07:50:01,386 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 07:50:01,386 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-12-14 07:50:01,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857468073] [2022-12-14 07:50:01,387 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 07:50:01,387 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-14 07:50:01,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:50:01,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-14 07:50:01,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2022-12-14 07:50:01,388 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) [2022-12-14 07:50:01,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:50:01,513 INFO L93 Difference]: Finished difference Result 73 states and 79 transitions. [2022-12-14 07:50:01,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-14 07:50:01,514 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 [2022-12-14 07:50:01,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:50:01,516 INFO L225 Difference]: With dead ends: 73 [2022-12-14 07:50:01,517 INFO L226 Difference]: Without dead ends: 65 [2022-12-14 07:50:01,517 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=77, Invalid=195, Unknown=0, NotChecked=0, Total=272 [2022-12-14 07:50:01,519 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 [2022-12-14 07:50:01,519 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] [2022-12-14 07:50:01,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2022-12-14 07:50:01,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 53. [2022-12-14 07:50:01,527 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) [2022-12-14 07:50:01,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 64 transitions. [2022-12-14 07:50:01,529 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 64 transitions. Word has length 10 [2022-12-14 07:50:01,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:50:01,529 INFO L495 AbstractCegarLoop]: Abstraction has 53 states and 64 transitions. [2022-12-14 07:50:01,529 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) [2022-12-14 07:50:01,529 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 64 transitions. [2022-12-14 07:50:01,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-12-14 07:50:01,530 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:50:01,530 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 07:50:01,535 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_487e50c6-1709-400a-bbb8-f596d5299fb1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-14 07:50:01,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_487e50c6-1709-400a-bbb8-f596d5299fb1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 07:50:01,731 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting idErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-12-14 07:50:01,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:50:01,731 INFO L85 PathProgramCache]: Analyzing trace with hash 1383499620, now seen corresponding path program 1 times [2022-12-14 07:50:01,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:50:01,732 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372736236] [2022-12-14 07:50:01,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:50:01,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:50:01,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:50:01,783 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-12-14 07:50:01,784 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:50:01,784 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372736236] [2022-12-14 07:50:01,784 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [372736236] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:50:01,784 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 07:50:01,784 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 07:50:01,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353775603] [2022-12-14 07:50:01,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:50:01,785 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 07:50:01,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:50:01,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 07:50:01,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 07:50:01,786 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) [2022-12-14 07:50:01,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:50:01,804 INFO L93 Difference]: Finished difference Result 73 states and 91 transitions. [2022-12-14 07:50:01,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 07:50:01,805 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 [2022-12-14 07:50:01,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:50:01,806 INFO L225 Difference]: With dead ends: 73 [2022-12-14 07:50:01,806 INFO L226 Difference]: Without dead ends: 71 [2022-12-14 07:50:01,806 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 [2022-12-14 07:50:01,807 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 [2022-12-14 07:50:01,807 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] [2022-12-14 07:50:01,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2022-12-14 07:50:01,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2022-12-14 07:50:01,815 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) [2022-12-14 07:50:01,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 83 transitions. [2022-12-14 07:50:01,816 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 83 transitions. Word has length 18 [2022-12-14 07:50:01,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:50:01,816 INFO L495 AbstractCegarLoop]: Abstraction has 71 states and 83 transitions. [2022-12-14 07:50:01,816 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) [2022-12-14 07:50:01,816 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 83 transitions. [2022-12-14 07:50:01,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-12-14 07:50:01,817 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:50:01,817 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2022-12-14 07:50:01,817 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-14 07:50:01,817 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting idErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-12-14 07:50:01,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:50:01,818 INFO L85 PathProgramCache]: Analyzing trace with hash -746184899, now seen corresponding path program 1 times [2022-12-14 07:50:01,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:50:01,818 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798643498] [2022-12-14 07:50:01,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:50:01,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:50:01,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:50:01,844 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-14 07:50:01,844 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:50:01,845 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1798643498] [2022-12-14 07:50:01,845 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1798643498] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:50:01,845 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 07:50:01,845 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 07:50:01,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450775950] [2022-12-14 07:50:01,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:50:01,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 07:50:01,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:50:01,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 07:50:01,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 07:50:01,847 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) [2022-12-14 07:50:01,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:50:01,857 INFO L93 Difference]: Finished difference Result 71 states and 83 transitions. [2022-12-14 07:50:01,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 07:50:01,858 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 [2022-12-14 07:50:01,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:50:01,859 INFO L225 Difference]: With dead ends: 71 [2022-12-14 07:50:01,859 INFO L226 Difference]: Without dead ends: 70 [2022-12-14 07:50:01,860 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 [2022-12-14 07:50:01,861 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 [2022-12-14 07:50:01,861 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] [2022-12-14 07:50:01,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2022-12-14 07:50:01,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2022-12-14 07:50:01,872 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) [2022-12-14 07:50:01,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 78 transitions. [2022-12-14 07:50:01,873 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 78 transitions. Word has length 23 [2022-12-14 07:50:01,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:50:01,874 INFO L495 AbstractCegarLoop]: Abstraction has 70 states and 78 transitions. [2022-12-14 07:50:01,874 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) [2022-12-14 07:50:01,874 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 78 transitions. [2022-12-14 07:50:01,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-12-14 07:50:01,875 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:50:01,875 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 1, 1, 1] [2022-12-14 07:50:01,875 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-14 07:50:01,876 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-12-14 07:50:01,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:50:01,876 INFO L85 PathProgramCache]: Analyzing trace with hash -107041484, now seen corresponding path program 2 times [2022-12-14 07:50:01,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:50:01,876 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [118417442] [2022-12-14 07:50:01,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:50:01,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:50:01,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:50:02,014 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:50:02,014 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:50:02,015 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [118417442] [2022-12-14 07:50:02,015 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [118417442] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 07:50:02,015 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [501179588] [2022-12-14 07:50:02,015 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 07:50:02,015 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 07:50:02,015 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_487e50c6-1709-400a-bbb8-f596d5299fb1/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 07:50:02,016 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_487e50c6-1709-400a-bbb8-f596d5299fb1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 07:50:02,017 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_487e50c6-1709-400a-bbb8-f596d5299fb1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-14 07:50:02,053 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-12-14 07:50:02,054 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 07:50:02,055 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 12 conjunts are in the unsatisfiable core [2022-12-14 07:50:02,057 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 07:50:02,110 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:50:02,110 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 07:50:02,262 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:50:02,262 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [501179588] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 07:50:02,262 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1076099316] [2022-12-14 07:50:02,264 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2022-12-14 07:50:02,265 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 07:50:02,265 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) [2022-12-14 07:50:02,265 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 07:50:02,265 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 22 [2022-12-14 07:50:02,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532402101] [2022-12-14 07:50:02,266 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 07:50:02,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-12-14 07:50:02,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:50:02,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-12-14 07:50:02,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=416, Unknown=0, NotChecked=0, Total=552 [2022-12-14 07:50:02,267 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) [2022-12-14 07:50:02,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:50:02,583 INFO L93 Difference]: Finished difference Result 187 states and 203 transitions. [2022-12-14 07:50:02,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-12-14 07:50:02,584 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 [2022-12-14 07:50:02,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:50:02,585 INFO L225 Difference]: With dead ends: 187 [2022-12-14 07:50:02,585 INFO L226 Difference]: Without dead ends: 155 [2022-12-14 07:50:02,586 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 234 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=389, Invalid=1017, Unknown=0, NotChecked=0, Total=1406 [2022-12-14 07:50:02,587 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 298 mSDsluCounter, 148 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s 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, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 07:50:02,587 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [300 Valid, 174 Invalid, 264 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 179 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 07:50:02,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2022-12-14 07:50:02,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 145. [2022-12-14 07:50:02,601 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) [2022-12-14 07:50:02,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 162 transitions. [2022-12-14 07:50:02,603 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 162 transitions. Word has length 25 [2022-12-14 07:50:02,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:50:02,603 INFO L495 AbstractCegarLoop]: Abstraction has 145 states and 162 transitions. [2022-12-14 07:50:02,603 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) [2022-12-14 07:50:02,603 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 162 transitions. [2022-12-14 07:50:02,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-12-14 07:50:02,604 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:50:02,604 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 5, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2022-12-14 07:50:02,609 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_487e50c6-1709-400a-bbb8-f596d5299fb1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-14 07:50:02,805 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_487e50c6-1709-400a-bbb8-f596d5299fb1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-12-14 07:50:02,806 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting idErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-12-14 07:50:02,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:50:02,808 INFO L85 PathProgramCache]: Analyzing trace with hash -506338079, now seen corresponding path program 1 times [2022-12-14 07:50:02,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:50:02,809 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145235015] [2022-12-14 07:50:02,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:50:02,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:50:02,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:50:02,922 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-12-14 07:50:02,922 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:50:02,922 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145235015] [2022-12-14 07:50:02,922 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1145235015] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 07:50:02,922 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [653396263] [2022-12-14 07:50:02,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:50:02,922 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 07:50:02,923 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_487e50c6-1709-400a-bbb8-f596d5299fb1/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 07:50:02,923 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_487e50c6-1709-400a-bbb8-f596d5299fb1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 07:50:02,924 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_487e50c6-1709-400a-bbb8-f596d5299fb1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-14 07:50:02,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:50:02,960 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 14 conjunts are in the unsatisfiable core [2022-12-14 07:50:02,962 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 07:50:03,090 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 3 proven. 60 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-14 07:50:03,090 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 07:50:03,362 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 3 proven. 61 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 07:50:03,363 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [653396263] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 07:50:03,363 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1733914611] [2022-12-14 07:50:03,365 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2022-12-14 07:50:03,365 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 07:50:03,366 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) [2022-12-14 07:50:03,366 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 07:50:03,366 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 14, 15] total 29 [2022-12-14 07:50:03,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070305551] [2022-12-14 07:50:03,366 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 07:50:03,367 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-12-14 07:50:03,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:50:03,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-12-14 07:50:03,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=676, Unknown=0, NotChecked=0, Total=812 [2022-12-14 07:50:03,368 INFO L87 Difference]: Start difference. First operand 145 states and 162 transitions. Second operand has 29 states, 27 states have (on average 2.4814814814814814) internal successors, (67), 21 states have internal predecessors, (67), 13 states have call successors, (14), 9 states have call predecessors, (14), 4 states have return successors, (6), 4 states have call predecessors, (6), 5 states have call successors, (6) [2022-12-14 07:50:03,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:50:03,762 INFO L93 Difference]: Finished difference Result 207 states and 226 transitions. [2022-12-14 07:50:03,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-12-14 07:50:03,763 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 27 states have (on average 2.4814814814814814) internal successors, (67), 21 states have internal predecessors, (67), 13 states have call successors, (14), 9 states have call predecessors, (14), 4 states have return successors, (6), 4 states have call predecessors, (6), 5 states have call successors, (6) Word has length 39 [2022-12-14 07:50:03,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:50:03,764 INFO L225 Difference]: With dead ends: 207 [2022-12-14 07:50:03,764 INFO L226 Difference]: Without dead ends: 141 [2022-12-14 07:50:03,769 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 60 SyntacticMatches, 2 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 316 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=316, Invalid=1406, Unknown=0, NotChecked=0, Total=1722 [2022-12-14 07:50:03,770 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 160 mSDsluCounter, 337 mSDsCounter, 0 mSdLazyCounter, 391 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 378 SdHoareTripleChecker+Invalid, 438 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 391 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 07:50:03,770 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [163 Valid, 378 Invalid, 438 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 391 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 07:50:03,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2022-12-14 07:50:03,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 133. [2022-12-14 07:50:03,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 106 states have (on average 1.1132075471698113) internal successors, (118), 105 states have internal predecessors, (118), 12 states have call successors, (12), 11 states have call predecessors, (12), 13 states have return successors, (16), 16 states have call predecessors, (16), 11 states have call successors, (16) [2022-12-14 07:50:03,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 146 transitions. [2022-12-14 07:50:03,784 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 146 transitions. Word has length 39 [2022-12-14 07:50:03,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:50:03,785 INFO L495 AbstractCegarLoop]: Abstraction has 133 states and 146 transitions. [2022-12-14 07:50:03,785 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 27 states have (on average 2.4814814814814814) internal successors, (67), 21 states have internal predecessors, (67), 13 states have call successors, (14), 9 states have call predecessors, (14), 4 states have return successors, (6), 4 states have call predecessors, (6), 5 states have call successors, (6) [2022-12-14 07:50:03,785 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 146 transitions. [2022-12-14 07:50:03,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-12-14 07:50:03,786 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:50:03,786 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 10, 10, 10, 1, 1, 1] [2022-12-14 07:50:03,791 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_487e50c6-1709-400a-bbb8-f596d5299fb1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-14 07:50:03,987 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_487e50c6-1709-400a-bbb8-f596d5299fb1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-12-14 07:50:03,987 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-12-14 07:50:03,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:50:03,988 INFO L85 PathProgramCache]: Analyzing trace with hash -1797304428, now seen corresponding path program 3 times [2022-12-14 07:50:03,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:50:03,988 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769318486] [2022-12-14 07:50:03,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:50:03,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:50:04,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:50:04,358 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 255 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:50:04,359 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:50:04,359 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1769318486] [2022-12-14 07:50:04,359 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1769318486] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 07:50:04,359 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [292028407] [2022-12-14 07:50:04,359 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-14 07:50:04,359 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 07:50:04,359 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_487e50c6-1709-400a-bbb8-f596d5299fb1/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 07:50:04,360 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_487e50c6-1709-400a-bbb8-f596d5299fb1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 07:50:04,361 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_487e50c6-1709-400a-bbb8-f596d5299fb1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-14 07:50:04,399 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-14 07:50:04,399 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 07:50:04,400 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 24 conjunts are in the unsatisfiable core [2022-12-14 07:50:04,403 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 07:50:04,473 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 255 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:50:04,473 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 07:50:04,876 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 255 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:50:04,876 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [292028407] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 07:50:04,876 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [912794676] [2022-12-14 07:50:04,878 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2022-12-14 07:50:04,878 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 07:50:04,878 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) [2022-12-14 07:50:04,878 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 07:50:04,879 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 46 [2022-12-14 07:50:04,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725961593] [2022-12-14 07:50:04,879 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 07:50:04,879 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-12-14 07:50:04,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:50:04,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-12-14 07:50:04,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=556, Invalid=1700, Unknown=0, NotChecked=0, Total=2256 [2022-12-14 07:50:04,882 INFO L87 Difference]: Start difference. First operand 133 states and 146 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) [2022-12-14 07:50:05,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:50:05,650 INFO L93 Difference]: Finished difference Result 437 states and 469 transitions. [2022-12-14 07:50:05,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2022-12-14 07:50:05,651 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 [2022-12-14 07:50:05,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:50:05,652 INFO L225 Difference]: With dead ends: 437 [2022-12-14 07:50:05,652 INFO L226 Difference]: Without dead ends: 385 [2022-12-14 07:50:05,654 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1269 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1742, Invalid=4578, Unknown=0, NotChecked=0, Total=6320 [2022-12-14 07:50:05,654 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 627 mSDsluCounter, 388 mSDsCounter, 0 mSdLazyCounter, 436 mSolverCounterSat, 172 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 629 SdHoareTripleChecker+Valid, 443 SdHoareTripleChecker+Invalid, 608 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 172 IncrementalHoareTripleChecker+Valid, 436 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 07:50:05,654 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [629 Valid, 443 Invalid, 608 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [172 Valid, 436 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 07:50:05,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 385 states. [2022-12-14 07:50:05,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 385 to 363. [2022-12-14 07:50:05,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 363 states, 290 states have (on average 1.1206896551724137) internal successors, (325), 289 states have internal predecessors, (325), 24 states have call successors, (24), 23 states have call predecessors, (24), 47 states have return successors, (50), 50 states have call predecessors, (50), 23 states have call successors, (50) [2022-12-14 07:50:05,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 363 states to 363 states and 399 transitions. [2022-12-14 07:50:05,669 INFO L78 Accepts]: Start accepts. Automaton has 363 states and 399 transitions. Word has length 55 [2022-12-14 07:50:05,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:50:05,669 INFO L495 AbstractCegarLoop]: Abstraction has 363 states and 399 transitions. [2022-12-14 07:50:05,669 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) [2022-12-14 07:50:05,669 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states and 399 transitions. [2022-12-14 07:50:05,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-12-14 07:50:05,670 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:50:05,670 INFO L195 NwaCegarLoop]: trace histogram [12, 11, 11, 11, 11, 3, 3, 3, 3, 2, 1, 1, 1, 1] [2022-12-14 07:50:05,675 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_487e50c6-1709-400a-bbb8-f596d5299fb1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-14 07:50:05,871 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_487e50c6-1709-400a-bbb8-f596d5299fb1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 07:50:05,872 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting idErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-12-14 07:50:05,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:50:05,874 INFO L85 PathProgramCache]: Analyzing trace with hash -1875709708, now seen corresponding path program 2 times [2022-12-14 07:50:05,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:50:05,874 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760366682] [2022-12-14 07:50:05,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:50:05,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:50:05,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:50:06,298 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 6 proven. 297 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-12-14 07:50:06,298 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:50:06,298 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [760366682] [2022-12-14 07:50:06,298 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [760366682] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 07:50:06,298 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1067431121] [2022-12-14 07:50:06,298 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 07:50:06,298 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 07:50:06,299 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_487e50c6-1709-400a-bbb8-f596d5299fb1/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 07:50:06,299 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_487e50c6-1709-400a-bbb8-f596d5299fb1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 07:50:06,300 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_487e50c6-1709-400a-bbb8-f596d5299fb1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-14 07:50:06,331 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-12-14 07:50:06,331 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 07:50:06,331 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-14 07:50:06,333 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 07:50:06,411 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 297 trivial. 0 not checked. [2022-12-14 07:50:06,411 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 07:50:06,586 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 297 trivial. 0 not checked. [2022-12-14 07:50:06,587 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1067431121] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 07:50:06,587 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [142146988] [2022-12-14 07:50:06,588 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2022-12-14 07:50:06,589 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 07:50:06,589 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) [2022-12-14 07:50:06,589 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 07:50:06,589 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 7, 7] total 37 [2022-12-14 07:50:06,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427555927] [2022-12-14 07:50:06,589 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 07:50:06,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-12-14 07:50:06,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:50:06,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-12-14 07:50:06,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=176, Invalid=1156, Unknown=0, NotChecked=0, Total=1332 [2022-12-14 07:50:06,592 INFO L87 Difference]: Start difference. First operand 363 states and 399 transitions. Second operand has 37 states, 36 states have (on average 2.361111111111111) internal successors, (85), 28 states have internal predecessors, (85), 12 states have call successors, (13), 10 states have call predecessors, (13), 9 states have return successors, (9), 9 states have call predecessors, (9), 3 states have call successors, (9) [2022-12-14 07:50:07,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:50:07,266 INFO L93 Difference]: Finished difference Result 720 states and 820 transitions. [2022-12-14 07:50:07,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-12-14 07:50:07,266 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 36 states have (on average 2.361111111111111) internal successors, (85), 28 states have internal predecessors, (85), 12 states have call successors, (13), 10 states have call predecessors, (13), 9 states have return successors, (9), 9 states have call predecessors, (9), 3 states have call successors, (9) Word has length 74 [2022-12-14 07:50:07,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:50:07,268 INFO L225 Difference]: With dead ends: 720 [2022-12-14 07:50:07,268 INFO L226 Difference]: Without dead ends: 664 [2022-12-14 07:50:07,270 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 918 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=561, Invalid=3995, Unknown=0, NotChecked=0, Total=4556 [2022-12-14 07:50:07,270 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 295 mSDsluCounter, 316 mSDsCounter, 0 mSdLazyCounter, 575 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 302 SdHoareTripleChecker+Valid, 350 SdHoareTripleChecker+Invalid, 641 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 575 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 07:50:07,270 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [302 Valid, 350 Invalid, 641 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 575 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 07:50:07,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 664 states. [2022-12-14 07:50:07,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 664 to 655. [2022-12-14 07:50:07,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 655 states, 526 states have (on average 1.064638783269962) internal successors, (560), 521 states have internal predecessors, (560), 24 states have call successors, (24), 23 states have call predecessors, (24), 103 states have return successors, (110), 110 states have call predecessors, (110), 23 states have call successors, (110) [2022-12-14 07:50:07,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 655 states to 655 states and 694 transitions. [2022-12-14 07:50:07,286 INFO L78 Accepts]: Start accepts. Automaton has 655 states and 694 transitions. Word has length 74 [2022-12-14 07:50:07,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:50:07,286 INFO L495 AbstractCegarLoop]: Abstraction has 655 states and 694 transitions. [2022-12-14 07:50:07,286 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 36 states have (on average 2.361111111111111) internal successors, (85), 28 states have internal predecessors, (85), 12 states have call successors, (13), 10 states have call predecessors, (13), 9 states have return successors, (9), 9 states have call predecessors, (9), 3 states have call successors, (9) [2022-12-14 07:50:07,286 INFO L276 IsEmpty]: Start isEmpty. Operand 655 states and 694 transitions. [2022-12-14 07:50:07,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-12-14 07:50:07,288 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:50:07,288 INFO L195 NwaCegarLoop]: trace histogram [13, 12, 12, 12, 12, 7, 7, 7, 7, 6, 1, 1, 1, 1] [2022-12-14 07:50:07,293 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_487e50c6-1709-400a-bbb8-f596d5299fb1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-14 07:50:07,489 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_487e50c6-1709-400a-bbb8-f596d5299fb1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 07:50:07,490 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting idErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-12-14 07:50:07,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:50:07,492 INFO L85 PathProgramCache]: Analyzing trace with hash 1873920279, now seen corresponding path program 3 times [2022-12-14 07:50:07,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:50:07,492 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767406998] [2022-12-14 07:50:07,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:50:07,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:50:07,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:50:07,811 INFO L134 CoverageAnalysis]: Checked inductivity of 459 backedges. 18 proven. 354 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2022-12-14 07:50:07,811 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:50:07,811 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767406998] [2022-12-14 07:50:07,811 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1767406998] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 07:50:07,811 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1332531909] [2022-12-14 07:50:07,811 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-14 07:50:07,811 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 07:50:07,811 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_487e50c6-1709-400a-bbb8-f596d5299fb1/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 07:50:07,812 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_487e50c6-1709-400a-bbb8-f596d5299fb1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 07:50:07,813 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_487e50c6-1709-400a-bbb8-f596d5299fb1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-14 07:50:07,854 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-14 07:50:07,854 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 07:50:07,855 INFO L263 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 28 conjunts are in the unsatisfiable core [2022-12-14 07:50:07,858 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 07:50:07,948 INFO L134 CoverageAnalysis]: Checked inductivity of 459 backedges. 18 proven. 354 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2022-12-14 07:50:07,948 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 07:50:09,118 INFO L134 CoverageAnalysis]: Checked inductivity of 459 backedges. 18 proven. 420 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-12-14 07:50:09,118 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1332531909] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 07:50:09,118 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [679064269] [2022-12-14 07:50:09,120 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2022-12-14 07:50:09,120 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 07:50:09,120 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) [2022-12-14 07:50:09,121 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 07:50:09,121 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 29] total 43 [2022-12-14 07:50:09,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404907332] [2022-12-14 07:50:09,121 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 07:50:09,122 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-12-14 07:50:09,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:50:09,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-12-14 07:50:09,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=356, Invalid=1450, Unknown=0, NotChecked=0, Total=1806 [2022-12-14 07:50:09,124 INFO L87 Difference]: Start difference. First operand 655 states and 694 transitions. Second operand has 43 states, 41 states have (on average 2.658536585365854) internal successors, (109), 30 states have internal predecessors, (109), 21 states have call successors, (21), 13 states have call predecessors, (21), 7 states have return successors, (14), 7 states have call predecessors, (14), 9 states have call successors, (14) [2022-12-14 07:50:09,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:50:09,456 INFO L93 Difference]: Finished difference Result 748 states and 786 transitions. [2022-12-14 07:50:09,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-12-14 07:50:09,456 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 41 states have (on average 2.658536585365854) internal successors, (109), 30 states have internal predecessors, (109), 21 states have call successors, (21), 13 states have call predecessors, (21), 7 states have return successors, (14), 7 states have call predecessors, (14), 9 states have call successors, (14) Word has length 99 [2022-12-14 07:50:09,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:50:09,458 INFO L225 Difference]: With dead ends: 748 [2022-12-14 07:50:09,458 INFO L226 Difference]: Without dead ends: 477 [2022-12-14 07:50:09,459 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 177 SyntacticMatches, 7 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 927 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=817, Invalid=2965, Unknown=0, NotChecked=0, Total=3782 [2022-12-14 07:50:09,460 INFO L413 NwaCegarLoop]: 65 mSDtfsCounter, 348 mSDsluCounter, 547 mSDsCounter, 0 mSdLazyCounter, 305 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 356 SdHoareTripleChecker+Valid, 612 SdHoareTripleChecker+Invalid, 406 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 305 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 07:50:09,460 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [356 Valid, 612 Invalid, 406 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 305 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 07:50:09,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 477 states. [2022-12-14 07:50:09,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 477 to 445. [2022-12-14 07:50:09,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 445 states, 358 states have (on average 1.0754189944134078) internal successors, (385), 353 states have internal predecessors, (385), 24 states have call successors, (24), 23 states have call predecessors, (24), 61 states have return successors, (68), 68 states have call predecessors, (68), 23 states have call successors, (68) [2022-12-14 07:50:09,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 445 states to 445 states and 477 transitions. [2022-12-14 07:50:09,471 INFO L78 Accepts]: Start accepts. Automaton has 445 states and 477 transitions. Word has length 99 [2022-12-14 07:50:09,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:50:09,471 INFO L495 AbstractCegarLoop]: Abstraction has 445 states and 477 transitions. [2022-12-14 07:50:09,471 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 41 states have (on average 2.658536585365854) internal successors, (109), 30 states have internal predecessors, (109), 21 states have call successors, (21), 13 states have call predecessors, (21), 7 states have return successors, (14), 7 states have call predecessors, (14), 9 states have call successors, (14) [2022-12-14 07:50:09,472 INFO L276 IsEmpty]: Start isEmpty. Operand 445 states and 477 transitions. [2022-12-14 07:50:09,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-12-14 07:50:09,472 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:50:09,473 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 22, 22, 22, 1, 1, 1] [2022-12-14 07:50:09,477 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_487e50c6-1709-400a-bbb8-f596d5299fb1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-12-14 07:50:09,673 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_487e50c6-1709-400a-bbb8-f596d5299fb1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-12-14 07:50:09,673 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-12-14 07:50:09,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:50:09,674 INFO L85 PathProgramCache]: Analyzing trace with hash -1122935724, now seen corresponding path program 4 times [2022-12-14 07:50:09,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:50:09,674 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1231845536] [2022-12-14 07:50:09,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:50:09,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:50:09,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:50:10,387 INFO L134 CoverageAnalysis]: Checked inductivity of 1221 backedges. 0 proven. 1221 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:50:10,387 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:50:10,387 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1231845536] [2022-12-14 07:50:10,388 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1231845536] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 07:50:10,388 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [575883190] [2022-12-14 07:50:10,388 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-12-14 07:50:10,388 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 07:50:10,388 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_487e50c6-1709-400a-bbb8-f596d5299fb1/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 07:50:10,389 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_487e50c6-1709-400a-bbb8-f596d5299fb1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 07:50:10,390 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_487e50c6-1709-400a-bbb8-f596d5299fb1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-14 07:50:10,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:50:10,446 INFO L263 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 48 conjunts are in the unsatisfiable core [2022-12-14 07:50:10,448 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 07:50:10,566 INFO L134 CoverageAnalysis]: Checked inductivity of 1221 backedges. 0 proven. 1221 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:50:10,566 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 07:50:11,989 INFO L134 CoverageAnalysis]: Checked inductivity of 1221 backedges. 0 proven. 1221 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:50:11,990 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [575883190] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 07:50:11,990 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [884078570] [2022-12-14 07:50:11,991 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2022-12-14 07:50:11,991 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 07:50:11,991 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) [2022-12-14 07:50:11,991 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 07:50:11,991 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47, 47] total 94 [2022-12-14 07:50:11,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753636213] [2022-12-14 07:50:11,992 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 07:50:11,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2022-12-14 07:50:11,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:50:11,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2022-12-14 07:50:11,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2260, Invalid=6860, Unknown=0, NotChecked=0, Total=9120 [2022-12-14 07:50:11,995 INFO L87 Difference]: Start difference. First operand 445 states and 477 transitions. Second operand has 96 states, 93 states have (on average 1.978494623655914) internal successors, (184), 49 states have internal predecessors, (184), 46 states have call successors, (46), 46 states have call predecessors, (46), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:50:12,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:50:12,651 INFO L93 Difference]: Finished difference Result 531 states and 554 transitions. [2022-12-14 07:50:12,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-12-14 07:50:12,652 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 93 states have (on average 1.978494623655914) internal successors, (184), 49 states have internal predecessors, (184), 46 states have call successors, (46), 46 states have call predecessors, (46), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2022-12-14 07:50:12,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:50:12,654 INFO L225 Difference]: With dead ends: 531 [2022-12-14 07:50:12,654 INFO L226 Difference]: Without dead ends: 434 [2022-12-14 07:50:12,658 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 297 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2873 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=4100, Invalid=9706, Unknown=0, NotChecked=0, Total=13806 [2022-12-14 07:50:12,658 INFO L413 NwaCegarLoop]: 95 mSDtfsCounter, 581 mSDsluCounter, 650 mSDsCounter, 0 mSdLazyCounter, 414 mSolverCounterSat, 175 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 581 SdHoareTripleChecker+Valid, 745 SdHoareTripleChecker+Invalid, 589 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 175 IncrementalHoareTripleChecker+Valid, 414 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 07:50:12,659 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [581 Valid, 745 Invalid, 589 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [175 Valid, 414 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 07:50:12,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2022-12-14 07:50:12,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 414. [2022-12-14 07:50:12,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 414 states, 334 states have (on average 1.0748502994011977) internal successors, (359), 328 states have internal predecessors, (359), 24 states have call successors, (24), 23 states have call predecessors, (24), 55 states have return successors, (62), 62 states have call predecessors, (62), 23 states have call successors, (62) [2022-12-14 07:50:12,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 414 states to 414 states and 445 transitions. [2022-12-14 07:50:12,669 INFO L78 Accepts]: Start accepts. Automaton has 414 states and 445 transitions. Word has length 115 [2022-12-14 07:50:12,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:50:12,670 INFO L495 AbstractCegarLoop]: Abstraction has 414 states and 445 transitions. [2022-12-14 07:50:12,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 93 states have (on average 1.978494623655914) internal successors, (184), 49 states have internal predecessors, (184), 46 states have call successors, (46), 46 states have call predecessors, (46), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:50:12,670 INFO L276 IsEmpty]: Start isEmpty. Operand 414 states and 445 transitions. [2022-12-14 07:50:12,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-12-14 07:50:12,672 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:50:12,672 INFO L195 NwaCegarLoop]: trace histogram [21, 20, 20, 20, 20, 7, 7, 7, 7, 6, 1, 1, 1, 1] [2022-12-14 07:50:12,677 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_487e50c6-1709-400a-bbb8-f596d5299fb1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-12-14 07:50:12,872 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_487e50c6-1709-400a-bbb8-f596d5299fb1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-12-14 07:50:12,873 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting idErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-12-14 07:50:12,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:50:12,873 INFO L85 PathProgramCache]: Analyzing trace with hash -1616926313, now seen corresponding path program 4 times [2022-12-14 07:50:12,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:50:12,873 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1473613534] [2022-12-14 07:50:12,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:50:12,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:50:12,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:50:13,055 INFO L134 CoverageAnalysis]: Checked inductivity of 1095 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 990 trivial. 0 not checked. [2022-12-14 07:50:13,055 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:50:13,055 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1473613534] [2022-12-14 07:50:13,055 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1473613534] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 07:50:13,055 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1938230886] [2022-12-14 07:50:13,055 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-12-14 07:50:13,056 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 07:50:13,056 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_487e50c6-1709-400a-bbb8-f596d5299fb1/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 07:50:13,057 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_487e50c6-1709-400a-bbb8-f596d5299fb1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 07:50:13,058 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_487e50c6-1709-400a-bbb8-f596d5299fb1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-12-14 07:50:13,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:50:13,122 INFO L263 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 15 conjunts are in the unsatisfiable core [2022-12-14 07:50:13,125 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 07:50:13,167 INFO L134 CoverageAnalysis]: Checked inductivity of 1095 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 990 trivial. 0 not checked. [2022-12-14 07:50:13,168 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 07:50:14,077 INFO L134 CoverageAnalysis]: Checked inductivity of 1095 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 990 trivial. 0 not checked. [2022-12-14 07:50:14,077 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1938230886] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 07:50:14,077 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1430884585] [2022-12-14 07:50:14,079 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2022-12-14 07:50:14,079 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 07:50:14,079 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) [2022-12-14 07:50:14,080 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 07:50:14,080 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 31 [2022-12-14 07:50:14,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271827828] [2022-12-14 07:50:14,080 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 07:50:14,081 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-12-14 07:50:14,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:50:14,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-12-14 07:50:14,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=271, Invalid=721, Unknown=0, NotChecked=0, Total=992 [2022-12-14 07:50:14,082 INFO L87 Difference]: Start difference. First operand 414 states and 445 transitions. Second operand has 32 states, 31 states have (on average 2.193548387096774) internal successors, (68), 32 states have internal predecessors, (68), 1 states have call successors, (2), 1 states have call predecessors, (2), 15 states have return successors, (15), 15 states have call predecessors, (15), 1 states have call successors, (15) [2022-12-14 07:50:14,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:50:14,152 INFO L93 Difference]: Finished difference Result 939 states and 1085 transitions. [2022-12-14 07:50:14,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-12-14 07:50:14,153 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 2.193548387096774) internal successors, (68), 32 states have internal predecessors, (68), 1 states have call successors, (2), 1 states have call predecessors, (2), 15 states have return successors, (15), 15 states have call predecessors, (15), 1 states have call successors, (15) Word has length 139 [2022-12-14 07:50:14,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:50:14,156 INFO L225 Difference]: With dead ends: 939 [2022-12-14 07:50:14,156 INFO L226 Difference]: Without dead ends: 938 [2022-12-14 07:50:14,157 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 291 GetRequests, 261 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 295 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=271, Invalid=721, Unknown=0, NotChecked=0, Total=992 [2022-12-14 07:50:14,158 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 0 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 07:50:14,158 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 62 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 07:50:14,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 938 states. [2022-12-14 07:50:14,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 938 to 938. [2022-12-14 07:50:14,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 938 states, 758 states have (on average 1.0329815303430079) internal successors, (783), 744 states have internal predecessors, (783), 24 states have call successors, (24), 23 states have call predecessors, (24), 155 states have return successors, (170), 170 states have call predecessors, (170), 23 states have call successors, (170) [2022-12-14 07:50:14,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 938 states to 938 states and 977 transitions. [2022-12-14 07:50:14,188 INFO L78 Accepts]: Start accepts. Automaton has 938 states and 977 transitions. Word has length 139 [2022-12-14 07:50:14,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:50:14,189 INFO L495 AbstractCegarLoop]: Abstraction has 938 states and 977 transitions. [2022-12-14 07:50:14,189 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 2.193548387096774) internal successors, (68), 32 states have internal predecessors, (68), 1 states have call successors, (2), 1 states have call predecessors, (2), 15 states have return successors, (15), 15 states have call predecessors, (15), 1 states have call successors, (15) [2022-12-14 07:50:14,189 INFO L276 IsEmpty]: Start isEmpty. Operand 938 states and 977 transitions. [2022-12-14 07:50:14,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-12-14 07:50:14,192 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:50:14,192 INFO L195 NwaCegarLoop]: trace histogram [21, 20, 20, 20, 20, 15, 15, 15, 15, 14, 1, 1, 1, 1] [2022-12-14 07:50:14,197 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_487e50c6-1709-400a-bbb8-f596d5299fb1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-12-14 07:50:14,393 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_487e50c6-1709-400a-bbb8-f596d5299fb1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-12-14 07:50:14,393 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting idErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-12-14 07:50:14,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:50:14,393 INFO L85 PathProgramCache]: Analyzing trace with hash 91384599, now seen corresponding path program 5 times [2022-12-14 07:50:14,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:50:14,394 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180032879] [2022-12-14 07:50:14,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:50:14,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:50:14,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:50:14,851 INFO L134 CoverageAnalysis]: Checked inductivity of 1515 backedges. 0 proven. 525 refuted. 0 times theorem prover too weak. 990 trivial. 0 not checked. [2022-12-14 07:50:14,851 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:50:14,851 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180032879] [2022-12-14 07:50:14,851 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [180032879] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 07:50:14,852 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [725375665] [2022-12-14 07:50:14,852 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 07:50:14,852 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 07:50:14,852 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_487e50c6-1709-400a-bbb8-f596d5299fb1/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 07:50:14,852 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_487e50c6-1709-400a-bbb8-f596d5299fb1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 07:50:14,853 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_487e50c6-1709-400a-bbb8-f596d5299fb1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-12-14 07:50:14,934 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) [2022-12-14 07:50:14,934 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 07:50:14,936 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 31 conjunts are in the unsatisfiable core [2022-12-14 07:50:14,938 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 07:50:15,014 INFO L134 CoverageAnalysis]: Checked inductivity of 1515 backedges. 0 proven. 525 refuted. 0 times theorem prover too weak. 990 trivial. 0 not checked. [2022-12-14 07:50:15,014 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 07:50:22,052 INFO L134 CoverageAnalysis]: Checked inductivity of 1515 backedges. 0 proven. 525 refuted. 0 times theorem prover too weak. 990 trivial. 0 not checked. [2022-12-14 07:50:22,052 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [725375665] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 07:50:22,052 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1574556119] [2022-12-14 07:50:22,053 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2022-12-14 07:50:22,053 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 07:50:22,054 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) [2022-12-14 07:50:22,054 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 07:50:22,054 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31, 31] total 63 [2022-12-14 07:50:22,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489879567] [2022-12-14 07:50:22,054 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 07:50:22,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2022-12-14 07:50:22,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:50:22,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2022-12-14 07:50:22,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1055, Invalid=2977, Unknown=0, NotChecked=0, Total=4032 [2022-12-14 07:50:22,056 INFO L87 Difference]: Start difference. First operand 938 states and 977 transitions. Second operand has 64 states, 63 states have (on average 2.0952380952380953) internal successors, (132), 64 states have internal predecessors, (132), 1 states have call successors, (2), 1 states have call predecessors, (2), 31 states have return successors, (31), 31 states have call predecessors, (31), 1 states have call successors, (31) [2022-12-14 07:50:22,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:50:22,168 INFO L93 Difference]: Finished difference Result 2672 states and 3068 transitions. [2022-12-14 07:50:22,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2022-12-14 07:50:22,169 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 63 states have (on average 2.0952380952380953) internal successors, (132), 64 states have internal predecessors, (132), 1 states have call successors, (2), 1 states have call predecessors, (2), 31 states have return successors, (31), 31 states have call predecessors, (31), 1 states have call successors, (31) Word has length 179 [2022-12-14 07:50:22,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:50:22,172 INFO L225 Difference]: With dead ends: 2672 [2022-12-14 07:50:22,172 INFO L226 Difference]: Without dead ends: 1494 [2022-12-14 07:50:22,174 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 387 GetRequests, 325 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1239 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=1055, Invalid=2977, Unknown=0, NotChecked=0, Total=4032 [2022-12-14 07:50:22,175 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 0 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 07:50:22,176 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 108 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 07:50:22,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1494 states. [2022-12-14 07:50:22,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1494 to 1494. [2022-12-14 07:50:22,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1494 states, 1207 states have (on average 1.0190555095277547) internal successors, (1230), 1186 states have internal predecessors, (1230), 24 states have call successors, (24), 23 states have call predecessors, (24), 262 states have return successors, (284), 284 states have call predecessors, (284), 23 states have call successors, (284) [2022-12-14 07:50:22,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1494 states to 1494 states and 1538 transitions. [2022-12-14 07:50:22,208 INFO L78 Accepts]: Start accepts. Automaton has 1494 states and 1538 transitions. Word has length 179 [2022-12-14 07:50:22,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:50:22,209 INFO L495 AbstractCegarLoop]: Abstraction has 1494 states and 1538 transitions. [2022-12-14 07:50:22,209 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 63 states have (on average 2.0952380952380953) internal successors, (132), 64 states have internal predecessors, (132), 1 states have call successors, (2), 1 states have call predecessors, (2), 31 states have return successors, (31), 31 states have call predecessors, (31), 1 states have call successors, (31) [2022-12-14 07:50:22,209 INFO L276 IsEmpty]: Start isEmpty. Operand 1494 states and 1538 transitions. [2022-12-14 07:50:22,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 430 [2022-12-14 07:50:22,216 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:50:22,216 INFO L195 NwaCegarLoop]: trace histogram [55, 54, 54, 54, 54, 31, 31, 31, 31, 30, 1, 1, 1, 1] [2022-12-14 07:50:22,222 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_487e50c6-1709-400a-bbb8-f596d5299fb1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-12-14 07:50:22,417 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_487e50c6-1709-400a-bbb8-f596d5299fb1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-12-14 07:50:22,417 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting idErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-12-14 07:50:22,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:50:22,418 INFO L85 PathProgramCache]: Analyzing trace with hash 669926967, now seen corresponding path program 6 times [2022-12-14 07:50:22,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:50:22,418 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849068166] [2022-12-14 07:50:22,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:50:22,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:50:22,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:50:24,430 INFO L134 CoverageAnalysis]: Checked inductivity of 9588 backedges. 0 proven. 2325 refuted. 0 times theorem prover too weak. 7263 trivial. 0 not checked. [2022-12-14 07:50:24,431 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:50:24,431 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849068166] [2022-12-14 07:50:24,431 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [849068166] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 07:50:24,431 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1141836044] [2022-12-14 07:50:24,431 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-14 07:50:24,431 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 07:50:24,431 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_487e50c6-1709-400a-bbb8-f596d5299fb1/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 07:50:24,432 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_487e50c6-1709-400a-bbb8-f596d5299fb1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 07:50:24,433 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_487e50c6-1709-400a-bbb8-f596d5299fb1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-12-14 07:50:24,630 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-14 07:50:24,631 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 07:50:24,634 INFO L263 TraceCheckSpWp]: Trace formula consists of 800 conjuncts, 112 conjunts are in the unsatisfiable core [2022-12-14 07:50:24,639 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 07:50:27,244 INFO L134 CoverageAnalysis]: Checked inductivity of 9588 backedges. 3705 proven. 3648 refuted. 0 times theorem prover too weak. 2235 trivial. 0 not checked. [2022-12-14 07:50:27,244 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 07:51:57,584 INFO L134 CoverageAnalysis]: Checked inductivity of 9588 backedges. 3705 proven. 5418 refuted. 0 times theorem prover too weak. 465 trivial. 0 not checked. [2022-12-14 07:51:57,584 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1141836044] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 07:51:57,584 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [349330929] [2022-12-14 07:51:57,585 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2022-12-14 07:51:57,585 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 07:51:57,585 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) [2022-12-14 07:51:57,586 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 07:51:57,586 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [63, 83, 113] total 225 [2022-12-14 07:51:57,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781630655] [2022-12-14 07:51:57,586 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 07:51:57,587 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 225 states [2022-12-14 07:51:57,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:51:57,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 225 interpolants. [2022-12-14 07:51:57,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5139, Invalid=45261, Unknown=0, NotChecked=0, Total=50400 [2022-12-14 07:51:57,593 INFO L87 Difference]: Start difference. First operand 1494 states and 1538 transitions. Second operand has 225 states, 223 states have (on average 2.57847533632287) internal successors, (575), 177 states have internal predecessors, (575), 82 states have call successors, (83), 49 states have call predecessors, (83), 62 states have return successors, (93), 62 states have call predecessors, (93), 34 states have call successors, (93) [2022-12-14 07:51:58,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:51:58,977 INFO L93 Difference]: Finished difference Result 1494 states and 1538 transitions. [2022-12-14 07:51:58,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-12-14 07:51:58,978 INFO L78 Accepts]: Start accepts. Automaton has has 225 states, 223 states have (on average 2.57847533632287) internal successors, (575), 177 states have internal predecessors, (575), 82 states have call successors, (83), 49 states have call predecessors, (83), 62 states have return successors, (93), 62 states have call predecessors, (93), 34 states have call successors, (93) Word has length 429 [2022-12-14 07:51:58,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:51:58,979 INFO L225 Difference]: With dead ends: 1494 [2022-12-14 07:51:58,979 INFO L226 Difference]: Without dead ends: 0 [2022-12-14 07:51:58,984 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 943 GetRequests, 665 SyntacticMatches, 31 SemanticMatches, 247 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28719 ImplicationChecksByTransitivity, 7.8s TimeCoverageRelationStatistics Valid=7982, Invalid=53770, Unknown=0, NotChecked=0, Total=61752 [2022-12-14 07:51:58,984 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 100 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3062 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 3064 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 3062 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-12-14 07:51:58,985 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 24 Invalid, 3064 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 3062 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-12-14 07:51:58,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-12-14 07:51:58,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-12-14 07:51:58,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:51:58,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-12-14 07:51:58,985 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 429 [2022-12-14 07:51:58,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:51:58,985 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-12-14 07:51:58,986 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 225 states, 223 states have (on average 2.57847533632287) internal successors, (575), 177 states have internal predecessors, (575), 82 states have call successors, (83), 49 states have call predecessors, (83), 62 states have return successors, (93), 62 states have call predecessors, (93), 34 states have call successors, (93) [2022-12-14 07:51:58,986 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-12-14 07:51:58,986 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-12-14 07:51:58,988 INFO L805 garLoopResultBuilder]: Registering result SAFE for location idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 4 remaining) [2022-12-14 07:51:58,988 INFO L805 garLoopResultBuilder]: Registering result SAFE for location idErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 4 remaining) [2022-12-14 07:51:58,988 INFO L805 garLoopResultBuilder]: Registering result SAFE for location idErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 4 remaining) [2022-12-14 07:51:58,988 INFO L805 garLoopResultBuilder]: Registering result SAFE for location idErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 4 remaining) [2022-12-14 07:51:58,995 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_487e50c6-1709-400a-bbb8-f596d5299fb1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2022-12-14 07:51:59,189 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_487e50c6-1709-400a-bbb8-f596d5299fb1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-12-14 07:51:59,194 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-12-14 07:51:59,823 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-12-14 07:51:59,823 INFO L895 garLoopResultBuilder]: At program point L13(line 13) the Hoare annotation is: (and (<= 20 |ULTIMATE.start_main_~input~0#1|) (<= |ULTIMATE.start_main_~input~0#1| 20)) [2022-12-14 07:51:59,823 INFO L899 garLoopResultBuilder]: For program point L13-1(line 13) no Hoare annotation was computed. [2022-12-14 07:51:59,823 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2022-12-14 07:51:59,823 INFO L899 garLoopResultBuilder]: For program point idErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 8) no Hoare annotation was computed. [2022-12-14 07:51:59,823 INFO L899 garLoopResultBuilder]: For program point idErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 8) no Hoare annotation was computed. [2022-12-14 07:51:59,823 INFO L899 garLoopResultBuilder]: For program point idFINAL(lines 6 9) no Hoare annotation was computed. [2022-12-14 07:51:59,823 INFO L899 garLoopResultBuilder]: For program point idEXIT(lines 6 9) no Hoare annotation was computed. [2022-12-14 07:51:59,824 INFO L899 garLoopResultBuilder]: For program point idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 8) no Hoare annotation was computed. [2022-12-14 07:51:59,824 INFO L899 garLoopResultBuilder]: For program point idErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 8) no Hoare annotation was computed. [2022-12-14 07:51:59,824 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 6 9) the Hoare annotation is: true [2022-12-14 07:51:59,824 INFO L899 garLoopResultBuilder]: For program point L8(line 8) no Hoare annotation was computed. [2022-12-14 07:51:59,824 INFO L899 garLoopResultBuilder]: For program point L7(line 7) no Hoare annotation was computed. [2022-12-14 07:51:59,824 INFO L899 garLoopResultBuilder]: For program point L8-1(line 8) no Hoare annotation was computed. [2022-12-14 07:51:59,824 INFO L895 garLoopResultBuilder]: At program point L8-2(line 8) the Hoare annotation is: (let ((.cse1 (<= id_~x |id_#in~x|)) (.cse0 (not (<= |id_#in~x| 20))) (.cse2 (<= |id_#in~x| id_~x))) (and (or (not (<= 9 |id_#in~x|)) .cse0 (<= 9 id_~x)) (or (not (<= |id_#in~x| 7)) (<= 7 id_~x) (not (<= 7 |id_#in~x|))) (or (not (<= |id_#in~x| 1)) (and .cse1 (<= 1 id_~x)) (not (<= 1 |id_#in~x|))) (or (not (<= |id_#in~x| 0)) (not (<= 0 |id_#in~x|))) (or (not (<= 2 |id_#in~x|)) (and .cse1 .cse2) (not (<= |id_#in~x| 2))) (or (and .cse1 (<= 4 id_~x)) (not (<= 4 |id_#in~x|)) .cse0) (or (<= 11 id_~x) (not (<= 11 |id_#in~x|)) (not (<= |id_#in~x| 11))) (or (not (<= 8 |id_#in~x|)) (not (<= |id_#in~x| 8)) (<= 8 id_~x)) (or (and .cse1 (<= 3 id_~x)) (not (<= 3 |id_#in~x|)) (not (<= |id_#in~x| 3))) (or (not (<= 13 |id_#in~x|)) (<= 13 id_~x) (not (<= |id_#in~x| 13))) (or .cse2 .cse0 (not (<= 18 |id_#in~x|))) (or (not (<= 10 |id_#in~x|)) (<= 10 id_~x) (not (<= |id_#in~x| 10))) (or (not (<= 16 |id_#in~x|)) .cse0 (<= 16 id_~x)) (or .cse2 (not (<= |id_#in~x| 14)) (not (<= 14 |id_#in~x|))) (or (not (<= |id_#in~x| 17)) (not (<= 17 |id_#in~x|)) (<= 17 id_~x)) (or (<= 12 id_~x) (not (<= |id_#in~x| 12)) (not (<= 12 |id_#in~x|))) (or (not (<= 5 |id_#in~x|)) (not (<= |id_#in~x| 5)) (<= 5 id_~x)) (or (<= 6 id_~x) (not (<= |id_#in~x| 6)) (not (<= 6 |id_#in~x|))) (or (<= 15 id_~x) (not (<= |id_#in~x| 15)) (not (<= 15 |id_#in~x|))))) [2022-12-14 07:51:59,824 INFO L899 garLoopResultBuilder]: For program point L8-3(line 8) no Hoare annotation was computed. [2022-12-14 07:51:59,824 INFO L899 garLoopResultBuilder]: For program point L8-4(line 8) no Hoare annotation was computed. [2022-12-14 07:51:59,824 INFO L899 garLoopResultBuilder]: For program point L8-5(line 8) no Hoare annotation was computed. [2022-12-14 07:51:59,827 INFO L445 BasicCegarLoop]: Path program histogram: [6, 4, 1, 1, 1, 1] [2022-12-14 07:51:59,828 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-14 07:51:59,830 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.12 07:51:59 BoogieIcfgContainer [2022-12-14 07:51:59,830 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-14 07:51:59,830 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-14 07:51:59,831 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-14 07:51:59,831 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-14 07:51:59,831 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 07:50:00" (3/4) ... [2022-12-14 07:51:59,833 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-12-14 07:51:59,837 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure id [2022-12-14 07:51:59,839 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2022-12-14 07:51:59,839 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2022-12-14 07:51:59,839 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2022-12-14 07:51:59,839 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-12-14 07:51:59,858 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_487e50c6-1709-400a-bbb8-f596d5299fb1/bin/utaipan-gh47qXpMRh/witness.graphml [2022-12-14 07:51:59,858 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-14 07:51:59,858 INFO L158 Benchmark]: Toolchain (without parser) took 119650.06ms. Allocated memory was 121.6MB in the beginning and 297.8MB in the end (delta: 176.2MB). Free memory was 91.4MB in the beginning and 183.7MB in the end (delta: -92.3MB). Peak memory consumption was 85.8MB. Max. memory is 16.1GB. [2022-12-14 07:51:59,858 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 121.6MB. Free memory is still 89.9MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 07:51:59,859 INFO L158 Benchmark]: CACSL2BoogieTranslator took 147.74ms. Allocated memory is still 121.6MB. Free memory was 91.4MB in the beginning and 81.6MB in the end (delta: 9.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-12-14 07:51:59,859 INFO L158 Benchmark]: Boogie Procedure Inliner took 22.63ms. Allocated memory is still 121.6MB. Free memory was 81.6MB in the beginning and 80.3MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 07:51:59,859 INFO L158 Benchmark]: Boogie Preprocessor took 13.86ms. Allocated memory is still 121.6MB. Free memory was 80.3MB in the beginning and 79.2MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 07:51:59,859 INFO L158 Benchmark]: RCFGBuilder took 230.46ms. Allocated memory is still 121.6MB. Free memory was 79.2MB in the beginning and 69.2MB in the end (delta: 10.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-12-14 07:51:59,860 INFO L158 Benchmark]: TraceAbstraction took 119202.82ms. Allocated memory was 121.6MB in the beginning and 297.8MB in the end (delta: 176.2MB). Free memory was 68.5MB in the beginning and 186.9MB in the end (delta: -118.4MB). Peak memory consumption was 182.3MB. Max. memory is 16.1GB. [2022-12-14 07:51:59,860 INFO L158 Benchmark]: Witness Printer took 27.21ms. Allocated memory is still 297.8MB. Free memory was 186.9MB in the beginning and 183.7MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 07:51:59,861 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 121.6MB. Free memory is still 89.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 147.74ms. Allocated memory is still 121.6MB. Free memory was 91.4MB in the beginning and 81.6MB in the end (delta: 9.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 22.63ms. Allocated memory is still 121.6MB. Free memory was 81.6MB in the beginning and 80.3MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 13.86ms. Allocated memory is still 121.6MB. Free memory was 80.3MB in the beginning and 79.2MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 230.46ms. Allocated memory is still 121.6MB. Free memory was 79.2MB in the beginning and 69.2MB in the end (delta: 10.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 119202.82ms. Allocated memory was 121.6MB in the beginning and 297.8MB in the end (delta: 176.2MB). Free memory was 68.5MB in the beginning and 186.9MB in the end (delta: -118.4MB). Peak memory consumption was 182.3MB. Max. memory is 16.1GB. * Witness Printer took 27.21ms. Allocated memory is still 297.8MB. Free memory was 186.9MB in the beginning and 183.7MB in the end (delta: 3.1MB). 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: 119.1s, OverallIterations: 14, TraceHistogramMax: 55, PathProgramHistogramMax: 6, EmptinessCheckTime: 0.0s, AutomataDifference: 5.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.6s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2605 SdHoareTripleChecker+Valid, 2.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2580 mSDsluCounter, 3082 SdHoareTripleChecker+Invalid, 1.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2664 mSDsCounter, 686 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 5753 IncrementalHoareTripleChecker+Invalid, 6439 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 686 mSolverCounterUnsat, 418 mSDtfsCounter, 5753 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2754 GetRequests, 1953 SyntacticMatches, 40 SemanticMatches, 761 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36817 ImplicationChecksByTransitivity, 13.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1494occurred in iteration=13, InterpolantAutomatonStates: 412, 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, 14 MinimizatonAttempts, 116 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 49 PreInvPairs, 49 NumberOfFragments, 250 HoareAnnotationTreeSize, 49 FomulaSimplifications, 665 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 1164 FormulaSimplificationTreeSizeReductionInter, 0.6s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 110.0s InterpolantComputationTime, 2380 NumberOfCodeBlocks, 2305 NumberOfCodeBlocksAsserted, 47 NumberOfCheckSat, 3510 ConstructedInterpolants, 0 QuantifiedInterpolants, 9237 SizeOfPredicates, 115 NumberOfNonLiveVariables, 2231 ConjunctsInSsa, 297 ConjunctsInUnsatCore, 34 InterpolantComputations, 4 PerfectInterpolantSequences, 24262/43687 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! [2022-12-14 07:51:59,892 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_487e50c6-1709-400a-bbb8-f596d5299fb1/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE