./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_61-invariant_racing.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version b5237d83 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_f5c2a3d7-9126-4483-b09f-3ba286dc2d36/bin/utaipan-g80aRyZoba/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5c2a3d7-9126-4483-b09f-3ba286dc2d36/bin/utaipan-g80aRyZoba/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5c2a3d7-9126-4483-b09f-3ba286dc2d36/bin/utaipan-g80aRyZoba/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5c2a3d7-9126-4483-b09f-3ba286dc2d36/bin/utaipan-g80aRyZoba/config/TaipanReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_61-invariant_racing.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5c2a3d7-9126-4483-b09f-3ba286dc2d36/bin/utaipan-g80aRyZoba/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5c2a3d7-9126-4483-b09f-3ba286dc2d36/bin/utaipan-g80aRyZoba --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 3465c34fa1c26a5c7a3494350123ab41e5828c33cb08ac3f67b81737d460e559 --- 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-b5237d8 [2022-11-22 01:59:29,223 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-22 01:59:29,224 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-22 01:59:29,248 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-22 01:59:29,249 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-22 01:59:29,250 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-22 01:59:29,251 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-22 01:59:29,253 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-22 01:59:29,255 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-22 01:59:29,256 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-22 01:59:29,257 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-22 01:59:29,258 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-22 01:59:29,258 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-22 01:59:29,259 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-22 01:59:29,261 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-22 01:59:29,262 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-22 01:59:29,263 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-22 01:59:29,264 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-22 01:59:29,266 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-22 01:59:29,268 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-22 01:59:29,270 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-22 01:59:29,272 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-22 01:59:29,273 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-22 01:59:29,274 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-22 01:59:29,279 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-22 01:59:29,279 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-22 01:59:29,280 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-22 01:59:29,281 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-22 01:59:29,281 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-22 01:59:29,283 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-22 01:59:29,283 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-22 01:59:29,284 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-22 01:59:29,285 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-22 01:59:29,286 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-22 01:59:29,287 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-22 01:59:29,288 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-22 01:59:29,289 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-22 01:59:29,289 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-22 01:59:29,290 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-22 01:59:29,291 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-22 01:59:29,292 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-22 01:59:29,293 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5c2a3d7-9126-4483-b09f-3ba286dc2d36/bin/utaipan-g80aRyZoba/config/svcomp-Overflow-32bit-Taipan_Default.epf [2022-11-22 01:59:29,324 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-22 01:59:29,325 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-22 01:59:29,325 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-22 01:59:29,326 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-22 01:59:29,326 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-22 01:59:29,327 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-22 01:59:29,327 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-22 01:59:29,327 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-22 01:59:29,328 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-22 01:59:29,328 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-22 01:59:29,328 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-22 01:59:29,329 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-22 01:59:29,329 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-22 01:59:29,329 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-22 01:59:29,330 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-22 01:59:29,330 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-22 01:59:29,330 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-22 01:59:29,331 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-22 01:59:29,332 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-22 01:59:29,332 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-22 01:59:29,332 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-22 01:59:29,333 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-22 01:59:29,333 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-22 01:59:29,333 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-22 01:59:29,334 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-22 01:59:29,334 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-22 01:59:29,335 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-22 01:59:29,335 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-22 01:59:29,335 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-22 01:59:29,336 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-22 01:59:29,336 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-22 01:59:29,336 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-22 01:59:29,337 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-22 01:59:29,337 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-22 01:59:29,337 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 01:59:29,338 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-22 01:59:29,338 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-22 01:59:29,338 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-22 01:59:29,339 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-22 01:59:29,339 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-22 01:59:29,339 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-22 01:59:29,340 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-22 01:59:29,340 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-22 01:59:29,340 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_f5c2a3d7-9126-4483-b09f-3ba286dc2d36/bin/utaipan-g80aRyZoba/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5c2a3d7-9126-4483-b09f-3ba286dc2d36/bin/utaipan-g80aRyZoba Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3465c34fa1c26a5c7a3494350123ab41e5828c33cb08ac3f67b81737d460e559 [2022-11-22 01:59:29,612 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-22 01:59:29,636 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-22 01:59:29,639 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-22 01:59:29,640 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-22 01:59:29,641 INFO L275 PluginConnector]: CDTParser initialized [2022-11-22 01:59:29,642 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5c2a3d7-9126-4483-b09f-3ba286dc2d36/bin/utaipan-g80aRyZoba/../../sv-benchmarks/c/goblint-regression/28-race_reach_61-invariant_racing.i [2022-11-22 01:59:32,843 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-22 01:59:33,169 INFO L351 CDTParser]: Found 1 translation units. [2022-11-22 01:59:33,169 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5c2a3d7-9126-4483-b09f-3ba286dc2d36/sv-benchmarks/c/goblint-regression/28-race_reach_61-invariant_racing.i [2022-11-22 01:59:33,188 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5c2a3d7-9126-4483-b09f-3ba286dc2d36/bin/utaipan-g80aRyZoba/data/3f9e1f0d3/864ffee7a5f84b1bb863c0ced24346c3/FLAG89bfa3006 [2022-11-22 01:59:33,213 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5c2a3d7-9126-4483-b09f-3ba286dc2d36/bin/utaipan-g80aRyZoba/data/3f9e1f0d3/864ffee7a5f84b1bb863c0ced24346c3 [2022-11-22 01:59:33,218 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-22 01:59:33,221 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-22 01:59:33,222 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-22 01:59:33,222 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-22 01:59:33,227 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-22 01:59:33,229 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:59:33" (1/1) ... [2022-11-22 01:59:33,231 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@76b9c401 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:59:33, skipping insertion in model container [2022-11-22 01:59:33,231 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:59:33" (1/1) ... [2022-11-22 01:59:33,240 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-22 01:59:33,287 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-22 01:59:33,725 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_f5c2a3d7-9126-4483-b09f-3ba286dc2d36/sv-benchmarks/c/goblint-regression/28-race_reach_61-invariant_racing.i[30176,30189] [2022-11-22 01:59:33,746 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 01:59:33,759 INFO L203 MainTranslator]: Completed pre-run [2022-11-22 01:59:33,794 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_f5c2a3d7-9126-4483-b09f-3ba286dc2d36/sv-benchmarks/c/goblint-regression/28-race_reach_61-invariant_racing.i[30176,30189] [2022-11-22 01:59:33,805 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 01:59:33,851 INFO L208 MainTranslator]: Completed translation [2022-11-22 01:59:33,852 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:59:33 WrapperNode [2022-11-22 01:59:33,853 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-22 01:59:33,854 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-22 01:59:33,854 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-22 01:59:33,855 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-22 01:59:33,862 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:59:33" (1/1) ... [2022-11-22 01:59:33,880 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:59:33" (1/1) ... [2022-11-22 01:59:33,902 INFO L138 Inliner]: procedures = 170, calls = 32, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 104 [2022-11-22 01:59:33,902 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-22 01:59:33,903 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-22 01:59:33,903 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-22 01:59:33,903 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-22 01:59:33,912 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:59:33" (1/1) ... [2022-11-22 01:59:33,913 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:59:33" (1/1) ... [2022-11-22 01:59:33,916 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:59:33" (1/1) ... [2022-11-22 01:59:33,917 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:59:33" (1/1) ... [2022-11-22 01:59:33,924 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:59:33" (1/1) ... [2022-11-22 01:59:33,929 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:59:33" (1/1) ... [2022-11-22 01:59:33,931 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:59:33" (1/1) ... [2022-11-22 01:59:33,932 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:59:33" (1/1) ... [2022-11-22 01:59:33,935 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-22 01:59:33,936 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-22 01:59:33,936 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-22 01:59:33,936 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-22 01:59:33,937 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:59:33" (1/1) ... [2022-11-22 01:59:33,944 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 01:59:33,957 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5c2a3d7-9126-4483-b09f-3ba286dc2d36/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:59:33,971 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5c2a3d7-9126-4483-b09f-3ba286dc2d36/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-22 01:59:33,983 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5c2a3d7-9126-4483-b09f-3ba286dc2d36/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-22 01:59:34,023 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-22 01:59:34,023 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-22 01:59:34,023 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-22 01:59:34,024 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-22 01:59:34,024 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-22 01:59:34,025 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-11-22 01:59:34,025 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-11-22 01:59:34,025 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-22 01:59:34,025 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-22 01:59:34,025 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-22 01:59:34,026 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-22 01:59:34,027 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-22 01:59:34,236 INFO L235 CfgBuilder]: Building ICFG [2022-11-22 01:59:34,239 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-22 01:59:34,604 INFO L276 CfgBuilder]: Performing block encoding [2022-11-22 01:59:34,612 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-22 01:59:34,613 INFO L300 CfgBuilder]: Removed 16 assume(true) statements. [2022-11-22 01:59:34,615 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:59:34 BoogieIcfgContainer [2022-11-22 01:59:34,615 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-22 01:59:34,618 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-22 01:59:34,618 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-22 01:59:34,622 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-22 01:59:34,622 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 01:59:33" (1/3) ... [2022-11-22 01:59:34,623 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a52ab5d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:59:34, skipping insertion in model container [2022-11-22 01:59:34,623 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:59:33" (2/3) ... [2022-11-22 01:59:34,624 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a52ab5d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:59:34, skipping insertion in model container [2022-11-22 01:59:34,624 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:59:34" (3/3) ... [2022-11-22 01:59:34,626 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_61-invariant_racing.i [2022-11-22 01:59:34,636 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-22 01:59:34,648 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-22 01:59:34,648 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2022-11-22 01:59:34,649 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-22 01:59:34,730 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-11-22 01:59:34,787 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-22 01:59:34,807 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 137 places, 153 transitions, 314 flow [2022-11-22 01:59:34,812 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 137 places, 153 transitions, 314 flow [2022-11-22 01:59:34,814 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 137 places, 153 transitions, 314 flow [2022-11-22 01:59:34,944 INFO L130 PetriNetUnfolder]: 30/218 cut-off events. [2022-11-22 01:59:34,944 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-22 01:59:34,951 INFO L83 FinitePrefix]: Finished finitePrefix Result has 224 conditions, 218 events. 30/218 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 700 event pairs, 0 based on Foata normal form. 0/169 useless extension candidates. Maximal degree in co-relation 113. Up to 6 conditions per place. [2022-11-22 01:59:34,955 INFO L119 LiptonReduction]: Number of co-enabled transitions 5850 [2022-11-22 01:59:39,304 INFO L134 LiptonReduction]: Checked pairs total: 15634 [2022-11-22 01:59:39,305 INFO L136 LiptonReduction]: Total number of compositions: 136 [2022-11-22 01:59:39,315 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 52 places, 66 transitions, 140 flow [2022-11-22 01:59:39,385 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 539 states, 488 states have (on average 2.819672131147541) internal successors, (1376), 538 states have internal predecessors, (1376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:59:39,409 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-22 01:59:39,417 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;@37ab8af1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-22 01:59:39,417 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2022-11-22 01:59:39,422 INFO L276 IsEmpty]: Start isEmpty. Operand has 539 states, 488 states have (on average 2.819672131147541) internal successors, (1376), 538 states have internal predecessors, (1376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:59:39,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-22 01:59:39,428 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:59:39,429 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-22 01:59:39,430 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-22 01:59:39,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:59:39,436 INFO L85 PathProgramCache]: Analyzing trace with hash 18055396, now seen corresponding path program 1 times [2022-11-22 01:59:39,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:59:39,448 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799830518] [2022-11-22 01:59:39,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:59:39,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:59:39,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:59:39,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:59:39,860 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:59:39,861 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799830518] [2022-11-22 01:59:39,862 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1799830518] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:59:39,864 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:59:39,864 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-22 01:59:39,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304912768] [2022-11-22 01:59:39,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:59:39,876 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:59:39,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:59:39,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:59:39,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:59:39,919 INFO L87 Difference]: Start difference. First operand has 539 states, 488 states have (on average 2.819672131147541) internal successors, (1376), 538 states have internal predecessors, (1376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:59:40,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:59:40,152 INFO L93 Difference]: Finished difference Result 483 states and 939 transitions. [2022-11-22 01:59:40,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:59:40,156 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2022-11-22 01:59:40,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:59:40,183 INFO L225 Difference]: With dead ends: 483 [2022-11-22 01:59:40,184 INFO L226 Difference]: Without dead ends: 476 [2022-11-22 01:59:40,185 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:59:40,192 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 19 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 01:59:40,200 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 12 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 01:59:40,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 476 states. [2022-11-22 01:59:40,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 476 to 476. [2022-11-22 01:59:40,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 476 states, 441 states have (on average 2.0997732426303855) internal successors, (926), 475 states have internal predecessors, (926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:59:40,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 476 states to 476 states and 926 transitions. [2022-11-22 01:59:40,299 INFO L78 Accepts]: Start accepts. Automaton has 476 states and 926 transitions. Word has length 4 [2022-11-22 01:59:40,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:59:40,301 INFO L495 AbstractCegarLoop]: Abstraction has 476 states and 926 transitions. [2022-11-22 01:59:40,301 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:59:40,302 INFO L276 IsEmpty]: Start isEmpty. Operand 476 states and 926 transitions. [2022-11-22 01:59:40,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-22 01:59:40,303 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:59:40,303 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2022-11-22 01:59:40,304 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-22 01:59:40,304 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-22 01:59:40,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:59:40,305 INFO L85 PathProgramCache]: Analyzing trace with hash 171398133, now seen corresponding path program 1 times [2022-11-22 01:59:40,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:59:40,306 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945308683] [2022-11-22 01:59:40,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:59:40,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:59:40,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-22 01:59:40,349 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-22 01:59:40,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-22 01:59:40,395 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-22 01:59:40,395 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-22 01:59:40,398 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 17 remaining) [2022-11-22 01:59:40,400 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 17 remaining) [2022-11-22 01:59:40,401 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 17 remaining) [2022-11-22 01:59:40,402 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 17 remaining) [2022-11-22 01:59:40,402 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 17 remaining) [2022-11-22 01:59:40,403 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 17 remaining) [2022-11-22 01:59:40,403 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 17 remaining) [2022-11-22 01:59:40,404 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 17 remaining) [2022-11-22 01:59:40,404 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 17 remaining) [2022-11-22 01:59:40,404 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 17 remaining) [2022-11-22 01:59:40,405 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 17 remaining) [2022-11-22 01:59:40,405 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 17 remaining) [2022-11-22 01:59:40,406 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 17 remaining) [2022-11-22 01:59:40,406 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 17 remaining) [2022-11-22 01:59:40,407 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 17 remaining) [2022-11-22 01:59:40,407 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 17 remaining) [2022-11-22 01:59:40,407 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 17 remaining) [2022-11-22 01:59:40,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-22 01:59:40,411 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1] [2022-11-22 01:59:40,414 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-22 01:59:40,415 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-11-22 01:59:40,445 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-22 01:59:40,449 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-22 01:59:40,449 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 172 places, 194 transitions, 406 flow [2022-11-22 01:59:40,450 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 172 places, 194 transitions, 406 flow [2022-11-22 01:59:40,450 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 172 places, 194 transitions, 406 flow [2022-11-22 01:59:40,537 INFO L130 PetriNetUnfolder]: 51/361 cut-off events. [2022-11-22 01:59:40,537 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-11-22 01:59:40,543 INFO L83 FinitePrefix]: Finished finitePrefix Result has 375 conditions, 361 events. 51/361 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1333 event pairs, 0 based on Foata normal form. 0/276 useless extension candidates. Maximal degree in co-relation 220. Up to 9 conditions per place. [2022-11-22 01:59:40,561 INFO L119 LiptonReduction]: Number of co-enabled transitions 16224 [2022-11-22 01:59:45,646 INFO L134 LiptonReduction]: Checked pairs total: 45356 [2022-11-22 01:59:45,647 INFO L136 LiptonReduction]: Total number of compositions: 162 [2022-11-22 01:59:45,648 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 75 places, 95 transitions, 208 flow [2022-11-22 01:59:46,139 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 10857 states, 10566 states have (on average 3.927314026121522) internal successors, (41496), 10856 states have internal predecessors, (41496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:59:46,143 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-22 01:59:46,144 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;@37ab8af1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-22 01:59:46,145 INFO L358 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2022-11-22 01:59:46,192 INFO L276 IsEmpty]: Start isEmpty. Operand has 10857 states, 10566 states have (on average 3.927314026121522) internal successors, (41496), 10856 states have internal predecessors, (41496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:59:46,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-22 01:59:46,193 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:59:46,193 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-22 01:59:46,194 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-22 01:59:46,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:59:46,195 INFO L85 PathProgramCache]: Analyzing trace with hash 937168604, now seen corresponding path program 1 times [2022-11-22 01:59:46,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:59:46,196 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049629169] [2022-11-22 01:59:46,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:59:46,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:59:46,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:59:46,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:59:46,251 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:59:46,251 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049629169] [2022-11-22 01:59:46,251 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1049629169] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:59:46,251 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:59:46,252 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-22 01:59:46,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847730618] [2022-11-22 01:59:46,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:59:46,253 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:59:46,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:59:46,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:59:46,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:59:46,295 INFO L87 Difference]: Start difference. First operand has 10857 states, 10566 states have (on average 3.927314026121522) internal successors, (41496), 10856 states have internal predecessors, (41496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:59:46,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:59:46,749 INFO L93 Difference]: Finished difference Result 10801 states and 31360 transitions. [2022-11-22 01:59:46,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:59:46,750 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-22 01:59:46,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:59:46,934 INFO L225 Difference]: With dead ends: 10801 [2022-11-22 01:59:46,934 INFO L226 Difference]: Without dead ends: 10764 [2022-11-22 01:59:46,935 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:59:46,936 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 22 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 01:59:46,937 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 28 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 01:59:46,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10764 states. [2022-11-22 01:59:47,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10764 to 10764. [2022-11-22 01:59:47,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10764 states, 10491 states have (on average 2.97883900486131) internal successors, (31251), 10763 states have internal predecessors, (31251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:59:47,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10764 states to 10764 states and 31251 transitions. [2022-11-22 01:59:47,520 INFO L78 Accepts]: Start accepts. Automaton has 10764 states and 31251 transitions. Word has length 5 [2022-11-22 01:59:47,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:59:47,521 INFO L495 AbstractCegarLoop]: Abstraction has 10764 states and 31251 transitions. [2022-11-22 01:59:47,521 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:59:47,521 INFO L276 IsEmpty]: Start isEmpty. Operand 10764 states and 31251 transitions. [2022-11-22 01:59:47,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-22 01:59:47,522 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:59:47,522 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:59:47,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-22 01:59:47,523 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-22 01:59:47,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:59:47,524 INFO L85 PathProgramCache]: Analyzing trace with hash -824601372, now seen corresponding path program 1 times [2022-11-22 01:59:47,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:59:47,524 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608723157] [2022-11-22 01:59:47,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:59:47,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:59:47,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:59:47,573 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:59:47,574 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:59:47,574 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [608723157] [2022-11-22 01:59:47,575 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [608723157] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:59:47,575 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:59:47,575 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-22 01:59:47,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961228275] [2022-11-22 01:59:47,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:59:47,576 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:59:47,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:59:47,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:59:47,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:59:47,577 INFO L87 Difference]: Start difference. First operand 10764 states and 31251 transitions. Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:59:48,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:59:48,001 INFO L93 Difference]: Finished difference Result 8388 states and 21768 transitions. [2022-11-22 01:59:48,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:59:48,015 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-22 01:59:48,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:59:48,169 INFO L225 Difference]: With dead ends: 8388 [2022-11-22 01:59:48,170 INFO L226 Difference]: Without dead ends: 8334 [2022-11-22 01:59:48,170 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:59:48,172 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 49 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-22 01:59:48,172 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 27 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-22 01:59:48,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8334 states. [2022-11-22 01:59:48,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8334 to 7526. [2022-11-22 01:59:48,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7526 states, 7385 states have (on average 2.745565335138795) internal successors, (20276), 7525 states have internal predecessors, (20276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:59:48,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7526 states to 7526 states and 20276 transitions. [2022-11-22 01:59:48,605 INFO L78 Accepts]: Start accepts. Automaton has 7526 states and 20276 transitions. Word has length 8 [2022-11-22 01:59:48,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:59:48,606 INFO L495 AbstractCegarLoop]: Abstraction has 7526 states and 20276 transitions. [2022-11-22 01:59:48,607 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:59:48,607 INFO L276 IsEmpty]: Start isEmpty. Operand 7526 states and 20276 transitions. [2022-11-22 01:59:48,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-22 01:59:48,608 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:59:48,608 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2022-11-22 01:59:48,609 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-22 01:59:48,609 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-22 01:59:48,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:59:48,610 INFO L85 PathProgramCache]: Analyzing trace with hash 865272541, now seen corresponding path program 1 times [2022-11-22 01:59:48,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:59:48,610 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801784177] [2022-11-22 01:59:48,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:59:48,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:59:48,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:59:48,738 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:59:48,739 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:59:48,739 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801784177] [2022-11-22 01:59:48,739 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1801784177] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 01:59:48,740 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2138020849] [2022-11-22 01:59:48,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:59:48,740 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:59:48,741 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5c2a3d7-9126-4483-b09f-3ba286dc2d36/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:59:48,750 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5c2a3d7-9126-4483-b09f-3ba286dc2d36/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 01:59:48,770 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5c2a3d7-9126-4483-b09f-3ba286dc2d36/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-22 01:59:48,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:59:48,855 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-22 01:59:48,857 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:59:48,912 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:59:48,912 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-22 01:59:48,912 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2138020849] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:59:48,913 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-22 01:59:48,913 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2022-11-22 01:59:48,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550528987] [2022-11-22 01:59:48,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:59:48,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-22 01:59:48,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:59:48,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-22 01:59:48,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-22 01:59:48,915 INFO L87 Difference]: Start difference. First operand 7526 states and 20276 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:59:49,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:59:49,249 INFO L93 Difference]: Finished difference Result 7510 states and 20236 transitions. [2022-11-22 01:59:49,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-22 01:59:49,252 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-22 01:59:49,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:59:49,305 INFO L225 Difference]: With dead ends: 7510 [2022-11-22 01:59:49,305 INFO L226 Difference]: Without dead ends: 7510 [2022-11-22 01:59:49,305 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-22 01:59:49,307 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 131 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 01:59:49,307 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [131 Valid, 18 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 01:59:49,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7510 states. [2022-11-22 01:59:49,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7510 to 7510. [2022-11-22 01:59:49,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7510 states, 7370 states have (on average 2.7457259158751697) internal successors, (20236), 7509 states have internal predecessors, (20236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:59:49,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7510 states to 7510 states and 20236 transitions. [2022-11-22 01:59:49,657 INFO L78 Accepts]: Start accepts. Automaton has 7510 states and 20236 transitions. Word has length 9 [2022-11-22 01:59:49,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:59:49,658 INFO L495 AbstractCegarLoop]: Abstraction has 7510 states and 20236 transitions. [2022-11-22 01:59:49,659 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:59:49,660 INFO L276 IsEmpty]: Start isEmpty. Operand 7510 states and 20236 transitions. [2022-11-22 01:59:49,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-22 01:59:49,663 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:59:49,664 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2022-11-22 01:59:49,671 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5c2a3d7-9126-4483-b09f-3ba286dc2d36/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-22 01:59:49,870 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5c2a3d7-9126-4483-b09f-3ba286dc2d36/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:59:49,870 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-22 01:59:49,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:59:49,871 INFO L85 PathProgramCache]: Analyzing trace with hash 865272542, now seen corresponding path program 1 times [2022-11-22 01:59:49,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:59:49,871 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725968640] [2022-11-22 01:59:49,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:59:49,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:59:49,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:59:49,972 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-22 01:59:49,974 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:59:49,974 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [725968640] [2022-11-22 01:59:49,974 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [725968640] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:59:49,975 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:59:49,977 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-22 01:59:49,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032010768] [2022-11-22 01:59:49,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:59:49,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:59:49,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:59:49,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:59:49,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:59:49,980 INFO L87 Difference]: Start difference. First operand 7510 states and 20236 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:59:50,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:59:50,180 INFO L93 Difference]: Finished difference Result 7494 states and 20196 transitions. [2022-11-22 01:59:50,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:59:50,181 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-22 01:59:50,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:59:50,221 INFO L225 Difference]: With dead ends: 7494 [2022-11-22 01:59:50,222 INFO L226 Difference]: Without dead ends: 7494 [2022-11-22 01:59:50,222 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:59:50,223 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 8 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 01:59:50,224 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 26 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 01:59:50,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7494 states. [2022-11-22 01:59:50,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7494 to 7494. [2022-11-22 01:59:50,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7494 states, 7355 states have (on average 2.7458871515975525) internal successors, (20196), 7493 states have internal predecessors, (20196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:59:50,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7494 states to 7494 states and 20196 transitions. [2022-11-22 01:59:50,615 INFO L78 Accepts]: Start accepts. Automaton has 7494 states and 20196 transitions. Word has length 9 [2022-11-22 01:59:50,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:59:50,616 INFO L495 AbstractCegarLoop]: Abstraction has 7494 states and 20196 transitions. [2022-11-22 01:59:50,616 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:59:50,616 INFO L276 IsEmpty]: Start isEmpty. Operand 7494 states and 20196 transitions. [2022-11-22 01:59:50,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-22 01:59:50,620 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:59:50,620 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2022-11-22 01:59:50,620 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-22 01:59:50,620 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-22 01:59:50,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:59:50,621 INFO L85 PathProgramCache]: Analyzing trace with hash -1696702961, now seen corresponding path program 1 times [2022-11-22 01:59:50,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:59:50,622 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138446899] [2022-11-22 01:59:50,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:59:50,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:59:50,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-22 01:59:50,666 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-22 01:59:50,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-22 01:59:50,706 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-22 01:59:50,713 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-22 01:59:50,714 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (20 of 21 remaining) [2022-11-22 01:59:50,714 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 21 remaining) [2022-11-22 01:59:50,714 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 21 remaining) [2022-11-22 01:59:50,715 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 21 remaining) [2022-11-22 01:59:50,715 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 21 remaining) [2022-11-22 01:59:50,715 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 21 remaining) [2022-11-22 01:59:50,716 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 21 remaining) [2022-11-22 01:59:50,716 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 21 remaining) [2022-11-22 01:59:50,716 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 21 remaining) [2022-11-22 01:59:50,717 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 21 remaining) [2022-11-22 01:59:50,717 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 21 remaining) [2022-11-22 01:59:50,717 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 21 remaining) [2022-11-22 01:59:50,720 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 21 remaining) [2022-11-22 01:59:50,721 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 21 remaining) [2022-11-22 01:59:50,721 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 21 remaining) [2022-11-22 01:59:50,721 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 21 remaining) [2022-11-22 01:59:50,722 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 21 remaining) [2022-11-22 01:59:50,722 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 21 remaining) [2022-11-22 01:59:50,722 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 21 remaining) [2022-11-22 01:59:50,723 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 21 remaining) [2022-11-22 01:59:50,723 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 21 remaining) [2022-11-22 01:59:50,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-22 01:59:50,734 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2022-11-22 01:59:50,734 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-22 01:59:50,734 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-11-22 01:59:50,786 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-22 01:59:50,795 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-22 01:59:50,796 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 207 places, 235 transitions, 500 flow [2022-11-22 01:59:50,796 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 207 places, 235 transitions, 500 flow [2022-11-22 01:59:50,797 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 207 places, 235 transitions, 500 flow [2022-11-22 01:59:51,043 INFO L130 PetriNetUnfolder]: 77/545 cut-off events. [2022-11-22 01:59:51,044 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2022-11-22 01:59:51,057 INFO L83 FinitePrefix]: Finished finitePrefix Result has 573 conditions, 545 events. 77/545 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 2198 event pairs, 1 based on Foata normal form. 0/416 useless extension candidates. Maximal degree in co-relation 369. Up to 16 conditions per place. [2022-11-22 01:59:51,084 INFO L119 LiptonReduction]: Number of co-enabled transitions 29250 [2022-11-22 01:59:55,815 INFO L134 LiptonReduction]: Checked pairs total: 91573 [2022-11-22 01:59:55,816 INFO L136 LiptonReduction]: Total number of compositions: 200 [2022-11-22 01:59:55,818 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 96 places, 122 transitions, 274 flow [2022-11-22 02:00:03,495 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 209179 states, 207598 states have (on average 5.15368645169992) internal successors, (1069895), 209178 states have internal predecessors, (1069895), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:00:03,500 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-22 02:00:03,501 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;@37ab8af1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-22 02:00:03,501 INFO L358 AbstractCegarLoop]: Starting to check reachability of 25 error locations. [2022-11-22 02:00:03,821 INFO L276 IsEmpty]: Start isEmpty. Operand has 209179 states, 207598 states have (on average 5.15368645169992) internal successors, (1069895), 209178 states have internal predecessors, (1069895), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:00:03,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-22 02:00:03,822 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:00:03,822 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-22 02:00:03,822 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2022-11-22 02:00:03,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:00:03,824 INFO L85 PathProgramCache]: Analyzing trace with hash 1391496998, now seen corresponding path program 1 times [2022-11-22 02:00:03,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:00:03,824 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366960398] [2022-11-22 02:00:03,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:00:03,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:00:03,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:00:03,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:00:03,859 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:00:03,859 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366960398] [2022-11-22 02:00:03,860 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1366960398] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:00:03,860 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:00:03,860 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-22 02:00:03,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331028599] [2022-11-22 02:00:03,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:00:03,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:00:03,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:00:03,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:00:03,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:00:04,140 INFO L87 Difference]: Start difference. First operand has 209179 states, 207598 states have (on average 5.15368645169992) internal successors, (1069895), 209178 states have internal predecessors, (1069895), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:00:08,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:00:08,531 INFO L93 Difference]: Finished difference Result 209123 states and 812166 transitions. [2022-11-22 02:00:08,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 02:00:08,531 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-22 02:00:08,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:00:11,182 INFO L225 Difference]: With dead ends: 209123 [2022-11-22 02:00:11,183 INFO L226 Difference]: Without dead ends: 208906 [2022-11-22 02:00:11,183 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:00:11,185 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 19 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-22 02:00:11,185 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 32 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-22 02:00:11,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208906 states. [2022-11-22 02:00:18,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208906 to 208906. [2022-11-22 02:00:19,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208906 states, 207347 states have (on average 3.9127694155208417) internal successors, (811301), 208905 states have internal predecessors, (811301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:00:21,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208906 states to 208906 states and 811301 transitions. [2022-11-22 02:00:21,277 INFO L78 Accepts]: Start accepts. Automaton has 208906 states and 811301 transitions. Word has length 5 [2022-11-22 02:00:21,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:00:21,278 INFO L495 AbstractCegarLoop]: Abstraction has 208906 states and 811301 transitions. [2022-11-22 02:00:21,278 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:00:21,278 INFO L276 IsEmpty]: Start isEmpty. Operand 208906 states and 811301 transitions. [2022-11-22 02:00:21,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-22 02:00:21,279 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:00:21,279 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:00:21,279 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-22 02:00:21,280 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2022-11-22 02:00:21,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:00:21,280 INFO L85 PathProgramCache]: Analyzing trace with hash -475317799, now seen corresponding path program 1 times [2022-11-22 02:00:21,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:00:21,281 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064111979] [2022-11-22 02:00:21,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:00:21,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:00:21,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:00:21,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:00:21,313 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:00:21,313 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1064111979] [2022-11-22 02:00:21,314 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1064111979] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:00:21,314 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:00:21,314 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-22 02:00:21,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952051717] [2022-11-22 02:00:21,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:00:21,315 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:00:21,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:00:21,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:00:21,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:00:21,316 INFO L87 Difference]: Start difference. First operand 208906 states and 811301 transitions. Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:00:23,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:00:23,572 INFO L93 Difference]: Finished difference Result 173918 states and 602190 transitions. [2022-11-22 02:00:23,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 02:00:23,573 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-22 02:00:23,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:00:25,342 INFO L225 Difference]: With dead ends: 173918 [2022-11-22 02:00:25,342 INFO L226 Difference]: Without dead ends: 173475 [2022-11-22 02:00:25,342 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:00:25,343 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 63 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 178 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-22 02:00:25,343 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 38 Invalid, 200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 178 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-22 02:00:25,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173475 states. [2022-11-22 02:00:30,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173475 to 162833. [2022-11-22 02:00:30,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162833 states, 162004 states have (on average 3.5654983827559814) internal successors, (577625), 162832 states have internal predecessors, (577625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:00:31,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162833 states to 162833 states and 577625 transitions. [2022-11-22 02:00:31,600 INFO L78 Accepts]: Start accepts. Automaton has 162833 states and 577625 transitions. Word has length 9 [2022-11-22 02:00:31,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:00:31,600 INFO L495 AbstractCegarLoop]: Abstraction has 162833 states and 577625 transitions. [2022-11-22 02:00:31,601 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:00:31,601 INFO L276 IsEmpty]: Start isEmpty. Operand 162833 states and 577625 transitions. [2022-11-22 02:00:31,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-22 02:00:31,601 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:00:31,601 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2022-11-22 02:00:31,601 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-22 02:00:31,602 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2022-11-22 02:00:31,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:00:31,602 INFO L85 PathProgramCache]: Analyzing trace with hash 1078306165, now seen corresponding path program 1 times [2022-11-22 02:00:31,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:00:31,602 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131832204] [2022-11-22 02:00:31,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:00:31,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:00:31,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:00:31,671 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:00:31,672 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:00:31,672 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2131832204] [2022-11-22 02:00:31,672 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2131832204] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 02:00:31,672 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1220329664] [2022-11-22 02:00:31,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:00:31,673 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:00:31,673 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5c2a3d7-9126-4483-b09f-3ba286dc2d36/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:00:31,675 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5c2a3d7-9126-4483-b09f-3ba286dc2d36/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 02:00:31,698 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5c2a3d7-9126-4483-b09f-3ba286dc2d36/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-22 02:00:31,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:00:31,760 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-22 02:00:31,761 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:00:31,787 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:00:31,789 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-22 02:00:31,789 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1220329664] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:00:31,789 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-22 02:00:31,789 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2022-11-22 02:00:31,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734052045] [2022-11-22 02:00:31,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:00:31,790 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-22 02:00:31,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:00:31,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-22 02:00:31,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-22 02:00:31,791 INFO L87 Difference]: Start difference. First operand 162833 states and 577625 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:00:33,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:00:33,707 INFO L93 Difference]: Finished difference Result 162753 states and 577377 transitions. [2022-11-22 02:00:33,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-22 02:00:33,708 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-22 02:00:33,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted.