./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_27-funptr_racing.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 4e7fbc69 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_229ec11b-3c86-4a13-914e-f7f2dfd7f204/bin/utaipan-Q6hlc19bkW/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_229ec11b-3c86-4a13-914e-f7f2dfd7f204/bin/utaipan-Q6hlc19bkW/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_229ec11b-3c86-4a13-914e-f7f2dfd7f204/bin/utaipan-Q6hlc19bkW/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_229ec11b-3c86-4a13-914e-f7f2dfd7f204/bin/utaipan-Q6hlc19bkW/config/TaipanReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_27-funptr_racing.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_229ec11b-3c86-4a13-914e-f7f2dfd7f204/bin/utaipan-Q6hlc19bkW/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_229ec11b-3c86-4a13-914e-f7f2dfd7f204/bin/utaipan-Q6hlc19bkW --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 8d24e1fe59577ae07a5b7a898c9dc79f871eafbb8fdf9529a0c24eed9c094f3d --- 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-4e7fbc6 [2022-11-23 15:53:17,197 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 15:53:17,200 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 15:53:17,236 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 15:53:17,237 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 15:53:17,238 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 15:53:17,239 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 15:53:17,241 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 15:53:17,243 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 15:53:17,248 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 15:53:17,250 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 15:53:17,256 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 15:53:17,257 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 15:53:17,264 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 15:53:17,265 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 15:53:17,266 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 15:53:17,267 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 15:53:17,268 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 15:53:17,270 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 15:53:17,271 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 15:53:17,273 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 15:53:17,279 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 15:53:17,282 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 15:53:17,283 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 15:53:17,296 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 15:53:17,296 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 15:53:17,296 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 15:53:17,297 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 15:53:17,298 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 15:53:17,299 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 15:53:17,299 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 15:53:17,300 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 15:53:17,301 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 15:53:17,302 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 15:53:17,303 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 15:53:17,303 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 15:53:17,304 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 15:53:17,304 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 15:53:17,304 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 15:53:17,305 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 15:53:17,306 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 15:53:17,312 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_229ec11b-3c86-4a13-914e-f7f2dfd7f204/bin/utaipan-Q6hlc19bkW/config/svcomp-Overflow-32bit-Taipan_Default.epf [2022-11-23 15:53:17,346 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 15:53:17,347 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 15:53:17,347 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 15:53:17,347 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 15:53:17,348 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 15:53:17,348 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 15:53:17,348 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-23 15:53:17,349 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-23 15:53:17,349 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-23 15:53:17,349 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-23 15:53:17,349 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-23 15:53:17,349 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-23 15:53:17,350 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-23 15:53:17,350 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-23 15:53:17,350 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-23 15:53:17,350 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-23 15:53:17,350 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-23 15:53:17,351 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-23 15:53:17,351 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 15:53:17,352 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-23 15:53:17,352 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-23 15:53:17,352 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 15:53:17,352 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-23 15:53:17,352 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 15:53:17,353 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 15:53:17,353 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 15:53:17,353 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 15:53:17,353 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-23 15:53:17,353 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-23 15:53:17,354 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 15:53:17,354 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 15:53:17,354 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 15:53:17,354 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 15:53:17,355 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 15:53:17,355 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 15:53:17,355 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 15:53:17,355 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-23 15:53:17,355 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 15:53:17,356 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 15:53:17,356 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-23 15:53:17,356 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 15:53:17,356 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 15:53:17,357 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-23 15:53:17,357 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_229ec11b-3c86-4a13-914e-f7f2dfd7f204/bin/utaipan-Q6hlc19bkW/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_229ec11b-3c86-4a13-914e-f7f2dfd7f204/bin/utaipan-Q6hlc19bkW Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8d24e1fe59577ae07a5b7a898c9dc79f871eafbb8fdf9529a0c24eed9c094f3d [2022-11-23 15:53:17,652 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 15:53:17,700 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 15:53:17,702 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 15:53:17,703 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 15:53:17,704 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 15:53:17,706 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_229ec11b-3c86-4a13-914e-f7f2dfd7f204/bin/utaipan-Q6hlc19bkW/../../sv-benchmarks/c/goblint-regression/28-race_reach_27-funptr_racing.i [2022-11-23 15:53:20,981 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 15:53:21,239 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 15:53:21,240 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_229ec11b-3c86-4a13-914e-f7f2dfd7f204/sv-benchmarks/c/goblint-regression/28-race_reach_27-funptr_racing.i [2022-11-23 15:53:21,258 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_229ec11b-3c86-4a13-914e-f7f2dfd7f204/bin/utaipan-Q6hlc19bkW/data/288fa925b/e5d7240dfc8d4842b8bcae3c13f11720/FLAGea40f3f9a [2022-11-23 15:53:21,288 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_229ec11b-3c86-4a13-914e-f7f2dfd7f204/bin/utaipan-Q6hlc19bkW/data/288fa925b/e5d7240dfc8d4842b8bcae3c13f11720 [2022-11-23 15:53:21,290 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 15:53:21,294 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 15:53:21,296 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 15:53:21,297 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 15:53:21,301 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 15:53:21,302 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:53:21" (1/1) ... [2022-11-23 15:53:21,303 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ca4e25f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:53:21, skipping insertion in model container [2022-11-23 15:53:21,303 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:53:21" (1/1) ... [2022-11-23 15:53:21,311 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 15:53:21,375 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 15:53:21,889 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_229ec11b-3c86-4a13-914e-f7f2dfd7f204/sv-benchmarks/c/goblint-regression/28-race_reach_27-funptr_racing.i[41323,41336] [2022-11-23 15:53:21,929 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 15:53:21,964 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 15:53:22,036 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_229ec11b-3c86-4a13-914e-f7f2dfd7f204/sv-benchmarks/c/goblint-regression/28-race_reach_27-funptr_racing.i[41323,41336] [2022-11-23 15:53:22,067 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 15:53:22,158 INFO L208 MainTranslator]: Completed translation [2022-11-23 15:53:22,159 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:53:22 WrapperNode [2022-11-23 15:53:22,159 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 15:53:22,184 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 15:53:22,184 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 15:53:22,184 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 15:53:22,195 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:53:22" (1/1) ... [2022-11-23 15:53:22,242 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:53:22" (1/1) ... [2022-11-23 15:53:22,287 INFO L138 Inliner]: procedures = 273, calls = 43, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 160 [2022-11-23 15:53:22,288 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 15:53:22,289 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 15:53:22,289 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 15:53:22,289 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 15:53:22,302 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:53:22" (1/1) ... [2022-11-23 15:53:22,302 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:53:22" (1/1) ... [2022-11-23 15:53:22,306 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:53:22" (1/1) ... [2022-11-23 15:53:22,307 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:53:22" (1/1) ... [2022-11-23 15:53:22,315 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:53:22" (1/1) ... [2022-11-23 15:53:22,330 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:53:22" (1/1) ... [2022-11-23 15:53:22,332 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:53:22" (1/1) ... [2022-11-23 15:53:22,334 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:53:22" (1/1) ... [2022-11-23 15:53:22,337 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 15:53:22,339 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 15:53:22,339 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 15:53:22,339 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 15:53:22,340 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:53:22" (1/1) ... [2022-11-23 15:53:22,367 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 15:53:22,383 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_229ec11b-3c86-4a13-914e-f7f2dfd7f204/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:53:22,413 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_229ec11b-3c86-4a13-914e-f7f2dfd7f204/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 15:53:22,432 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_229ec11b-3c86-4a13-914e-f7f2dfd7f204/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 15:53:22,465 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-23 15:53:22,465 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-23 15:53:22,465 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-23 15:53:22,466 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-23 15:53:22,466 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-23 15:53:22,466 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 15:53:22,467 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-11-23 15:53:22,467 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-11-23 15:53:22,468 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 15:53:22,468 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 15:53:22,468 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 15:53:22,470 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-23 15:53:22,664 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 15:53:22,666 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 15:53:23,040 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 15:53:23,049 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 15:53:23,049 INFO L300 CfgBuilder]: Removed 16 assume(true) statements. [2022-11-23 15:53:23,052 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:53:23 BoogieIcfgContainer [2022-11-23 15:53:23,052 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 15:53:23,054 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 15:53:23,054 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 15:53:23,074 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 15:53:23,074 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 03:53:21" (1/3) ... [2022-11-23 15:53:23,074 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e50e33d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:53:23, skipping insertion in model container [2022-11-23 15:53:23,075 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:53:22" (2/3) ... [2022-11-23 15:53:23,075 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e50e33d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:53:23, skipping insertion in model container [2022-11-23 15:53:23,075 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:53:23" (3/3) ... [2022-11-23 15:53:23,076 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_27-funptr_racing.i [2022-11-23 15:53:23,085 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-23 15:53:23,094 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 15:53:23,095 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2022-11-23 15:53:23,095 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-23 15:53:23,227 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-11-23 15:53:23,268 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-23 15:53:23,293 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 162 places, 178 transitions, 364 flow [2022-11-23 15:53:23,295 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 162 places, 178 transitions, 364 flow [2022-11-23 15:53:23,297 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 162 places, 178 transitions, 364 flow [2022-11-23 15:53:23,427 INFO L130 PetriNetUnfolder]: 24/217 cut-off events. [2022-11-23 15:53:23,427 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-23 15:53:23,438 INFO L83 FinitePrefix]: Finished finitePrefix Result has 223 conditions, 217 events. 24/217 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 631 event pairs, 0 based on Foata normal form. 0/178 useless extension candidates. Maximal degree in co-relation 130. Up to 4 conditions per place. [2022-11-23 15:53:23,445 INFO L119 LiptonReduction]: Number of co-enabled transitions 8036 [2022-11-23 15:53:29,364 INFO L134 LiptonReduction]: Checked pairs total: 14442 [2022-11-23 15:53:29,364 INFO L136 LiptonReduction]: Total number of compositions: 168 [2022-11-23 15:53:29,373 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 51 places, 64 transitions, 136 flow [2022-11-23 15:53:29,415 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 479 states, 432 states have (on average 2.701388888888889) internal successors, (1167), 478 states have internal predecessors, (1167), 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) [2022-11-23 15:53:29,437 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 15:53:29,449 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;@1f8da57e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 15:53:29,450 INFO L358 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2022-11-23 15:53:29,456 INFO L276 IsEmpty]: Start isEmpty. Operand has 479 states, 432 states have (on average 2.701388888888889) internal successors, (1167), 478 states have internal predecessors, (1167), 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) [2022-11-23 15:53:29,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-23 15:53:29,461 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:53:29,462 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-23 15:53:29,463 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-23 15:53:29,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:53:29,470 INFO L85 PathProgramCache]: Analyzing trace with hash 21999561, now seen corresponding path program 1 times [2022-11-23 15:53:29,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:53:29,480 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [234248040] [2022-11-23 15:53:29,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:53:29,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:53:29,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:53:29,795 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:53:29,796 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:53:29,796 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [234248040] [2022-11-23 15:53:29,797 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [234248040] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:53:29,797 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:53:29,797 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-23 15:53:29,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310906189] [2022-11-23 15:53:29,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:53:29,810 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:53:29,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:53:29,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:53:29,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:53:29,841 INFO L87 Difference]: Start difference. First operand has 479 states, 432 states have (on average 2.701388888888889) internal successors, (1167), 478 states have internal predecessors, (1167), 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) [2022-11-23 15:53:30,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:53:30,051 INFO L93 Difference]: Finished difference Result 414 states and 791 transitions. [2022-11-23 15:53:30,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:53:30,054 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 [2022-11-23 15:53:30,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:53:30,076 INFO L225 Difference]: With dead ends: 414 [2022-11-23 15:53:30,076 INFO L226 Difference]: Without dead ends: 405 [2022-11-23 15:53:30,077 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 [2022-11-23 15:53:30,083 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 29 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-23 15:53:30,085 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 10 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-23 15:53:30,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 405 states. [2022-11-23 15:53:30,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 405 to 405. [2022-11-23 15:53:30,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 405 states, 378 states have (on average 2.0476190476190474) internal successors, (774), 404 states have internal predecessors, (774), 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) [2022-11-23 15:53:30,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 405 states to 405 states and 774 transitions. [2022-11-23 15:53:30,143 INFO L78 Accepts]: Start accepts. Automaton has 405 states and 774 transitions. Word has length 4 [2022-11-23 15:53:30,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:53:30,144 INFO L495 AbstractCegarLoop]: Abstraction has 405 states and 774 transitions. [2022-11-23 15:53:30,144 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) [2022-11-23 15:53:30,144 INFO L276 IsEmpty]: Start isEmpty. Operand 405 states and 774 transitions. [2022-11-23 15:53:30,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-23 15:53:30,145 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:53:30,145 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2022-11-23 15:53:30,145 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 15:53:30,146 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-23 15:53:30,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:53:30,146 INFO L85 PathProgramCache]: Analyzing trace with hash -333185860, now seen corresponding path program 1 times [2022-11-23 15:53:30,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:53:30,147 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230860499] [2022-11-23 15:53:30,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:53:30,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:53:30,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-23 15:53:30,171 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-23 15:53:30,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-23 15:53:30,207 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-23 15:53:30,207 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-23 15:53:30,209 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (20 of 21 remaining) [2022-11-23 15:53:30,211 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 21 remaining) [2022-11-23 15:53:30,211 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 21 remaining) [2022-11-23 15:53:30,212 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 21 remaining) [2022-11-23 15:53:30,212 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 21 remaining) [2022-11-23 15:53:30,212 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 21 remaining) [2022-11-23 15:53:30,212 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 21 remaining) [2022-11-23 15:53:30,213 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 21 remaining) [2022-11-23 15:53:30,213 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 21 remaining) [2022-11-23 15:53:30,213 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 21 remaining) [2022-11-23 15:53:30,214 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 21 remaining) [2022-11-23 15:53:30,214 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 21 remaining) [2022-11-23 15:53:30,214 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 21 remaining) [2022-11-23 15:53:30,214 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 21 remaining) [2022-11-23 15:53:30,215 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 21 remaining) [2022-11-23 15:53:30,215 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 21 remaining) [2022-11-23 15:53:30,219 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 21 remaining) [2022-11-23 15:53:30,220 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 21 remaining) [2022-11-23 15:53:30,220 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 21 remaining) [2022-11-23 15:53:30,220 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 21 remaining) [2022-11-23 15:53:30,221 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 21 remaining) [2022-11-23 15:53:30,221 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-23 15:53:30,224 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1] [2022-11-23 15:53:30,226 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-23 15:53:30,227 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-11-23 15:53:30,280 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-23 15:53:30,291 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-23 15:53:30,292 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 234 places, 262 transitions, 542 flow [2022-11-23 15:53:30,293 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 234 places, 262 transitions, 542 flow [2022-11-23 15:53:30,293 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 234 places, 262 transitions, 542 flow [2022-11-23 15:53:30,389 INFO L130 PetriNetUnfolder]: 45/377 cut-off events. [2022-11-23 15:53:30,389 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-11-23 15:53:30,396 INFO L83 FinitePrefix]: Finished finitePrefix Result has 391 conditions, 377 events. 45/377 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1434 event pairs, 0 based on Foata normal form. 0/302 useless extension candidates. Maximal degree in co-relation 232. Up to 8 conditions per place. [2022-11-23 15:53:30,415 INFO L119 LiptonReduction]: Number of co-enabled transitions 32636 [2022-11-23 15:53:36,540 INFO L134 LiptonReduction]: Checked pairs total: 89919 [2022-11-23 15:53:36,541 INFO L136 LiptonReduction]: Total number of compositions: 231 [2022-11-23 15:53:36,547 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 92 places, 118 transitions, 254 flow [2022-11-23 15:53:37,328 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 19420 states, 18941 states have (on average 3.8773032046882423) internal successors, (73440), 19419 states have internal predecessors, (73440), 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) [2022-11-23 15:53:37,330 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 15:53:37,331 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;@1f8da57e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 15:53:37,331 INFO L358 AbstractCegarLoop]: Starting to check reachability of 29 error locations. [2022-11-23 15:53:37,390 INFO L276 IsEmpty]: Start isEmpty. Operand has 19420 states, 18941 states have (on average 3.8773032046882423) internal successors, (73440), 19419 states have internal predecessors, (73440), 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) [2022-11-23 15:53:37,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-23 15:53:37,391 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:53:37,391 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-23 15:53:37,391 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2022-11-23 15:53:37,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:53:37,392 INFO L85 PathProgramCache]: Analyzing trace with hash 1232249475, now seen corresponding path program 1 times [2022-11-23 15:53:37,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:53:37,394 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413151981] [2022-11-23 15:53:37,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:53:37,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:53:37,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:53:37,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:53:37,677 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:53:37,677 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413151981] [2022-11-23 15:53:37,677 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1413151981] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:53:37,678 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:53:37,678 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-23 15:53:37,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477297701] [2022-11-23 15:53:37,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:53:37,679 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:53:37,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:53:37,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:53:37,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:53:37,715 INFO L87 Difference]: Start difference. First operand has 19420 states, 18941 states have (on average 3.8773032046882423) internal successors, (73440), 19419 states have internal predecessors, (73440), 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) [2022-11-23 15:53:38,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:53:38,195 INFO L93 Difference]: Finished difference Result 19347 states and 56143 transitions. [2022-11-23 15:53:38,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:53:38,196 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 [2022-11-23 15:53:38,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:53:38,424 INFO L225 Difference]: With dead ends: 19347 [2022-11-23 15:53:38,425 INFO L226 Difference]: Without dead ends: 19282 [2022-11-23 15:53:38,425 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 [2022-11-23 15:53:38,426 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 33 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 24 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 [2022-11-23 15:53:38,427 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 24 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-23 15:53:38,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19282 states. [2022-11-23 15:53:39,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19282 to 19282. [2022-11-23 15:53:39,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19282 states, 18825 states have (on average 2.9721115537848606) internal successors, (55950), 19281 states have internal predecessors, (55950), 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) [2022-11-23 15:53:39,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19282 states to 19282 states and 55950 transitions. [2022-11-23 15:53:39,425 INFO L78 Accepts]: Start accepts. Automaton has 19282 states and 55950 transitions. Word has length 5 [2022-11-23 15:53:39,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:53:39,427 INFO L495 AbstractCegarLoop]: Abstraction has 19282 states and 55950 transitions. [2022-11-23 15:53:39,428 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) [2022-11-23 15:53:39,428 INFO L276 IsEmpty]: Start isEmpty. Operand 19282 states and 55950 transitions. [2022-11-23 15:53:39,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-23 15:53:39,430 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:53:39,430 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:53:39,431 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-23 15:53:39,431 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2022-11-23 15:53:39,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:53:39,431 INFO L85 PathProgramCache]: Analyzing trace with hash -1980048932, now seen corresponding path program 1 times [2022-11-23 15:53:39,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:53:39,432 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466415033] [2022-11-23 15:53:39,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:53:39,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:53:39,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:53:39,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:53:39,533 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:53:39,533 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [466415033] [2022-11-23 15:53:39,533 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [466415033] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:53:39,534 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:53:39,534 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-23 15:53:39,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519149261] [2022-11-23 15:53:39,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:53:39,534 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:53:39,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:53:39,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:53:39,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:53:39,535 INFO L87 Difference]: Start difference. First operand 19282 states and 55950 transitions. Second operand has 3 states, 2 states have (on average 4.5) 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) [2022-11-23 15:53:40,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:53:40,015 INFO L93 Difference]: Finished difference Result 23938 states and 66154 transitions. [2022-11-23 15:53:40,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:53:40,015 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) 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 [2022-11-23 15:53:40,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:53:40,211 INFO L225 Difference]: With dead ends: 23938 [2022-11-23 15:53:40,211 INFO L226 Difference]: Without dead ends: 23938 [2022-11-23 15:53:40,211 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 [2022-11-23 15:53:40,212 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 63 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 183 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-23 15:53:40,213 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 25 Invalid, 199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 183 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-23 15:53:40,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23938 states. [2022-11-23 15:53:41,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23938 to 21752. [2022-11-23 15:53:41,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21752 states, 21355 states have (on average 2.921470381643643) internal successors, (62388), 21751 states have internal predecessors, (62388), 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) [2022-11-23 15:53:41,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21752 states to 21752 states and 62388 transitions. [2022-11-23 15:53:41,391 INFO L78 Accepts]: Start accepts. Automaton has 21752 states and 62388 transitions. Word has length 9 [2022-11-23 15:53:41,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:53:41,395 INFO L495 AbstractCegarLoop]: Abstraction has 21752 states and 62388 transitions. [2022-11-23 15:53:41,395 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) 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) [2022-11-23 15:53:41,396 INFO L276 IsEmpty]: Start isEmpty. Operand 21752 states and 62388 transitions. [2022-11-23 15:53:41,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-23 15:53:41,399 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:53:41,399 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:53:41,399 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-23 15:53:41,399 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2022-11-23 15:53:41,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:53:41,404 INFO L85 PathProgramCache]: Analyzing trace with hash -1980049053, now seen corresponding path program 1 times [2022-11-23 15:53:41,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:53:41,405 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2097299322] [2022-11-23 15:53:41,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:53:41,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:53:41,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:53:41,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:53:41,446 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:53:41,446 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2097299322] [2022-11-23 15:53:41,446 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2097299322] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:53:41,447 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:53:41,447 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-23 15:53:41,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464848549] [2022-11-23 15:53:41,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:53:41,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:53:41,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:53:41,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:53:41,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:53:41,448 INFO L87 Difference]: Start difference. First operand 21752 states and 62388 transitions. Second operand has 3 states, 2 states have (on average 4.5) 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) [2022-11-23 15:53:41,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:53:41,915 INFO L93 Difference]: Finished difference Result 22928 states and 62256 transitions. [2022-11-23 15:53:41,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:53:41,916 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) 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 [2022-11-23 15:53:41,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:53:42,014 INFO L225 Difference]: With dead ends: 22928 [2022-11-23 15:53:42,014 INFO L226 Difference]: Without dead ends: 22856 [2022-11-23 15:53:42,014 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 [2022-11-23 15:53:42,015 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 59 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 187 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-23 15:53:42,016 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 25 Invalid, 203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 187 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-23 15:53:42,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22856 states. [2022-11-23 15:53:42,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22856 to 20942. [2022-11-23 15:53:42,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20942 states, 20645 states have (on average 2.8439815936062) internal successors, (58714), 20941 states have internal predecessors, (58714), 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) [2022-11-23 15:53:42,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20942 states to 20942 states and 58714 transitions. [2022-11-23 15:53:42,935 INFO L78 Accepts]: Start accepts. Automaton has 20942 states and 58714 transitions. Word has length 9 [2022-11-23 15:53:42,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:53:42,936 INFO L495 AbstractCegarLoop]: Abstraction has 20942 states and 58714 transitions. [2022-11-23 15:53:42,936 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) 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) [2022-11-23 15:53:42,936 INFO L276 IsEmpty]: Start isEmpty. Operand 20942 states and 58714 transitions. [2022-11-23 15:53:42,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-23 15:53:42,937 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:53:42,938 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2022-11-23 15:53:42,938 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-23 15:53:42,938 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2022-11-23 15:53:42,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:53:42,939 INFO L85 PathProgramCache]: Analyzing trace with hash 930218218, now seen corresponding path program 1 times [2022-11-23 15:53:42,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:53:42,939 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1601728071] [2022-11-23 15:53:42,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:53:42,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:53:42,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:53:43,023 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-23 15:53:43,023 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:53:43,024 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1601728071] [2022-11-23 15:53:43,024 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1601728071] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:53:43,024 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:53:43,024 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 15:53:43,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129921344] [2022-11-23 15:53:43,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:53:43,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:53:43,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:53:43,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:53:43,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:53:43,026 INFO L87 Difference]: Start difference. First operand 20942 states and 58714 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) [2022-11-23 15:53:43,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:53:43,570 INFO L93 Difference]: Finished difference Result 19933 states and 55727 transitions. [2022-11-23 15:53:43,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:53:43,571 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 [2022-11-23 15:53:43,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:53:43,641 INFO L225 Difference]: With dead ends: 19933 [2022-11-23 15:53:43,642 INFO L226 Difference]: Without dead ends: 19933 [2022-11-23 15:53:43,642 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 [2022-11-23 15:53:43,643 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 69 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-23 15:53:43,643 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 22 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-23 15:53:43,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19933 states. [2022-11-23 15:53:44,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19933 to 19933. [2022-11-23 15:53:44,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19933 states, 19685 states have (on average 2.830937261874524) internal successors, (55727), 19932 states have internal predecessors, (55727), 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) [2022-11-23 15:53:44,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19933 states to 19933 states and 55727 transitions. [2022-11-23 15:53:44,509 INFO L78 Accepts]: Start accepts. Automaton has 19933 states and 55727 transitions. Word has length 9 [2022-11-23 15:53:44,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:53:44,510 INFO L495 AbstractCegarLoop]: Abstraction has 19933 states and 55727 transitions. [2022-11-23 15:53:44,510 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) [2022-11-23 15:53:44,511 INFO L276 IsEmpty]: Start isEmpty. Operand 19933 states and 55727 transitions. [2022-11-23 15:53:44,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-23 15:53:44,512 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:53:44,512 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2022-11-23 15:53:44,512 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-23 15:53:44,512 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2022-11-23 15:53:44,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:53:44,513 INFO L85 PathProgramCache]: Analyzing trace with hash 930218189, now seen corresponding path program 1 times [2022-11-23 15:53:44,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:53:44,513 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871364164] [2022-11-23 15:53:44,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:53:44,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:53:44,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:53:44,582 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:53:44,583 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:53:44,583 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871364164] [2022-11-23 15:53:44,583 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1871364164] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 15:53:44,583 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1979151491] [2022-11-23 15:53:44,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:53:44,584 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:53:44,584 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_229ec11b-3c86-4a13-914e-f7f2dfd7f204/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:53:44,591 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_229ec11b-3c86-4a13-914e-f7f2dfd7f204/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:53:44,612 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_229ec11b-3c86-4a13-914e-f7f2dfd7f204/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-23 15:53:44,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:53:44,722 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-23 15:53:44,725 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:53:44,782 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:53:44,783 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 15:53:44,783 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1979151491] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:53:44,783 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 15:53:44,784 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2022-11-23 15:53:44,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760423065] [2022-11-23 15:53:44,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:53:44,785 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 15:53:44,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:53:44,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 15:53:44,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-23 15:53:44,786 INFO L87 Difference]: Start difference. First operand 19933 states and 55727 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) [2022-11-23 15:53:45,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:53:45,176 INFO L93 Difference]: Finished difference Result 18924 states and 52740 transitions. [2022-11-23 15:53:45,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 15:53:45,177 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 [2022-11-23 15:53:45,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:53:45,261 INFO L225 Difference]: With dead ends: 18924 [2022-11-23 15:53:45,262 INFO L226 Difference]: Without dead ends: 18924 [2022-11-23 15:53:45,262 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 [2022-11-23 15:53:45,263 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 113 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-23 15:53:45,263 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 22 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-23 15:53:45,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18924 states. [2022-11-23 15:53:45,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18924 to 18924. [2022-11-23 15:53:46,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18924 states, 18725 states have (on average 2.816555407209613) internal successors, (52740), 18923 states have internal predecessors, (52740), 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) [2022-11-23 15:53:46,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18924 states to 18924 states and 52740 transitions. [2022-11-23 15:53:46,082 INFO L78 Accepts]: Start accepts. Automaton has 18924 states and 52740 transitions. Word has length 9 [2022-11-23 15:53:46,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:53:46,082 INFO L495 AbstractCegarLoop]: Abstraction has 18924 states and 52740 transitions. [2022-11-23 15:53:46,082 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) [2022-11-23 15:53:46,083 INFO L276 IsEmpty]: Start isEmpty. Operand 18924 states and 52740 transitions. [2022-11-23 15:53:46,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-23 15:53:46,089 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:53:46,089 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2022-11-23 15:53:46,101 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_229ec11b-3c86-4a13-914e-f7f2dfd7f204/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-23 15:53:46,296 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_229ec11b-3c86-4a13-914e-f7f2dfd7f204/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:53:46,297 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2022-11-23 15:53:46,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:53:46,297 INFO L85 PathProgramCache]: Analyzing trace with hash 586595713, now seen corresponding path program 1 times [2022-11-23 15:53:46,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:53:46,298 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939286219] [2022-11-23 15:53:46,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:53:46,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:53:46,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-23 15:53:46,332 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-23 15:53:46,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-23 15:53:46,357 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-23 15:53:46,357 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-23 15:53:46,358 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (28 of 29 remaining) [2022-11-23 15:53:46,358 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (27 of 29 remaining) [2022-11-23 15:53:46,358 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (26 of 29 remaining) [2022-11-23 15:53:46,358 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (25 of 29 remaining) [2022-11-23 15:53:46,358 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 29 remaining) [2022-11-23 15:53:46,359 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 29 remaining) [2022-11-23 15:53:46,359 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 29 remaining) [2022-11-23 15:53:46,359 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 29 remaining) [2022-11-23 15:53:46,359 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 29 remaining) [2022-11-23 15:53:46,360 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 29 remaining) [2022-11-23 15:53:46,360 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 29 remaining) [2022-11-23 15:53:46,360 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 29 remaining) [2022-11-23 15:53:46,360 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 29 remaining) [2022-11-23 15:53:46,360 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 29 remaining) [2022-11-23 15:53:46,361 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 29 remaining) [2022-11-23 15:53:46,361 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 29 remaining) [2022-11-23 15:53:46,361 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 29 remaining) [2022-11-23 15:53:46,363 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 29 remaining) [2022-11-23 15:53:46,363 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 29 remaining) [2022-11-23 15:53:46,364 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 29 remaining) [2022-11-23 15:53:46,364 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 29 remaining) [2022-11-23 15:53:46,364 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 29 remaining) [2022-11-23 15:53:46,364 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 29 remaining) [2022-11-23 15:53:46,365 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 29 remaining) [2022-11-23 15:53:46,365 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 29 remaining) [2022-11-23 15:53:46,365 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 29 remaining) [2022-11-23 15:53:46,365 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 29 remaining) [2022-11-23 15:53:46,366 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 29 remaining) [2022-11-23 15:53:46,366 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 29 remaining) [2022-11-23 15:53:46,366 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-23 15:53:46,367 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2022-11-23 15:53:46,367 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-23 15:53:46,367 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-11-23 15:53:46,421 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-23 15:53:46,424 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-23 15:53:46,425 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 306 places, 346 transitions, 722 flow [2022-11-23 15:53:46,425 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 306 places, 346 transitions, 722 flow [2022-11-23 15:53:46,425 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 306 places, 346 transitions, 722 flow [2022-11-23 15:53:46,572 INFO L130 PetriNetUnfolder]: 71/578 cut-off events. [2022-11-23 15:53:46,572 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2022-11-23 15:53:46,581 INFO L83 FinitePrefix]: Finished finitePrefix Result has 606 conditions, 578 events. 71/578 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 2405 event pairs, 1 based on Foata normal form. 0/459 useless extension candidates. Maximal degree in co-relation 385. Up to 16 conditions per place. [2022-11-23 15:53:46,615 INFO L119 LiptonReduction]: Number of co-enabled transitions 69864 [2022-11-23 15:53:54,654 INFO L134 LiptonReduction]: Checked pairs total: 206939 [2022-11-23 15:53:54,655 INFO L136 LiptonReduction]: Total number of compositions: 303 [2022-11-23 15:53:54,656 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 127 places, 165 transitions, 360 flow [2022-11-23 15:54:17,655 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 649093 states, 644456 states have (on average 5.162997939347295) internal successors, (3327325), 649092 states have internal predecessors, (3327325), 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) [2022-11-23 15:54:17,686 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 15:54:17,687 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;@1f8da57e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 15:54:17,687 INFO L358 AbstractCegarLoop]: Starting to check reachability of 37 error locations. [2022-11-23 15:54:18,567 INFO L276 IsEmpty]: Start isEmpty. Operand has 649093 states, 644456 states have (on average 5.162997939347295) internal successors, (3327325), 649092 states have internal predecessors, (3327325), 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) [2022-11-23 15:54:18,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-23 15:54:18,567 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:54:18,568 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-23 15:54:18,568 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2022-11-23 15:54:18,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:54:18,570 INFO L85 PathProgramCache]: Analyzing trace with hash 1931202418, now seen corresponding path program 1 times [2022-11-23 15:54:18,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:54:18,570 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889344262] [2022-11-23 15:54:18,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:54:18,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:54:18,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:54:18,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:54:18,640 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:54:18,640 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [889344262] [2022-11-23 15:54:18,640 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [889344262] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:54:18,641 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:54:18,641 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-23 15:54:18,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485523987] [2022-11-23 15:54:18,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:54:18,641 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:54:18,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:54:18,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:54:18,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:54:19,576 INFO L87 Difference]: Start difference. First operand has 649093 states, 644456 states have (on average 5.162997939347295) internal successors, (3327325), 649092 states have internal predecessors, (3327325), 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)