./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_03-munge_racing.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b36de2a-f9f3-473a-a42a-7597bf70d3b0/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b36de2a-f9f3-473a-a42a-7597bf70d3b0/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b36de2a-f9f3-473a-a42a-7597bf70d3b0/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b36de2a-f9f3-473a-a42a-7597bf70d3b0/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_03-munge_racing.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b36de2a-f9f3-473a-a42a-7597bf70d3b0/bin/utaipan-gh47qXpMRh/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b36de2a-f9f3-473a-a42a-7597bf70d3b0/bin/utaipan-gh47qXpMRh --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 7df5d4e763d99c6ca9aa3d4daa03dcc5b8b9d65829db9a89ff85ebe5a14f3ac3 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-14 11:22:12,160 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 11:22:12,162 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 11:22:12,181 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 11:22:12,182 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 11:22:12,183 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 11:22:12,184 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 11:22:12,185 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 11:22:12,187 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 11:22:12,188 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 11:22:12,189 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 11:22:12,190 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 11:22:12,190 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 11:22:12,191 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 11:22:12,192 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 11:22:12,193 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 11:22:12,194 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 11:22:12,195 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 11:22:12,197 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 11:22:12,198 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 11:22:12,200 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 11:22:12,201 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 11:22:12,202 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 11:22:12,203 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 11:22:12,207 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 11:22:12,207 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 11:22:12,207 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 11:22:12,209 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 11:22:12,209 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 11:22:12,210 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 11:22:12,210 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 11:22:12,211 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 11:22:12,211 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 11:22:12,212 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 11:22:12,213 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 11:22:12,213 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 11:22:12,214 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 11:22:12,214 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 11:22:12,214 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 11:22:12,215 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 11:22:12,215 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 11:22:12,216 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b36de2a-f9f3-473a-a42a-7597bf70d3b0/bin/utaipan-gh47qXpMRh/config/svcomp-Overflow-32bit-Taipan_Default.epf [2022-12-14 11:22:12,238 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 11:22:12,238 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 11:22:12,238 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 11:22:12,238 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 11:22:12,239 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 11:22:12,239 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 11:22:12,239 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 11:22:12,239 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 11:22:12,240 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 11:22:12,240 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 11:22:12,240 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 11:22:12,240 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 11:22:12,240 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 11:22:12,240 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 11:22:12,241 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 11:22:12,241 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 11:22:12,241 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 11:22:12,241 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 11:22:12,241 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 11:22:12,242 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 11:22:12,242 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-14 11:22:12,242 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 11:22:12,242 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 11:22:12,242 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 11:22:12,242 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 11:22:12,242 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 11:22:12,242 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 11:22:12,243 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-12-14 11:22:12,243 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 11:22:12,243 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 11:22:12,243 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 11:22:12,243 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 11:22:12,243 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 11:22:12,244 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 11:22:12,244 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 11:22:12,244 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 11:22:12,244 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 11:22:12,244 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 11:22:12,244 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 11:22:12,244 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 11:22:12,244 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 11:22:12,244 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 11:22:12,245 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 11:22:12,245 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_4b36de2a-f9f3-473a-a42a-7597bf70d3b0/bin/utaipan-gh47qXpMRh/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b36de2a-f9f3-473a-a42a-7597bf70d3b0/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7df5d4e763d99c6ca9aa3d4daa03dcc5b8b9d65829db9a89ff85ebe5a14f3ac3 [2022-12-14 11:22:12,418 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 11:22:12,435 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 11:22:12,437 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 11:22:12,438 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 11:22:12,439 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 11:22:12,439 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b36de2a-f9f3-473a-a42a-7597bf70d3b0/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/goblint-regression/28-race_reach_03-munge_racing.i [2022-12-14 11:22:15,066 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 11:22:15,234 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 11:22:15,234 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b36de2a-f9f3-473a-a42a-7597bf70d3b0/sv-benchmarks/c/goblint-regression/28-race_reach_03-munge_racing.i [2022-12-14 11:22:15,242 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b36de2a-f9f3-473a-a42a-7597bf70d3b0/bin/utaipan-gh47qXpMRh/data/1c52a9bff/764e3a83d4e84b548fe24c1a8eafb3d2/FLAG183444ef2 [2022-12-14 11:22:15,253 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b36de2a-f9f3-473a-a42a-7597bf70d3b0/bin/utaipan-gh47qXpMRh/data/1c52a9bff/764e3a83d4e84b548fe24c1a8eafb3d2 [2022-12-14 11:22:15,256 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 11:22:15,257 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 11:22:15,259 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 11:22:15,259 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 11:22:15,263 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 11:22:15,263 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 11:22:15" (1/1) ... [2022-12-14 11:22:15,264 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f1d1828 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:22:15, skipping insertion in model container [2022-12-14 11:22:15,264 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 11:22:15" (1/1) ... [2022-12-14 11:22:15,272 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 11:22:15,307 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 11:22:15,513 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_4b36de2a-f9f3-473a-a42a-7597bf70d3b0/sv-benchmarks/c/goblint-regression/28-race_reach_03-munge_racing.i[30176,30189] [2022-12-14 11:22:15,532 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 11:22:15,542 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 11:22:15,568 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_4b36de2a-f9f3-473a-a42a-7597bf70d3b0/sv-benchmarks/c/goblint-regression/28-race_reach_03-munge_racing.i[30176,30189] [2022-12-14 11:22:15,575 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 11:22:15,598 INFO L208 MainTranslator]: Completed translation [2022-12-14 11:22:15,598 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:22:15 WrapperNode [2022-12-14 11:22:15,598 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 11:22:15,599 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 11:22:15,599 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 11:22:15,599 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 11:22:15,605 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:22:15" (1/1) ... [2022-12-14 11:22:15,614 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:22:15" (1/1) ... [2022-12-14 11:22:15,632 INFO L138 Inliner]: procedures = 172, calls = 43, calls flagged for inlining = 5, calls inlined = 6, statements flattened = 215 [2022-12-14 11:22:15,632 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 11:22:15,633 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 11:22:15,633 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 11:22:15,633 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 11:22:15,639 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:22:15" (1/1) ... [2022-12-14 11:22:15,639 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:22:15" (1/1) ... [2022-12-14 11:22:15,641 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:22:15" (1/1) ... [2022-12-14 11:22:15,642 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:22:15" (1/1) ... [2022-12-14 11:22:15,646 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:22:15" (1/1) ... [2022-12-14 11:22:15,649 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:22:15" (1/1) ... [2022-12-14 11:22:15,651 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:22:15" (1/1) ... [2022-12-14 11:22:15,652 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:22:15" (1/1) ... [2022-12-14 11:22:15,654 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 11:22:15,655 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 11:22:15,655 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 11:22:15,655 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 11:22:15,656 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:22:15" (1/1) ... [2022-12-14 11:22:15,660 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 11:22:15,667 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b36de2a-f9f3-473a-a42a-7597bf70d3b0/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 11:22:15,677 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b36de2a-f9f3-473a-a42a-7597bf70d3b0/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 11:22:15,679 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b36de2a-f9f3-473a-a42a-7597bf70d3b0/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 11:22:15,702 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-14 11:22:15,702 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2022-12-14 11:22:15,702 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2022-12-14 11:22:15,702 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-14 11:22:15,702 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-12-14 11:22:15,702 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 11:22:15,702 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-14 11:22:15,702 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2022-12-14 11:22:15,702 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2022-12-14 11:22:15,703 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-14 11:22:15,703 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 11:22:15,703 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 11:22:15,703 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 11:22:15,704 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-12-14 11:22:15,804 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 11:22:15,805 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 11:22:16,048 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 11:22:16,054 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 11:22:16,054 INFO L300 CfgBuilder]: Removed 24 assume(true) statements. [2022-12-14 11:22:16,056 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 11:22:16 BoogieIcfgContainer [2022-12-14 11:22:16,056 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 11:22:16,058 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 11:22:16,058 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 11:22:16,060 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 11:22:16,061 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 11:22:15" (1/3) ... [2022-12-14 11:22:16,061 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ddc805 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 11:22:16, skipping insertion in model container [2022-12-14 11:22:16,061 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:22:15" (2/3) ... [2022-12-14 11:22:16,062 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ddc805 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 11:22:16, skipping insertion in model container [2022-12-14 11:22:16,062 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 11:22:16" (3/3) ... [2022-12-14 11:22:16,063 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_03-munge_racing.i [2022-12-14 11:22:16,069 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-12-14 11:22:16,077 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 11:22:16,077 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2022-12-14 11:22:16,077 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-14 11:22:16,140 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-12-14 11:22:16,169 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-14 11:22:16,182 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 211 places, 238 transitions, 498 flow [2022-12-14 11:22:16,184 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 211 places, 238 transitions, 498 flow [2022-12-14 11:22:16,186 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 211 places, 238 transitions, 498 flow [2022-12-14 11:22:16,304 INFO L130 PetriNetUnfolder]: 58/429 cut-off events. [2022-12-14 11:22:16,304 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2022-12-14 11:22:16,311 INFO L83 FinitePrefix]: Finished finitePrefix Result has 449 conditions, 429 events. 58/429 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 1902 event pairs, 0 based on Foata normal form. 0/335 useless extension candidates. Maximal degree in co-relation 227. Up to 8 conditions per place. [2022-12-14 11:22:16,320 INFO L119 LiptonReduction]: Number of co-enabled transitions 23936 [2022-12-14 11:22:19,943 INFO L134 LiptonReduction]: Checked pairs total: 44858 [2022-12-14 11:22:19,943 INFO L136 LiptonReduction]: Total number of compositions: 210 [2022-12-14 11:22:19,948 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 72 places, 93 transitions, 208 flow [2022-12-14 11:22:20,093 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 5708 states, 5474 states have (on average 3.817500913408842) internal successors, (20897), 5707 states have internal predecessors, (20897), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:22:20,107 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 11:22:20,111 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;@70e6d795, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 11:22:20,111 INFO L358 AbstractCegarLoop]: Starting to check reachability of 26 error locations. [2022-12-14 11:22:20,122 INFO L276 IsEmpty]: Start isEmpty. Operand has 5708 states, 5474 states have (on average 3.817500913408842) internal successors, (20897), 5707 states have internal predecessors, (20897), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:22:20,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-12-14 11:22:20,126 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:22:20,126 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-12-14 11:22:20,127 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2022-12-14 11:22:20,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:22:20,130 INFO L85 PathProgramCache]: Analyzing trace with hash 29849042, now seen corresponding path program 1 times [2022-12-14 11:22:20,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:22:20,138 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433726524] [2022-12-14 11:22:20,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:22:20,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:22:20,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:22:20,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:22:20,313 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:22:20,313 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433726524] [2022-12-14 11:22:20,314 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [433726524] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:22:20,314 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 11:22:20,314 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-14 11:22:20,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661617620] [2022-12-14 11:22:20,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:22:20,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 11:22:20,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:22:20,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 11:22:20,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 11:22:20,357 INFO L87 Difference]: Start difference. First operand has 5708 states, 5474 states have (on average 3.817500913408842) internal successors, (20897), 5707 states have internal predecessors, (20897), 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) [2022-12-14 11:22:20,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:22:20,517 INFO L93 Difference]: Finished difference Result 5538 states and 15537 transitions. [2022-12-14 11:22:20,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 11:22:20,519 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2022-12-14 11:22:20,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:22:20,552 INFO L225 Difference]: With dead ends: 5538 [2022-12-14 11:22:20,553 INFO L226 Difference]: Without dead ends: 5454 [2022-12-14 11:22:20,553 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 [2022-12-14 11:22:20,555 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 21 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 11:22:20,556 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 20 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 11:22:20,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5454 states. [2022-12-14 11:22:20,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5454 to 5454. [2022-12-14 11:22:20,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5454 states, 5250 states have (on average 2.9123809523809525) internal successors, (15290), 5453 states have internal predecessors, (15290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:22:20,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5454 states to 5454 states and 15290 transitions. [2022-12-14 11:22:20,777 INFO L78 Accepts]: Start accepts. Automaton has 5454 states and 15290 transitions. Word has length 4 [2022-12-14 11:22:20,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:22:20,778 INFO L495 AbstractCegarLoop]: Abstraction has 5454 states and 15290 transitions. [2022-12-14 11:22:20,778 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:22:20,778 INFO L276 IsEmpty]: Start isEmpty. Operand 5454 states and 15290 transitions. [2022-12-14 11:22:20,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-12-14 11:22:20,778 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:22:20,778 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2022-12-14 11:22:20,779 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 11:22:20,779 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2022-12-14 11:22:20,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:22:20,780 INFO L85 PathProgramCache]: Analyzing trace with hash -1379811038, now seen corresponding path program 1 times [2022-12-14 11:22:20,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:22:20,780 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649314351] [2022-12-14 11:22:20,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:22:20,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:22:20,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 11:22:20,802 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-14 11:22:20,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 11:22:20,827 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-12-14 11:22:20,828 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-14 11:22:20,829 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (25 of 26 remaining) [2022-12-14 11:22:20,830 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 26 remaining) [2022-12-14 11:22:20,831 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 26 remaining) [2022-12-14 11:22:20,831 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 26 remaining) [2022-12-14 11:22:20,831 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 26 remaining) [2022-12-14 11:22:20,832 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 26 remaining) [2022-12-14 11:22:20,832 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 26 remaining) [2022-12-14 11:22:20,832 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 26 remaining) [2022-12-14 11:22:20,832 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 26 remaining) [2022-12-14 11:22:20,832 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 26 remaining) [2022-12-14 11:22:20,833 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 26 remaining) [2022-12-14 11:22:20,833 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 26 remaining) [2022-12-14 11:22:20,833 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 26 remaining) [2022-12-14 11:22:20,833 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 26 remaining) [2022-12-14 11:22:20,833 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 26 remaining) [2022-12-14 11:22:20,834 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 26 remaining) [2022-12-14 11:22:20,834 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 26 remaining) [2022-12-14 11:22:20,834 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 26 remaining) [2022-12-14 11:22:20,834 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 26 remaining) [2022-12-14 11:22:20,834 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 26 remaining) [2022-12-14 11:22:20,835 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 26 remaining) [2022-12-14 11:22:20,835 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 26 remaining) [2022-12-14 11:22:20,835 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 26 remaining) [2022-12-14 11:22:20,835 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 26 remaining) [2022-12-14 11:22:20,835 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 26 remaining) [2022-12-14 11:22:20,836 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 26 remaining) [2022-12-14 11:22:20,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-14 11:22:20,838 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2022-12-14 11:22:20,839 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-12-14 11:22:20,839 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-12-14 11:22:20,873 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2022-12-14 11:22:20,877 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-14 11:22:20,877 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 321 places, 372 transitions, 792 flow [2022-12-14 11:22:20,877 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 321 places, 372 transitions, 792 flow [2022-12-14 11:22:20,878 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 321 places, 372 transitions, 792 flow [2022-12-14 11:22:21,078 INFO L130 PetriNetUnfolder]: 197/1295 cut-off events. [2022-12-14 11:22:21,078 INFO L131 PetriNetUnfolder]: For 72/78 co-relation queries the response was YES. [2022-12-14 11:22:21,088 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1392 conditions, 1295 events. 197/1295 cut-off events. For 72/78 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 8186 event pairs, 1 based on Foata normal form. 0/1003 useless extension candidates. Maximal degree in co-relation 778. Up to 32 conditions per place. [2022-12-14 11:22:21,130 INFO L119 LiptonReduction]: Number of co-enabled transitions 83200 [2022-12-14 11:22:25,509 INFO L134 LiptonReduction]: Checked pairs total: 168783 [2022-12-14 11:22:25,509 INFO L136 LiptonReduction]: Total number of compositions: 316 [2022-12-14 11:22:25,510 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 120 places, 166 transitions, 380 flow [2022-12-14 11:24:06,321 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 2981240 states, 2973291 states have (on average 6.666165202127877) internal successors, (19820449), 2981239 states have internal predecessors, (19820449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:24:06,322 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 11:24:06,323 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;@70e6d795, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 11:24:06,323 INFO L358 AbstractCegarLoop]: Starting to check reachability of 34 error locations. [2022-12-14 11:24:12,746 INFO L276 IsEmpty]: Start isEmpty. Operand has 2981240 states, 2973291 states have (on average 6.666165202127877) internal successors, (19820449), 2981239 states have internal predecessors, (19820449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:24:12,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-12-14 11:24:12,747 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:24:12,747 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-12-14 11:24:12,747 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2022-12-14 11:24:12,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:24:12,748 INFO L85 PathProgramCache]: Analyzing trace with hash 1707547595, now seen corresponding path program 1 times [2022-12-14 11:24:12,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:24:12,748 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469141432] [2022-12-14 11:24:12,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:24:12,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:24:12,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:24:12,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:24:12,799 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:24:12,799 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [469141432] [2022-12-14 11:24:12,799 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [469141432] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:24:12,799 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 11:24:12,799 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-14 11:24:12,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290888421] [2022-12-14 11:24:12,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:24:12,800 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 11:24:12,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:24:12,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 11:24:12,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6