./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_86-lists_racing.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version cf1a7837 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_8468e46c-e367-49b5-8c6b-7747da39cf01/bin/utaipan-verify-NcY6lQBIFX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8468e46c-e367-49b5-8c6b-7747da39cf01/bin/utaipan-verify-NcY6lQBIFX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8468e46c-e367-49b5-8c6b-7747da39cf01/bin/utaipan-verify-NcY6lQBIFX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8468e46c-e367-49b5-8c6b-7747da39cf01/bin/utaipan-verify-NcY6lQBIFX/config/TaipanReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_86-lists_racing.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8468e46c-e367-49b5-8c6b-7747da39cf01/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8468e46c-e367-49b5-8c6b-7747da39cf01/bin/utaipan-verify-NcY6lQBIFX --witnessprinter.witness.filename witness --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 db5eab03de8fef3e653289c5dcf0b220be6d8b09a4df3c07d6d5a066426e755a --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 00:11:48,653 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 00:11:48,772 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8468e46c-e367-49b5-8c6b-7747da39cf01/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-Overflow-32bit-Taipan_Default.epf [2023-11-12 00:11:48,782 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 00:11:48,783 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 00:11:48,823 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 00:11:48,824 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 00:11:48,824 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 00:11:48,825 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 00:11:48,830 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 00:11:48,831 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-12 00:11:48,832 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-12 00:11:48,832 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-12 00:11:48,834 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-12 00:11:48,835 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-12 00:11:48,835 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-12 00:11:48,835 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-12 00:11:48,836 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-12 00:11:48,836 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-12 00:11:48,837 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-12 00:11:48,837 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-12 00:11:48,838 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-12 00:11:48,839 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 00:11:48,840 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 00:11:48,840 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 00:11:48,841 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 00:11:48,841 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 00:11:48,841 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 00:11:48,842 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 00:11:48,842 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 00:11:48,843 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 00:11:48,844 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-12 00:11:48,844 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-12 00:11:48,844 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 00:11:48,845 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 00:11:48,874 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 00:11:48,874 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 00:11:48,874 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 00:11:48,874 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:11:48,875 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 00:11:48,875 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 00:11:48,875 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 00:11:48,875 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-12 00:11:48,875 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 00:11:48,876 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 00:11:48,876 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-12 00:11:48,876 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 00:11:48,876 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_8468e46c-e367-49b5-8c6b-7747da39cf01/bin/utaipan-verify-NcY6lQBIFX/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8468e46c-e367-49b5-8c6b-7747da39cf01/bin/utaipan-verify-NcY6lQBIFX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> db5eab03de8fef3e653289c5dcf0b220be6d8b09a4df3c07d6d5a066426e755a [2023-11-12 00:11:49,175 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 00:11:49,205 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 00:11:49,208 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 00:11:49,210 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 00:11:49,211 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 00:11:49,212 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8468e46c-e367-49b5-8c6b-7747da39cf01/bin/utaipan-verify-NcY6lQBIFX/../../sv-benchmarks/c/goblint-regression/28-race_reach_86-lists_racing.i [2023-11-12 00:11:52,223 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 00:11:52,571 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 00:11:52,574 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8468e46c-e367-49b5-8c6b-7747da39cf01/sv-benchmarks/c/goblint-regression/28-race_reach_86-lists_racing.i [2023-11-12 00:11:52,601 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8468e46c-e367-49b5-8c6b-7747da39cf01/bin/utaipan-verify-NcY6lQBIFX/data/fbc8110cb/1de5ee6e583040f3857d9b76e8597bfa/FLAG859c2a50d [2023-11-12 00:11:52,622 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8468e46c-e367-49b5-8c6b-7747da39cf01/bin/utaipan-verify-NcY6lQBIFX/data/fbc8110cb/1de5ee6e583040f3857d9b76e8597bfa [2023-11-12 00:11:52,625 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 00:11:52,638 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 00:11:52,640 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 00:11:52,640 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 00:11:52,653 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 00:11:52,655 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:11:52" (1/1) ... [2023-11-12 00:11:52,656 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26ab9bbf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:11:52, skipping insertion in model container [2023-11-12 00:11:52,657 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:11:52" (1/1) ... [2023-11-12 00:11:52,733 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 00:11:53,258 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:11:53,359 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 00:11:53,453 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:11:53,543 INFO L206 MainTranslator]: Completed translation [2023-11-12 00:11:53,544 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:11:53 WrapperNode [2023-11-12 00:11:53,544 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 00:11:53,546 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 00:11:53,546 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 00:11:53,546 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 00:11:53,554 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:11:53" (1/1) ... [2023-11-12 00:11:53,597 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:11:53" (1/1) ... [2023-11-12 00:11:53,648 INFO L138 Inliner]: procedures = 278, calls = 61, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 253 [2023-11-12 00:11:53,650 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 00:11:53,651 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 00:11:53,651 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 00:11:53,651 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 00:11:53,667 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:11:53" (1/1) ... [2023-11-12 00:11:53,667 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:11:53" (1/1) ... [2023-11-12 00:11:53,684 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:11:53" (1/1) ... [2023-11-12 00:11:53,685 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:11:53" (1/1) ... [2023-11-12 00:11:53,710 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:11:53" (1/1) ... [2023-11-12 00:11:53,727 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:11:53" (1/1) ... [2023-11-12 00:11:53,730 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:11:53" (1/1) ... [2023-11-12 00:11:53,737 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:11:53" (1/1) ... [2023-11-12 00:11:53,741 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 00:11:53,742 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 00:11:53,743 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 00:11:53,743 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 00:11:53,744 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:11:53" (1/1) ... [2023-11-12 00:11:53,751 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:11:53,763 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8468e46c-e367-49b5-8c6b-7747da39cf01/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:11:53,778 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8468e46c-e367-49b5-8c6b-7747da39cf01/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 00:11:53,789 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8468e46c-e367-49b5-8c6b-7747da39cf01/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 00:11:53,832 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-12 00:11:53,832 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-12 00:11:53,833 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2023-11-12 00:11:53,833 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2023-11-12 00:11:53,833 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-12 00:11:53,833 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-12 00:11:53,834 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2023-11-12 00:11:53,834 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2023-11-12 00:11:53,834 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-12 00:11:53,834 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-12 00:11:53,835 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-12 00:11:53,835 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 00:11:53,835 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-12 00:11:53,835 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 00:11:53,836 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 00:11:53,836 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 00:11:53,838 WARN L210 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-12 00:11:54,033 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 00:11:54,035 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 00:11:54,490 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 00:11:54,502 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 00:11:54,503 INFO L302 CfgBuilder]: Removed 16 assume(true) statements. [2023-11-12 00:11:54,505 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:11:54 BoogieIcfgContainer [2023-11-12 00:11:54,506 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 00:11:54,508 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 00:11:54,508 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 00:11:54,512 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 00:11:54,512 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 12:11:52" (1/3) ... [2023-11-12 00:11:54,513 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1851a1b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:11:54, skipping insertion in model container [2023-11-12 00:11:54,513 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:11:53" (2/3) ... [2023-11-12 00:11:54,514 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1851a1b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:11:54, skipping insertion in model container [2023-11-12 00:11:54,514 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:11:54" (3/3) ... [2023-11-12 00:11:54,515 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_86-lists_racing.i [2023-11-12 00:11:54,525 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-12 00:11:54,536 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 00:11:54,537 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2023-11-12 00:11:54,537 INFO L521 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-12 00:11:54,674 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-11-12 00:11:54,714 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-11-12 00:11:54,729 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 258 places, 279 transitions, 578 flow [2023-11-12 00:11:54,732 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 258 places, 279 transitions, 578 flow [2023-11-12 00:11:54,734 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 258 places, 279 transitions, 578 flow [2023-11-12 00:11:54,923 INFO L124 PetriNetUnfolderBase]: 56/530 cut-off events. [2023-11-12 00:11:54,923 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-11-12 00:11:54,936 INFO L83 FinitePrefix]: Finished finitePrefix Result has 547 conditions, 530 events. 56/530 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 2265 event pairs, 0 based on Foata normal form. 0/438 useless extension candidates. Maximal degree in co-relation 264. Up to 8 conditions per place. [2023-11-12 00:11:55,016 INFO L119 LiptonReduction]: Number of co-enabled transitions 25014 [2023-11-12 00:12:55,181 INFO L134 LiptonReduction]: Checked pairs total: 39522 [2023-11-12 00:12:55,182 INFO L136 LiptonReduction]: Total number of compositions: 259 [2023-11-12 00:12:55,190 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 69 places, 82 transitions, 184 flow [2023-11-12 00:12:55,425 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 3740 states, 3656 states have (on average 3.1780634573304156) internal successors, (11619), 3739 states have internal predecessors, (11619), 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) [2023-11-12 00:12:55,446 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 00:12:55,454 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=LoopHeads, 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;@5416e0f9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-12 00:12:55,454 INFO L358 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2023-11-12 00:12:55,470 INFO L276 IsEmpty]: Start isEmpty. Operand has 3740 states, 3656 states have (on average 3.1780634573304156) internal successors, (11619), 3739 states have internal predecessors, (11619), 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) [2023-11-12 00:12:55,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2023-11-12 00:12:55,476 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:12:55,477 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2023-11-12 00:12:55,477 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-12 00:12:55,483 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:12:55,484 INFO L85 PathProgramCache]: Analyzing trace with hash 35291, now seen corresponding path program 1 times [2023-11-12 00:12:55,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:12:55,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [914512879] [2023-11-12 00:12:55,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:12:55,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:12:55,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:12:55,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:12:55,756 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:12:55,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [914512879] [2023-11-12 00:12:55,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [914512879] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:12:55,758 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:12:55,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-12 00:12:55,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085404808] [2023-11-12 00:12:55,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:12:55,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-12 00:12:55,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:12:55,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-12 00:12:55,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-12 00:12:55,819 INFO L87 Difference]: Start difference. First operand has 3740 states, 3656 states have (on average 3.1780634573304156) internal successors, (11619), 3739 states have internal predecessors, (11619), 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 2 states, 1 states have (on average 2.0) internal successors, (2), 2 states have internal predecessors, (2), 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) [2023-11-12 00:12:56,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:12:56,096 INFO L93 Difference]: Finished difference Result 3739 states and 10078 transitions. [2023-11-12 00:12:56,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-12 00:12:56,099 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 2.0) internal successors, (2), 2 states have internal predecessors, (2), 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 2 [2023-11-12 00:12:56,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:12:56,153 INFO L225 Difference]: With dead ends: 3739 [2023-11-12 00:12:56,154 INFO L226 Difference]: Without dead ends: 3539 [2023-11-12 00:12:56,155 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-12 00:12:56,159 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-12 00:12:56,160 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 8 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-12 00:12:56,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3539 states. [2023-11-12 00:12:56,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3539 to 3539. [2023-11-12 00:12:56,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3539 states, 3461 states have (on average 2.749494365790234) internal successors, (9516), 3538 states have internal predecessors, (9516), 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) [2023-11-12 00:12:56,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3539 states to 3539 states and 9516 transitions. [2023-11-12 00:12:56,409 INFO L78 Accepts]: Start accepts. Automaton has 3539 states and 9516 transitions. Word has length 2 [2023-11-12 00:12:56,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:12:56,410 INFO L495 AbstractCegarLoop]: Abstraction has 3539 states and 9516 transitions. [2023-11-12 00:12:56,410 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 2.0) internal successors, (2), 2 states have internal predecessors, (2), 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) [2023-11-12 00:12:56,411 INFO L276 IsEmpty]: Start isEmpty. Operand 3539 states and 9516 transitions. [2023-11-12 00:12:56,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2023-11-12 00:12:56,411 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:12:56,411 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2023-11-12 00:12:56,412 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-12 00:12:56,412 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-12 00:12:56,412 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:12:56,413 INFO L85 PathProgramCache]: Analyzing trace with hash 35292, now seen corresponding path program 1 times [2023-11-12 00:12:56,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:12:56,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1022015327] [2023-11-12 00:12:56,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:12:56,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:12:56,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat