./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_94-alloc_region_racing.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9bd2c7ff 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_f2257e02-953d-4a32-9c30-0335e967c2aa/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2257e02-953d-4a32-9c30-0335e967c2aa/bin/utaipan-verify-t7M7D8N6sZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2257e02-953d-4a32-9c30-0335e967c2aa/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2257e02-953d-4a32-9c30-0335e967c2aa/bin/utaipan-verify-t7M7D8N6sZ/config/TaipanReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_94-alloc_region_racing.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2257e02-953d-4a32-9c30-0335e967c2aa/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2257e02-953d-4a32-9c30-0335e967c2aa/bin/utaipan-verify-t7M7D8N6sZ --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 7faac9952fd378b53dcd8f21391daa9cc75834f7be2a5ad0c70d96fc8524bd08 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 05:20:35,832 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 05:20:35,912 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2257e02-953d-4a32-9c30-0335e967c2aa/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-11-19 05:20:35,917 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 05:20:35,917 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 05:20:35,941 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 05:20:35,941 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 05:20:35,942 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 05:20:35,943 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 05:20:35,943 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 05:20:35,944 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 05:20:35,945 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 05:20:35,945 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 05:20:35,946 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-19 05:20:35,947 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 05:20:35,947 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 05:20:35,948 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-19 05:20:35,948 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-19 05:20:35,949 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 05:20:35,949 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-19 05:20:35,950 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-19 05:20:35,951 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-19 05:20:35,951 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 05:20:35,952 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 05:20:35,952 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 05:20:35,953 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 05:20:35,953 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 05:20:35,954 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 05:20:35,954 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 05:20:35,955 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 05:20:35,955 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 05:20:35,956 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 05:20:35,956 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 05:20:35,956 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 05:20:35,957 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 05:20:35,957 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 05:20:35,958 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:20:35,958 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 05:20:35,959 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 05:20:35,959 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 05:20:35,960 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-19 05:20:35,961 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 05:20:35,961 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 05:20:35,961 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 05:20:35,962 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 05:20:35,962 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_f2257e02-953d-4a32-9c30-0335e967c2aa/bin/utaipan-verify-t7M7D8N6sZ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2257e02-953d-4a32-9c30-0335e967c2aa/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7faac9952fd378b53dcd8f21391daa9cc75834f7be2a5ad0c70d96fc8524bd08 [2023-11-19 05:20:36,257 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 05:20:36,287 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 05:20:36,289 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 05:20:36,290 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 05:20:36,291 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 05:20:36,293 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2257e02-953d-4a32-9c30-0335e967c2aa/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/goblint-regression/28-race_reach_94-alloc_region_racing.i [2023-11-19 05:20:39,348 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 05:20:39,687 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 05:20:39,688 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2257e02-953d-4a32-9c30-0335e967c2aa/sv-benchmarks/c/goblint-regression/28-race_reach_94-alloc_region_racing.i [2023-11-19 05:20:39,710 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2257e02-953d-4a32-9c30-0335e967c2aa/bin/utaipan-verify-t7M7D8N6sZ/data/c0cf8dc0b/bfdce88e5a81484f80470fe2aa35d8c4/FLAGaebd22572 [2023-11-19 05:20:39,726 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2257e02-953d-4a32-9c30-0335e967c2aa/bin/utaipan-verify-t7M7D8N6sZ/data/c0cf8dc0b/bfdce88e5a81484f80470fe2aa35d8c4 [2023-11-19 05:20:39,729 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 05:20:39,731 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 05:20:39,732 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 05:20:39,732 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 05:20:39,738 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 05:20:39,739 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:20:39" (1/1) ... [2023-11-19 05:20:39,740 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@25ba5d98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:20:39, skipping insertion in model container [2023-11-19 05:20:39,740 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:20:39" (1/1) ... [2023-11-19 05:20:39,797 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 05:20:40,557 WARN L240 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_f2257e02-953d-4a32-9c30-0335e967c2aa/sv-benchmarks/c/goblint-regression/28-race_reach_94-alloc_region_racing.i[58135,58148] [2023-11-19 05:20:40,607 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:20:40,622 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 05:20:40,724 WARN L240 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_f2257e02-953d-4a32-9c30-0335e967c2aa/sv-benchmarks/c/goblint-regression/28-race_reach_94-alloc_region_racing.i[58135,58148] [2023-11-19 05:20:40,745 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:20:40,887 INFO L206 MainTranslator]: Completed translation [2023-11-19 05:20:40,887 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:20:40 WrapperNode [2023-11-19 05:20:40,888 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 05:20:40,889 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 05:20:40,890 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 05:20:40,890 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 05:20:40,899 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:20:40" (1/1) ... [2023-11-19 05:20:40,941 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:20:40" (1/1) ... [2023-11-19 05:20:41,016 INFO L138 Inliner]: procedures = 377, calls = 72, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 239 [2023-11-19 05:20:41,018 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 05:20:41,019 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 05:20:41,020 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 05:20:41,020 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 05:20:41,032 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:20:40" (1/1) ... [2023-11-19 05:20:41,032 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:20:40" (1/1) ... [2023-11-19 05:20:41,053 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:20:40" (1/1) ... [2023-11-19 05:20:41,057 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:20:40" (1/1) ... [2023-11-19 05:20:41,070 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:20:40" (1/1) ... [2023-11-19 05:20:41,094 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:20:40" (1/1) ... [2023-11-19 05:20:41,101 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:20:40" (1/1) ... [2023-11-19 05:20:41,110 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:20:40" (1/1) ... [2023-11-19 05:20:41,116 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 05:20:41,125 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 05:20:41,126 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 05:20:41,126 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 05:20:41,127 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:20:40" (1/1) ... [2023-11-19 05:20:41,135 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:20:41,152 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2257e02-953d-4a32-9c30-0335e967c2aa/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:20:41,174 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2257e02-953d-4a32-9c30-0335e967c2aa/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 05:20:41,199 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2257e02-953d-4a32-9c30-0335e967c2aa/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 05:20:41,227 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 05:20:41,228 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-19 05:20:41,228 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 05:20:41,229 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-19 05:20:41,229 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 05:20:41,229 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 05:20:41,231 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-19 05:20:41,232 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-19 05:20:41,233 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 05:20:41,233 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-19 05:20:41,233 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-11-19 05:20:41,233 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-11-19 05:20:41,234 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 05:20:41,234 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 05:20:41,234 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 05:20:41,236 WARN L210 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-19 05:20:41,419 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 05:20:41,421 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 05:20:41,811 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 05:20:41,822 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 05:20:41,822 INFO L302 CfgBuilder]: Removed 23 assume(true) statements. [2023-11-19 05:20:41,827 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:20:41 BoogieIcfgContainer [2023-11-19 05:20:41,828 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 05:20:41,830 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 05:20:41,830 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 05:20:41,834 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 05:20:41,834 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 05:20:39" (1/3) ... [2023-11-19 05:20:41,835 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f211de8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:20:41, skipping insertion in model container [2023-11-19 05:20:41,835 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:20:40" (2/3) ... [2023-11-19 05:20:41,835 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f211de8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:20:41, skipping insertion in model container [2023-11-19 05:20:41,836 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:20:41" (3/3) ... [2023-11-19 05:20:41,837 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_94-alloc_region_racing.i [2023-11-19 05:20:41,846 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-19 05:20:41,855 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 05:20:41,855 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-19 05:20:41,855 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-19 05:20:41,944 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-11-19 05:20:41,986 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-11-19 05:20:42,001 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 228 places, 254 transitions, 515 flow [2023-11-19 05:20:42,004 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 228 places, 254 transitions, 515 flow [2023-11-19 05:20:42,006 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 228 places, 254 transitions, 515 flow [2023-11-19 05:20:42,247 INFO L124 PetriNetUnfolderBase]: 45/365 cut-off events. [2023-11-19 05:20:42,247 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-19 05:20:42,260 INFO L83 FinitePrefix]: Finished finitePrefix Result has 370 conditions, 365 events. 45/365 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1096 event pairs, 0 based on Foata normal form. 0/314 useless extension candidates. Maximal degree in co-relation 199. Up to 8 conditions per place. [2023-11-19 05:20:42,277 INFO L119 LiptonReduction]: Number of co-enabled transitions 19422 [2023-11-19 05:21:40,431 INFO L134 LiptonReduction]: Checked pairs total: 36768 [2023-11-19 05:21:40,431 INFO L136 LiptonReduction]: Total number of compositions: 214 [2023-11-19 05:21:40,441 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 63 places, 86 transitions, 179 flow [2023-11-19 05:21:40,552 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 882 states, 875 states have (on average 2.7565714285714287) internal successors, (2412), 881 states have internal predecessors, (2412), 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) [2023-11-19 05:21:40,572 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 05:21:40,579 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;@3b46f989, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-19 05:21:40,596 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-11-19 05:21:40,600 INFO L276 IsEmpty]: Start isEmpty. Operand has 882 states, 875 states have (on average 2.7565714285714287) internal successors, (2412), 881 states have internal predecessors, (2412), 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) [2023-11-19 05:21:40,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-19 05:21:40,605 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:21:40,606 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2023-11-19 05:21:40,607 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-11-19 05:21:40,612 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:21:40,612 INFO L85 PathProgramCache]: Analyzing trace with hash -1812494669, now seen corresponding path program 1 times [2023-11-19 05:21:40,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:21:40,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463765448] [2023-11-19 05:21:40,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:21:40,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:21:40,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 05:21:40,815 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 05:21:40,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 05:21:40,936 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-11-19 05:21:40,939 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-19 05:21:40,940 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2023-11-19 05:21:40,942 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 4 remaining) [2023-11-19 05:21:40,943 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 4 remaining) [2023-11-19 05:21:40,943 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 4 remaining) [2023-11-19 05:21:40,944 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 05:21:40,947 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-11-19 05:21:40,951 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-19 05:21:40,951 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-11-19 05:21:41,036 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-19 05:21:41,049 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-11-19 05:21:41,050 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 302 places, 339 transitions, 694 flow [2023-11-19 05:21:41,051 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 302 places, 339 transitions, 694 flow [2023-11-19 05:21:41,051 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 302 places, 339 transitions, 694 flow [2023-11-19 05:21:41,201 INFO L124 PetriNetUnfolderBase]: 76/587 cut-off events. [2023-11-19 05:21:41,202 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-19 05:21:41,213 INFO L83 FinitePrefix]: Finished finitePrefix Result has 599 conditions, 587 events. 76/587 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 2349 event pairs, 0 based on Foata normal form. 0/502 useless extension candidates. Maximal degree in co-relation 367. Up to 12 conditions per place. [2023-11-19 05:21:41,250 INFO L119 LiptonReduction]: Number of co-enabled transitions 54448