./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/parallel-barrier.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows 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_02528487-134e-42b4-bd52-56fa43653249/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02528487-134e-42b4-bd52-56fa43653249/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_02528487-134e-42b4-bd52-56fa43653249/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02528487-134e-42b4-bd52-56fa43653249/bin/utaipan-verify-t7M7D8N6sZ/config/TaipanReach.xml -i ../../sv-benchmarks/c/weaver/parallel-barrier.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02528487-134e-42b4-bd52-56fa43653249/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02528487-134e-42b4-bd52-56fa43653249/bin/utaipan-verify-t7M7D8N6sZ --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 504de2e820c504d0b98f5b71c19407f1b43c0dd9338639fad4f2fe6ea2f6854f --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 04:50:36,666 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 04:50:36,821 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02528487-134e-42b4-bd52-56fa43653249/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Overflow-32bit-Taipan_Default.epf [2023-11-19 04:50:36,830 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 04:50:36,832 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 04:50:36,881 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 04:50:36,882 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 04:50:36,883 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 04:50:36,884 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 04:50:36,890 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 04:50:36,891 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 04:50:36,893 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 04:50:36,893 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 04:50:36,896 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-19 04:50:36,896 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 04:50:36,897 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 04:50:36,897 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-19 04:50:36,898 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-19 04:50:36,898 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 04:50:36,899 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-19 04:50:36,900 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-19 04:50:36,900 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-19 04:50:36,902 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 04:50:36,903 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 04:50:36,903 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 04:50:36,904 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 04:50:36,904 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 04:50:36,905 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 04:50:36,905 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 04:50:36,906 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 04:50:36,908 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 04:50:36,908 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-19 04:50:36,908 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 04:50:36,909 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 04:50:36,909 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 04:50:36,909 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 04:50:36,910 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 04:50:36,910 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 04:50:36,910 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 04:50:36,911 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 04:50:36,911 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 04:50:36,912 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 04:50:36,912 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-19 04:50:36,912 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 04:50:36,913 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 04:50:36,913 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 04:50:36,914 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 04:50:36,914 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_02528487-134e-42b4-bd52-56fa43653249/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02528487-134e-42b4-bd52-56fa43653249/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 504de2e820c504d0b98f5b71c19407f1b43c0dd9338639fad4f2fe6ea2f6854f [2023-11-19 04:50:37,288 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 04:50:37,326 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 04:50:37,330 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 04:50:37,333 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 04:50:37,333 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 04:50:37,335 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02528487-134e-42b4-bd52-56fa43653249/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/weaver/parallel-barrier.wvr.c [2023-11-19 04:50:40,967 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 04:50:41,257 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 04:50:41,257 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02528487-134e-42b4-bd52-56fa43653249/sv-benchmarks/c/weaver/parallel-barrier.wvr.c [2023-11-19 04:50:41,270 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02528487-134e-42b4-bd52-56fa43653249/bin/utaipan-verify-t7M7D8N6sZ/data/f98bdeef6/c04d09d5922c4b41ace729677e62bed7/FLAG5a353247e [2023-11-19 04:50:41,292 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02528487-134e-42b4-bd52-56fa43653249/bin/utaipan-verify-t7M7D8N6sZ/data/f98bdeef6/c04d09d5922c4b41ace729677e62bed7 [2023-11-19 04:50:41,299 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 04:50:41,306 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 04:50:41,311 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 04:50:41,311 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 04:50:41,318 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 04:50:41,319 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:50:41" (1/1) ... [2023-11-19 04:50:41,320 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2cc80a6b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:50:41, skipping insertion in model container [2023-11-19 04:50:41,320 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:50:41" (1/1) ... [2023-11-19 04:50:41,362 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 04:50:41,600 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:50:41,615 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 04:50:41,689 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:50:41,709 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 04:50:41,709 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 04:50:41,719 INFO L206 MainTranslator]: Completed translation [2023-11-19 04:50:41,720 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:50:41 WrapperNode [2023-11-19 04:50:41,720 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 04:50:41,722 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 04:50:41,722 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 04:50:41,722 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 04:50:41,732 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:50:41" (1/1) ... [2023-11-19 04:50:41,745 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:50:41" (1/1) ... [2023-11-19 04:50:41,797 INFO L138 Inliner]: procedures = 25, calls = 99, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 288 [2023-11-19 04:50:41,798 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 04:50:41,799 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 04:50:41,799 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 04:50:41,800 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 04:50:41,811 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:50:41" (1/1) ... [2023-11-19 04:50:41,812 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:50:41" (1/1) ... [2023-11-19 04:50:41,818 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:50:41" (1/1) ... [2023-11-19 04:50:41,819 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:50:41" (1/1) ... [2023-11-19 04:50:41,839 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:50:41" (1/1) ... [2023-11-19 04:50:41,842 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:50:41" (1/1) ... [2023-11-19 04:50:41,846 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:50:41" (1/1) ... [2023-11-19 04:50:41,848 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:50:41" (1/1) ... [2023-11-19 04:50:41,854 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 04:50:41,855 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 04:50:41,855 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 04:50:41,855 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 04:50:41,873 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:50:41" (1/1) ... [2023-11-19 04:50:41,895 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 04:50:41,926 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02528487-134e-42b4-bd52-56fa43653249/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:50:41,941 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02528487-134e-42b4-bd52-56fa43653249/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 04:50:41,952 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02528487-134e-42b4-bd52-56fa43653249/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 04:50:42,024 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 04:50:42,024 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 04:50:42,024 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 04:50:42,024 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 04:50:42,024 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-19 04:50:42,027 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-19 04:50:42,027 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-19 04:50:42,027 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-19 04:50:42,027 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-19 04:50:42,028 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-19 04:50:42,028 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-11-19 04:50:42,028 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-11-19 04:50:42,028 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 04:50:42,028 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2023-11-19 04:50:42,028 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2023-11-19 04:50:42,028 INFO L130 BoogieDeclarations]: Found specification of procedure thread6 [2023-11-19 04:50:42,029 INFO L138 BoogieDeclarations]: Found implementation of procedure thread6 [2023-11-19 04:50:42,029 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-19 04:50:42,029 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-19 04:50:42,029 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 04:50:42,029 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 04:50:42,029 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 04:50:42,035 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 04:50:42,192 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 04:50:42,197 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 04:50:42,798 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 04:50:42,976 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 04:50:42,984 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-19 04:50:42,996 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:50:42 BoogieIcfgContainer [2023-11-19 04:50:42,996 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 04:50:43,002 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 04:50:43,002 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 04:50:43,006 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 04:50:43,007 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 04:50:41" (1/3) ... [2023-11-19 04:50:43,007 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c663e80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:50:43, skipping insertion in model container [2023-11-19 04:50:43,008 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:50:41" (2/3) ... [2023-11-19 04:50:43,008 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c663e80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:50:43, skipping insertion in model container [2023-11-19 04:50:43,008 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:50:42" (3/3) ... [2023-11-19 04:50:43,010 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-barrier.wvr.c [2023-11-19 04:50:43,018 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-19 04:50:43,029 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 04:50:43,029 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2023-11-19 04:50:43,029 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-19 04:50:43,226 INFO L144 ThreadInstanceAdder]: Constructed 18 joinOtherThreadTransitions. [2023-11-19 04:50:43,296 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-11-19 04:50:43,318 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 278 places, 267 transitions, 600 flow [2023-11-19 04:50:43,322 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 278 places, 267 transitions, 600 flow [2023-11-19 04:50:43,325 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 278 places, 267 transitions, 600 flow [2023-11-19 04:50:43,480 INFO L124 PetriNetUnfolderBase]: 8/239 cut-off events. [2023-11-19 04:50:43,481 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-19 04:50:43,494 INFO L83 FinitePrefix]: Finished finitePrefix Result has 268 conditions, 239 events. 8/239 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 342 event pairs, 0 based on Foata normal form. 0/215 useless extension candidates. Maximal degree in co-relation 202. Up to 3 conditions per place. [2023-11-19 04:50:43,506 INFO L119 LiptonReduction]: Number of co-enabled transitions 11336 [2023-11-19 04:50:52,920 INFO L134 LiptonReduction]: Checked pairs total: 63204 [2023-11-19 04:50:52,921 INFO L136 LiptonReduction]: Total number of compositions: 219 [2023-11-19 04:50:52,934 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 114 places, 101 transitions, 268 flow [2023-11-19 04:50:59,610 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 111682 states, 111054 states have (on average 4.83914131863778) internal successors, (537406), 111681 states have internal predecessors, (537406), 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 04:50:59,644 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 04:50:59,652 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;@4243a751, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-19 04:50:59,653 INFO L358 AbstractCegarLoop]: Starting to check reachability of 42 error locations. [2023-11-19 04:50:59,804 INFO L276 IsEmpty]: Start isEmpty. Operand has 111682 states, 111054 states have (on average 4.83914131863778) internal successors, (537406), 111681 states have internal predecessors, (537406), 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 04:50:59,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-19 04:50:59,810 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:50:59,811 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-19 04:50:59,812 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err7INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-11-19 04:50:59,818 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:50:59,818 INFO L85 PathProgramCache]: Analyzing trace with hash 981229620, now seen corresponding path program 1 times [2023-11-19 04:50:59,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:50:59,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703094900] [2023-11-19 04:50:59,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:50:59,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:51:00,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:51:00,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:51:00,550 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:51:00,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703094900] [2023-11-19 04:51:00,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [703094900] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:51:00,552 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:51:00,553 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 04:51:00,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539386230] [2023-11-19 04:51:00,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:51:00,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 04:51:00,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:51:00,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 04:51:00,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 04:51:00,889 INFO L87 Difference]: Start difference. First operand has 111682 states, 111054 states have (on average 4.83914131863778) internal successors, (537406), 111681 states have internal predecessors, (537406), 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, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:51:05,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:51:05,288 INFO L93 Difference]: Finished difference Result 111682 states and 536460 transitions. [2023-11-19 04:51:05,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 04:51:05,294 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2023-11-19 04:51:05,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:51:07,749 INFO L225 Difference]: With dead ends: 111682 [2023-11-19 04:51:07,749 INFO L226 Difference]: Without dead ends: 111178 [2023-11-19 04:51:07,751 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 04:51:07,759 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 04:51:07,761 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 16 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 04:51:08,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111178 states. [2023-11-19 04:51:14,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111178 to 111178. [2023-11-19 04:51:15,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111178 states, 110554 states have (on average 4.829847857155779) internal successors, (533959), 111177 states have internal predecessors, (533959), 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 04:51:17,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111178 states to 111178 states and 533959 transitions. [2023-11-19 04:51:17,916 INFO L78 Accepts]: Start accepts. Automaton has 111178 states and 533959 transitions. Word has length 5 [2023-11-19 04:51:17,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:51:17,917 INFO L495 AbstractCegarLoop]: Abstraction has 111178 states and 533959 transitions. [2023-11-19 04:51:17,918 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:51:17,918 INFO L276 IsEmpty]: Start isEmpty. Operand 111178 states and 533959 transitions. [2023-11-19 04:51:17,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-19 04:51:17,920 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:51:17,920 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:51:17,921 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 04:51:17,921 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err7INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-11-19 04:51:17,922 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:51:17,922 INFO L85 PathProgramCache]: Analyzing trace with hash -927668168, now seen corresponding path program 1 times [2023-11-19 04:51:17,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:51:17,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38139616] [2023-11-19 04:51:17,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:51:17,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:51:17,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:51:18,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:51:18,249 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:51:18,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38139616] [2023-11-19 04:51:18,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [38139616] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:51:18,252 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:51:18,252 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 04:51:18,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123658468] [2023-11-19 04:51:18,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:51:18,255 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 04:51:18,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:51:18,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 04:51:18,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:51:18,257 INFO L87 Difference]: Start difference. First operand 111178 states and 533959 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:51:20,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:51:20,460 INFO L93 Difference]: Finished difference Result 91744 states and 437000 transitions. [2023-11-19 04:51:20,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 04:51:20,461 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2023-11-19 04:51:20,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:51:21,335 INFO L225 Difference]: With dead ends: 91744 [2023-11-19 04:51:21,335 INFO L226 Difference]: Without dead ends: 91744 [2023-11-19 04:51:21,336 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 [2023-11-19 04:51:21,338 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 68 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 04:51:21,339 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 16 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]