./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-race-challenges/thread-local-value.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability 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_8c3c3fd8-8a90-41d6-9526-067e4cad0751/bin/utaipan-verify-NcY6lQBIFX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c3c3fd8-8a90-41d6-9526-067e4cad0751/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_8c3c3fd8-8a90-41d6-9526-067e4cad0751/bin/utaipan-verify-NcY6lQBIFX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c3c3fd8-8a90-41d6-9526-067e4cad0751/bin/utaipan-verify-NcY6lQBIFX/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-race-challenges/thread-local-value.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c3c3fd8-8a90-41d6-9526-067e4cad0751/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c3c3fd8-8a90-41d6-9526-067e4cad0751/bin/utaipan-verify-NcY6lQBIFX --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 9c0081ad3e087ae2c7251ec489b1315fb56a92011c66de3fb5b8233d6e4519ec --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 00:52:57,028 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 00:52:57,099 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c3c3fd8-8a90-41d6-9526-067e4cad0751/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-11-12 00:52:57,105 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 00:52:57,106 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 00:52:57,135 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 00:52:57,138 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 00:52:57,139 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 00:52:57,140 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 00:52:57,145 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 00:52:57,146 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-12 00:52:57,147 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-12 00:52:57,148 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-12 00:52:57,150 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-12 00:52:57,150 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-12 00:52:57,151 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-12 00:52:57,151 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-12 00:52:57,152 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-12 00:52:57,152 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-12 00:52:57,153 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-12 00:52:57,153 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-12 00:52:57,154 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-12 00:52:57,155 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 00:52:57,156 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 00:52:57,157 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 00:52:57,157 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 00:52:57,158 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 00:52:57,158 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 00:52:57,159 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 00:52:57,159 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 00:52:57,161 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 00:52:57,161 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 00:52:57,161 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 00:52:57,162 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 00:52:57,162 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 00:52:57,162 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 00:52:57,163 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:52:57,163 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 00:52:57,163 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 00:52:57,164 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 00:52:57,164 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-12 00:52:57,165 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 00:52:57,165 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 00:52:57,165 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-12 00:52:57,166 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 00:52:57,167 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_8c3c3fd8-8a90-41d6-9526-067e4cad0751/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c3c3fd8-8a90-41d6-9526-067e4cad0751/bin/utaipan-verify-NcY6lQBIFX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9c0081ad3e087ae2c7251ec489b1315fb56a92011c66de3fb5b8233d6e4519ec [2023-11-12 00:52:57,423 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 00:52:57,451 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 00:52:57,454 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 00:52:57,456 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 00:52:57,456 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 00:52:57,459 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c3c3fd8-8a90-41d6-9526-067e4cad0751/bin/utaipan-verify-NcY6lQBIFX/../../sv-benchmarks/c/pthread-race-challenges/thread-local-value.i [2023-11-12 00:53:00,616 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 00:53:00,988 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 00:53:00,989 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c3c3fd8-8a90-41d6-9526-067e4cad0751/sv-benchmarks/c/pthread-race-challenges/thread-local-value.i [2023-11-12 00:53:01,016 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c3c3fd8-8a90-41d6-9526-067e4cad0751/bin/utaipan-verify-NcY6lQBIFX/data/133f68921/55c7229b692c4055adfcac9a558e4999/FLAGe4ac138bd [2023-11-12 00:53:01,033 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c3c3fd8-8a90-41d6-9526-067e4cad0751/bin/utaipan-verify-NcY6lQBIFX/data/133f68921/55c7229b692c4055adfcac9a558e4999 [2023-11-12 00:53:01,040 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 00:53:01,043 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 00:53:01,048 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 00:53:01,048 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 00:53:01,054 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 00:53:01,057 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:53:01" (1/1) ... [2023-11-12 00:53:01,059 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1de35b18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:53:01, skipping insertion in model container [2023-11-12 00:53:01,059 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:53:01" (1/1) ... [2023-11-12 00:53:01,119 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 00:53:01,339 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-12 00:53:01,636 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_8c3c3fd8-8a90-41d6-9526-067e4cad0751/sv-benchmarks/c/pthread-race-challenges/thread-local-value.i[47990,48003] [2023-11-12 00:53:01,663 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:53:01,676 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 00:53:01,693 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-12 00:53:01,736 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_8c3c3fd8-8a90-41d6-9526-067e4cad0751/sv-benchmarks/c/pthread-race-challenges/thread-local-value.i[47990,48003] [2023-11-12 00:53:01,743 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:53:01,803 WARN L672 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:53:01,810 INFO L206 MainTranslator]: Completed translation [2023-11-12 00:53:01,810 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:53:01 WrapperNode [2023-11-12 00:53:01,810 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 00:53:01,811 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 00:53:01,811 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 00:53:01,812 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 00:53:01,820 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:53:01" (1/1) ... [2023-11-12 00:53:01,861 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:53:01" (1/1) ... [2023-11-12 00:53:01,902 INFO L138 Inliner]: procedures = 273, calls = 23, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 86 [2023-11-12 00:53:01,902 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 00:53:01,903 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 00:53:01,903 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 00:53:01,904 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 00:53:01,912 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:53:01" (1/1) ... [2023-11-12 00:53:01,912 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:53:01" (1/1) ... [2023-11-12 00:53:01,916 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:53:01" (1/1) ... [2023-11-12 00:53:01,930 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:53:01" (1/1) ... [2023-11-12 00:53:01,937 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:53:01" (1/1) ... [2023-11-12 00:53:01,940 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:53:01" (1/1) ... [2023-11-12 00:53:01,942 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:53:01" (1/1) ... [2023-11-12 00:53:01,944 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:53:01" (1/1) ... [2023-11-12 00:53:01,948 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 00:53:01,949 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 00:53:01,949 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 00:53:01,949 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 00:53:01,950 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:53:01" (1/1) ... [2023-11-12 00:53:01,957 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:53:01,971 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c3c3fd8-8a90-41d6-9526-067e4cad0751/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:53:01,995 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c3c3fd8-8a90-41d6-9526-067e4cad0751/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 00:53:02,009 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c3c3fd8-8a90-41d6-9526-067e4cad0751/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 00:53:02,034 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-12 00:53:02,035 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-12 00:53:02,035 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-12 00:53:02,035 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-12 00:53:02,035 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-12 00:53:02,036 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-12 00:53:02,036 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-12 00:53:02,036 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 00:53:02,036 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 00:53:02,036 INFO L130 BoogieDeclarations]: Found specification of procedure thread [2023-11-12 00:53:02,037 INFO L138 BoogieDeclarations]: Found implementation of procedure thread [2023-11-12 00:53:02,037 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 00:53:02,037 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 00:53:02,039 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 00:53:02,175 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 00:53:02,177 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 00:53:02,356 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 00:53:02,365 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 00:53:02,365 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-12 00:53:02,368 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:53:02 BoogieIcfgContainer [2023-11-12 00:53:02,368 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 00:53:02,371 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 00:53:02,372 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 00:53:02,376 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 00:53:02,376 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 12:53:01" (1/3) ... [2023-11-12 00:53:02,377 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a1e65f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:53:02, skipping insertion in model container [2023-11-12 00:53:02,381 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:53:01" (2/3) ... [2023-11-12 00:53:02,381 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a1e65f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:53:02, skipping insertion in model container [2023-11-12 00:53:02,381 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:53:02" (3/3) ... [2023-11-12 00:53:02,383 INFO L112 eAbstractionObserver]: Analyzing ICFG thread-local-value.i [2023-11-12 00:53:02,396 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-12 00:53:02,407 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 00:53:02,408 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2023-11-12 00:53:02,408 INFO L521 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-12 00:53:02,465 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-11-12 00:53:02,501 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-11-12 00:53:02,516 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 94 places, 98 transitions, 203 flow [2023-11-12 00:53:02,520 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 94 places, 98 transitions, 203 flow [2023-11-12 00:53:02,522 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 94 places, 98 transitions, 203 flow [2023-11-12 00:53:02,587 INFO L124 PetriNetUnfolderBase]: 9/122 cut-off events. [2023-11-12 00:53:02,588 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-12 00:53:02,594 INFO L83 FinitePrefix]: Finished finitePrefix Result has 127 conditions, 122 events. 9/122 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 201 event pairs, 0 based on Foata normal form. 0/107 useless extension candidates. Maximal degree in co-relation 64. Up to 4 conditions per place. [2023-11-12 00:53:02,598 INFO L119 LiptonReduction]: Number of co-enabled transitions 2108 [2023-11-12 00:53:05,889 INFO L134 LiptonReduction]: Checked pairs total: 1669 [2023-11-12 00:53:05,889 INFO L136 LiptonReduction]: Total number of compositions: 107 [2023-11-12 00:53:05,903 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 16 places, 14 transitions, 35 flow [2023-11-12 00:53:05,923 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 35 states, 25 states have (on average 2.2) internal successors, (55), 34 states have internal predecessors, (55), 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 00:53:05,953 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 00:53:05,961 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;@341e77ca, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-12 00:53:05,962 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2023-11-12 00:53:05,965 INFO L276 IsEmpty]: Start isEmpty. Operand has 35 states, 25 states have (on average 2.2) internal successors, (55), 34 states have internal predecessors, (55), 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 00:53:05,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-11-12 00:53:05,971 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:53:05,972 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-11-12 00:53:05,972 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting threadErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, threadErr0ASSERT_VIOLATIONERROR_FUNCTION, threadErr1ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-11-12 00:53:05,982 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:53:05,983 INFO L85 PathProgramCache]: Analyzing trace with hash 12437383, now seen corresponding path program 1 times [2023-11-12 00:53:05,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:53:05,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485315913] [2023-11-12 00:53:05,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:53:05,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:53:06,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:53:06,343 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 00:53:06,343 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:53:06,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1485315913] [2023-11-12 00:53:06,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1485315913] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:53:06,345 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:53:06,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-12 00:53:06,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508369183] [2023-11-12 00:53:06,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:53:06,352 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 00:53:06,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:53:06,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 00:53:06,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:53:06,376 INFO L87 Difference]: Start difference. First operand has 35 states, 25 states have (on average 2.2) internal successors, (55), 34 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:53:06,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:53:06,412 INFO L93 Difference]: Finished difference Result 14 states and 16 transitions. [2023-11-12 00:53:06,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 00:53:06,415 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2023-11-12 00:53:06,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:53:06,423 INFO L225 Difference]: With dead ends: 14 [2023-11-12 00:53:06,423 INFO L226 Difference]: Without dead ends: 11 [2023-11-12 00:53:06,424 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 [2023-11-12 00:53:06,428 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 5 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 00:53:06,429 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 2 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 00:53:06,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2023-11-12 00:53:06,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2023-11-12 00:53:06,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 1.3) internal successors, (13), 10 states have internal predecessors, (13), 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 00:53:06,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 13 transitions. [2023-11-12 00:53:06,461 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 13 transitions. Word has length 4 [2023-11-12 00:53:06,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:53:06,461 INFO L495 AbstractCegarLoop]: Abstraction has 11 states and 13 transitions. [2023-11-12 00:53:06,462 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:53:06,462 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 13 transitions. [2023-11-12 00:53:06,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-12 00:53:06,463 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:53:06,463 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2023-11-12 00:53:06,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-12 00:53:06,464 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, threadErr0ASSERT_VIOLATIONERROR_FUNCTION, threadErr1ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-11-12 00:53:06,464 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:53:06,464 INFO L85 PathProgramCache]: Analyzing trace with hash -932577330, now seen corresponding path program 1 times [2023-11-12 00:53:06,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:53:06,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [124464370] [2023-11-12 00:53:06,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:53:06,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:53:06,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 00:53:06,509 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-12 00:53:06,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 00:53:06,551 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-11-12 00:53:06,551 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-12 00:53:06,553 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 7 remaining) [2023-11-12 00:53:06,556 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONERROR_FUNCTION (5 of 7 remaining) [2023-11-12 00:53:06,556 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr1ASSERT_VIOLATIONERROR_FUNCTION (4 of 7 remaining) [2023-11-12 00:53:06,557 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr2ASSERT_VIOLATIONERROR_FUNCTION (3 of 7 remaining) [2023-11-12 00:53:06,557 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 7 remaining) [2023-11-12 00:53:06,557 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr1ASSERT_VIOLATIONERROR_FUNCTION (1 of 7 remaining) [2023-11-12 00:53:06,558 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr2ASSERT_VIOLATIONERROR_FUNCTION (0 of 7 remaining) [2023-11-12 00:53:06,558 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-12 00:53:06,560 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-11-12 00:53:06,563 WARN L234 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-12 00:53:06,563 INFO L521 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-11-12 00:53:06,585 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-12 00:53:06,589 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-11-12 00:53:06,590 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 128 places, 134 transitions, 284 flow [2023-11-12 00:53:06,590 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 128 places, 134 transitions, 284 flow [2023-11-12 00:53:06,591 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 128 places, 134 transitions, 284 flow [2023-11-12 00:53:06,674 INFO L124 PetriNetUnfolderBase]: 17/215 cut-off events. [2023-11-12 00:53:06,675 INFO L125 PetriNetUnfolderBase]: For 6/7 co-relation queries the response was YES. [2023-11-12 00:53:06,678 INFO L83 FinitePrefix]: Finished finitePrefix Result has 227 conditions, 215 events. 17/215 cut-off events. For 6/7 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 532 event pairs, 0 based on Foata normal form. 0/188 useless extension candidates. Maximal degree in co-relation 124. Up to 8 conditions per place. [2023-11-12 00:53:06,689 INFO L119 LiptonReduction]: Number of co-enabled transitions 7412 [2023-11-12 00:53:09,814 INFO L134 LiptonReduction]: Checked pairs total: 9079 [2023-11-12 00:53:09,814 INFO L136 LiptonReduction]: Total number of compositions: 153 [2023-11-12 00:53:09,815 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 28 transitions, 72 flow [2023-11-12 00:53:09,868 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 614 states, 556 states have (on average 2.7607913669064748) internal successors, (1535), 613 states have internal predecessors, (1535), 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 00:53:09,870 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 00:53:09,871 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;@341e77ca, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-12 00:53:09,871 INFO L358 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2023-11-12 00:53:09,874 INFO L276 IsEmpty]: Start isEmpty. Operand has 614 states, 556 states have (on average 2.7607913669064748) internal successors, (1535), 613 states have internal predecessors, (1535), 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 00:53:09,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-11-12 00:53:09,874 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:53:09,875 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-11-12 00:53:09,875 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting threadErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, threadErr0ASSERT_VIOLATIONERROR_FUNCTION, threadErr1ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2023-11-12 00:53:09,876 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:53:09,876 INFO L85 PathProgramCache]: Analyzing trace with hash 22422344, now seen corresponding path program 1 times [2023-11-12 00:53:09,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:53:09,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923529928] [2023-11-12 00:53:09,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:53:09,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:53:09,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:53:09,995 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 00:53:09,996 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:53:09,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923529928] [2023-11-12 00:53:09,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [923529928] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:53:09,996 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:53:09,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-12 00:53:09,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884954345] [2023-11-12 00:53:09,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:53:09,998 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 00:53:09,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:53:09,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 00:53:09,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:53:10,001 INFO L87 Difference]: Start difference. First operand has 614 states, 556 states have (on average 2.7607913669064748) internal successors, (1535), 613 states have internal predecessors, (1535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:53:10,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:53:10,065 INFO L93 Difference]: Finished difference Result 324 states and 751 transitions. [2023-11-12 00:53:10,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 00:53:10,073 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2023-11-12 00:53:10,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:53:10,079 INFO L225 Difference]: With dead ends: 324 [2023-11-12 00:53:10,081 INFO L226 Difference]: Without dead ends: 243 [2023-11-12 00:53:10,081 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 [2023-11-12 00:53:10,083 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 9 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 00:53:10,084 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 6 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 00:53:10,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2023-11-12 00:53:10,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 243. [2023-11-12 00:53:10,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243 states, 234 states have (on average 2.3162393162393164) internal successors, (542), 242 states have internal predecessors, (542), 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 00:53:10,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 542 transitions. [2023-11-12 00:53:10,115 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 542 transitions. Word has length 4 [2023-11-12 00:53:10,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:53:10,116 INFO L495 AbstractCegarLoop]: Abstraction has 243 states and 542 transitions. [2023-11-12 00:53:10,116 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:53:10,116 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 542 transitions. [2023-11-12 00:53:10,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-12 00:53:10,117 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:53:10,117 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:53:10,118 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-12 00:53:10,118 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting threadErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, threadErr0ASSERT_VIOLATIONERROR_FUNCTION, threadErr1ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2023-11-12 00:53:10,119 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:53:10,119 INFO L85 PathProgramCache]: Analyzing trace with hash 1699880015, now seen corresponding path program 1 times [2023-11-12 00:53:10,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:53:10,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481665263] [2023-11-12 00:53:10,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:53:10,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:53:10,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 00:53:10,148 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-12 00:53:10,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 00:53:10,172 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-11-12 00:53:10,172 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-12 00:53:10,172 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location threadErr0ASSERT_VIOLATIONERROR_FUNCTION (9 of 10 remaining) [2023-11-12 00:53:10,173 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 10 remaining) [2023-11-12 00:53:10,173 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONERROR_FUNCTION (7 of 10 remaining) [2023-11-12 00:53:10,173 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr1ASSERT_VIOLATIONERROR_FUNCTION (6 of 10 remaining) [2023-11-12 00:53:10,174 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr2ASSERT_VIOLATIONERROR_FUNCTION (5 of 10 remaining) [2023-11-12 00:53:10,174 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 10 remaining) [2023-11-12 00:53:10,174 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr1ASSERT_VIOLATIONERROR_FUNCTION (3 of 10 remaining) [2023-11-12 00:53:10,174 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr2ASSERT_VIOLATIONERROR_FUNCTION (2 of 10 remaining) [2023-11-12 00:53:10,175 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr1ASSERT_VIOLATIONERROR_FUNCTION (1 of 10 remaining) [2023-11-12 00:53:10,175 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr2ASSERT_VIOLATIONERROR_FUNCTION (0 of 10 remaining) [2023-11-12 00:53:10,175 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-12 00:53:10,176 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-11-12 00:53:10,182 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 2 thread instances [2023-11-12 00:53:10,182 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-11-12 00:53:10,201 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~pre7 could not be translated [2023-11-12 00:53:10,202 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~mem8 [2023-11-12 00:53:10,202 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~mem8 [2023-11-12 00:53:10,203 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~pre7 could not be translated [2023-11-12 00:53:10,211 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 12:53:10 BasicIcfg [2023-11-12 00:53:10,211 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-12 00:53:10,212 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-12 00:53:10,212 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-12 00:53:10,212 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-12 00:53:10,213 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:53:02" (3/4) ... [2023-11-12 00:53:10,213 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2023-11-12 00:53:10,224 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~pre7 could not be translated [2023-11-12 00:53:10,225 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~mem8 [2023-11-12 00:53:10,225 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~pre7 could not be translated [2023-11-12 00:53:10,225 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~mem8 [2023-11-12 00:53:10,261 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c3c3fd8-8a90-41d6-9526-067e4cad0751/bin/utaipan-verify-NcY6lQBIFX/witness.graphml [2023-11-12 00:53:10,261 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-12 00:53:10,262 INFO L158 Benchmark]: Toolchain (without parser) took 9218.96ms. Allocated memory was 138.4MB in the beginning and 209.7MB in the end (delta: 71.3MB). Free memory was 90.5MB in the beginning and 69.3MB in the end (delta: 21.2MB). Peak memory consumption was 94.3MB. Max. memory is 16.1GB. [2023-11-12 00:53:10,262 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 138.4MB. Free memory is still 85.2MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-12 00:53:10,263 INFO L158 Benchmark]: CACSL2BoogieTranslator took 762.42ms. Allocated memory is still 138.4MB. Free memory was 90.2MB in the beginning and 61.6MB in the end (delta: 28.6MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. [2023-11-12 00:53:10,263 INFO L158 Benchmark]: Boogie Procedure Inliner took 91.55ms. Allocated memory was 138.4MB in the beginning and 174.1MB in the end (delta: 35.7MB). Free memory was 61.6MB in the beginning and 142.1MB in the end (delta: -80.5MB). Peak memory consumption was 7.5MB. Max. memory is 16.1GB. [2023-11-12 00:53:10,264 INFO L158 Benchmark]: Boogie Preprocessor took 44.95ms. Allocated memory is still 174.1MB. Free memory was 142.1MB in the beginning and 144.5MB in the end (delta: -2.4MB). Peak memory consumption was 4.4MB. Max. memory is 16.1GB. [2023-11-12 00:53:10,264 INFO L158 Benchmark]: RCFGBuilder took 419.29ms. Allocated memory is still 174.1MB. Free memory was 143.6MB in the beginning and 129.8MB in the end (delta: 13.8MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-11-12 00:53:10,265 INFO L158 Benchmark]: TraceAbstraction took 7840.40ms. Allocated memory was 174.1MB in the beginning and 209.7MB in the end (delta: 35.7MB). Free memory was 128.9MB in the beginning and 72.4MB in the end (delta: 56.5MB). Peak memory consumption was 92.9MB. Max. memory is 16.1GB. [2023-11-12 00:53:10,265 INFO L158 Benchmark]: Witness Printer took 49.56ms. Allocated memory is still 209.7MB. Free memory was 72.4MB in the beginning and 69.3MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-12 00:53:10,268 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 138.4MB. Free memory is still 85.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 762.42ms. Allocated memory is still 138.4MB. Free memory was 90.2MB in the beginning and 61.6MB in the end (delta: 28.6MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 91.55ms. Allocated memory was 138.4MB in the beginning and 174.1MB in the end (delta: 35.7MB). Free memory was 61.6MB in the beginning and 142.1MB in the end (delta: -80.5MB). Peak memory consumption was 7.5MB. Max. memory is 16.1GB. * Boogie Preprocessor took 44.95ms. Allocated memory is still 174.1MB. Free memory was 142.1MB in the beginning and 144.5MB in the end (delta: -2.4MB). Peak memory consumption was 4.4MB. Max. memory is 16.1GB. * RCFGBuilder took 419.29ms. Allocated memory is still 174.1MB. Free memory was 143.6MB in the beginning and 129.8MB in the end (delta: 13.8MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 7840.40ms. Allocated memory was 174.1MB in the beginning and 209.7MB in the end (delta: 35.7MB). Free memory was 128.9MB in the beginning and 72.4MB in the end (delta: 56.5MB). Peak memory consumption was 92.9MB. Max. memory is 16.1GB. * Witness Printer took 49.56ms. Allocated memory is still 209.7MB. Free memory was 72.4MB in the beginning and 69.3MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~pre7 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~mem8 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~mem8 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~pre7 could not be translated - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~pre7 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~mem8 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~pre7 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~mem8 - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.4s, 94 PlacesBefore, 16 PlacesAfterwards, 98 TransitionsBefore, 14 TransitionsAfterwards, 2108 CoEnabledTransitionPairs, 6 FixpointIterations, 29 TrivialSequentialCompositions, 53 ConcurrentSequentialCompositions, 4 TrivialYvCompositions, 15 ConcurrentYvCompositions, 6 ChoiceCompositions, 107 TotalNumberOfCompositions, 1669 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1669, independent: 1669, independent conditional: 0, independent unconditional: 1669, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1414, independent: 1414, independent conditional: 0, independent unconditional: 1414, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1414, independent: 1414, independent conditional: 0, independent unconditional: 1414, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1669, independent: 255, independent conditional: 0, independent unconditional: 255, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 1414, unknown conditional: 0, unknown unconditional: 1414] , Statistics on independence cache: Total cache size (in pairs): 14, Positive cache size: 14, Positive conditional cache size: 0, Positive unconditional cache size: 14, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.2s, 128 PlacesBefore, 31 PlacesAfterwards, 134 TransitionsBefore, 28 TransitionsAfterwards, 7412 CoEnabledTransitionPairs, 7 FixpointIterations, 24 TrivialSequentialCompositions, 90 ConcurrentSequentialCompositions, 3 TrivialYvCompositions, 27 ConcurrentYvCompositions, 9 ChoiceCompositions, 153 TotalNumberOfCompositions, 9079 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 8008, independent: 7924, independent conditional: 0, independent unconditional: 7924, dependent: 84, dependent conditional: 0, dependent unconditional: 84, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 5606, independent: 5580, independent conditional: 0, independent unconditional: 5580, dependent: 26, dependent conditional: 0, dependent unconditional: 26, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 5606, independent: 5553, independent conditional: 0, independent unconditional: 5553, dependent: 53, dependent conditional: 0, dependent unconditional: 53, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 53, independent: 27, independent conditional: 0, independent unconditional: 27, dependent: 26, dependent conditional: 0, dependent unconditional: 26, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 86, independent: 33, independent conditional: 0, independent unconditional: 33, dependent: 53, dependent conditional: 0, dependent unconditional: 53, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 8008, independent: 2344, independent conditional: 0, independent unconditional: 2344, dependent: 58, dependent conditional: 0, dependent unconditional: 58, unknown: 5606, unknown conditional: 0, unknown unconditional: 5606] , Statistics on independence cache: Total cache size (in pairs): 181, Positive cache size: 171, Positive conditional cache size: 0, Positive unconditional cache size: 171, Negative cache size: 10, Negative conditional cache size: 0, Negative unconditional cache size: 10, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 1031]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L1036] 0 int data = 0; [L1045] 0 int threads_total = __VERIFIER_nondet_int(); [L1046] CALL 0 assume_abort_if_not(threads_total >= 0) [L1016] COND FALSE 0 !(!cond) [L1046] RET 0 assume_abort_if_not(threads_total >= 0) [L1047] 0 pthread_t *tids = malloc(threads_total * sizeof(pthread_t)); [L1047] 0 pthread_t *tids = malloc(threads_total * sizeof(pthread_t)); [L1048] 0 int i = 0; VAL [data=0, i=0, threads_total=2, tids={3:0}] [L1048] COND TRUE 0 i < threads_total [L1049] EXPR 0 \read(*tids) [L1049] FCALL, FORK 0 pthread_create(&tids[i], ((void *)0), &thread, ((void *)0)) VAL [data=0, i=0, threads_total=2, tids={3:0}] [L1038] CALL 1 __VERIFIER_assert(data == 0) [L1048] 0 i++ VAL [data=0, i=1, threads_total=2, tids={3:0}] [L1048] COND TRUE 0 i < threads_total [L1049] EXPR 0 \read(*tids) [L1049] FCALL, FORK 0 pthread_create(&tids[i], ((void *)0), &thread, ((void *)0)) VAL [data=0, i=1, threads_total=2, tids={3:0}] [L1030] COND FALSE 1 !(!(cond)) [L1038] RET 1 __VERIFIER_assert(data == 0) [L1039] 1 data = 1 [L1040] CALL 1 __VERIFIER_assert(data == 1) [L1038] CALL 2 __VERIFIER_assert(data == 0) [L1030] COND TRUE 2 !(cond) [L1031] 2 reach_error() VAL [\old(cond)=0, cond=0, data=1] - UnprovableResult [Line: 1049]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: 1031]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 1031]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 124 locations, 7 error locations. Started 1 CEGAR loops. OverallTime: 4.1s, OverallIterations: 2, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.4s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 5 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 5 mSDsluCounter, 2 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 11 IncrementalHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 1 mSDtfsCounter, 11 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=35occurred in iteration=0, InterpolantAutomatonStates: 3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 10 NumberOfCodeBlocks, 10 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 3 ConstructedInterpolants, 0 QuantifiedInterpolants, 9 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data with 2 thread instances CFG has 4 procedures, 156 locations, 10 error locations. Started 1 CEGAR loops. OverallTime: 3.6s, OverallIterations: 2, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.3s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 9 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 9 mSDsluCounter, 6 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 3 mSDsCounter, 1 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 40 IncrementalHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1 mSolverCounterUnsat, 3 mSDtfsCounter, 40 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=614occurred in iteration=0, InterpolantAutomatonStates: 3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 14 NumberOfCodeBlocks, 14 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 3 ConstructedInterpolants, 0 QuantifiedInterpolants, 9 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2023-11-12 00:53:10,299 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c3c3fd8-8a90-41d6-9526-067e4cad0751/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE