./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/pthread-ext/36_stack_cas_p0_vs_concur-race.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 30e01a73 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_36d54e99-e769-498f-a04e-07a0aafd4932/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d54e99-e769-498f-a04e-07a0aafd4932/bin/utaipan-verify-mE87zJ7Ire/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d54e99-e769-498f-a04e-07a0aafd4932/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d54e99-e769-498f-a04e-07a0aafd4932/bin/utaipan-verify-mE87zJ7Ire/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-ext/36_stack_cas_p0_vs_concur-race.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d54e99-e769-498f-a04e-07a0aafd4932/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-DataRace-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d54e99-e769-498f-a04e-07a0aafd4932/bin/utaipan-verify-mE87zJ7Ire --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! data-race) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash e7fe0631e7f950e2868c8cb954edca4f6de3fdffbf6debba58771511fbac2e8b --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 21:17:17,086 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 21:17:17,163 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d54e99-e769-498f-a04e-07a0aafd4932/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-DataRace-32bit-Taipan_Default.epf [2023-11-23 21:17:17,170 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 21:17:17,170 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 21:17:17,199 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 21:17:17,199 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 21:17:17,200 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 21:17:17,201 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 21:17:17,202 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 21:17:17,202 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-23 21:17:17,203 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-23 21:17:17,203 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-23 21:17:17,204 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-23 21:17:17,204 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-23 21:17:17,205 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-23 21:17:17,205 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-23 21:17:17,206 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-23 21:17:17,206 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-23 21:17:17,207 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-23 21:17:17,207 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-23 21:17:17,208 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-23 21:17:17,209 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 21:17:17,209 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 21:17:17,210 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-23 21:17:17,210 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 21:17:17,211 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-23 21:17:17,211 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 21:17:17,211 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 21:17:17,212 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 21:17:17,212 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 21:17:17,213 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-11-23 21:17:17,213 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-23 21:17:17,213 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-23 21:17:17,214 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 21:17:17,214 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 21:17:17,214 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 21:17:17,214 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 21:17:17,215 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:17:17,215 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 21:17:17,215 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 21:17:17,216 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 21:17:17,216 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-23 21:17:17,216 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 21:17:17,216 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 21:17:17,217 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 21:17:17,217 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-23 21:17:17,217 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 21:17:17,217 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_36d54e99-e769-498f-a04e-07a0aafd4932/bin/utaipan-verify-mE87zJ7Ire/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d54e99-e769-498f-a04e-07a0aafd4932/bin/utaipan-verify-mE87zJ7Ire Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e7fe0631e7f950e2868c8cb954edca4f6de3fdffbf6debba58771511fbac2e8b [2023-11-23 21:17:17,493 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 21:17:17,514 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 21:17:17,517 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 21:17:17,519 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 21:17:17,519 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 21:17:17,521 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d54e99-e769-498f-a04e-07a0aafd4932/bin/utaipan-verify-mE87zJ7Ire/../../sv-benchmarks/c/pthread-ext/36_stack_cas_p0_vs_concur-race.i [2023-11-23 21:17:20,654 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 21:17:20,950 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 21:17:20,951 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d54e99-e769-498f-a04e-07a0aafd4932/sv-benchmarks/c/pthread-ext/36_stack_cas_p0_vs_concur-race.i [2023-11-23 21:17:20,970 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d54e99-e769-498f-a04e-07a0aafd4932/bin/utaipan-verify-mE87zJ7Ire/data/a7c9e2fe7/acd5bc0802284b88b1b00e223ce3bce0/FLAGf5b49f850 [2023-11-23 21:17:20,986 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d54e99-e769-498f-a04e-07a0aafd4932/bin/utaipan-verify-mE87zJ7Ire/data/a7c9e2fe7/acd5bc0802284b88b1b00e223ce3bce0 [2023-11-23 21:17:20,989 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 21:17:20,991 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 21:17:20,992 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 21:17:20,992 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 21:17:20,998 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 21:17:20,999 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:17:20" (1/1) ... [2023-11-23 21:17:21,000 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@742d549b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:17:20, skipping insertion in model container [2023-11-23 21:17:21,000 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:17:20" (1/1) ... [2023-11-23 21:17:21,045 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 21:17:21,450 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:17:21,466 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 21:17:21,563 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:17:21,626 INFO L206 MainTranslator]: Completed translation [2023-11-23 21:17:21,626 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:17:21 WrapperNode [2023-11-23 21:17:21,627 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 21:17:21,628 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 21:17:21,628 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 21:17:21,628 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 21:17:21,636 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:17:21" (1/1) ... [2023-11-23 21:17:21,669 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:17:21" (1/1) ... [2023-11-23 21:17:21,727 INFO L138 Inliner]: procedures = 170, calls = 36, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 197 [2023-11-23 21:17:21,728 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 21:17:21,730 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 21:17:21,731 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 21:17:21,731 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 21:17:21,742 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:17:21" (1/1) ... [2023-11-23 21:17:21,742 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:17:21" (1/1) ... [2023-11-23 21:17:21,763 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:17:21" (1/1) ... [2023-11-23 21:17:21,767 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:17:21" (1/1) ... [2023-11-23 21:17:21,788 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:17:21" (1/1) ... [2023-11-23 21:17:21,793 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:17:21" (1/1) ... [2023-11-23 21:17:21,795 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:17:21" (1/1) ... [2023-11-23 21:17:21,798 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:17:21" (1/1) ... [2023-11-23 21:17:21,802 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 21:17:21,803 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 21:17:21,809 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 21:17:21,809 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 21:17:21,810 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:17:21" (1/1) ... [2023-11-23 21:17:21,835 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:17:21,849 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d54e99-e769-498f-a04e-07a0aafd4932/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:17:21,862 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d54e99-e769-498f-a04e-07a0aafd4932/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 21:17:21,876 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d54e99-e769-498f-a04e-07a0aafd4932/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 21:17:21,900 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-23 21:17:21,900 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2023-11-23 21:17:21,901 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2023-11-23 21:17:21,901 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-23 21:17:21,901 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 21:17:21,901 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 21:17:21,903 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 21:17:21,903 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 21:17:21,904 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 21:17:21,904 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 21:17:21,906 WARN L213 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-23 21:17:22,123 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 21:17:22,127 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 21:17:22,622 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 21:17:22,908 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 21:17:22,908 INFO L309 CfgBuilder]: Removed 3 assume(true) statements. [2023-11-23 21:17:22,910 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:17:22 BoogieIcfgContainer [2023-11-23 21:17:22,910 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 21:17:22,913 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 21:17:22,913 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 21:17:22,916 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 21:17:22,917 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 09:17:20" (1/3) ... [2023-11-23 21:17:22,917 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@386f7eba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:17:22, skipping insertion in model container [2023-11-23 21:17:22,918 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:17:21" (2/3) ... [2023-11-23 21:17:22,918 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@386f7eba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:17:22, skipping insertion in model container [2023-11-23 21:17:22,918 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:17:22" (3/3) ... [2023-11-23 21:17:22,920 INFO L112 eAbstractionObserver]: Analyzing ICFG 36_stack_cas_p0_vs_concur-race.i [2023-11-23 21:17:22,929 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-23 21:17:22,940 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 21:17:22,940 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 19 error locations. [2023-11-23 21:17:22,941 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-23 21:17:23,036 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-23 21:17:23,069 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 152 places, 159 transitions, 322 flow [2023-11-23 21:17:23,180 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 1709 states, 1670 states have (on average 2.097005988023952) internal successors, (3502), 1708 states have internal predecessors, (3502), 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) [2023-11-23 21:17:23,200 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 21:17:23,207 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;@74ddf135, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 21:17:23,207 INFO L358 AbstractCegarLoop]: Starting to check reachability of 39 error locations. [2023-11-23 21:17:23,214 INFO L276 IsEmpty]: Start isEmpty. Operand has 1709 states, 1670 states have (on average 2.097005988023952) internal successors, (3502), 1708 states have internal predecessors, (3502), 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) [2023-11-23 21:17:23,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-11-23 21:17:23,224 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:17:23,224 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:17:23,225 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err4ASSERT_VIOLATIONDATA_RACE (and 35 more)] === [2023-11-23 21:17:23,230 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:17:23,231 INFO L85 PathProgramCache]: Analyzing trace with hash 1472771739, now seen corresponding path program 1 times [2023-11-23 21:17:23,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:17:23,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716382738] [2023-11-23 21:17:23,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:17:23,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:17:23,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 21:17:23,415 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-23 21:17:23,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 21:17:23,505 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-11-23 21:17:23,507 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-23 21:17:23,508 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (38 of 39 remaining) [2023-11-23 21:17:23,510 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (37 of 39 remaining) [2023-11-23 21:17:23,511 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (36 of 39 remaining) [2023-11-23 21:17:23,511 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (35 of 39 remaining) [2023-11-23 21:17:23,512 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (34 of 39 remaining) [2023-11-23 21:17:23,513 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (33 of 39 remaining) [2023-11-23 21:17:23,513 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (32 of 39 remaining) [2023-11-23 21:17:23,514 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (31 of 39 remaining) [2023-11-23 21:17:23,514 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (30 of 39 remaining) [2023-11-23 21:17:23,514 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (29 of 39 remaining) [2023-11-23 21:17:23,515 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (28 of 39 remaining) [2023-11-23 21:17:23,515 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err18ASSERT_VIOLATIONDATA_RACE (27 of 39 remaining) [2023-11-23 21:17:23,515 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (26 of 39 remaining) [2023-11-23 21:17:23,517 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (25 of 39 remaining) [2023-11-23 21:17:23,517 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONDATA_RACE (24 of 39 remaining) [2023-11-23 21:17:23,517 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONDATA_RACE (23 of 39 remaining) [2023-11-23 21:17:23,518 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err16ASSERT_VIOLATIONDATA_RACE (22 of 39 remaining) [2023-11-23 21:17:23,519 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONDATA_RACE (21 of 39 remaining) [2023-11-23 21:17:23,519 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15ASSERT_VIOLATIONDATA_RACE (20 of 39 remaining) [2023-11-23 21:17:23,519 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err17ASSERT_VIOLATIONDATA_RACE (19 of 39 remaining) [2023-11-23 21:17:23,520 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (18 of 39 remaining) [2023-11-23 21:17:23,520 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (17 of 39 remaining) [2023-11-23 21:17:23,520 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (16 of 39 remaining) [2023-11-23 21:17:23,522 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (15 of 39 remaining) [2023-11-23 21:17:23,523 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (14 of 39 remaining) [2023-11-23 21:17:23,523 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (13 of 39 remaining) [2023-11-23 21:17:23,524 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (12 of 39 remaining) [2023-11-23 21:17:23,524 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (11 of 39 remaining) [2023-11-23 21:17:23,525 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (10 of 39 remaining) [2023-11-23 21:17:23,525 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (9 of 39 remaining) [2023-11-23 21:17:23,525 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err18ASSERT_VIOLATIONDATA_RACE (8 of 39 remaining) [2023-11-23 21:17:23,530 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (7 of 39 remaining) [2023-11-23 21:17:23,531 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (6 of 39 remaining) [2023-11-23 21:17:23,531 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONDATA_RACE (5 of 39 remaining) [2023-11-23 21:17:23,532 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONDATA_RACE (4 of 39 remaining) [2023-11-23 21:17:23,532 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err16ASSERT_VIOLATIONDATA_RACE (3 of 39 remaining) [2023-11-23 21:17:23,537 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONDATA_RACE (2 of 39 remaining) [2023-11-23 21:17:23,537 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15ASSERT_VIOLATIONDATA_RACE (1 of 39 remaining) [2023-11-23 21:17:23,538 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err17ASSERT_VIOLATIONDATA_RACE (0 of 39 remaining) [2023-11-23 21:17:23,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 21:17:23,547 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-11-23 21:17:23,550 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-23 21:17:23,550 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-11-23 21:17:23,750 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-23 21:17:23,758 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 276 places, 290 transitions, 590 flow [2023-11-23 21:17:30,380 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 209909 states, 209091 states have (on average 3.1355773323576814) internal successors, (655621), 209908 states have internal predecessors, (655621), 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) [2023-11-23 21:17:30,382 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 21:17:30,387 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;@74ddf135, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 21:17:30,387 INFO L358 AbstractCegarLoop]: Starting to check reachability of 58 error locations. [2023-11-23 21:17:30,698 INFO L276 IsEmpty]: Start isEmpty. Operand has 209909 states, 209091 states have (on average 3.1355773323576814) internal successors, (655621), 209908 states have internal predecessors, (655621), 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) [2023-11-23 21:17:30,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-11-23 21:17:30,703 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:17:30,703 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:17:30,704 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err4ASSERT_VIOLATIONDATA_RACE (and 54 more)] === [2023-11-23 21:17:30,704 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:17:30,704 INFO L85 PathProgramCache]: Analyzing trace with hash -1830882810, now seen corresponding path program 1 times [2023-11-23 21:17:30,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:17:30,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934234591] [2023-11-23 21:17:30,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:17:30,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:17:30,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:17:30,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:17:30,876 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:17:30,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934234591] [2023-11-23 21:17:30,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1934234591] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:17:30,877 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:17:30,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-23 21:17:30,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042432921] [2023-11-23 21:17:30,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:17:30,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-23 21:17:30,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:17:30,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-23 21:17:30,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-23 21:17:31,237 INFO L87 Difference]: Start difference. First operand has 209909 states, 209091 states have (on average 3.1355773323576814) internal successors, (655621), 209908 states have internal predecessors, (655621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 1 states have (on average 28.0) internal successors, (28), 2 states have internal predecessors, (28), 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) [2023-11-23 21:17:33,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:17:33,151 INFO L93 Difference]: Finished difference Result 83965 states and 244017 transitions. [2023-11-23 21:17:33,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-23 21:17:33,155 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 28.0) internal successors, (28), 2 states have internal predecessors, (28), 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 28 [2023-11-23 21:17:33,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:17:33,735 INFO L225 Difference]: With dead ends: 83965 [2023-11-23 21:17:33,735 INFO L226 Difference]: Without dead ends: 83965 [2023-11-23 21:17:33,739 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-23 21:17:33,743 INFO L413 NwaCegarLoop]: 225 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 225 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 21:17:33,745 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 225 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 21:17:34,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83965 states. [2023-11-23 21:17:37,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83965 to 83965. [2023-11-23 21:17:37,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83965 states, 83844 states have (on average 2.910369257191928) internal successors, (244017), 83964 states have internal predecessors, (244017), 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) [2023-11-23 21:17:37,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83965 states to 83965 states and 244017 transitions. [2023-11-23 21:17:37,847 INFO L78 Accepts]: Start accepts. Automaton has 83965 states and 244017 transitions. Word has length 28 [2023-11-23 21:17:37,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:17:37,848 INFO L495 AbstractCegarLoop]: Abstraction has 83965 states and 244017 transitions. [2023-11-23 21:17:37,848 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 28.0) internal successors, (28), 2 states have internal predecessors, (28), 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) [2023-11-23 21:17:37,849 INFO L276 IsEmpty]: Start isEmpty. Operand 83965 states and 244017 transitions. [2023-11-23 21:17:37,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-11-23 21:17:37,853 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:17:37,854 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:17:37,854 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-23 21:17:37,854 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err4ASSERT_VIOLATIONDATA_RACE (and 54 more)] === [2023-11-23 21:17:37,855 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:17:37,856 INFO L85 PathProgramCache]: Analyzing trace with hash 777125963, now seen corresponding path program 1 times [2023-11-23 21:17:37,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:17:37,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880000036] [2023-11-23 21:17:37,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:17:37,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:17:37,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 21:17:37,900 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-23 21:17:37,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 21:17:37,939 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-11-23 21:17:37,939 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-23 21:17:37,940 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (57 of 58 remaining) [2023-11-23 21:17:37,940 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (56 of 58 remaining) [2023-11-23 21:17:37,940 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (55 of 58 remaining) [2023-11-23 21:17:37,941 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (54 of 58 remaining) [2023-11-23 21:17:37,941 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (53 of 58 remaining) [2023-11-23 21:17:37,941 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (52 of 58 remaining) [2023-11-23 21:17:37,942 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (51 of 58 remaining) [2023-11-23 21:17:37,942 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (50 of 58 remaining) [2023-11-23 21:17:37,942 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (49 of 58 remaining) [2023-11-23 21:17:37,942 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (48 of 58 remaining) [2023-11-23 21:17:37,943 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (47 of 58 remaining) [2023-11-23 21:17:37,943 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err18ASSERT_VIOLATIONDATA_RACE (46 of 58 remaining) [2023-11-23 21:17:37,943 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (45 of 58 remaining) [2023-11-23 21:17:37,944 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (44 of 58 remaining) [2023-11-23 21:17:37,944 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONDATA_RACE (43 of 58 remaining) [2023-11-23 21:17:37,944 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONDATA_RACE (42 of 58 remaining) [2023-11-23 21:17:37,945 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err16ASSERT_VIOLATIONDATA_RACE (41 of 58 remaining) [2023-11-23 21:17:37,945 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONDATA_RACE (40 of 58 remaining) [2023-11-23 21:17:37,945 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15ASSERT_VIOLATIONDATA_RACE (39 of 58 remaining) [2023-11-23 21:17:37,945 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err17ASSERT_VIOLATIONDATA_RACE (38 of 58 remaining) [2023-11-23 21:17:37,946 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (37 of 58 remaining) [2023-11-23 21:17:37,946 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (36 of 58 remaining) [2023-11-23 21:17:37,946 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (35 of 58 remaining) [2023-11-23 21:17:37,956 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (34 of 58 remaining) [2023-11-23 21:17:37,957 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (33 of 58 remaining) [2023-11-23 21:17:37,957 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (32 of 58 remaining) [2023-11-23 21:17:37,957 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (31 of 58 remaining) [2023-11-23 21:17:37,958 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (30 of 58 remaining) [2023-11-23 21:17:37,958 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (29 of 58 remaining) [2023-11-23 21:17:37,958 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (28 of 58 remaining) [2023-11-23 21:17:37,959 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err18ASSERT_VIOLATIONDATA_RACE (27 of 58 remaining) [2023-11-23 21:17:37,959 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (26 of 58 remaining) [2023-11-23 21:17:37,959 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (25 of 58 remaining) [2023-11-23 21:17:37,960 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONDATA_RACE (24 of 58 remaining) [2023-11-23 21:17:37,960 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONDATA_RACE (23 of 58 remaining) [2023-11-23 21:17:37,960 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err16ASSERT_VIOLATIONDATA_RACE (22 of 58 remaining) [2023-11-23 21:17:37,960 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONDATA_RACE (21 of 58 remaining) [2023-11-23 21:17:37,961 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15ASSERT_VIOLATIONDATA_RACE (20 of 58 remaining) [2023-11-23 21:17:37,963 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err17ASSERT_VIOLATIONDATA_RACE (19 of 58 remaining) [2023-11-23 21:17:37,964 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (18 of 58 remaining) [2023-11-23 21:17:37,964 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (17 of 58 remaining) [2023-11-23 21:17:37,964 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (16 of 58 remaining) [2023-11-23 21:17:37,964 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (15 of 58 remaining) [2023-11-23 21:17:37,965 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (14 of 58 remaining) [2023-11-23 21:17:37,965 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (13 of 58 remaining) [2023-11-23 21:17:37,965 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (12 of 58 remaining) [2023-11-23 21:17:37,966 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (11 of 58 remaining) [2023-11-23 21:17:37,966 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (10 of 58 remaining) [2023-11-23 21:17:37,966 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (9 of 58 remaining) [2023-11-23 21:17:37,966 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err18ASSERT_VIOLATIONDATA_RACE (8 of 58 remaining) [2023-11-23 21:17:37,967 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (7 of 58 remaining) [2023-11-23 21:17:37,967 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (6 of 58 remaining) [2023-11-23 21:17:37,967 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONDATA_RACE (5 of 58 remaining) [2023-11-23 21:17:37,968 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONDATA_RACE (4 of 58 remaining) [2023-11-23 21:17:37,971 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err16ASSERT_VIOLATIONDATA_RACE (3 of 58 remaining) [2023-11-23 21:17:37,971 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONDATA_RACE (2 of 58 remaining) [2023-11-23 21:17:37,971 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15ASSERT_VIOLATIONDATA_RACE (1 of 58 remaining) [2023-11-23 21:17:37,975 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err17ASSERT_VIOLATIONDATA_RACE (0 of 58 remaining) [2023-11-23 21:17:37,976 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-23 21:17:37,976 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-11-23 21:17:37,977 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-23 21:17:37,977 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-11-23 21:17:38,219 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-23 21:17:38,230 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 400 places, 421 transitions, 860 flow