./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_02-simple_racefree.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_836d678b-1e42-4ec3-adf3-b3b2fe978023/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_836d678b-1e42-4ec3-adf3-b3b2fe978023/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_836d678b-1e42-4ec3-adf3-b3b2fe978023/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_836d678b-1e42-4ec3-adf3-b3b2fe978023/bin/utaipan-verify-mE87zJ7Ire/config/TaipanReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_02-simple_racefree.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_836d678b-1e42-4ec3-adf3-b3b2fe978023/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_836d678b-1e42-4ec3-adf3-b3b2fe978023/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 b3e7d0a2f10d1449a9a354d4032bafdd0ae7a7fd76aceb835acbee3134ec74e4 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 21:27:35,741 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 21:27:35,874 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_836d678b-1e42-4ec3-adf3-b3b2fe978023/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-DataRace-32bit-Taipan_Default.epf [2023-11-23 21:27:35,878 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 21:27:35,879 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 21:27:35,926 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 21:27:35,926 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 21:27:35,928 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 21:27:35,929 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 21:27:35,936 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 21:27:35,936 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-23 21:27:35,938 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-23 21:27:35,938 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-23 21:27:35,940 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-23 21:27:35,941 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-23 21:27:35,941 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-23 21:27:35,942 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-23 21:27:35,942 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-23 21:27:35,943 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-23 21:27:35,943 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-23 21:27:35,944 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-23 21:27:35,944 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-23 21:27:35,946 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 21:27:35,946 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 21:27:35,947 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-23 21:27:35,947 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 21:27:35,948 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-23 21:27:35,948 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 21:27:35,949 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 21:27:35,949 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 21:27:35,950 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 21:27:35,951 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-11-23 21:27:35,951 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-23 21:27:35,951 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-23 21:27:35,952 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 21:27:35,952 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 21:27:35,952 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 21:27:35,953 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 21:27:35,953 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:27:35,953 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 21:27:35,953 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 21:27:35,954 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 21:27:35,954 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-23 21:27:35,954 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 21:27:35,955 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 21:27:35,955 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 21:27:35,956 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-23 21:27:35,956 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 21:27:35,956 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_836d678b-1e42-4ec3-adf3-b3b2fe978023/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_836d678b-1e42-4ec3-adf3-b3b2fe978023/bin/utaipan-verify-mE87zJ7Ire Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b3e7d0a2f10d1449a9a354d4032bafdd0ae7a7fd76aceb835acbee3134ec74e4 [2023-11-23 21:27:36,276 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 21:27:36,318 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 21:27:36,321 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 21:27:36,324 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 21:27:36,324 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 21:27:36,326 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_836d678b-1e42-4ec3-adf3-b3b2fe978023/bin/utaipan-verify-mE87zJ7Ire/../../sv-benchmarks/c/goblint-regression/28-race_reach_02-simple_racefree.i [2023-11-23 21:27:39,807 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 21:27:40,158 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 21:27:40,164 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_836d678b-1e42-4ec3-adf3-b3b2fe978023/sv-benchmarks/c/goblint-regression/28-race_reach_02-simple_racefree.i [2023-11-23 21:27:40,193 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_836d678b-1e42-4ec3-adf3-b3b2fe978023/bin/utaipan-verify-mE87zJ7Ire/data/a74e9c37d/40484320be1a465480cfe649af157217/FLAG19d8b6dc7 [2023-11-23 21:27:40,214 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_836d678b-1e42-4ec3-adf3-b3b2fe978023/bin/utaipan-verify-mE87zJ7Ire/data/a74e9c37d/40484320be1a465480cfe649af157217 [2023-11-23 21:27:40,217 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 21:27:40,219 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 21:27:40,221 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 21:27:40,222 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 21:27:40,229 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 21:27:40,230 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:27:40" (1/1) ... [2023-11-23 21:27:40,232 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@502db46e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:27:40, skipping insertion in model container [2023-11-23 21:27:40,232 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:27:40" (1/1) ... [2023-11-23 21:27:40,323 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 21:27:40,900 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:27:40,925 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 21:27:40,984 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:27:41,044 INFO L206 MainTranslator]: Completed translation [2023-11-23 21:27:41,045 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:27:41 WrapperNode [2023-11-23 21:27:41,045 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 21:27:41,047 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 21:27:41,047 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 21:27:41,047 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 21:27:41,059 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:27:41" (1/1) ... [2023-11-23 21:27:41,082 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:27:41" (1/1) ... [2023-11-23 21:27:41,131 INFO L138 Inliner]: procedures = 171, calls = 36, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 97 [2023-11-23 21:27:41,132 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 21:27:41,133 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 21:27:41,133 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 21:27:41,134 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 21:27:41,146 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:27:41" (1/1) ... [2023-11-23 21:27:41,146 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:27:41" (1/1) ... [2023-11-23 21:27:41,152 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:27:41" (1/1) ... [2023-11-23 21:27:41,153 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:27:41" (1/1) ... [2023-11-23 21:27:41,164 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:27:41" (1/1) ... [2023-11-23 21:27:41,170 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:27:41" (1/1) ... [2023-11-23 21:27:41,173 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:27:41" (1/1) ... [2023-11-23 21:27:41,176 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:27:41" (1/1) ... [2023-11-23 21:27:41,181 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 21:27:41,182 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 21:27:41,183 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 21:27:41,183 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 21:27:41,184 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:27:41" (1/1) ... [2023-11-23 21:27:41,192 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:27:41,213 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_836d678b-1e42-4ec3-adf3-b3b2fe978023/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:27:41,229 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_836d678b-1e42-4ec3-adf3-b3b2fe978023/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 21:27:41,261 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_836d678b-1e42-4ec3-adf3-b3b2fe978023/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 21:27:41,295 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-23 21:27:41,295 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-23 21:27:41,296 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-23 21:27:41,296 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 21:27:41,296 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 21:27:41,297 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-11-23 21:27:41,297 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-11-23 21:27:41,297 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 21:27:41,298 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 21:27:41,298 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2023-11-23 21:27:41,298 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 21:27:41,298 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 21:27:41,300 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 21:27:41,552 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 21:27:41,556 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 21:27:41,997 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 21:27:42,076 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 21:27:42,080 INFO L309 CfgBuilder]: Removed 10 assume(true) statements. [2023-11-23 21:27:42,083 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:27:42 BoogieIcfgContainer [2023-11-23 21:27:42,084 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 21:27:42,088 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 21:27:42,088 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 21:27:42,093 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 21:27:42,094 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 09:27:40" (1/3) ... [2023-11-23 21:27:42,096 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fd791c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:27:42, skipping insertion in model container [2023-11-23 21:27:42,097 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:27:41" (2/3) ... [2023-11-23 21:27:42,101 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fd791c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:27:42, skipping insertion in model container [2023-11-23 21:27:42,102 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:27:42" (3/3) ... [2023-11-23 21:27:42,104 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_02-simple_racefree.i [2023-11-23 21:27:42,116 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-23 21:27:42,130 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 21:27:42,131 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-11-23 21:27:42,131 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-23 21:27:42,233 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-11-23 21:27:42,296 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 137 places, 147 transitions, 301 flow [2023-11-23 21:27:42,476 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 2347 states, 2320 states have (on average 2.198706896551724) internal successors, (5101), 2346 states have internal predecessors, (5101), 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 21:27:42,500 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 21:27:42,510 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;@71b63ba2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 21:27:42,511 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2023-11-23 21:27:42,522 INFO L276 IsEmpty]: Start isEmpty. Operand has 2347 states, 2320 states have (on average 2.198706896551724) internal successors, (5101), 2346 states have internal predecessors, (5101), 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 21:27:42,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-11-23 21:27:42,536 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:27:42,536 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:27:42,537 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 8 more)] === [2023-11-23 21:27:42,543 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:27:42,544 INFO L85 PathProgramCache]: Analyzing trace with hash 1063158675, now seen corresponding path program 1 times [2023-11-23 21:27:42,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:27:42,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121320282] [2023-11-23 21:27:42,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:27:42,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:27:42,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:27:43,025 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 21:27:43,025 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:27:43,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1121320282] [2023-11-23 21:27:43,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1121320282] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:27:43,027 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:27:43,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:27:43,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216820033] [2023-11-23 21:27:43,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:27:43,038 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:27:43,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:27:43,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:27:43,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:27:43,104 INFO L87 Difference]: Start difference. First operand has 2347 states, 2320 states have (on average 2.198706896551724) internal successors, (5101), 2346 states have internal predecessors, (5101), 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, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 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 21:27:43,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:27:43,268 INFO L93 Difference]: Finished difference Result 2195 states and 4244 transitions. [2023-11-23 21:27:43,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:27:43,271 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 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 43 [2023-11-23 21:27:43,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:27:43,307 INFO L225 Difference]: With dead ends: 2195 [2023-11-23 21:27:43,307 INFO L226 Difference]: Without dead ends: 2073 [2023-11-23 21:27:43,309 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:27:43,314 INFO L413 NwaCegarLoop]: 117 mSDtfsCounter, 49 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 226 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 21:27:43,316 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 226 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 21:27:43,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2073 states. [2023-11-23 21:27:43,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2073 to 2073. [2023-11-23 21:27:43,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2073 states, 2045 states have (on average 1.956479217603912) internal successors, (4001), 2072 states have internal predecessors, (4001), 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 21:27:43,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2073 states to 2073 states and 4001 transitions. [2023-11-23 21:27:43,583 INFO L78 Accepts]: Start accepts. Automaton has 2073 states and 4001 transitions. Word has length 43 [2023-11-23 21:27:43,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:27:43,583 INFO L495 AbstractCegarLoop]: Abstraction has 2073 states and 4001 transitions. [2023-11-23 21:27:43,584 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 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 21:27:43,584 INFO L276 IsEmpty]: Start isEmpty. Operand 2073 states and 4001 transitions. [2023-11-23 21:27:43,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2023-11-23 21:27:43,588 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:27:43,588 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:27:43,589 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 21:27:43,589 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 8 more)] === [2023-11-23 21:27:43,590 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:27:43,590 INFO L85 PathProgramCache]: Analyzing trace with hash -1481336055, now seen corresponding path program 1 times [2023-11-23 21:27:43,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:27:43,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547544431] [2023-11-23 21:27:43,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:27:43,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:27:43,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:27:43,751 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 21:27:43,751 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:27:43,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547544431] [2023-11-23 21:27:43,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1547544431] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:27:43,752 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:27:43,753 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 21:27:43,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382604384] [2023-11-23 21:27:43,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:27:43,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:27:43,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:27:43,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:27:43,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:27:43,757 INFO L87 Difference]: Start difference. First operand 2073 states and 4001 transitions. Second operand has 3 states, 2 states have (on average 24.0) internal successors, (48), 3 states have internal predecessors, (48), 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 21:27:43,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:27:43,961 INFO L93 Difference]: Finished difference Result 2609 states and 5002 transitions. [2023-11-23 21:27:43,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:27:43,962 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 24.0) internal successors, (48), 3 states have internal predecessors, (48), 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 48 [2023-11-23 21:27:43,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:27:43,987 INFO L225 Difference]: With dead ends: 2609 [2023-11-23 21:27:43,987 INFO L226 Difference]: Without dead ends: 2609 [2023-11-23 21:27:43,990 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:27:43,993 INFO L413 NwaCegarLoop]: 149 mSDtfsCounter, 88 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 248 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 21:27:43,995 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 248 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 21:27:44,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2609 states. [2023-11-23 21:27:44,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2609 to 1982. [2023-11-23 21:27:44,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1982 states, 1966 states have (on average 1.9404883011190235) internal successors, (3815), 1981 states have internal predecessors, (3815), 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 21:27:44,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1982 states to 1982 states and 3815 transitions. [2023-11-23 21:27:44,097 INFO L78 Accepts]: Start accepts. Automaton has 1982 states and 3815 transitions. Word has length 48 [2023-11-23 21:27:44,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:27:44,098 INFO L495 AbstractCegarLoop]: Abstraction has 1982 states and 3815 transitions. [2023-11-23 21:27:44,099 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 24.0) internal successors, (48), 3 states have internal predecessors, (48), 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 21:27:44,099 INFO L276 IsEmpty]: Start isEmpty. Operand 1982 states and 3815 transitions. [2023-11-23 21:27:44,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-11-23 21:27:44,112 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:27:44,113 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, 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 21:27:44,113 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-23 21:27:44,114 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 8 more)] === [2023-11-23 21:27:44,122 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:27:44,123 INFO L85 PathProgramCache]: Analyzing trace with hash -172459990, now seen corresponding path program 1 times [2023-11-23 21:27:44,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:27:44,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056800943] [2023-11-23 21:27:44,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:27:44,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:27:44,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 21:27:44,177 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-23 21:27:44,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 21:27:44,255 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-11-23 21:27:44,256 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-23 21:27:44,257 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (10 of 11 remaining) [2023-11-23 21:27:44,260 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (9 of 11 remaining) [2023-11-23 21:27:44,261 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (8 of 11 remaining) [2023-11-23 21:27:44,262 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (7 of 11 remaining) [2023-11-23 21:27:44,262 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (6 of 11 remaining) [2023-11-23 21:27:44,263 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (5 of 11 remaining) [2023-11-23 21:27:44,263 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (4 of 11 remaining) [2023-11-23 21:27:44,263 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (3 of 11 remaining) [2023-11-23 21:27:44,264 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (2 of 11 remaining) [2023-11-23 21:27:44,264 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (1 of 11 remaining) [2023-11-23 21:27:44,265 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (0 of 11 remaining) [2023-11-23 21:27:44,265 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-23 21:27:44,270 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-11-23 21:27:44,273 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-23 21:27:44,274 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-11-23 21:27:44,318 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-23 21:27:44,327 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 181 places, 196 transitions, 408 flow [2023-11-23 21:27:48,515 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 98611 states, 98459 states have (on average 3.2971287541006915) internal successors, (324632), 98610 states have internal predecessors, (324632), 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 21:27:48,518 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 21:27:48,528 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;@71b63ba2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 21:27:48,529 INFO L358 AbstractCegarLoop]: Starting to check reachability of 15 error locations. [2023-11-23 21:27:48,748 INFO L276 IsEmpty]: Start isEmpty. Operand has 98611 states, 98459 states have (on average 3.2971287541006915) internal successors, (324632), 98610 states have internal predecessors, (324632), 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 21:27:48,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-11-23 21:27:48,750 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:27:48,750 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:27:48,751 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2023-11-23 21:27:48,752 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:27:48,752 INFO L85 PathProgramCache]: Analyzing trace with hash -1050209833, now seen corresponding path program 1 times [2023-11-23 21:27:48,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:27:48,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748728426] [2023-11-23 21:27:48,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:27:48,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:27:48,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:27:49,185 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 21:27:49,187 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:27:49,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748728426] [2023-11-23 21:27:49,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [748728426] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:27:49,188 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:27:49,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:27:49,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559514286] [2023-11-23 21:27:49,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:27:49,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:27:49,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:27:49,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:27:49,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:27:49,481 INFO L87 Difference]: Start difference. First operand has 98611 states, 98459 states have (on average 3.2971287541006915) internal successors, (324632), 98610 states have internal predecessors, (324632), 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, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 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 21:27:52,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:27:52,010 INFO L93 Difference]: Finished difference Result 93167 states and 270165 transitions. [2023-11-23 21:27:52,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:27:52,012 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 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 43 [2023-11-23 21:27:52,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:27:52,895 INFO L225 Difference]: With dead ends: 93167 [2023-11-23 21:27:52,895 INFO L226 Difference]: Without dead ends: 91626 [2023-11-23 21:27:52,896 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:27:52,897 INFO L413 NwaCegarLoop]: 152 mSDtfsCounter, 49 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 298 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 21:27:52,898 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 298 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 21:27:53,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91626 states. [2023-11-23 21:27:56,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91626 to 91626. [2023-11-23 21:27:56,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91626 states, 91451 states have (on average 2.9059605690479056) internal successors, (265753), 91625 states have internal predecessors, (265753), 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 21:27:57,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91626 states to 91626 states and 265753 transitions. [2023-11-23 21:27:57,785 INFO L78 Accepts]: Start accepts. Automaton has 91626 states and 265753 transitions. Word has length 43 [2023-11-23 21:27:57,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:27:57,785 INFO L495 AbstractCegarLoop]: Abstraction has 91626 states and 265753 transitions. [2023-11-23 21:27:57,786 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 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 21:27:57,786 INFO L276 IsEmpty]: Start isEmpty. Operand 91626 states and 265753 transitions. [2023-11-23 21:27:57,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2023-11-23 21:27:57,816 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:27:57,816 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:27:57,816 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-23 21:27:57,817 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2023-11-23 21:27:57,818 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:27:57,818 INFO L85 PathProgramCache]: Analyzing trace with hash 848611384, now seen corresponding path program 1 times [2023-11-23 21:27:57,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:27:57,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400320920] [2023-11-23 21:27:57,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:27:57,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:27:57,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:27:57,928 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 21:27:57,929 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:27:57,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400320920] [2023-11-23 21:27:57,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1400320920] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:27:57,930 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:27:57,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 21:27:57,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936936319] [2023-11-23 21:27:57,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:27:57,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:27:57,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:27:57,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:27:57,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:27:57,934 INFO L87 Difference]: Start difference. First operand 91626 states and 265753 transitions. Second operand has 3 states, 2 states have (on average 24.0) internal successors, (48), 3 states have internal predecessors, (48), 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 21:27:59,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:27:59,526 INFO L93 Difference]: Finished difference Result 143935 states and 411499 transitions. [2023-11-23 21:27:59,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:27:59,526 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 24.0) internal successors, (48), 3 states have internal predecessors, (48), 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 48 [2023-11-23 21:27:59,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:28:00,411 INFO L225 Difference]: With dead ends: 143935 [2023-11-23 21:28:00,412 INFO L226 Difference]: Without dead ends: 143935 [2023-11-23 21:28:00,412 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:28:00,414 INFO L413 NwaCegarLoop]: 203 mSDtfsCounter, 125 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 331 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 21:28:00,416 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [125 Valid, 331 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 21:28:00,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143935 states. [2023-11-23 21:28:03,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143935 to 94862. [2023-11-23 21:28:03,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94862 states, 94715 states have (on average 2.8900490946523782) internal successors, (273731), 94861 states have internal predecessors, (273731), 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 21:28:04,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94862 states to 94862 states and 273731 transitions. [2023-11-23 21:28:04,284 INFO L78 Accepts]: Start accepts. Automaton has 94862 states and 273731 transitions. Word has length 48 [2023-11-23 21:28:04,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:28:04,285 INFO L495 AbstractCegarLoop]: Abstraction has 94862 states and 273731 transitions. [2023-11-23 21:28:04,285 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 24.0) internal successors, (48), 3 states have internal predecessors, (48), 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 21:28:04,285 INFO L276 IsEmpty]: Start isEmpty. Operand 94862 states and 273731 transitions. [2023-11-23 21:28:04,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-11-23 21:28:04,287 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:28:04,287 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, 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 21:28:04,288 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-23 21:28:04,288 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2023-11-23 21:28:04,289 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:28:04,289 INFO L85 PathProgramCache]: Analyzing trace with hash 387016204, now seen corresponding path program 1 times [2023-11-23 21:28:04,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:28:04,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610489512] [2023-11-23 21:28:04,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:28:04,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:28:04,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:28:04,356 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 21:28:04,357 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:28:04,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1610489512] [2023-11-23 21:28:04,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1610489512] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:28:04,358 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:28:04,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 21:28:04,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716142415] [2023-11-23 21:28:04,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:28:04,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:28:04,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:28:04,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:28:04,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:28:04,360 INFO L87 Difference]: Start difference. First operand 94862 states and 273731 transitions. Second operand has 3 states, 2 states have (on average 26.5) internal successors, (53), 3 states have internal predecessors, (53), 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 21:28:05,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:28:05,714 INFO L93 Difference]: Finished difference Result 100612 states and 290313 transitions. [2023-11-23 21:28:05,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:28:05,715 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 26.5) internal successors, (53), 3 states have internal predecessors, (53), 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 53 [2023-11-23 21:28:05,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:28:06,023 INFO L225 Difference]: With dead ends: 100612 [2023-11-23 21:28:06,023 INFO L226 Difference]: Without dead ends: 100612 [2023-11-23 21:28:06,023 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:28:06,024 INFO L413 NwaCegarLoop]: 226 mSDtfsCounter, 94 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 352 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-23 21:28:06,025 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 352 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 21:28:06,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100612 states. [2023-11-23 21:28:09,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100612 to 96532. [2023-11-23 21:28:09,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96532 states, 96390 states have (on average 2.8891690009337068) internal successors, (278487), 96531 states have internal predecessors, (278487), 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 21:28:09,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96532 states to 96532 states and 278487 transitions. [2023-11-23 21:28:09,541 INFO L78 Accepts]: Start accepts. Automaton has 96532 states and 278487 transitions. Word has length 53 [2023-11-23 21:28:09,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:28:09,542 INFO L495 AbstractCegarLoop]: Abstraction has 96532 states and 278487 transitions. [2023-11-23 21:28:09,542 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 26.5) internal successors, (53), 3 states have internal predecessors, (53), 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 21:28:09,542 INFO L276 IsEmpty]: Start isEmpty. Operand 96532 states and 278487 transitions. [2023-11-23 21:28:09,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-11-23 21:28:09,545 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:28:09,545 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:28:09,545 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-23 21:28:09,546 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2023-11-23 21:28:09,546 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:28:09,546 INFO L85 PathProgramCache]: Analyzing trace with hash 1819485380, now seen corresponding path program 1 times [2023-11-23 21:28:09,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:28:09,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407271483] [2023-11-23 21:28:09,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:28:09,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:28:09,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 21:28:09,592 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-23 21:28:09,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 21:28:09,635 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-11-23 21:28:09,636 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-23 21:28:09,636 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (14 of 15 remaining) [2023-11-23 21:28:09,636 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (13 of 15 remaining) [2023-11-23 21:28:09,638 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (12 of 15 remaining) [2023-11-23 21:28:09,639 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (11 of 15 remaining) [2023-11-23 21:28:09,639 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (10 of 15 remaining) [2023-11-23 21:28:09,639 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (9 of 15 remaining) [2023-11-23 21:28:09,640 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (8 of 15 remaining) [2023-11-23 21:28:09,640 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (7 of 15 remaining) [2023-11-23 21:28:09,640 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (6 of 15 remaining) [2023-11-23 21:28:09,640 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (5 of 15 remaining) [2023-11-23 21:28:09,640 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (4 of 15 remaining) [2023-11-23 21:28:09,641 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (3 of 15 remaining) [2023-11-23 21:28:09,641 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (2 of 15 remaining) [2023-11-23 21:28:09,641 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (1 of 15 remaining) [2023-11-23 21:28:09,641 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (0 of 15 remaining) [2023-11-23 21:28:09,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-23 21:28:09,642 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2023-11-23 21:28:09,643 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-23 21:28:09,643 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-11-23 21:28:09,690 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-23 21:28:09,695 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 225 places, 245 transitions, 517 flow