./Ultimate.py --spec /storage/repos/ultimate/trunk/examples/svcomp/properties/no-data-race.prp --file /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-parray-copy.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version efd9311c Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/config/TaipanReach.xml -i /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-parray-copy.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/config/svcomp-DataRace-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UTaipan-linux --witnessprinter.witness.filename witness.graphml --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 a1f81f307bb0fd2f7d30845e458dba6e8acf9b3ee1da86e74967e4c3005bce62 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-efd9311-m [2022-04-18 20:21:52,803 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-04-18 20:21:52,805 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-04-18 20:21:52,856 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-04-18 20:21:52,857 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-04-18 20:21:52,858 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-04-18 20:21:52,860 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-04-18 20:21:52,863 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-04-18 20:21:52,865 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-04-18 20:21:52,869 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-04-18 20:21:52,869 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-04-18 20:21:52,871 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-04-18 20:21:52,872 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-04-18 20:21:52,873 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-04-18 20:21:52,874 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-04-18 20:21:52,877 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-04-18 20:21:52,878 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-04-18 20:21:52,879 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-04-18 20:21:52,880 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-04-18 20:21:52,885 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-04-18 20:21:52,887 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-04-18 20:21:52,888 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-04-18 20:21:52,889 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-04-18 20:21:52,890 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-04-18 20:21:52,891 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-04-18 20:21:52,897 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-04-18 20:21:52,897 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-04-18 20:21:52,897 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-04-18 20:21:52,898 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-04-18 20:21:52,899 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-04-18 20:21:52,900 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-04-18 20:21:52,900 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-04-18 20:21:52,902 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-04-18 20:21:52,902 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-04-18 20:21:52,903 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-04-18 20:21:52,904 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-04-18 20:21:52,904 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-04-18 20:21:52,904 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-04-18 20:21:52,905 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-04-18 20:21:52,905 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-04-18 20:21:52,905 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-04-18 20:21:52,907 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-04-18 20:21:52,908 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/config/svcomp-DataRace-32bit-Taipan_Default.epf [2022-04-18 20:21:52,935 INFO L113 SettingsManager]: Loading preferences was successful [2022-04-18 20:21:52,935 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-04-18 20:21:52,935 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-04-18 20:21:52,936 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-04-18 20:21:52,936 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-04-18 20:21:52,936 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-04-18 20:21:52,937 INFO L138 SettingsManager]: * User list type=DISABLED [2022-04-18 20:21:52,937 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-04-18 20:21:52,937 INFO L138 SettingsManager]: * Explicit value domain=true [2022-04-18 20:21:52,938 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-04-18 20:21:52,938 INFO L138 SettingsManager]: * Octagon Domain=false [2022-04-18 20:21:52,938 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-04-18 20:21:52,938 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-04-18 20:21:52,938 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-04-18 20:21:52,939 INFO L138 SettingsManager]: * Interval Domain=false [2022-04-18 20:21:52,939 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-04-18 20:21:52,939 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-04-18 20:21:52,939 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-04-18 20:21:52,940 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-04-18 20:21:52,941 INFO L138 SettingsManager]: * sizeof long=4 [2022-04-18 20:21:52,941 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-04-18 20:21:52,941 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-04-18 20:21:52,941 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-04-18 20:21:52,941 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-04-18 20:21:52,941 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-04-18 20:21:52,942 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-04-18 20:21:52,942 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-04-18 20:21:52,942 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-04-18 20:21:52,942 INFO L138 SettingsManager]: * sizeof long double=12 [2022-04-18 20:21:52,943 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-04-18 20:21:52,943 INFO L138 SettingsManager]: * Use constant arrays=true [2022-04-18 20:21:52,943 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-04-18 20:21:52,943 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-04-18 20:21:52,943 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-04-18 20:21:52,943 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-18 20:21:52,944 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-04-18 20:21:52,944 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-04-18 20:21:52,944 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-04-18 20:21:52,944 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-04-18 20:21:52,944 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-04-18 20:21:52,945 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-04-18 20:21:52,945 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-04-18 20:21:52,945 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-04-18 20:21:52,945 INFO L138 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:/storage/repos/ultimate/releaseScripts/default/UTaipan-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UTaipan-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a1f81f307bb0fd2f7d30845e458dba6e8acf9b3ee1da86e74967e4c3005bce62 [2022-04-18 20:21:53,154 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-04-18 20:21:53,182 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-04-18 20:21:53,185 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-04-18 20:21:53,186 INFO L271 PluginConnector]: Initializing CDTParser... [2022-04-18 20:21:53,187 INFO L275 PluginConnector]: CDTParser initialized [2022-04-18 20:21:53,188 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-parray-copy.wvr.c [2022-04-18 20:21:53,245 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/8f0b42797/e197b5b581ac441d8e7252212464d68e/FLAGe3cad363f [2022-04-18 20:21:53,541 INFO L306 CDTParser]: Found 1 translation units. [2022-04-18 20:21:53,542 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-parray-copy.wvr.c [2022-04-18 20:21:53,547 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/8f0b42797/e197b5b581ac441d8e7252212464d68e/FLAGe3cad363f [2022-04-18 20:21:53,973 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/8f0b42797/e197b5b581ac441d8e7252212464d68e [2022-04-18 20:21:53,976 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-04-18 20:21:53,977 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-04-18 20:21:53,980 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-04-18 20:21:53,980 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-04-18 20:21:53,986 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-04-18 20:21:53,986 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 08:21:53" (1/1) ... [2022-04-18 20:21:53,987 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@40b8d50e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 08:21:53, skipping insertion in model container [2022-04-18 20:21:53,988 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 08:21:53" (1/1) ... [2022-04-18 20:21:53,996 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-04-18 20:21:54,015 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-04-18 20:21:54,188 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-parray-copy.wvr.c[2385,2398] [2022-04-18 20:21:54,193 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-18 20:21:54,199 INFO L203 MainTranslator]: Completed pre-run [2022-04-18 20:21:54,225 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-parray-copy.wvr.c[2385,2398] [2022-04-18 20:21:54,229 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-18 20:21:54,239 INFO L208 MainTranslator]: Completed translation [2022-04-18 20:21:54,239 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 08:21:54 WrapperNode [2022-04-18 20:21:54,240 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-04-18 20:21:54,241 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-04-18 20:21:54,241 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-04-18 20:21:54,241 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-04-18 20:21:54,246 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 08:21:54" (1/1) ... [2022-04-18 20:21:54,259 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 08:21:54" (1/1) ... [2022-04-18 20:21:54,287 INFO L137 Inliner]: procedures = 24, calls = 41, calls flagged for inlining = 9, calls inlined = 11, statements flattened = 218 [2022-04-18 20:21:54,287 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-04-18 20:21:54,288 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-04-18 20:21:54,288 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-04-18 20:21:54,288 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-04-18 20:21:54,295 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 08:21:54" (1/1) ... [2022-04-18 20:21:54,295 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 08:21:54" (1/1) ... [2022-04-18 20:21:54,300 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 08:21:54" (1/1) ... [2022-04-18 20:21:54,303 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 08:21:54" (1/1) ... [2022-04-18 20:21:54,325 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 08:21:54" (1/1) ... [2022-04-18 20:21:54,330 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 08:21:54" (1/1) ... [2022-04-18 20:21:54,341 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 08:21:54" (1/1) ... [2022-04-18 20:21:54,346 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-04-18 20:21:54,347 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-04-18 20:21:54,347 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-04-18 20:21:54,348 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-04-18 20:21:54,348 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 08:21:54" (1/1) ... [2022-04-18 20:21:54,359 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-18 20:21:54,368 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 [2022-04-18 20:21:54,384 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-04-18 20:21:54,407 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-04-18 20:21:54,420 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-04-18 20:21:54,420 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-04-18 20:21:54,421 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-04-18 20:21:54,421 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-04-18 20:21:54,421 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-04-18 20:21:54,421 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-04-18 20:21:54,422 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-04-18 20:21:54,422 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-04-18 20:21:54,422 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-04-18 20:21:54,422 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-04-18 20:21:54,422 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-04-18 20:21:54,422 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-04-18 20:21:54,423 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-04-18 20:21:54,423 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-04-18 20:21:54,423 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-04-18 20:21:54,424 WARN L208 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-04-18 20:21:54,547 INFO L234 CfgBuilder]: Building ICFG [2022-04-18 20:21:54,548 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-04-18 20:21:55,097 INFO L275 CfgBuilder]: Performing block encoding [2022-04-18 20:21:55,113 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-04-18 20:21:55,113 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2022-04-18 20:21:55,115 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 08:21:55 BoogieIcfgContainer [2022-04-18 20:21:55,115 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-04-18 20:21:55,117 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-04-18 20:21:55,117 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-04-18 20:21:55,121 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-04-18 20:21:55,121 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 08:21:53" (1/3) ... [2022-04-18 20:21:55,122 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2022a5e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 08:21:55, skipping insertion in model container [2022-04-18 20:21:55,122 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 08:21:54" (2/3) ... [2022-04-18 20:21:55,123 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2022a5e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 08:21:55, skipping insertion in model container [2022-04-18 20:21:55,123 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 08:21:55" (3/3) ... [2022-04-18 20:21:55,124 INFO L111 eAbstractionObserver]: Analyzing ICFG popl20-more-parray-copy.wvr.c [2022-04-18 20:21:55,128 WARN L147 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-04-18 20:21:55,128 INFO L202 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-04-18 20:21:55,129 INFO L161 ceAbstractionStarter]: Applying trace abstraction to program that has 35 error locations. [2022-04-18 20:21:55,129 INFO L504 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-04-18 20:21:55,203 INFO L135 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-04-18 20:21:55,236 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-18 20:21:55,242 INFO L340 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=LoopsAndPotentialCycles, 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 [2022-04-18 20:21:55,243 INFO L341 AbstractCegarLoop]: Starting to check reachability of 54 error locations. [2022-04-18 20:21:55,258 INFO L116 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-04-18 20:21:55,268 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 374 places, 383 transitions, 790 flow [2022-04-18 20:21:55,271 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 374 places, 383 transitions, 790 flow [2022-04-18 20:21:55,272 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 374 places, 383 transitions, 790 flow [2022-04-18 20:21:55,401 INFO L129 PetriNetUnfolder]: 19/380 cut-off events. [2022-04-18 20:21:55,401 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-04-18 20:21:55,409 INFO L84 FinitePrefix]: Finished finitePrefix Result has 393 conditions, 380 events. 19/380 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 512 event pairs, 0 based on Foata normal form. 0/326 useless extension candidates. Maximal degree in co-relation 256. Up to 2 conditions per place. [2022-04-18 20:21:55,419 INFO L116 LiptonReduction]: Number of co-enabled transitions 12972 [2022-04-18 20:22:04,844 INFO L131 LiptonReduction]: Checked pairs total: 89387 [2022-04-18 20:22:04,844 INFO L133 LiptonReduction]: Total number of compositions: 390 [2022-04-18 20:22:04,851 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 127 places, 125 transitions, 274 flow [2022-04-18 20:22:07,925 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 98377 states, 97809 states have (on average 3.9766585897003344) internal successors, (388953), 98376 states have internal predecessors, (388953), 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) [2022-04-18 20:22:08,140 INFO L276 IsEmpty]: Start isEmpty. Operand has 98377 states, 97809 states have (on average 3.9766585897003344) internal successors, (388953), 98376 states have internal predecessors, (388953), 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) [2022-04-18 20:22:08,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2 [2022-04-18 20:22:08,144 INFO L491 BasicCegarLoop]: Found error trace [2022-04-18 20:22:08,144 INFO L499 BasicCegarLoop]: trace histogram [1] [2022-04-18 20:22:08,145 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 50 more)] === [2022-04-18 20:22:08,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 20:22:08,150 INFO L85 PathProgramCache]: Analyzing trace with hash 1375, now seen corresponding path program 1 times [2022-04-18 20:22:08,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-04-18 20:22:08,161 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129459803] [2022-04-18 20:22:08,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 20:22:08,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 20:22:08,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 20:22:08,459 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-18 20:22:08,460 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-04-18 20:22:08,460 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129459803] [2022-04-18 20:22:08,461 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2129459803] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 20:22:08,462 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 20:22:08,462 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-04-18 20:22:08,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103825191] [2022-04-18 20:22:08,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 20:22:08,467 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-04-18 20:22:08,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-04-18 20:22:08,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-04-18 20:22:08,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-04-18 20:22:08,659 INFO L87 Difference]: Start difference. First operand has 98377 states, 97809 states have (on average 3.9766585897003344) internal successors, (388953), 98376 states have internal predecessors, (388953), 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 1.0) internal successors, (1), 1 states have internal predecessors, (1), 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) [2022-04-18 20:22:09,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-18 20:22:09,961 INFO L93 Difference]: Finished difference Result 61725 states and 235509 transitions. [2022-04-18 20:22:09,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-04-18 20:22:09,963 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 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 1 [2022-04-18 20:22:09,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-18 20:22:10,736 INFO L225 Difference]: With dead ends: 61725 [2022-04-18 20:22:10,736 INFO L226 Difference]: Without dead ends: 61723 [2022-04-18 20:22:10,737 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 0 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-04-18 20:22:10,740 INFO L913 BasicCegarLoop]: 57 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-18 20:22:10,741 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 57 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-18 20:22:10,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61723 states. [2022-04-18 20:22:12,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61723 to 61723. [2022-04-18 20:22:13,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61723 states, 61658 states have (on average 3.819553018262026) internal successors, (235506), 61722 states have internal predecessors, (235506), 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) [2022-04-18 20:22:13,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61723 states to 61723 states and 235506 transitions. [2022-04-18 20:22:13,886 INFO L78 Accepts]: Start accepts. Automaton has 61723 states and 235506 transitions. Word has length 1 [2022-04-18 20:22:13,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-18 20:22:13,886 INFO L478 AbstractCegarLoop]: Abstraction has 61723 states and 235506 transitions. [2022-04-18 20:22:13,887 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 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) [2022-04-18 20:22:13,887 INFO L276 IsEmpty]: Start isEmpty. Operand 61723 states and 235506 transitions. [2022-04-18 20:22:13,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-04-18 20:22:13,891 INFO L491 BasicCegarLoop]: Found error trace [2022-04-18 20:22:13,891 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 20:22:13,892 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-04-18 20:22:13,892 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 50 more)] === [2022-04-18 20:22:13,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 20:22:13,893 INFO L85 PathProgramCache]: Analyzing trace with hash -1577127084, now seen corresponding path program 1 times [2022-04-18 20:22:13,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-04-18 20:22:13,893 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952381640] [2022-04-18 20:22:13,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 20:22:13,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 20:22:13,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 20:22:14,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-18 20:22:14,074 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-04-18 20:22:14,074 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1952381640] [2022-04-18 20:22:14,075 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1952381640] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 20:22:14,075 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 20:22:14,075 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-18 20:22:14,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866570343] [2022-04-18 20:22:14,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 20:22:14,077 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-04-18 20:22:14,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-04-18 20:22:14,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-04-18 20:22:14,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-04-18 20:22:14,078 INFO L87 Difference]: Start difference. First operand 61723 states and 235506 transitions. Second operand has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 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) [2022-04-18 20:22:15,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-18 20:22:15,929 INFO L93 Difference]: Finished difference Result 101010 states and 382078 transitions. [2022-04-18 20:22:15,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-04-18 20:22:15,930 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 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 14 [2022-04-18 20:22:15,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-18 20:22:16,758 INFO L225 Difference]: With dead ends: 101010 [2022-04-18 20:22:16,758 INFO L226 Difference]: Without dead ends: 101010 [2022-04-18 20:22:16,759 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-04-18 20:22:16,760 INFO L913 BasicCegarLoop]: 77 mSDtfsCounter, 163 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 616 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 695 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 616 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-04-18 20:22:16,761 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [163 Valid, 122 Invalid, 695 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 616 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-04-18 20:22:16,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101010 states. [2022-04-18 20:22:20,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101010 to 90593. [2022-04-18 20:22:20,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90593 states, 90528 states have (on average 3.8770987981618945) internal successors, (350986), 90592 states have internal predecessors, (350986), 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) [2022-04-18 20:22:20,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90593 states to 90593 states and 350986 transitions. [2022-04-18 20:22:20,633 INFO L78 Accepts]: Start accepts. Automaton has 90593 states and 350986 transitions. Word has length 14 [2022-04-18 20:22:20,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-18 20:22:20,634 INFO L478 AbstractCegarLoop]: Abstraction has 90593 states and 350986 transitions. [2022-04-18 20:22:20,635 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 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) [2022-04-18 20:22:20,635 INFO L276 IsEmpty]: Start isEmpty. Operand 90593 states and 350986 transitions. [2022-04-18 20:22:20,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-04-18 20:22:20,638 INFO L491 BasicCegarLoop]: Found error trace [2022-04-18 20:22:20,638 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 20:22:20,639 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-04-18 20:22:20,639 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err3ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 50 more)] === [2022-04-18 20:22:20,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 20:22:20,640 INFO L85 PathProgramCache]: Analyzing trace with hash 1329030545, now seen corresponding path program 1 times [2022-04-18 20:22:20,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-04-18 20:22:20,640 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [781524413] [2022-04-18 20:22:20,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 20:22:20,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 20:22:20,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 20:22:20,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-18 20:22:20,819 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-04-18 20:22:20,819 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [781524413] [2022-04-18 20:22:20,820 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [781524413] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 20:22:20,820 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 20:22:20,820 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-18 20:22:20,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463244316] [2022-04-18 20:22:20,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 20:22:20,821 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-04-18 20:22:20,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-04-18 20:22:20,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-04-18 20:22:20,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-04-18 20:22:20,822 INFO L87 Difference]: Start difference. First operand 90593 states and 350986 transitions. Second operand has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 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) [2022-04-18 20:22:22,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-18 20:22:22,708 INFO L93 Difference]: Finished difference Result 117997 states and 458126 transitions. [2022-04-18 20:22:22,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-04-18 20:22:22,709 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 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 14 [2022-04-18 20:22:22,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-18 20:22:23,886 INFO L225 Difference]: With dead ends: 117997 [2022-04-18 20:22:23,886 INFO L226 Difference]: Without dead ends: 117997 [2022-04-18 20:22:23,886 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-04-18 20:22:23,887 INFO L913 BasicCegarLoop]: 76 mSDtfsCounter, 122 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 626 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 681 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 626 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-04-18 20:22:23,888 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [122 Valid, 120 Invalid, 681 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 626 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-04-18 20:22:24,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117997 states. [2022-04-18 20:22:26,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117997 to 108853. [2022-04-18 20:22:26,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108853 states, 108788 states have (on average 3.882578960914807) internal successors, (422378), 108852 states have internal predecessors, (422378), 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) [2022-04-18 20:22:28,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108853 states to 108853 states and 422378 transitions. [2022-04-18 20:22:28,024 INFO L78 Accepts]: Start accepts. Automaton has 108853 states and 422378 transitions. Word has length 14 [2022-04-18 20:22:28,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-18 20:22:28,025 INFO L478 AbstractCegarLoop]: Abstraction has 108853 states and 422378 transitions. [2022-04-18 20:22:28,025 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 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) [2022-04-18 20:22:28,025 INFO L276 IsEmpty]: Start isEmpty. Operand 108853 states and 422378 transitions. [2022-04-18 20:22:28,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-04-18 20:22:28,028 INFO L491 BasicCegarLoop]: Found error trace [2022-04-18 20:22:28,029 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 20:22:28,029 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-04-18 20:22:28,029 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting thread2Err3ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 50 more)] === [2022-04-18 20:22:28,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 20:22:28,030 INFO L85 PathProgramCache]: Analyzing trace with hash 2132684441, now seen corresponding path program 1 times [2022-04-18 20:22:28,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-04-18 20:22:28,030 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183499049] [2022-04-18 20:22:28,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 20:22:28,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 20:22:28,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 20:22:28,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-18 20:22:28,125 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-04-18 20:22:28,126 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183499049] [2022-04-18 20:22:28,126 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1183499049] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 20:22:28,126 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 20:22:28,126 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-18 20:22:28,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577166448] [2022-04-18 20:22:28,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 20:22:28,127 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-04-18 20:22:28,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-04-18 20:22:28,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-04-18 20:22:28,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-04-18 20:22:28,128 INFO L87 Difference]: Start difference. First operand 108853 states and 422378 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 3 states have internal predecessors, (16), 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) [2022-04-18 20:22:29,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-18 20:22:29,574 INFO L93 Difference]: Finished difference Result 108856 states and 422381 transitions. [2022-04-18 20:22:29,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-04-18 20:22:29,575 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 3 states have internal predecessors, (16), 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 16 [2022-04-18 20:22:29,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-18 20:22:30,171 INFO L225 Difference]: With dead ends: 108856 [2022-04-18 20:22:30,172 INFO L226 Difference]: Without dead ends: 108855 [2022-04-18 20:22:30,172 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-04-18 20:22:30,173 INFO L913 BasicCegarLoop]: 57 mSDtfsCounter, 0 mSDsluCounter, 164 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 171 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-18 20:22:30,173 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 171 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-18 20:22:30,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108855 states. [2022-04-18 20:22:33,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108855 to 108855. [2022-04-18 20:22:33,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108855 states, 108790 states have (on average 3.8825259674602446) internal successors, (422380), 108854 states have internal predecessors, (422380), 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) [2022-04-18 20:22:34,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108855 states to 108855 states and 422380 transitions. [2022-04-18 20:22:34,245 INFO L78 Accepts]: Start accepts. Automaton has 108855 states and 422380 transitions. Word has length 16 [2022-04-18 20:22:34,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-18 20:22:34,245 INFO L478 AbstractCegarLoop]: Abstraction has 108855 states and 422380 transitions. [2022-04-18 20:22:34,245 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 3 states have internal predecessors, (16), 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) [2022-04-18 20:22:34,246 INFO L276 IsEmpty]: Start isEmpty. Operand 108855 states and 422380 transitions. [2022-04-18 20:22:34,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-04-18 20:22:34,254 INFO L491 BasicCegarLoop]: Found error trace [2022-04-18 20:22:34,255 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 20:22:34,255 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-04-18 20:22:34,256 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err3ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 50 more)] === [2022-04-18 20:22:34,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 20:22:34,259 INFO L85 PathProgramCache]: Analyzing trace with hash 1077087180, now seen corresponding path program 1 times [2022-04-18 20:22:34,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-04-18 20:22:34,260 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735995463] [2022-04-18 20:22:34,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 20:22:34,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 20:22:34,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 20:22:34,433 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-04-18 20:22:34,433 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-04-18 20:22:34,434 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735995463] [2022-04-18 20:22:34,434 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [735995463] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-18 20:22:34,434 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [627958377] [2022-04-18 20:22:34,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 20:22:34,435 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-18 20:22:34,435 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 [2022-04-18 20:22:34,439 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-18 20:22:34,440 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-04-18 20:22:34,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 20:22:34,531 INFO L263 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 8 conjunts are in the unsatisfiable core [2022-04-18 20:22:34,535 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-18 20:22:34,666 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-04-18 20:22:34,666 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-18 20:22:34,753 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-04-18 20:22:34,754 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [627958377] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-18 20:22:34,754 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [582238517] [2022-04-18 20:22:34,782 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:295) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:270) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1603) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:497) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:235) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:112) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:91) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:595) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:414) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:349) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:331) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:411) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:301) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:224) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:172) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:153) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-04-18 20:22:34,784 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-18 20:22:34,784 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2022-04-18 20:22:34,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130907134] [2022-04-18 20:22:34,784 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-18 20:22:34,785 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-04-18 20:22:34,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-04-18 20:22:34,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-04-18 20:22:34,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2022-04-18 20:22:34,786 INFO L87 Difference]: Start difference. First operand 108855 states and 422380 transitions. Second operand has 13 states, 13 states have (on average 2.3076923076923075) internal successors, (30), 12 states have internal predecessors, (30), 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) [2022-04-18 20:22:36,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-18 20:22:36,874 INFO L93 Difference]: Finished difference Result 131399 states and 503984 transitions. [2022-04-18 20:22:36,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-04-18 20:22:36,875 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.3076923076923075) internal successors, (30), 12 states have internal predecessors, (30), 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 18 [2022-04-18 20:22:36,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-18 20:22:37,572 INFO L225 Difference]: With dead ends: 131399 [2022-04-18 20:22:37,572 INFO L226 Difference]: Without dead ends: 131399 [2022-04-18 20:22:37,573 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2022-04-18 20:22:37,574 INFO L913 BasicCegarLoop]: 96 mSDtfsCounter, 402 mSDsluCounter, 1096 mSDsCounter, 0 mSdLazyCounter, 527 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 402 SdHoareTripleChecker+Valid, 875 SdHoareTripleChecker+Invalid, 544 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 527 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-04-18 20:22:37,574 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [402 Valid, 875 Invalid, 544 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 527 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-04-18 20:22:37,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131399 states. [2022-04-18 20:22:40,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131399 to 125654. [2022-04-18 20:22:40,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125654 states, 125589 states have (on average 3.8821393593387956) internal successors, (487554), 125653 states have internal predecessors, (487554), 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) [2022-04-18 20:22:42,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125654 states to 125654 states and 487554 transitions. [2022-04-18 20:22:42,280 INFO L78 Accepts]: Start accepts. Automaton has 125654 states and 487554 transitions. Word has length 18 [2022-04-18 20:22:42,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-18 20:22:42,280 INFO L478 AbstractCegarLoop]: Abstraction has 125654 states and 487554 transitions. [2022-04-18 20:22:42,280 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.3076923076923075) internal successors, (30), 12 states have internal predecessors, (30), 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) [2022-04-18 20:22:42,280 INFO L276 IsEmpty]: Start isEmpty. Operand 125654 states and 487554 transitions. [2022-04-18 20:22:42,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-04-18 20:22:42,286 INFO L491 BasicCegarLoop]: Found error trace [2022-04-18 20:22:42,286 INFO L499 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 20:22:42,303 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-04-18 20:22:42,487 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-18 20:22:42,488 INFO L403 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err3ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 50 more)] === [2022-04-18 20:22:42,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 20:22:42,488 INFO L85 PathProgramCache]: Analyzing trace with hash 347934905, now seen corresponding path program 2 times [2022-04-18 20:22:42,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-04-18 20:22:42,488 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1978691924] [2022-04-18 20:22:42,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 20:22:42,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 20:22:42,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 20:22:42,630 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-04-18 20:22:42,630 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-04-18 20:22:42,631 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1978691924] [2022-04-18 20:22:42,631 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1978691924] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 20:22:42,632 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 20:22:42,632 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-18 20:22:42,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967494405] [2022-04-18 20:22:42,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 20:22:42,633 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-04-18 20:22:42,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-04-18 20:22:42,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-04-18 20:22:42,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-04-18 20:22:42,634 INFO L87 Difference]: Start difference. First operand 125654 states and 487554 transitions. Second operand has 6 states, 5 states have (on average 3.6) internal successors, (18), 6 states have internal predecessors, (18), 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) [2022-04-18 20:22:44,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-18 20:22:44,968 INFO L93 Difference]: Finished difference Result 158918 states and 616782 transitions. [2022-04-18 20:22:44,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-04-18 20:22:44,969 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.6) internal successors, (18), 6 states have internal predecessors, (18), 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 20 [2022-04-18 20:22:44,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-18 20:22:45,780 INFO L225 Difference]: With dead ends: 158918 [2022-04-18 20:22:45,780 INFO L226 Difference]: Without dead ends: 158918 [2022-04-18 20:22:45,780 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-04-18 20:22:45,782 INFO L913 BasicCegarLoop]: 76 mSDtfsCounter, 132 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 638 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 708 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 638 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-04-18 20:22:45,782 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [132 Valid, 114 Invalid, 708 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 638 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-04-18 20:22:46,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158918 states.