./Ultimate.py --spec /storage/repos/ultimate/trunk/examples/svcomp/properties/no-data-race.prp --file /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-word-subst.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/chl-word-subst.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 98c397d7a260fe673f9e4655b5dca942c114f9b11115010a8eef60e068615ab1 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-efd9311-m [2022-04-18 20:18:07,098 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-04-18 20:18:07,100 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-04-18 20:18:07,135 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-04-18 20:18:07,136 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-04-18 20:18:07,137 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-04-18 20:18:07,138 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-04-18 20:18:07,140 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-04-18 20:18:07,141 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-04-18 20:18:07,145 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-04-18 20:18:07,145 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-04-18 20:18:07,147 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-04-18 20:18:07,147 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-04-18 20:18:07,148 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-04-18 20:18:07,149 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-04-18 20:18:07,151 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-04-18 20:18:07,152 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-04-18 20:18:07,153 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-04-18 20:18:07,154 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-04-18 20:18:07,159 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-04-18 20:18:07,160 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-04-18 20:18:07,161 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-04-18 20:18:07,161 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-04-18 20:18:07,162 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-04-18 20:18:07,163 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-04-18 20:18:07,167 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-04-18 20:18:07,168 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-04-18 20:18:07,168 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-04-18 20:18:07,169 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-04-18 20:18:07,169 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-04-18 20:18:07,170 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-04-18 20:18:07,170 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-04-18 20:18:07,171 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-04-18 20:18:07,172 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-04-18 20:18:07,172 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-04-18 20:18:07,173 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-04-18 20:18:07,173 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-04-18 20:18:07,174 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-04-18 20:18:07,174 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-04-18 20:18:07,174 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-04-18 20:18:07,174 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-04-18 20:18:07,176 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-04-18 20:18:07,176 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/config/svcomp-DataRace-32bit-Taipan_Default.epf [2022-04-18 20:18:07,196 INFO L113 SettingsManager]: Loading preferences was successful [2022-04-18 20:18:07,197 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-04-18 20:18:07,197 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-04-18 20:18:07,197 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-04-18 20:18:07,198 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-04-18 20:18:07,198 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-04-18 20:18:07,198 INFO L138 SettingsManager]: * User list type=DISABLED [2022-04-18 20:18:07,198 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-04-18 20:18:07,198 INFO L138 SettingsManager]: * Explicit value domain=true [2022-04-18 20:18:07,199 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-04-18 20:18:07,199 INFO L138 SettingsManager]: * Octagon Domain=false [2022-04-18 20:18:07,199 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-04-18 20:18:07,199 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-04-18 20:18:07,199 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-04-18 20:18:07,199 INFO L138 SettingsManager]: * Interval Domain=false [2022-04-18 20:18:07,200 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-04-18 20:18:07,200 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-04-18 20:18:07,200 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-04-18 20:18:07,201 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-04-18 20:18:07,201 INFO L138 SettingsManager]: * sizeof long=4 [2022-04-18 20:18:07,201 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-04-18 20:18:07,201 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-04-18 20:18:07,201 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-04-18 20:18:07,201 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-04-18 20:18:07,201 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-04-18 20:18:07,202 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-04-18 20:18:07,202 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-04-18 20:18:07,202 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-04-18 20:18:07,202 INFO L138 SettingsManager]: * sizeof long double=12 [2022-04-18 20:18:07,202 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-04-18 20:18:07,202 INFO L138 SettingsManager]: * Use constant arrays=true [2022-04-18 20:18:07,202 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-04-18 20:18:07,203 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-04-18 20:18:07,203 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-04-18 20:18:07,203 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-18 20:18:07,203 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-04-18 20:18:07,203 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-04-18 20:18:07,203 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-04-18 20:18:07,203 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-04-18 20:18:07,204 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-04-18 20:18:07,204 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-04-18 20:18:07,204 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-04-18 20:18:07,204 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-04-18 20:18:07,204 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UTaipan-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 98c397d7a260fe673f9e4655b5dca942c114f9b11115010a8eef60e068615ab1 [2022-04-18 20:18:07,379 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-04-18 20:18:07,400 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-04-18 20:18:07,402 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-04-18 20:18:07,402 INFO L271 PluginConnector]: Initializing CDTParser... [2022-04-18 20:18:07,407 INFO L275 PluginConnector]: CDTParser initialized [2022-04-18 20:18:07,408 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-word-subst.wvr.c [2022-04-18 20:18:07,468 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/7edbfb591/d54115a678a2483c9196e441c944e574/FLAG3fda434f9 [2022-04-18 20:18:07,839 INFO L306 CDTParser]: Found 1 translation units. [2022-04-18 20:18:07,839 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-word-subst.wvr.c [2022-04-18 20:18:07,844 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/7edbfb591/d54115a678a2483c9196e441c944e574/FLAG3fda434f9 [2022-04-18 20:18:07,852 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/7edbfb591/d54115a678a2483c9196e441c944e574 [2022-04-18 20:18:07,854 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-04-18 20:18:07,855 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-04-18 20:18:07,856 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-04-18 20:18:07,856 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-04-18 20:18:07,858 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-04-18 20:18:07,859 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 08:18:07" (1/1) ... [2022-04-18 20:18:07,859 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35597d33 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 08:18:07, skipping insertion in model container [2022-04-18 20:18:07,859 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 08:18:07" (1/1) ... [2022-04-18 20:18:07,864 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-04-18 20:18:07,877 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-04-18 20:18:08,061 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/chl-word-subst.wvr.c[3345,3358] [2022-04-18 20:18:08,066 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-18 20:18:08,070 INFO L203 MainTranslator]: Completed pre-run [2022-04-18 20:18:08,104 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/chl-word-subst.wvr.c[3345,3358] [2022-04-18 20:18:08,107 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-18 20:18:08,116 INFO L208 MainTranslator]: Completed translation [2022-04-18 20:18:08,116 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 08:18:08 WrapperNode [2022-04-18 20:18:08,116 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-04-18 20:18:08,117 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-04-18 20:18:08,117 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-04-18 20:18:08,117 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-04-18 20:18:08,122 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 08:18:08" (1/1) ... [2022-04-18 20:18:08,132 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 08:18:08" (1/1) ... [2022-04-18 20:18:08,154 INFO L137 Inliner]: procedures = 25, calls = 45, calls flagged for inlining = 9, calls inlined = 13, statements flattened = 268 [2022-04-18 20:18:08,154 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-04-18 20:18:08,155 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-04-18 20:18:08,155 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-04-18 20:18:08,155 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-04-18 20:18:08,167 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 08:18:08" (1/1) ... [2022-04-18 20:18:08,167 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 08:18:08" (1/1) ... [2022-04-18 20:18:08,172 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 08:18:08" (1/1) ... [2022-04-18 20:18:08,172 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 08:18:08" (1/1) ... [2022-04-18 20:18:08,189 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 08:18:08" (1/1) ... [2022-04-18 20:18:08,194 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 08:18:08" (1/1) ... [2022-04-18 20:18:08,205 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 08:18:08" (1/1) ... [2022-04-18 20:18:08,208 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-04-18 20:18:08,208 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-04-18 20:18:08,209 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-04-18 20:18:08,219 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-04-18 20:18:08,220 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 08:18:08" (1/1) ... [2022-04-18 20:18:08,229 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-18 20:18:08,240 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 [2022-04-18 20:18:08,253 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 20:18:08,274 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 20:18:08,291 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-04-18 20:18:08,292 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-04-18 20:18:08,292 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-04-18 20:18:08,292 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-04-18 20:18:08,292 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-04-18 20:18:08,292 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-04-18 20:18:08,292 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-04-18 20:18:08,292 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-04-18 20:18:08,293 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-04-18 20:18:08,293 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-04-18 20:18:08,293 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-04-18 20:18:08,293 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-04-18 20:18:08,293 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-04-18 20:18:08,293 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-04-18 20:18:08,293 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-04-18 20:18:08,295 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 20:18:08,387 INFO L234 CfgBuilder]: Building ICFG [2022-04-18 20:18:08,389 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-04-18 20:18:08,924 INFO L275 CfgBuilder]: Performing block encoding [2022-04-18 20:18:08,939 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-04-18 20:18:08,939 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2022-04-18 20:18:08,941 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 08:18:08 BoogieIcfgContainer [2022-04-18 20:18:08,942 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-04-18 20:18:08,943 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-04-18 20:18:08,943 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-04-18 20:18:08,945 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-04-18 20:18:08,946 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 08:18:07" (1/3) ... [2022-04-18 20:18:08,947 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61a0d79f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 08:18:08, skipping insertion in model container [2022-04-18 20:18:08,947 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 08:18:08" (2/3) ... [2022-04-18 20:18:08,947 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61a0d79f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 08:18:08, skipping insertion in model container [2022-04-18 20:18:08,948 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 08:18:08" (3/3) ... [2022-04-18 20:18:08,949 INFO L111 eAbstractionObserver]: Analyzing ICFG chl-word-subst.wvr.c [2022-04-18 20:18:08,953 WARN L147 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-04-18 20:18:08,953 INFO L202 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-04-18 20:18:08,953 INFO L161 ceAbstractionStarter]: Applying trace abstraction to program that has 80 error locations. [2022-04-18 20:18:08,953 INFO L504 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-04-18 20:18:09,087 INFO L135 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-04-18 20:18:09,127 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-18 20:18:09,133 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 20:18:09,134 INFO L341 AbstractCegarLoop]: Starting to check reachability of 140 error locations. [2022-04-18 20:18:09,156 INFO L116 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-04-18 20:18:09,166 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 669 places, 698 transitions, 1420 flow [2022-04-18 20:18:09,167 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 669 places, 698 transitions, 1420 flow [2022-04-18 20:18:09,168 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 669 places, 698 transitions, 1420 flow [2022-04-18 20:18:09,357 INFO L129 PetriNetUnfolder]: 39/695 cut-off events. [2022-04-18 20:18:09,358 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-04-18 20:18:09,369 INFO L84 FinitePrefix]: Finished finitePrefix Result has 708 conditions, 695 events. 39/695 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1905 event pairs, 0 based on Foata normal form. 0/576 useless extension candidates. Maximal degree in co-relation 501. Up to 3 conditions per place. [2022-04-18 20:18:09,402 INFO L116 LiptonReduction]: Number of co-enabled transitions 105270 [2022-04-18 20:18:28,557 INFO L131 LiptonReduction]: Checked pairs total: 1144997 [2022-04-18 20:18:28,557 INFO L133 LiptonReduction]: Total number of compositions: 932 [2022-04-18 20:18:28,563 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 225 places, 236 transitions, 496 flow [2022-04-18 20:18:59,454 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 1168662 states, 1152223 states have (on average 4.167976164336244) internal successors, (4802438), 1168661 states have internal predecessors, (4802438), 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 20:19:01,818 INFO L276 IsEmpty]: Start isEmpty. Operand has 1168662 states, 1152223 states have (on average 4.167976164336244) internal successors, (4802438), 1168661 states have internal predecessors, (4802438), 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 20:19:01,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2 [2022-04-18 20:19:01,821 INFO L491 BasicCegarLoop]: Found error trace [2022-04-18 20:19:01,821 INFO L499 BasicCegarLoop]: trace histogram [1] [2022-04-18 20:19:01,822 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err16ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE (and 136 more)] === [2022-04-18 20:19:01,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 20:19:01,827 INFO L85 PathProgramCache]: Analyzing trace with hash 2785, now seen corresponding path program 1 times [2022-04-18 20:19:01,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-04-18 20:19:01,833 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782695713] [2022-04-18 20:19:01,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 20:19:01,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 20:19:01,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 20:19:01,899 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 20:19:01,899 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-04-18 20:19:01,900 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [782695713] [2022-04-18 20:19:01,900 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [782695713] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 20:19:01,900 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 20:19:01,900 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-04-18 20:19:01,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66731198] [2022-04-18 20:19:01,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 20:19:01,904 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-04-18 20:19:01,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-04-18 20:19:01,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-04-18 20:19:01,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-04-18 20:19:04,299 INFO L87 Difference]: Start difference. First operand has 1168662 states, 1152223 states have (on average 4.167976164336244) internal successors, (4802438), 1168661 states have internal predecessors, (4802438), 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)