./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_82-list_racefree.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_82-list_racefree.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 6ac894f5c6207d1329786eb676509b79ca36f8c33f880cc59ffa30652ab92765 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-30 14:23:08,186 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 14:23:08,188 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 14:23:08,231 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 14:23:08,233 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 14:23:08,237 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 14:23:08,238 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 14:23:08,240 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 14:23:08,241 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 14:23:08,244 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 14:23:08,245 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 14:23:08,247 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 14:23:08,248 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 14:23:08,252 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 14:23:08,253 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 14:23:08,254 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 14:23:08,257 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 14:23:08,259 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 14:23:08,260 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 14:23:08,261 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 14:23:08,265 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 14:23:08,269 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 14:23:08,270 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 14:23:08,270 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 14:23:08,278 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 14:23:08,280 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 14:23:08,280 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 14:23:08,281 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 14:23:08,282 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 14:23:08,283 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 14:23:08,284 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 14:23:08,284 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 14:23:08,285 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 14:23:08,286 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 14:23:08,288 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 14:23:08,289 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 14:23:08,290 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 14:23:08,290 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 14:23:08,290 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 14:23:08,291 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 14:23:08,291 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 14:23:08,292 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-08-30 14:23:08,318 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 14:23:08,318 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 14:23:08,319 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 14:23:08,319 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 14:23:08,320 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 14:23:08,320 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 14:23:08,321 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 14:23:08,321 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 14:23:08,321 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 14:23:08,322 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 14:23:08,322 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 14:23:08,323 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 14:23:08,323 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 14:23:08,323 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 14:23:08,323 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 14:23:08,323 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 14:23:08,323 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 14:23:08,324 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 14:23:08,324 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-08-30 14:23:08,324 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 14:23:08,324 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 14:23:08,324 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 14:23:08,324 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 14:23:08,325 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 14:23:08,325 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 14:23:08,325 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 14:23:08,325 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 14:23:08,325 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 14:23:08,325 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 14:23:08,326 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 14:23:08,326 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 14:23:08,326 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 14:23:08,326 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 14:23:08,326 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 14:23:08,327 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 14:23:08,327 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 14:23:08,327 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 14:23:08,327 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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/UAutomizer-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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6ac894f5c6207d1329786eb676509b79ca36f8c33f880cc59ffa30652ab92765 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-30 14:23:08,598 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 14:23:08,614 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 14:23:08,616 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 14:23:08,618 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 14:23:08,618 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 14:23:08,619 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_82-list_racefree.i [2023-08-30 14:23:09,691 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 14:23:09,912 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 14:23:09,912 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_82-list_racefree.i [2023-08-30 14:23:09,938 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ee4e4006a/60831ecb928d4b1f862fb80889df6aee/FLAGb11ba8745 [2023-08-30 14:23:09,953 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ee4e4006a/60831ecb928d4b1f862fb80889df6aee [2023-08-30 14:23:09,956 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 14:23:09,958 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 14:23:09,958 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 14:23:09,958 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 14:23:09,961 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 14:23:09,962 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 02:23:09" (1/1) ... [2023-08-30 14:23:09,963 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20b5c1e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:23:09, skipping insertion in model container [2023-08-30 14:23:09,963 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 02:23:09" (1/1) ... [2023-08-30 14:23:09,967 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 14:23:10,007 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 14:23:10,363 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_82-list_racefree.i[47038,47051] [2023-08-30 14:23:10,405 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 14:23:10,417 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 14:23:10,449 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_82-list_racefree.i[47038,47051] [2023-08-30 14:23:10,475 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 14:23:10,535 INFO L208 MainTranslator]: Completed translation [2023-08-30 14:23:10,536 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:23:10 WrapperNode [2023-08-30 14:23:10,536 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 14:23:10,537 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 14:23:10,537 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 14:23:10,537 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 14:23:10,542 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:23:10" (1/1) ... [2023-08-30 14:23:10,569 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:23:10" (1/1) ... [2023-08-30 14:23:10,594 INFO L138 Inliner]: procedures = 278, calls = 61, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 220 [2023-08-30 14:23:10,597 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 14:23:10,598 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 14:23:10,598 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 14:23:10,598 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 14:23:10,604 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:23:10" (1/1) ... [2023-08-30 14:23:10,605 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:23:10" (1/1) ... [2023-08-30 14:23:10,619 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:23:10" (1/1) ... [2023-08-30 14:23:10,622 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:23:10" (1/1) ... [2023-08-30 14:23:10,628 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:23:10" (1/1) ... [2023-08-30 14:23:10,632 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:23:10" (1/1) ... [2023-08-30 14:23:10,633 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:23:10" (1/1) ... [2023-08-30 14:23:10,634 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:23:10" (1/1) ... [2023-08-30 14:23:10,637 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 14:23:10,638 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 14:23:10,638 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 14:23:10,638 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 14:23:10,638 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:23:10" (1/1) ... [2023-08-30 14:23:10,658 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 14:23:10,667 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:23:10,688 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-30 14:23:10,695 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-30 14:23:10,712 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 14:23:10,713 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-08-30 14:23:10,713 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2023-08-30 14:23:10,713 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2023-08-30 14:23:10,713 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 14:23:10,713 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 14:23:10,713 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2023-08-30 14:23:10,713 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2023-08-30 14:23:10,713 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 14:23:10,714 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-30 14:23:10,714 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-30 14:23:10,714 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 14:23:10,714 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-08-30 14:23:10,714 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 14:23:10,714 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 14:23:10,714 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 14:23:10,715 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-30 14:23:10,824 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 14:23:10,826 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 14:23:11,167 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 14:23:11,173 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 14:23:11,174 INFO L302 CfgBuilder]: Removed 15 assume(true) statements. [2023-08-30 14:23:11,175 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 02:23:11 BoogieIcfgContainer [2023-08-30 14:23:11,175 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 14:23:11,177 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 14:23:11,177 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 14:23:11,179 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 14:23:11,179 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 02:23:09" (1/3) ... [2023-08-30 14:23:11,179 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7dcb2940 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 02:23:11, skipping insertion in model container [2023-08-30 14:23:11,180 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:23:10" (2/3) ... [2023-08-30 14:23:11,180 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7dcb2940 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 02:23:11, skipping insertion in model container [2023-08-30 14:23:11,180 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 02:23:11" (3/3) ... [2023-08-30 14:23:11,181 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_82-list_racefree.i [2023-08-30 14:23:11,186 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 14:23:11,200 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 14:23:11,201 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2023-08-30 14:23:11,201 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 14:23:11,286 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-08-30 14:23:11,321 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 215 places, 233 transitions, 488 flow [2023-08-30 14:23:11,450 INFO L130 PetriNetUnfolder]: 52/452 cut-off events. [2023-08-30 14:23:11,451 INFO L131 PetriNetUnfolder]: For 8/14 co-relation queries the response was YES. [2023-08-30 14:23:11,457 INFO L83 FinitePrefix]: Finished finitePrefix Result has 472 conditions, 452 events. 52/452 cut-off events. For 8/14 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1879 event pairs, 0 based on Foata normal form. 0/368 useless extension candidates. Maximal degree in co-relation 225. Up to 8 conditions per place. [2023-08-30 14:23:11,457 INFO L82 GeneralOperation]: Start removeDead. Operand has 215 places, 233 transitions, 488 flow [2023-08-30 14:23:11,461 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 215 places, 233 transitions, 488 flow [2023-08-30 14:23:11,463 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 14:23:11,469 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 215 places, 233 transitions, 488 flow [2023-08-30 14:23:11,470 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 215 places, 233 transitions, 488 flow [2023-08-30 14:23:11,471 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 215 places, 233 transitions, 488 flow [2023-08-30 14:23:11,546 INFO L130 PetriNetUnfolder]: 52/452 cut-off events. [2023-08-30 14:23:11,546 INFO L131 PetriNetUnfolder]: For 8/14 co-relation queries the response was YES. [2023-08-30 14:23:11,551 INFO L83 FinitePrefix]: Finished finitePrefix Result has 472 conditions, 452 events. 52/452 cut-off events. For 8/14 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1879 event pairs, 0 based on Foata normal form. 0/368 useless extension candidates. Maximal degree in co-relation 225. Up to 8 conditions per place. [2023-08-30 14:23:11,559 INFO L119 LiptonReduction]: Number of co-enabled transitions 17280 [2023-08-30 14:23:16,957 INFO L134 LiptonReduction]: Checked pairs total: 33257 [2023-08-30 14:23:16,957 INFO L136 LiptonReduction]: Total number of compositions: 197 [2023-08-30 14:23:16,975 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 14:23:16,981 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@75b3921a, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 14:23:16,982 INFO L358 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2023-08-30 14:23:16,986 INFO L130 PetriNetUnfolder]: 0/9 cut-off events. [2023-08-30 14:23:16,987 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 14:23:16,987 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:23:16,988 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-30 14:23:16,988 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-30 14:23:16,992 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:23:16,992 INFO L85 PathProgramCache]: Analyzing trace with hash 27956195, now seen corresponding path program 1 times [2023-08-30 14:23:16,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:23:16,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249566066] [2023-08-30 14:23:16,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:23:17,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:23:17,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:23:17,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 14:23:17,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:23:17,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1249566066] [2023-08-30 14:23:17,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1249566066] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:23:17,280 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:23:17,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 14:23:17,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787751350] [2023-08-30 14:23:17,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:23:17,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:23:17,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:23:17,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:23:17,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:23:17,323 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 206 out of 430 [2023-08-30 14:23:17,328 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 76 transitions, 174 flow. Second operand has 3 states, 3 states have (on average 207.33333333333334) internal successors, (622), 3 states have internal predecessors, (622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:23:17,328 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:23:17,328 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 206 of 430 [2023-08-30 14:23:17,329 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:23:17,892 INFO L130 PetriNetUnfolder]: 3979/6568 cut-off events. [2023-08-30 14:23:17,893 INFO L131 PetriNetUnfolder]: For 146/146 co-relation queries the response was YES. [2023-08-30 14:23:17,898 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12899 conditions, 6568 events. 3979/6568 cut-off events. For 146/146 co-relation queries the response was YES. Maximal size of possible extension queue 211. Compared 38728 event pairs, 1932 based on Foata normal form. 300/5183 useless extension candidates. Maximal degree in co-relation 11651. Up to 6220 conditions per place. [2023-08-30 14:23:17,916 INFO L137 encePairwiseOnDemand]: 414/430 looper letters, 61 selfloop transitions, 2 changer transitions 0/71 dead transitions. [2023-08-30 14:23:17,916 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 71 transitions, 290 flow [2023-08-30 14:23:17,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:23:17,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:23:17,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 695 transitions. [2023-08-30 14:23:17,930 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5387596899224806 [2023-08-30 14:23:17,930 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 695 transitions. [2023-08-30 14:23:17,931 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 695 transitions. [2023-08-30 14:23:17,933 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:23:17,934 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 695 transitions. [2023-08-30 14:23:17,938 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 231.66666666666666) internal successors, (695), 3 states have internal predecessors, (695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:23:17,943 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 430.0) internal successors, (1720), 4 states have internal predecessors, (1720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:23:17,944 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 430.0) internal successors, (1720), 4 states have internal predecessors, (1720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:23:17,945 INFO L175 Difference]: Start difference. First operand has 64 places, 76 transitions, 174 flow. Second operand 3 states and 695 transitions. [2023-08-30 14:23:17,945 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 71 transitions, 290 flow [2023-08-30 14:23:17,949 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 71 transitions, 290 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 14:23:17,951 INFO L231 Difference]: Finished difference. Result has 65 places, 63 transitions, 156 flow [2023-08-30 14:23:17,952 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=430, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=156, PETRI_PLACES=65, PETRI_TRANSITIONS=63} [2023-08-30 14:23:17,954 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, 1 predicate places. [2023-08-30 14:23:17,955 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 63 transitions, 156 flow [2023-08-30 14:23:17,956 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 207.33333333333334) internal successors, (622), 3 states have internal predecessors, (622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:23:17,956 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:23:17,957 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-30 14:23:17,958 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 14:23:17,958 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-30 14:23:17,964 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:23:17,964 INFO L85 PathProgramCache]: Analyzing trace with hash 1096168217, now seen corresponding path program 1 times [2023-08-30 14:23:17,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:23:17,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566439621] [2023-08-30 14:23:17,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:23:17,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:23:17,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 14:23:18,003 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-30 14:23:18,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 14:23:18,033 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-30 14:23:18,034 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-30 14:23:18,035 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (17 of 18 remaining) [2023-08-30 14:23:18,036 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 18 remaining) [2023-08-30 14:23:18,036 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 18 remaining) [2023-08-30 14:23:18,037 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 18 remaining) [2023-08-30 14:23:18,037 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 18 remaining) [2023-08-30 14:23:18,037 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 18 remaining) [2023-08-30 14:23:18,037 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 18 remaining) [2023-08-30 14:23:18,037 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 18 remaining) [2023-08-30 14:23:18,038 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 18 remaining) [2023-08-30 14:23:18,038 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 18 remaining) [2023-08-30 14:23:18,038 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 18 remaining) [2023-08-30 14:23:18,039 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 18 remaining) [2023-08-30 14:23:18,039 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 18 remaining) [2023-08-30 14:23:18,039 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 18 remaining) [2023-08-30 14:23:18,039 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 18 remaining) [2023-08-30 14:23:18,039 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 18 remaining) [2023-08-30 14:23:18,042 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 18 remaining) [2023-08-30 14:23:18,042 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 18 remaining) [2023-08-30 14:23:18,042 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 14:23:18,042 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-08-30 14:23:18,045 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-30 14:23:18,045 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-30 14:23:18,126 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2023-08-30 14:23:18,129 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 324 places, 357 transitions, 762 flow [2023-08-30 14:23:18,297 INFO L130 PetriNetUnfolder]: 191/1389 cut-off events. [2023-08-30 14:23:18,297 INFO L131 PetriNetUnfolder]: For 72/88 co-relation queries the response was YES. [2023-08-30 14:23:18,311 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1486 conditions, 1389 events. 191/1389 cut-off events. For 72/88 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 9012 event pairs, 2 based on Foata normal form. 0/1111 useless extension candidates. Maximal degree in co-relation 859. Up to 32 conditions per place. [2023-08-30 14:23:18,312 INFO L82 GeneralOperation]: Start removeDead. Operand has 324 places, 357 transitions, 762 flow [2023-08-30 14:23:18,323 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 324 places, 357 transitions, 762 flow [2023-08-30 14:23:18,323 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 14:23:18,324 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 324 places, 357 transitions, 762 flow [2023-08-30 14:23:18,324 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 324 places, 357 transitions, 762 flow [2023-08-30 14:23:18,324 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 324 places, 357 transitions, 762 flow [2023-08-30 14:23:18,475 INFO L130 PetriNetUnfolder]: 191/1389 cut-off events. [2023-08-30 14:23:18,475 INFO L131 PetriNetUnfolder]: For 72/88 co-relation queries the response was YES. [2023-08-30 14:23:18,490 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1486 conditions, 1389 events. 191/1389 cut-off events. For 72/88 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 9012 event pairs, 2 based on Foata normal form. 0/1111 useless extension candidates. Maximal degree in co-relation 859. Up to 32 conditions per place. [2023-08-30 14:23:18,531 INFO L119 LiptonReduction]: Number of co-enabled transitions 64624 [2023-08-30 14:23:25,336 INFO L134 LiptonReduction]: Checked pairs total: 140567 [2023-08-30 14:23:25,337 INFO L136 LiptonReduction]: Total number of compositions: 282 [2023-08-30 14:23:25,338 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 14:23:25,339 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@75b3921a, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 14:23:25,339 INFO L358 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2023-08-30 14:23:25,341 INFO L130 PetriNetUnfolder]: 0/15 cut-off events. [2023-08-30 14:23:25,341 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 14:23:25,341 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:23:25,341 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 14:23:25,341 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-30 14:23:25,341 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:23:25,341 INFO L85 PathProgramCache]: Analyzing trace with hash 1592554280, now seen corresponding path program 1 times [2023-08-30 14:23:25,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:23:25,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377410019] [2023-08-30 14:23:25,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:23:25,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:23:25,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:23:25,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 14:23:25,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:23:25,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1377410019] [2023-08-30 14:23:25,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1377410019] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:23:25,384 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:23:25,384 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 14:23:25,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363408446] [2023-08-30 14:23:25,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:23:25,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:23:25,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:23:25,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:23:25,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:23:25,392 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 311 out of 639 [2023-08-30 14:23:25,393 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 129 transitions, 306 flow. Second operand has 3 states, 3 states have (on average 312.3333333333333) internal successors, (937), 3 states have internal predecessors, (937), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:23:25,393 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:23:25,393 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 311 of 639 [2023-08-30 14:23:25,393 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand