./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/goblint-regression/28-race_reach_10-ptrmunge_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 35987657 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 ../sv-benchmarks/c/goblint-regression/28-race_reach_10-ptrmunge_racefree.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-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 ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 337bc30baab893db6c1e898eac989d238a0e57740b5469c94ed68dbaffc92f80 --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-21 08:50:46,398 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 08:50:46,400 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 08:50:46,433 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 08:50:46,433 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 08:50:46,435 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 08:50:46,437 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 08:50:46,439 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 08:50:46,441 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 08:50:46,444 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 08:50:46,445 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 08:50:46,447 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 08:50:46,447 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 08:50:46,448 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 08:50:46,449 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 08:50:46,453 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 08:50:46,454 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 08:50:46,455 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 08:50:46,457 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 08:50:46,465 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 08:50:46,466 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 08:50:46,467 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 08:50:46,468 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 08:50:46,469 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 08:50:46,470 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 08:50:46,475 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 08:50:46,475 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 08:50:46,475 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 08:50:46,476 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 08:50:46,476 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 08:50:46,477 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 08:50:46,477 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 08:50:46,479 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 08:50:46,479 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 08:50:46,480 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 08:50:46,481 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 08:50:46,481 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 08:50:46,481 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 08:50:46,481 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 08:50:46,482 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 08:50:46,482 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 08:50:46,483 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 08:50:46,489 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-21 08:50:46,514 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 08:50:46,514 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 08:50:46,514 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 08:50:46,514 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 08:50:46,515 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 08:50:46,515 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 08:50:46,516 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 08:50:46,516 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 08:50:46,516 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 08:50:46,516 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 08:50:46,516 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-21 08:50:46,516 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-21 08:50:46,517 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-21 08:50:46,517 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 08:50:46,517 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-21 08:50:46,517 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 08:50:46,517 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-21 08:50:46,517 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-21 08:50:46,518 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-21 08:50:46,518 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 08:50:46,518 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-21 08:50:46,518 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 08:50:46,518 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 08:50:46,518 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 08:50:46,518 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 08:50:46,519 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 08:50:46,519 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 08:50:46,519 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-21 08:50:46,519 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-21 08:50:46,519 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-21 08:50:46,519 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-21 08:50:46,520 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-21 08:50:46,520 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-21 08:50:46,520 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 337bc30baab893db6c1e898eac989d238a0e57740b5469c94ed68dbaffc92f80 [2022-07-21 08:50:46,751 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 08:50:46,779 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 08:50:46,781 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 08:50:46,782 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 08:50:46,782 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 08:50:46,783 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/goblint-regression/28-race_reach_10-ptrmunge_racefree.i [2022-07-21 08:50:46,826 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/69ff08cc5/ae8eb918a0074c0b83a41fb88d3af645/FLAGf43db151f [2022-07-21 08:50:47,243 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 08:50:47,244 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_10-ptrmunge_racefree.i [2022-07-21 08:50:47,256 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/69ff08cc5/ae8eb918a0074c0b83a41fb88d3af645/FLAGf43db151f [2022-07-21 08:50:47,270 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/69ff08cc5/ae8eb918a0074c0b83a41fb88d3af645 [2022-07-21 08:50:47,272 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 08:50:47,274 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 08:50:47,276 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 08:50:47,276 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 08:50:47,278 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 08:50:47,279 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 08:50:47" (1/1) ... [2022-07-21 08:50:47,280 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a41efc3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:50:47, skipping insertion in model container [2022-07-21 08:50:47,280 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 08:50:47" (1/1) ... [2022-07-21 08:50:47,286 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 08:50:47,321 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 08:50:47,610 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_10-ptrmunge_racefree.i[30176,30189] [2022-07-21 08:50:47,634 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 08:50:47,647 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 08:50:47,679 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_10-ptrmunge_racefree.i[30176,30189] [2022-07-21 08:50:47,685 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 08:50:47,713 INFO L208 MainTranslator]: Completed translation [2022-07-21 08:50:47,714 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:50:47 WrapperNode [2022-07-21 08:50:47,714 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-21 08:50:47,715 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-21 08:50:47,715 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-21 08:50:47,715 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-21 08:50:47,719 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:50:47" (1/1) ... [2022-07-21 08:50:47,741 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:50:47" (1/1) ... [2022-07-21 08:50:47,767 INFO L137 Inliner]: procedures = 172, calls = 52, calls flagged for inlining = 5, calls inlined = 6, statements flattened = 218 [2022-07-21 08:50:47,767 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-21 08:50:47,768 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-21 08:50:47,768 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-21 08:50:47,768 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-21 08:50:47,774 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:50:47" (1/1) ... [2022-07-21 08:50:47,774 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:50:47" (1/1) ... [2022-07-21 08:50:47,779 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:50:47" (1/1) ... [2022-07-21 08:50:47,780 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:50:47" (1/1) ... [2022-07-21 08:50:47,787 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:50:47" (1/1) ... [2022-07-21 08:50:47,797 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:50:47" (1/1) ... [2022-07-21 08:50:47,799 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:50:47" (1/1) ... [2022-07-21 08:50:47,801 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-21 08:50:47,802 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-21 08:50:47,802 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-21 08:50:47,802 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-21 08:50:47,803 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:50:47" (1/1) ... [2022-07-21 08:50:47,807 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 08:50:47,816 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 08:50:47,828 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) [2022-07-21 08:50:47,839 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 [2022-07-21 08:50:47,876 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-21 08:50:47,877 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2022-07-21 08:50:47,877 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2022-07-21 08:50:47,877 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-21 08:50:47,877 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-07-21 08:50:47,877 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-21 08:50:47,877 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-21 08:50:47,877 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2022-07-21 08:50:47,877 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2022-07-21 08:50:47,878 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-21 08:50:47,878 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-21 08:50:47,878 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-21 08:50:47,878 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-21 08:50:47,879 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-07-21 08:50:47,960 INFO L234 CfgBuilder]: Building ICFG [2022-07-21 08:50:47,961 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-21 08:50:48,251 INFO L275 CfgBuilder]: Performing block encoding [2022-07-21 08:50:48,258 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-21 08:50:48,258 INFO L299 CfgBuilder]: Removed 24 assume(true) statements. [2022-07-21 08:50:48,260 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 08:50:48 BoogieIcfgContainer [2022-07-21 08:50:48,260 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-21 08:50:48,261 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-21 08:50:48,261 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-21 08:50:48,263 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-21 08:50:48,263 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 08:50:47" (1/3) ... [2022-07-21 08:50:48,264 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23a9d7b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 08:50:48, skipping insertion in model container [2022-07-21 08:50:48,264 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:50:47" (2/3) ... [2022-07-21 08:50:48,264 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23a9d7b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 08:50:48, skipping insertion in model container [2022-07-21 08:50:48,264 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 08:50:48" (3/3) ... [2022-07-21 08:50:48,265 INFO L111 eAbstractionObserver]: Analyzing ICFG 28-race_reach_10-ptrmunge_racefree.i [2022-07-21 08:50:48,279 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-21 08:50:48,285 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-21 08:50:48,286 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-21 08:50:48,286 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-21 08:50:48,377 INFO L135 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-07-21 08:50:48,416 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 200 places, 227 transitions, 476 flow [2022-07-21 08:50:48,539 INFO L129 PetriNetUnfolder]: 58/398 cut-off events. [2022-07-21 08:50:48,539 INFO L130 PetriNetUnfolder]: For 8/13 co-relation queries the response was YES. [2022-07-21 08:50:48,548 INFO L84 FinitePrefix]: Finished finitePrefix Result has 418 conditions, 398 events. 58/398 cut-off events. For 8/13 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 1745 event pairs, 0 based on Foata normal form. 0/331 useless extension candidates. Maximal degree in co-relation 211. Up to 8 conditions per place. [2022-07-21 08:50:48,548 INFO L82 GeneralOperation]: Start removeDead. Operand has 200 places, 227 transitions, 476 flow [2022-07-21 08:50:48,556 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 200 places, 227 transitions, 476 flow [2022-07-21 08:50:48,562 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 08:50:48,566 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=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@3c650b42, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@463df52a [2022-07-21 08:50:48,567 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2022-07-21 08:50:48,577 INFO L129 PetriNetUnfolder]: 9/124 cut-off events. [2022-07-21 08:50:48,577 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-07-21 08:50:48,577 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:50:48,578 INFO L200 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:50:48,578 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-07-21 08:50:48,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:50:48,582 INFO L85 PathProgramCache]: Analyzing trace with hash -2017405666, now seen corresponding path program 1 times [2022-07-21 08:50:48,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:50:48,588 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1154570190] [2022-07-21 08:50:48,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:50:48,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:50:48,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-21 08:50:48,676 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-21 08:50:48,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-21 08:50:48,741 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-21 08:50:48,742 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-21 08:50:48,743 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 6 remaining) [2022-07-21 08:50:48,745 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 6 remaining) [2022-07-21 08:50:48,745 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 6 remaining) [2022-07-21 08:50:48,745 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 6 remaining) [2022-07-21 08:50:48,746 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 6 remaining) [2022-07-21 08:50:48,746 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining) [2022-07-21 08:50:48,746 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-21 08:50:48,746 INFO L356 BasicCegarLoop]: Path program histogram: [1] [2022-07-21 08:50:48,749 WARN L231 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-07-21 08:50:48,749 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-07-21 08:50:48,807 INFO L135 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2022-07-21 08:50:48,812 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 310 places, 361 transitions, 770 flow [2022-07-21 08:50:49,009 INFO L129 PetriNetUnfolder]: 197/1148 cut-off events. [2022-07-21 08:50:49,010 INFO L130 PetriNetUnfolder]: For 72/86 co-relation queries the response was YES. [2022-07-21 08:50:49,025 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1245 conditions, 1148 events. 197/1148 cut-off events. For 72/86 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 6979 event pairs, 1 based on Foata normal form. 0/956 useless extension candidates. Maximal degree in co-relation 711. Up to 32 conditions per place. [2022-07-21 08:50:49,025 INFO L82 GeneralOperation]: Start removeDead. Operand has 310 places, 361 transitions, 770 flow [2022-07-21 08:50:49,042 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 310 places, 361 transitions, 770 flow [2022-07-21 08:50:49,044 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 08:50:49,046 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=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@3c650b42, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@463df52a [2022-07-21 08:50:49,046 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2022-07-21 08:50:49,101 INFO L129 PetriNetUnfolder]: 30/292 cut-off events. [2022-07-21 08:50:49,101 INFO L130 PetriNetUnfolder]: For 7/10 co-relation queries the response was YES. [2022-07-21 08:50:49,101 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:50:49,101 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:50:49,102 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t1_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 5 more)] === [2022-07-21 08:50:49,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:50:49,102 INFO L85 PathProgramCache]: Analyzing trace with hash 1063024222, now seen corresponding path program 1 times [2022-07-21 08:50:49,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:50:49,103 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233187731] [2022-07-21 08:50:49,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:50:49,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:50:49,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:50:49,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:50:49,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:50:49,579 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233187731] [2022-07-21 08:50:49,579 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1233187731] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:50:49,580 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:50:49,580 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-21 08:50:49,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117153719] [2022-07-21 08:50:49,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:50:49,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-21 08:50:49,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:50:49,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-21 08:50:49,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2022-07-21 08:50:49,615 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 204 out of 361 [2022-07-21 08:50:49,622 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 310 places, 361 transitions, 770 flow. Second operand has 14 states, 14 states have (on average 207.0) internal successors, (2898), 14 states have internal predecessors, (2898), 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) [2022-07-21 08:50:49,622 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:50:49,623 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 204 of 361 [2022-07-21 08:50:49,624 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand