./Ultimate.py --spec /storage/repos/ultimate/trunk/examples/svcomp/properties/no-data-race.prp --file /storage/repos/ultimate/trunk/examples/svcomp/pthread-lit/fkp2014.i --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/pthread-lit/fkp2014.i -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 f24d9db33c7d5aecb89ac12017849974773f5d17a3292112bf25190c4dfae9f0 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-efd9311-m [2022-04-18 19:21:05,646 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-04-18 19:21:05,648 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-04-18 19:21:05,693 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-04-18 19:21:05,693 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-04-18 19:21:05,695 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-04-18 19:21:05,696 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-04-18 19:21:05,698 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-04-18 19:21:05,700 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-04-18 19:21:05,704 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-04-18 19:21:05,705 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-04-18 19:21:05,707 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-04-18 19:21:05,707 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-04-18 19:21:05,709 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-04-18 19:21:05,710 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-04-18 19:21:05,713 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-04-18 19:21:05,714 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-04-18 19:21:05,715 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-04-18 19:21:05,716 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-04-18 19:21:05,721 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-04-18 19:21:05,723 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-04-18 19:21:05,724 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-04-18 19:21:05,725 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-04-18 19:21:05,725 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-04-18 19:21:05,727 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-04-18 19:21:05,732 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-04-18 19:21:05,732 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-04-18 19:21:05,733 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-04-18 19:21:05,733 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-04-18 19:21:05,734 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-04-18 19:21:05,734 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-04-18 19:21:05,734 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-04-18 19:21:05,735 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-04-18 19:21:05,735 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-04-18 19:21:05,736 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-04-18 19:21:05,736 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-04-18 19:21:05,736 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-04-18 19:21:05,737 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-04-18 19:21:05,737 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-04-18 19:21:05,737 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-04-18 19:21:05,737 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-04-18 19:21:05,739 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-04-18 19:21:05,740 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/config/svcomp-DataRace-32bit-Taipan_Default.epf [2022-04-18 19:21:05,768 INFO L113 SettingsManager]: Loading preferences was successful [2022-04-18 19:21:05,768 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-04-18 19:21:05,768 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-04-18 19:21:05,769 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-04-18 19:21:05,769 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-04-18 19:21:05,769 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-04-18 19:21:05,770 INFO L138 SettingsManager]: * User list type=DISABLED [2022-04-18 19:21:05,770 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-04-18 19:21:05,770 INFO L138 SettingsManager]: * Explicit value domain=true [2022-04-18 19:21:05,771 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-04-18 19:21:05,771 INFO L138 SettingsManager]: * Octagon Domain=false [2022-04-18 19:21:05,771 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-04-18 19:21:05,771 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-04-18 19:21:05,771 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-04-18 19:21:05,772 INFO L138 SettingsManager]: * Interval Domain=false [2022-04-18 19:21:05,772 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-04-18 19:21:05,773 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-04-18 19:21:05,773 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-04-18 19:21:05,774 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-04-18 19:21:05,775 INFO L138 SettingsManager]: * sizeof long=4 [2022-04-18 19:21:05,775 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-04-18 19:21:05,775 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-04-18 19:21:05,775 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-04-18 19:21:05,775 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-04-18 19:21:05,775 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-04-18 19:21:05,776 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-04-18 19:21:05,776 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-04-18 19:21:05,776 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-04-18 19:21:05,776 INFO L138 SettingsManager]: * sizeof long double=12 [2022-04-18 19:21:05,776 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-04-18 19:21:05,777 INFO L138 SettingsManager]: * Use constant arrays=true [2022-04-18 19:21:05,777 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-04-18 19:21:05,777 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-04-18 19:21:05,777 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-04-18 19:21:05,777 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-18 19:21:05,778 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-04-18 19:21:05,778 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-04-18 19:21:05,778 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-04-18 19:21:05,778 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-04-18 19:21:05,778 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-04-18 19:21:05,778 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-04-18 19:21:05,779 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-04-18 19:21:05,779 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-04-18 19:21:05,779 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UTaipan-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f24d9db33c7d5aecb89ac12017849974773f5d17a3292112bf25190c4dfae9f0 [2022-04-18 19:21:06,007 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-04-18 19:21:06,028 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-04-18 19:21:06,031 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-04-18 19:21:06,032 INFO L271 PluginConnector]: Initializing CDTParser... [2022-04-18 19:21:06,032 INFO L275 PluginConnector]: CDTParser initialized [2022-04-18 19:21:06,033 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/trunk/examples/svcomp/pthread-lit/fkp2014.i [2022-04-18 19:21:06,130 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/d47299865/db85018d1f404c2baf5a31b5a28dd5fa/FLAGfd275efca [2022-04-18 19:21:06,554 INFO L306 CDTParser]: Found 1 translation units. [2022-04-18 19:21:06,559 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-lit/fkp2014.i [2022-04-18 19:21:06,573 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/d47299865/db85018d1f404c2baf5a31b5a28dd5fa/FLAGfd275efca [2022-04-18 19:21:07,059 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/d47299865/db85018d1f404c2baf5a31b5a28dd5fa [2022-04-18 19:21:07,061 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-04-18 19:21:07,063 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-04-18 19:21:07,064 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-04-18 19:21:07,064 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-04-18 19:21:07,067 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-04-18 19:21:07,067 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 07:21:07" (1/1) ... [2022-04-18 19:21:07,068 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@34d58aaf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:21:07, skipping insertion in model container [2022-04-18 19:21:07,068 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 07:21:07" (1/1) ... [2022-04-18 19:21:07,074 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-04-18 19:21:07,106 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-04-18 19:21:07,372 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-lit/fkp2014.i[30003,30016] [2022-04-18 19:21:07,389 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-18 19:21:07,396 INFO L203 MainTranslator]: Completed pre-run [2022-04-18 19:21:07,432 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-lit/fkp2014.i[30003,30016] [2022-04-18 19:21:07,436 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-18 19:21:07,462 INFO L208 MainTranslator]: Completed translation [2022-04-18 19:21:07,462 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:21:07 WrapperNode [2022-04-18 19:21:07,463 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-04-18 19:21:07,464 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-04-18 19:21:07,464 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-04-18 19:21:07,464 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-04-18 19:21:07,471 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:21:07" (1/1) ... [2022-04-18 19:21:07,486 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:21:07" (1/1) ... [2022-04-18 19:21:07,503 INFO L137 Inliner]: procedures = 173, calls = 19, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 84 [2022-04-18 19:21:07,504 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-04-18 19:21:07,504 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-04-18 19:21:07,505 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-04-18 19:21:07,505 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-04-18 19:21:07,511 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:21:07" (1/1) ... [2022-04-18 19:21:07,511 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:21:07" (1/1) ... [2022-04-18 19:21:07,513 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:21:07" (1/1) ... [2022-04-18 19:21:07,514 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:21:07" (1/1) ... [2022-04-18 19:21:07,520 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:21:07" (1/1) ... [2022-04-18 19:21:07,523 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:21:07" (1/1) ... [2022-04-18 19:21:07,525 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:21:07" (1/1) ... [2022-04-18 19:21:07,527 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-04-18 19:21:07,528 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-04-18 19:21:07,529 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-04-18 19:21:07,529 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-04-18 19:21:07,535 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:21:07" (1/1) ... [2022-04-18 19:21:07,545 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-18 19:21:07,553 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 [2022-04-18 19:21:07,562 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 19:21:07,565 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 19:21:07,598 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-04-18 19:21:07,598 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-04-18 19:21:07,598 INFO L130 BoogieDeclarations]: Found specification of procedure thr [2022-04-18 19:21:07,598 INFO L138 BoogieDeclarations]: Found implementation of procedure thr [2022-04-18 19:21:07,598 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-04-18 19:21:07,598 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-04-18 19:21:07,598 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-04-18 19:21:07,599 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-04-18 19:21:07,599 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-04-18 19:21:07,599 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-04-18 19:21:07,599 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-04-18 19:21:07,600 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 19:21:07,679 INFO L234 CfgBuilder]: Building ICFG [2022-04-18 19:21:07,680 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-04-18 19:21:07,878 INFO L275 CfgBuilder]: Performing block encoding [2022-04-18 19:21:07,918 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-04-18 19:21:07,919 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-04-18 19:21:07,921 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 07:21:07 BoogieIcfgContainer [2022-04-18 19:21:07,921 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-04-18 19:21:07,923 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-04-18 19:21:07,923 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-04-18 19:21:07,926 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-04-18 19:21:07,927 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 07:21:07" (1/3) ... [2022-04-18 19:21:07,927 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f38c10c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 07:21:07, skipping insertion in model container [2022-04-18 19:21:07,927 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:21:07" (2/3) ... [2022-04-18 19:21:07,928 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f38c10c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 07:21:07, skipping insertion in model container [2022-04-18 19:21:07,928 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 07:21:07" (3/3) ... [2022-04-18 19:21:07,929 INFO L111 eAbstractionObserver]: Analyzing ICFG fkp2014.i [2022-04-18 19:21:07,934 WARN L147 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-04-18 19:21:07,934 INFO L202 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-04-18 19:21:07,934 INFO L161 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2022-04-18 19:21:07,934 INFO L504 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-04-18 19:21:07,994 INFO L135 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-04-18 19:21:08,054 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-18 19:21:08,063 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 19:21:08,064 INFO L341 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2022-04-18 19:21:08,078 INFO L116 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-04-18 19:21:08,093 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 84 places, 84 transitions, 173 flow [2022-04-18 19:21:08,098 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 84 places, 84 transitions, 173 flow [2022-04-18 19:21:08,100 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 84 places, 84 transitions, 173 flow [2022-04-18 19:21:08,159 INFO L129 PetriNetUnfolder]: 4/96 cut-off events. [2022-04-18 19:21:08,160 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-04-18 19:21:08,164 INFO L84 FinitePrefix]: Finished finitePrefix Result has 101 conditions, 96 events. 4/96 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 93 event pairs, 0 based on Foata normal form. 0/83 useless extension candidates. Maximal degree in co-relation 47. Up to 4 conditions per place. [2022-04-18 19:21:08,167 INFO L116 LiptonReduction]: Number of co-enabled transitions 1080 [2022-04-18 19:21:10,030 INFO L131 LiptonReduction]: Checked pairs total: 1020 [2022-04-18 19:21:10,030 INFO L133 LiptonReduction]: Total number of compositions: 101 [2022-04-18 19:21:10,050 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 17 places, 14 transitions, 33 flow [2022-04-18 19:21:10,064 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 43 states, 29 states have (on average 2.3793103448275863) internal successors, (69), 42 states have internal predecessors, (69), 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 19:21:10,066 INFO L276 IsEmpty]: Start isEmpty. Operand has 43 states, 29 states have (on average 2.3793103448275863) internal successors, (69), 42 states have internal predecessors, (69), 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 19:21:10,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2 [2022-04-18 19:21:10,069 INFO L491 BasicCegarLoop]: Found error trace [2022-04-18 19:21:10,070 INFO L499 BasicCegarLoop]: trace histogram [1] [2022-04-18 19:21:10,070 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thrErr0ASSERT_VIOLATIONDATA_RACE (and 11 more)] === [2022-04-18 19:21:10,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 19:21:10,075 INFO L85 PathProgramCache]: Analyzing trace with hash 378, now seen corresponding path program 1 times [2022-04-18 19:21:10,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-04-18 19:21:10,083 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017108971] [2022-04-18 19:21:10,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 19:21:10,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 19:21:10,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 19:21:10,171 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 19:21:10,172 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-04-18 19:21:10,172 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017108971] [2022-04-18 19:21:10,173 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1017108971] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 19:21:10,173 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 19:21:10,173 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-04-18 19:21:10,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108611526] [2022-04-18 19:21:10,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 19:21:10,178 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-04-18 19:21:10,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-04-18 19:21:10,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-04-18 19:21:10,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-04-18 19:21:10,199 INFO L87 Difference]: Start difference. First operand has 43 states, 29 states have (on average 2.3793103448275863) internal successors, (69), 42 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 19:21:10,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-18 19:21:10,222 INFO L93 Difference]: Finished difference Result 12 states and 14 transitions. [2022-04-18 19:21:10,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-04-18 19:21:10,224 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1 [2022-04-18 19:21:10,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-18 19:21:10,229 INFO L225 Difference]: With dead ends: 12 [2022-04-18 19:21:10,230 INFO L226 Difference]: Without dead ends: 11 [2022-04-18 19:21:10,231 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 0 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-04-18 19:21:10,233 INFO L913 BasicCegarLoop]: 1 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-18 19:21:10,234 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 1 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-18 19:21:10,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2022-04-18 19:21:10,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2022-04-18 19:21:10,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 1.3) internal successors, (13), 10 states have internal predecessors, (13), 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 19:21:10,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 13 transitions. [2022-04-18 19:21:10,259 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 13 transitions. Word has length 1 [2022-04-18 19:21:10,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-18 19:21:10,259 INFO L478 AbstractCegarLoop]: Abstraction has 11 states and 13 transitions. [2022-04-18 19:21:10,259 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 19:21:10,260 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 13 transitions. [2022-04-18 19:21:10,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-04-18 19:21:10,260 INFO L491 BasicCegarLoop]: Found error trace [2022-04-18 19:21:10,260 INFO L499 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2022-04-18 19:21:10,261 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-04-18 19:21:10,261 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thrErr0ASSERT_VIOLATIONDATA_RACE (and 11 more)] === [2022-04-18 19:21:10,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 19:21:10,262 INFO L85 PathProgramCache]: Analyzing trace with hash -1600721553, now seen corresponding path program 1 times [2022-04-18 19:21:10,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-04-18 19:21:10,262 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [291494278] [2022-04-18 19:21:10,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 19:21:10,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 19:21:10,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-18 19:21:10,298 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-04-18 19:21:10,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-18 19:21:10,330 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-04-18 19:21:10,331 INFO L618 BasicCegarLoop]: Counterexample is feasible [2022-04-18 19:21:10,332 INFO L788 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (13 of 14 remaining) [2022-04-18 19:21:10,333 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (12 of 14 remaining) [2022-04-18 19:21:10,334 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONDATA_RACE (11 of 14 remaining) [2022-04-18 19:21:10,334 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr1ASSERT_VIOLATIONDATA_RACE (10 of 14 remaining) [2022-04-18 19:21:10,334 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr2ASSERT_VIOLATIONDATA_RACE (9 of 14 remaining) [2022-04-18 19:21:10,335 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr3ASSERT_VIOLATIONDATA_RACE (8 of 14 remaining) [2022-04-18 19:21:10,335 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr4ASSERT_VIOLATIONDATA_RACE (7 of 14 remaining) [2022-04-18 19:21:10,335 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr5ASSERT_VIOLATIONDATA_RACE (6 of 14 remaining) [2022-04-18 19:21:10,335 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONDATA_RACE (5 of 14 remaining) [2022-04-18 19:21:10,335 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr1ASSERT_VIOLATIONDATA_RACE (4 of 14 remaining) [2022-04-18 19:21:10,336 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr2ASSERT_VIOLATIONDATA_RACE (3 of 14 remaining) [2022-04-18 19:21:10,336 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr3ASSERT_VIOLATIONDATA_RACE (2 of 14 remaining) [2022-04-18 19:21:10,336 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr4ASSERT_VIOLATIONDATA_RACE (1 of 14 remaining) [2022-04-18 19:21:10,336 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr5ASSERT_VIOLATIONDATA_RACE (0 of 14 remaining) [2022-04-18 19:21:10,337 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-04-18 19:21:10,339 INFO L719 BasicCegarLoop]: Path program histogram: [1, 1] [2022-04-18 19:21:10,340 WARN L232 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-04-18 19:21:10,340 INFO L504 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-04-18 19:21:10,354 INFO L135 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-04-18 19:21:10,355 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-18 19:21:10,356 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 19:21:10,356 INFO L341 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2022-04-18 19:21:10,358 INFO L116 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-04-18 19:21:10,358 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 116 places, 115 transitions, 242 flow [2022-04-18 19:21:10,359 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 116 places, 115 transitions, 242 flow [2022-04-18 19:21:10,359 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 116 places, 115 transitions, 242 flow [2022-04-18 19:21:10,399 INFO L129 PetriNetUnfolder]: 6/144 cut-off events. [2022-04-18 19:21:10,399 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-04-18 19:21:10,402 INFO L84 FinitePrefix]: Finished finitePrefix Result has 154 conditions, 144 events. 6/144 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 245 event pairs, 0 based on Foata normal form. 0/122 useless extension candidates. Maximal degree in co-relation 97. Up to 6 conditions per place. [2022-04-18 19:21:10,405 INFO L116 LiptonReduction]: Number of co-enabled transitions 4020 [2022-04-18 19:21:12,127 INFO L131 LiptonReduction]: Checked pairs total: 11855 [2022-04-18 19:21:12,128 INFO L133 LiptonReduction]: Total number of compositions: 131 [2022-04-18 19:21:12,129 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 40 places, 35 transitions, 82 flow [2022-04-18 19:21:12,192 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 1248 states, 1141 states have (on average 2.890446976336547) internal successors, (3298), 1247 states have internal predecessors, (3298), 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 19:21:12,195 INFO L276 IsEmpty]: Start isEmpty. Operand has 1248 states, 1141 states have (on average 2.890446976336547) internal successors, (3298), 1247 states have internal predecessors, (3298), 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 19:21:12,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2 [2022-04-18 19:21:12,195 INFO L491 BasicCegarLoop]: Found error trace [2022-04-18 19:21:12,195 INFO L499 BasicCegarLoop]: trace histogram [1] [2022-04-18 19:21:12,196 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thrErr0ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2022-04-18 19:21:12,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 19:21:12,196 INFO L85 PathProgramCache]: Analyzing trace with hash 646, now seen corresponding path program 1 times [2022-04-18 19:21:12,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-04-18 19:21:12,197 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414106566] [2022-04-18 19:21:12,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 19:21:12,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 19:21:12,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 19:21:12,207 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 19:21:12,208 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-04-18 19:21:12,208 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414106566] [2022-04-18 19:21:12,208 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1414106566] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 19:21:12,208 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 19:21:12,209 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-04-18 19:21:12,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010624106] [2022-04-18 19:21:12,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 19:21:12,209 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-04-18 19:21:12,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-04-18 19:21:12,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-04-18 19:21:12,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-04-18 19:21:12,213 INFO L87 Difference]: Start difference. First operand has 1248 states, 1141 states have (on average 2.890446976336547) internal successors, (3298), 1247 states have internal predecessors, (3298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 19:21:12,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-18 19:21:12,253 INFO L93 Difference]: Finished difference Result 651 states and 1673 transitions. [2022-04-18 19:21:12,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-04-18 19:21:12,254 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1 [2022-04-18 19:21:12,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-18 19:21:12,263 INFO L225 Difference]: With dead ends: 651 [2022-04-18 19:21:12,264 INFO L226 Difference]: Without dead ends: 641 [2022-04-18 19:21:12,264 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 0 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-04-18 19:21:12,265 INFO L913 BasicCegarLoop]: 11 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-18 19:21:12,266 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 11 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-18 19:21:12,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 641 states. [2022-04-18 19:21:12,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 641 to 641. [2022-04-18 19:21:12,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 641 states, 622 states have (on average 2.644694533762058) internal successors, (1645), 640 states have internal predecessors, (1645), 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 19:21:12,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 641 states to 641 states and 1645 transitions. [2022-04-18 19:21:12,326 INFO L78 Accepts]: Start accepts. Automaton has 641 states and 1645 transitions. Word has length 1 [2022-04-18 19:21:12,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-18 19:21:12,327 INFO L478 AbstractCegarLoop]: Abstraction has 641 states and 1645 transitions. [2022-04-18 19:21:12,327 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 19:21:12,327 INFO L276 IsEmpty]: Start isEmpty. Operand 641 states and 1645 transitions. [2022-04-18 19:21:12,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-04-18 19:21:12,328 INFO L491 BasicCegarLoop]: Found error trace [2022-04-18 19:21:12,328 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-04-18 19:21:12,328 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-04-18 19:21:12,328 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting thrErr2ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thrErr0ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2022-04-18 19:21:12,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 19:21:12,329 INFO L85 PathProgramCache]: Analyzing trace with hash 1850995429, now seen corresponding path program 1 times [2022-04-18 19:21:12,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-04-18 19:21:12,329 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019279300] [2022-04-18 19:21:12,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 19:21:12,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 19:21:12,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 19:21:12,381 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 19:21:12,381 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-04-18 19:21:12,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019279300] [2022-04-18 19:21:12,382 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1019279300] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 19:21:12,382 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 19:21:12,382 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 19:21:12,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319228925] [2022-04-18 19:21:12,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 19:21:12,383 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 19:21:12,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-04-18 19:21:12,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 19:21:12,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 19:21:12,384 INFO L87 Difference]: Start difference. First operand 641 states and 1645 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 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 19:21:12,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-18 19:21:12,441 INFO L93 Difference]: Finished difference Result 602 states and 1468 transitions. [2022-04-18 19:21:12,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 19:21:12,442 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-04-18 19:21:12,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-18 19:21:12,446 INFO L225 Difference]: With dead ends: 602 [2022-04-18 19:21:12,447 INFO L226 Difference]: Without dead ends: 602 [2022-04-18 19:21:12,447 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 19:21:12,448 INFO L913 BasicCegarLoop]: 11 mSDtfsCounter, 18 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-18 19:21:12,448 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [18 Valid, 18 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-18 19:21:12,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 602 states. [2022-04-18 19:21:12,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 602 to 546. [2022-04-18 19:21:12,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 546 states, 534 states have (on average 2.561797752808989) internal successors, (1368), 545 states have internal predecessors, (1368), 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 19:21:12,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 546 states to 546 states and 1368 transitions. [2022-04-18 19:21:12,494 INFO L78 Accepts]: Start accepts. Automaton has 546 states and 1368 transitions. Word has length 6 [2022-04-18 19:21:12,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-18 19:21:12,494 INFO L478 AbstractCegarLoop]: Abstraction has 546 states and 1368 transitions. [2022-04-18 19:21:12,495 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 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 19:21:12,495 INFO L276 IsEmpty]: Start isEmpty. Operand 546 states and 1368 transitions. [2022-04-18 19:21:12,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-04-18 19:21:12,496 INFO L491 BasicCegarLoop]: Found error trace [2022-04-18 19:21:12,496 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 19:21:12,497 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-04-18 19:21:12,501 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting thrErr3ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thrErr0ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2022-04-18 19:21:12,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 19:21:12,502 INFO L85 PathProgramCache]: Analyzing trace with hash 690163111, now seen corresponding path program 1 times [2022-04-18 19:21:12,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-04-18 19:21:12,503 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464142133] [2022-04-18 19:21:12,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 19:21:12,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 19:21:12,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 19:21:12,553 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 19:21:12,554 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-04-18 19:21:12,554 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464142133] [2022-04-18 19:21:12,554 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1464142133] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 19:21:12,554 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 19:21:12,555 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 19:21:12,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235090754] [2022-04-18 19:21:12,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 19:21:12,555 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 19:21:12,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-04-18 19:21:12,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 19:21:12,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 19:21:12,556 INFO L87 Difference]: Start difference. First operand 546 states and 1368 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 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 19:21:12,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-18 19:21:12,601 INFO L93 Difference]: Finished difference Result 691 states and 1675 transitions. [2022-04-18 19:21:12,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 19:21:12,602 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-04-18 19:21:12,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-18 19:21:12,605 INFO L225 Difference]: With dead ends: 691 [2022-04-18 19:21:12,606 INFO L226 Difference]: Without dead ends: 654 [2022-04-18 19:21:12,606 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 19:21:12,607 INFO L913 BasicCegarLoop]: 16 mSDtfsCounter, 18 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-18 19:21:12,607 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [18 Valid, 22 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-18 19:21:12,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 654 states. [2022-04-18 19:21:12,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 654 to 532. [2022-04-18 19:21:12,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 532 states, 523 states have (on average 2.4550669216061185) internal successors, (1284), 531 states have internal predecessors, (1284), 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 19:21:12,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 532 states to 532 states and 1284 transitions. [2022-04-18 19:21:12,656 INFO L78 Accepts]: Start accepts. Automaton has 532 states and 1284 transitions. Word has length 8 [2022-04-18 19:21:12,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-18 19:21:12,657 INFO L478 AbstractCegarLoop]: Abstraction has 532 states and 1284 transitions. [2022-04-18 19:21:12,657 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 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 19:21:12,657 INFO L276 IsEmpty]: Start isEmpty. Operand 532 states and 1284 transitions. [2022-04-18 19:21:12,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-04-18 19:21:12,658 INFO L491 BasicCegarLoop]: Found error trace [2022-04-18 19:21:12,658 INFO L499 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2022-04-18 19:21:12,658 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-04-18 19:21:12,658 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thrErr0ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2022-04-18 19:21:12,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 19:21:12,659 INFO L85 PathProgramCache]: Analyzing trace with hash -273194933, now seen corresponding path program 1 times [2022-04-18 19:21:12,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-04-18 19:21:12,659 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384161592] [2022-04-18 19:21:12,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 19:21:12,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 19:21:12,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-18 19:21:12,692 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-04-18 19:21:12,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-18 19:21:12,709 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-04-18 19:21:12,709 INFO L618 BasicCegarLoop]: Counterexample is feasible [2022-04-18 19:21:12,709 INFO L788 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (19 of 20 remaining) [2022-04-18 19:21:12,710 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (18 of 20 remaining) [2022-04-18 19:21:12,710 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONDATA_RACE (17 of 20 remaining) [2022-04-18 19:21:12,710 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr1ASSERT_VIOLATIONDATA_RACE (16 of 20 remaining) [2022-04-18 19:21:12,710 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr2ASSERT_VIOLATIONDATA_RACE (15 of 20 remaining) [2022-04-18 19:21:12,710 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr3ASSERT_VIOLATIONDATA_RACE (14 of 20 remaining) [2022-04-18 19:21:12,711 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr4ASSERT_VIOLATIONDATA_RACE (13 of 20 remaining) [2022-04-18 19:21:12,711 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr5ASSERT_VIOLATIONDATA_RACE (12 of 20 remaining) [2022-04-18 19:21:12,711 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONDATA_RACE (11 of 20 remaining) [2022-04-18 19:21:12,711 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr1ASSERT_VIOLATIONDATA_RACE (10 of 20 remaining) [2022-04-18 19:21:12,711 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr2ASSERT_VIOLATIONDATA_RACE (9 of 20 remaining) [2022-04-18 19:21:12,712 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr3ASSERT_VIOLATIONDATA_RACE (8 of 20 remaining) [2022-04-18 19:21:12,712 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr4ASSERT_VIOLATIONDATA_RACE (7 of 20 remaining) [2022-04-18 19:21:12,712 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr5ASSERT_VIOLATIONDATA_RACE (6 of 20 remaining) [2022-04-18 19:21:12,712 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONDATA_RACE (5 of 20 remaining) [2022-04-18 19:21:12,712 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr1ASSERT_VIOLATIONDATA_RACE (4 of 20 remaining) [2022-04-18 19:21:12,713 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr2ASSERT_VIOLATIONDATA_RACE (3 of 20 remaining) [2022-04-18 19:21:12,713 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr3ASSERT_VIOLATIONDATA_RACE (2 of 20 remaining) [2022-04-18 19:21:12,713 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr4ASSERT_VIOLATIONDATA_RACE (1 of 20 remaining) [2022-04-18 19:21:12,713 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr5ASSERT_VIOLATIONDATA_RACE (0 of 20 remaining) [2022-04-18 19:21:12,713 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-04-18 19:21:12,714 INFO L719 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2022-04-18 19:21:12,714 WARN L232 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-04-18 19:21:12,714 INFO L504 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-04-18 19:21:12,727 INFO L135 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-04-18 19:21:12,729 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-18 19:21:12,729 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 19:21:12,729 INFO L341 AbstractCegarLoop]: Starting to check reachability of 26 error locations. [2022-04-18 19:21:12,731 INFO L116 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-04-18 19:21:12,732 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 148 places, 146 transitions, 313 flow [2022-04-18 19:21:12,732 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 148 places, 146 transitions, 313 flow [2022-04-18 19:21:12,732 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 148 places, 146 transitions, 313 flow [2022-04-18 19:21:12,756 INFO L129 PetriNetUnfolder]: 8/192 cut-off events. [2022-04-18 19:21:12,757 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2022-04-18 19:21:12,759 INFO L84 FinitePrefix]: Finished finitePrefix Result has 208 conditions, 192 events. 8/192 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 410 event pairs, 0 based on Foata normal form. 0/161 useless extension candidates. Maximal degree in co-relation 148. Up to 8 conditions per place. [2022-04-18 19:21:12,766 INFO L116 LiptonReduction]: Number of co-enabled transitions 8820 [2022-04-18 19:21:14,912 INFO L131 LiptonReduction]: Checked pairs total: 29321 [2022-04-18 19:21:14,913 INFO L133 LiptonReduction]: Total number of compositions: 167 [2022-04-18 19:21:14,914 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 56 places, 49 transitions, 119 flow [2022-04-18 19:21:15,552 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 17515 states, 16769 states have (on average 3.7279503846383206) internal successors, (62514), 17514 states have internal predecessors, (62514), 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 19:21:15,597 INFO L276 IsEmpty]: Start isEmpty. Operand has 17515 states, 16769 states have (on average 3.7279503846383206) internal successors, (62514), 17514 states have internal predecessors, (62514), 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 19:21:15,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2 [2022-04-18 19:21:15,598 INFO L491 BasicCegarLoop]: Found error trace [2022-04-18 19:21:15,598 INFO L499 BasicCegarLoop]: trace histogram [1] [2022-04-18 19:21:15,599 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thrErr0ASSERT_VIOLATIONDATA_RACE (and 23 more)] === [2022-04-18 19:21:15,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 19:21:15,599 INFO L85 PathProgramCache]: Analyzing trace with hash 975, now seen corresponding path program 1 times [2022-04-18 19:21:15,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-04-18 19:21:15,600 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073361719] [2022-04-18 19:21:15,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 19:21:15,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 19:21:15,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 19:21:15,621 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 19:21:15,621 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-04-18 19:21:15,623 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1073361719] [2022-04-18 19:21:15,623 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1073361719] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 19:21:15,623 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 19:21:15,623 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-04-18 19:21:15,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768174638] [2022-04-18 19:21:15,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 19:21:15,624 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-04-18 19:21:15,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-04-18 19:21:15,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-04-18 19:21:15,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-04-18 19:21:15,663 INFO L87 Difference]: Start difference. First operand has 17515 states, 16769 states have (on average 3.7279503846383206) internal successors, (62514), 17514 states have internal predecessors, (62514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 19:21:15,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-18 19:21:15,781 INFO L93 Difference]: Finished difference Result 6550 states and 22689 transitions. [2022-04-18 19:21:15,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-04-18 19:21:15,781 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1 [2022-04-18 19:21:15,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-18 19:21:15,837 INFO L225 Difference]: With dead ends: 6550 [2022-04-18 19:21:15,837 INFO L226 Difference]: Without dead ends: 6514 [2022-04-18 19:21:15,837 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 0 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-04-18 19:21:15,838 INFO L913 BasicCegarLoop]: 17 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-18 19:21:15,839 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 17 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-18 19:21:15,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6514 states. [2022-04-18 19:21:16,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6514 to 6514. [2022-04-18 19:21:16,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6514 states, 6451 states have (on average 3.496667183382421) internal successors, (22557), 6513 states have internal predecessors, (22557), 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 19:21:16,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6514 states to 6514 states and 22557 transitions. [2022-04-18 19:21:16,206 INFO L78 Accepts]: Start accepts. Automaton has 6514 states and 22557 transitions. Word has length 1 [2022-04-18 19:21:16,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-18 19:21:16,211 INFO L478 AbstractCegarLoop]: Abstraction has 6514 states and 22557 transitions. [2022-04-18 19:21:16,213 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 19:21:16,214 INFO L276 IsEmpty]: Start isEmpty. Operand 6514 states and 22557 transitions. [2022-04-18 19:21:16,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-04-18 19:21:16,214 INFO L491 BasicCegarLoop]: Found error trace [2022-04-18 19:21:16,214 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-04-18 19:21:16,214 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-04-18 19:21:16,215 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting thrErr2ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thrErr0ASSERT_VIOLATIONDATA_RACE (and 23 more)] === [2022-04-18 19:21:16,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 19:21:16,216 INFO L85 PathProgramCache]: Analyzing trace with hash -1121516092, now seen corresponding path program 1 times [2022-04-18 19:21:16,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-04-18 19:21:16,217 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132641690] [2022-04-18 19:21:16,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 19:21:16,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 19:21:16,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 19:21:16,262 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 19:21:16,262 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-04-18 19:21:16,262 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132641690] [2022-04-18 19:21:16,262 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [132641690] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 19:21:16,263 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 19:21:16,263 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 19:21:16,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755264074] [2022-04-18 19:21:16,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 19:21:16,264 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 19:21:16,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-04-18 19:21:16,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 19:21:16,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 19:21:16,264 INFO L87 Difference]: Start difference. First operand 6514 states and 22557 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 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 19:21:16,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-18 19:21:16,378 INFO L93 Difference]: Finished difference Result 6564 states and 21002 transitions. [2022-04-18 19:21:16,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 19:21:16,379 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-04-18 19:21:16,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-18 19:21:16,438 INFO L225 Difference]: With dead ends: 6564 [2022-04-18 19:21:16,438 INFO L226 Difference]: Without dead ends: 6564 [2022-04-18 19:21:16,438 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 19:21:16,440 INFO L913 BasicCegarLoop]: 18 mSDtfsCounter, 25 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-18 19:21:16,441 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [25 Valid, 27 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-18 19:21:16,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6564 states. [2022-04-18 19:21:16,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6564 to 5456. [2022-04-18 19:21:16,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5456 states, 5411 states have (on average 3.3607466272408058) internal successors, (18185), 5455 states have internal predecessors, (18185), 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 19:21:16,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5456 states to 5456 states and 18185 transitions. [2022-04-18 19:21:16,691 INFO L78 Accepts]: Start accepts. Automaton has 5456 states and 18185 transitions. Word has length 6 [2022-04-18 19:21:16,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-18 19:21:16,692 INFO L478 AbstractCegarLoop]: Abstraction has 5456 states and 18185 transitions. [2022-04-18 19:21:16,692 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 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 19:21:16,692 INFO L276 IsEmpty]: Start isEmpty. Operand 5456 states and 18185 transitions. [2022-04-18 19:21:16,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-04-18 19:21:16,693 INFO L491 BasicCegarLoop]: Found error trace [2022-04-18 19:21:16,693 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 19:21:16,693 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-04-18 19:21:16,693 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting thrErr3ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thrErr0ASSERT_VIOLATIONDATA_RACE (and 23 more)] === [2022-04-18 19:21:16,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 19:21:16,694 INFO L85 PathProgramCache]: Analyzing trace with hash 259851174, now seen corresponding path program 1 times [2022-04-18 19:21:16,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-04-18 19:21:16,694 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809460121] [2022-04-18 19:21:16,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 19:21:16,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 19:21:16,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 19:21:16,782 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 19:21:16,783 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-04-18 19:21:16,783 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809460121] [2022-04-18 19:21:16,783 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [809460121] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 19:21:16,783 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 19:21:16,783 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 19:21:16,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174574674] [2022-04-18 19:21:16,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 19:21:16,784 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 19:21:16,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-04-18 19:21:16,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 19:21:16,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 19:21:16,784 INFO L87 Difference]: Start difference. First operand 5456 states and 18185 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 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 19:21:16,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-18 19:21:16,902 INFO L93 Difference]: Finished difference Result 8558 states and 27281 transitions. [2022-04-18 19:21:16,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 19:21:16,903 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-04-18 19:21:16,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-18 19:21:16,940 INFO L225 Difference]: With dead ends: 8558 [2022-04-18 19:21:16,940 INFO L226 Difference]: Without dead ends: 8372 [2022-04-18 19:21:16,940 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 19:21:16,941 INFO L913 BasicCegarLoop]: 26 mSDtfsCounter, 25 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-18 19:21:16,941 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [25 Valid, 36 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-18 19:21:16,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8372 states. [2022-04-18 19:21:17,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8372 to 6118. [2022-04-18 19:21:17,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6118 states, 6077 states have (on average 3.2502879710383414) internal successors, (19752), 6117 states have internal predecessors, (19752), 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 19:21:17,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6118 states to 6118 states and 19752 transitions. [2022-04-18 19:21:17,284 INFO L78 Accepts]: Start accepts. Automaton has 6118 states and 19752 transitions. Word has length 8 [2022-04-18 19:21:17,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-18 19:21:17,285 INFO L478 AbstractCegarLoop]: Abstraction has 6118 states and 19752 transitions. [2022-04-18 19:21:17,285 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 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 19:21:17,285 INFO L276 IsEmpty]: Start isEmpty. Operand 6118 states and 19752 transitions. [2022-04-18 19:21:17,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-04-18 19:21:17,286 INFO L491 BasicCegarLoop]: Found error trace [2022-04-18 19:21:17,287 INFO L499 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 19:21:17,287 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-04-18 19:21:17,287 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting thrErr3ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thrErr0ASSERT_VIOLATIONDATA_RACE (and 23 more)] === [2022-04-18 19:21:17,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 19:21:17,288 INFO L85 PathProgramCache]: Analyzing trace with hash 468027530, now seen corresponding path program 1 times [2022-04-18 19:21:17,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-04-18 19:21:17,288 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203068065] [2022-04-18 19:21:17,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 19:21:17,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 19:21:17,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-18 19:21:17,301 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-04-18 19:21:17,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-18 19:21:17,337 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-04-18 19:21:17,338 INFO L618 BasicCegarLoop]: Counterexample is feasible [2022-04-18 19:21:17,338 INFO L788 garLoopResultBuilder]: Registering result UNSAFE for location thrErr3ASSERT_VIOLATIONDATA_RACE (25 of 26 remaining) [2022-04-18 19:21:17,338 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (24 of 26 remaining) [2022-04-18 19:21:17,339 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (23 of 26 remaining) [2022-04-18 19:21:17,339 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONDATA_RACE (22 of 26 remaining) [2022-04-18 19:21:17,339 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr1ASSERT_VIOLATIONDATA_RACE (21 of 26 remaining) [2022-04-18 19:21:17,339 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr2ASSERT_VIOLATIONDATA_RACE (20 of 26 remaining) [2022-04-18 19:21:17,340 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr3ASSERT_VIOLATIONDATA_RACE (19 of 26 remaining) [2022-04-18 19:21:17,340 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr4ASSERT_VIOLATIONDATA_RACE (18 of 26 remaining) [2022-04-18 19:21:17,340 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr5ASSERT_VIOLATIONDATA_RACE (17 of 26 remaining) [2022-04-18 19:21:17,340 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONDATA_RACE (16 of 26 remaining) [2022-04-18 19:21:17,340 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr1ASSERT_VIOLATIONDATA_RACE (15 of 26 remaining) [2022-04-18 19:21:17,341 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr2ASSERT_VIOLATIONDATA_RACE (14 of 26 remaining) [2022-04-18 19:21:17,341 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr3ASSERT_VIOLATIONDATA_RACE (13 of 26 remaining) [2022-04-18 19:21:17,341 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr4ASSERT_VIOLATIONDATA_RACE (12 of 26 remaining) [2022-04-18 19:21:17,341 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr5ASSERT_VIOLATIONDATA_RACE (11 of 26 remaining) [2022-04-18 19:21:17,341 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONDATA_RACE (10 of 26 remaining) [2022-04-18 19:21:17,342 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr1ASSERT_VIOLATIONDATA_RACE (9 of 26 remaining) [2022-04-18 19:21:17,342 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr2ASSERT_VIOLATIONDATA_RACE (8 of 26 remaining) [2022-04-18 19:21:17,342 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr3ASSERT_VIOLATIONDATA_RACE (7 of 26 remaining) [2022-04-18 19:21:17,342 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr4ASSERT_VIOLATIONDATA_RACE (6 of 26 remaining) [2022-04-18 19:21:17,342 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr5ASSERT_VIOLATIONDATA_RACE (5 of 26 remaining) [2022-04-18 19:21:17,343 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONDATA_RACE (4 of 26 remaining) [2022-04-18 19:21:17,343 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr1ASSERT_VIOLATIONDATA_RACE (3 of 26 remaining) [2022-04-18 19:21:17,343 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr2ASSERT_VIOLATIONDATA_RACE (2 of 26 remaining) [2022-04-18 19:21:17,343 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr4ASSERT_VIOLATIONDATA_RACE (1 of 26 remaining) [2022-04-18 19:21:17,343 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr5ASSERT_VIOLATIONDATA_RACE (0 of 26 remaining) [2022-04-18 19:21:17,344 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-04-18 19:21:17,344 INFO L719 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2022-04-18 19:21:17,348 INFO L227 ceAbstractionStarter]: Analysis of concurrent program completed with 3 thread instances [2022-04-18 19:21:17,349 INFO L177 ceAbstractionStarter]: Computing trace abstraction results [2022-04-18 19:21:17,435 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.04 07:21:17 BasicIcfg [2022-04-18 19:21:17,435 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-04-18 19:21:17,435 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-04-18 19:21:17,435 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-04-18 19:21:17,435 INFO L275 PluginConnector]: Witness Printer initialized [2022-04-18 19:21:17,436 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 07:21:07" (3/4) ... [2022-04-18 19:21:17,438 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-04-18 19:21:17,438 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-04-18 19:21:17,438 INFO L158 Benchmark]: Toolchain (without parser) took 10375.73ms. Allocated memory was 92.3MB in the beginning and 564.1MB in the end (delta: 471.9MB). Free memory was 57.5MB in the beginning and 406.1MB in the end (delta: -348.6MB). Peak memory consumption was 120.8MB. Max. memory is 16.1GB. [2022-04-18 19:21:17,438 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 92.3MB. Free memory is still 46.5MB. There was no memory consumed. Max. memory is 16.1GB. [2022-04-18 19:21:17,439 INFO L158 Benchmark]: CACSL2BoogieTranslator took 399.26ms. Allocated memory was 92.3MB in the beginning and 130.0MB in the end (delta: 37.7MB). Free memory was 57.2MB in the beginning and 95.3MB in the end (delta: -38.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-04-18 19:21:17,439 INFO L158 Benchmark]: Boogie Procedure Inliner took 40.21ms. Allocated memory is still 130.0MB. Free memory was 95.3MB in the beginning and 93.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-04-18 19:21:17,439 INFO L158 Benchmark]: Boogie Preprocessor took 23.42ms. Allocated memory is still 130.0MB. Free memory was 93.2MB in the beginning and 92.0MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-04-18 19:21:17,440 INFO L158 Benchmark]: RCFGBuilder took 392.99ms. Allocated memory is still 130.0MB. Free memory was 92.0MB in the beginning and 78.6MB in the end (delta: 13.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-04-18 19:21:17,440 INFO L158 Benchmark]: TraceAbstraction took 9511.79ms. Allocated memory was 130.0MB in the beginning and 564.1MB in the end (delta: 434.1MB). Free memory was 78.1MB in the beginning and 406.1MB in the end (delta: -328.0MB). Peak memory consumption was 142.4MB. Max. memory is 16.1GB. [2022-04-18 19:21:17,440 INFO L158 Benchmark]: Witness Printer took 2.66ms. Allocated memory is still 564.1MB. Free memory is still 406.1MB. There was no memory consumed. Max. memory is 16.1GB. [2022-04-18 19:21:17,459 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 92.3MB. Free memory is still 46.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 399.26ms. Allocated memory was 92.3MB in the beginning and 130.0MB in the end (delta: 37.7MB). Free memory was 57.2MB in the beginning and 95.3MB in the end (delta: -38.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 40.21ms. Allocated memory is still 130.0MB. Free memory was 95.3MB in the beginning and 93.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 23.42ms. Allocated memory is still 130.0MB. Free memory was 93.2MB in the beginning and 92.0MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 392.99ms. Allocated memory is still 130.0MB. Free memory was 92.0MB in the beginning and 78.6MB in the end (delta: 13.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 9511.79ms. Allocated memory was 130.0MB in the beginning and 564.1MB in the end (delta: 434.1MB). Free memory was 78.1MB in the beginning and 406.1MB in the end (delta: -328.0MB). Peak memory consumption was 142.4MB. Max. memory is 16.1GB. * Witness Printer took 2.66ms. Allocated memory is still 564.1MB. Free memory is still 406.1MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.9s, 84 PlacesBefore, 17 PlacesAfterwards, 84 TransitionsBefore, 14 TransitionsAfterwards, 1080 CoEnabledTransitionPairs, 7 FixpointIterations, 38 TrivialSequentialCompositions, 54 ConcurrentSequentialCompositions, 2 TrivialYvCompositions, 4 ConcurrentYvCompositions, 3 ChoiceCompositions, 101 TotalNumberOfCompositions, 1020 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1020, positive: 1020, positive conditional: 0, positive unconditional: 1020, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 660, positive: 660, positive conditional: 0, positive unconditional: 660, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 660, positive: 660, positive conditional: 0, positive unconditional: 660, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1020, positive: 360, positive conditional: 0, positive unconditional: 360, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 660, unknown conditional: 0, unknown unconditional: 660] , Statistics on independence cache: Total cache size (in pairs): 7, Positive cache size: 7, Positive conditional cache size: 0, Positive unconditional cache size: 7, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.8s, 116 PlacesBefore, 40 PlacesAfterwards, 115 TransitionsBefore, 35 TransitionsAfterwards, 4020 CoEnabledTransitionPairs, 10 FixpointIterations, 34 TrivialSequentialCompositions, 82 ConcurrentSequentialCompositions, 4 TrivialYvCompositions, 7 ConcurrentYvCompositions, 4 ChoiceCompositions, 131 TotalNumberOfCompositions, 11855 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 7238, positive: 6893, positive conditional: 0, positive unconditional: 6893, negative: 345, negative conditional: 0, negative unconditional: 345, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 2798, positive: 2730, positive conditional: 0, positive unconditional: 2730, negative: 68, negative conditional: 0, negative unconditional: 68, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 2798, positive: 2564, positive conditional: 0, positive unconditional: 2564, negative: 234, negative conditional: 0, negative unconditional: 234, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 234, positive: 166, positive conditional: 0, positive unconditional: 166, negative: 68, negative conditional: 0, negative unconditional: 68, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 171, positive: 100, positive conditional: 0, positive unconditional: 100, negative: 71, negative conditional: 0, negative unconditional: 71, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 7238, positive: 4163, positive conditional: 0, positive unconditional: 4163, negative: 277, negative conditional: 0, negative unconditional: 277, unknown: 2798, unknown conditional: 0, unknown unconditional: 2798] , Statistics on independence cache: Total cache size (in pairs): 291, Positive cache size: 267, Positive conditional cache size: 0, Positive unconditional cache size: 267, Negative cache size: 24, Negative conditional cache size: 0, Negative unconditional cache size: 24 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.2s, 148 PlacesBefore, 56 PlacesAfterwards, 146 TransitionsBefore, 49 TransitionsAfterwards, 8820 CoEnabledTransitionPairs, 10 FixpointIterations, 35 TrivialSequentialCompositions, 115 ConcurrentSequentialCompositions, 3 TrivialYvCompositions, 9 ConcurrentYvCompositions, 5 ChoiceCompositions, 167 TotalNumberOfCompositions, 29321 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 14715, positive: 14193, positive conditional: 0, positive unconditional: 14193, negative: 522, negative conditional: 0, negative unconditional: 522, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 6385, positive: 6286, positive conditional: 0, positive unconditional: 6286, negative: 99, negative conditional: 0, negative unconditional: 99, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 6385, positive: 5607, positive conditional: 0, positive unconditional: 5607, negative: 778, negative conditional: 0, negative unconditional: 778, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 778, positive: 679, positive conditional: 0, positive unconditional: 679, negative: 99, negative conditional: 0, negative unconditional: 99, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 349, positive: 273, positive conditional: 0, positive unconditional: 273, negative: 76, negative conditional: 0, negative unconditional: 76, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 14715, positive: 7907, positive conditional: 0, positive unconditional: 7907, negative: 423, negative conditional: 0, negative unconditional: 423, unknown: 6385, unknown conditional: 0, unknown unconditional: 6385] , Statistics on independence cache: Total cache size (in pairs): 503, Positive cache size: 466, Positive conditional cache size: 0, Positive unconditional cache size: 466, Negative cache size: 37, Negative conditional cache size: 0, Negative unconditional cache size: 37 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - DataRaceFoundResult [Line: 711]: Data race detected Data race detected The following path leads to a data race: [L697] 0 volatile int s; [L698] 0 volatile int t; [L716] 0 pthread_t t; [L717] 0 int i, n; [L718] 0 s = 0 [L719] 0 n = __VERIFIER_nondet_int() [L720] CALL 0 assume_abort_if_not(n > 0) [L686] COND FALSE 0 !(!cond) [L720] RET 0 assume_abort_if_not(n > 0) [L721] 0 i = 0 VAL [i=0, n=2, s=0, t={3:0}, t=0] [L721] COND TRUE 0 i < n [L722] FCALL, FORK 0 pthread_create(&t, 0, thr, 0) VAL [i=0, n=2, pthread_create(&t, 0, thr, 0)=-1, s=0, t=0, t={3:0}] [L721] 0 i++ VAL [i=1, n=2, s=0, t={3:0}, t=0] [L721] COND TRUE 0 i < n [L722] FCALL, FORK 0 pthread_create(&t, 0, thr, 0) VAL [i=1, n=2, pthread_create(&t, 0, thr, 0)=0, s=0, t=0, t={3:0}] [L710] CALL 2 inct() [L701] 2 t++ [L710] RET 2 inct() [L711] 2 s < t VAL [arg={0:0}, arg={0:0}, s=0, t=1] [L710] CALL 1 inct() [L701] 1 t++ [L710] RET 1 inct() [L711] 2 s < t VAL [arg={0:0}, arg={0:0}, s=0, t=2] Now there is a data race on ~t~0 between C: t++ [701] and C: s < t [711] - UnprovableResult [Line: 718]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 722]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 701]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 701]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 711]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 706]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 706]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 112 locations, 14 error locations. Started 1 CEGAR loops. OverallTime: 2.3s, OverallIterations: 2, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 1 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 6 IncrementalHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 1 mSDtfsCounter, 6 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 0 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=43occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 7 NumberOfCodeBlocks, 7 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data with 2 thread instances CFG has 4 procedures, 142 locations, 20 error locations. Started 1 CEGAR loops. OverallTime: 2.4s, OverallIterations: 4, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.8s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 36 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 36 mSDsluCounter, 51 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 35 mSDsCounter, 8 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 97 IncrementalHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 8 mSolverCounterUnsat, 38 mSDtfsCounter, 97 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1248occurred in iteration=0, InterpolantAutomatonStates: 8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 3 MinimizatonAttempts, 178 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 26 NumberOfCodeBlocks, 26 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 12 ConstructedInterpolants, 0 QuantifiedInterpolants, 16 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data with 3 thread instances CFG has 5 procedures, 172 locations, 26 error locations. Started 1 CEGAR loops. OverallTime: 4.6s, OverallIterations: 4, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.8s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 50 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 50 mSDsluCounter, 80 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 47 mSDsCounter, 14 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 123 IncrementalHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 14 mSolverCounterUnsat, 61 mSDtfsCounter, 123 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=17515occurred in iteration=0, InterpolantAutomatonStates: 8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 3362 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 28 NumberOfCodeBlocks, 28 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 12 ConstructedInterpolants, 0 QuantifiedInterpolants, 16 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-04-18 19:21:17,607 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE