./Ultimate.py --spec /storage/repos/ultimate/trunk/examples/svcomp/properties/no-data-race.prp --file /storage/repos/ultimate/trunk/examples/svcomp/pthread-divine/condvar.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-divine/condvar.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 08550a9d023a2de1ac334a3445fa7327c26092d061f764efe50453540d837a7a --- Real Ultimate output --- This is Ultimate 0.2.2-dev-efd9311-m [2022-04-18 18:57:28,710 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-04-18 18:57:28,712 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-04-18 18:57:28,736 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-04-18 18:57:28,737 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-04-18 18:57:28,737 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-04-18 18:57:28,739 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-04-18 18:57:28,740 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-04-18 18:57:28,741 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-04-18 18:57:28,742 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-04-18 18:57:28,743 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-04-18 18:57:28,744 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-04-18 18:57:28,744 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-04-18 18:57:28,745 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-04-18 18:57:28,746 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-04-18 18:57:28,748 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-04-18 18:57:28,749 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-04-18 18:57:28,754 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-04-18 18:57:28,756 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-04-18 18:57:28,760 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-04-18 18:57:28,764 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-04-18 18:57:28,765 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-04-18 18:57:28,766 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-04-18 18:57:28,767 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-04-18 18:57:28,768 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-04-18 18:57:28,770 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-04-18 18:57:28,772 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-04-18 18:57:28,772 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-04-18 18:57:28,773 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-04-18 18:57:28,773 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-04-18 18:57:28,775 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-04-18 18:57:28,775 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-04-18 18:57:28,776 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-04-18 18:57:28,777 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-04-18 18:57:28,778 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-04-18 18:57:28,778 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-04-18 18:57:28,778 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-04-18 18:57:28,779 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-04-18 18:57:28,779 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-04-18 18:57:28,779 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-04-18 18:57:28,780 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-04-18 18:57:28,782 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-04-18 18:57:28,783 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/config/svcomp-DataRace-32bit-Taipan_Default.epf [2022-04-18 18:57:28,809 INFO L113 SettingsManager]: Loading preferences was successful [2022-04-18 18:57:28,811 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-04-18 18:57:28,812 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-04-18 18:57:28,812 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-04-18 18:57:28,813 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-04-18 18:57:28,813 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-04-18 18:57:28,813 INFO L138 SettingsManager]: * User list type=DISABLED [2022-04-18 18:57:28,813 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-04-18 18:57:28,813 INFO L138 SettingsManager]: * Explicit value domain=true [2022-04-18 18:57:28,814 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-04-18 18:57:28,814 INFO L138 SettingsManager]: * Octagon Domain=false [2022-04-18 18:57:28,814 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-04-18 18:57:28,815 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-04-18 18:57:28,815 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-04-18 18:57:28,815 INFO L138 SettingsManager]: * Interval Domain=false [2022-04-18 18:57:28,815 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-04-18 18:57:28,815 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-04-18 18:57:28,815 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-04-18 18:57:28,817 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-04-18 18:57:28,817 INFO L138 SettingsManager]: * sizeof long=4 [2022-04-18 18:57:28,817 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-04-18 18:57:28,817 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-04-18 18:57:28,818 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-04-18 18:57:28,818 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-04-18 18:57:28,818 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-04-18 18:57:28,818 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-04-18 18:57:28,818 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-04-18 18:57:28,819 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-04-18 18:57:28,819 INFO L138 SettingsManager]: * sizeof long double=12 [2022-04-18 18:57:28,819 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-04-18 18:57:28,819 INFO L138 SettingsManager]: * Use constant arrays=true [2022-04-18 18:57:28,819 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-04-18 18:57:28,820 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-04-18 18:57:28,820 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-04-18 18:57:28,820 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-18 18:57:28,820 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-04-18 18:57:28,820 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-04-18 18:57:28,820 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-04-18 18:57:28,821 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-04-18 18:57:28,821 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-04-18 18:57:28,821 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-04-18 18:57:28,821 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-04-18 18:57:28,821 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-04-18 18:57:28,821 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UTaipan-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 08550a9d023a2de1ac334a3445fa7327c26092d061f764efe50453540d837a7a [2022-04-18 18:57:29,037 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-04-18 18:57:29,057 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-04-18 18:57:29,060 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-04-18 18:57:29,061 INFO L271 PluginConnector]: Initializing CDTParser... [2022-04-18 18:57:29,062 INFO L275 PluginConnector]: CDTParser initialized [2022-04-18 18:57:29,063 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/trunk/examples/svcomp/pthread-divine/condvar.i [2022-04-18 18:57:29,115 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/cf6b4505c/7ba8e8cc71e34a75bb5f2c29894c2c4c/FLAG53024bfa8 [2022-04-18 18:57:29,594 INFO L306 CDTParser]: Found 1 translation units. [2022-04-18 18:57:29,595 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-divine/condvar.i [2022-04-18 18:57:29,612 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/cf6b4505c/7ba8e8cc71e34a75bb5f2c29894c2c4c/FLAG53024bfa8 [2022-04-18 18:57:29,944 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/cf6b4505c/7ba8e8cc71e34a75bb5f2c29894c2c4c [2022-04-18 18:57:29,946 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-04-18 18:57:29,947 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-04-18 18:57:29,949 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-04-18 18:57:29,949 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-04-18 18:57:29,952 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-04-18 18:57:29,952 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 06:57:29" (1/1) ... [2022-04-18 18:57:29,953 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@677fae22 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:57:29, skipping insertion in model container [2022-04-18 18:57:29,953 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 06:57:29" (1/1) ... [2022-04-18 18:57:29,959 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-04-18 18:57:29,984 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-04-18 18:57:30,076 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-04-18 18:57:30,262 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-divine/condvar.i[30458,30471] [2022-04-18 18:57:30,270 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-18 18:57:30,283 INFO L203 MainTranslator]: Completed pre-run [2022-04-18 18:57:30,304 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-04-18 18:57:30,321 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-divine/condvar.i[30458,30471] [2022-04-18 18:57:30,325 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-18 18:57:30,359 INFO L208 MainTranslator]: Completed translation [2022-04-18 18:57:30,361 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:57:30 WrapperNode [2022-04-18 18:57:30,361 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-04-18 18:57:30,363 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-04-18 18:57:30,363 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-04-18 18:57:30,363 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-04-18 18:57:30,370 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:57:30" (1/1) ... [2022-04-18 18:57:30,392 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:57:30" (1/1) ... [2022-04-18 18:57:30,410 INFO L137 Inliner]: procedures = 169, calls = 35, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 69 [2022-04-18 18:57:30,411 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-04-18 18:57:30,412 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-04-18 18:57:30,412 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-04-18 18:57:30,412 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-04-18 18:57:30,417 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:57:30" (1/1) ... [2022-04-18 18:57:30,417 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:57:30" (1/1) ... [2022-04-18 18:57:30,420 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:57:30" (1/1) ... [2022-04-18 18:57:30,420 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:57:30" (1/1) ... [2022-04-18 18:57:30,426 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:57:30" (1/1) ... [2022-04-18 18:57:30,437 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:57:30" (1/1) ... [2022-04-18 18:57:30,439 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:57:30" (1/1) ... [2022-04-18 18:57:30,441 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-04-18 18:57:30,442 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-04-18 18:57:30,442 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-04-18 18:57:30,442 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-04-18 18:57:30,443 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:57:30" (1/1) ... [2022-04-18 18:57:30,455 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-18 18:57:30,462 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 [2022-04-18 18:57:30,472 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 18:57:30,478 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 18:57:30,506 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-04-18 18:57:30,506 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-04-18 18:57:30,506 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-04-18 18:57:30,506 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-04-18 18:57:30,506 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-04-18 18:57:30,506 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-04-18 18:57:30,507 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-04-18 18:57:30,507 INFO L130 BoogieDeclarations]: Found specification of procedure thread [2022-04-18 18:57:30,507 INFO L138 BoogieDeclarations]: Found implementation of procedure thread [2022-04-18 18:57:30,507 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-04-18 18:57:30,507 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-04-18 18:57:30,508 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 18:57:30,590 INFO L234 CfgBuilder]: Building ICFG [2022-04-18 18:57:30,591 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-04-18 18:57:30,777 INFO L275 CfgBuilder]: Performing block encoding [2022-04-18 18:57:30,784 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-04-18 18:57:30,789 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-04-18 18:57:30,791 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 06:57:30 BoogieIcfgContainer [2022-04-18 18:57:30,791 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-04-18 18:57:30,795 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-04-18 18:57:30,795 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-04-18 18:57:30,798 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-04-18 18:57:30,798 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 06:57:29" (1/3) ... [2022-04-18 18:57:30,799 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fd734a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 06:57:30, skipping insertion in model container [2022-04-18 18:57:30,799 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:57:30" (2/3) ... [2022-04-18 18:57:30,800 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fd734a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 06:57:30, skipping insertion in model container [2022-04-18 18:57:30,800 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 06:57:30" (3/3) ... [2022-04-18 18:57:30,801 INFO L111 eAbstractionObserver]: Analyzing ICFG condvar.i [2022-04-18 18:57:30,805 WARN L147 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-04-18 18:57:30,806 INFO L202 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-04-18 18:57:30,806 INFO L161 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2022-04-18 18:57:30,806 INFO L504 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-04-18 18:57:30,843 INFO L135 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-04-18 18:57:30,881 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-18 18:57:30,886 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 18:57:30,886 INFO L341 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2022-04-18 18:57:30,897 INFO L116 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-04-18 18:57:30,908 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 98 places, 99 transitions, 206 flow [2022-04-18 18:57:30,910 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 98 places, 99 transitions, 206 flow [2022-04-18 18:57:30,911 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 98 places, 99 transitions, 206 flow [2022-04-18 18:57:30,965 INFO L129 PetriNetUnfolder]: 5/98 cut-off events. [2022-04-18 18:57:30,966 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-04-18 18:57:30,971 INFO L84 FinitePrefix]: Finished finitePrefix Result has 103 conditions, 98 events. 5/98 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 119 event pairs, 0 based on Foata normal form. 0/88 useless extension candidates. Maximal degree in co-relation 49. Up to 2 conditions per place. [2022-04-18 18:57:30,974 INFO L116 LiptonReduction]: Number of co-enabled transitions 1176 [2022-04-18 18:57:33,761 INFO L131 LiptonReduction]: Checked pairs total: 2702 [2022-04-18 18:57:33,761 INFO L133 LiptonReduction]: Total number of compositions: 84 [2022-04-18 18:57:33,768 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 26 places, 26 transitions, 60 flow [2022-04-18 18:57:33,790 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 90 states, 79 states have (on average 2.4936708860759493) internal successors, (197), 89 states have internal predecessors, (197), 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 18:57:33,792 INFO L276 IsEmpty]: Start isEmpty. Operand has 90 states, 79 states have (on average 2.4936708860759493) internal successors, (197), 89 states have internal predecessors, (197), 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 18:57:33,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-04-18 18:57:33,795 INFO L491 BasicCegarLoop]: Found error trace [2022-04-18 18:57:33,796 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2022-04-18 18:57:33,796 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 5 more)] === [2022-04-18 18:57:33,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 18:57:33,801 INFO L85 PathProgramCache]: Analyzing trace with hash 10906901, now seen corresponding path program 1 times [2022-04-18 18:57:33,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-04-18 18:57:33,809 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480329129] [2022-04-18 18:57:33,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 18:57:33,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 18:57:33,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 18:57:33,941 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 18:57:33,942 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-04-18 18:57:33,942 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480329129] [2022-04-18 18:57:33,943 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [480329129] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 18:57:33,943 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 18:57:33,943 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-04-18 18:57:33,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657185276] [2022-04-18 18:57:33,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 18:57:33,948 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-04-18 18:57:33,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-04-18 18:57:33,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-04-18 18:57:33,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-04-18 18:57:33,967 INFO L87 Difference]: Start difference. First operand has 90 states, 79 states have (on average 2.4936708860759493) internal successors, (197), 89 states have internal predecessors, (197), 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 4.0) internal successors, (4), 2 states have internal predecessors, (4), 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 18:57:33,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-18 18:57:33,998 INFO L93 Difference]: Finished difference Result 81 states and 160 transitions. [2022-04-18 18:57:33,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-04-18 18:57:34,000 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 4.0) internal successors, (4), 2 states have internal predecessors, (4), 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 4 [2022-04-18 18:57:34,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-18 18:57:34,008 INFO L225 Difference]: With dead ends: 81 [2022-04-18 18:57:34,008 INFO L226 Difference]: Without dead ends: 81 [2022-04-18 18:57:34,009 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 1 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 18:57:34,011 INFO L913 BasicCegarLoop]: 7 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-18 18:57:34,012 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 7 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-18 18:57:34,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2022-04-18 18:57:34,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2022-04-18 18:57:34,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 73 states have (on average 2.191780821917808) internal successors, (160), 80 states have internal predecessors, (160), 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 18:57:34,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 160 transitions. [2022-04-18 18:57:34,043 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 160 transitions. Word has length 4 [2022-04-18 18:57:34,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-18 18:57:34,044 INFO L478 AbstractCegarLoop]: Abstraction has 81 states and 160 transitions. [2022-04-18 18:57:34,044 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 4.0) internal successors, (4), 2 states have internal predecessors, (4), 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 18:57:34,044 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 160 transitions. [2022-04-18 18:57:34,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-04-18 18:57:34,045 INFO L491 BasicCegarLoop]: Found error trace [2022-04-18 18:57:34,045 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-04-18 18:57:34,045 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-04-18 18:57:34,045 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting threadErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 5 more)] === [2022-04-18 18:57:34,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 18:57:34,046 INFO L85 PathProgramCache]: Analyzing trace with hash 338126371, now seen corresponding path program 1 times [2022-04-18 18:57:34,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-04-18 18:57:34,047 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055479261] [2022-04-18 18:57:34,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 18:57:34,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 18:57:34,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 18:57:34,110 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 18:57:34,110 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-04-18 18:57:34,110 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1055479261] [2022-04-18 18:57:34,111 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1055479261] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 18:57:34,111 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 18:57:34,111 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 18:57:34,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50199891] [2022-04-18 18:57:34,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 18:57:34,112 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 18:57:34,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-04-18 18:57:34,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 18:57:34,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 18:57:34,114 INFO L87 Difference]: Start difference. First operand 81 states and 160 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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 18:57:34,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-18 18:57:34,165 INFO L93 Difference]: Finished difference Result 100 states and 191 transitions. [2022-04-18 18:57:34,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 18:57:34,166 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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 5 [2022-04-18 18:57:34,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-18 18:57:34,168 INFO L225 Difference]: With dead ends: 100 [2022-04-18 18:57:34,168 INFO L226 Difference]: Without dead ends: 100 [2022-04-18 18:57:34,170 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 18:57:34,171 INFO L913 BasicCegarLoop]: 8 mSDtfsCounter, 14 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-18 18:57:34,172 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [14 Valid, 11 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-18 18:57:34,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2022-04-18 18:57:34,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 78. [2022-04-18 18:57:34,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 71 states have (on average 2.183098591549296) internal successors, (155), 77 states have internal predecessors, (155), 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 18:57:34,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 155 transitions. [2022-04-18 18:57:34,190 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 155 transitions. Word has length 5 [2022-04-18 18:57:34,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-18 18:57:34,190 INFO L478 AbstractCegarLoop]: Abstraction has 78 states and 155 transitions. [2022-04-18 18:57:34,191 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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 18:57:34,191 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 155 transitions. [2022-04-18 18:57:34,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-04-18 18:57:34,192 INFO L491 BasicCegarLoop]: Found error trace [2022-04-18 18:57:34,192 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-04-18 18:57:34,192 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-04-18 18:57:34,192 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 5 more)] === [2022-04-18 18:57:34,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 18:57:34,194 INFO L85 PathProgramCache]: Analyzing trace with hash 1891564692, now seen corresponding path program 1 times [2022-04-18 18:57:34,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-04-18 18:57:34,195 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1827320156] [2022-04-18 18:57:34,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 18:57:34,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 18:57:34,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 18:57:34,266 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 18:57:34,267 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-04-18 18:57:34,267 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1827320156] [2022-04-18 18:57:34,268 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1827320156] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 18:57:34,269 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 18:57:34,269 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-18 18:57:34,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571139216] [2022-04-18 18:57:34,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 18:57:34,270 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 18:57:34,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-04-18 18:57:34,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 18:57:34,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 18:57:34,272 INFO L87 Difference]: Start difference. First operand 78 states and 155 transitions. Second operand has 3 states, 3 states have (on average 2.0) 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 18:57:34,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-18 18:57:34,302 INFO L93 Difference]: Finished difference Result 110 states and 219 transitions. [2022-04-18 18:57:34,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 18:57:34,302 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) 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 18:57:34,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-18 18:57:34,305 INFO L225 Difference]: With dead ends: 110 [2022-04-18 18:57:34,306 INFO L226 Difference]: Without dead ends: 110 [2022-04-18 18:57:34,306 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 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 18:57:34,308 INFO L913 BasicCegarLoop]: 11 mSDtfsCounter, 11 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-18 18:57:34,309 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 18 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-18 18:57:34,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2022-04-18 18:57:34,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 86. [2022-04-18 18:57:34,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 79 states have (on average 2.1645569620253164) internal successors, (171), 85 states have internal predecessors, (171), 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 18:57:34,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 171 transitions. [2022-04-18 18:57:34,323 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 171 transitions. Word has length 6 [2022-04-18 18:57:34,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-18 18:57:34,323 INFO L478 AbstractCegarLoop]: Abstraction has 86 states and 171 transitions. [2022-04-18 18:57:34,323 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) 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 18:57:34,324 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 171 transitions. [2022-04-18 18:57:34,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-04-18 18:57:34,324 INFO L491 BasicCegarLoop]: Found error trace [2022-04-18 18:57:34,324 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-04-18 18:57:34,325 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-04-18 18:57:34,326 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 5 more)] === [2022-04-18 18:57:34,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 18:57:34,326 INFO L85 PathProgramCache]: Analyzing trace with hash 1891534061, now seen corresponding path program 1 times [2022-04-18 18:57:34,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-04-18 18:57:34,327 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806609364] [2022-04-18 18:57:34,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 18:57:34,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 18:57:34,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 18:57:34,378 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 18:57:34,379 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-04-18 18:57:34,379 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806609364] [2022-04-18 18:57:34,379 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1806609364] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 18:57:34,380 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 18:57:34,380 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 18:57:34,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534366488] [2022-04-18 18:57:34,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 18:57:34,381 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 18:57:34,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-04-18 18:57:34,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 18:57:34,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 18:57:34,382 INFO L87 Difference]: Start difference. First operand 86 states and 171 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 18:57:34,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-18 18:57:34,406 INFO L93 Difference]: Finished difference Result 86 states and 169 transitions. [2022-04-18 18:57:34,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 18:57:34,406 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 18:57:34,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-18 18:57:34,407 INFO L225 Difference]: With dead ends: 86 [2022-04-18 18:57:34,407 INFO L226 Difference]: Without dead ends: 86 [2022-04-18 18:57:34,407 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 18:57:34,408 INFO L913 BasicCegarLoop]: 9 mSDtfsCounter, 7 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-18 18:57:34,409 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 13 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-18 18:57:34,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2022-04-18 18:57:34,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2022-04-18 18:57:34,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 79 states have (on average 2.1392405063291138) internal successors, (169), 85 states have internal predecessors, (169), 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 18:57:34,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 169 transitions. [2022-04-18 18:57:34,414 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 169 transitions. Word has length 6 [2022-04-18 18:57:34,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-18 18:57:34,414 INFO L478 AbstractCegarLoop]: Abstraction has 86 states and 169 transitions. [2022-04-18 18:57:34,415 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 18:57:34,415 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 169 transitions. [2022-04-18 18:57:34,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-04-18 18:57:34,415 INFO L491 BasicCegarLoop]: Found error trace [2022-04-18 18:57:34,415 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-04-18 18:57:34,415 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-04-18 18:57:34,415 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting threadErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 5 more)] === [2022-04-18 18:57:34,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 18:57:34,416 INFO L85 PathProgramCache]: Analyzing trace with hash -1478062096, now seen corresponding path program 1 times [2022-04-18 18:57:34,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-04-18 18:57:34,416 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1231666392] [2022-04-18 18:57:34,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 18:57:34,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 18:57:34,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 18:57:34,443 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 18:57:34,443 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-04-18 18:57:34,443 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1231666392] [2022-04-18 18:57:34,443 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1231666392] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 18:57:34,443 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 18:57:34,443 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 18:57:34,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179087649] [2022-04-18 18:57:34,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 18:57:34,444 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 18:57:34,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-04-18 18:57:34,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 18:57:34,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 18:57:34,445 INFO L87 Difference]: Start difference. First operand 86 states and 169 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 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 18:57:34,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-18 18:57:34,470 INFO L93 Difference]: Finished difference Result 100 states and 190 transitions. [2022-04-18 18:57:34,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 18:57:34,471 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 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 7 [2022-04-18 18:57:34,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-18 18:57:34,472 INFO L225 Difference]: With dead ends: 100 [2022-04-18 18:57:34,472 INFO L226 Difference]: Without dead ends: 95 [2022-04-18 18:57:34,472 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 18:57:34,473 INFO L913 BasicCegarLoop]: 6 mSDtfsCounter, 10 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-18 18:57:34,473 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 10 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-18 18:57:34,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2022-04-18 18:57:34,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 83. [2022-04-18 18:57:34,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 77 states have (on average 2.0779220779220777) internal successors, (160), 82 states have internal predecessors, (160), 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 18:57:34,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 160 transitions. [2022-04-18 18:57:34,478 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 160 transitions. Word has length 7 [2022-04-18 18:57:34,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-18 18:57:34,478 INFO L478 AbstractCegarLoop]: Abstraction has 83 states and 160 transitions. [2022-04-18 18:57:34,478 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 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 18:57:34,478 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 160 transitions. [2022-04-18 18:57:34,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-04-18 18:57:34,479 INFO L491 BasicCegarLoop]: Found error trace [2022-04-18 18:57:34,479 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 18:57:34,479 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-04-18 18:57:34,479 INFO L403 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 5 more)] === [2022-04-18 18:57:34,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 18:57:34,480 INFO L85 PathProgramCache]: Analyzing trace with hash 726079775, now seen corresponding path program 1 times [2022-04-18 18:57:34,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-04-18 18:57:34,480 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234437694] [2022-04-18 18:57:34,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 18:57:34,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 18:57:34,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 18:57:34,527 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-18 18:57:34,528 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-04-18 18:57:34,528 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1234437694] [2022-04-18 18:57:34,528 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1234437694] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-18 18:57:34,528 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [847893711] [2022-04-18 18:57:34,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 18:57:34,528 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-18 18:57:34,528 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 [2022-04-18 18:57:34,535 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-18 18:57:34,542 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-04-18 18:57:34,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 18:57:34,607 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 3 conjunts are in the unsatisfiable core [2022-04-18 18:57:34,610 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-18 18:57:34,629 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-04-18 18:57:34,630 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-18 18:57:34,630 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [847893711] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 18:57:34,630 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-18 18:57:34,630 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2022-04-18 18:57:34,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273793864] [2022-04-18 18:57:34,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 18:57:34,631 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 18:57:34,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-04-18 18:57:34,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 18:57:34,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-04-18 18:57:34,632 INFO L87 Difference]: Start difference. First operand 83 states and 160 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 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 18:57:34,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-18 18:57:34,670 INFO L93 Difference]: Finished difference Result 83 states and 153 transitions. [2022-04-18 18:57:34,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 18:57:34,670 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 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 9 [2022-04-18 18:57:34,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-18 18:57:34,671 INFO L225 Difference]: With dead ends: 83 [2022-04-18 18:57:34,671 INFO L226 Difference]: Without dead ends: 65 [2022-04-18 18:57:34,672 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-04-18 18:57:34,688 INFO L913 BasicCegarLoop]: 9 mSDtfsCounter, 8 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-18 18:57:34,688 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 12 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-18 18:57:34,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2022-04-18 18:57:34,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 63. [2022-04-18 18:57:34,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 59 states have (on average 1.8305084745762712) internal successors, (108), 62 states have internal predecessors, (108), 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 18:57:34,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 108 transitions. [2022-04-18 18:57:34,692 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 108 transitions. Word has length 9 [2022-04-18 18:57:34,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-18 18:57:34,693 INFO L478 AbstractCegarLoop]: Abstraction has 63 states and 108 transitions. [2022-04-18 18:57:34,693 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 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 18:57:34,693 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 108 transitions. [2022-04-18 18:57:34,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-04-18 18:57:34,693 INFO L491 BasicCegarLoop]: Found error trace [2022-04-18 18:57:34,694 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 18:57:34,742 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-04-18 18:57:34,913 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-04-18 18:57:34,913 INFO L403 AbstractCegarLoop]: === Iteration 7 === Targeting threadErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 5 more)] === [2022-04-18 18:57:34,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 18:57:34,914 INFO L85 PathProgramCache]: Analyzing trace with hash -941235076, now seen corresponding path program 1 times [2022-04-18 18:57:34,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-04-18 18:57:34,914 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1977202050] [2022-04-18 18:57:34,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 18:57:34,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 18:57:34,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 18:57:34,941 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 18:57:34,941 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-04-18 18:57:34,941 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1977202050] [2022-04-18 18:57:34,942 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1977202050] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 18:57:34,942 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 18:57:34,942 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 18:57:34,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334996798] [2022-04-18 18:57:34,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 18:57:34,943 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 18:57:34,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-04-18 18:57:34,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 18:57:34,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 18:57:34,944 INFO L87 Difference]: Start difference. First operand 63 states and 108 transitions. Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 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 18:57:34,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-18 18:57:34,960 INFO L93 Difference]: Finished difference Result 42 states and 75 transitions. [2022-04-18 18:57:34,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 18:57:34,960 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 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 10 [2022-04-18 18:57:34,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-18 18:57:34,961 INFO L225 Difference]: With dead ends: 42 [2022-04-18 18:57:34,961 INFO L226 Difference]: Without dead ends: 38 [2022-04-18 18:57:34,961 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 18:57:34,962 INFO L913 BasicCegarLoop]: 5 mSDtfsCounter, 5 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-18 18:57:34,962 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 10 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-18 18:57:34,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2022-04-18 18:57:34,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2022-04-18 18:57:34,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 36 states have (on average 1.8333333333333333) internal successors, (66), 37 states have internal predecessors, (66), 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 18:57:34,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 66 transitions. [2022-04-18 18:57:34,965 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 66 transitions. Word has length 10 [2022-04-18 18:57:34,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-18 18:57:34,965 INFO L478 AbstractCegarLoop]: Abstraction has 38 states and 66 transitions. [2022-04-18 18:57:34,966 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 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 18:57:34,966 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 66 transitions. [2022-04-18 18:57:34,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-04-18 18:57:34,966 INFO L491 BasicCegarLoop]: Found error trace [2022-04-18 18:57:34,966 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 18:57:34,967 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-04-18 18:57:34,967 INFO L403 AbstractCegarLoop]: === Iteration 8 === Targeting threadErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 5 more)] === [2022-04-18 18:57:34,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 18:57:34,968 INFO L85 PathProgramCache]: Analyzing trace with hash -9165874, now seen corresponding path program 1 times [2022-04-18 18:57:34,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-04-18 18:57:34,968 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884133051] [2022-04-18 18:57:34,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 18:57:34,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 18:57:34,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 18:57:34,995 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-18 18:57:34,995 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-04-18 18:57:34,995 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884133051] [2022-04-18 18:57:34,996 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1884133051] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-18 18:57:34,996 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [172026620] [2022-04-18 18:57:34,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 18:57:34,996 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-18 18:57:34,996 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 [2022-04-18 18:57:34,997 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-18 18:57:35,014 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-04-18 18:57:35,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 18:57:35,074 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 3 conjunts are in the unsatisfiable core [2022-04-18 18:57:35,075 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-18 18:57:35,124 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-18 18:57:35,124 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-18 18:57:35,168 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-18 18:57:35,168 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [172026620] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-18 18:57:35,169 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [873465756] [2022-04-18 18:57:35,175 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:295) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:270) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1603) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:497) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:235) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:112) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:91) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:595) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:414) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:349) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:331) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:411) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:301) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:224) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:172) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:153) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-04-18 18:57:35,182 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-18 18:57:35,182 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2022-04-18 18:57:35,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840400128] [2022-04-18 18:57:35,182 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-18 18:57:35,183 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-04-18 18:57:35,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-04-18 18:57:35,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-04-18 18:57:35,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-04-18 18:57:35,185 INFO L87 Difference]: Start difference. First operand 38 states and 66 transitions. Second operand has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 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 18:57:35,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-18 18:57:35,243 INFO L93 Difference]: Finished difference Result 65 states and 120 transitions. [2022-04-18 18:57:35,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-04-18 18:57:35,244 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 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 11 [2022-04-18 18:57:35,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-18 18:57:35,245 INFO L225 Difference]: With dead ends: 65 [2022-04-18 18:57:35,246 INFO L226 Difference]: Without dead ends: 65 [2022-04-18 18:57:35,248 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-04-18 18:57:35,249 INFO L913 BasicCegarLoop]: 6 mSDtfsCounter, 26 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-18 18:57:35,249 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [26 Valid, 24 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-18 18:57:35,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2022-04-18 18:57:35,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2022-04-18 18:57:35,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 63 states have (on average 1.9047619047619047) internal successors, (120), 64 states have internal predecessors, (120), 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 18:57:35,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 120 transitions. [2022-04-18 18:57:35,262 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 120 transitions. Word has length 11 [2022-04-18 18:57:35,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-18 18:57:35,262 INFO L478 AbstractCegarLoop]: Abstraction has 65 states and 120 transitions. [2022-04-18 18:57:35,262 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 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 18:57:35,263 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 120 transitions. [2022-04-18 18:57:35,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-04-18 18:57:35,264 INFO L491 BasicCegarLoop]: Found error trace [2022-04-18 18:57:35,265 INFO L499 BasicCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 18:57:35,289 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-04-18 18:57:35,487 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-18 18:57:35,488 INFO L403 AbstractCegarLoop]: === Iteration 9 === Targeting threadErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 5 more)] === [2022-04-18 18:57:35,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 18:57:35,488 INFO L85 PathProgramCache]: Analyzing trace with hash -563412599, now seen corresponding path program 2 times [2022-04-18 18:57:35,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-04-18 18:57:35,488 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148441001] [2022-04-18 18:57:35,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 18:57:35,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 18:57:35,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 18:57:35,535 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-18 18:57:35,536 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-04-18 18:57:35,536 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1148441001] [2022-04-18 18:57:35,536 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1148441001] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-18 18:57:35,536 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [689964981] [2022-04-18 18:57:35,536 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-04-18 18:57:35,536 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-18 18:57:35,536 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 [2022-04-18 18:57:35,537 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-18 18:57:35,539 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-04-18 18:57:35,598 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-04-18 18:57:35,598 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-18 18:57:35,599 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 6 conjunts are in the unsatisfiable core [2022-04-18 18:57:35,600 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-18 18:57:35,637 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-18 18:57:35,638 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-18 18:57:35,700 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-18 18:57:35,701 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [689964981] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-18 18:57:35,701 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1194967067] [2022-04-18 18:57:35,701 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:295) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:270) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1603) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:497) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:235) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:112) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:91) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:595) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:414) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:349) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:331) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:411) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:301) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:224) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:172) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:153) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-04-18 18:57:35,701 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-18 18:57:35,701 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2022-04-18 18:57:35,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569450020] [2022-04-18 18:57:35,702 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-18 18:57:35,702 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-04-18 18:57:35,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-04-18 18:57:35,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-04-18 18:57:35,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2022-04-18 18:57:35,703 INFO L87 Difference]: Start difference. First operand 65 states and 120 transitions. Second operand has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 13 states have internal predecessors, (38), 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 18:57:35,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-18 18:57:35,772 INFO L93 Difference]: Finished difference Result 119 states and 228 transitions. [2022-04-18 18:57:35,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-04-18 18:57:35,773 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 13 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-04-18 18:57:35,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-18 18:57:35,774 INFO L225 Difference]: With dead ends: 119 [2022-04-18 18:57:35,774 INFO L226 Difference]: Without dead ends: 119 [2022-04-18 18:57:35,774 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2022-04-18 18:57:35,775 INFO L913 BasicCegarLoop]: 6 mSDtfsCounter, 83 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-18 18:57:35,775 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [83 Valid, 30 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-18 18:57:35,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2022-04-18 18:57:35,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 119. [2022-04-18 18:57:35,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 117 states have (on average 1.9487179487179487) internal successors, (228), 118 states have internal predecessors, (228), 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 18:57:35,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 228 transitions. [2022-04-18 18:57:35,781 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 228 transitions. Word has length 20 [2022-04-18 18:57:35,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-18 18:57:35,781 INFO L478 AbstractCegarLoop]: Abstraction has 119 states and 228 transitions. [2022-04-18 18:57:35,781 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 13 states have internal predecessors, (38), 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 18:57:35,781 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 228 transitions. [2022-04-18 18:57:35,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-04-18 18:57:35,782 INFO L491 BasicCegarLoop]: Found error trace [2022-04-18 18:57:35,782 INFO L499 BasicCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 18:57:35,810 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-04-18 18:57:36,001 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-04-18 18:57:36,002 INFO L403 AbstractCegarLoop]: === Iteration 10 === Targeting threadErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 5 more)] === [2022-04-18 18:57:36,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 18:57:36,002 INFO L85 PathProgramCache]: Analyzing trace with hash -338597079, now seen corresponding path program 3 times [2022-04-18 18:57:36,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-04-18 18:57:36,002 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018870709] [2022-04-18 18:57:36,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 18:57:36,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 18:57:36,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 18:57:36,156 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-18 18:57:36,157 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-04-18 18:57:36,157 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018870709] [2022-04-18 18:57:36,157 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1018870709] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-18 18:57:36,157 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1284368852] [2022-04-18 18:57:36,158 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-04-18 18:57:36,158 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-18 18:57:36,158 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 [2022-04-18 18:57:36,159 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-18 18:57:36,172 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-04-18 18:57:36,256 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-04-18 18:57:36,257 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-18 18:57:36,258 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 12 conjunts are in the unsatisfiable core [2022-04-18 18:57:36,261 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-18 18:57:36,349 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-18 18:57:36,349 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-18 18:57:36,573 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-18 18:57:36,574 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1284368852] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-18 18:57:36,574 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [828958950] [2022-04-18 18:57:36,574 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:295) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:270) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1603) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:497) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:235) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:112) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:91) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:595) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:414) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:349) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:331) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:411) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:301) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:224) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:172) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:153) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-04-18 18:57:36,575 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-18 18:57:36,575 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 25 [2022-04-18 18:57:36,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660774415] [2022-04-18 18:57:36,575 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-18 18:57:36,575 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-04-18 18:57:36,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-04-18 18:57:36,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-04-18 18:57:36,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2022-04-18 18:57:36,576 INFO L87 Difference]: Start difference. First operand 119 states and 228 transitions. Second operand has 25 states, 25 states have (on average 2.96) internal successors, (74), 25 states have internal predecessors, (74), 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 18:57:36,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-18 18:57:36,710 INFO L93 Difference]: Finished difference Result 227 states and 444 transitions. [2022-04-18 18:57:36,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-04-18 18:57:36,711 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.96) internal successors, (74), 25 states have internal predecessors, (74), 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 38 [2022-04-18 18:57:36,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-18 18:57:36,712 INFO L225 Difference]: With dead ends: 227 [2022-04-18 18:57:36,712 INFO L226 Difference]: Without dead ends: 227 [2022-04-18 18:57:36,712 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2022-04-18 18:57:36,713 INFO L913 BasicCegarLoop]: 6 mSDtfsCounter, 312 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 312 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-18 18:57:36,713 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [312 Valid, 42 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-18 18:57:36,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2022-04-18 18:57:36,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 227. [2022-04-18 18:57:36,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227 states, 225 states have (on average 1.9733333333333334) internal successors, (444), 226 states have internal predecessors, (444), 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 18:57:36,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 444 transitions. [2022-04-18 18:57:36,719 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 444 transitions. Word has length 38 [2022-04-18 18:57:36,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-18 18:57:36,719 INFO L478 AbstractCegarLoop]: Abstraction has 227 states and 444 transitions. [2022-04-18 18:57:36,719 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.96) internal successors, (74), 25 states have internal predecessors, (74), 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 18:57:36,719 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 444 transitions. [2022-04-18 18:57:36,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-04-18 18:57:36,721 INFO L491 BasicCegarLoop]: Found error trace [2022-04-18 18:57:36,722 INFO L499 BasicCegarLoop]: trace histogram [22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 18:57:36,750 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-04-18 18:57:36,948 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-18 18:57:36,948 INFO L403 AbstractCegarLoop]: === Iteration 11 === Targeting threadErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 5 more)] === [2022-04-18 18:57:36,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 18:57:36,948 INFO L85 PathProgramCache]: Analyzing trace with hash 156681833, now seen corresponding path program 4 times [2022-04-18 18:57:36,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-04-18 18:57:36,949 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765438035] [2022-04-18 18:57:36,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 18:57:36,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 18:57:36,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 18:57:37,222 INFO L134 CoverageAnalysis]: Checked inductivity of 715 backedges. 0 proven. 715 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-18 18:57:37,223 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-04-18 18:57:37,223 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1765438035] [2022-04-18 18:57:37,223 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1765438035] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-18 18:57:37,223 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2110863114] [2022-04-18 18:57:37,223 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-04-18 18:57:37,223 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-18 18:57:37,223 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 [2022-04-18 18:57:37,232 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-18 18:57:37,235 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-04-18 18:57:37,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 18:57:37,316 INFO L263 TraceCheckSpWp]: Trace formula consists of 324 conjuncts, 24 conjunts are in the unsatisfiable core [2022-04-18 18:57:37,318 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-18 18:57:37,507 INFO L134 CoverageAnalysis]: Checked inductivity of 715 backedges. 0 proven. 715 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-18 18:57:37,508 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-18 18:57:38,086 INFO L134 CoverageAnalysis]: Checked inductivity of 715 backedges. 0 proven. 715 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-18 18:57:38,086 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2110863114] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-18 18:57:38,086 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1078825894] [2022-04-18 18:57:38,087 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:295) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:270) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1603) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:497) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:235) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:112) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:91) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:595) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:414) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:349) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:331) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:411) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:301) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:224) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:172) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:153) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-04-18 18:57:38,087 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-18 18:57:38,087 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 46 [2022-04-18 18:57:38,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019457912] [2022-04-18 18:57:38,087 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-18 18:57:38,088 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-04-18 18:57:38,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-04-18 18:57:38,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-04-18 18:57:38,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1035, Invalid=1035, Unknown=0, NotChecked=0, Total=2070 [2022-04-18 18:57:38,089 INFO L87 Difference]: Start difference. First operand 227 states and 444 transitions. Second operand has 46 states, 46 states have (on average 3.0434782608695654) internal successors, (140), 46 states have internal predecessors, (140), 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 18:57:38,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-18 18:57:38,408 INFO L93 Difference]: Finished difference Result 416 states and 822 transitions. [2022-04-18 18:57:38,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-04-18 18:57:38,409 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 3.0434782608695654) internal successors, (140), 46 states have internal predecessors, (140), 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 74 [2022-04-18 18:57:38,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-18 18:57:38,413 INFO L225 Difference]: With dead ends: 416 [2022-04-18 18:57:38,413 INFO L226 Difference]: Without dead ends: 416 [2022-04-18 18:57:38,414 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=1035, Invalid=1035, Unknown=0, NotChecked=0, Total=2070 [2022-04-18 18:57:38,415 INFO L913 BasicCegarLoop]: 6 mSDtfsCounter, 563 mSDsluCounter, 208 mSDsCounter, 0 mSdLazyCounter, 258 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 563 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-04-18 18:57:38,415 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [563 Valid, 64 Invalid, 263 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 258 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-04-18 18:57:38,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 416 states. [2022-04-18 18:57:38,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 416 to 416. [2022-04-18 18:57:38,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 416 states, 414 states have (on average 1.9855072463768115) internal successors, (822), 415 states have internal predecessors, (822), 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 18:57:38,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 416 states to 416 states and 822 transitions. [2022-04-18 18:57:38,425 INFO L78 Accepts]: Start accepts. Automaton has 416 states and 822 transitions. Word has length 74 [2022-04-18 18:57:38,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-18 18:57:38,426 INFO L478 AbstractCegarLoop]: Abstraction has 416 states and 822 transitions. [2022-04-18 18:57:38,426 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 3.0434782608695654) internal successors, (140), 46 states have internal predecessors, (140), 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 18:57:38,426 INFO L276 IsEmpty]: Start isEmpty. Operand 416 states and 822 transitions. [2022-04-18 18:57:38,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2022-04-18 18:57:38,430 INFO L491 BasicCegarLoop]: Found error trace [2022-04-18 18:57:38,431 INFO L499 BasicCegarLoop]: trace histogram [43, 43, 43, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 18:57:38,455 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-04-18 18:57:38,647 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,6 /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-18 18:57:38,648 INFO L403 AbstractCegarLoop]: === Iteration 12 === Targeting threadErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 5 more)] === [2022-04-18 18:57:38,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 18:57:38,648 INFO L85 PathProgramCache]: Analyzing trace with hash 879049838, now seen corresponding path program 5 times [2022-04-18 18:57:38,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-04-18 18:57:38,648 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [540211362] [2022-04-18 18:57:38,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 18:57:38,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 18:57:38,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-18 18:57:38,705 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-04-18 18:57:38,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-18 18:57:38,779 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-04-18 18:57:38,780 INFO L618 BasicCegarLoop]: Counterexample is feasible [2022-04-18 18:57:38,780 INFO L788 garLoopResultBuilder]: Registering result UNSAFE for location threadErr0ASSERT_VIOLATIONDATA_RACE (7 of 8 remaining) [2022-04-18 18:57:38,782 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (6 of 8 remaining) [2022-04-18 18:57:38,782 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (5 of 8 remaining) [2022-04-18 18:57:38,782 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (4 of 8 remaining) [2022-04-18 18:57:38,783 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 8 remaining) [2022-04-18 18:57:38,783 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (2 of 8 remaining) [2022-04-18 18:57:38,783 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr1ASSERT_VIOLATIONDATA_RACE (1 of 8 remaining) [2022-04-18 18:57:38,783 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr1ASSERT_VIOLATIONDATA_RACE (0 of 8 remaining) [2022-04-18 18:57:38,783 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-04-18 18:57:38,785 INFO L719 BasicCegarLoop]: Path program histogram: [5, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 18:57:38,789 INFO L227 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-04-18 18:57:38,790 INFO L177 ceAbstractionStarter]: Computing trace abstraction results [2022-04-18 18:57:38,882 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.04 06:57:38 BasicIcfg [2022-04-18 18:57:38,885 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-04-18 18:57:38,886 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-04-18 18:57:38,886 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-04-18 18:57:38,886 INFO L275 PluginConnector]: Witness Printer initialized [2022-04-18 18:57:38,887 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 06:57:30" (3/4) ... [2022-04-18 18:57:38,889 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-04-18 18:57:38,889 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-04-18 18:57:38,890 INFO L158 Benchmark]: Toolchain (without parser) took 8942.23ms. Allocated memory was 98.6MB in the beginning and 121.6MB in the end (delta: 23.1MB). Free memory was 59.3MB in the beginning and 37.5MB in the end (delta: 21.8MB). Peak memory consumption was 46.6MB. Max. memory is 16.1GB. [2022-04-18 18:57:38,890 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 98.6MB. Free memory is still 76.7MB. There was no memory consumed. Max. memory is 16.1GB. [2022-04-18 18:57:38,890 INFO L158 Benchmark]: CACSL2BoogieTranslator took 413.26ms. Allocated memory is still 98.6MB. Free memory was 59.1MB in the beginning and 68.0MB in the end (delta: -8.9MB). Peak memory consumption was 11.0MB. Max. memory is 16.1GB. [2022-04-18 18:57:38,890 INFO L158 Benchmark]: Boogie Procedure Inliner took 48.05ms. Allocated memory is still 98.6MB. Free memory was 68.0MB in the beginning and 65.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-04-18 18:57:38,891 INFO L158 Benchmark]: Boogie Preprocessor took 29.48ms. Allocated memory is still 98.6MB. Free memory was 65.9MB in the beginning and 64.8MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-04-18 18:57:38,891 INFO L158 Benchmark]: RCFGBuilder took 349.86ms. Allocated memory is still 98.6MB. Free memory was 64.8MB in the beginning and 51.7MB in the end (delta: 13.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-04-18 18:57:38,891 INFO L158 Benchmark]: TraceAbstraction took 8090.65ms. Allocated memory was 98.6MB in the beginning and 121.6MB in the end (delta: 23.1MB). Free memory was 51.2MB in the beginning and 38.6MB in the end (delta: 12.6MB). Peak memory consumption was 37.7MB. Max. memory is 16.1GB. [2022-04-18 18:57:38,892 INFO L158 Benchmark]: Witness Printer took 3.46ms. Allocated memory is still 121.6MB. Free memory was 38.6MB in the beginning and 37.5MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-04-18 18:57:38,893 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 98.6MB. Free memory is still 76.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 413.26ms. Allocated memory is still 98.6MB. Free memory was 59.1MB in the beginning and 68.0MB in the end (delta: -8.9MB). Peak memory consumption was 11.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 48.05ms. Allocated memory is still 98.6MB. Free memory was 68.0MB in the beginning and 65.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 29.48ms. Allocated memory is still 98.6MB. Free memory was 65.9MB in the beginning and 64.8MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 349.86ms. Allocated memory is still 98.6MB. Free memory was 64.8MB in the beginning and 51.7MB in the end (delta: 13.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 8090.65ms. Allocated memory was 98.6MB in the beginning and 121.6MB in the end (delta: 23.1MB). Free memory was 51.2MB in the beginning and 38.6MB in the end (delta: 12.6MB). Peak memory consumption was 37.7MB. Max. memory is 16.1GB. * Witness Printer took 3.46ms. Allocated memory is still 121.6MB. Free memory was 38.6MB in the beginning and 37.5MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.9s, 98 PlacesBefore, 26 PlacesAfterwards, 99 TransitionsBefore, 26 TransitionsAfterwards, 1176 CoEnabledTransitionPairs, 6 FixpointIterations, 45 TrivialSequentialCompositions, 31 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 7 ConcurrentYvCompositions, 1 ChoiceCompositions, 84 TotalNumberOfCompositions, 2702 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1495, positive: 1348, positive conditional: 0, positive unconditional: 1348, negative: 147, negative conditional: 0, negative unconditional: 147, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 879, positive: 844, positive conditional: 0, positive unconditional: 844, negative: 35, negative conditional: 0, negative unconditional: 35, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 879, positive: 833, positive conditional: 0, positive unconditional: 833, negative: 46, negative conditional: 0, negative unconditional: 46, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 46, positive: 11, positive conditional: 0, positive unconditional: 11, negative: 35, negative conditional: 0, negative unconditional: 35, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 71, positive: 21, positive conditional: 0, positive unconditional: 21, negative: 50, negative conditional: 0, negative unconditional: 50, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1495, positive: 504, positive conditional: 0, positive unconditional: 504, negative: 112, negative conditional: 0, negative unconditional: 112, unknown: 879, unknown conditional: 0, unknown unconditional: 879] , Statistics on independence cache: Total cache size (in pairs): 103, Positive cache size: 87, Positive conditional cache size: 0, Positive unconditional cache size: 87, Negative cache size: 16, Negative conditional cache size: 0, Negative unconditional cache size: 16 - 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: 704]: Data race detected Data race detected The following path leads to a data race: [L697] 0 pthread_mutex_t lock; [L698] 0 pthread_cond_t cond; [L699] 0 int x; [L700] 0 _Bool x_set = 0; [L711] 0 pthread_t t; [L712] FCALL, FORK 0 pthread_create( &t, ((void *)0), thread, ((void *)0) ) VAL [arg={0:0}, cond={4:0}, lock={3:0}, pthread_create( &t, ((void *)0), thread, ((void *)0) )=0, t={7:0}, x=0, x_set=0] [L704] 1 !x_set VAL [arg={0:0}, arg={0:0}, cond={4:0}, lock={3:0}, x=0, x_set=0] [L713] 0 int i = 0; VAL [arg={0:0}, arg={0:0}, cond={4:0}, i=0, lock={3:0}, t={7:0}, x=0, x_set=0] [L713] COND TRUE 0 i <= 42 [L714] 0 x = i [L713] 0 i++ VAL [arg={0:0}, arg={0:0}, cond={4:0}, i=1, lock={3:0}, t={7:0}, x=0, x_set=0] [L713] COND TRUE 0 i <= 42 [L714] 0 x = i [L713] 0 i++ VAL [arg={0:0}, arg={0:0}, cond={4:0}, i=2, lock={3:0}, t={7:0}, x=1, x_set=0] [L713] COND TRUE 0 i <= 42 [L714] 0 x = i [L713] 0 i++ VAL [arg={0:0}, arg={0:0}, cond={4:0}, i=3, lock={3:0}, t={7:0}, x=2, x_set=0] [L713] COND TRUE 0 i <= 42 [L714] 0 x = i [L713] 0 i++ VAL [arg={0:0}, arg={0:0}, cond={4:0}, i=4, lock={3:0}, t={7:0}, x=3, x_set=0] [L713] COND TRUE 0 i <= 42 [L714] 0 x = i [L713] 0 i++ VAL [arg={0:0}, arg={0:0}, cond={4:0}, i=5, lock={3:0}, t={7:0}, x=4, x_set=0] [L713] COND TRUE 0 i <= 42 [L714] 0 x = i [L713] 0 i++ VAL [arg={0:0}, arg={0:0}, cond={4:0}, i=6, lock={3:0}, t={7:0}, x=5, x_set=0] [L713] COND TRUE 0 i <= 42 [L714] 0 x = i [L713] 0 i++ VAL [arg={0:0}, arg={0:0}, cond={4:0}, i=7, lock={3:0}, t={7:0}, x=6, x_set=0] [L713] COND TRUE 0 i <= 42 [L714] 0 x = i [L713] 0 i++ VAL [arg={0:0}, arg={0:0}, cond={4:0}, i=8, lock={3:0}, t={7:0}, x=7, x_set=0] [L713] COND TRUE 0 i <= 42 [L714] 0 x = i [L713] 0 i++ VAL [arg={0:0}, arg={0:0}, cond={4:0}, i=9, lock={3:0}, t={7:0}, x=8, x_set=0] [L713] COND TRUE 0 i <= 42 [L714] 0 x = i [L713] 0 i++ VAL [arg={0:0}, arg={0:0}, cond={4:0}, i=10, lock={3:0}, t={7:0}, x=9, x_set=0] [L713] COND TRUE 0 i <= 42 [L714] 0 x = i [L713] 0 i++ VAL [arg={0:0}, arg={0:0}, cond={4:0}, i=11, lock={3:0}, t={7:0}, x=10, x_set=0] [L713] COND TRUE 0 i <= 42 [L714] 0 x = i [L713] 0 i++ VAL [arg={0:0}, arg={0:0}, cond={4:0}, i=12, lock={3:0}, t={7:0}, x=11, x_set=0] [L713] COND TRUE 0 i <= 42 [L714] 0 x = i [L713] 0 i++ VAL [arg={0:0}, arg={0:0}, cond={4:0}, i=13, lock={3:0}, t={7:0}, x=12, x_set=0] [L713] COND TRUE 0 i <= 42 [L714] 0 x = i [L713] 0 i++ VAL [arg={0:0}, arg={0:0}, cond={4:0}, i=14, lock={3:0}, t={7:0}, x=13, x_set=0] [L713] COND TRUE 0 i <= 42 [L714] 0 x = i [L713] 0 i++ VAL [arg={0:0}, arg={0:0}, cond={4:0}, i=15, lock={3:0}, t={7:0}, x=14, x_set=0] [L713] COND TRUE 0 i <= 42 [L714] 0 x = i [L713] 0 i++ VAL [arg={0:0}, arg={0:0}, cond={4:0}, i=16, lock={3:0}, t={7:0}, x=15, x_set=0] [L713] COND TRUE 0 i <= 42 [L714] 0 x = i [L713] 0 i++ VAL [arg={0:0}, arg={0:0}, cond={4:0}, i=17, lock={3:0}, t={7:0}, x=16, x_set=0] [L713] COND TRUE 0 i <= 42 [L714] 0 x = i [L713] 0 i++ VAL [arg={0:0}, arg={0:0}, cond={4:0}, i=18, lock={3:0}, t={7:0}, x=17, x_set=0] [L713] COND TRUE 0 i <= 42 [L714] 0 x = i [L713] 0 i++ VAL [arg={0:0}, arg={0:0}, cond={4:0}, i=19, lock={3:0}, t={7:0}, x=18, x_set=0] [L713] COND TRUE 0 i <= 42 [L714] 0 x = i [L713] 0 i++ VAL [arg={0:0}, arg={0:0}, cond={4:0}, i=20, lock={3:0}, t={7:0}, x=19, x_set=0] [L713] COND TRUE 0 i <= 42 [L714] 0 x = i [L713] 0 i++ VAL [arg={0:0}, arg={0:0}, cond={4:0}, i=21, lock={3:0}, t={7:0}, x=20, x_set=0] [L713] COND TRUE 0 i <= 42 [L714] 0 x = i [L713] 0 i++ VAL [arg={0:0}, arg={0:0}, cond={4:0}, i=22, lock={3:0}, t={7:0}, x=21, x_set=0] [L713] COND TRUE 0 i <= 42 [L714] 0 x = i [L713] 0 i++ VAL [arg={0:0}, arg={0:0}, cond={4:0}, i=23, lock={3:0}, t={7:0}, x=22, x_set=0] [L713] COND TRUE 0 i <= 42 [L714] 0 x = i [L713] 0 i++ VAL [arg={0:0}, arg={0:0}, cond={4:0}, i=24, lock={3:0}, t={7:0}, x=23, x_set=0] [L713] COND TRUE 0 i <= 42 [L714] 0 x = i [L713] 0 i++ VAL [arg={0:0}, arg={0:0}, cond={4:0}, i=25, lock={3:0}, t={7:0}, x=24, x_set=0] [L713] COND TRUE 0 i <= 42 [L714] 0 x = i [L713] 0 i++ VAL [arg={0:0}, arg={0:0}, cond={4:0}, i=26, lock={3:0}, t={7:0}, x=25, x_set=0] [L713] COND TRUE 0 i <= 42 [L714] 0 x = i [L713] 0 i++ VAL [arg={0:0}, arg={0:0}, cond={4:0}, i=27, lock={3:0}, t={7:0}, x=26, x_set=0] [L713] COND TRUE 0 i <= 42 [L714] 0 x = i [L713] 0 i++ VAL [arg={0:0}, arg={0:0}, cond={4:0}, i=28, lock={3:0}, t={7:0}, x=27, x_set=0] [L713] COND TRUE 0 i <= 42 [L714] 0 x = i [L713] 0 i++ VAL [arg={0:0}, arg={0:0}, cond={4:0}, i=29, lock={3:0}, t={7:0}, x=28, x_set=0] [L713] COND TRUE 0 i <= 42 [L714] 0 x = i [L713] 0 i++ VAL [arg={0:0}, arg={0:0}, cond={4:0}, i=30, lock={3:0}, t={7:0}, x=29, x_set=0] [L713] COND TRUE 0 i <= 42 [L714] 0 x = i [L713] 0 i++ VAL [arg={0:0}, arg={0:0}, cond={4:0}, i=31, lock={3:0}, t={7:0}, x=30, x_set=0] [L713] COND TRUE 0 i <= 42 [L714] 0 x = i [L713] 0 i++ VAL [arg={0:0}, arg={0:0}, cond={4:0}, i=32, lock={3:0}, t={7:0}, x=31, x_set=0] [L713] COND TRUE 0 i <= 42 [L714] 0 x = i [L713] 0 i++ VAL [arg={0:0}, arg={0:0}, cond={4:0}, i=33, lock={3:0}, t={7:0}, x=32, x_set=0] [L713] COND TRUE 0 i <= 42 [L714] 0 x = i [L713] 0 i++ VAL [arg={0:0}, arg={0:0}, cond={4:0}, i=34, lock={3:0}, t={7:0}, x=33, x_set=0] [L713] COND TRUE 0 i <= 42 [L714] 0 x = i [L713] 0 i++ VAL [arg={0:0}, arg={0:0}, cond={4:0}, i=35, lock={3:0}, t={7:0}, x=34, x_set=0] [L713] COND TRUE 0 i <= 42 [L714] 0 x = i [L713] 0 i++ VAL [arg={0:0}, arg={0:0}, cond={4:0}, i=36, lock={3:0}, t={7:0}, x=35, x_set=0] [L713] COND TRUE 0 i <= 42 [L714] 0 x = i [L713] 0 i++ VAL [arg={0:0}, arg={0:0}, cond={4:0}, i=37, lock={3:0}, t={7:0}, x=36, x_set=0] [L713] COND TRUE 0 i <= 42 [L714] 0 x = i [L713] 0 i++ VAL [arg={0:0}, arg={0:0}, cond={4:0}, i=38, lock={3:0}, t={7:0}, x=37, x_set=0] [L713] COND TRUE 0 i <= 42 [L714] 0 x = i [L713] 0 i++ VAL [arg={0:0}, arg={0:0}, cond={4:0}, i=39, lock={3:0}, t={7:0}, x=38, x_set=0] [L713] COND TRUE 0 i <= 42 [L714] 0 x = i [L713] 0 i++ VAL [arg={0:0}, arg={0:0}, cond={4:0}, i=40, lock={3:0}, t={7:0}, x=39, x_set=0] [L713] COND TRUE 0 i <= 42 [L714] 0 x = i [L713] 0 i++ VAL [arg={0:0}, arg={0:0}, cond={4:0}, i=41, lock={3:0}, t={7:0}, x=40, x_set=0] [L713] COND TRUE 0 i <= 42 [L714] 0 x = i [L713] 0 i++ VAL [arg={0:0}, arg={0:0}, cond={4:0}, i=42, lock={3:0}, t={7:0}, x=41, x_set=0] [L713] COND TRUE 0 i <= 42 [L714] 0 x = i [L713] 0 i++ VAL [arg={0:0}, arg={0:0}, cond={4:0}, i=43, lock={3:0}, t={7:0}, x=42, x_set=0] [L713] COND FALSE 0 !(i <= 42) [L715] 0 x_set = 1 VAL [arg={0:0}, arg={0:0}, cond={4:0}, i=43, lock={3:0}, t={7:0}, x=42, x_set=1, x_set = 1=153] [L704] 1 !x_set VAL [arg={0:0}, arg={0:0}, cond={4:0}, lock={3:0}, x=42, x_set=1] Now there is a data race on ~x_set~0 between C: x_set = 1 [715] and C: !x_set [704] - UnprovableResult [Line: 715]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 714]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 717]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 712]: 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: 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, 115 locations, 8 error locations. Started 1 CEGAR loops. OverallTime: 7.9s, OverallIterations: 12, TraceHistogramMax: 43, PathProgramHistogramMax: 5, EmptinessCheckTime: 0.0s, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.9s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1039 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1039 mSDsluCounter, 241 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 524 mSDsCounter, 36 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 758 IncrementalHoareTripleChecker+Invalid, 794 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 36 mSolverCounterUnsat, 79 mSDtfsCounter, 758 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 351 GetRequests, 260 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 143 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=416occurred in iteration=11, InterpolantAutomatonStates: 107, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 11 MinimizatonAttempts, 60 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.9s InterpolantComputationTime, 479 NumberOfCodeBlocks, 479 NumberOfCodeBlocksAsserted, 22 NumberOfCheckSat, 465 ConstructedInterpolants, 0 QuantifiedInterpolants, 1183 SizeOfPredicates, 0 NumberOfNonLiveVariables, 960 ConjunctsInSsa, 48 ConjunctsInUnsatCore, 20 InterpolantComputations, 7 PerfectInterpolantSequences, 1/2651 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 18:57:38,996 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