./Ultimate.py --spec /storage/repos/ultimate/trunk/examples/svcomp/properties/no-data-race.prp --file /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_93-evilcollapse_racefree.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/goblint-regression/28-race_reach_93-evilcollapse_racefree.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 dad265ed8a17f32bb0a174302dfe188f9a15f60b81cc9c28a67851ab05270da2 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-efd9311-m [2022-04-18 18:45:09,041 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-04-18 18:45:09,043 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-04-18 18:45:09,077 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-04-18 18:45:09,077 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-04-18 18:45:09,078 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-04-18 18:45:09,078 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-04-18 18:45:09,079 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-04-18 18:45:09,080 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-04-18 18:45:09,081 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-04-18 18:45:09,081 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-04-18 18:45:09,083 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-04-18 18:45:09,084 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-04-18 18:45:09,087 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-04-18 18:45:09,089 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-04-18 18:45:09,090 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-04-18 18:45:09,091 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-04-18 18:45:09,092 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-04-18 18:45:09,094 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-04-18 18:45:09,099 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-04-18 18:45:09,101 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-04-18 18:45:09,101 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-04-18 18:45:09,102 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-04-18 18:45:09,103 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-04-18 18:45:09,104 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-04-18 18:45:09,116 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-04-18 18:45:09,116 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-04-18 18:45:09,116 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-04-18 18:45:09,117 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-04-18 18:45:09,117 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-04-18 18:45:09,118 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-04-18 18:45:09,119 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-04-18 18:45:09,120 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-04-18 18:45:09,120 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-04-18 18:45:09,121 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-04-18 18:45:09,122 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-04-18 18:45:09,122 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-04-18 18:45:09,123 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-04-18 18:45:09,123 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-04-18 18:45:09,123 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-04-18 18:45:09,124 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-04-18 18:45:09,125 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-04-18 18:45:09,126 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/config/svcomp-DataRace-32bit-Taipan_Default.epf [2022-04-18 18:45:09,149 INFO L113 SettingsManager]: Loading preferences was successful [2022-04-18 18:45:09,149 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-04-18 18:45:09,150 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-04-18 18:45:09,150 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-04-18 18:45:09,150 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-04-18 18:45:09,150 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-04-18 18:45:09,150 INFO L138 SettingsManager]: * User list type=DISABLED [2022-04-18 18:45:09,151 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-04-18 18:45:09,151 INFO L138 SettingsManager]: * Explicit value domain=true [2022-04-18 18:45:09,151 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-04-18 18:45:09,151 INFO L138 SettingsManager]: * Octagon Domain=false [2022-04-18 18:45:09,152 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-04-18 18:45:09,152 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-04-18 18:45:09,152 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-04-18 18:45:09,152 INFO L138 SettingsManager]: * Interval Domain=false [2022-04-18 18:45:09,152 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-04-18 18:45:09,152 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-04-18 18:45:09,152 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-04-18 18:45:09,153 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-04-18 18:45:09,153 INFO L138 SettingsManager]: * sizeof long=4 [2022-04-18 18:45:09,153 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-04-18 18:45:09,154 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-04-18 18:45:09,154 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-04-18 18:45:09,154 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-04-18 18:45:09,154 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-04-18 18:45:09,154 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-04-18 18:45:09,154 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-04-18 18:45:09,155 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-04-18 18:45:09,155 INFO L138 SettingsManager]: * sizeof long double=12 [2022-04-18 18:45:09,155 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-04-18 18:45:09,155 INFO L138 SettingsManager]: * Use constant arrays=true [2022-04-18 18:45:09,155 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-04-18 18:45:09,155 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-04-18 18:45:09,156 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-04-18 18:45:09,156 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-18 18:45:09,156 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-04-18 18:45:09,156 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-04-18 18:45:09,156 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-04-18 18:45:09,156 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-04-18 18:45:09,156 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-04-18 18:45:09,156 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-04-18 18:45:09,157 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-04-18 18:45:09,157 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-04-18 18:45:09,157 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UTaipan-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dad265ed8a17f32bb0a174302dfe188f9a15f60b81cc9c28a67851ab05270da2 [2022-04-18 18:45:09,347 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-04-18 18:45:09,367 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-04-18 18:45:09,369 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-04-18 18:45:09,370 INFO L271 PluginConnector]: Initializing CDTParser... [2022-04-18 18:45:09,370 INFO L275 PluginConnector]: CDTParser initialized [2022-04-18 18:45:09,371 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_93-evilcollapse_racefree.i [2022-04-18 18:45:09,426 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/0e1b72323/41158d72ccdc4635b41a2f0b270ad5ad/FLAG64a183329 [2022-04-18 18:45:09,855 INFO L306 CDTParser]: Found 1 translation units. [2022-04-18 18:45:09,861 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_93-evilcollapse_racefree.i [2022-04-18 18:45:09,875 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/0e1b72323/41158d72ccdc4635b41a2f0b270ad5ad/FLAG64a183329 [2022-04-18 18:45:09,886 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/0e1b72323/41158d72ccdc4635b41a2f0b270ad5ad [2022-04-18 18:45:09,888 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-04-18 18:45:09,889 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-04-18 18:45:09,891 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-04-18 18:45:09,891 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-04-18 18:45:09,893 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-04-18 18:45:09,893 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 06:45:09" (1/1) ... [2022-04-18 18:45:09,894 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b61f3cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:45:09, skipping insertion in model container [2022-04-18 18:45:09,894 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 06:45:09" (1/1) ... [2022-04-18 18:45:09,899 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-04-18 18:45:09,942 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-04-18 18:45:10,254 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_93-evilcollapse_racefree.i[47038,47051] [2022-04-18 18:45:10,277 WARN L1550 CHandler]: Possible shadowing of function new [2022-04-18 18:45:10,278 WARN L1550 CHandler]: Possible shadowing of function new [2022-04-18 18:45:10,278 WARN L1550 CHandler]: Possible shadowing of function new [2022-04-18 18:45:10,280 WARN L1550 CHandler]: Possible shadowing of function new [2022-04-18 18:45:10,308 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-18 18:45:10,326 INFO L203 MainTranslator]: Completed pre-run [2022-04-18 18:45:10,354 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_93-evilcollapse_racefree.i[47038,47051] [2022-04-18 18:45:10,368 WARN L1550 CHandler]: Possible shadowing of function new [2022-04-18 18:45:10,370 WARN L1550 CHandler]: Possible shadowing of function new [2022-04-18 18:45:10,371 WARN L1550 CHandler]: Possible shadowing of function new [2022-04-18 18:45:10,372 WARN L1550 CHandler]: Possible shadowing of function new [2022-04-18 18:45:10,380 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-18 18:45:10,427 INFO L208 MainTranslator]: Completed translation [2022-04-18 18:45:10,427 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:45:10 WrapperNode [2022-04-18 18:45:10,427 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-04-18 18:45:10,428 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-04-18 18:45:10,429 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-04-18 18:45:10,429 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-04-18 18:45:10,433 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:45:10" (1/1) ... [2022-04-18 18:45:10,460 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:45:10" (1/1) ... [2022-04-18 18:45:10,486 INFO L137 Inliner]: procedures = 279, calls = 51, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 345 [2022-04-18 18:45:10,491 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-04-18 18:45:10,492 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-04-18 18:45:10,492 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-04-18 18:45:10,492 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-04-18 18:45:10,497 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:45:10" (1/1) ... [2022-04-18 18:45:10,497 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:45:10" (1/1) ... [2022-04-18 18:45:10,502 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:45:10" (1/1) ... [2022-04-18 18:45:10,502 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:45:10" (1/1) ... [2022-04-18 18:45:10,516 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:45:10" (1/1) ... [2022-04-18 18:45:10,520 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:45:10" (1/1) ... [2022-04-18 18:45:10,522 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:45:10" (1/1) ... [2022-04-18 18:45:10,525 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-04-18 18:45:10,525 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-04-18 18:45:10,525 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-04-18 18:45:10,526 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-04-18 18:45:10,526 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:45:10" (1/1) ... [2022-04-18 18:45:10,530 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-18 18:45:10,556 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 [2022-04-18 18:45:10,575 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 18:45:10,581 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 18:45:10,600 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-04-18 18:45:10,600 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-04-18 18:45:10,601 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-04-18 18:45:10,601 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-04-18 18:45:10,601 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-04-18 18:45:10,601 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-04-18 18:45:10,601 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-04-18 18:45:10,601 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-04-18 18:45:10,601 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-04-18 18:45:10,601 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-04-18 18:45:10,601 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-04-18 18:45:10,602 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-04-18 18:45:10,602 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-04-18 18:45:10,602 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-04-18 18:45:10,603 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 18:45:10,707 INFO L234 CfgBuilder]: Building ICFG [2022-04-18 18:45:10,720 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-04-18 18:45:11,087 INFO L275 CfgBuilder]: Performing block encoding [2022-04-18 18:45:11,095 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-04-18 18:45:11,095 INFO L299 CfgBuilder]: Removed 16 assume(true) statements. [2022-04-18 18:45:11,096 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 06:45:11 BoogieIcfgContainer [2022-04-18 18:45:11,107 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-04-18 18:45:11,108 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-04-18 18:45:11,109 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-04-18 18:45:11,123 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-04-18 18:45:11,123 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 06:45:09" (1/3) ... [2022-04-18 18:45:11,124 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4356c497 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 06:45:11, skipping insertion in model container [2022-04-18 18:45:11,124 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:45:10" (2/3) ... [2022-04-18 18:45:11,124 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4356c497 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 06:45:11, skipping insertion in model container [2022-04-18 18:45:11,124 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 06:45:11" (3/3) ... [2022-04-18 18:45:11,125 INFO L111 eAbstractionObserver]: Analyzing ICFG 28-race_reach_93-evilcollapse_racefree.i [2022-04-18 18:45:11,129 WARN L147 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-04-18 18:45:11,129 INFO L202 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-04-18 18:45:11,130 INFO L161 ceAbstractionStarter]: Applying trace abstraction to program that has 20 error locations. [2022-04-18 18:45:11,130 INFO L504 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-04-18 18:45:11,241 INFO L135 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-04-18 18:45:11,280 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-18 18:45:11,285 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 18:45:11,285 INFO L341 AbstractCegarLoop]: Starting to check reachability of 28 error locations. [2022-04-18 18:45:11,301 INFO L116 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-04-18 18:45:11,311 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 373 places, 397 transitions, 802 flow [2022-04-18 18:45:11,313 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 373 places, 397 transitions, 802 flow [2022-04-18 18:45:11,314 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 373 places, 397 transitions, 802 flow [2022-04-18 18:45:11,420 INFO L129 PetriNetUnfolder]: 29/420 cut-off events. [2022-04-18 18:45:11,420 INFO L130 PetriNetUnfolder]: For 1/2 co-relation queries the response was YES. [2022-04-18 18:45:11,425 INFO L84 FinitePrefix]: Finished finitePrefix Result has 426 conditions, 420 events. 29/420 cut-off events. For 1/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 1055 event pairs, 0 based on Foata normal form. 0/367 useless extension candidates. Maximal degree in co-relation 251. Up to 4 conditions per place. [2022-04-18 18:45:11,430 INFO L116 LiptonReduction]: Number of co-enabled transitions 7772 [2022-04-18 18:45:49,004 WARN L232 SmtUtils]: Spent 6.65s on a formula simplification. DAG size of input: 116 DAG size of output: 112 (called from [L 279] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-04-18 18:45:58,284 WARN L232 SmtUtils]: Spent 7.14s on a formula simplification. DAG size of input: 116 DAG size of output: 112 (called from [L 279] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-04-18 18:46:42,642 WARN L232 SmtUtils]: Spent 35.70s on a formula simplification. DAG size of input: 169 DAG size of output: 165 (called from [L 279] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-04-18 18:46:53,950 WARN L232 SmtUtils]: Spent 11.31s on a formula simplification that was a NOOP. DAG size: 153 (called from [L 316] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-04-18 18:47:27,674 WARN L232 SmtUtils]: Spent 33.72s on a formula simplification. DAG size of input: 169 DAG size of output: 165 (called from [L 279] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-04-18 18:47:39,120 WARN L232 SmtUtils]: Spent 11.44s on a formula simplification that was a NOOP. DAG size: 153 (called from [L 316] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-04-18 18:47:48,083 WARN L232 SmtUtils]: Spent 8.39s on a formula simplification. DAG size of input: 130 DAG size of output: 128 (called from [L 279] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-04-18 18:47:56,354 WARN L232 SmtUtils]: Spent 5.12s on a formula simplification. DAG size of input: 130 DAG size of output: 128 (called from [L 279] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-04-18 18:49:17,519 WARN L232 SmtUtils]: Spent 1.30m on a formula simplification that was a NOOP. DAG size: 258 (called from [L 279] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-04-18 18:50:37,521 WARN L232 SmtUtils]: Spent 1.33m on a formula simplification that was a NOOP. DAG size: 252 (called from [L 316] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-04-18 18:52:11,672 WARN L232 SmtUtils]: Spent 1.57m on a formula simplification that was a NOOP. DAG size: 258 (called from [L 279] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-04-18 18:53:40,547 WARN L232 SmtUtils]: Spent 1.48m on a formula simplification that was a NOOP. DAG size: 252 (called from [L 316] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-04-18 18:53:40,615 INFO L131 LiptonReduction]: Checked pairs total: 37852 [2022-04-18 18:53:40,616 INFO L133 LiptonReduction]: Total number of compositions: 415 [2022-04-18 18:53:40,623 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 85 places, 99 transitions, 206 flow [2022-04-18 18:53:40,671 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 728 states, 683 states have (on average 2.266471449487555) internal successors, (1548), 727 states have internal predecessors, (1548), 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 18:53:40,673 INFO L276 IsEmpty]: Start isEmpty. Operand has 728 states, 683 states have (on average 2.266471449487555) internal successors, (1548), 727 states have internal predecessors, (1548), 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 18:53:40,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-04-18 18:53:40,676 INFO L491 BasicCegarLoop]: Found error trace [2022-04-18 18:53:40,677 INFO L499 BasicCegarLoop]: trace histogram [1, 1] [2022-04-18 18:53:40,677 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE (and 25 more)] === [2022-04-18 18:53:40,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 18:53:40,680 INFO L85 PathProgramCache]: Analyzing trace with hash 46533, now seen corresponding path program 1 times [2022-04-18 18:53:40,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-04-18 18:53:40,686 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425834703] [2022-04-18 18:53:40,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 18:53:40,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 18:53:40,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 18:53:40,822 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 18:53:40,822 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-04-18 18:53:40,823 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425834703] [2022-04-18 18:53:40,823 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [425834703] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 18:53:40,823 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 18:53:40,824 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-04-18 18:53:40,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081826689] [2022-04-18 18:53:40,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 18:53:40,831 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-04-18 18:53:40,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-04-18 18:53:40,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-04-18 18:53:40,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-04-18 18:53:40,849 INFO L87 Difference]: Start difference. First operand has 728 states, 683 states have (on average 2.266471449487555) internal successors, (1548), 727 states have internal predecessors, (1548), 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 2.0) internal successors, (2), 2 states have internal predecessors, (2), 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 18:53:41,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-18 18:53:41,151 INFO L93 Difference]: Finished difference Result 716 states and 1393 transitions. [2022-04-18 18:53:41,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-04-18 18:53:41,157 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 2.0) internal successors, (2), 2 states have internal predecessors, (2), 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 2 [2022-04-18 18:53:41,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-18 18:53:41,168 INFO L225 Difference]: With dead ends: 716 [2022-04-18 18:53:41,168 INFO L226 Difference]: Without dead ends: 714 [2022-04-18 18:53:41,168 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 18:53:41,174 INFO L913 BasicCegarLoop]: 39 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-04-18 18:53:41,175 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 39 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-04-18 18:53:41,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 714 states. [2022-04-18 18:53:41,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 714 to 714. [2022-04-18 18:53:41,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 714 states, 683 states have (on average 2.035139092240117) internal successors, (1390), 713 states have internal predecessors, (1390), 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 18:53:41,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 714 states to 714 states and 1390 transitions. [2022-04-18 18:53:41,223 INFO L78 Accepts]: Start accepts. Automaton has 714 states and 1390 transitions. Word has length 2 [2022-04-18 18:53:41,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-18 18:53:41,224 INFO L478 AbstractCegarLoop]: Abstraction has 714 states and 1390 transitions. [2022-04-18 18:53:41,224 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 2.0) internal successors, (2), 2 states have internal predecessors, (2), 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 18:53:41,224 INFO L276 IsEmpty]: Start isEmpty. Operand 714 states and 1390 transitions. [2022-04-18 18:53:41,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-04-18 18:53:41,224 INFO L491 BasicCegarLoop]: Found error trace [2022-04-18 18:53:41,224 INFO L499 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1] [2022-04-18 18:53:41,225 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-04-18 18:53:41,225 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE (and 25 more)] === [2022-04-18 18:53:41,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 18:53:41,225 INFO L85 PathProgramCache]: Analyzing trace with hash -1931072905, now seen corresponding path program 1 times [2022-04-18 18:53:41,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-04-18 18:53:41,226 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309114512] [2022-04-18 18:53:41,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 18:53:41,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 18:53:41,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 18:53:41,312 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-04-18 18:53:41,312 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-04-18 18:53:41,312 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309114512] [2022-04-18 18:53:41,313 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [309114512] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 18:53:41,313 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 18:53:41,313 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 18:53:41,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200905007] [2022-04-18 18:53:41,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 18:53:41,315 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 18:53:41,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-04-18 18:53:41,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 18:53:41,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 18:53:41,317 INFO L87 Difference]: Start difference. First operand 714 states and 1390 transitions. Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 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 18:53:42,648 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.30s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-04-18 18:53:43,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-18 18:53:43,243 INFO L93 Difference]: Finished difference Result 716 states and 1393 transitions. [2022-04-18 18:53:43,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 18:53:43,243 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 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 7 [2022-04-18 18:53:43,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-18 18:53:43,246 INFO L225 Difference]: With dead ends: 716 [2022-04-18 18:53:43,246 INFO L226 Difference]: Without dead ends: 716 [2022-04-18 18:53:43,247 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 18:53:43,247 INFO L913 BasicCegarLoop]: 39 mSDtfsCounter, 2 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-04-18 18:53:43,248 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 78 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-04-18 18:53:43,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 716 states. [2022-04-18 18:53:43,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 716 to 715. [2022-04-18 18:53:43,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 715 states, 684 states have (on average 2.033625730994152) internal successors, (1391), 714 states have internal predecessors, (1391), 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 18:53:43,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 715 states to 715 states and 1391 transitions. [2022-04-18 18:53:43,265 INFO L78 Accepts]: Start accepts. Automaton has 715 states and 1391 transitions. Word has length 7 [2022-04-18 18:53:43,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-18 18:53:43,266 INFO L478 AbstractCegarLoop]: Abstraction has 715 states and 1391 transitions. [2022-04-18 18:53:43,266 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 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 18:53:43,266 INFO L276 IsEmpty]: Start isEmpty. Operand 715 states and 1391 transitions. [2022-04-18 18:53:43,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-04-18 18:53:43,266 INFO L491 BasicCegarLoop]: Found error trace [2022-04-18 18:53:43,267 INFO L499 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 18:53:43,267 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-04-18 18:53:43,267 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE (and 25 more)] === [2022-04-18 18:53:43,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 18:53:43,268 INFO L85 PathProgramCache]: Analyzing trace with hash -1677917646, now seen corresponding path program 1 times [2022-04-18 18:53:43,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-04-18 18:53:43,268 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159278386] [2022-04-18 18:53:43,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 18:53:43,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 18:53:43,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 18:53:43,341 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-04-18 18:53:43,341 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-04-18 18:53:43,342 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159278386] [2022-04-18 18:53:43,342 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [159278386] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 18:53:43,342 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 18:53:43,342 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-18 18:53:43,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979388146] [2022-04-18 18:53:43,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 18:53:43,344 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 18:53:43,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-04-18 18:53:43,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 18:53:43,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 18:53:43,345 INFO L87 Difference]: Start difference. First operand 715 states and 1391 transitions. Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 18:53:44,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-18 18:53:44,665 INFO L93 Difference]: Finished difference Result 716 states and 1392 transitions. [2022-04-18 18:53:44,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 18:53:44,666 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-04-18 18:53:44,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-18 18:53:44,668 INFO L225 Difference]: With dead ends: 716 [2022-04-18 18:53:44,669 INFO L226 Difference]: Without dead ends: 716 [2022-04-18 18:53:44,669 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 18:53:44,669 INFO L913 BasicCegarLoop]: 39 mSDtfsCounter, 0 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-04-18 18:53:44,670 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 78 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-04-18 18:53:44,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 716 states. [2022-04-18 18:53:44,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 716 to 716. [2022-04-18 18:53:44,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 716 states, 685 states have (on average 2.0321167883211677) internal successors, (1392), 715 states have internal predecessors, (1392), 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 18:53:44,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 716 states to 716 states and 1392 transitions. [2022-04-18 18:53:44,682 INFO L78 Accepts]: Start accepts. Automaton has 716 states and 1392 transitions. Word has length 9 [2022-04-18 18:53:44,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-18 18:53:44,683 INFO L478 AbstractCegarLoop]: Abstraction has 716 states and 1392 transitions. [2022-04-18 18:53:44,683 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 18:53:44,683 INFO L276 IsEmpty]: Start isEmpty. Operand 716 states and 1392 transitions. [2022-04-18 18:53:44,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-04-18 18:53:44,683 INFO L491 BasicCegarLoop]: Found error trace [2022-04-18 18:53:44,683 INFO L499 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 18:53:44,684 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-04-18 18:53:44,684 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE (and 25 more)] === [2022-04-18 18:53:44,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 18:53:44,684 INFO L85 PathProgramCache]: Analyzing trace with hash -1670406675, now seen corresponding path program 1 times [2022-04-18 18:53:44,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-04-18 18:53:44,685 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718303971] [2022-04-18 18:53:44,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 18:53:44,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 18:53:44,730 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-18 18:53:44,731 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1816920003] [2022-04-18 18:53:44,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 18:53:44,731 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-18 18:53:44,731 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 [2022-04-18 18:53:44,732 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 18:53:44,771 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 18:53:44,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 18:53:44,997 INFO L263 TraceCheckSpWp]: Trace formula consists of 1122 conjuncts, 3 conjunts are in the unsatisfiable core [2022-04-18 18:53:45,001 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-18 18:53:45,043 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-04-18 18:53:45,044 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-18 18:53:45,072 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-04-18 18:53:45,072 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-04-18 18:53:45,073 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718303971] [2022-04-18 18:53:45,073 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-18 18:53:45,073 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1816920003] [2022-04-18 18:53:45,073 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1816920003] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-18 18:53:45,073 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1105570089] [2022-04-18 18:53:45,080 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$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-04-18 18:53:45,082 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-04-18 18:53:45,082 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2022-04-18 18:53:45,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182217590] [2022-04-18 18:53:45,083 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-04-18 18:53:45,083 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-04-18 18:53:45,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-04-18 18:53:45,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-04-18 18:53:45,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-04-18 18:53:45,087 INFO L87 Difference]: Start difference. First operand 716 states and 1392 transitions. Second operand has 6 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 18:53:47,190 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-04-18 18:53:47,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-18 18:53:47,371 INFO L93 Difference]: Finished difference Result 719 states and 1395 transitions. [2022-04-18 18:53:47,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-04-18 18:53:47,372 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 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 18:53:47,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-18 18:53:47,374 INFO L225 Difference]: With dead ends: 719 [2022-04-18 18:53:47,374 INFO L226 Difference]: Without dead ends: 719 [2022-04-18 18:53:47,375 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-04-18 18:53:47,375 INFO L913 BasicCegarLoop]: 39 mSDtfsCounter, 0 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-04-18 18:53:47,375 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 117 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-04-18 18:53:47,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 719 states. [2022-04-18 18:53:47,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 719 to 719. [2022-04-18 18:53:47,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 719 states, 688 states have (on average 2.0276162790697674) internal successors, (1395), 718 states have internal predecessors, (1395), 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 18:53:47,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 719 states to 719 states and 1395 transitions. [2022-04-18 18:53:47,390 INFO L78 Accepts]: Start accepts. Automaton has 719 states and 1395 transitions. Word has length 10 [2022-04-18 18:53:47,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-18 18:53:47,390 INFO L478 AbstractCegarLoop]: Abstraction has 719 states and 1395 transitions. [2022-04-18 18:53:47,390 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 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 18:53:47,390 INFO L276 IsEmpty]: Start isEmpty. Operand 719 states and 1395 transitions. [2022-04-18 18:53:47,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-04-18 18:53:47,391 INFO L491 BasicCegarLoop]: Found error trace [2022-04-18 18:53:47,391 INFO L499 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 18:53:47,411 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-04-18 18:53:47,607 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-18 18:53:47,608 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE (and 25 more)] === [2022-04-18 18:53:47,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 18:53:47,608 INFO L85 PathProgramCache]: Analyzing trace with hash 1906546930, now seen corresponding path program 2 times [2022-04-18 18:53:47,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-04-18 18:53:47,608 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1601030318] [2022-04-18 18:53:47,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 18:53:47,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 18:53:47,745 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-18 18:53:47,752 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1171932573] [2022-04-18 18:53:47,752 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-04-18 18:53:47,752 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-18 18:53:47,752 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 [2022-04-18 18:53:47,759 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 18:53:47,766 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 18:53:48,184 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-04-18 18:53:48,184 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-18 18:53:48,187 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 3 conjunts are in the unsatisfiable core [2022-04-18 18:53:48,189 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-18 18:53:48,225 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-04-18 18:53:48,225 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-18 18:53:48,330 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-04-18 18:53:48,331 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-04-18 18:53:48,331 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1601030318] [2022-04-18 18:53:48,331 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-18 18:53:48,331 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1171932573] [2022-04-18 18:53:48,331 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1171932573] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-18 18:53:48,331 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2094880853] [2022-04-18 18:53:48,332 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$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-04-18 18:53:48,333 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-04-18 18:53:48,333 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2022-04-18 18:53:48,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060430867] [2022-04-18 18:53:48,333 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-04-18 18:53:48,334 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-04-18 18:53:48,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-04-18 18:53:48,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-04-18 18:53:48,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-04-18 18:53:48,336 INFO L87 Difference]: Start difference. First operand 719 states and 1395 transitions. Second operand has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 18:53:49,990 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.39s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-04-18 18:53:51,902 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.26s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-04-18 18:53:52,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-18 18:53:52,062 INFO L93 Difference]: Finished difference Result 737 states and 1416 transitions. [2022-04-18 18:53:52,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-04-18 18:53:52,062 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 5 states have internal predecessors, (14), 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 13 [2022-04-18 18:53:52,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-18 18:53:52,065 INFO L225 Difference]: With dead ends: 737 [2022-04-18 18:53:52,065 INFO L226 Difference]: Without dead ends: 737 [2022-04-18 18:53:52,065 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-04-18 18:53:52,066 INFO L913 BasicCegarLoop]: 39 mSDtfsCounter, 8 mSDsluCounter, 284 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 195 SdHoareTripleChecker+Invalid, 183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2022-04-18 18:53:52,066 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 195 Invalid, 183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 179 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2022-04-18 18:53:52,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 737 states. [2022-04-18 18:53:52,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 737 to 737. [2022-04-18 18:53:52,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 737 states, 706 states have (on average 2.0056657223796033) internal successors, (1416), 736 states have internal predecessors, (1416), 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 18:53:52,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 737 states to 737 states and 1416 transitions. [2022-04-18 18:53:52,077 INFO L78 Accepts]: Start accepts. Automaton has 737 states and 1416 transitions. Word has length 13 [2022-04-18 18:53:52,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-18 18:53:52,077 INFO L478 AbstractCegarLoop]: Abstraction has 737 states and 1416 transitions. [2022-04-18 18:53:52,077 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 5 states have internal predecessors, (14), 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 18:53:52,078 INFO L276 IsEmpty]: Start isEmpty. Operand 737 states and 1416 transitions. [2022-04-18 18:53:52,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-04-18 18:53:52,078 INFO L491 BasicCegarLoop]: Found error trace [2022-04-18 18:53:52,078 INFO L499 BasicCegarLoop]: trace histogram [16, 4, 4, 2, 1, 1, 1, 1, 1] [2022-04-18 18:53:52,098 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 18:53:52,292 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-18 18:53:52,293 INFO L403 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE (and 25 more)] === [2022-04-18 18:53:52,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 18:53:52,293 INFO L85 PathProgramCache]: Analyzing trace with hash 437023459, now seen corresponding path program 3 times [2022-04-18 18:53:52,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-04-18 18:53:52,293 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731884686] [2022-04-18 18:53:52,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 18:53:52,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 18:53:52,848 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-18 18:53:52,849 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1753360136] [2022-04-18 18:53:52,849 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-04-18 18:53:52,849 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-18 18:53:52,850 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 [2022-04-18 18:53:52,851 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 18:53:52,852 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 18:53:55,874 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-04-18 18:53:55,875 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-18 18:53:55,974 INFO L263 TraceCheckSpWp]: Trace formula consists of 15435 conjuncts, 6 conjunts are in the unsatisfiable core [2022-04-18 18:53:55,987 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-18 18:53:56,051 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 79 proven. 10 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2022-04-18 18:53:56,051 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-18 18:53:56,144 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 79 proven. 10 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2022-04-18 18:53:56,144 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-04-18 18:53:56,144 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1731884686] [2022-04-18 18:53:56,144 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-18 18:53:56,144 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1753360136] [2022-04-18 18:53:56,144 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1753360136] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-18 18:53:56,144 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1210246073] [2022-04-18 18:53:56,145 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 18:53:56,145 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-04-18 18:53:56,145 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2022-04-18 18:53:56,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55001809] [2022-04-18 18:53:56,145 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-04-18 18:53:56,145 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-04-18 18:53:56,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-04-18 18:53:56,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-04-18 18:53:56,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2022-04-18 18:53:56,146 INFO L87 Difference]: Start difference. First operand 737 states and 1416 transitions. Second operand has 12 states, 12 states have (on average 1.75) internal successors, (21), 12 states have internal predecessors, (21), 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 18:54:01,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-18 18:54:01,069 INFO L93 Difference]: Finished difference Result 761 states and 1440 transitions. [2022-04-18 18:54:01,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-04-18 18:54:01,085 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 1.75) internal successors, (21), 12 states have internal predecessors, (21), 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 31 [2022-04-18 18:54:01,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-18 18:54:01,087 INFO L225 Difference]: With dead ends: 761 [2022-04-18 18:54:01,087 INFO L226 Difference]: Without dead ends: 761 [2022-04-18 18:54:01,087 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2022-04-18 18:54:01,087 INFO L913 BasicCegarLoop]: 39 mSDtfsCounter, 0 mSDsluCounter, 360 mSDsCounter, 0 mSdLazyCounter, 222 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 234 SdHoareTripleChecker+Invalid, 231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 222 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2022-04-18 18:54:01,088 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 234 Invalid, 231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 222 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2022-04-18 18:54:01,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 761 states. [2022-04-18 18:54:01,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 761 to 761. [2022-04-18 18:54:01,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 761 states, 730 states have (on average 1.9726027397260273) internal successors, (1440), 760 states have internal predecessors, (1440), 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 18:54:01,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 761 states to 761 states and 1440 transitions. [2022-04-18 18:54:01,100 INFO L78 Accepts]: Start accepts. Automaton has 761 states and 1440 transitions. Word has length 31 [2022-04-18 18:54:01,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-18 18:54:01,100 INFO L478 AbstractCegarLoop]: Abstraction has 761 states and 1440 transitions. [2022-04-18 18:54:01,100 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 1.75) internal successors, (21), 12 states have internal predecessors, (21), 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 18:54:01,100 INFO L276 IsEmpty]: Start isEmpty. Operand 761 states and 1440 transitions. [2022-04-18 18:54:01,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-04-18 18:54:01,103 INFO L491 BasicCegarLoop]: Found error trace [2022-04-18 18:54:01,103 INFO L499 BasicCegarLoop]: trace histogram [40, 4, 4, 2, 1, 1, 1, 1, 1] [2022-04-18 18:54:01,149 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 18:54:01,311 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,SelfDestructingSolverStorable5 [2022-04-18 18:54:01,312 INFO L403 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE (and 25 more)] === [2022-04-18 18:54:01,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 18:54:01,312 INFO L85 PathProgramCache]: Analyzing trace with hash -402802205, now seen corresponding path program 4 times [2022-04-18 18:54:01,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-04-18 18:54:01,312 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852862618] [2022-04-18 18:54:01,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 18:54:01,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 18:54:02,502 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-18 18:54:02,502 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [891537374] [2022-04-18 18:54:02,502 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-04-18 18:54:02,503 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-18 18:54:02,503 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 [2022-04-18 18:54:02,504 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 18:54:02,505 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 18:54:10,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 18:54:10,603 INFO L263 TraceCheckSpWp]: Trace formula consists of 38067 conjuncts, 12 conjunts are in the unsatisfiable core [2022-04-18 18:54:10,625 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-18 18:54:10,767 INFO L134 CoverageAnalysis]: Checked inductivity of 958 backedges. 367 proven. 55 refuted. 0 times theorem prover too weak. 536 trivial. 0 not checked. [2022-04-18 18:54:10,767 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-18 18:54:10,999 INFO L134 CoverageAnalysis]: Checked inductivity of 958 backedges. 367 proven. 55 refuted. 0 times theorem prover too weak. 536 trivial. 0 not checked. [2022-04-18 18:54:10,999 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-04-18 18:54:10,999 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852862618] [2022-04-18 18:54:11,000 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-18 18:54:11,000 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [891537374] [2022-04-18 18:54:11,000 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [891537374] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-18 18:54:11,000 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [818479841] [2022-04-18 18:54:11,000 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 18:54:11,001 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-04-18 18:54:11,001 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2022-04-18 18:54:11,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365579014] [2022-04-18 18:54:11,001 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-04-18 18:54:11,001 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-04-18 18:54:11,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-04-18 18:54:11,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-04-18 18:54:11,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2022-04-18 18:54:11,002 INFO L87 Difference]: Start difference. First operand 761 states and 1440 transitions. Second operand has 24 states, 24 states have (on average 1.375) internal successors, (33), 24 states have internal predecessors, (33), 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 18:54:20,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-18 18:54:20,619 INFO L93 Difference]: Finished difference Result 809 states and 1488 transitions. [2022-04-18 18:54:20,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-04-18 18:54:20,620 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 1.375) internal successors, (33), 24 states have internal predecessors, (33), 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 55 [2022-04-18 18:54:20,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-18 18:54:20,623 INFO L225 Difference]: With dead ends: 809 [2022-04-18 18:54:20,623 INFO L226 Difference]: Without dead ends: 809 [2022-04-18 18:54:20,623 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2022-04-18 18:54:20,624 INFO L913 BasicCegarLoop]: 39 mSDtfsCounter, 0 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.6s IncrementalHoareTripleChecker+Time [2022-04-18 18:54:20,624 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 117 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 9.6s Time] [2022-04-18 18:54:20,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 809 states. [2022-04-18 18:54:20,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 809 to 809. [2022-04-18 18:54:20,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 809 states, 778 states have (on average 1.9125964010282777) internal successors, (1488), 808 states have internal predecessors, (1488), 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 18:54:20,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 809 states to 809 states and 1488 transitions. [2022-04-18 18:54:20,636 INFO L78 Accepts]: Start accepts. Automaton has 809 states and 1488 transitions. Word has length 55 [2022-04-18 18:54:20,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-18 18:54:20,637 INFO L478 AbstractCegarLoop]: Abstraction has 809 states and 1488 transitions. [2022-04-18 18:54:20,637 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 1.375) internal successors, (33), 24 states have internal predecessors, (33), 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 18:54:20,637 INFO L276 IsEmpty]: Start isEmpty. Operand 809 states and 1488 transitions. [2022-04-18 18:54:20,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-04-18 18:54:20,641 INFO L491 BasicCegarLoop]: Found error trace [2022-04-18 18:54:20,641 INFO L499 BasicCegarLoop]: trace histogram [88, 4, 4, 2, 1, 1, 1, 1, 1] [2022-04-18 18:54:20,739 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 18:54:20,855 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-18 18:54:20,855 INFO L403 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE (and 25 more)] === [2022-04-18 18:54:20,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 18:54:20,856 INFO L85 PathProgramCache]: Analyzing trace with hash 278767587, now seen corresponding path program 5 times [2022-04-18 18:54:20,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-04-18 18:54:20,856 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51031413] [2022-04-18 18:54:20,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 18:54:20,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 18:54:23,528 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-18 18:54:23,529 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1907180999] [2022-04-18 18:54:23,529 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-04-18 18:54:23,529 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-18 18:54:23,529 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 [2022-04-18 18:54:23,530 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 18:54:23,531 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process Killed by 15