./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_90-arrayloop2_racing.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_90-arrayloop2_racing.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 f41f3c018db74ffccd5759d166eb9816a1bf73b1747e3e539ecb5bf51feb56af --- Real Ultimate output --- This is Ultimate 0.2.2-dev-efd9311-m [2022-04-18 18:45:03,785 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-04-18 18:45:03,786 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-04-18 18:45:03,810 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-04-18 18:45:03,810 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-04-18 18:45:03,811 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-04-18 18:45:03,812 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-04-18 18:45:03,813 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-04-18 18:45:03,814 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-04-18 18:45:03,815 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-04-18 18:45:03,816 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-04-18 18:45:03,818 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-04-18 18:45:03,818 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-04-18 18:45:03,822 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-04-18 18:45:03,823 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-04-18 18:45:03,824 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-04-18 18:45:03,825 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-04-18 18:45:03,826 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-04-18 18:45:03,827 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-04-18 18:45:03,833 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-04-18 18:45:03,834 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-04-18 18:45:03,835 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-04-18 18:45:03,836 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-04-18 18:45:03,836 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-04-18 18:45:03,837 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-04-18 18:45:03,841 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-04-18 18:45:03,841 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-04-18 18:45:03,842 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-04-18 18:45:03,842 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-04-18 18:45:03,843 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-04-18 18:45:03,844 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-04-18 18:45:03,844 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-04-18 18:45:03,845 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-04-18 18:45:03,845 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-04-18 18:45:03,845 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-04-18 18:45:03,846 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-04-18 18:45:03,846 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-04-18 18:45:03,847 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-04-18 18:45:03,847 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-04-18 18:45:03,847 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-04-18 18:45:03,847 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-04-18 18:45:03,848 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-04-18 18:45:03,849 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/config/svcomp-DataRace-32bit-Taipan_Default.epf [2022-04-18 18:45:03,862 INFO L113 SettingsManager]: Loading preferences was successful [2022-04-18 18:45:03,863 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-04-18 18:45:03,863 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-04-18 18:45:03,863 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-04-18 18:45:03,863 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-04-18 18:45:03,864 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-04-18 18:45:03,864 INFO L138 SettingsManager]: * User list type=DISABLED [2022-04-18 18:45:03,864 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-04-18 18:45:03,864 INFO L138 SettingsManager]: * Explicit value domain=true [2022-04-18 18:45:03,864 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-04-18 18:45:03,864 INFO L138 SettingsManager]: * Octagon Domain=false [2022-04-18 18:45:03,864 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-04-18 18:45:03,864 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-04-18 18:45:03,864 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-04-18 18:45:03,864 INFO L138 SettingsManager]: * Interval Domain=false [2022-04-18 18:45:03,865 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-04-18 18:45:03,865 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-04-18 18:45:03,865 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-04-18 18:45:03,865 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-04-18 18:45:03,865 INFO L138 SettingsManager]: * sizeof long=4 [2022-04-18 18:45:03,865 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-04-18 18:45:03,865 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-04-18 18:45:03,865 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-04-18 18:45:03,866 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-04-18 18:45:03,866 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-04-18 18:45:03,866 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-04-18 18:45:03,866 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-04-18 18:45:03,866 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-04-18 18:45:03,866 INFO L138 SettingsManager]: * sizeof long double=12 [2022-04-18 18:45:03,866 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-04-18 18:45:03,866 INFO L138 SettingsManager]: * Use constant arrays=true [2022-04-18 18:45:03,866 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-04-18 18:45:03,866 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-04-18 18:45:03,867 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-04-18 18:45:03,867 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-18 18:45:03,867 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-04-18 18:45:03,867 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-04-18 18:45:03,877 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-04-18 18:45:03,878 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-04-18 18:45:03,878 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-04-18 18:45:03,878 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-04-18 18:45:03,878 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-04-18 18:45:03,878 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-04-18 18:45:03,879 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UTaipan-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f41f3c018db74ffccd5759d166eb9816a1bf73b1747e3e539ecb5bf51feb56af [2022-04-18 18:45:04,061 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-04-18 18:45:04,084 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-04-18 18:45:04,086 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-04-18 18:45:04,086 INFO L271 PluginConnector]: Initializing CDTParser... [2022-04-18 18:45:04,087 INFO L275 PluginConnector]: CDTParser initialized [2022-04-18 18:45:04,088 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_90-arrayloop2_racing.i [2022-04-18 18:45:04,146 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/df4dd2cc7/169320c1701b427a8626de46898576e3/FLAG23a1c51af [2022-04-18 18:45:04,575 INFO L306 CDTParser]: Found 1 translation units. [2022-04-18 18:45:04,575 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_90-arrayloop2_racing.i [2022-04-18 18:45:04,594 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/df4dd2cc7/169320c1701b427a8626de46898576e3/FLAG23a1c51af [2022-04-18 18:45:04,924 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/df4dd2cc7/169320c1701b427a8626de46898576e3 [2022-04-18 18:45:04,926 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-04-18 18:45:04,927 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-04-18 18:45:04,942 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-04-18 18:45:04,942 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-04-18 18:45:04,946 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-04-18 18:45:04,946 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 06:45:04" (1/1) ... [2022-04-18 18:45:04,948 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@23140ad3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:45:04, skipping insertion in model container [2022-04-18 18:45:04,948 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 06:45:04" (1/1) ... [2022-04-18 18:45:04,953 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-04-18 18:45:04,985 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-04-18 18:45:05,315 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_90-arrayloop2_racing.i[47038,47051] [2022-04-18 18:45:05,337 WARN L1550 CHandler]: Possible shadowing of function new [2022-04-18 18:45:05,339 WARN L1550 CHandler]: Possible shadowing of function new [2022-04-18 18:45:05,341 WARN L1550 CHandler]: Possible shadowing of function new [2022-04-18 18:45:05,342 WARN L1550 CHandler]: Possible shadowing of function new [2022-04-18 18:45:05,392 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-18 18:45:05,408 INFO L203 MainTranslator]: Completed pre-run [2022-04-18 18:45:05,436 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_90-arrayloop2_racing.i[47038,47051] [2022-04-18 18:45:05,449 WARN L1550 CHandler]: Possible shadowing of function new [2022-04-18 18:45:05,449 WARN L1550 CHandler]: Possible shadowing of function new [2022-04-18 18:45:05,451 WARN L1550 CHandler]: Possible shadowing of function new [2022-04-18 18:45:05,452 WARN L1550 CHandler]: Possible shadowing of function new [2022-04-18 18:45:05,478 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-18 18:45:05,527 INFO L208 MainTranslator]: Completed translation [2022-04-18 18:45:05,528 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:45:05 WrapperNode [2022-04-18 18:45:05,528 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-04-18 18:45:05,529 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-04-18 18:45:05,529 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-04-18 18:45:05,530 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-04-18 18:45:05,534 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:45:05" (1/1) ... [2022-04-18 18:45:05,572 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:45:05" (1/1) ... [2022-04-18 18:45:05,615 INFO L137 Inliner]: procedures = 278, calls = 64, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 456 [2022-04-18 18:45:05,617 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-04-18 18:45:05,618 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-04-18 18:45:05,618 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-04-18 18:45:05,618 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-04-18 18:45:05,624 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:45:05" (1/1) ... [2022-04-18 18:45:05,624 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:45:05" (1/1) ... [2022-04-18 18:45:05,639 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:45:05" (1/1) ... [2022-04-18 18:45:05,639 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:45:05" (1/1) ... [2022-04-18 18:45:05,670 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:45:05" (1/1) ... [2022-04-18 18:45:05,674 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:45:05" (1/1) ... [2022-04-18 18:45:05,676 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:45:05" (1/1) ... [2022-04-18 18:45:05,680 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-04-18 18:45:05,681 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-04-18 18:45:05,681 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-04-18 18:45:05,681 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-04-18 18:45:05,682 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:45:05" (1/1) ... [2022-04-18 18:45:05,693 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-18 18:45:05,700 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 [2022-04-18 18:45:05,710 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 18:45:05,711 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 18:45:05,745 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-04-18 18:45:05,745 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-04-18 18:45:05,745 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2022-04-18 18:45:05,745 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2022-04-18 18:45:05,745 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-04-18 18:45:05,745 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-04-18 18:45:05,745 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2022-04-18 18:45:05,745 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2022-04-18 18:45:05,745 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-04-18 18:45:05,746 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-04-18 18:45:05,746 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-04-18 18:45:05,746 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-04-18 18:45:05,746 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-04-18 18:45:05,746 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-04-18 18:45:05,746 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-04-18 18:45:05,746 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-04-18 18:45:05,747 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 18:45:05,855 INFO L234 CfgBuilder]: Building ICFG [2022-04-18 18:45:05,856 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-04-18 18:45:06,350 INFO L275 CfgBuilder]: Performing block encoding [2022-04-18 18:45:06,358 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-04-18 18:45:06,358 INFO L299 CfgBuilder]: Removed 30 assume(true) statements. [2022-04-18 18:45:06,362 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 06:45:06 BoogieIcfgContainer [2022-04-18 18:45:06,363 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-04-18 18:45:06,364 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-04-18 18:45:06,364 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-04-18 18:45:06,366 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-04-18 18:45:06,367 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 06:45:04" (1/3) ... [2022-04-18 18:45:06,367 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a41e08c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 06:45:06, skipping insertion in model container [2022-04-18 18:45:06,368 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:45:05" (2/3) ... [2022-04-18 18:45:06,368 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a41e08c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 06:45:06, skipping insertion in model container [2022-04-18 18:45:06,368 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 06:45:06" (3/3) ... [2022-04-18 18:45:06,369 INFO L111 eAbstractionObserver]: Analyzing ICFG 28-race_reach_90-arrayloop2_racing.i [2022-04-18 18:45:06,372 WARN L147 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-04-18 18:45:06,373 INFO L202 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-04-18 18:45:06,373 INFO L161 ceAbstractionStarter]: Applying trace abstraction to program that has 26 error locations. [2022-04-18 18:45:06,374 INFO L504 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-04-18 18:45:06,446 INFO L135 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-04-18 18:45:06,476 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-18 18:45:06,480 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 18:45:06,480 INFO L341 AbstractCegarLoop]: Starting to check reachability of 42 error locations. [2022-04-18 18:45:06,500 INFO L116 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-04-18 18:45:06,511 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 457 places, 498 transitions, 1018 flow [2022-04-18 18:45:06,516 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 457 places, 498 transitions, 1018 flow [2022-04-18 18:45:06,517 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 457 places, 498 transitions, 1018 flow [2022-04-18 18:45:06,717 INFO L129 PetriNetUnfolder]: 77/775 cut-off events. [2022-04-18 18:45:06,717 INFO L130 PetriNetUnfolder]: For 8/12 co-relation queries the response was YES. [2022-04-18 18:45:06,731 INFO L84 FinitePrefix]: Finished finitePrefix Result has 795 conditions, 775 events. 77/775 cut-off events. For 8/12 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 3831 event pairs, 0 based on Foata normal form. 0/653 useless extension candidates. Maximal degree in co-relation 404. Up to 8 conditions per place. [2022-04-18 18:45:06,763 INFO L116 LiptonReduction]: Number of co-enabled transitions 67804 [2022-04-18 18:45:49,003 WARN L232 SmtUtils]: Spent 5.38s on a formula simplification that was a NOOP. DAG size: 144 (called from [L 279] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-04-18 18:45:55,075 WARN L232 SmtUtils]: Spent 6.07s on a formula simplification that was a NOOP. DAG size: 144 (called from [L 316] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-04-18 18:46:15,603 WARN L232 SmtUtils]: Spent 13.47s on a formula simplification that was a NOOP. DAG size: 142 (called from [L 279] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-04-18 18:46:26,441 WARN L232 SmtUtils]: Spent 10.84s on a formula simplification that was a NOOP. DAG size: 136 (called from [L 316] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-04-18 18:46:40,885 WARN L232 SmtUtils]: Spent 14.44s on a formula simplification that was a NOOP. DAG size: 142 (called from [L 279] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-04-18 18:46:51,885 WARN L232 SmtUtils]: Spent 11.00s on a formula simplification that was a NOOP. DAG size: 136 (called from [L 316] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-04-18 18:48:21,159 WARN L232 SmtUtils]: Spent 1.49m on a formula simplification that was a NOOP. DAG size: 262 (called from [L 279] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-04-18 18:49:31,464 WARN L232 SmtUtils]: Spent 1.17m 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 18:51:10,515 WARN L232 SmtUtils]: Spent 1.65m on a formula simplification that was a NOOP. DAG size: 262 (called from [L 279] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-04-18 18:53:18,451 WARN L232 SmtUtils]: Spent 2.13m 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 18:53:19,238 INFO L131 LiptonReduction]: Checked pairs total: 488078 [2022-04-18 18:53:19,240 INFO L133 LiptonReduction]: Total number of compositions: 456 [2022-04-18 18:53:19,249 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 171 places, 199 transitions, 420 flow [2022-04-18 18:53:21,441 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 85312 states, 84852 states have (on average 3.327582143025503) internal successors, (282352), 85311 states have internal predecessors, (282352), 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 18:53:21,564 INFO L276 IsEmpty]: Start isEmpty. Operand has 85312 states, 84852 states have (on average 3.327582143025503) internal successors, (282352), 85311 states have internal predecessors, (282352), 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 18:53:21,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-04-18 18:53:21,568 INFO L491 BasicCegarLoop]: Found error trace [2022-04-18 18:53:21,568 INFO L499 BasicCegarLoop]: trace histogram [1, 1] [2022-04-18 18:53:21,569 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [t2_funErr0ASSERT_VIOLATIONDATA_RACE, t2_funErr6ASSERT_VIOLATIONDATA_RACE, t2_funErr5ASSERT_VIOLATIONDATA_RACE, t2_funErr1ASSERT_VIOLATIONDATA_RACE (and 38 more)] === [2022-04-18 18:53:21,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 18:53:21,577 INFO L85 PathProgramCache]: Analyzing trace with hash 59766, now seen corresponding path program 1 times [2022-04-18 18:53:21,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-04-18 18:53:21,584 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025458905] [2022-04-18 18:53:21,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 18:53:21,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 18:53:21,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 18:53:21,715 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 18:53:21,715 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-04-18 18:53:21,715 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2025458905] [2022-04-18 18:53:21,716 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2025458905] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 18:53:21,716 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 18:53:21,716 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-04-18 18:53:21,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344363647] [2022-04-18 18:53:21,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 18:53:21,721 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-04-18 18:53:21,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-04-18 18:53:21,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-04-18 18:53:21,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-04-18 18:53:21,876 INFO L87 Difference]: Start difference. First operand has 85312 states, 84852 states have (on average 3.327582143025503) internal successors, (282352), 85311 states have internal predecessors, (282352), 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 18:53:23,945 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-04-18 18:53:25,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-18 18:53:25,547 INFO L93 Difference]: Finished difference Result 85302 states and 254245 transitions. [2022-04-18 18:53:25,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-04-18 18:53:25,558 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 18:53:25,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-18 18:53:26,200 INFO L225 Difference]: With dead ends: 85302 [2022-04-18 18:53:26,201 INFO L226 Difference]: Without dead ends: 85297 [2022-04-18 18:53:26,203 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 18:53:26,208 INFO L913 BasicCegarLoop]: 99 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-04-18 18:53:26,210 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 99 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 68 Invalid, 1 Unknown, 0 Unchecked, 2.4s Time] [2022-04-18 18:53:26,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85297 states. [2022-04-18 18:53:28,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85297 to 85297. [2022-04-18 18:53:28,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85297 states, 84852 states have (on average 2.9962287276669968) internal successors, (254236), 85296 states have internal predecessors, (254236), 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 18:53:29,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85297 states to 85297 states and 254236 transitions. [2022-04-18 18:53:29,326 INFO L78 Accepts]: Start accepts. Automaton has 85297 states and 254236 transitions. Word has length 2 [2022-04-18 18:53:29,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-18 18:53:29,327 INFO L478 AbstractCegarLoop]: Abstraction has 85297 states and 254236 transitions. [2022-04-18 18:53:29,327 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 18:53:29,327 INFO L276 IsEmpty]: Start isEmpty. Operand 85297 states and 254236 transitions. [2022-04-18 18:53:29,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-04-18 18:53:29,327 INFO L491 BasicCegarLoop]: Found error trace [2022-04-18 18:53:29,328 INFO L499 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1] [2022-04-18 18:53:29,328 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-04-18 18:53:29,328 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONDATA_RACE, t2_funErr6ASSERT_VIOLATIONDATA_RACE, t2_funErr5ASSERT_VIOLATIONDATA_RACE, t2_funErr1ASSERT_VIOLATIONDATA_RACE (and 38 more)] === [2022-04-18 18:53:29,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 18:53:29,329 INFO L85 PathProgramCache]: Analyzing trace with hash 882268380, now seen corresponding path program 1 times [2022-04-18 18:53:29,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-04-18 18:53:29,329 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1214181024] [2022-04-18 18:53:29,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 18:53:29,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 18:53:29,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 18:53:29,383 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 18:53:29,383 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-04-18 18:53:29,383 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1214181024] [2022-04-18 18:53:29,384 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1214181024] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 18:53:29,384 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 18:53:29,384 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 18:53:29,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336841669] [2022-04-18 18:53:29,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 18:53:29,386 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 18:53:29,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-04-18 18:53:29,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 18:53:29,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 18:53:29,389 INFO L87 Difference]: Start difference. First operand 85297 states and 254236 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 18:53:31,151 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.73s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-04-18 18:53:33,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-18 18:53:33,004 INFO L93 Difference]: Finished difference Result 85299 states and 254239 transitions. [2022-04-18 18:53:33,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 18:53:33,004 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 18:53:33,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-18 18:53:33,440 INFO L225 Difference]: With dead ends: 85299 [2022-04-18 18:53:33,441 INFO L226 Difference]: Without dead ends: 85299 [2022-04-18 18:53:33,441 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 18:53:33,442 INFO L913 BasicCegarLoop]: 99 mSDtfsCounter, 2 mSDsluCounter, 163 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 198 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-04-18 18:53:33,442 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 198 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-04-18 18:53:33,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85299 states. [2022-04-18 18:53:35,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85299 to 85298. [2022-04-18 18:53:35,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85298 states, 84853 states have (on average 2.9962052019374683) internal successors, (254237), 85297 states have internal predecessors, (254237), 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 18:53:35,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85298 states to 85298 states and 254237 transitions. [2022-04-18 18:53:35,902 INFO L78 Accepts]: Start accepts. Automaton has 85298 states and 254237 transitions. Word has length 7 [2022-04-18 18:53:35,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-18 18:53:35,902 INFO L478 AbstractCegarLoop]: Abstraction has 85298 states and 254237 transitions. [2022-04-18 18:53:35,903 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 18:53:35,903 INFO L276 IsEmpty]: Start isEmpty. Operand 85298 states and 254237 transitions. [2022-04-18 18:53:35,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-04-18 18:53:35,903 INFO L491 BasicCegarLoop]: Found error trace [2022-04-18 18:53:35,903 INFO L499 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 18:53:35,904 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-04-18 18:53:35,904 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONDATA_RACE, t2_funErr6ASSERT_VIOLATIONDATA_RACE, t2_funErr5ASSERT_VIOLATIONDATA_RACE, t2_funErr1ASSERT_VIOLATIONDATA_RACE (and 38 more)] === [2022-04-18 18:53:35,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 18:53:35,904 INFO L85 PathProgramCache]: Analyzing trace with hash -244055975, now seen corresponding path program 1 times [2022-04-18 18:53:35,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-04-18 18:53:35,904 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245019301] [2022-04-18 18:53:35,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 18:53:35,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 18:53:35,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 18:53:35,962 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 18:53:35,962 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-04-18 18:53:35,963 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245019301] [2022-04-18 18:53:35,963 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [245019301] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 18:53:35,963 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 18:53:35,963 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-18 18:53:35,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698541852] [2022-04-18 18:53:35,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 18:53:35,964 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 18:53:35,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-04-18 18:53:35,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 18:53:35,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 18:53:35,964 INFO L87 Difference]: Start difference. First operand 85298 states and 254237 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 18:53:38,020 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-04-18 18:53:38,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-18 18:53:38,923 INFO L93 Difference]: Finished difference Result 85299 states and 254238 transitions. [2022-04-18 18:53:38,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 18:53:38,923 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 18:53:38,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-18 18:53:39,265 INFO L225 Difference]: With dead ends: 85299 [2022-04-18 18:53:39,265 INFO L226 Difference]: Without dead ends: 85299 [2022-04-18 18:53:39,266 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 18:53:39,266 INFO L913 BasicCegarLoop]: 99 mSDtfsCounter, 0 mSDsluCounter, 164 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 198 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-04-18 18:53:39,267 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 198 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 135 Invalid, 1 Unknown, 0 Unchecked, 2.2s Time] [2022-04-18 18:53:39,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85299 states. [2022-04-18 18:53:41,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85299 to 85299. [2022-04-18 18:53:41,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85299 states, 84854 states have (on average 2.996181676762439) internal successors, (254238), 85298 states have internal predecessors, (254238), 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 18:53:41,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85299 states to 85299 states and 254238 transitions. [2022-04-18 18:53:41,829 INFO L78 Accepts]: Start accepts. Automaton has 85299 states and 254238 transitions. Word has length 9 [2022-04-18 18:53:41,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-18 18:53:41,829 INFO L478 AbstractCegarLoop]: Abstraction has 85299 states and 254238 transitions. [2022-04-18 18:53:41,829 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 18:53:41,829 INFO L276 IsEmpty]: Start isEmpty. Operand 85299 states and 254238 transitions. [2022-04-18 18:53:41,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-04-18 18:53:41,830 INFO L491 BasicCegarLoop]: Found error trace [2022-04-18 18:53:41,830 INFO L499 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 18:53:41,830 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-04-18 18:53:41,830 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONDATA_RACE, t2_funErr6ASSERT_VIOLATIONDATA_RACE, t2_funErr5ASSERT_VIOLATIONDATA_RACE, t2_funErr1ASSERT_VIOLATIONDATA_RACE (and 38 more)] === [2022-04-18 18:53:41,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 18:53:41,831 INFO L85 PathProgramCache]: Analyzing trace with hash -81838564, now seen corresponding path program 1 times [2022-04-18 18:53:41,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-04-18 18:53:41,831 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593303855] [2022-04-18 18:53:41,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 18:53:41,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 18:53:41,912 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-18 18:53:41,912 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1694168209] [2022-04-18 18:53:41,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 18:53:41,913 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-18 18:53:41,913 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 [2022-04-18 18:53:41,914 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 18:53:41,917 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 18:53:42,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 18:53:42,181 INFO L263 TraceCheckSpWp]: Trace formula consists of 1112 conjuncts, 3 conjunts are in the unsatisfiable core [2022-04-18 18:53:42,186 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-18 18:53:42,232 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 18:53:42,232 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-18 18:53:42,260 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 18:53:42,260 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-04-18 18:53:42,261 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593303855] [2022-04-18 18:53:42,261 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-18 18:53:42,262 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1694168209] [2022-04-18 18:53:42,262 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1694168209] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-18 18:53:42,262 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1375030590] [2022-04-18 18:53:42,268 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$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-04-18 18:53:42,271 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-04-18 18:53:42,271 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2022-04-18 18:53:42,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562960180] [2022-04-18 18:53:42,272 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-04-18 18:53:42,272 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-04-18 18:53:42,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-04-18 18:53:42,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-04-18 18:53:42,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-04-18 18:53:42,277 INFO L87 Difference]: Start difference. First operand 85299 states and 254238 transitions. Second operand has 6 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 18:53:46,210 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-04-18 18:53:47,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-18 18:53:47,184 INFO L93 Difference]: Finished difference Result 85302 states and 254241 transitions. [2022-04-18 18:53:47,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-04-18 18:53:47,184 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 18:53:47,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-18 18:53:47,527 INFO L225 Difference]: With dead ends: 85302 [2022-04-18 18:53:47,527 INFO L226 Difference]: Without dead ends: 85302 [2022-04-18 18:53:47,528 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 18:53:47,528 INFO L913 BasicCegarLoop]: 99 mSDtfsCounter, 0 mSDsluCounter, 492 mSDsCounter, 0 mSdLazyCounter, 274 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 396 SdHoareTripleChecker+Invalid, 277 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2022-04-18 18:53:47,528 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 396 Invalid, 277 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 274 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2022-04-18 18:53:47,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85302 states. [2022-04-18 18:53:49,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85302 to 85302. [2022-04-18 18:53:49,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85302 states, 84857 states have (on average 2.9961111045641493) internal successors, (254241), 85301 states have internal predecessors, (254241), 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 18:53:49,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85302 states to 85302 states and 254241 transitions. [2022-04-18 18:53:49,946 INFO L78 Accepts]: Start accepts. Automaton has 85302 states and 254241 transitions. Word has length 10 [2022-04-18 18:53:49,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-18 18:53:49,946 INFO L478 AbstractCegarLoop]: Abstraction has 85302 states and 254241 transitions. [2022-04-18 18:53:49,946 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 18:53:49,946 INFO L276 IsEmpty]: Start isEmpty. Operand 85302 states and 254241 transitions. [2022-04-18 18:53:49,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-04-18 18:53:49,947 INFO L491 BasicCegarLoop]: Found error trace [2022-04-18 18:53:49,947 INFO L499 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 18:53:49,965 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-04-18 18:53:50,148 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 18:53:50,149 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONDATA_RACE, t2_funErr6ASSERT_VIOLATIONDATA_RACE, t2_funErr5ASSERT_VIOLATIONDATA_RACE, t2_funErr1ASSERT_VIOLATIONDATA_RACE (and 38 more)] === [2022-04-18 18:53:50,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 18:53:50,150 INFO L85 PathProgramCache]: Analyzing trace with hash -1590240999, now seen corresponding path program 2 times [2022-04-18 18:53:50,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-04-18 18:53:50,150 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078611931] [2022-04-18 18:53:50,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 18:53:50,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 18:53:50,284 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-18 18:53:50,284 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [480553074] [2022-04-18 18:53:50,284 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-04-18 18:53:50,285 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-18 18:53:50,285 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 [2022-04-18 18:53:50,286 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 18:53:50,322 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 18:53:50,683 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-04-18 18:53:50,683 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-18 18:53:50,686 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 3 conjunts are in the unsatisfiable core [2022-04-18 18:53:50,689 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-18 18:53:50,718 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 18:53:50,719 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-18 18:53:50,754 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 18:53:50,754 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-04-18 18:53:50,754 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078611931] [2022-04-18 18:53:50,754 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-18 18:53:50,755 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [480553074] [2022-04-18 18:53:50,755 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [480553074] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-18 18:53:50,755 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [926775147] [2022-04-18 18:53:50,756 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$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-04-18 18:53:50,757 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-04-18 18:53:50,757 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2022-04-18 18:53:50,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549164519] [2022-04-18 18:53:50,758 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-04-18 18:53:50,758 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-04-18 18:53:50,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-04-18 18:53:50,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-04-18 18:53:50,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-04-18 18:53:50,761 INFO L87 Difference]: Start difference. First operand 85302 states and 254241 transitions. Second operand has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 18:53:52,704 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-04-18 18:53:54,130 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-04-18 18:53:54,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-18 18:53:54,968 INFO L93 Difference]: Finished difference Result 85320 states and 254262 transitions. [2022-04-18 18:53:54,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-04-18 18:53:54,969 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 18:53:54,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-18 18:53:55,282 INFO L225 Difference]: With dead ends: 85320 [2022-04-18 18:53:55,282 INFO L226 Difference]: Without dead ends: 85320 [2022-04-18 18:53:55,282 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 18:53:55,283 INFO L913 BasicCegarLoop]: 99 mSDtfsCounter, 12 mSDsluCounter, 163 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 198 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2022-04-18 18:53:55,283 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 198 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2022-04-18 18:53:55,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85320 states. [2022-04-18 18:53:57,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85320 to 85320. [2022-04-18 18:53:57,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85320 states, 84875 states have (on average 2.9957231222385863) internal successors, (254262), 85319 states have internal predecessors, (254262), 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 18:53:57,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85320 states to 85320 states and 254262 transitions. [2022-04-18 18:53:57,834 INFO L78 Accepts]: Start accepts. Automaton has 85320 states and 254262 transitions. Word has length 13 [2022-04-18 18:53:57,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-18 18:53:57,834 INFO L478 AbstractCegarLoop]: Abstraction has 85320 states and 254262 transitions. [2022-04-18 18:53:57,834 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 18:53:57,834 INFO L276 IsEmpty]: Start isEmpty. Operand 85320 states and 254262 transitions. [2022-04-18 18:53:57,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-04-18 18:53:57,835 INFO L491 BasicCegarLoop]: Found error trace [2022-04-18 18:53:57,835 INFO L499 BasicCegarLoop]: trace histogram [16, 4, 4, 2, 1, 1, 1, 1, 1] [2022-04-18 18:53:57,852 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 18:53:58,040 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 18:53:58,040 INFO L403 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONDATA_RACE, t2_funErr6ASSERT_VIOLATIONDATA_RACE, t2_funErr5ASSERT_VIOLATIONDATA_RACE, t2_funErr1ASSERT_VIOLATIONDATA_RACE (and 38 more)] === [2022-04-18 18:53:58,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 18:53:58,041 INFO L85 PathProgramCache]: Analyzing trace with hash 1518751568, now seen corresponding path program 3 times [2022-04-18 18:53:58,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-04-18 18:53:58,042 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653862086] [2022-04-18 18:53:58,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 18:53:58,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 18:53:58,498 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-18 18:53:58,499 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1959169282] [2022-04-18 18:53:58,499 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-04-18 18:53:58,499 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-18 18:53:58,499 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 [2022-04-18 18:53:58,500 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 18:53:58,501 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 18:54:01,702 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-04-18 18:54:01,703 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-18 18:54:01,825 INFO L263 TraceCheckSpWp]: Trace formula consists of 15425 conjuncts, 6 conjunts are in the unsatisfiable core [2022-04-18 18:54:01,836 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-18 18:54:01,905 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 18:54:01,905 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-18 18:54:02,001 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 18:54:02,001 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-04-18 18:54:02,001 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [653862086] [2022-04-18 18:54:02,001 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-18 18:54:02,002 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1959169282] [2022-04-18 18:54:02,002 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1959169282] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-18 18:54:02,002 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1308765222] [2022-04-18 18:54:02,002 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$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-04-18 18:54:02,002 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-04-18 18:54:02,002 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2022-04-18 18:54:02,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079991670] [2022-04-18 18:54:02,002 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-04-18 18:54:02,003 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-04-18 18:54:02,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-04-18 18:54:02,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-04-18 18:54:02,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2022-04-18 18:54:02,003 INFO L87 Difference]: Start difference. First operand 85320 states and 254262 transitions. Second operand has 12 states, 12 states have (on average 1.75) internal successors, (21), 12 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 18:54:03,617 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.56s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-04-18 18:54:10,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-18 18:54:10,053 INFO L93 Difference]: Finished difference Result 85344 states and 254286 transitions. [2022-04-18 18:54:10,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-04-18 18:54:10,053 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 18:54:10,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-18 18:54:10,340 INFO L225 Difference]: With dead ends: 85344 [2022-04-18 18:54:10,340 INFO L226 Difference]: Without dead ends: 85344 [2022-04-18 18:54:10,340 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 18:54:10,340 INFO L913 BasicCegarLoop]: 99 mSDtfsCounter, 0 mSDsluCounter, 492 mSDsCounter, 0 mSdLazyCounter, 280 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 396 SdHoareTripleChecker+Invalid, 289 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 280 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.4s IncrementalHoareTripleChecker+Time [2022-04-18 18:54:10,341 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 396 Invalid, 289 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 280 Invalid, 0 Unknown, 0 Unchecked, 7.4s Time] [2022-04-18 18:54:10,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85344 states. [2022-04-18 18:54:12,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85344 to 85344. [2022-04-18 18:54:12,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85344 states, 84899 states have (on average 2.9951589535801366) internal successors, (254286), 85343 states have internal predecessors, (254286), 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 18:54:12,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85344 states to 85344 states and 254286 transitions. [2022-04-18 18:54:12,748 INFO L78 Accepts]: Start accepts. Automaton has 85344 states and 254286 transitions. Word has length 31 [2022-04-18 18:54:12,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-18 18:54:12,748 INFO L478 AbstractCegarLoop]: Abstraction has 85344 states and 254286 transitions. [2022-04-18 18:54:12,749 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 18:54:12,749 INFO L276 IsEmpty]: Start isEmpty. Operand 85344 states and 254286 transitions. [2022-04-18 18:54:12,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-04-18 18:54:12,750 INFO L491 BasicCegarLoop]: Found error trace [2022-04-18 18:54:12,750 INFO L499 BasicCegarLoop]: trace histogram [40, 4, 4, 2, 1, 1, 1, 1, 1] [2022-04-18 18:54:12,797 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 18:54:12,967 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 18:54:12,968 INFO L403 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONDATA_RACE, t2_funErr6ASSERT_VIOLATIONDATA_RACE, t2_funErr5ASSERT_VIOLATIONDATA_RACE, t2_funErr1ASSERT_VIOLATIONDATA_RACE (and 38 more)] === [2022-04-18 18:54:12,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 18:54:12,969 INFO L85 PathProgramCache]: Analyzing trace with hash -1886140080, now seen corresponding path program 4 times [2022-04-18 18:54:12,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-04-18 18:54:12,970 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1473155168] [2022-04-18 18:54:12,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 18:54:12,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 18:54:14,056 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-18 18:54:14,056 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [990562427] [2022-04-18 18:54:14,056 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-04-18 18:54:14,057 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-18 18:54:14,057 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 [2022-04-18 18:54:14,058 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 18:54:14,059 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 18:54:22,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 18:54:22,714 INFO L263 TraceCheckSpWp]: Trace formula consists of 38057 conjuncts, 12 conjunts are in the unsatisfiable core [2022-04-18 18:54:22,735 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-18 18:54:22,900 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 18:54:22,900 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-18 18:54:23,163 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 18:54:23,163 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-04-18 18:54:23,163 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1473155168] [2022-04-18 18:54:23,163 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-18 18:54:23,163 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [990562427] [2022-04-18 18:54:23,163 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [990562427] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-18 18:54:23,163 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [222834515] [2022-04-18 18:54:23,163 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$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-04-18 18:54:23,164 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-04-18 18:54:23,164 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2022-04-18 18:54:23,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661142989] [2022-04-18 18:54:23,164 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-04-18 18:54:23,164 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-04-18 18:54:23,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-04-18 18:54:23,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-04-18 18:54:23,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2022-04-18 18:54:23,165 INFO L87 Difference]: Start difference. First operand 85344 states and 254286 transitions. Second operand has 24 states, 24 states have (on average 1.375) internal successors, (33), 24 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 18:54:31,698 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.45s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-04-18 18:54:33,940 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.85s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-04-18 18:54:35,972 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-04-18 18:54:38,478 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.35s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-04-18 18:54:40,415 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.94s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-04-18 18:54:43,285 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-04-18 18:54:44,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-18 18:54:44,150 INFO L93 Difference]: Finished difference Result 85392 states and 254334 transitions. [2022-04-18 18:54:44,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-04-18 18:54:44,151 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 18:54:44,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-18 18:54:44,450 INFO L225 Difference]: With dead ends: 85392 [2022-04-18 18:54:44,450 INFO L226 Difference]: Without dead ends: 85392 [2022-04-18 18:54:44,450 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 18:54:44,452 INFO L913 BasicCegarLoop]: 99 mSDtfsCounter, 0 mSDsluCounter, 820 mSDsCounter, 0 mSdLazyCounter, 425 mSolverCounterSat, 14 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 594 SdHoareTripleChecker+Invalid, 440 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 425 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.3s IncrementalHoareTripleChecker+Time [2022-04-18 18:54:44,452 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 594 Invalid, 440 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 425 Invalid, 1 Unknown, 0 Unchecked, 20.3s Time] [2022-04-18 18:54:44,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85392 states. [2022-04-18 18:54:46,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85392 to 85392. [2022-04-18 18:54:46,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85392 states, 84947 states have (on average 2.9940315726276383) internal successors, (254334), 85391 states have internal predecessors, (254334), 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 18:54:46,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85392 states to 85392 states and 254334 transitions. [2022-04-18 18:54:46,852 INFO L78 Accepts]: Start accepts. Automaton has 85392 states and 254334 transitions. Word has length 55 [2022-04-18 18:54:46,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-18 18:54:46,852 INFO L478 AbstractCegarLoop]: Abstraction has 85392 states and 254334 transitions. [2022-04-18 18:54:46,852 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 18:54:46,852 INFO L276 IsEmpty]: Start isEmpty. Operand 85392 states and 254334 transitions. [2022-04-18 18:54:46,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-04-18 18:54:46,854 INFO L491 BasicCegarLoop]: Found error trace [2022-04-18 18:54:46,854 INFO L499 BasicCegarLoop]: trace histogram [88, 4, 4, 2, 1, 1, 1, 1, 1] [2022-04-18 18:54:46,963 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 18:54:47,067 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 18:54:47,067 INFO L403 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONDATA_RACE, t2_funErr6ASSERT_VIOLATIONDATA_RACE, t2_funErr5ASSERT_VIOLATIONDATA_RACE, t2_funErr1ASSERT_VIOLATIONDATA_RACE (and 38 more)] === [2022-04-18 18:54:47,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 18:54:47,068 INFO L85 PathProgramCache]: Analyzing trace with hash 1122983248, now seen corresponding path program 5 times [2022-04-18 18:54:47,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-04-18 18:54:47,068 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004591409] [2022-04-18 18:54:47,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 18:54:47,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 18:54:49,730 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-18 18:54:49,731 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1033064540] [2022-04-18 18:54:49,731 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-04-18 18:54:49,731 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-18 18:54:49,731 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 [2022-04-18 18:54:49,732 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 18:54:49,733 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