./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-data-race.prp --file ../../../trunk/examples/svcomp/pthread-ext/11_fmaxsymopt.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/pthread-ext/11_fmaxsymopt.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! data-race) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 963498115a8eca6e92c68ab7fa8168826446f05b9b398350c3ee0745adf1bb45 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-28 17:54:32,001 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-28 17:54:32,004 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-28 17:54:32,044 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-28 17:54:32,045 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-28 17:54:32,048 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-28 17:54:32,049 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-28 17:54:32,051 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-28 17:54:32,053 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-28 17:54:32,058 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-28 17:54:32,059 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-28 17:54:32,061 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-28 17:54:32,061 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-28 17:54:32,063 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-28 17:54:32,064 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-28 17:54:32,067 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-28 17:54:32,068 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-28 17:54:32,069 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-28 17:54:32,071 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-28 17:54:32,075 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-28 17:54:32,084 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-28 17:54:32,085 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-28 17:54:32,086 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-28 17:54:32,087 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-28 17:54:32,094 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-28 17:54:32,094 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-28 17:54:32,094 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-28 17:54:32,096 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-28 17:54:32,096 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-28 17:54:32,098 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-28 17:54:32,099 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-28 17:54:32,100 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-28 17:54:32,101 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-28 17:54:32,102 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-28 17:54:32,103 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-28 17:54:32,103 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-28 17:54:32,104 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-28 17:54:32,104 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-28 17:54:32,104 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-28 17:54:32,105 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-28 17:54:32,106 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-28 17:54:32,107 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf [2023-08-28 17:54:32,140 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-28 17:54:32,140 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-28 17:54:32,141 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-28 17:54:32,142 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-28 17:54:32,142 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-28 17:54:32,143 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-28 17:54:32,143 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-28 17:54:32,143 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-28 17:54:32,143 INFO L138 SettingsManager]: * Use SBE=true [2023-08-28 17:54:32,144 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-28 17:54:32,145 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-28 17:54:32,145 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-28 17:54:32,145 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-28 17:54:32,145 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-28 17:54:32,145 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-28 17:54:32,146 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-28 17:54:32,146 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-28 17:54:32,146 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-28 17:54:32,146 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-08-28 17:54:32,146 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-28 17:54:32,146 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-28 17:54:32,147 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-28 17:54:32,147 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-28 17:54:32,147 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-28 17:54:32,147 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-28 17:54:32,147 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-28 17:54:32,148 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-28 17:54:32,148 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-28 17:54:32,148 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-28 17:54:32,148 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-28 17:54:32,148 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-28 17:54:32,149 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-28 17:54:32,149 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-28 17:54:32,149 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-28 17:54:32,149 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-28 17:54:32,150 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-28 17:54:32,150 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-28 17:54:32,150 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 963498115a8eca6e92c68ab7fa8168826446f05b9b398350c3ee0745adf1bb45 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-28 17:54:32,449 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-28 17:54:32,466 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-28 17:54:32,468 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-28 17:54:32,469 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-28 17:54:32,470 INFO L275 PluginConnector]: CDTParser initialized [2023-08-28 17:54:32,471 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-ext/11_fmaxsymopt.i [2023-08-28 17:54:33,639 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-28 17:54:33,872 INFO L351 CDTParser]: Found 1 translation units. [2023-08-28 17:54:33,873 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/11_fmaxsymopt.i [2023-08-28 17:54:33,883 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0a9d05524/b0c221179233470c9a62ab884dc73dda/FLAG33ab1dc75 [2023-08-28 17:54:33,895 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0a9d05524/b0c221179233470c9a62ab884dc73dda [2023-08-28 17:54:33,897 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-28 17:54:33,898 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-28 17:54:33,899 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-28 17:54:33,899 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-28 17:54:33,905 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-28 17:54:33,906 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.08 05:54:33" (1/1) ... [2023-08-28 17:54:33,907 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@28c928b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 05:54:33, skipping insertion in model container [2023-08-28 17:54:33,907 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.08 05:54:33" (1/1) ... [2023-08-28 17:54:33,913 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-28 17:54:33,960 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-28 17:54:34,189 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/11_fmaxsymopt.i[30540,30553] [2023-08-28 17:54:34,200 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-28 17:54:34,211 INFO L203 MainTranslator]: Completed pre-run [2023-08-28 17:54:34,275 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/11_fmaxsymopt.i[30540,30553] [2023-08-28 17:54:34,302 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-28 17:54:34,341 INFO L208 MainTranslator]: Completed translation [2023-08-28 17:54:34,342 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 05:54:34 WrapperNode [2023-08-28 17:54:34,342 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-28 17:54:34,343 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-28 17:54:34,344 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-28 17:54:34,344 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-28 17:54:34,350 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 05:54:34" (1/1) ... [2023-08-28 17:54:34,379 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 05:54:34" (1/1) ... [2023-08-28 17:54:34,411 INFO L138 Inliner]: procedures = 171, calls = 24, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 108 [2023-08-28 17:54:34,411 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-28 17:54:34,413 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-28 17:54:34,413 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-28 17:54:34,414 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-28 17:54:34,421 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 05:54:34" (1/1) ... [2023-08-28 17:54:34,421 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 05:54:34" (1/1) ... [2023-08-28 17:54:34,430 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 05:54:34" (1/1) ... [2023-08-28 17:54:34,431 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 05:54:34" (1/1) ... [2023-08-28 17:54:34,443 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 05:54:34" (1/1) ... [2023-08-28 17:54:34,452 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 05:54:34" (1/1) ... [2023-08-28 17:54:34,454 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 05:54:34" (1/1) ... [2023-08-28 17:54:34,459 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 05:54:34" (1/1) ... [2023-08-28 17:54:34,466 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-28 17:54:34,467 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-28 17:54:34,467 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-28 17:54:34,467 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-28 17:54:34,468 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 05:54:34" (1/1) ... [2023-08-28 17:54:34,473 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-28 17:54:34,484 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-28 17:54:34,498 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-28 17:54:34,525 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-28 17:54:34,540 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-28 17:54:34,540 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2023-08-28 17:54:34,540 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2023-08-28 17:54:34,540 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-28 17:54:34,540 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-28 17:54:34,541 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-28 17:54:34,541 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-28 17:54:34,541 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-28 17:54:34,541 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-28 17:54:34,541 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-28 17:54:34,542 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-28 17:54:34,700 INFO L236 CfgBuilder]: Building ICFG [2023-08-28 17:54:34,702 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-28 17:54:34,888 INFO L277 CfgBuilder]: Performing block encoding [2023-08-28 17:54:34,964 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-28 17:54:34,964 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-08-28 17:54:34,966 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.08 05:54:34 BoogieIcfgContainer [2023-08-28 17:54:34,966 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-28 17:54:34,970 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-28 17:54:34,971 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-28 17:54:34,973 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-28 17:54:34,974 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.08 05:54:33" (1/3) ... [2023-08-28 17:54:34,974 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77464067 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.08 05:54:34, skipping insertion in model container [2023-08-28 17:54:34,974 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 05:54:34" (2/3) ... [2023-08-28 17:54:34,975 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77464067 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.08 05:54:34, skipping insertion in model container [2023-08-28 17:54:34,975 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.08 05:54:34" (3/3) ... [2023-08-28 17:54:34,977 INFO L112 eAbstractionObserver]: Analyzing ICFG 11_fmaxsymopt.i [2023-08-28 17:54:34,984 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-28 17:54:34,992 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-28 17:54:34,992 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2023-08-28 17:54:34,992 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-28 17:54:35,045 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-28 17:54:35,075 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 93 places, 98 transitions, 201 flow [2023-08-28 17:54:35,123 INFO L130 PetriNetUnfolder]: 9/108 cut-off events. [2023-08-28 17:54:35,128 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-28 17:54:35,135 INFO L83 FinitePrefix]: Finished finitePrefix Result has 113 conditions, 108 events. 9/108 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 147 event pairs, 0 based on Foata normal form. 0/89 useless extension candidates. Maximal degree in co-relation 76. Up to 4 conditions per place. [2023-08-28 17:54:35,136 INFO L82 GeneralOperation]: Start removeDead. Operand has 93 places, 98 transitions, 201 flow [2023-08-28 17:54:35,143 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 93 places, 98 transitions, 201 flow [2023-08-28 17:54:35,148 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-28 17:54:35,171 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 93 places, 98 transitions, 201 flow [2023-08-28 17:54:35,174 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 93 places, 98 transitions, 201 flow [2023-08-28 17:54:35,179 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 93 places, 98 transitions, 201 flow [2023-08-28 17:54:35,208 INFO L130 PetriNetUnfolder]: 9/108 cut-off events. [2023-08-28 17:54:35,208 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-28 17:54:35,209 INFO L83 FinitePrefix]: Finished finitePrefix Result has 113 conditions, 108 events. 9/108 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 147 event pairs, 0 based on Foata normal form. 0/89 useless extension candidates. Maximal degree in co-relation 76. Up to 4 conditions per place. [2023-08-28 17:54:35,210 INFO L119 LiptonReduction]: Number of co-enabled transitions 1664 [2023-08-28 17:54:38,027 INFO L134 LiptonReduction]: Checked pairs total: 1488 [2023-08-28 17:54:38,027 INFO L136 LiptonReduction]: Total number of compositions: 108 [2023-08-28 17:54:38,039 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-28 17:54:38,045 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@222e7465, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-28 17:54:38,045 INFO L358 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2023-08-28 17:54:38,049 INFO L130 PetriNetUnfolder]: 1/9 cut-off events. [2023-08-28 17:54:38,049 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-28 17:54:38,049 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-28 17:54:38,050 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-28 17:54:38,050 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err1ASSERT_VIOLATIONDATA_RACE === [thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err6ASSERT_VIOLATIONDATA_RACE, thr1Err7ASSERT_VIOLATIONDATA_RACE, thr1Err4ASSERT_VIOLATIONDATA_RACE (and 12 more)] === [2023-08-28 17:54:38,054 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-28 17:54:38,055 INFO L85 PathProgramCache]: Analyzing trace with hash 479707986, now seen corresponding path program 1 times [2023-08-28 17:54:38,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-28 17:54:38,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [190466384] [2023-08-28 17:54:38,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-28 17:54:38,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-28 17:54:38,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-28 17:54:38,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-28 17:54:38,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-28 17:54:38,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [190466384] [2023-08-28 17:54:38,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [190466384] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-28 17:54:38,270 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-28 17:54:38,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-28 17:54:38,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808628035] [2023-08-28 17:54:38,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-28 17:54:38,279 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-28 17:54:38,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-28 17:54:38,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-28 17:54:38,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-28 17:54:38,304 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 206 [2023-08-28 17:54:38,306 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 19 places, 17 transitions, 39 flow. Second operand has 2 states, 2 states have (on average 87.5) internal successors, (175), 2 states have internal predecessors, (175), 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) [2023-08-28 17:54:38,306 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-28 17:54:38,306 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 206 [2023-08-28 17:54:38,307 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-28 17:54:38,329 INFO L130 PetriNetUnfolder]: 7/19 cut-off events. [2023-08-28 17:54:38,330 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-28 17:54:38,330 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43 conditions, 19 events. 7/19 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 23 event pairs, 4 based on Foata normal form. 0/16 useless extension candidates. Maximal degree in co-relation 30. Up to 19 conditions per place. [2023-08-28 17:54:38,331 INFO L137 encePairwiseOnDemand]: 197/206 looper letters, 0 selfloop transitions, 0 changer transitions 8/8 dead transitions. [2023-08-28 17:54:38,331 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 11 places, 8 transitions, 35 flow [2023-08-28 17:54:38,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-28 17:54:38,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-28 17:54:38,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 186 transitions. [2023-08-28 17:54:38,343 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45145631067961167 [2023-08-28 17:54:38,344 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 186 transitions. [2023-08-28 17:54:38,344 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 186 transitions. [2023-08-28 17:54:38,345 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-28 17:54:38,347 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 186 transitions. [2023-08-28 17:54:38,350 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 93.0) internal successors, (186), 2 states have internal predecessors, (186), 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) [2023-08-28 17:54:38,354 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 206.0) internal successors, (618), 3 states have internal predecessors, (618), 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) [2023-08-28 17:54:38,354 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 206.0) internal successors, (618), 3 states have internal predecessors, (618), 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) [2023-08-28 17:54:38,356 INFO L175 Difference]: Start difference. First operand has 19 places, 17 transitions, 39 flow. Second operand 2 states and 186 transitions. [2023-08-28 17:54:38,357 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 11 places, 8 transitions, 35 flow [2023-08-28 17:54:38,358 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 11 places, 8 transitions, 35 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-28 17:54:38,359 INFO L231 Difference]: Finished difference. Result has 11 places, 0 transitions, 0 flow [2023-08-28 17:54:38,360 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=21, PETRI_DIFFERENCE_MINUEND_PLACES=10, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=8, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=8, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=0, PETRI_PLACES=11, PETRI_TRANSITIONS=0} [2023-08-28 17:54:38,363 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, -8 predicate places. [2023-08-28 17:54:38,364 INFO L495 AbstractCegarLoop]: Abstraction has has 11 places, 0 transitions, 0 flow [2023-08-28 17:54:38,364 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 87.5) internal successors, (175), 2 states have internal predecessors, (175), 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) [2023-08-28 17:54:38,366 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err3ASSERT_VIOLATIONDATA_RACE (15 of 16 remaining) [2023-08-28 17:54:38,366 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err6ASSERT_VIOLATIONDATA_RACE (14 of 16 remaining) [2023-08-28 17:54:38,367 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err7ASSERT_VIOLATIONDATA_RACE (13 of 16 remaining) [2023-08-28 17:54:38,367 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err4ASSERT_VIOLATIONDATA_RACE (12 of 16 remaining) [2023-08-28 17:54:38,367 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err2ASSERT_VIOLATIONDATA_RACE (11 of 16 remaining) [2023-08-28 17:54:38,367 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err5ASSERT_VIOLATIONDATA_RACE (10 of 16 remaining) [2023-08-28 17:54:38,368 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err7ASSERT_VIOLATIONDATA_RACE (9 of 16 remaining) [2023-08-28 17:54:38,368 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err5ASSERT_VIOLATIONDATA_RACE (8 of 16 remaining) [2023-08-28 17:54:38,368 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err1ASSERT_VIOLATIONDATA_RACE (7 of 16 remaining) [2023-08-28 17:54:38,368 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err4ASSERT_VIOLATIONDATA_RACE (6 of 16 remaining) [2023-08-28 17:54:38,369 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err6ASSERT_VIOLATIONDATA_RACE (5 of 16 remaining) [2023-08-28 17:54:38,369 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err2ASSERT_VIOLATIONDATA_RACE (4 of 16 remaining) [2023-08-28 17:54:38,369 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err1ASSERT_VIOLATIONDATA_RACE (3 of 16 remaining) [2023-08-28 17:54:38,369 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err3ASSERT_VIOLATIONDATA_RACE (2 of 16 remaining) [2023-08-28 17:54:38,370 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONDATA_RACE (1 of 16 remaining) [2023-08-28 17:54:38,370 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONDATA_RACE (0 of 16 remaining) [2023-08-28 17:54:38,370 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-28 17:54:38,370 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-28 17:54:38,373 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE (1/2) [2023-08-28 17:54:38,379 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 93 places, 98 transitions, 201 flow [2023-08-28 17:54:38,392 INFO L130 PetriNetUnfolder]: 9/108 cut-off events. [2023-08-28 17:54:38,393 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-28 17:54:38,393 INFO L83 FinitePrefix]: Finished finitePrefix Result has 113 conditions, 108 events. 9/108 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 147 event pairs, 0 based on Foata normal form. 0/89 useless extension candidates. Maximal degree in co-relation 76. Up to 4 conditions per place. [2023-08-28 17:54:38,394 INFO L82 GeneralOperation]: Start removeDead. Operand has 93 places, 98 transitions, 201 flow [2023-08-28 17:54:38,394 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 93 places, 98 transitions, 201 flow [2023-08-28 17:54:38,395 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-28 17:54:38,395 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 93 places, 98 transitions, 201 flow [2023-08-28 17:54:38,395 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 93 places, 98 transitions, 201 flow [2023-08-28 17:54:38,395 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 93 places, 98 transitions, 201 flow [2023-08-28 17:54:38,415 INFO L130 PetriNetUnfolder]: 9/108 cut-off events. [2023-08-28 17:54:38,417 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-28 17:54:38,418 INFO L83 FinitePrefix]: Finished finitePrefix Result has 113 conditions, 108 events. 9/108 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 147 event pairs, 0 based on Foata normal form. 0/89 useless extension candidates. Maximal degree in co-relation 76. Up to 4 conditions per place. [2023-08-28 17:54:38,420 INFO L119 LiptonReduction]: Number of co-enabled transitions 1664 [2023-08-28 17:54:40,870 INFO L134 LiptonReduction]: Checked pairs total: 1489 [2023-08-28 17:54:40,870 INFO L136 LiptonReduction]: Total number of compositions: 109 [2023-08-28 17:54:40,872 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-28 17:54:40,873 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@222e7465, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-28 17:54:40,873 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-28 17:54:40,876 INFO L130 PetriNetUnfolder]: 1/18 cut-off events. [2023-08-28 17:54:40,876 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-28 17:54:40,877 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-28 17:54:40,877 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-28 17:54:40,877 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-28 17:54:40,877 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-28 17:54:40,878 INFO L85 PathProgramCache]: Analyzing trace with hash 971455568, now seen corresponding path program 1 times [2023-08-28 17:54:40,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-28 17:54:40,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416396128] [2023-08-28 17:54:40,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-28 17:54:40,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-28 17:54:40,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-28 17:54:40,905 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-28 17:54:40,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-28 17:54:40,931 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-28 17:54:40,931 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-28 17:54:40,931 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-28 17:54:40,932 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-28 17:54:40,932 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-28 17:54:40,932 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (2/2) [2023-08-28 17:54:40,933 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-28 17:54:40,933 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-28 17:54:40,957 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-28 17:54:40,961 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 153 places, 163 transitions, 338 flow [2023-08-28 17:54:40,982 INFO L130 PetriNetUnfolder]: 17/185 cut-off events. [2023-08-28 17:54:40,983 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-28 17:54:40,985 INFO L83 FinitePrefix]: Finished finitePrefix Result has 195 conditions, 185 events. 17/185 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 445 event pairs, 0 based on Foata normal form. 0/149 useless extension candidates. Maximal degree in co-relation 140. Up to 6 conditions per place. [2023-08-28 17:54:40,985 INFO L82 GeneralOperation]: Start removeDead. Operand has 153 places, 163 transitions, 338 flow [2023-08-28 17:54:40,987 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 153 places, 163 transitions, 338 flow [2023-08-28 17:54:40,987 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-28 17:54:40,987 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 153 places, 163 transitions, 338 flow [2023-08-28 17:54:40,988 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 153 places, 163 transitions, 338 flow [2023-08-28 17:54:40,988 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 153 places, 163 transitions, 338 flow [2023-08-28 17:54:41,010 INFO L130 PetriNetUnfolder]: 17/185 cut-off events. [2023-08-28 17:54:41,012 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-28 17:54:41,015 INFO L83 FinitePrefix]: Finished finitePrefix Result has 195 conditions, 185 events. 17/185 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 445 event pairs, 0 based on Foata normal form. 0/149 useless extension candidates. Maximal degree in co-relation 140. Up to 6 conditions per place. [2023-08-28 17:54:41,023 INFO L119 LiptonReduction]: Number of co-enabled transitions 11648 [2023-08-28 17:54:43,508 INFO L134 LiptonReduction]: Checked pairs total: 35072 [2023-08-28 17:54:43,508 INFO L136 LiptonReduction]: Total number of compositions: 133 [2023-08-28 17:54:43,510 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-28 17:54:43,511 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@222e7465, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-28 17:54:43,511 INFO L358 AbstractCegarLoop]: Starting to check reachability of 24 error locations. [2023-08-28 17:54:43,513 INFO L130 PetriNetUnfolder]: 0/9 cut-off events. [2023-08-28 17:54:43,513 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-28 17:54:43,513 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-28 17:54:43,514 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-28 17:54:43,514 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err1ASSERT_VIOLATIONDATA_RACE === [thr1Err5ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2023-08-28 17:54:43,514 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-28 17:54:43,514 INFO L85 PathProgramCache]: Analyzing trace with hash 930678931, now seen corresponding path program 1 times [2023-08-28 17:54:43,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-28 17:54:43,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851292303] [2023-08-28 17:54:43,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-28 17:54:43,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-28 17:54:43,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-28 17:54:43,573 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-28 17:54:43,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-28 17:54:43,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1851292303] [2023-08-28 17:54:43,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1851292303] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-28 17:54:43,574 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-28 17:54:43,574 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-28 17:54:43,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065930688] [2023-08-28 17:54:43,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-28 17:54:43,574 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-28 17:54:43,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-28 17:54:43,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-28 17:54:43,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-28 17:54:43,576 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 139 out of 296 [2023-08-28 17:54:43,576 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 66 transitions, 144 flow. Second operand has 2 states, 2 states have (on average 141.5) internal successors, (283), 2 states have internal predecessors, (283), 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) [2023-08-28 17:54:43,576 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-28 17:54:43,576 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 139 of 296 [2023-08-28 17:54:43,576 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-28 17:54:43,654 INFO L130 PetriNetUnfolder]: 218/611 cut-off events. [2023-08-28 17:54:43,654 INFO L131 PetriNetUnfolder]: For 26/26 co-relation queries the response was YES. [2023-08-28 17:54:43,656 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1000 conditions, 611 events. 218/611 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 3911 event pairs, 152 based on Foata normal form. 60/558 useless extension candidates. Maximal degree in co-relation 191. Up to 349 conditions per place. [2023-08-28 17:54:43,659 INFO L137 encePairwiseOnDemand]: 283/296 looper letters, 20 selfloop transitions, 0 changer transitions 0/53 dead transitions. [2023-08-28 17:54:43,659 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 53 transitions, 158 flow [2023-08-28 17:54:43,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-28 17:54:43,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-28 17:54:43,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 311 transitions. [2023-08-28 17:54:43,661 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5253378378378378 [2023-08-28 17:54:43,661 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 311 transitions. [2023-08-28 17:54:43,662 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 311 transitions. [2023-08-28 17:54:43,662 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-28 17:54:43,663 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 311 transitions. [2023-08-28 17:54:43,664 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 155.5) internal successors, (311), 2 states have internal predecessors, (311), 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) [2023-08-28 17:54:43,665 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 296.0) internal successors, (888), 3 states have internal predecessors, (888), 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) [2023-08-28 17:54:43,666 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 296.0) internal successors, (888), 3 states have internal predecessors, (888), 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) [2023-08-28 17:54:43,666 INFO L175 Difference]: Start difference. First operand has 63 places, 66 transitions, 144 flow. Second operand 2 states and 311 transitions. [2023-08-28 17:54:43,666 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 53 transitions, 158 flow [2023-08-28 17:54:43,667 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 53 transitions, 156 flow, removed 1 selfloop flow, removed 0 redundant places. [2023-08-28 17:54:43,668 INFO L231 Difference]: Finished difference. Result has 55 places, 53 transitions, 116 flow [2023-08-28 17:54:43,669 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=296, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=116, PETRI_PLACES=55, PETRI_TRANSITIONS=53} [2023-08-28 17:54:43,669 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, -8 predicate places. [2023-08-28 17:54:43,670 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 53 transitions, 116 flow [2023-08-28 17:54:43,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 141.5) internal successors, (283), 2 states have internal predecessors, (283), 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) [2023-08-28 17:54:43,670 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-28 17:54:43,670 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-28 17:54:43,671 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-28 17:54:43,671 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err3ASSERT_VIOLATIONDATA_RACE === [thr1Err5ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2023-08-28 17:54:43,671 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-28 17:54:43,671 INFO L85 PathProgramCache]: Analyzing trace with hash 1029281847, now seen corresponding path program 1 times [2023-08-28 17:54:43,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-28 17:54:43,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579158065] [2023-08-28 17:54:43,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-28 17:54:43,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-28 17:54:43,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-28 17:54:43,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-28 17:54:43,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-28 17:54:43,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [579158065] [2023-08-28 17:54:43,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [579158065] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-28 17:54:43,753 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-28 17:54:43,753 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-28 17:54:43,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728143239] [2023-08-28 17:54:43,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-28 17:54:43,754 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-28 17:54:43,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-28 17:54:43,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-28 17:54:43,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-28 17:54:43,775 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 296 [2023-08-28 17:54:43,776 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 53 transitions, 116 flow. Second operand has 3 states, 3 states have (on average 134.66666666666666) internal successors, (404), 3 states have internal predecessors, (404), 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) [2023-08-28 17:54:43,776 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-28 17:54:43,776 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 296 [2023-08-28 17:54:43,776 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-28 17:54:43,867 INFO L130 PetriNetUnfolder]: 267/789 cut-off events. [2023-08-28 17:54:43,868 INFO L131 PetriNetUnfolder]: For 25/25 co-relation queries the response was YES. [2023-08-28 17:54:43,869 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1256 conditions, 789 events. 267/789 cut-off events. For 25/25 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 5235 event pairs, 127 based on Foata normal form. 0/660 useless extension candidates. Maximal degree in co-relation 1251. Up to 342 conditions per place. [2023-08-28 17:54:43,872 INFO L137 encePairwiseOnDemand]: 293/296 looper letters, 30 selfloop transitions, 2 changer transitions 0/65 dead transitions. [2023-08-28 17:54:43,872 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 65 transitions, 209 flow [2023-08-28 17:54:43,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-28 17:54:43,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-28 17:54:43,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 432 transitions. [2023-08-28 17:54:43,874 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4864864864864865 [2023-08-28 17:54:43,874 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 432 transitions. [2023-08-28 17:54:43,875 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 432 transitions. [2023-08-28 17:54:43,875 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-28 17:54:43,875 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 432 transitions. [2023-08-28 17:54:43,876 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 144.0) internal successors, (432), 3 states have internal predecessors, (432), 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) [2023-08-28 17:54:43,878 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 296.0) internal successors, (1184), 4 states have internal predecessors, (1184), 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) [2023-08-28 17:54:43,879 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 296.0) internal successors, (1184), 4 states have internal predecessors, (1184), 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) [2023-08-28 17:54:43,879 INFO L175 Difference]: Start difference. First operand has 55 places, 53 transitions, 116 flow. Second operand 3 states and 432 transitions. [2023-08-28 17:54:43,879 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 65 transitions, 209 flow [2023-08-28 17:54:43,880 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 65 transitions, 209 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-28 17:54:43,881 INFO L231 Difference]: Finished difference. Result has 58 places, 54 transitions, 128 flow [2023-08-28 17:54:43,881 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=296, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=128, PETRI_PLACES=58, PETRI_TRANSITIONS=54} [2023-08-28 17:54:43,882 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, -5 predicate places. [2023-08-28 17:54:43,882 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 54 transitions, 128 flow [2023-08-28 17:54:43,883 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 134.66666666666666) internal successors, (404), 3 states have internal predecessors, (404), 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) [2023-08-28 17:54:43,883 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-28 17:54:43,883 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-28 17:54:43,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-28 17:54:43,883 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err5ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2023-08-28 17:54:43,884 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-28 17:54:43,884 INFO L85 PathProgramCache]: Analyzing trace with hash 475890431, now seen corresponding path program 1 times [2023-08-28 17:54:43,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-28 17:54:43,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525617590] [2023-08-28 17:54:43,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-28 17:54:43,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-28 17:54:43,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-28 17:54:44,148 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-28 17:54:44,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-28 17:54:44,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1525617590] [2023-08-28 17:54:44,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1525617590] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-28 17:54:44,149 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-28 17:54:44,150 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-28 17:54:44,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624062330] [2023-08-28 17:54:44,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-28 17:54:44,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-28 17:54:44,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-28 17:54:44,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-28 17:54:44,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-28 17:54:44,316 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 296 [2023-08-28 17:54:44,318 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 54 transitions, 128 flow. Second operand has 6 states, 6 states have (on average 129.66666666666666) internal successors, (778), 6 states have internal predecessors, (778), 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) [2023-08-28 17:54:44,318 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-28 17:54:44,318 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 296 [2023-08-28 17:54:44,318 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-28 17:54:44,522 INFO L130 PetriNetUnfolder]: 481/1108 cut-off events. [2023-08-28 17:54:44,522 INFO L131 PetriNetUnfolder]: For 109/109 co-relation queries the response was YES. [2023-08-28 17:54:44,524 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2040 conditions, 1108 events. 481/1108 cut-off events. For 109/109 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 7212 event pairs, 185 based on Foata normal form. 36/1011 useless extension candidates. Maximal degree in co-relation 2033. Up to 418 conditions per place. [2023-08-28 17:54:44,529 INFO L137 encePairwiseOnDemand]: 290/296 looper letters, 59 selfloop transitions, 6 changer transitions 0/93 dead transitions. [2023-08-28 17:54:44,529 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 93 transitions, 356 flow [2023-08-28 17:54:44,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-28 17:54:44,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-28 17:54:44,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 833 transitions. [2023-08-28 17:54:44,532 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46903153153153154 [2023-08-28 17:54:44,532 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 833 transitions. [2023-08-28 17:54:44,533 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 833 transitions. [2023-08-28 17:54:44,533 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-28 17:54:44,533 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 833 transitions. [2023-08-28 17:54:44,535 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 138.83333333333334) internal successors, (833), 6 states have internal predecessors, (833), 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) [2023-08-28 17:54:44,538 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 296.0) internal successors, (2072), 7 states have internal predecessors, (2072), 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) [2023-08-28 17:54:44,539 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 296.0) internal successors, (2072), 7 states have internal predecessors, (2072), 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) [2023-08-28 17:54:44,539 INFO L175 Difference]: Start difference. First operand has 58 places, 54 transitions, 128 flow. Second operand 6 states and 833 transitions. [2023-08-28 17:54:44,539 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 93 transitions, 356 flow [2023-08-28 17:54:44,541 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 93 transitions, 354 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-28 17:54:44,542 INFO L231 Difference]: Finished difference. Result has 61 places, 53 transitions, 136 flow [2023-08-28 17:54:44,542 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=296, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=136, PETRI_PLACES=61, PETRI_TRANSITIONS=53} [2023-08-28 17:54:44,543 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, -2 predicate places. [2023-08-28 17:54:44,543 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 53 transitions, 136 flow [2023-08-28 17:54:44,543 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 129.66666666666666) internal successors, (778), 6 states have internal predecessors, (778), 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) [2023-08-28 17:54:44,544 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-28 17:54:44,544 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-28 17:54:44,544 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-28 17:54:44,544 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err3ASSERT_VIOLATIONDATA_RACE === [thr1Err5ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2023-08-28 17:54:44,544 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-28 17:54:44,545 INFO L85 PathProgramCache]: Analyzing trace with hash -1756478359, now seen corresponding path program 1 times [2023-08-28 17:54:44,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-28 17:54:44,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342469083] [2023-08-28 17:54:44,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-28 17:54:44,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-28 17:54:44,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-28 17:54:44,590 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-28 17:54:44,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-28 17:54:44,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1342469083] [2023-08-28 17:54:44,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1342469083] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-28 17:54:44,591 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-28 17:54:44,591 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-28 17:54:44,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114065483] [2023-08-28 17:54:44,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-28 17:54:44,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-28 17:54:44,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-28 17:54:44,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-28 17:54:44,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-28 17:54:44,609 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 296 [2023-08-28 17:54:44,610 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 53 transitions, 136 flow. Second operand has 3 states, 3 states have (on average 127.66666666666667) internal successors, (383), 3 states have internal predecessors, (383), 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) [2023-08-28 17:54:44,610 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-28 17:54:44,611 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 296 [2023-08-28 17:54:44,612 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-28 17:54:44,777 INFO L130 PetriNetUnfolder]: 750/1493 cut-off events. [2023-08-28 17:54:44,778 INFO L131 PetriNetUnfolder]: For 236/236 co-relation queries the response was YES. [2023-08-28 17:54:44,780 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2980 conditions, 1493 events. 750/1493 cut-off events. For 236/236 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 9145 event pairs, 280 based on Foata normal form. 0/1375 useless extension candidates. Maximal degree in co-relation 2973. Up to 714 conditions per place. [2023-08-28 17:54:44,786 INFO L137 encePairwiseOnDemand]: 282/296 looper letters, 50 selfloop transitions, 10 changer transitions 0/80 dead transitions. [2023-08-28 17:54:44,787 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 80 transitions, 327 flow [2023-08-28 17:54:44,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-28 17:54:44,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-28 17:54:44,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 437 transitions. [2023-08-28 17:54:44,788 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49211711711711714 [2023-08-28 17:54:44,789 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 437 transitions. [2023-08-28 17:54:44,789 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 437 transitions. [2023-08-28 17:54:44,789 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-28 17:54:44,789 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 437 transitions. [2023-08-28 17:54:44,790 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 145.66666666666666) internal successors, (437), 3 states have internal predecessors, (437), 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) [2023-08-28 17:54:44,792 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 296.0) internal successors, (1184), 4 states have internal predecessors, (1184), 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) [2023-08-28 17:54:44,792 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 296.0) internal successors, (1184), 4 states have internal predecessors, (1184), 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) [2023-08-28 17:54:44,793 INFO L175 Difference]: Start difference. First operand has 61 places, 53 transitions, 136 flow. Second operand 3 states and 437 transitions. [2023-08-28 17:54:44,793 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 80 transitions, 327 flow [2023-08-28 17:54:44,794 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 80 transitions, 311 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-08-28 17:54:44,795 INFO L231 Difference]: Finished difference. Result has 60 places, 63 transitions, 212 flow [2023-08-28 17:54:44,795 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=296, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=212, PETRI_PLACES=60, PETRI_TRANSITIONS=63} [2023-08-28 17:54:44,796 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, -3 predicate places. [2023-08-28 17:54:44,796 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 63 transitions, 212 flow [2023-08-28 17:54:44,797 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 127.66666666666667) internal successors, (383), 3 states have internal predecessors, (383), 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) [2023-08-28 17:54:44,797 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-28 17:54:44,797 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-28 17:54:44,797 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-28 17:54:44,797 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err5ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2023-08-28 17:54:44,798 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-28 17:54:44,798 INFO L85 PathProgramCache]: Analyzing trace with hash 1346186484, now seen corresponding path program 1 times [2023-08-28 17:54:44,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-28 17:54:44,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77510733] [2023-08-28 17:54:44,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-28 17:54:44,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-28 17:54:44,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-28 17:54:44,995 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-28 17:54:44,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-28 17:54:44,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77510733] [2023-08-28 17:54:44,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [77510733] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-28 17:54:44,996 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-28 17:54:44,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-28 17:54:44,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158549255] [2023-08-28 17:54:44,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-28 17:54:44,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-28 17:54:44,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-28 17:54:44,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-28 17:54:44,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-28 17:54:45,129 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 296 [2023-08-28 17:54:45,130 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 63 transitions, 212 flow. Second operand has 6 states, 6 states have (on average 129.83333333333334) internal successors, (779), 6 states have internal predecessors, (779), 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) [2023-08-28 17:54:45,130 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-28 17:54:45,130 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 296 [2023-08-28 17:54:45,130 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-28 17:54:45,331 INFO L130 PetriNetUnfolder]: 630/1351 cut-off events. [2023-08-28 17:54:45,332 INFO L131 PetriNetUnfolder]: For 418/420 co-relation queries the response was YES. [2023-08-28 17:54:45,335 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2925 conditions, 1351 events. 630/1351 cut-off events. For 418/420 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 8752 event pairs, 336 based on Foata normal form. 0/1233 useless extension candidates. Maximal degree in co-relation 2917. Up to 695 conditions per place. [2023-08-28 17:54:45,340 INFO L137 encePairwiseOnDemand]: 290/296 looper letters, 62 selfloop transitions, 5 changer transitions 0/102 dead transitions. [2023-08-28 17:54:45,340 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 102 transitions, 472 flow [2023-08-28 17:54:45,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-28 17:54:45,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-28 17:54:45,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 829 transitions. [2023-08-28 17:54:45,343 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46677927927927926 [2023-08-28 17:54:45,343 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 829 transitions. [2023-08-28 17:54:45,343 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 829 transitions. [2023-08-28 17:54:45,344 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-28 17:54:45,344 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 829 transitions. [2023-08-28 17:54:45,346 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 138.16666666666666) internal successors, (829), 6 states have internal predecessors, (829), 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) [2023-08-28 17:54:45,348 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 296.0) internal successors, (2072), 7 states have internal predecessors, (2072), 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) [2023-08-28 17:54:45,349 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 296.0) internal successors, (2072), 7 states have internal predecessors, (2072), 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) [2023-08-28 17:54:45,349 INFO L175 Difference]: Start difference. First operand has 60 places, 63 transitions, 212 flow. Second operand 6 states and 829 transitions. [2023-08-28 17:54:45,349 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 102 transitions, 472 flow [2023-08-28 17:54:45,352 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 102 transitions, 444 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-28 17:54:45,353 INFO L231 Difference]: Finished difference. Result has 62 places, 62 transitions, 200 flow [2023-08-28 17:54:45,354 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=296, PETRI_DIFFERENCE_MINUEND_FLOW=190, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=200, PETRI_PLACES=62, PETRI_TRANSITIONS=62} [2023-08-28 17:54:45,354 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, -1 predicate places. [2023-08-28 17:54:45,354 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 62 transitions, 200 flow [2023-08-28 17:54:45,355 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 129.83333333333334) internal successors, (779), 6 states have internal predecessors, (779), 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) [2023-08-28 17:54:45,355 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-28 17:54:45,355 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-28 17:54:45,355 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-28 17:54:45,355 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thr1Err4ASSERT_VIOLATIONDATA_RACE === [thr1Err5ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2023-08-28 17:54:45,356 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-28 17:54:45,356 INFO L85 PathProgramCache]: Analyzing trace with hash 95579050, now seen corresponding path program 1 times [2023-08-28 17:54:45,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-28 17:54:45,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1892088359] [2023-08-28 17:54:45,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-28 17:54:45,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-28 17:54:45,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-28 17:54:45,393 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-28 17:54:45,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-28 17:54:45,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1892088359] [2023-08-28 17:54:45,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1892088359] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-28 17:54:45,394 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-28 17:54:45,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-28 17:54:45,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721483601] [2023-08-28 17:54:45,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-28 17:54:45,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-28 17:54:45,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-28 17:54:45,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-28 17:54:45,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-28 17:54:45,419 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 296 [2023-08-28 17:54:45,420 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 62 transitions, 200 flow. Second operand has 4 states, 4 states have (on average 131.25) internal successors, (525), 4 states have internal predecessors, (525), 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) [2023-08-28 17:54:45,420 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-28 17:54:45,420 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 296 [2023-08-28 17:54:45,420 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-28 17:54:45,659 INFO L130 PetriNetUnfolder]: 953/2140 cut-off events. [2023-08-28 17:54:45,659 INFO L131 PetriNetUnfolder]: For 212/214 co-relation queries the response was YES. [2023-08-28 17:54:45,664 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4471 conditions, 2140 events. 953/2140 cut-off events. For 212/214 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 15164 event pairs, 205 based on Foata normal form. 2/1929 useless extension candidates. Maximal degree in co-relation 4463. Up to 481 conditions per place. [2023-08-28 17:54:45,673 INFO L137 encePairwiseOnDemand]: 288/296 looper letters, 59 selfloop transitions, 11 changer transitions 0/105 dead transitions. [2023-08-28 17:54:45,673 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 105 transitions, 459 flow [2023-08-28 17:54:45,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-28 17:54:45,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-28 17:54:45,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 709 transitions. [2023-08-28 17:54:45,675 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47905405405405405 [2023-08-28 17:54:45,676 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 709 transitions. [2023-08-28 17:54:45,676 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 709 transitions. [2023-08-28 17:54:45,676 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-28 17:54:45,676 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 709 transitions. [2023-08-28 17:54:45,678 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 141.8) internal successors, (709), 5 states have internal predecessors, (709), 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) [2023-08-28 17:54:45,680 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 296.0) internal successors, (1776), 6 states have internal predecessors, (1776), 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) [2023-08-28 17:54:45,680 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 296.0) internal successors, (1776), 6 states have internal predecessors, (1776), 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) [2023-08-28 17:54:45,680 INFO L175 Difference]: Start difference. First operand has 62 places, 62 transitions, 200 flow. Second operand 5 states and 709 transitions. [2023-08-28 17:54:45,681 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 105 transitions, 459 flow [2023-08-28 17:54:45,682 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 105 transitions, 445 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-08-28 17:54:45,684 INFO L231 Difference]: Finished difference. Result has 64 places, 70 transitions, 255 flow [2023-08-28 17:54:45,684 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=296, PETRI_DIFFERENCE_MINUEND_FLOW=190, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=255, PETRI_PLACES=64, PETRI_TRANSITIONS=70} [2023-08-28 17:54:45,685 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 1 predicate places. [2023-08-28 17:54:45,685 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 70 transitions, 255 flow [2023-08-28 17:54:45,685 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 131.25) internal successors, (525), 4 states have internal predecessors, (525), 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) [2023-08-28 17:54:45,685 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-28 17:54:45,686 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-28 17:54:45,697 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-28 17:54:45,698 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thr1Err4ASSERT_VIOLATIONDATA_RACE === [thr1Err5ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2023-08-28 17:54:45,698 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-28 17:54:45,698 INFO L85 PathProgramCache]: Analyzing trace with hash 374479618, now seen corresponding path program 1 times [2023-08-28 17:54:45,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-28 17:54:45,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [218101302] [2023-08-28 17:54:45,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-28 17:54:45,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-28 17:54:45,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-28 17:54:45,741 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-28 17:54:45,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-28 17:54:45,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [218101302] [2023-08-28 17:54:45,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [218101302] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-28 17:54:45,742 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-28 17:54:45,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-28 17:54:45,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282496013] [2023-08-28 17:54:45,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-28 17:54:45,743 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-28 17:54:45,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-28 17:54:45,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-28 17:54:45,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-28 17:54:45,767 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 296 [2023-08-28 17:54:45,768 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 70 transitions, 255 flow. Second operand has 3 states, 3 states have (on average 131.33333333333334) internal successors, (394), 3 states have internal predecessors, (394), 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) [2023-08-28 17:54:45,768 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-28 17:54:45,768 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 296 [2023-08-28 17:54:45,768 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-28 17:54:46,039 INFO L130 PetriNetUnfolder]: 1100/2317 cut-off events. [2023-08-28 17:54:46,039 INFO L131 PetriNetUnfolder]: For 676/688 co-relation queries the response was YES. [2023-08-28 17:54:46,043 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5383 conditions, 2317 events. 1100/2317 cut-off events. For 676/688 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 15894 event pairs, 713 based on Foata normal form. 2/2117 useless extension candidates. Maximal degree in co-relation 5373. Up to 1636 conditions per place. [2023-08-28 17:54:46,051 INFO L137 encePairwiseOnDemand]: 290/296 looper letters, 41 selfloop transitions, 8 changer transitions 2/86 dead transitions. [2023-08-28 17:54:46,051 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 86 transitions, 413 flow [2023-08-28 17:54:46,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-28 17:54:46,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-28 17:54:46,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 423 transitions. [2023-08-28 17:54:46,053 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47635135135135137 [2023-08-28 17:54:46,053 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 423 transitions. [2023-08-28 17:54:46,053 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 423 transitions. [2023-08-28 17:54:46,054 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-28 17:54:46,054 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 423 transitions. [2023-08-28 17:54:46,055 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 141.0) internal successors, (423), 3 states have internal predecessors, (423), 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) [2023-08-28 17:54:46,056 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 296.0) internal successors, (1184), 4 states have internal predecessors, (1184), 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) [2023-08-28 17:54:46,058 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 296.0) internal successors, (1184), 4 states have internal predecessors, (1184), 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) [2023-08-28 17:54:46,058 INFO L175 Difference]: Start difference. First operand has 64 places, 70 transitions, 255 flow. Second operand 3 states and 423 transitions. [2023-08-28 17:54:46,058 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 86 transitions, 413 flow [2023-08-28 17:54:46,061 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 86 transitions, 413 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-28 17:54:46,062 INFO L231 Difference]: Finished difference. Result has 67 places, 76 transitions, 315 flow [2023-08-28 17:54:46,062 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=296, PETRI_DIFFERENCE_MINUEND_FLOW=255, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=315, PETRI_PLACES=67, PETRI_TRANSITIONS=76} [2023-08-28 17:54:46,064 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 4 predicate places. [2023-08-28 17:54:46,064 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 76 transitions, 315 flow [2023-08-28 17:54:46,065 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 131.33333333333334) internal successors, (394), 3 states have internal predecessors, (394), 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) [2023-08-28 17:54:46,065 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-28 17:54:46,065 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-28 17:54:46,065 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-28 17:54:46,065 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thr1Err4ASSERT_VIOLATIONDATA_RACE === [thr1Err5ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2023-08-28 17:54:46,065 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-28 17:54:46,066 INFO L85 PathProgramCache]: Analyzing trace with hash -1398347397, now seen corresponding path program 1 times [2023-08-28 17:54:46,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-28 17:54:46,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525611250] [2023-08-28 17:54:46,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-28 17:54:46,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-28 17:54:46,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-28 17:54:46,102 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-28 17:54:46,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-28 17:54:46,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1525611250] [2023-08-28 17:54:46,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1525611250] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-28 17:54:46,103 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-28 17:54:46,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-28 17:54:46,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267158135] [2023-08-28 17:54:46,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-28 17:54:46,105 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-28 17:54:46,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-28 17:54:46,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-28 17:54:46,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-28 17:54:46,124 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 296 [2023-08-28 17:54:46,125 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 76 transitions, 315 flow. Second operand has 3 states, 3 states have (on average 131.66666666666666) internal successors, (395), 3 states have internal predecessors, (395), 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) [2023-08-28 17:54:46,125 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-28 17:54:46,126 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 296 [2023-08-28 17:54:46,126 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-28 17:54:46,358 INFO L130 PetriNetUnfolder]: 1140/2367 cut-off events. [2023-08-28 17:54:46,358 INFO L131 PetriNetUnfolder]: For 1260/1314 co-relation queries the response was YES. [2023-08-28 17:54:46,363 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5919 conditions, 2367 events. 1140/2367 cut-off events. For 1260/1314 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 16140 event pairs, 714 based on Foata normal form. 6/2157 useless extension candidates. Maximal degree in co-relation 5907. Up to 1677 conditions per place. [2023-08-28 17:54:46,371 INFO L137 encePairwiseOnDemand]: 290/296 looper letters, 45 selfloop transitions, 10 changer transitions 1/91 dead transitions. [2023-08-28 17:54:46,372 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 91 transitions, 483 flow [2023-08-28 17:54:46,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-28 17:54:46,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-28 17:54:46,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 422 transitions. [2023-08-28 17:54:46,374 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4752252252252252 [2023-08-28 17:54:46,374 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 422 transitions. [2023-08-28 17:54:46,374 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 422 transitions. [2023-08-28 17:54:46,374 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-28 17:54:46,374 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 422 transitions. [2023-08-28 17:54:46,375 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 140.66666666666666) internal successors, (422), 3 states have internal predecessors, (422), 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) [2023-08-28 17:54:46,377 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 296.0) internal successors, (1184), 4 states have internal predecessors, (1184), 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) [2023-08-28 17:54:46,377 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 296.0) internal successors, (1184), 4 states have internal predecessors, (1184), 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) [2023-08-28 17:54:46,377 INFO L175 Difference]: Start difference. First operand has 67 places, 76 transitions, 315 flow. Second operand 3 states and 422 transitions. [2023-08-28 17:54:46,378 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 91 transitions, 483 flow [2023-08-28 17:54:46,383 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 91 transitions, 473 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-28 17:54:46,384 INFO L231 Difference]: Finished difference. Result has 69 places, 82 transitions, 377 flow [2023-08-28 17:54:46,385 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=296, PETRI_DIFFERENCE_MINUEND_FLOW=307, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=377, PETRI_PLACES=69, PETRI_TRANSITIONS=82} [2023-08-28 17:54:46,385 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 6 predicate places. [2023-08-28 17:54:46,386 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 82 transitions, 377 flow [2023-08-28 17:54:46,386 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 131.66666666666666) internal successors, (395), 3 states have internal predecessors, (395), 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) [2023-08-28 17:54:46,386 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-28 17:54:46,386 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-28 17:54:46,386 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-28 17:54:46,387 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thr1Err3ASSERT_VIOLATIONDATA_RACE === [thr1Err5ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2023-08-28 17:54:46,387 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-28 17:54:46,387 INFO L85 PathProgramCache]: Analyzing trace with hash -329346360, now seen corresponding path program 1 times [2023-08-28 17:54:46,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-28 17:54:46,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2046251700] [2023-08-28 17:54:46,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-28 17:54:46,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-28 17:54:46,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-28 17:54:46,472 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-28 17:54:46,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-28 17:54:46,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2046251700] [2023-08-28 17:54:46,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2046251700] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-28 17:54:46,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1525885373] [2023-08-28 17:54:46,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-28 17:54:46,475 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-28 17:54:46,475 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-28 17:54:46,481 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-28 17:54:46,492 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-28 17:54:46,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-28 17:54:46,574 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-28 17:54:46,575 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-28 17:54:46,606 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-28 17:54:46,607 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-28 17:54:46,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1525885373] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-28 17:54:46,607 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-28 17:54:46,607 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2023-08-28 17:54:46,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388819702] [2023-08-28 17:54:46,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-28 17:54:46,608 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-28 17:54:46,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-28 17:54:46,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-28 17:54:46,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-28 17:54:46,637 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 296 [2023-08-28 17:54:46,638 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 82 transitions, 377 flow. Second operand has 3 states, 3 states have (on average 136.66666666666666) internal successors, (410), 3 states have internal predecessors, (410), 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) [2023-08-28 17:54:46,638 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-28 17:54:46,639 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 296 [2023-08-28 17:54:46,639 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-28 17:54:46,906 INFO L130 PetriNetUnfolder]: 850/1993 cut-off events. [2023-08-28 17:54:46,906 INFO L131 PetriNetUnfolder]: For 1607/1697 co-relation queries the response was YES. [2023-08-28 17:54:46,911 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5037 conditions, 1993 events. 850/1993 cut-off events. For 1607/1697 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 14154 event pairs, 476 based on Foata normal form. 6/1848 useless extension candidates. Maximal degree in co-relation 5024. Up to 1081 conditions per place. [2023-08-28 17:54:46,918 INFO L137 encePairwiseOnDemand]: 293/296 looper letters, 40 selfloop transitions, 4 changer transitions 0/93 dead transitions. [2023-08-28 17:54:46,918 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 93 transitions, 503 flow [2023-08-28 17:54:46,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-28 17:54:46,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-28 17:54:46,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 431 transitions. [2023-08-28 17:54:46,920 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48536036036036034 [2023-08-28 17:54:46,921 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 431 transitions. [2023-08-28 17:54:46,921 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 431 transitions. [2023-08-28 17:54:46,921 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-28 17:54:46,921 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 431 transitions. [2023-08-28 17:54:46,922 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 143.66666666666666) internal successors, (431), 3 states have internal predecessors, (431), 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) [2023-08-28 17:54:46,923 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 296.0) internal successors, (1184), 4 states have internal predecessors, (1184), 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) [2023-08-28 17:54:46,924 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 296.0) internal successors, (1184), 4 states have internal predecessors, (1184), 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) [2023-08-28 17:54:46,924 INFO L175 Difference]: Start difference. First operand has 69 places, 82 transitions, 377 flow. Second operand 3 states and 431 transitions. [2023-08-28 17:54:46,924 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 93 transitions, 503 flow [2023-08-28 17:54:46,929 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 93 transitions, 491 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-28 17:54:46,930 INFO L231 Difference]: Finished difference. Result has 71 places, 82 transitions, 381 flow [2023-08-28 17:54:46,931 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=296, PETRI_DIFFERENCE_MINUEND_FLOW=361, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=381, PETRI_PLACES=71, PETRI_TRANSITIONS=82} [2023-08-28 17:54:46,931 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 8 predicate places. [2023-08-28 17:54:46,931 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 82 transitions, 381 flow [2023-08-28 17:54:46,932 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 136.66666666666666) internal successors, (410), 3 states have internal predecessors, (410), 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) [2023-08-28 17:54:46,932 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-28 17:54:46,932 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-28 17:54:46,941 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-28 17:54:47,137 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-08-28 17:54:47,137 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thr1Err3ASSERT_VIOLATIONDATA_RACE === [thr1Err5ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2023-08-28 17:54:47,138 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-28 17:54:47,138 INFO L85 PathProgramCache]: Analyzing trace with hash 234363925, now seen corresponding path program 1 times [2023-08-28 17:54:47,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-28 17:54:47,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1681082338] [2023-08-28 17:54:47,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-28 17:54:47,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-28 17:54:47,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-28 17:54:47,206 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-28 17:54:47,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-28 17:54:47,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1681082338] [2023-08-28 17:54:47,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1681082338] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-28 17:54:47,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [22678775] [2023-08-28 17:54:47,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-28 17:54:47,208 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-28 17:54:47,208 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-28 17:54:47,209 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-28 17:54:47,211 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-28 17:54:47,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-28 17:54:47,297 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-28 17:54:47,298 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-28 17:54:47,352 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-28 17:54:47,352 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-28 17:54:47,391 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-28 17:54:47,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [22678775] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-28 17:54:47,391 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-28 17:54:47,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2023-08-28 17:54:47,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289466229] [2023-08-28 17:54:47,392 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-28 17:54:47,392 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-28 17:54:47,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-28 17:54:47,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-28 17:54:47,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-28 17:54:47,425 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 296 [2023-08-28 17:54:47,426 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 82 transitions, 381 flow. Second operand has 5 states, 5 states have (on average 135.2) internal successors, (676), 5 states have internal predecessors, (676), 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) [2023-08-28 17:54:47,426 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-28 17:54:47,426 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 296 [2023-08-28 17:54:47,426 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-28 17:54:47,690 INFO L130 PetriNetUnfolder]: 886/2082 cut-off events. [2023-08-28 17:54:47,691 INFO L131 PetriNetUnfolder]: For 1776/1890 co-relation queries the response was YES. [2023-08-28 17:54:47,697 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5255 conditions, 2082 events. 886/2082 cut-off events. For 1776/1890 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 14338 event pairs, 418 based on Foata normal form. 36/1988 useless extension candidates. Maximal degree in co-relation 5241. Up to 989 conditions per place. [2023-08-28 17:54:47,704 INFO L137 encePairwiseOnDemand]: 292/296 looper letters, 53 selfloop transitions, 4 changer transitions 0/106 dead transitions. [2023-08-28 17:54:47,704 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 106 transitions, 613 flow [2023-08-28 17:54:47,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-28 17:54:47,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-28 17:54:47,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 572 transitions. [2023-08-28 17:54:47,707 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4831081081081081 [2023-08-28 17:54:47,707 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 572 transitions. [2023-08-28 17:54:47,707 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 572 transitions. [2023-08-28 17:54:47,707 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-28 17:54:47,707 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 572 transitions. [2023-08-28 17:54:47,709 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 143.0) internal successors, (572), 4 states have internal predecessors, (572), 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) [2023-08-28 17:54:47,710 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 296.0) internal successors, (1480), 5 states have internal predecessors, (1480), 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) [2023-08-28 17:54:47,711 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 296.0) internal successors, (1480), 5 states have internal predecessors, (1480), 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) [2023-08-28 17:54:47,711 INFO L175 Difference]: Start difference. First operand has 71 places, 82 transitions, 381 flow. Second operand 4 states and 572 transitions. [2023-08-28 17:54:47,711 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 106 transitions, 613 flow [2023-08-28 17:54:47,715 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 106 transitions, 605 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-28 17:54:47,717 INFO L231 Difference]: Finished difference. Result has 75 places, 83 transitions, 397 flow [2023-08-28 17:54:47,717 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=296, PETRI_DIFFERENCE_MINUEND_FLOW=377, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=397, PETRI_PLACES=75, PETRI_TRANSITIONS=83} [2023-08-28 17:54:47,718 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 12 predicate places. [2023-08-28 17:54:47,718 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 83 transitions, 397 flow [2023-08-28 17:54:47,718 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 135.2) internal successors, (676), 5 states have internal predecessors, (676), 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) [2023-08-28 17:54:47,718 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-28 17:54:47,719 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-28 17:54:47,726 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-28 17:54:47,924 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-08-28 17:54:47,924 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thr1Err3ASSERT_VIOLATIONDATA_RACE === [thr1Err5ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2023-08-28 17:54:47,925 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-28 17:54:47,925 INFO L85 PathProgramCache]: Analyzing trace with hash 2055168727, now seen corresponding path program 1 times [2023-08-28 17:54:47,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-28 17:54:47,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690908509] [2023-08-28 17:54:47,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-28 17:54:47,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-28 17:54:47,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-28 17:54:48,037 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-28 17:54:48,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-28 17:54:48,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1690908509] [2023-08-28 17:54:48,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1690908509] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-28 17:54:48,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [403172558] [2023-08-28 17:54:48,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-28 17:54:48,038 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-28 17:54:48,038 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-28 17:54:48,039 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-28 17:54:48,066 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-28 17:54:48,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-28 17:54:48,144 INFO L263 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-28 17:54:48,145 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-28 17:54:48,174 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-28 17:54:48,174 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-28 17:54:48,204 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-28 17:54:48,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [403172558] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-28 17:54:48,205 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-28 17:54:48,205 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 4 [2023-08-28 17:54:48,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677691232] [2023-08-28 17:54:48,205 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-28 17:54:48,206 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-28 17:54:48,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-28 17:54:48,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-28 17:54:48,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-28 17:54:48,235 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 296 [2023-08-28 17:54:48,236 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 83 transitions, 397 flow. Second operand has 4 states, 4 states have (on average 135.25) internal successors, (541), 4 states have internal predecessors, (541), 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) [2023-08-28 17:54:48,236 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-28 17:54:48,236 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 296 [2023-08-28 17:54:48,236 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-28 17:54:48,468 INFO L130 PetriNetUnfolder]: 927/2165 cut-off events. [2023-08-28 17:54:48,468 INFO L131 PetriNetUnfolder]: For 2171/2261 co-relation queries the response was YES. [2023-08-28 17:54:48,474 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5716 conditions, 2165 events. 927/2165 cut-off events. For 2171/2261 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 14827 event pairs, 477 based on Foata normal form. 32/2075 useless extension candidates. Maximal degree in co-relation 5701. Up to 1042 conditions per place. [2023-08-28 17:54:48,480 INFO L137 encePairwiseOnDemand]: 292/296 looper letters, 52 selfloop transitions, 6 changer transitions 0/107 dead transitions. [2023-08-28 17:54:48,481 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 107 transitions, 629 flow [2023-08-28 17:54:48,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-28 17:54:48,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-28 17:54:48,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 570 transitions. [2023-08-28 17:54:48,483 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4814189189189189 [2023-08-28 17:54:48,483 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 570 transitions. [2023-08-28 17:54:48,483 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 570 transitions. [2023-08-28 17:54:48,483 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-28 17:54:48,483 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 570 transitions. [2023-08-28 17:54:48,485 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 142.5) internal successors, (570), 4 states have internal predecessors, (570), 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) [2023-08-28 17:54:48,486 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 296.0) internal successors, (1480), 5 states have internal predecessors, (1480), 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) [2023-08-28 17:54:48,487 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 296.0) internal successors, (1480), 5 states have internal predecessors, (1480), 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) [2023-08-28 17:54:48,487 INFO L175 Difference]: Start difference. First operand has 75 places, 83 transitions, 397 flow. Second operand 4 states and 570 transitions. [2023-08-28 17:54:48,487 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 107 transitions, 629 flow [2023-08-28 17:54:48,490 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 107 transitions, 617 flow, removed 3 selfloop flow, removed 1 redundant places. [2023-08-28 17:54:48,492 INFO L231 Difference]: Finished difference. Result has 79 places, 84 transitions, 419 flow [2023-08-28 17:54:48,492 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=296, PETRI_DIFFERENCE_MINUEND_FLOW=393, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=419, PETRI_PLACES=79, PETRI_TRANSITIONS=84} [2023-08-28 17:54:48,493 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 16 predicate places. [2023-08-28 17:54:48,493 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 84 transitions, 419 flow [2023-08-28 17:54:48,493 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 135.25) internal successors, (541), 4 states have internal predecessors, (541), 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) [2023-08-28 17:54:48,493 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-28 17:54:48,493 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-28 17:54:48,501 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-28 17:54:48,698 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-28 17:54:48,699 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thr1Err3ASSERT_VIOLATIONDATA_RACE === [thr1Err5ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2023-08-28 17:54:48,699 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-28 17:54:48,699 INFO L85 PathProgramCache]: Analyzing trace with hash -1097667677, now seen corresponding path program 2 times [2023-08-28 17:54:48,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-28 17:54:48,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [813466877] [2023-08-28 17:54:48,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-28 17:54:48,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-28 17:54:48,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-28 17:54:48,852 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-08-28 17:54:48,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-28 17:54:48,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [813466877] [2023-08-28 17:54:48,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [813466877] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-28 17:54:48,853 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-28 17:54:48,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-28 17:54:48,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069388720] [2023-08-28 17:54:48,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-28 17:54:48,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-28 17:54:48,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-28 17:54:48,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-28 17:54:48,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-28 17:54:48,856 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 296 [2023-08-28 17:54:48,857 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 84 transitions, 419 flow. Second operand has 3 states, 3 states have (on average 142.33333333333334) internal successors, (427), 3 states have internal predecessors, (427), 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) [2023-08-28 17:54:48,857 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-28 17:54:48,857 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 296 [2023-08-28 17:54:48,857 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-28 17:54:49,020 INFO L130 PetriNetUnfolder]: 615/1555 cut-off events. [2023-08-28 17:54:49,020 INFO L131 PetriNetUnfolder]: For 2005/2013 co-relation queries the response was YES. [2023-08-28 17:54:49,024 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4292 conditions, 1555 events. 615/1555 cut-off events. For 2005/2013 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 10205 event pairs, 310 based on Foata normal form. 12/1508 useless extension candidates. Maximal degree in co-relation 4275. Up to 589 conditions per place. [2023-08-28 17:54:49,030 INFO L137 encePairwiseOnDemand]: 292/296 looper letters, 42 selfloop transitions, 4 changer transitions 0/87 dead transitions. [2023-08-28 17:54:49,031 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 87 transitions, 531 flow [2023-08-28 17:54:49,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-28 17:54:49,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-28 17:54:49,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 446 transitions. [2023-08-28 17:54:49,032 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5022522522522522 [2023-08-28 17:54:49,033 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 446 transitions. [2023-08-28 17:54:49,033 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 446 transitions. [2023-08-28 17:54:49,033 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-28 17:54:49,033 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 446 transitions. [2023-08-28 17:54:49,034 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 148.66666666666666) internal successors, (446), 3 states have internal predecessors, (446), 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) [2023-08-28 17:54:49,035 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 296.0) internal successors, (1184), 4 states have internal predecessors, (1184), 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) [2023-08-28 17:54:49,036 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 296.0) internal successors, (1184), 4 states have internal predecessors, (1184), 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) [2023-08-28 17:54:49,036 INFO L175 Difference]: Start difference. First operand has 79 places, 84 transitions, 419 flow. Second operand 3 states and 446 transitions. [2023-08-28 17:54:49,036 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 87 transitions, 531 flow [2023-08-28 17:54:49,040 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 87 transitions, 507 flow, removed 8 selfloop flow, removed 1 redundant places. [2023-08-28 17:54:49,042 INFO L231 Difference]: Finished difference. Result has 78 places, 70 transitions, 323 flow [2023-08-28 17:54:49,042 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=296, PETRI_DIFFERENCE_MINUEND_FLOW=315, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=323, PETRI_PLACES=78, PETRI_TRANSITIONS=70} [2023-08-28 17:54:49,043 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 15 predicate places. [2023-08-28 17:54:49,043 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 70 transitions, 323 flow [2023-08-28 17:54:49,044 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 142.33333333333334) internal successors, (427), 3 states have internal predecessors, (427), 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) [2023-08-28 17:54:49,044 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-28 17:54:49,044 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-28 17:54:49,044 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-28 17:54:49,044 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thr1Err7ASSERT_VIOLATIONDATA_RACE === [thr1Err5ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2023-08-28 17:54:49,045 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-28 17:54:49,045 INFO L85 PathProgramCache]: Analyzing trace with hash 1781587711, now seen corresponding path program 1 times [2023-08-28 17:54:49,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-28 17:54:49,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321087497] [2023-08-28 17:54:49,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-28 17:54:49,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-28 17:54:49,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-28 17:54:50,013 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-08-28 17:54:50,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-28 17:54:50,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [321087497] [2023-08-28 17:54:50,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [321087497] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-28 17:54:50,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1230108523] [2023-08-28 17:54:50,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-28 17:54:50,014 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-28 17:54:50,015 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-28 17:54:50,017 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-28 17:54:50,044 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-28 17:54:50,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-28 17:54:50,483 INFO L263 TraceCheckSpWp]: Trace formula consists of 276 conjuncts, 38 conjunts are in the unsatisfiable core [2023-08-28 17:54:50,487 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-28 17:54:50,533 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-28 17:54:50,534 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-08-28 17:54:50,585 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 31 [2023-08-28 17:54:50,665 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 31 [2023-08-28 17:54:50,967 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-28 17:54:50,975 INFO L321 Elim1Store]: treesize reduction 22, result has 12.0 percent of original size [2023-08-28 17:54:50,975 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 38 treesize of output 19 [2023-08-28 17:54:51,150 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 106 treesize of output 42 [2023-08-28 17:54:51,238 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-08-28 17:54:51,238 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-28 17:54:51,324 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-28 17:54:51,324 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 124 treesize of output 54 [2023-08-28 17:54:51,472 WARN L839 $PredicateComparison]: unable to prove that (forall ((|aux_div_v_thr1Thread1of2ForFork0_~offset~0#1_35_49| Int) (v_ArrVal_330 (Array Int Int))) (or (< c_~max~0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t~0#1.base| v_ArrVal_330) |c_~#storage~0.base|) (+ (* |aux_div_v_thr1Thread1of2ForFork0_~offset~0#1_35_49| 8) 4 |c_~#storage~0.offset|))) (< |aux_div_v_thr1Thread1of2ForFork0_~offset~0#1_35_49| 0) (<= 3 |aux_div_v_thr1Thread1of2ForFork0_~offset~0#1_35_49|))) is different from false [2023-08-28 17:54:51,523 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 7 trivial. 1 not checked. [2023-08-28 17:54:51,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1230108523] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-28 17:54:51,524 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-28 17:54:51,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 18 [2023-08-28 17:54:51,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999041189] [2023-08-28 17:54:51,524 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-28 17:54:51,525 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-08-28 17:54:51,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-28 17:54:51,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-08-28 17:54:51,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=252, Unknown=1, NotChecked=32, Total=342 [2023-08-28 17:54:51,686 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 296 [2023-08-28 17:54:51,688 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 70 transitions, 323 flow. Second operand has 19 states, 19 states have (on average 88.0) internal successors, (1672), 19 states have internal predecessors, (1672), 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) [2023-08-28 17:54:51,688 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-28 17:54:51,688 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 296 [2023-08-28 17:54:51,688 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-28 17:54:52,659 INFO L130 PetriNetUnfolder]: 1863/3430 cut-off events. [2023-08-28 17:54:52,659 INFO L131 PetriNetUnfolder]: For 2672/2696 co-relation queries the response was YES. [2023-08-28 17:54:52,669 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9368 conditions, 3430 events. 1863/3430 cut-off events. For 2672/2696 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 21938 event pairs, 122 based on Foata normal form. 6/3383 useless extension candidates. Maximal degree in co-relation 9350. Up to 986 conditions per place. [2023-08-28 17:54:52,682 INFO L137 encePairwiseOnDemand]: 288/296 looper letters, 129 selfloop transitions, 14 changer transitions 8/174 dead transitions. [2023-08-28 17:54:52,682 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 174 transitions, 1082 flow [2023-08-28 17:54:52,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-28 17:54:52,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-28 17:54:52,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 806 transitions. [2023-08-28 17:54:52,685 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3403716216216216 [2023-08-28 17:54:52,685 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 806 transitions. [2023-08-28 17:54:52,685 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 806 transitions. [2023-08-28 17:54:52,686 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-28 17:54:52,686 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 806 transitions. [2023-08-28 17:54:52,688 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 100.75) internal successors, (806), 8 states have internal predecessors, (806), 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) [2023-08-28 17:54:52,690 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 296.0) internal successors, (2664), 9 states have internal predecessors, (2664), 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) [2023-08-28 17:54:52,691 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 296.0) internal successors, (2664), 9 states have internal predecessors, (2664), 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) [2023-08-28 17:54:52,691 INFO L175 Difference]: Start difference. First operand has 78 places, 70 transitions, 323 flow. Second operand 8 states and 806 transitions. [2023-08-28 17:54:52,691 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 174 transitions, 1082 flow [2023-08-28 17:54:52,699 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 174 transitions, 1067 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-28 17:54:52,701 INFO L231 Difference]: Finished difference. Result has 89 places, 76 transitions, 412 flow [2023-08-28 17:54:52,702 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=296, PETRI_DIFFERENCE_MINUEND_FLOW=319, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=412, PETRI_PLACES=89, PETRI_TRANSITIONS=76} [2023-08-28 17:54:52,702 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 26 predicate places. [2023-08-28 17:54:52,702 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 76 transitions, 412 flow [2023-08-28 17:54:52,703 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 88.0) internal successors, (1672), 19 states have internal predecessors, (1672), 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) [2023-08-28 17:54:52,703 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-28 17:54:52,703 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-28 17:54:52,714 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-28 17:54:52,909 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-08-28 17:54:52,910 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thr1Err7ASSERT_VIOLATIONDATA_RACE === [thr1Err5ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2023-08-28 17:54:52,910 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-28 17:54:52,913 INFO L85 PathProgramCache]: Analyzing trace with hash 1729404460, now seen corresponding path program 1 times [2023-08-28 17:54:52,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-28 17:54:52,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485409154] [2023-08-28 17:54:52,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-28 17:54:52,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-28 17:54:52,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-28 17:54:53,991 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-08-28 17:54:53,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-28 17:54:53,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1485409154] [2023-08-28 17:54:53,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1485409154] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-28 17:54:53,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [56892073] [2023-08-28 17:54:53,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-28 17:54:53,992 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-28 17:54:53,993 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-28 17:54:53,997 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-28 17:54:54,024 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-28 17:54:54,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-28 17:54:54,376 INFO L263 TraceCheckSpWp]: Trace formula consists of 276 conjuncts, 58 conjunts are in the unsatisfiable core [2023-08-28 17:54:54,379 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-28 17:54:54,400 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-28 17:54:54,401 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-08-28 17:54:54,454 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 36 [2023-08-28 17:54:54,536 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 36 [2023-08-28 17:54:55,061 INFO L321 Elim1Store]: treesize reduction 21, result has 48.8 percent of original size [2023-08-28 17:54:55,061 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 16 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 5 case distinctions, treesize of input 58 treesize of output 41 [2023-08-28 17:54:55,169 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-08-28 17:54:55,170 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-28 17:54:55,924 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-08-28 17:54:55,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [56892073] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-28 17:54:55,925 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-28 17:54:55,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 8] total 20 [2023-08-28 17:54:55,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522023526] [2023-08-28 17:54:55,925 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-28 17:54:55,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-08-28 17:54:55,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-28 17:54:55,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-08-28 17:54:55,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=328, Unknown=1, NotChecked=0, Total=420 [2023-08-28 17:54:57,869 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 296 [2023-08-28 17:54:57,870 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 76 transitions, 412 flow. Second operand has 21 states, 21 states have (on average 87.38095238095238) internal successors, (1835), 21 states have internal predecessors, (1835), 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) [2023-08-28 17:54:57,870 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-28 17:54:57,870 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 296 [2023-08-28 17:54:57,870 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-28 17:54:58,767 INFO L130 PetriNetUnfolder]: 1966/3604 cut-off events. [2023-08-28 17:54:58,767 INFO L131 PetriNetUnfolder]: For 4310/4324 co-relation queries the response was YES. [2023-08-28 17:54:58,775 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10241 conditions, 3604 events. 1966/3604 cut-off events. For 4310/4324 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 22334 event pairs, 101 based on Foata normal form. 38/3610 useless extension candidates. Maximal degree in co-relation 10218. Up to 955 conditions per place. [2023-08-28 17:54:58,785 INFO L137 encePairwiseOnDemand]: 286/296 looper letters, 123 selfloop transitions, 20 changer transitions 2/168 dead transitions. [2023-08-28 17:54:58,785 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 168 transitions, 1148 flow [2023-08-28 17:54:58,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-28 17:54:58,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-28 17:54:58,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 872 transitions. [2023-08-28 17:54:58,789 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32732732732732733 [2023-08-28 17:54:58,789 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 872 transitions. [2023-08-28 17:54:58,789 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 872 transitions. [2023-08-28 17:54:58,789 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-28 17:54:58,789 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 872 transitions. [2023-08-28 17:54:58,791 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 96.88888888888889) internal successors, (872), 9 states have internal predecessors, (872), 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) [2023-08-28 17:54:58,794 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 296.0) internal successors, (2960), 10 states have internal predecessors, (2960), 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) [2023-08-28 17:54:58,795 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 296.0) internal successors, (2960), 10 states have internal predecessors, (2960), 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) [2023-08-28 17:54:58,795 INFO L175 Difference]: Start difference. First operand has 89 places, 76 transitions, 412 flow. Second operand 9 states and 872 transitions. [2023-08-28 17:54:58,795 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 168 transitions, 1148 flow [2023-08-28 17:54:58,804 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 168 transitions, 1130 flow, removed 5 selfloop flow, removed 1 redundant places. [2023-08-28 17:54:58,806 INFO L231 Difference]: Finished difference. Result has 100 places, 83 transitions, 516 flow [2023-08-28 17:54:58,806 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=296, PETRI_DIFFERENCE_MINUEND_FLOW=396, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=516, PETRI_PLACES=100, PETRI_TRANSITIONS=83} [2023-08-28 17:54:58,807 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 37 predicate places. [2023-08-28 17:54:58,807 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 83 transitions, 516 flow [2023-08-28 17:54:58,808 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 87.38095238095238) internal successors, (1835), 21 states have internal predecessors, (1835), 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) [2023-08-28 17:54:58,808 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-28 17:54:58,808 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-28 17:54:58,816 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-08-28 17:54:59,014 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-08-28 17:54:59,014 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thr1Err7ASSERT_VIOLATIONDATA_RACE === [thr1Err5ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2023-08-28 17:54:59,015 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-28 17:54:59,015 INFO L85 PathProgramCache]: Analyzing trace with hash 1220903057, now seen corresponding path program 1 times [2023-08-28 17:54:59,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-28 17:54:59,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051953408] [2023-08-28 17:54:59,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-28 17:54:59,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-28 17:54:59,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-28 17:55:00,837 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-28 17:55:00,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-28 17:55:00,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051953408] [2023-08-28 17:55:00,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1051953408] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-28 17:55:00,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [772952462] [2023-08-28 17:55:00,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-28 17:55:00,838 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-28 17:55:00,838 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-28 17:55:00,841 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-28 17:55:00,866 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-28 17:55:01,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-28 17:55:01,243 INFO L263 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 69 conjunts are in the unsatisfiable core [2023-08-28 17:55:01,245 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-28 17:55:01,263 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-28 17:55:01,263 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-08-28 17:55:01,335 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 41 [2023-08-28 17:55:01,405 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 41 [2023-08-28 17:55:02,056 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 106 treesize of output 42 [2023-08-28 17:55:02,817 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-28 17:55:02,820 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-28 17:55:02,821 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-28 17:55:02,823 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-28 17:55:02,824 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-28 17:55:02,826 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-28 17:55:02,827 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-28 17:55:02,853 INFO L321 Elim1Store]: treesize reduction 75, result has 11.8 percent of original size [2023-08-28 17:55:02,854 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 9 select indices, 9 select index equivalence classes, 26 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 10 case distinctions, treesize of input 74 treesize of output 37 [2023-08-28 17:55:03,051 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-28 17:55:03,052 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-28 17:55:03,089 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 4 [2023-08-28 17:55:03,479 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-28 17:55:03,480 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 124 treesize of output 54 [2023-08-28 17:55:04,064 WARN L839 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_487 (Array Int Int)) (|aux_div_v_thr1Thread1of2ForFork0_~offset~0#1_39_49| Int)) (or (< |aux_div_v_thr1Thread1of2ForFork0_~offset~0#1_39_49| 0) (<= 3 |aux_div_v_thr1Thread1of2ForFork0_~offset~0#1_39_49|) (< 0 (+ 2147483649 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t~0#1.base| v_ArrVal_487) |c_~#storage~0.base|) (+ (* |aux_div_v_thr1Thread1of2ForFork0_~offset~0#1_39_49| 8) 4 |c_~#storage~0.offset|)))))) (forall ((v_ArrVal_487 (Array Int Int)) (|aux_div_v_thr1Thread1of2ForFork0_~offset~0#1_39_49| Int)) (or (< |aux_div_v_thr1Thread1of2ForFork0_~offset~0#1_39_49| 0) (<= 3 |aux_div_v_thr1Thread1of2ForFork0_~offset~0#1_39_49|) (forall ((|aux_div_v_thr1Thread2of2ForFork0_~offset~0#1_42_49| Int)) (or (< |aux_div_v_thr1Thread2of2ForFork0_~offset~0#1_42_49| 0) (let ((.cse0 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t~0#1.base| v_ArrVal_487) |c_~#storage~0.base|))) (< (select .cse0 (+ 4 (* |aux_div_v_thr1Thread2of2ForFork0_~offset~0#1_42_49| 8) |c_~#storage~0.offset|)) (+ (select .cse0 (+ (* |aux_div_v_thr1Thread1of2ForFork0_~offset~0#1_39_49| 8) 4 |c_~#storage~0.offset|)) 1))) (<= 3 |aux_div_v_thr1Thread2of2ForFork0_~offset~0#1_42_49|))))) (forall ((v_ArrVal_487 (Array Int Int)) (|aux_div_v_thr1Thread1of2ForFork0_~offset~0#1_39_49| Int)) (or (< |aux_div_v_thr1Thread1of2ForFork0_~offset~0#1_39_49| 0) (<= 3 |aux_div_v_thr1Thread1of2ForFork0_~offset~0#1_39_49|) (forall ((|aux_div_v_thr1Thread2of2ForFork0_~offset~0#1_42_49| Int)) (or (let ((.cse1 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t~0#1.base| v_ArrVal_487) |c_~#storage~0.base|))) (< (select .cse1 (+ (* |aux_div_v_thr1Thread2of2ForFork0_~offset~0#1_42_49| 8) |c_~#storage~0.offset|)) (+ (select .cse1 (+ (* |aux_div_v_thr1Thread1of2ForFork0_~offset~0#1_39_49| 8) 4 |c_~#storage~0.offset|)) 1))) (< |aux_div_v_thr1Thread2of2ForFork0_~offset~0#1_42_49| 0) (<= 3 |aux_div_v_thr1Thread2of2ForFork0_~offset~0#1_42_49|)))))) is different from false [2023-08-28 17:55:04,240 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 1 trivial. 1 not checked. [2023-08-28 17:55:04,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [772952462] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-28 17:55:04,241 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-28 17:55:04,241 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 35 [2023-08-28 17:55:04,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616713417] [2023-08-28 17:55:04,241 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-28 17:55:04,242 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2023-08-28 17:55:04,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-28 17:55:04,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2023-08-28 17:55:04,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=1022, Unknown=1, NotChecked=66, Total=1260 [2023-08-28 17:55:04,514 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 296 [2023-08-28 17:55:04,516 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 83 transitions, 516 flow. Second operand has 36 states, 36 states have (on average 72.13888888888889) internal successors, (2597), 36 states have internal predecessors, (2597), 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) [2023-08-28 17:55:04,516 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-28 17:55:04,516 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 296 [2023-08-28 17:55:04,516 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-28 17:55:10,047 INFO L130 PetriNetUnfolder]: 3717/6870 cut-off events. [2023-08-28 17:55:10,048 INFO L131 PetriNetUnfolder]: For 10667/10691 co-relation queries the response was YES. [2023-08-28 17:55:10,064 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21141 conditions, 6870 events. 3717/6870 cut-off events. For 10667/10691 co-relation queries the response was YES. Maximal size of possible extension queue 233. Compared 50180 event pairs, 105 based on Foata normal form. 6/6801 useless extension candidates. Maximal degree in co-relation 21114. Up to 1313 conditions per place. [2023-08-28 17:55:10,088 INFO L137 encePairwiseOnDemand]: 284/296 looper letters, 376 selfloop transitions, 72 changer transitions 4/475 dead transitions. [2023-08-28 17:55:10,088 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 475 transitions, 3251 flow [2023-08-28 17:55:10,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2023-08-28 17:55:10,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2023-08-28 17:55:10,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 2960 transitions. [2023-08-28 17:55:10,098 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2702702702702703 [2023-08-28 17:55:10,098 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 2960 transitions. [2023-08-28 17:55:10,098 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 2960 transitions. [2023-08-28 17:55:10,100 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-28 17:55:10,100 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 2960 transitions. [2023-08-28 17:55:10,106 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 80.0) internal successors, (2960), 37 states have internal predecessors, (2960), 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) [2023-08-28 17:55:10,118 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 296.0) internal successors, (11248), 38 states have internal predecessors, (11248), 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) [2023-08-28 17:55:10,120 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 296.0) internal successors, (11248), 38 states have internal predecessors, (11248), 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) [2023-08-28 17:55:10,121 INFO L175 Difference]: Start difference. First operand has 100 places, 83 transitions, 516 flow. Second operand 37 states and 2960 transitions. [2023-08-28 17:55:10,121 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 475 transitions, 3251 flow [2023-08-28 17:55:10,150 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 475 transitions, 3183 flow, removed 9 selfloop flow, removed 2 redundant places. [2023-08-28 17:55:10,155 INFO L231 Difference]: Finished difference. Result has 159 places, 140 transitions, 1273 flow [2023-08-28 17:55:10,155 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=296, PETRI_DIFFERENCE_MINUEND_FLOW=499, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=1273, PETRI_PLACES=159, PETRI_TRANSITIONS=140} [2023-08-28 17:55:10,156 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 96 predicate places. [2023-08-28 17:55:10,156 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 140 transitions, 1273 flow [2023-08-28 17:55:10,157 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 72.13888888888889) internal successors, (2597), 36 states have internal predecessors, (2597), 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) [2023-08-28 17:55:10,157 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-28 17:55:10,158 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-28 17:55:10,164 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-08-28 17:55:10,364 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-08-28 17:55:10,365 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thr1Err7ASSERT_VIOLATIONDATA_RACE === [thr1Err5ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2023-08-28 17:55:10,365 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-28 17:55:10,365 INFO L85 PathProgramCache]: Analyzing trace with hash 1151770167, now seen corresponding path program 2 times [2023-08-28 17:55:10,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-28 17:55:10,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216662284] [2023-08-28 17:55:10,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-28 17:55:10,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-28 17:55:10,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-28 17:55:12,335 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-28 17:55:12,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-28 17:55:12,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1216662284] [2023-08-28 17:55:12,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1216662284] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-28 17:55:12,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1923263291] [2023-08-28 17:55:12,336 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-28 17:55:12,336 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-28 17:55:12,336 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-28 17:55:12,341 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-28 17:55:12,344 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-28 17:55:12,841 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-28 17:55:12,841 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-28 17:55:12,844 INFO L263 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 73 conjunts are in the unsatisfiable core [2023-08-28 17:55:12,846 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-28 17:55:12,861 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-28 17:55:12,861 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-08-28 17:55:12,904 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 41 [2023-08-28 17:55:12,970 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 41 [2023-08-28 17:55:13,628 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2023-08-28 17:55:14,073 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 106 treesize of output 42 [2023-08-28 17:55:14,181 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-28 17:55:14,183 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-28 17:55:14,184 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-28 17:55:14,186 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-28 17:55:14,188 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-28 17:55:14,190 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-28 17:55:14,191 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-28 17:55:14,210 INFO L321 Elim1Store]: treesize reduction 75, result has 11.8 percent of original size [2023-08-28 17:55:14,211 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 9 select indices, 9 select index equivalence classes, 26 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 10 case distinctions, treesize of input 74 treesize of output 37 [2023-08-28 17:55:14,357 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 106 treesize of output 42 [2023-08-28 17:55:14,457 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-28 17:55:14,457 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-28 17:55:14,510 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-28 17:55:14,510 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 124 treesize of output 54 [2023-08-28 17:55:14,641 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 124 treesize of output 54 [2023-08-28 17:55:14,816 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 4 [2023-08-28 17:55:15,879 WARN L839 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_565 (Array Int Int)) (|aux_div_v_thr1Thread1of2ForFork0_~offset~0#1_41_49| Int)) (let ((.cse0 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t~0#1.base| v_ArrVal_565) |c_~#storage~0.base|)) (.cse1 (* |aux_div_v_thr1Thread1of2ForFork0_~offset~0#1_41_49| 8))) (or (< |aux_div_v_thr1Thread1of2ForFork0_~offset~0#1_41_49| 0) (<= 3 |aux_div_v_thr1Thread1of2ForFork0_~offset~0#1_41_49|) (< 0 (+ 2147483649 (select .cse0 (+ 4 .cse1 |c_~#storage~0.offset|)))) (< 0 (+ 2147483649 (select .cse0 (+ .cse1 |c_~#storage~0.offset|))))))) (forall ((|aux_div_v_thr1Thread2of2ForFork0_~offset~0#1_44_49| Int) (v_ArrVal_565 (Array Int Int))) (or (forall ((|aux_div_v_thr1Thread1of2ForFork0_~offset~0#1_41_49| Int)) (let ((.cse3 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t~0#1.base| v_ArrVal_565) |c_~#storage~0.base|))) (let ((.cse2 (select .cse3 (+ (* |aux_div_v_thr1Thread2of2ForFork0_~offset~0#1_44_49| 8) 4 |c_~#storage~0.offset|))) (.cse4 (* |aux_div_v_thr1Thread1of2ForFork0_~offset~0#1_41_49| 8))) (or (< .cse2 (+ (select .cse3 (+ .cse4 |c_~#storage~0.offset|)) 1)) (< .cse2 (+ (select .cse3 (+ 4 .cse4 |c_~#storage~0.offset|)) 1)) (< |aux_div_v_thr1Thread1of2ForFork0_~offset~0#1_41_49| 0) (<= 3 |aux_div_v_thr1Thread1of2ForFork0_~offset~0#1_41_49|))))) (<= 3 |aux_div_v_thr1Thread2of2ForFork0_~offset~0#1_44_49|) (< |aux_div_v_thr1Thread2of2ForFork0_~offset~0#1_44_49| 0))) (forall ((|aux_div_v_thr1Thread2of2ForFork0_~offset~0#1_44_49| Int) (v_ArrVal_565 (Array Int Int))) (or (<= 3 |aux_div_v_thr1Thread2of2ForFork0_~offset~0#1_44_49|) (< |aux_div_v_thr1Thread2of2ForFork0_~offset~0#1_44_49| 0) (forall ((|aux_div_v_thr1Thread1of2ForFork0_~offset~0#1_41_49| Int)) (let ((.cse6 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t~0#1.base| v_ArrVal_565) |c_~#storage~0.base|))) (let ((.cse5 (select .cse6 (+ (* |aux_div_v_thr1Thread2of2ForFork0_~offset~0#1_44_49| 8) |c_~#storage~0.offset|))) (.cse7 (* |aux_div_v_thr1Thread1of2ForFork0_~offset~0#1_41_49| 8))) (or (< .cse5 (+ (select .cse6 (+ 4 .cse7 |c_~#storage~0.offset|)) 1)) (< .cse5 (+ (select .cse6 (+ .cse7 |c_~#storage~0.offset|)) 1)) (< |aux_div_v_thr1Thread1of2ForFork0_~offset~0#1_41_49| 0) (<= 3 |aux_div_v_thr1Thread1of2ForFork0_~offset~0#1_41_49|)))))))) is different from false [2023-08-28 17:55:16,155 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 1 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 1 not checked. [2023-08-28 17:55:16,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1923263291] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-28 17:55:16,155 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-28 17:55:16,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14, 14] total 37 [2023-08-28 17:55:16,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767405212] [2023-08-28 17:55:16,155 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-28 17:55:16,156 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2023-08-28 17:55:16,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-28 17:55:16,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2023-08-28 17:55:16,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=198, Invalid=1137, Unknown=1, NotChecked=70, Total=1406 [2023-08-28 17:55:16,380 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 296 [2023-08-28 17:55:16,382 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 140 transitions, 1273 flow. Second operand has 38 states, 38 states have (on average 71.92105263157895) internal successors, (2733), 38 states have internal predecessors, (2733), 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) [2023-08-28 17:55:16,382 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-28 17:55:16,382 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 296 [2023-08-28 17:55:16,382 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-28 17:55:25,251 INFO L130 PetriNetUnfolder]: 7193/13347 cut-off events. [2023-08-28 17:55:25,251 INFO L131 PetriNetUnfolder]: For 46333/46394 co-relation queries the response was YES. [2023-08-28 17:55:25,397 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47287 conditions, 13347 events. 7193/13347 cut-off events. For 46333/46394 co-relation queries the response was YES. Maximal size of possible extension queue 447. Compared 108281 event pairs, 1009 based on Foata normal form. 14/13242 useless extension candidates. Maximal degree in co-relation 47234. Up to 2457 conditions per place. [2023-08-28 17:55:25,445 INFO L137 encePairwiseOnDemand]: 285/296 looper letters, 533 selfloop transitions, 145 changer transitions 3/704 dead transitions. [2023-08-28 17:55:25,445 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 704 transitions, 5959 flow [2023-08-28 17:55:25,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2023-08-28 17:55:25,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2023-08-28 17:55:25,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 4087 transitions. [2023-08-28 17:55:25,456 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.270733969263381 [2023-08-28 17:55:25,456 INFO L72 ComplementDD]: Start complementDD. Operand 51 states and 4087 transitions. [2023-08-28 17:55:25,456 INFO L73 IsDeterministic]: Start isDeterministic. Operand 51 states and 4087 transitions. [2023-08-28 17:55:25,458 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-28 17:55:25,459 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 51 states and 4087 transitions. [2023-08-28 17:55:25,467 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 52 states, 51 states have (on average 80.13725490196079) internal successors, (4087), 51 states have internal predecessors, (4087), 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) [2023-08-28 17:55:25,483 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 52 states, 52 states have (on average 296.0) internal successors, (15392), 52 states have internal predecessors, (15392), 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) [2023-08-28 17:55:25,486 INFO L81 ComplementDD]: Finished complementDD. Result has 52 states, 52 states have (on average 296.0) internal successors, (15392), 52 states have internal predecessors, (15392), 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) [2023-08-28 17:55:25,486 INFO L175 Difference]: Start difference. First operand has 159 places, 140 transitions, 1273 flow. Second operand 51 states and 4087 transitions. [2023-08-28 17:55:25,487 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 704 transitions, 5959 flow [2023-08-28 17:55:25,748 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 704 transitions, 5549 flow, removed 66 selfloop flow, removed 10 redundant places. [2023-08-28 17:55:25,756 INFO L231 Difference]: Finished difference. Result has 215 places, 254 transitions, 2913 flow [2023-08-28 17:55:25,757 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=296, PETRI_DIFFERENCE_MINUEND_FLOW=1152, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=51, PETRI_FLOW=2913, PETRI_PLACES=215, PETRI_TRANSITIONS=254} [2023-08-28 17:55:25,757 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 152 predicate places. [2023-08-28 17:55:25,757 INFO L495 AbstractCegarLoop]: Abstraction has has 215 places, 254 transitions, 2913 flow [2023-08-28 17:55:25,758 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 71.92105263157895) internal successors, (2733), 38 states have internal predecessors, (2733), 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) [2023-08-28 17:55:25,758 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-28 17:55:25,759 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-28 17:55:25,765 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-08-28 17:55:25,964 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-28 17:55:25,965 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thr1Err7ASSERT_VIOLATIONDATA_RACE === [thr1Err5ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2023-08-28 17:55:25,965 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-28 17:55:25,965 INFO L85 PathProgramCache]: Analyzing trace with hash -1831997338, now seen corresponding path program 1 times [2023-08-28 17:55:25,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-28 17:55:25,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944686406] [2023-08-28 17:55:25,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-28 17:55:25,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-28 17:55:26,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-28 17:55:27,807 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-28 17:55:27,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-28 17:55:27,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1944686406] [2023-08-28 17:55:27,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1944686406] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-28 17:55:27,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1100352789] [2023-08-28 17:55:27,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-28 17:55:27,808 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-28 17:55:27,808 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-28 17:55:27,809 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-28 17:55:27,811 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-28 17:55:28,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-28 17:55:28,189 INFO L263 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 65 conjunts are in the unsatisfiable core [2023-08-28 17:55:28,193 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-28 17:55:28,206 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-28 17:55:28,206 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-08-28 17:55:28,261 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 41 [2023-08-28 17:55:28,346 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 41 [2023-08-28 17:55:28,782 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 122 treesize of output 58 [2023-08-28 17:55:29,536 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-28 17:55:29,537 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 16 [2023-08-28 17:55:29,639 INFO L321 Elim1Store]: treesize reduction 42, result has 14.3 percent of original size [2023-08-28 17:55:29,640 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 22 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 6 case distinctions, treesize of input 65 treesize of output 31 [2023-08-28 17:55:29,745 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-28 17:55:29,745 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-28 17:55:29,881 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-08-28 17:55:29,881 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 137 treesize of output 59 [2023-08-28 17:55:30,158 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-28 17:55:30,158 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 124 treesize of output 54 [2023-08-28 17:55:31,292 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-28 17:55:31,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1100352789] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-28 17:55:31,293 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-28 17:55:31,293 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 13] total 36 [2023-08-28 17:55:31,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761579035] [2023-08-28 17:55:31,293 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-28 17:55:31,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2023-08-28 17:55:31,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-28 17:55:31,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2023-08-28 17:55:31,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=1188, Unknown=7, NotChecked=0, Total=1332 [2023-08-28 17:55:40,102 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 296 [2023-08-28 17:55:40,104 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 254 transitions, 2913 flow. Second operand has 37 states, 37 states have (on average 72.0) internal successors, (2664), 37 states have internal predecessors, (2664), 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) [2023-08-28 17:55:40,104 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-28 17:55:40,104 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 296 [2023-08-28 17:55:40,104 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-28 17:55:52,248 INFO L130 PetriNetUnfolder]: 13169/24419 cut-off events. [2023-08-28 17:55:52,248 INFO L131 PetriNetUnfolder]: For 87247/87347 co-relation queries the response was YES. [2023-08-28 17:55:52,360 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86688 conditions, 24419 events. 13169/24419 cut-off events. For 87247/87347 co-relation queries the response was YES. Maximal size of possible extension queue 843. Compared 219749 event pairs, 2771 based on Foata normal form. 36/24235 useless extension candidates. Maximal degree in co-relation 86622. Up to 4479 conditions per place. [2023-08-28 17:55:52,429 INFO L137 encePairwiseOnDemand]: 283/296 looper letters, 646 selfloop transitions, 228 changer transitions 2/899 dead transitions. [2023-08-28 17:55:52,430 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 272 places, 899 transitions, 8978 flow [2023-08-28 17:55:52,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2023-08-28 17:55:52,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2023-08-28 17:55:52,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 4611 transitions. [2023-08-28 17:55:52,439 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2685810810810811 [2023-08-28 17:55:52,440 INFO L72 ComplementDD]: Start complementDD. Operand 58 states and 4611 transitions. [2023-08-28 17:55:52,440 INFO L73 IsDeterministic]: Start isDeterministic. Operand 58 states and 4611 transitions. [2023-08-28 17:55:52,442 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-28 17:55:52,442 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 58 states and 4611 transitions. [2023-08-28 17:55:52,448 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 59 states, 58 states have (on average 79.5) internal successors, (4611), 58 states have internal predecessors, (4611), 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) [2023-08-28 17:55:52,463 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 59 states, 59 states have (on average 296.0) internal successors, (17464), 59 states have internal predecessors, (17464), 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) [2023-08-28 17:55:52,466 INFO L81 ComplementDD]: Finished complementDD. Result has 59 states, 59 states have (on average 296.0) internal successors, (17464), 59 states have internal predecessors, (17464), 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) [2023-08-28 17:55:52,466 INFO L175 Difference]: Start difference. First operand has 215 places, 254 transitions, 2913 flow. Second operand 58 states and 4611 transitions. [2023-08-28 17:55:52,467 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 272 places, 899 transitions, 8978 flow [2023-08-28 17:55:53,232 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 899 transitions, 8109 flow, removed 328 selfloop flow, removed 4 redundant places. [2023-08-28 17:55:53,240 INFO L231 Difference]: Finished difference. Result has 301 places, 380 transitions, 4698 flow [2023-08-28 17:55:53,240 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=296, PETRI_DIFFERENCE_MINUEND_FLOW=2428, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=254, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=115, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=58, PETRI_FLOW=4698, PETRI_PLACES=301, PETRI_TRANSITIONS=380} [2023-08-28 17:55:53,241 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 238 predicate places. [2023-08-28 17:55:53,241 INFO L495 AbstractCegarLoop]: Abstraction has has 301 places, 380 transitions, 4698 flow [2023-08-28 17:55:53,242 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 72.0) internal successors, (2664), 37 states have internal predecessors, (2664), 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) [2023-08-28 17:55:53,242 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-28 17:55:53,242 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-28 17:55:53,253 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-08-28 17:55:53,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-28 17:55:53,448 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thr1Err7ASSERT_VIOLATIONDATA_RACE === [thr1Err5ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2023-08-28 17:55:53,448 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-28 17:55:53,448 INFO L85 PathProgramCache]: Analyzing trace with hash 296938507, now seen corresponding path program 3 times [2023-08-28 17:55:53,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-28 17:55:53,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1362825091] [2023-08-28 17:55:53,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-28 17:55:53,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-28 17:55:53,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-28 17:55:57,352 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-28 17:55:57,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-28 17:55:57,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1362825091] [2023-08-28 17:55:57,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1362825091] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-28 17:55:57,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [613986680] [2023-08-28 17:55:57,353 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-28 17:55:57,353 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-28 17:55:57,353 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-28 17:55:57,354 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-28 17:55:57,356 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-08-28 17:55:57,686 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-08-28 17:55:57,687 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-28 17:55:57,689 INFO L263 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 80 conjunts are in the unsatisfiable core [2023-08-28 17:55:57,692 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-28 17:55:57,707 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-28 17:55:57,707 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-08-28 17:55:57,751 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 41 [2023-08-28 17:55:57,815 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 41 [2023-08-28 17:55:58,675 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 106 treesize of output 42 [2023-08-28 17:55:59,155 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-28 17:55:59,157 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-28 17:55:59,159 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-28 17:55:59,161 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-28 17:55:59,209 INFO L321 Elim1Store]: treesize reduction 62, result has 47.0 percent of original size [2023-08-28 17:55:59,209 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 9 select indices, 9 select index equivalence classes, 22 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 14 case distinctions, treesize of input 72 treesize of output 82 [2023-08-28 17:55:59,640 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-28 17:55:59,843 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-28 17:55:59,844 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-28 17:56:00,290 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-28 17:56:00,292 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 124 treesize of output 54 [2023-08-28 17:56:03,082 WARN L839 $PredicateComparison]: unable to prove that (and (forall ((|aux_div_v_thr1Thread1of2ForFork0_~offset~0#1_45_49| Int) (v_ArrVal_723 (Array Int Int))) (or (<= 3 |aux_div_v_thr1Thread1of2ForFork0_~offset~0#1_45_49|) (< |aux_div_v_thr1Thread1of2ForFork0_~offset~0#1_45_49| 0) (forall ((|aux_div_v_thr1Thread2of2ForFork0_~offset~0#1_48_49| Int)) (or (< |aux_div_v_thr1Thread2of2ForFork0_~offset~0#1_48_49| 0) (forall ((v_subst_1 Int)) (let ((.cse0 (* 2 |aux_div_v_thr1Thread2of2ForFork0_~offset~0#1_48_49|))) (or (<= (+ 2 .cse0) v_subst_1) (< v_subst_1 (+ .cse0 1)) (let ((.cse1 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t~0#1.base| v_ArrVal_723) |c_~#storage~0.base|))) (< (select .cse1 (+ (* 4 v_subst_1) |c_~#storage~0.offset|)) (+ (select .cse1 (+ (* |aux_div_v_thr1Thread1of2ForFork0_~offset~0#1_45_49| 8) 4 |c_~#storage~0.offset|)) 1)))))) (<= 3 |aux_div_v_thr1Thread2of2ForFork0_~offset~0#1_48_49|))))) (forall ((|aux_div_v_thr1Thread1of2ForFork0_~offset~0#1_45_49| Int) (v_ArrVal_723 (Array Int Int))) (or (<= 3 |aux_div_v_thr1Thread1of2ForFork0_~offset~0#1_45_49|) (forall ((|aux_div_v_thr1Thread2of2ForFork0_~offset~0#1_48_49| Int)) (or (< |aux_div_v_thr1Thread2of2ForFork0_~offset~0#1_48_49| 0) (<= 3 |aux_div_v_thr1Thread2of2ForFork0_~offset~0#1_48_49|) (let ((.cse2 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t~0#1.base| v_ArrVal_723) |c_~#storage~0.base|))) (< (select .cse2 (+ (* |aux_div_v_thr1Thread2of2ForFork0_~offset~0#1_48_49| 8) |c_~#storage~0.offset|)) (+ (select .cse2 (+ (* |aux_div_v_thr1Thread1of2ForFork0_~offset~0#1_45_49| 8) 4 |c_~#storage~0.offset|)) 1))))) (< |aux_div_v_thr1Thread1of2ForFork0_~offset~0#1_45_49| 0))) (forall ((|aux_div_v_thr1Thread1of2ForFork0_~offset~0#1_45_49| Int) (v_ArrVal_723 (Array Int Int))) (or (< 0 (+ 2147483649 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t~0#1.base| v_ArrVal_723) |c_~#storage~0.base|) (+ (* |aux_div_v_thr1Thread1of2ForFork0_~offset~0#1_45_49| 8) 4 |c_~#storage~0.offset|)))) (<= 3 |aux_div_v_thr1Thread1of2ForFork0_~offset~0#1_45_49|) (< |aux_div_v_thr1Thread1of2ForFork0_~offset~0#1_45_49| 0)))) is different from false [2023-08-28 17:56:03,330 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 1 trivial. 1 not checked. [2023-08-28 17:56:03,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [613986680] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-28 17:56:03,331 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-28 17:56:03,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14, 14] total 41 [2023-08-28 17:56:03,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432405203] [2023-08-28 17:56:03,332 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-28 17:56:03,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2023-08-28 17:56:03,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-28 17:56:03,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2023-08-28 17:56:03,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=1470, Unknown=1, NotChecked=78, Total=1722 [2023-08-28 17:56:03,904 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 296 [2023-08-28 17:56:03,905 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 301 places, 380 transitions, 4698 flow. Second operand has 42 states, 42 states have (on average 70.83333333333333) internal successors, (2975), 42 states have internal predecessors, (2975), 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) [2023-08-28 17:56:03,905 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-28 17:56:03,905 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 296 [2023-08-28 17:56:03,906 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-28 17:56:22,765 WARN L222 SmtUtils]: Spent 18.77s on a formula simplification. DAG size of input: 92 DAG size of output: 66 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-28 17:56:24,800 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-28 17:56:26,801 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-28 17:56:28,805 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-28 17:56:30,835 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-28 17:56:32,837 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-08-28 17:56:34,838 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-28 17:56:36,840 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-28 17:56:38,842 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-28 17:56:40,843 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-28 17:56:42,844 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-28 17:56:44,846 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-28 17:56:46,847 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-28 17:56:48,848 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-28 17:56:50,849 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-28 17:56:52,851 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-28 17:56:54,852 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-28 17:56:56,853 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-28 17:56:58,854 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-28 17:57:00,856 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-08-28 17:57:02,857 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-28 17:57:04,858 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-08-28 17:57:06,968 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-28 17:57:08,969 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-28 17:57:10,971 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-28 17:57:12,972 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-28 17:57:14,974 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-28 17:57:16,975 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-28 17:57:18,976 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-28 17:57:20,982 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-28 17:57:22,983 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-28 17:57:24,995 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-28 17:57:27,024 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-28 17:57:29,026 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-28 17:57:31,027 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-28 17:57:33,069 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-28 17:57:35,070 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-08-28 17:57:37,072 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-28 17:57:39,073 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-28 17:57:41,080 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-28 17:57:43,081 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-28 17:57:45,082 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-28 17:57:47,084 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-28 17:57:49,085 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-28 17:57:51,086 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-28 17:57:53,087 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-28 17:57:55,089 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-28 17:57:57,090 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-28 17:57:59,091 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-28 17:58:01,093 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-28 17:58:03,094 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-08-28 17:58:05,095 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-28 17:58:07,098 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-08-28 17:58:09,100 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-28 17:58:11,102 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-28 17:58:13,103 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-28 17:58:15,105 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-28 17:58:17,106 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-28 17:58:19,107 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-28 17:58:21,108 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-28 17:58:23,110 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-28 17:58:25,111 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-28 17:58:27,112 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-28 17:58:29,147 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-28 17:58:31,148 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-28 17:58:33,289 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-28 17:58:35,290 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-28 17:58:37,292 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-28 17:58:39,293 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-08-28 17:58:41,388 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-28 17:58:43,551 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-28 17:58:45,552 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-28 17:58:47,553 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-28 17:58:49,554 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-28 17:58:51,587 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-28 17:58:53,588 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-28 17:58:55,589 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-28 17:58:57,590 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-28 17:58:59,592 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-28 17:59:01,593 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-28 17:59:03,594 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-28 17:59:05,595 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-28 17:59:07,871 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-28 17:59:09,873 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-28 17:59:11,910 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-28 17:59:13,912 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-28 17:59:15,913 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-28 17:59:17,915 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-28 17:59:19,916 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-28 17:59:21,917 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-28 17:59:23,919 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-28 17:59:25,920 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-28 17:59:27,921 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-28 17:59:29,923 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-28 17:59:31,955 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-28 17:59:49,215 INFO L130 PetriNetUnfolder]: 17105/31807 cut-off events. [2023-08-28 17:59:49,215 INFO L131 PetriNetUnfolder]: For 144400/144554 co-relation queries the response was YES. [2023-08-28 17:59:49,561 INFO L83 FinitePrefix]: Finished finitePrefix Result has 125304 conditions, 31807 events. 17105/31807 cut-off events. For 144400/144554 co-relation queries the response was YES. Maximal size of possible extension queue 1033. Compared 294952 event pairs, 1497 based on Foata normal form. 57/31550 useless extension candidates. Maximal degree in co-relation 125206. Up to 6239 conditions per place. [2023-08-28 17:59:49,775 INFO L137 encePairwiseOnDemand]: 281/296 looper letters, 612 selfloop transitions, 355 changer transitions 13/1003 dead transitions. [2023-08-28 17:59:49,776 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 352 places, 1003 transitions, 11438 flow [2023-08-28 17:59:49,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2023-08-28 17:59:49,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2023-08-28 17:59:49,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 4118 transitions. [2023-08-28 17:59:49,783 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.26754158004158 [2023-08-28 17:59:49,783 INFO L72 ComplementDD]: Start complementDD. Operand 52 states and 4118 transitions. [2023-08-28 17:59:49,783 INFO L73 IsDeterministic]: Start isDeterministic. Operand 52 states and 4118 transitions. [2023-08-28 17:59:49,784 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-28 17:59:49,784 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 52 states and 4118 transitions. [2023-08-28 17:59:49,789 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 53 states, 52 states have (on average 79.1923076923077) internal successors, (4118), 52 states have internal predecessors, (4118), 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) [2023-08-28 17:59:49,800 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 53 states, 53 states have (on average 296.0) internal successors, (15688), 53 states have internal predecessors, (15688), 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) [2023-08-28 17:59:49,802 INFO L81 ComplementDD]: Finished complementDD. Result has 53 states, 53 states have (on average 296.0) internal successors, (15688), 53 states have internal predecessors, (15688), 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) [2023-08-28 17:59:49,802 INFO L175 Difference]: Start difference. First operand has 301 places, 380 transitions, 4698 flow. Second operand 52 states and 4118 transitions. [2023-08-28 17:59:49,802 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 352 places, 1003 transitions, 11438 flow [2023-08-28 17:59:51,012 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 343 places, 1003 transitions, 10657 flow, removed 234 selfloop flow, removed 9 redundant places. [2023-08-28 17:59:51,021 INFO L231 Difference]: Finished difference. Result has 359 places, 514 transitions, 7039 flow [2023-08-28 17:59:51,022 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=296, PETRI_DIFFERENCE_MINUEND_FLOW=4204, PETRI_DIFFERENCE_MINUEND_PLACES=292, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=380, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=227, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=52, PETRI_FLOW=7039, PETRI_PLACES=359, PETRI_TRANSITIONS=514} [2023-08-28 17:59:51,022 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 296 predicate places. [2023-08-28 17:59:51,022 INFO L495 AbstractCegarLoop]: Abstraction has has 359 places, 514 transitions, 7039 flow [2023-08-28 17:59:51,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 70.83333333333333) internal successors, (2975), 42 states have internal predecessors, (2975), 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) [2023-08-28 17:59:51,023 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-28 17:59:51,024 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-28 17:59:51,030 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-08-28 17:59:51,229 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-28 17:59:51,230 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting thr1Err7ASSERT_VIOLATIONDATA_RACE === [thr1Err5ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2023-08-28 17:59:51,230 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-28 17:59:51,230 INFO L85 PathProgramCache]: Analyzing trace with hash 1750481035, now seen corresponding path program 4 times [2023-08-28 17:59:51,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-28 17:59:51,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125061818] [2023-08-28 17:59:51,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-28 17:59:51,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-28 17:59:51,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-28 17:59:53,920 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-28 17:59:53,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-28 17:59:53,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125061818] [2023-08-28 17:59:53,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [125061818] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-28 17:59:53,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [456540632] [2023-08-28 17:59:53,921 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-28 17:59:53,921 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-28 17:59:53,921 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-28 17:59:53,925 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-28 17:59:53,929 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-08-28 17:59:54,386 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-28 17:59:54,387 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-28 17:59:54,390 INFO L263 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 93 conjunts are in the unsatisfiable core [2023-08-28 17:59:54,392 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-28 17:59:54,404 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-28 17:59:54,405 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-08-28 17:59:54,460 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 41 [2023-08-28 17:59:54,548 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 41 [2023-08-28 17:59:55,966 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-08-28 17:59:55,966 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 1 case distinctions, treesize of input 56 treesize of output 16 [2023-08-28 17:59:56,071 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-28 17:59:56,073 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-28 17:59:56,075 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-28 17:59:56,076 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-28 17:59:56,076 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-28 17:59:56,077 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-28 17:59:56,080 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-28 17:59:56,081 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-28 17:59:56,082 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-28 17:59:56,084 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-28 17:59:56,085 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-28 17:59:56,086 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-28 17:59:56,089 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-28 17:59:56,089 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-28 17:59:56,127 INFO L321 Elim1Store]: treesize reduction 100, result has 11.5 percent of original size [2023-08-28 17:59:56,127 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 10 select indices, 10 select index equivalence classes, 31 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 14 case distinctions, treesize of input 83 treesize of output 43 [2023-08-28 17:59:56,597 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-28 17:59:56,598 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-28 17:59:56,691 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-28 17:59:56,691 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 124 treesize of output 54 [2023-08-28 17:59:57,428 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-08-28 17:59:57,428 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 1 case distinctions, treesize of input 137 treesize of output 59 [2023-08-28 17:59:59,001 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-28 17:59:59,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [456540632] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-28 17:59:59,001 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-28 17:59:59,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 16, 15] total 43 [2023-08-28 17:59:59,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990956718] [2023-08-28 17:59:59,002 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-28 17:59:59,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2023-08-28 17:59:59,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-28 17:59:59,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2023-08-28 17:59:59,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=248, Invalid=1642, Unknown=2, NotChecked=0, Total=1892 [2023-08-28 18:00:09,413 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 296 [2023-08-28 18:00:09,414 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 359 places, 514 transitions, 7039 flow. Second operand has 44 states, 44 states have (on average 69.68181818181819) internal successors, (3066), 44 states have internal predecessors, (3066), 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) [2023-08-28 18:00:09,415 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-28 18:00:09,415 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 296 [2023-08-28 18:00:09,415 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-28 18:00:43,314 INFO L130 PetriNetUnfolder]: 25681/48096 cut-off events. [2023-08-28 18:00:43,314 INFO L131 PetriNetUnfolder]: For 275025/275209 co-relation queries the response was YES. [2023-08-28 18:00:44,174 INFO L83 FinitePrefix]: Finished finitePrefix Result has 199085 conditions, 48096 events. 25681/48096 cut-off events. For 275025/275209 co-relation queries the response was YES. Maximal size of possible extension queue 1581. Compared 478612 event pairs, 1282 based on Foata normal form. 50/47780 useless extension candidates. Maximal degree in co-relation 198978. Up to 8754 conditions per place. [2023-08-28 18:00:44,373 INFO L137 encePairwiseOnDemand]: 277/296 looper letters, 998 selfloop transitions, 865 changer transitions 42/1928 dead transitions. [2023-08-28 18:00:44,373 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 493 places, 1928 transitions, 23268 flow [2023-08-28 18:00:44,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 135 states. [2023-08-28 18:00:44,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2023-08-28 18:00:44,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 10284 transitions. [2023-08-28 18:00:44,395 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2573573573573574 [2023-08-28 18:00:44,395 INFO L72 ComplementDD]: Start complementDD. Operand 135 states and 10284 transitions. [2023-08-28 18:00:44,395 INFO L73 IsDeterministic]: Start isDeterministic. Operand 135 states and 10284 transitions. [2023-08-28 18:00:44,401 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-28 18:00:44,402 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 135 states and 10284 transitions. [2023-08-28 18:00:44,425 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 136 states, 135 states have (on average 76.17777777777778) internal successors, (10284), 135 states have internal predecessors, (10284), 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) [2023-08-28 18:00:44,467 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 136 states, 136 states have (on average 296.0) internal successors, (40256), 136 states have internal predecessors, (40256), 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) [2023-08-28 18:00:44,476 INFO L81 ComplementDD]: Finished complementDD. Result has 136 states, 136 states have (on average 296.0) internal successors, (40256), 136 states have internal predecessors, (40256), 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) [2023-08-28 18:00:44,476 INFO L175 Difference]: Start difference. First operand has 359 places, 514 transitions, 7039 flow. Second operand 135 states and 10284 transitions. [2023-08-28 18:00:44,476 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 493 places, 1928 transitions, 23268 flow [2023-08-28 18:00:49,022 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 477 places, 1928 transitions, 21248 flow, removed 698 selfloop flow, removed 16 redundant places. [2023-08-28 18:00:49,041 INFO L231 Difference]: Finished difference. Result has 525 places, 1002 transitions, 15381 flow [2023-08-28 18:00:49,042 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=296, PETRI_DIFFERENCE_MINUEND_FLOW=6150, PETRI_DIFFERENCE_MINUEND_PLACES=343, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=514, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=383, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=135, PETRI_FLOW=15381, PETRI_PLACES=525, PETRI_TRANSITIONS=1002} [2023-08-28 18:00:49,042 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 462 predicate places. [2023-08-28 18:00:49,042 INFO L495 AbstractCegarLoop]: Abstraction has has 525 places, 1002 transitions, 15381 flow [2023-08-28 18:00:49,043 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 69.68181818181819) internal successors, (3066), 44 states have internal predecessors, (3066), 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) [2023-08-28 18:00:49,043 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-28 18:00:49,043 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-28 18:00:49,051 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-08-28 18:00:49,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2023-08-28 18:00:49,246 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting thr1Err7ASSERT_VIOLATIONDATA_RACE === [thr1Err5ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2023-08-28 18:00:49,247 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-28 18:00:49,247 INFO L85 PathProgramCache]: Analyzing trace with hash 2107511747, now seen corresponding path program 5 times [2023-08-28 18:00:49,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-28 18:00:49,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137927312] [2023-08-28 18:00:49,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-28 18:00:49,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-28 18:00:49,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-28 18:00:51,884 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-28 18:00:51,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-28 18:00:51,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137927312] [2023-08-28 18:00:51,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [137927312] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-28 18:00:51,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2054158561] [2023-08-28 18:00:51,885 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-28 18:00:51,885 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-28 18:00:51,885 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-28 18:00:51,886 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-28 18:00:51,888 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-08-28 18:00:52,435 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2023-08-28 18:00:52,435 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-28 18:00:52,438 INFO L263 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 75 conjunts are in the unsatisfiable core [2023-08-28 18:00:52,440 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-28 18:00:52,456 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-28 18:00:52,457 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-08-28 18:00:52,496 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 41 [2023-08-28 18:00:52,560 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 41 [2023-08-28 18:00:53,364 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 122 treesize of output 58 [2023-08-28 18:00:53,721 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-28 18:00:53,724 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-28 18:00:53,725 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-28 18:00:53,728 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-28 18:00:53,728 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-28 18:00:53,730 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-28 18:00:53,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-28 18:00:53,733 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-28 18:00:53,767 INFO L321 Elim1Store]: treesize reduction 108, result has 10.7 percent of original size [2023-08-28 18:00:53,767 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 10 select indices, 10 select index equivalence classes, 31 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 14 case distinctions, treesize of input 85 treesize of output 43 [2023-08-28 18:00:54,078 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-28 18:00:54,078 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-28 18:00:54,145 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-28 18:00:54,146 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 124 treesize of output 54 [2023-08-28 18:00:54,597 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 124 treesize of output 54 [2023-08-28 18:00:57,508 WARN L839 $PredicateComparison]: unable to prove that (and (forall ((|aux_div_v_thr1Thread1of2ForFork0_~offset~0#1_49_49| Int) (v_ArrVal_882 (Array Int Int))) (let ((.cse0 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t~0#1.base| v_ArrVal_882) |c_~#storage~0.base|)) (.cse2 (* |aux_div_v_thr1Thread1of2ForFork0_~offset~0#1_49_49| 8))) (let ((.cse1 (select .cse0 (+ .cse2 |c_~#storage~0.offset|)))) (or (< |aux_div_v_thr1Thread1of2ForFork0_~offset~0#1_49_49| 0) (forall ((|aux_div_v_thr1Thread2of2ForFork0_~offset~0#1_52_49| Int)) (or (< |aux_div_v_thr1Thread2of2ForFork0_~offset~0#1_52_49| 0) (<= (select .cse0 (+ (* |aux_div_v_thr1Thread2of2ForFork0_~offset~0#1_52_49| 8) |c_~#storage~0.offset|)) .cse1) (<= 3 |aux_div_v_thr1Thread2of2ForFork0_~offset~0#1_52_49|))) (<= 3 |aux_div_v_thr1Thread1of2ForFork0_~offset~0#1_49_49|) (< .cse1 (select .cse0 (+ .cse2 4 |c_~#storage~0.offset|))))))) (forall ((|aux_div_v_thr1Thread1of2ForFork0_~offset~0#1_49_49| Int) (v_ArrVal_882 (Array Int Int))) (let ((.cse4 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t~0#1.base| v_ArrVal_882) |c_~#storage~0.base|)) (.cse5 (* |aux_div_v_thr1Thread1of2ForFork0_~offset~0#1_49_49| 8))) (let ((.cse3 (select .cse4 (+ .cse5 4 |c_~#storage~0.offset|)))) (or (< |aux_div_v_thr1Thread1of2ForFork0_~offset~0#1_49_49| 0) (<= .cse3 (select .cse4 (+ .cse5 |c_~#storage~0.offset|))) (forall ((|aux_div_v_thr1Thread2of2ForFork0_~offset~0#1_52_49| Int)) (or (< |aux_div_v_thr1Thread2of2ForFork0_~offset~0#1_52_49| 0) (<= (select .cse4 (+ (* |aux_div_v_thr1Thread2of2ForFork0_~offset~0#1_52_49| 8) |c_~#storage~0.offset|)) .cse3) (<= 3 |aux_div_v_thr1Thread2of2ForFork0_~offset~0#1_52_49|))) (<= 3 |aux_div_v_thr1Thread1of2ForFork0_~offset~0#1_49_49|))))) (forall ((|aux_div_v_thr1Thread1of2ForFork0_~offset~0#1_49_49| Int) (v_ArrVal_882 (Array Int Int))) (let ((.cse7 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t~0#1.base| v_ArrVal_882) |c_~#storage~0.base|)) (.cse8 (* |aux_div_v_thr1Thread1of2ForFork0_~offset~0#1_49_49| 8))) (let ((.cse6 (select .cse7 (+ .cse8 |c_~#storage~0.offset|)))) (or (< |aux_div_v_thr1Thread1of2ForFork0_~offset~0#1_49_49| 0) (<= 3 |aux_div_v_thr1Thread1of2ForFork0_~offset~0#1_49_49|) (< .cse6 (select .cse7 (+ .cse8 4 |c_~#storage~0.offset|))) (forall ((|aux_div_v_thr1Thread2of2ForFork0_~offset~0#1_52_49| Int)) (or (< |aux_div_v_thr1Thread2of2ForFork0_~offset~0#1_52_49| 0) (<= (select .cse7 (+ (* |aux_div_v_thr1Thread2of2ForFork0_~offset~0#1_52_49| 8) 4 |c_~#storage~0.offset|)) .cse6) (<= 3 |aux_div_v_thr1Thread2of2ForFork0_~offset~0#1_52_49|))))))) (forall ((|aux_div_v_thr1Thread1of2ForFork0_~offset~0#1_49_49| Int) (v_ArrVal_882 (Array Int Int))) (let ((.cse9 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t~0#1.base| v_ArrVal_882) |c_~#storage~0.base|)) (.cse10 (* |aux_div_v_thr1Thread1of2ForFork0_~offset~0#1_49_49| 8))) (or (< |aux_div_v_thr1Thread1of2ForFork0_~offset~0#1_49_49| 0) (< 0 (+ 2147483649 (select .cse9 (+ .cse10 |c_~#storage~0.offset|)))) (<= 3 |aux_div_v_thr1Thread1of2ForFork0_~offset~0#1_49_49|) (< 0 (+ 2147483649 (select .cse9 (+ .cse10 4 |c_~#storage~0.offset|))))))) (forall ((|aux_div_v_thr1Thread1of2ForFork0_~offset~0#1_49_49| Int) (v_ArrVal_882 (Array Int Int))) (let ((.cse12 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t~0#1.base| v_ArrVal_882) |c_~#storage~0.base|)) (.cse13 (* |aux_div_v_thr1Thread1of2ForFork0_~offset~0#1_49_49| 8))) (let ((.cse11 (select .cse12 (+ .cse13 4 |c_~#storage~0.offset|)))) (or (< |aux_div_v_thr1Thread1of2ForFork0_~offset~0#1_49_49| 0) (<= .cse11 (select .cse12 (+ .cse13 |c_~#storage~0.offset|))) (<= 3 |aux_div_v_thr1Thread1of2ForFork0_~offset~0#1_49_49|) (forall ((|aux_div_v_thr1Thread2of2ForFork0_~offset~0#1_52_49| Int)) (or (< |aux_div_v_thr1Thread2of2ForFork0_~offset~0#1_52_49| 0) (<= (select .cse12 (+ (* |aux_div_v_thr1Thread2of2ForFork0_~offset~0#1_52_49| 8) 4 |c_~#storage~0.offset|)) .cse11) (<= 3 |aux_div_v_thr1Thread2of2ForFork0_~offset~0#1_52_49|)))))))) is different from false [2023-08-28 18:00:57,860 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 1 trivial. 1 not checked. [2023-08-28 18:00:57,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2054158561] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-28 18:00:57,860 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-28 18:00:57,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14, 14] total 37 [2023-08-28 18:00:57,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620260504] [2023-08-28 18:00:57,861 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-28 18:00:57,861 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2023-08-28 18:00:57,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-28 18:00:57,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2023-08-28 18:00:57,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=1145, Unknown=1, NotChecked=70, Total=1406 [2023-08-28 18:00:58,041 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 296 [2023-08-28 18:00:58,043 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 525 places, 1002 transitions, 15381 flow. Second operand has 38 states, 38 states have (on average 71.92105263157895) internal successors, (2733), 38 states have internal predecessors, (2733), 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) [2023-08-28 18:00:58,043 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-28 18:00:58,043 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 296 [2023-08-28 18:00:58,043 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-28 18:01:54,090 INFO L130 PetriNetUnfolder]: 42221/79095 cut-off events. [2023-08-28 18:01:54,091 INFO L131 PetriNetUnfolder]: For 1069283/1069889 co-relation queries the response was YES. [2023-08-28 18:01:56,086 INFO L83 FinitePrefix]: Finished finitePrefix Result has 413403 conditions, 79095 events. 42221/79095 cut-off events. For 1069283/1069889 co-relation queries the response was YES. Maximal size of possible extension queue 2773. Compared 848107 event pairs, 6541 based on Foata normal form. 140/78445 useless extension candidates. Maximal degree in co-relation 413258. Up to 14610 conditions per place. [2023-08-28 18:01:56,699 INFO L137 encePairwiseOnDemand]: 285/296 looper letters, 1377 selfloop transitions, 891 changer transitions 25/2316 dead transitions. [2023-08-28 18:01:56,700 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 590 places, 2316 transitions, 37925 flow [2023-08-28 18:01:56,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2023-08-28 18:01:56,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2023-08-28 18:01:56,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 5443 transitions. [2023-08-28 18:01:56,708 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.27445542557482855 [2023-08-28 18:01:56,708 INFO L72 ComplementDD]: Start complementDD. Operand 67 states and 5443 transitions. [2023-08-28 18:01:56,708 INFO L73 IsDeterministic]: Start isDeterministic. Operand 67 states and 5443 transitions. [2023-08-28 18:01:56,709 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-28 18:01:56,710 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 67 states and 5443 transitions. [2023-08-28 18:01:56,716 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 68 states, 67 states have (on average 81.23880597014926) internal successors, (5443), 67 states have internal predecessors, (5443), 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) [2023-08-28 18:01:56,730 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 68 states, 68 states have (on average 296.0) internal successors, (20128), 68 states have internal predecessors, (20128), 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) [2023-08-28 18:01:56,732 INFO L81 ComplementDD]: Finished complementDD. Result has 68 states, 68 states have (on average 296.0) internal successors, (20128), 68 states have internal predecessors, (20128), 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) [2023-08-28 18:01:56,733 INFO L175 Difference]: Start difference. First operand has 525 places, 1002 transitions, 15381 flow. Second operand 67 states and 5443 transitions. [2023-08-28 18:01:56,733 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 590 places, 2316 transitions, 37925 flow [2023-08-28 18:02:16,901 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 568 places, 2316 transitions, 35045 flow, removed 1156 selfloop flow, removed 22 redundant places. [2023-08-28 18:02:16,932 INFO L231 Difference]: Finished difference. Result has 587 places, 1468 transitions, 25710 flow [2023-08-28 18:02:16,933 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=296, PETRI_DIFFERENCE_MINUEND_FLOW=13896, PETRI_DIFFERENCE_MINUEND_PLACES=502, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1002, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=487, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=472, PETRI_DIFFERENCE_SUBTRAHEND_STATES=67, PETRI_FLOW=25710, PETRI_PLACES=587, PETRI_TRANSITIONS=1468} [2023-08-28 18:02:16,933 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 524 predicate places. [2023-08-28 18:02:16,934 INFO L495 AbstractCegarLoop]: Abstraction has has 587 places, 1468 transitions, 25710 flow [2023-08-28 18:02:16,934 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 71.92105263157895) internal successors, (2733), 38 states have internal predecessors, (2733), 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) [2023-08-28 18:02:16,934 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-28 18:02:16,934 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-28 18:02:16,944 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-08-28 18:02:17,142 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2023-08-28 18:02:17,142 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting thr1Err7ASSERT_VIOLATIONDATA_RACE === [thr1Err5ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2023-08-28 18:02:17,143 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-28 18:02:17,143 INFO L85 PathProgramCache]: Analyzing trace with hash -1491106621, now seen corresponding path program 6 times [2023-08-28 18:02:17,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-28 18:02:17,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458660854] [2023-08-28 18:02:17,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-28 18:02:17,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-28 18:02:17,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-28 18:02:18,920 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-28 18:02:18,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-28 18:02:18,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458660854] [2023-08-28 18:02:18,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [458660854] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-28 18:02:18,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [707975022] [2023-08-28 18:02:18,921 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-28 18:02:18,921 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-28 18:02:18,921 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-28 18:02:18,922 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-28 18:02:18,923 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-08-28 18:02:19,341 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2023-08-28 18:02:19,342 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-28 18:02:19,345 INFO L263 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 73 conjunts are in the unsatisfiable core [2023-08-28 18:02:19,347 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-28 18:02:19,359 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-28 18:02:19,359 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-08-28 18:02:19,408 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 41 [2023-08-28 18:02:19,469 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 41 [2023-08-28 18:02:20,236 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 106 treesize of output 42 [2023-08-28 18:02:20,496 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-28 18:02:20,499 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-28 18:02:20,501 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-28 18:02:20,502 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-28 18:02:20,526 INFO L321 Elim1Store]: treesize reduction 75, result has 11.8 percent of original size [2023-08-28 18:02:20,526 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 9 select indices, 9 select index equivalence classes, 26 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 10 case distinctions, treesize of input 76 treesize of output 37 [2023-08-28 18:02:20,771 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 106 treesize of output 42 [2023-08-28 18:02:20,873 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-28 18:02:20,873 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-28 18:02:20,920 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-28 18:02:20,920 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 124 treesize of output 54 [2023-08-28 18:02:21,092 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-28 18:02:21,092 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 124 treesize of output 54 [2023-08-28 18:02:22,294 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-28 18:02:22,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [707975022] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-28 18:02:22,295 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-28 18:02:22,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 12] total 34 [2023-08-28 18:02:22,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584489102] [2023-08-28 18:02:22,295 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-28 18:02:22,296 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2023-08-28 18:02:22,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-28 18:02:22,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2023-08-28 18:02:22,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=1045, Unknown=5, NotChecked=0, Total=1190 [2023-08-28 18:02:27,345 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-28 18:02:27,348 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 296 [2023-08-28 18:02:27,349 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 587 places, 1468 transitions, 25710 flow. Second operand has 35 states, 35 states have (on average 72.17142857142858) internal successors, (2526), 35 states have internal predecessors, (2526), 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) [2023-08-28 18:02:27,349 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-28 18:02:27,349 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 296 [2023-08-28 18:02:27,349 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-28 18:03:12,634 INFO L130 PetriNetUnfolder]: 50655/95063 cut-off events. [2023-08-28 18:03:12,634 INFO L131 PetriNetUnfolder]: For 1391776/1392654 co-relation queries the response was YES. [2023-08-28 18:03:15,227 INFO L83 FinitePrefix]: Finished finitePrefix Result has 504141 conditions, 95063 events. 50655/95063 cut-off events. For 1391776/1392654 co-relation queries the response was YES. Maximal size of possible extension queue 3475. Compared 1046428 event pairs, 14758 based on Foata normal form. 221/94234 useless extension candidates. Maximal degree in co-relation 503982. Up to 25062 conditions per place. [2023-08-28 18:03:15,622 INFO L137 encePairwiseOnDemand]: 284/296 looper letters, 1150 selfloop transitions, 987 changer transitions 15/2175 dead transitions. [2023-08-28 18:03:15,623 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 634 places, 2175 transitions, 40077 flow [2023-08-28 18:03:15,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2023-08-28 18:03:15,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2023-08-28 18:03:15,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 3840 transitions. [2023-08-28 18:03:15,626 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2702702702702703 [2023-08-28 18:03:15,626 INFO L72 ComplementDD]: Start complementDD. Operand 48 states and 3840 transitions. [2023-08-28 18:03:15,626 INFO L73 IsDeterministic]: Start isDeterministic. Operand 48 states and 3840 transitions. [2023-08-28 18:03:15,627 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-28 18:03:15,627 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 48 states and 3840 transitions. [2023-08-28 18:03:15,632 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 49 states, 48 states have (on average 80.0) internal successors, (3840), 48 states have internal predecessors, (3840), 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) [2023-08-28 18:03:15,641 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 49 states, 49 states have (on average 296.0) internal successors, (14504), 49 states have internal predecessors, (14504), 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) [2023-08-28 18:03:15,643 INFO L81 ComplementDD]: Finished complementDD. Result has 49 states, 49 states have (on average 296.0) internal successors, (14504), 49 states have internal predecessors, (14504), 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) [2023-08-28 18:03:15,643 INFO L175 Difference]: Start difference. First operand has 587 places, 1468 transitions, 25710 flow. Second operand 48 states and 3840 transitions. [2023-08-28 18:03:15,643 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 634 places, 2175 transitions, 40077 flow [2023-08-28 18:03:51,884 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 615 places, 2175 transitions, 36994 flow, removed 1296 selfloop flow, removed 19 redundant places. [2023-08-28 18:03:51,915 INFO L231 Difference]: Finished difference. Result has 628 places, 1690 transitions, 31973 flow [2023-08-28 18:03:51,916 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=296, PETRI_DIFFERENCE_MINUEND_FLOW=23930, PETRI_DIFFERENCE_MINUEND_PLACES=568, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1468, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=798, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=562, PETRI_DIFFERENCE_SUBTRAHEND_STATES=48, PETRI_FLOW=31973, PETRI_PLACES=628, PETRI_TRANSITIONS=1690} [2023-08-28 18:03:51,917 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 565 predicate places. [2023-08-28 18:03:51,917 INFO L495 AbstractCegarLoop]: Abstraction has has 628 places, 1690 transitions, 31973 flow [2023-08-28 18:03:51,918 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 72.17142857142858) internal successors, (2526), 35 states have internal predecessors, (2526), 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) [2023-08-28 18:03:51,918 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-28 18:03:51,918 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-28 18:03:51,925 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-08-28 18:03:52,124 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2023-08-28 18:03:52,125 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting thr1Err7ASSERT_VIOLATIONDATA_RACE === [thr1Err5ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2023-08-28 18:03:52,125 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-28 18:03:52,125 INFO L85 PathProgramCache]: Analyzing trace with hash -268560905, now seen corresponding path program 7 times [2023-08-28 18:03:52,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-28 18:03:52,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079440975] [2023-08-28 18:03:52,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-28 18:03:52,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-28 18:03:52,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-28 18:03:54,025 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-28 18:03:54,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-28 18:03:54,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2079440975] [2023-08-28 18:03:54,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2079440975] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-28 18:03:54,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1085493543] [2023-08-28 18:03:54,025 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-28 18:03:54,025 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-28 18:03:54,026 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-28 18:03:54,026 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-28 18:03:54,028 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-08-28 18:03:54,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-28 18:03:54,513 INFO L263 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 74 conjunts are in the unsatisfiable core [2023-08-28 18:03:54,515 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-28 18:03:54,534 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-28 18:03:54,534 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-08-28 18:03:54,576 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 41 [2023-08-28 18:03:54,644 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 41 [2023-08-28 18:03:55,776 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 106 treesize of output 42 [2023-08-28 18:03:55,893 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-28 18:03:55,896 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-28 18:03:55,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-28 18:03:55,900 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-28 18:03:55,900 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-28 18:03:55,902 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-28 18:03:55,904 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-28 18:03:55,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-28 18:03:55,939 INFO L321 Elim1Store]: treesize reduction 108, result has 10.7 percent of original size [2023-08-28 18:03:55,939 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 10 select indices, 10 select index equivalence classes, 31 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 14 case distinctions, treesize of input 85 treesize of output 43 [2023-08-28 18:03:56,106 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 106 treesize of output 42 [2023-08-28 18:03:56,289 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-28 18:03:56,289 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-28 18:03:56,418 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-28 18:03:56,418 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 124 treesize of output 54 [2023-08-28 18:03:56,662 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 124 treesize of output 54 [2023-08-28 18:03:58,365 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-28 18:03:58,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1085493543] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-28 18:03:58,365 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-28 18:03:58,366 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 15, 15] total 39 [2023-08-28 18:03:58,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980957566] [2023-08-28 18:03:58,366 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-28 18:03:58,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2023-08-28 18:03:58,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-28 18:03:58,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2023-08-28 18:03:58,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=202, Invalid=1355, Unknown=3, NotChecked=0, Total=1560 [2023-08-28 18:04:02,295 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 296 [2023-08-28 18:04:02,296 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 628 places, 1690 transitions, 31973 flow. Second operand has 40 states, 40 states have (on average 71.825) internal successors, (2873), 40 states have internal predecessors, (2873), 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) [2023-08-28 18:04:02,296 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-28 18:04:02,296 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 296 [2023-08-28 18:04:02,296 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-28 18:05:15,390 INFO L130 PetriNetUnfolder]: 65475/122709 cut-off events. [2023-08-28 18:05:15,390 INFO L131 PetriNetUnfolder]: For 1621360/1622850 co-relation queries the response was YES. [2023-08-28 18:05:19,435 INFO L83 FinitePrefix]: Finished finitePrefix Result has 635064 conditions, 122709 events. 65475/122709 cut-off events. For 1621360/1622850 co-relation queries the response was YES. Maximal size of possible extension queue 4762. Compared 1395503 event pairs, 16130 based on Foata normal form. 347/121662 useless extension candidates. Maximal degree in co-relation 634899. Up to 25572 conditions per place. [2023-08-28 18:05:19,997 INFO L137 encePairwiseOnDemand]: 283/296 looper letters, 1388 selfloop transitions, 1335 changer transitions 33/2779 dead transitions. [2023-08-28 18:05:19,997 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 705 places, 2779 transitions, 51083 flow [2023-08-28 18:05:19,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2023-08-28 18:05:19,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2023-08-28 18:05:20,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 6272 transitions. [2023-08-28 18:05:20,005 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.27165627165627165 [2023-08-28 18:05:20,005 INFO L72 ComplementDD]: Start complementDD. Operand 78 states and 6272 transitions. [2023-08-28 18:05:20,005 INFO L73 IsDeterministic]: Start isDeterministic. Operand 78 states and 6272 transitions. [2023-08-28 18:05:20,008 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-28 18:05:20,009 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 78 states and 6272 transitions. [2023-08-28 18:05:20,016 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 79 states, 78 states have (on average 80.41025641025641) internal successors, (6272), 78 states have internal predecessors, (6272), 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) [2023-08-28 18:05:20,033 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 79 states, 79 states have (on average 296.0) internal successors, (23384), 79 states have internal predecessors, (23384), 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) [2023-08-28 18:05:20,037 INFO L81 ComplementDD]: Finished complementDD. Result has 79 states, 79 states have (on average 296.0) internal successors, (23384), 79 states have internal predecessors, (23384), 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) [2023-08-28 18:05:20,037 INFO L175 Difference]: Start difference. First operand has 628 places, 1690 transitions, 31973 flow. Second operand 78 states and 6272 transitions. [2023-08-28 18:05:20,037 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 705 places, 2779 transitions, 51083 flow [2023-08-28 18:06:07,040 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 683 places, 2779 transitions, 50347 flow, removed 168 selfloop flow, removed 22 redundant places. [2023-08-28 18:06:07,085 INFO L231 Difference]: Finished difference. Result has 704 places, 2030 transitions, 42662 flow [2023-08-28 18:06:07,087 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=296, PETRI_DIFFERENCE_MINUEND_FLOW=31405, PETRI_DIFFERENCE_MINUEND_PLACES=606, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1690, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1003, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=630, PETRI_DIFFERENCE_SUBTRAHEND_STATES=78, PETRI_FLOW=42662, PETRI_PLACES=704, PETRI_TRANSITIONS=2030} [2023-08-28 18:06:07,087 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 641 predicate places. [2023-08-28 18:06:07,087 INFO L495 AbstractCegarLoop]: Abstraction has has 704 places, 2030 transitions, 42662 flow [2023-08-28 18:06:07,088 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 71.825) internal successors, (2873), 40 states have internal predecessors, (2873), 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) [2023-08-28 18:06:07,088 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-28 18:06:07,088 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-28 18:06:07,097 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-08-28 18:06:07,289 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2023-08-28 18:06:07,290 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting thr1Err7ASSERT_VIOLATIONDATA_RACE === [thr1Err5ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2023-08-28 18:06:07,290 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-28 18:06:07,290 INFO L85 PathProgramCache]: Analyzing trace with hash -1621652098, now seen corresponding path program 2 times [2023-08-28 18:06:07,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-28 18:06:07,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500613695] [2023-08-28 18:06:07,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-28 18:06:07,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-28 18:06:07,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-28 18:06:10,145 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-28 18:06:10,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-28 18:06:10,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500613695] [2023-08-28 18:06:10,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1500613695] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-28 18:06:10,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2143677308] [2023-08-28 18:06:10,146 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-28 18:06:10,146 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-28 18:06:10,146 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-28 18:06:10,148 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-28 18:06:10,150 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-08-28 18:06:10,514 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-28 18:06:10,515 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-28 18:06:10,518 INFO L263 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 75 conjunts are in the unsatisfiable core [2023-08-28 18:06:10,520 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-28 18:06:10,533 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-28 18:06:10,533 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-08-28 18:06:10,581 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 41 [2023-08-28 18:06:10,644 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 41 [2023-08-28 18:06:12,221 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 122 treesize of output 58 [2023-08-28 18:06:12,334 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-28 18:06:12,336 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-28 18:06:12,337 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-28 18:06:12,339 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-28 18:06:12,341 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-28 18:06:12,342 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-28 18:06:12,343 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-28 18:06:12,366 INFO L321 Elim1Store]: treesize reduction 75, result has 11.8 percent of original size [2023-08-28 18:06:12,367 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 9 select indices, 9 select index equivalence classes, 26 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 10 case distinctions, treesize of input 74 treesize of output 37 [2023-08-28 18:06:12,566 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-28 18:06:12,566 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-28 18:06:12,624 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-28 18:06:12,625 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 124 treesize of output 54 [2023-08-28 18:06:12,769 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 124 treesize of output 54 [2023-08-28 18:06:15,030 WARN L839 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_1117 (Array Int Int)) (|aux_div_v_thr1Thread2of2ForFork0_~offset~0#1_58_49| Int)) (let ((.cse1 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t~0#1.base| v_ArrVal_1117) |c_~#storage~0.base|)) (.cse2 (* |aux_div_v_thr1Thread2of2ForFork0_~offset~0#1_58_49| 8))) (let ((.cse0 (select .cse1 (+ .cse2 |c_~#storage~0.offset|)))) (or (< 0 (+ 2147483649 .cse0)) (<= 3 |aux_div_v_thr1Thread2of2ForFork0_~offset~0#1_58_49|) (< |aux_div_v_thr1Thread2of2ForFork0_~offset~0#1_58_49| 0) (< .cse0 (select .cse1 (+ .cse2 4 |c_~#storage~0.offset|))))))) (forall ((|aux_div_v_thr1Thread1of2ForFork0_~offset~0#1_55_49| Int) (v_ArrVal_1117 (Array Int Int))) (or (<= 3 |aux_div_v_thr1Thread1of2ForFork0_~offset~0#1_55_49|) (< |aux_div_v_thr1Thread1of2ForFork0_~offset~0#1_55_49| 0) (forall ((|aux_div_v_thr1Thread2of2ForFork0_~offset~0#1_58_49| Int)) (let ((.cse3 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t~0#1.base| v_ArrVal_1117) |c_~#storage~0.base|)) (.cse5 (* |aux_div_v_thr1Thread2of2ForFork0_~offset~0#1_58_49| 8))) (let ((.cse4 (select .cse3 (+ .cse5 4 |c_~#storage~0.offset|)))) (or (<= 3 |aux_div_v_thr1Thread2of2ForFork0_~offset~0#1_58_49|) (<= (select .cse3 (+ (* |aux_div_v_thr1Thread1of2ForFork0_~offset~0#1_55_49| 8) 4 |c_~#storage~0.offset|)) .cse4) (< |aux_div_v_thr1Thread2of2ForFork0_~offset~0#1_58_49| 0) (<= .cse4 (select .cse3 (+ .cse5 |c_~#storage~0.offset|))))))))) (forall ((|aux_div_v_thr1Thread1of2ForFork0_~offset~0#1_55_49| Int) (v_ArrVal_1117 (Array Int Int))) (or (<= 3 |aux_div_v_thr1Thread1of2ForFork0_~offset~0#1_55_49|) (< |aux_div_v_thr1Thread1of2ForFork0_~offset~0#1_55_49| 0) (forall ((|aux_div_v_thr1Thread2of2ForFork0_~offset~0#1_58_49| Int)) (let ((.cse6 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t~0#1.base| v_ArrVal_1117) |c_~#storage~0.base|)) (.cse8 (* |aux_div_v_thr1Thread2of2ForFork0_~offset~0#1_58_49| 8))) (let ((.cse7 (select .cse6 (+ .cse8 |c_~#storage~0.offset|)))) (or (<= (select .cse6 (+ (* |aux_div_v_thr1Thread1of2ForFork0_~offset~0#1_55_49| 8) |c_~#storage~0.offset|)) .cse7) (<= 3 |aux_div_v_thr1Thread2of2ForFork0_~offset~0#1_58_49|) (< |aux_div_v_thr1Thread2of2ForFork0_~offset~0#1_58_49| 0) (< .cse7 (select .cse6 (+ .cse8 4 |c_~#storage~0.offset|))))))))) (forall ((|aux_div_v_thr1Thread1of2ForFork0_~offset~0#1_55_49| Int) (v_ArrVal_1117 (Array Int Int))) (or (<= 3 |aux_div_v_thr1Thread1of2ForFork0_~offset~0#1_55_49|) (forall ((|aux_div_v_thr1Thread2of2ForFork0_~offset~0#1_58_49| Int)) (let ((.cse9 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t~0#1.base| v_ArrVal_1117) |c_~#storage~0.base|)) (.cse11 (* |aux_div_v_thr1Thread2of2ForFork0_~offset~0#1_58_49| 8))) (let ((.cse10 (select .cse9 (+ .cse11 4 |c_~#storage~0.offset|)))) (or (<= (select .cse9 (+ (* |aux_div_v_thr1Thread1of2ForFork0_~offset~0#1_55_49| 8) |c_~#storage~0.offset|)) .cse10) (<= 3 |aux_div_v_thr1Thread2of2ForFork0_~offset~0#1_58_49|) (< |aux_div_v_thr1Thread2of2ForFork0_~offset~0#1_58_49| 0) (<= .cse10 (select .cse9 (+ .cse11 |c_~#storage~0.offset|))))))) (< |aux_div_v_thr1Thread1of2ForFork0_~offset~0#1_55_49| 0))) (forall ((v_ArrVal_1117 (Array Int Int)) (|aux_div_v_thr1Thread2of2ForFork0_~offset~0#1_58_49| Int)) (let ((.cse13 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t~0#1.base| v_ArrVal_1117) |c_~#storage~0.base|)) (.cse14 (* |aux_div_v_thr1Thread2of2ForFork0_~offset~0#1_58_49| 8))) (let ((.cse12 (select .cse13 (+ .cse14 4 |c_~#storage~0.offset|)))) (or (<= 3 |aux_div_v_thr1Thread2of2ForFork0_~offset~0#1_58_49|) (< |aux_div_v_thr1Thread2of2ForFork0_~offset~0#1_58_49| 0) (< 0 (+ 2147483649 .cse12)) (<= .cse12 (select .cse13 (+ .cse14 |c_~#storage~0.offset|))))))) (forall ((|aux_div_v_thr1Thread1of2ForFork0_~offset~0#1_55_49| Int) (v_ArrVal_1117 (Array Int Int))) (or (<= 3 |aux_div_v_thr1Thread1of2ForFork0_~offset~0#1_55_49|) (forall ((|aux_div_v_thr1Thread2of2ForFork0_~offset~0#1_58_49| Int)) (let ((.cse15 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t~0#1.base| v_ArrVal_1117) |c_~#storage~0.base|)) (.cse17 (* |aux_div_v_thr1Thread2of2ForFork0_~offset~0#1_58_49| 8))) (let ((.cse16 (select .cse15 (+ .cse17 |c_~#storage~0.offset|)))) (or (<= (select .cse15 (+ (* |aux_div_v_thr1Thread1of2ForFork0_~offset~0#1_55_49| 8) 4 |c_~#storage~0.offset|)) .cse16) (<= 3 |aux_div_v_thr1Thread2of2ForFork0_~offset~0#1_58_49|) (< |aux_div_v_thr1Thread2of2ForFork0_~offset~0#1_58_49| 0) (< .cse16 (select .cse15 (+ .cse17 4 |c_~#storage~0.offset|))))))) (< |aux_div_v_thr1Thread1of2ForFork0_~offset~0#1_55_49| 0)))) is different from false [2023-08-28 18:06:15,432 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 1 not checked. [2023-08-28 18:06:15,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2143677308] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-28 18:06:15,433 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-28 18:06:15,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 38 [2023-08-28 18:06:15,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263618784] [2023-08-28 18:06:15,433 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-28 18:06:15,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2023-08-28 18:06:15,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-28 18:06:15,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2023-08-28 18:06:15,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=205, Invalid=1204, Unknown=1, NotChecked=72, Total=1482 [2023-08-28 18:06:15,877 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 296 [2023-08-28 18:06:15,878 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 704 places, 2030 transitions, 42662 flow. Second operand has 39 states, 39 states have (on average 71.84615384615384) internal successors, (2802), 39 states have internal predecessors, (2802), 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) [2023-08-28 18:06:15,879 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-28 18:06:15,879 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 296 [2023-08-28 18:06:15,879 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand Killed by 15