./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-data-race.prp --file ../../../trunk/examples/svcomp/goblint-regression/09-regions_20-arrayloop2_rc.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --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/goblint-regression/09-regions_20-arrayloop2_rc.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 8ffb6ed4cf93a465c15dff37fbdc82f2f1bfe68c16d8d908373acd9cd0f46e43 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-31 20:21:05,776 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-31 20:21:05,778 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-31 20:21:05,804 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-31 20:21:05,804 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-31 20:21:05,806 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-31 20:21:05,807 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-31 20:21:05,808 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-31 20:21:05,810 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-31 20:21:05,811 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-31 20:21:05,811 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-31 20:21:05,812 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-31 20:21:05,813 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-31 20:21:05,814 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-31 20:21:05,815 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-31 20:21:05,816 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-31 20:21:05,816 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-31 20:21:05,817 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-31 20:21:05,819 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-31 20:21:05,820 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-31 20:21:05,822 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-31 20:21:05,823 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-31 20:21:05,824 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-31 20:21:05,825 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-31 20:21:05,828 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-31 20:21:05,829 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-31 20:21:05,829 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-31 20:21:05,830 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-31 20:21:05,830 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-31 20:21:05,831 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-31 20:21:05,831 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-31 20:21:05,832 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-31 20:21:05,833 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-31 20:21:05,834 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-31 20:21:05,834 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-31 20:21:05,835 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-31 20:21:05,835 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-31 20:21:05,836 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-31 20:21:05,836 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-31 20:21:05,852 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-31 20:21:05,854 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-31 20:21:05,855 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf [2023-08-31 20:21:05,897 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-31 20:21:05,898 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-31 20:21:05,899 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-31 20:21:05,900 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-31 20:21:05,900 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-31 20:21:05,901 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-31 20:21:05,901 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-31 20:21:05,901 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-31 20:21:05,902 INFO L138 SettingsManager]: * Use SBE=true [2023-08-31 20:21:05,902 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-31 20:21:05,903 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-31 20:21:05,903 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-31 20:21:05,903 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-31 20:21:05,903 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-31 20:21:05,903 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-31 20:21:05,903 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-31 20:21:05,904 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-31 20:21:05,904 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-31 20:21:05,904 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-08-31 20:21:05,904 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-31 20:21:05,904 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-31 20:21:05,904 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-31 20:21:05,905 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-31 20:21:05,905 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-31 20:21:05,905 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-31 20:21:05,905 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-31 20:21:05,905 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-31 20:21:05,906 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-31 20:21:05,906 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-31 20:21:05,906 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-31 20:21:05,906 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-31 20:21:05,906 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-31 20:21:05,907 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-31 20:21:05,907 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-31 20:21:05,907 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-31 20:21:05,907 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-31 20:21:05,907 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-31 20:21:05,907 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8ffb6ed4cf93a465c15dff37fbdc82f2f1bfe68c16d8d908373acd9cd0f46e43 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-08-31 20:21:06,228 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-31 20:21:06,251 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-31 20:21:06,254 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-31 20:21:06,255 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-31 20:21:06,255 INFO L275 PluginConnector]: CDTParser initialized [2023-08-31 20:21:06,257 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/09-regions_20-arrayloop2_rc.i [2023-08-31 20:21:07,405 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-31 20:21:07,650 INFO L351 CDTParser]: Found 1 translation units. [2023-08-31 20:21:07,655 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/09-regions_20-arrayloop2_rc.i [2023-08-31 20:21:07,679 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b5c173555/a44382a52a944d4693372a0240aceb84/FLAGb10a3f26d [2023-08-31 20:21:07,699 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b5c173555/a44382a52a944d4693372a0240aceb84 [2023-08-31 20:21:07,701 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-31 20:21:07,702 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-31 20:21:07,703 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-31 20:21:07,703 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-31 20:21:07,706 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-31 20:21:07,706 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.08 08:21:07" (1/1) ... [2023-08-31 20:21:07,708 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@13055346 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:21:07, skipping insertion in model container [2023-08-31 20:21:07,708 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.08 08:21:07" (1/1) ... [2023-08-31 20:21:07,713 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-31 20:21:07,753 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-31 20:21:08,150 WARN L1562 CHandler]: Possible shadowing of function new [2023-08-31 20:21:08,153 WARN L1562 CHandler]: Possible shadowing of function new [2023-08-31 20:21:08,154 WARN L1562 CHandler]: Possible shadowing of function new [2023-08-31 20:21:08,157 WARN L1562 CHandler]: Possible shadowing of function new [2023-08-31 20:21:08,202 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-31 20:21:08,220 INFO L203 MainTranslator]: Completed pre-run [2023-08-31 20:21:08,244 WARN L1562 CHandler]: Possible shadowing of function new [2023-08-31 20:21:08,245 WARN L1562 CHandler]: Possible shadowing of function new [2023-08-31 20:21:08,246 WARN L1562 CHandler]: Possible shadowing of function new [2023-08-31 20:21:08,246 WARN L1562 CHandler]: Possible shadowing of function new [2023-08-31 20:21:08,256 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-31 20:21:08,319 INFO L208 MainTranslator]: Completed translation [2023-08-31 20:21:08,319 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:21:08 WrapperNode [2023-08-31 20:21:08,319 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-31 20:21:08,320 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-31 20:21:08,320 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-31 20:21:08,321 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-31 20:21:08,326 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:21:08" (1/1) ... [2023-08-31 20:21:08,361 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:21:08" (1/1) ... [2023-08-31 20:21:08,406 INFO L138 Inliner]: procedures = 272, calls = 38, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 271 [2023-08-31 20:21:08,407 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-31 20:21:08,408 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-31 20:21:08,408 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-31 20:21:08,409 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-31 20:21:08,416 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:21:08" (1/1) ... [2023-08-31 20:21:08,417 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:21:08" (1/1) ... [2023-08-31 20:21:08,434 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:21:08" (1/1) ... [2023-08-31 20:21:08,437 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:21:08" (1/1) ... [2023-08-31 20:21:08,468 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:21:08" (1/1) ... [2023-08-31 20:21:08,478 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:21:08" (1/1) ... [2023-08-31 20:21:08,483 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:21:08" (1/1) ... [2023-08-31 20:21:08,489 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:21:08" (1/1) ... [2023-08-31 20:21:08,494 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-31 20:21:08,498 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-31 20:21:08,499 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-31 20:21:08,499 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-31 20:21:08,499 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:21:08" (1/1) ... [2023-08-31 20:21:08,504 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-31 20:21:08,514 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 20:21:08,533 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) [2023-08-31 20:21:08,551 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 [2023-08-31 20:21:08,575 INFO L130 BoogieDeclarations]: Found specification of procedure f [2023-08-31 20:21:08,575 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2023-08-31 20:21:08,575 INFO L130 BoogieDeclarations]: Found specification of procedure g [2023-08-31 20:21:08,576 INFO L138 BoogieDeclarations]: Found implementation of procedure g [2023-08-31 20:21:08,576 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-31 20:21:08,576 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-08-31 20:21:08,576 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-31 20:21:08,576 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-31 20:21:08,576 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-31 20:21:08,576 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-31 20:21:08,576 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-31 20:21:08,577 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-31 20:21:08,577 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-08-31 20:21:08,577 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-31 20:21:08,577 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-31 20:21:08,578 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-31 20:21:08,792 INFO L236 CfgBuilder]: Building ICFG [2023-08-31 20:21:08,794 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-31 20:21:09,268 INFO L277 CfgBuilder]: Performing block encoding [2023-08-31 20:21:09,277 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-31 20:21:09,277 INFO L302 CfgBuilder]: Removed 6 assume(true) statements. [2023-08-31 20:21:09,279 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 08:21:09 BoogieIcfgContainer [2023-08-31 20:21:09,279 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-31 20:21:09,281 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-31 20:21:09,281 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-31 20:21:09,283 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-31 20:21:09,284 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.08 08:21:07" (1/3) ... [2023-08-31 20:21:09,284 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36213dbe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.08 08:21:09, skipping insertion in model container [2023-08-31 20:21:09,284 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:21:08" (2/3) ... [2023-08-31 20:21:09,285 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36213dbe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.08 08:21:09, skipping insertion in model container [2023-08-31 20:21:09,285 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 08:21:09" (3/3) ... [2023-08-31 20:21:09,286 INFO L112 eAbstractionObserver]: Analyzing ICFG 09-regions_20-arrayloop2_rc.i [2023-08-31 20:21:09,295 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-31 20:21:09,303 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-31 20:21:09,304 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 18 error locations. [2023-08-31 20:21:09,304 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-31 20:21:09,433 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 20:21:09,491 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 284 places, 291 transitions, 592 flow [2023-08-31 20:21:09,653 INFO L130 PetriNetUnfolder]: 14/289 cut-off events. [2023-08-31 20:21:09,654 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-31 20:21:09,662 INFO L83 FinitePrefix]: Finished finitePrefix Result has 296 conditions, 289 events. 14/289 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 576 event pairs, 0 based on Foata normal form. 0/257 useless extension candidates. Maximal degree in co-relation 214. Up to 2 conditions per place. [2023-08-31 20:21:09,662 INFO L82 GeneralOperation]: Start removeDead. Operand has 284 places, 291 transitions, 592 flow [2023-08-31 20:21:09,673 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 282 places, 289 transitions, 584 flow [2023-08-31 20:21:09,677 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 20:21:09,691 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 282 places, 289 transitions, 584 flow [2023-08-31 20:21:09,694 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 282 places, 289 transitions, 584 flow [2023-08-31 20:21:09,696 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 282 places, 289 transitions, 584 flow [2023-08-31 20:21:09,767 INFO L130 PetriNetUnfolder]: 14/289 cut-off events. [2023-08-31 20:21:09,767 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-31 20:21:09,772 INFO L83 FinitePrefix]: Finished finitePrefix Result has 296 conditions, 289 events. 14/289 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 579 event pairs, 0 based on Foata normal form. 0/257 useless extension candidates. Maximal degree in co-relation 214. Up to 2 conditions per place. [2023-08-31 20:21:09,778 INFO L119 LiptonReduction]: Number of co-enabled transitions 12194 [2023-08-31 20:21:38,718 WARN L222 SmtUtils]: Spent 5.94s on a formula simplification that was a NOOP. DAG size: 152 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-31 20:21:48,933 WARN L222 SmtUtils]: Spent 5.38s on a formula simplification that was a NOOP. DAG size: 152 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-31 20:22:02,584 WARN L222 SmtUtils]: Spent 12.88s on a formula simplification that was a NOOP. DAG size: 144 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-31 20:22:10,694 WARN L222 SmtUtils]: Spent 8.11s on a formula simplification that was a NOOP. DAG size: 132 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-31 20:22:22,060 WARN L222 SmtUtils]: Spent 11.36s on a formula simplification that was a NOOP. DAG size: 144 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-31 20:22:29,946 WARN L222 SmtUtils]: Spent 7.89s on a formula simplification that was a NOOP. DAG size: 132 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-31 20:24:05,961 WARN L222 SmtUtils]: Spent 1.60m on a formula simplification that was a NOOP. DAG size: 262 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-31 20:25:44,284 WARN L222 SmtUtils]: Spent 1.64m on a formula simplification that was a NOOP. DAG size: 252 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-31 20:27:56,050 WARN L222 SmtUtils]: Spent 2.20m on a formula simplification that was a NOOP. DAG size: 262 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-31 20:30:11,113 WARN L222 SmtUtils]: Spent 2.25m on a formula simplification that was a NOOP. DAG size: 252 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-31 20:30:11,140 INFO L134 LiptonReduction]: Checked pairs total: 46673 [2023-08-31 20:30:11,140 INFO L136 LiptonReduction]: Total number of compositions: 262 [2023-08-31 20:30:11,152 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-31 20:30:11,156 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;@7d7b18fe, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 20:30:11,156 INFO L358 AbstractCegarLoop]: Starting to check reachability of 28 error locations. [2023-08-31 20:30:11,158 INFO L130 PetriNetUnfolder]: 0/2 cut-off events. [2023-08-31 20:30:11,158 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-31 20:30:11,158 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:30:11,159 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-31 20:30:11,159 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2023-08-31 20:30:11,163 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:30:11,163 INFO L85 PathProgramCache]: Analyzing trace with hash 33274, now seen corresponding path program 1 times [2023-08-31 20:30:11,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:30:11,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611936751] [2023-08-31 20:30:11,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:30:11,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:30:11,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 20:30:11,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 20:30:11,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 20:30:11,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611936751] [2023-08-31 20:30:11,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1611936751] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 20:30:11,297 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 20:30:11,298 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-31 20:30:11,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403466539] [2023-08-31 20:30:11,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 20:30:11,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-31 20:30:11,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 20:30:11,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-31 20:30:11,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-31 20:30:11,330 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 281 out of 553 [2023-08-31 20:30:11,333 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 83 transitions, 172 flow. Second operand has 2 states, 2 states have (on average 282.0) internal successors, (564), 2 states have internal predecessors, (564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 20:30:11,334 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 20:30:11,334 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 281 of 553 [2023-08-31 20:30:11,335 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 20:30:13,391 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-08-31 20:30:13,603 INFO L130 PetriNetUnfolder]: 399/1300 cut-off events. [2023-08-31 20:30:13,604 INFO L131 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2023-08-31 20:30:13,606 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1972 conditions, 1300 events. 399/1300 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 8072 event pairs, 309 based on Foata normal form. 0/1178 useless extension candidates. Maximal degree in co-relation 1954. Up to 645 conditions per place. [2023-08-31 20:30:13,610 INFO L137 encePairwiseOnDemand]: 543/553 looper letters, 32 selfloop transitions, 0 changer transitions 0/73 dead transitions. [2023-08-31 20:30:13,611 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 73 transitions, 216 flow [2023-08-31 20:30:13,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-31 20:30:13,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-31 20:30:13,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 604 transitions. [2023-08-31 20:30:13,625 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.546112115732369 [2023-08-31 20:30:13,625 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 604 transitions. [2023-08-31 20:30:13,626 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 604 transitions. [2023-08-31 20:30:13,628 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 20:30:13,630 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 604 transitions. [2023-08-31 20:30:13,634 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 302.0) internal successors, (604), 2 states have internal predecessors, (604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 20:30:13,640 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 553.0) internal successors, (1659), 3 states have internal predecessors, (1659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 20:30:13,641 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 553.0) internal successors, (1659), 3 states have internal predecessors, (1659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 20:30:13,642 INFO L175 Difference]: Start difference. First operand has 84 places, 83 transitions, 172 flow. Second operand 2 states and 604 transitions. [2023-08-31 20:30:13,643 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 73 transitions, 216 flow [2023-08-31 20:30:13,645 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 73 transitions, 214 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-31 20:30:13,647 INFO L231 Difference]: Finished difference. Result has 73 places, 73 transitions, 150 flow [2023-08-31 20:30:13,649 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=553, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=150, PETRI_PLACES=73, PETRI_TRANSITIONS=73} [2023-08-31 20:30:13,652 INFO L281 CegarLoopForPetriNet]: 84 programPoint places, -11 predicate places. [2023-08-31 20:30:13,652 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 73 transitions, 150 flow [2023-08-31 20:30:13,653 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 282.0) internal successors, (564), 2 states have internal predecessors, (564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 20:30:13,653 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:30:13,653 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 20:30:13,653 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-31 20:30:13,654 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting fErr0ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2023-08-31 20:30:13,654 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:30:13,654 INFO L85 PathProgramCache]: Analyzing trace with hash 146942558, now seen corresponding path program 1 times [2023-08-31 20:30:13,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:30:13,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002734956] [2023-08-31 20:30:13,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:30:13,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:30:13,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 20:30:13,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 20:30:13,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 20:30:13,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2002734956] [2023-08-31 20:30:13,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2002734956] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 20:30:13,783 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 20:30:13,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-31 20:30:13,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97995730] [2023-08-31 20:30:13,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 20:30:13,784 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-31 20:30:13,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 20:30:13,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-31 20:30:13,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-31 20:30:13,804 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 277 out of 553 [2023-08-31 20:30:13,806 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 73 transitions, 150 flow. Second operand has 3 states, 3 states have (on average 279.0) internal successors, (837), 3 states have internal predecessors, (837), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 20:30:13,806 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 20:30:13,806 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 277 of 553 [2023-08-31 20:30:13,806 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 20:30:15,847 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-08-31 20:30:17,652 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.74s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-08-31 20:30:19,378 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.72s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-08-31 20:30:19,579 INFO L130 PetriNetUnfolder]: 400/1303 cut-off events. [2023-08-31 20:30:19,579 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-31 20:30:19,581 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1977 conditions, 1303 events. 400/1303 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 8064 event pairs, 309 based on Foata normal form. 0/1180 useless extension candidates. Maximal degree in co-relation 1974. Up to 645 conditions per place. [2023-08-31 20:30:19,586 INFO L137 encePairwiseOnDemand]: 550/553 looper letters, 33 selfloop transitions, 2 changer transitions 0/76 dead transitions. [2023-08-31 20:30:19,586 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 76 transitions, 226 flow [2023-08-31 20:30:19,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-31 20:30:19,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-31 20:30:19,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 867 transitions. [2023-08-31 20:30:19,591 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5226039783001808 [2023-08-31 20:30:19,591 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 867 transitions. [2023-08-31 20:30:19,591 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 867 transitions. [2023-08-31 20:30:19,592 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 20:30:19,592 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 867 transitions. [2023-08-31 20:30:19,594 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 289.0) internal successors, (867), 3 states have internal predecessors, (867), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 20:30:19,598 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 553.0) internal successors, (2212), 4 states have internal predecessors, (2212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 20:30:19,600 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 553.0) internal successors, (2212), 4 states have internal predecessors, (2212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 20:30:19,600 INFO L175 Difference]: Start difference. First operand has 73 places, 73 transitions, 150 flow. Second operand 3 states and 867 transitions. [2023-08-31 20:30:19,600 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 76 transitions, 226 flow [2023-08-31 20:30:19,601 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 76 transitions, 226 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-31 20:30:19,603 INFO L231 Difference]: Finished difference. Result has 76 places, 74 transitions, 162 flow [2023-08-31 20:30:19,603 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=553, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=162, PETRI_PLACES=76, PETRI_TRANSITIONS=74} [2023-08-31 20:30:19,604 INFO L281 CegarLoopForPetriNet]: 84 programPoint places, -8 predicate places. [2023-08-31 20:30:19,604 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 74 transitions, 162 flow [2023-08-31 20:30:19,605 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 279.0) internal successors, (837), 3 states have internal predecessors, (837), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 20:30:19,605 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:30:19,605 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 20:30:19,605 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-31 20:30:19,606 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting fErr0ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2023-08-31 20:30:19,609 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:30:19,609 INFO L85 PathProgramCache]: Analyzing trace with hash -1708587882, now seen corresponding path program 1 times [2023-08-31 20:30:19,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:30:19,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052323040] [2023-08-31 20:30:19,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:30:19,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:30:19,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 20:30:19,711 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 20:30:19,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 20:30:19,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052323040] [2023-08-31 20:30:19,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2052323040] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 20:30:19,712 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 20:30:19,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-31 20:30:19,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449099424] [2023-08-31 20:30:19,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 20:30:19,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-31 20:30:19,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 20:30:19,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-31 20:30:19,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-31 20:30:19,723 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 277 out of 553 [2023-08-31 20:30:19,725 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 74 transitions, 162 flow. Second operand has 3 states, 3 states have (on average 279.6666666666667) internal successors, (839), 3 states have internal predecessors, (839), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 20:30:19,725 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 20:30:19,725 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 277 of 553 [2023-08-31 20:30:19,725 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 20:30:21,662 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.91s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-08-31 20:30:23,607 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.94s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-08-31 20:30:23,787 INFO L130 PetriNetUnfolder]: 400/1305 cut-off events. [2023-08-31 20:30:23,788 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-31 20:30:23,790 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1988 conditions, 1305 events. 400/1305 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 8093 event pairs, 309 based on Foata normal form. 2/1187 useless extension candidates. Maximal degree in co-relation 1983. Up to 648 conditions per place. [2023-08-31 20:30:23,794 INFO L137 encePairwiseOnDemand]: 550/553 looper letters, 32 selfloop transitions, 2 changer transitions 0/75 dead transitions. [2023-08-31 20:30:23,795 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 75 transitions, 232 flow [2023-08-31 20:30:23,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-31 20:30:23,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-31 20:30:23,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 865 transitions. [2023-08-31 20:30:23,798 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5213984327908379 [2023-08-31 20:30:23,806 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 865 transitions. [2023-08-31 20:30:23,806 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 865 transitions. [2023-08-31 20:30:23,807 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 20:30:23,807 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 865 transitions. [2023-08-31 20:30:23,809 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 288.3333333333333) internal successors, (865), 3 states have internal predecessors, (865), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 20:30:23,812 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 553.0) internal successors, (2212), 4 states have internal predecessors, (2212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 20:30:23,813 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 553.0) internal successors, (2212), 4 states have internal predecessors, (2212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 20:30:23,813 INFO L175 Difference]: Start difference. First operand has 76 places, 74 transitions, 162 flow. Second operand 3 states and 865 transitions. [2023-08-31 20:30:23,813 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 75 transitions, 232 flow [2023-08-31 20:30:23,814 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 75 transitions, 230 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-31 20:30:23,815 INFO L231 Difference]: Finished difference. Result has 78 places, 75 transitions, 174 flow [2023-08-31 20:30:23,816 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=553, PETRI_DIFFERENCE_MINUEND_FLOW=160, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=174, PETRI_PLACES=78, PETRI_TRANSITIONS=75} [2023-08-31 20:30:23,818 INFO L281 CegarLoopForPetriNet]: 84 programPoint places, -6 predicate places. [2023-08-31 20:30:23,818 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 75 transitions, 174 flow [2023-08-31 20:30:23,819 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 279.6666666666667) internal successors, (839), 3 states have internal predecessors, (839), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 20:30:23,819 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:30:23,819 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 20:30:23,819 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-31 20:30:23,819 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting fErr0ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2023-08-31 20:30:23,822 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:30:23,823 INFO L85 PathProgramCache]: Analyzing trace with hash 509153872, now seen corresponding path program 1 times [2023-08-31 20:30:23,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:30:23,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1920701007] [2023-08-31 20:30:23,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:30:23,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:30:23,921 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-31 20:30:23,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1936941065] [2023-08-31 20:30:23,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:30:23,924 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 20:30:23,927 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 20:30:23,933 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) [2023-08-31 20:30:23,941 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-31 20:30:24,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 20:30:24,245 INFO L263 TraceCheckSpWp]: Trace formula consists of 1111 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-31 20:30:24,249 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 20:30:24,277 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 20:30:24,277 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-31 20:30:24,296 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 20:30:24,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 20:30:24,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1920701007] [2023-08-31 20:30:24,297 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-31 20:30:24,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1936941065] [2023-08-31 20:30:24,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1936941065] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-31 20:30:24,297 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-31 20:30:24,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2023-08-31 20:30:24,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278096224] [2023-08-31 20:30:24,298 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-31 20:30:24,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-31 20:30:24,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 20:30:24,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-31 20:30:24,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-31 20:30:24,330 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 276 out of 553 [2023-08-31 20:30:24,332 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 75 transitions, 174 flow. Second operand has 6 states, 6 states have (on average 278.0) internal successors, (1668), 6 states have internal predecessors, (1668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 20:30:24,333 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 20:30:24,333 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 276 of 553 [2023-08-31 20:30:24,333 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 20:30:25,982 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.61s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-08-31 20:30:27,146 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-08-31 20:30:29,155 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-08-31 20:30:30,832 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.67s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-08-31 20:30:32,360 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.53s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-08-31 20:30:33,489 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-08-31 20:30:33,707 INFO L130 PetriNetUnfolder]: 400/1311 cut-off events. [2023-08-31 20:30:33,708 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-31 20:30:33,710 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2016 conditions, 1311 events. 400/1311 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 8078 event pairs, 309 based on Foata normal form. 6/1197 useless extension candidates. Maximal degree in co-relation 2010. Up to 648 conditions per place. [2023-08-31 20:30:33,715 INFO L137 encePairwiseOnDemand]: 550/553 looper letters, 32 selfloop transitions, 5 changer transitions 0/78 dead transitions. [2023-08-31 20:30:33,716 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 78 transitions, 260 flow [2023-08-31 20:30:33,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-31 20:30:33,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-31 20:30:33,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1695 transitions. [2023-08-31 20:30:33,720 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5108499095840868 [2023-08-31 20:30:33,721 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1695 transitions. [2023-08-31 20:30:33,721 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1695 transitions. [2023-08-31 20:30:33,722 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 20:30:33,722 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1695 transitions. [2023-08-31 20:30:33,726 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 282.5) internal successors, (1695), 6 states have internal predecessors, (1695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 20:30:33,731 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 553.0) internal successors, (3871), 7 states have internal predecessors, (3871), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 20:30:33,733 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 553.0) internal successors, (3871), 7 states have internal predecessors, (3871), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 20:30:33,733 INFO L175 Difference]: Start difference. First operand has 78 places, 75 transitions, 174 flow. Second operand 6 states and 1695 transitions. [2023-08-31 20:30:33,733 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 78 transitions, 260 flow [2023-08-31 20:30:33,734 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 78 transitions, 256 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-31 20:30:33,736 INFO L231 Difference]: Finished difference. Result has 85 places, 78 transitions, 212 flow [2023-08-31 20:30:33,736 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=553, PETRI_DIFFERENCE_MINUEND_FLOW=170, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=212, PETRI_PLACES=85, PETRI_TRANSITIONS=78} [2023-08-31 20:30:33,737 INFO L281 CegarLoopForPetriNet]: 84 programPoint places, 1 predicate places. [2023-08-31 20:30:33,737 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 78 transitions, 212 flow [2023-08-31 20:30:33,738 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 278.0) internal successors, (1668), 6 states have internal predecessors, (1668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 20:30:33,738 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:30:33,739 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 20:30:33,748 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-08-31 20:30:33,946 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 20:30:33,946 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting fErr0ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2023-08-31 20:30:33,947 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:30:33,947 INFO L85 PathProgramCache]: Analyzing trace with hash 748397334, now seen corresponding path program 2 times [2023-08-31 20:30:33,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:30:33,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943809084] [2023-08-31 20:30:33,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:30:33,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:30:34,148 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-31 20:30:34,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [986035748] [2023-08-31 20:30:34,149 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-31 20:30:34,149 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 20:30:34,149 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 20:30:34,151 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) [2023-08-31 20:30:34,188 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-31 20:30:34,701 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-31 20:30:34,702 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-31 20:30:34,705 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 17 conjunts are in the unsatisfiable core [2023-08-31 20:30:34,708 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 20:30:34,734 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2023-08-31 20:30:34,751 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 28 treesize of output 27 [2023-08-31 20:30:34,774 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 20:30:34,774 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 40 treesize of output 42 [2023-08-31 20:30:34,804 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 20:30:34,804 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 52 treesize of output 57 [2023-08-31 20:30:34,829 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-08-31 20:30:34,829 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-31 20:30:34,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 20:30:34,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [943809084] [2023-08-31 20:30:34,830 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-31 20:30:34,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [986035748] [2023-08-31 20:30:34,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [986035748] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 20:30:34,830 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 20:30:34,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-31 20:30:34,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134093354] [2023-08-31 20:30:34,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 20:30:34,831 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-31 20:30:34,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 20:30:34,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-31 20:30:34,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-31 20:30:35,522 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 228 out of 553 [2023-08-31 20:30:35,523 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 78 transitions, 212 flow. Second operand has 6 states, 6 states have (on average 230.33333333333334) internal successors, (1382), 6 states have internal predecessors, (1382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 20:30:35,524 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 20:30:35,524 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 228 of 553 [2023-08-31 20:30:35,524 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 20:30:36,948 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.31s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-08-31 20:30:38,262 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.31s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-08-31 20:30:40,515 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.42s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-08-31 20:30:41,097 INFO L130 PetriNetUnfolder]: 1235/2922 cut-off events. [2023-08-31 20:30:41,097 INFO L131 PetriNetUnfolder]: For 9/9 co-relation queries the response was YES. [2023-08-31 20:30:41,102 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5023 conditions, 2922 events. 1235/2922 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 18333 event pairs, 612 based on Foata normal form. 0/2628 useless extension candidates. Maximal degree in co-relation 5014. Up to 1507 conditions per place. [2023-08-31 20:30:41,110 INFO L137 encePairwiseOnDemand]: 541/553 looper letters, 106 selfloop transitions, 23 changer transitions 0/158 dead transitions. [2023-08-31 20:30:41,110 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 158 transitions, 638 flow [2023-08-31 20:30:41,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-31 20:30:41,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-31 20:30:41,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1493 transitions. [2023-08-31 20:30:41,115 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4499698613622664 [2023-08-31 20:30:41,117 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1493 transitions. [2023-08-31 20:30:41,117 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1493 transitions. [2023-08-31 20:30:41,118 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 20:30:41,118 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1493 transitions. [2023-08-31 20:30:41,122 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 248.83333333333334) internal successors, (1493), 6 states have internal predecessors, (1493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 20:30:41,127 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 553.0) internal successors, (3871), 7 states have internal predecessors, (3871), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 20:30:41,130 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 553.0) internal successors, (3871), 7 states have internal predecessors, (3871), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 20:30:41,130 INFO L175 Difference]: Start difference. First operand has 85 places, 78 transitions, 212 flow. Second operand 6 states and 1493 transitions. [2023-08-31 20:30:41,131 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 158 transitions, 638 flow [2023-08-31 20:30:41,133 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 158 transitions, 624 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-08-31 20:30:41,135 INFO L231 Difference]: Finished difference. Result has 94 places, 100 transitions, 356 flow [2023-08-31 20:30:41,137 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=553, PETRI_DIFFERENCE_MINUEND_FLOW=198, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=356, PETRI_PLACES=94, PETRI_TRANSITIONS=100} [2023-08-31 20:30:41,139 INFO L281 CegarLoopForPetriNet]: 84 programPoint places, 10 predicate places. [2023-08-31 20:30:41,139 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 100 transitions, 356 flow [2023-08-31 20:30:41,140 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 230.33333333333334) internal successors, (1382), 6 states have internal predecessors, (1382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 20:30:41,141 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:30:41,141 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 20:30:41,149 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-08-31 20:30:41,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 20:30:41,347 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting gErr0ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2023-08-31 20:30:41,347 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:30:41,347 INFO L85 PathProgramCache]: Analyzing trace with hash 1954051366, now seen corresponding path program 1 times [2023-08-31 20:30:41,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:30:41,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509757706] [2023-08-31 20:30:41,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:30:41,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:30:41,557 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-31 20:30:41,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [193905749] [2023-08-31 20:30:41,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:30:41,558 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 20:30:41,558 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 20:30:41,561 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) [2023-08-31 20:30:41,564 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-31 20:30:42,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 20:30:42,872 INFO L263 TraceCheckSpWp]: Trace formula consists of 3966 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-31 20:30:42,876 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 20:30:42,911 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 20:30:42,911 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-31 20:30:42,968 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 20:30:42,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 20:30:42,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [509757706] [2023-08-31 20:30:42,969 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-31 20:30:42,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [193905749] [2023-08-31 20:30:42,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [193905749] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-31 20:30:42,969 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-31 20:30:42,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2023-08-31 20:30:42,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014435527] [2023-08-31 20:30:42,970 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-31 20:30:42,970 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-31 20:30:42,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 20:30:42,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-31 20:30:42,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2023-08-31 20:30:43,005 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 276 out of 553 [2023-08-31 20:30:43,008 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 100 transitions, 356 flow. Second operand has 12 states, 12 states have (on average 277.6666666666667) internal successors, (3332), 12 states have internal predecessors, (3332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 20:30:43,008 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 20:30:43,008 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 276 of 553 [2023-08-31 20:30:43,008 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 20:30:44,763 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.72s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-08-31 20:30:46,185 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.42s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-08-31 20:30:47,467 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.28s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-08-31 20:30:50,316 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.32s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-08-31 20:30:52,038 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.71s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-08-31 20:30:53,642 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.60s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-08-31 20:30:54,704 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-08-31 20:30:56,034 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-08-31 20:30:58,043 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-08-31 20:30:59,713 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.67s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-08-31 20:31:00,064 INFO L130 PetriNetUnfolder]: 711/2204 cut-off events. [2023-08-31 20:31:00,065 INFO L131 PetriNetUnfolder]: For 369/399 co-relation queries the response was YES. [2023-08-31 20:31:00,083 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3972 conditions, 2204 events. 711/2204 cut-off events. For 369/399 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 15266 event pairs, 458 based on Foata normal form. 20/2062 useless extension candidates. Maximal degree in co-relation 3958. Up to 1061 conditions per place. [2023-08-31 20:31:00,090 INFO L137 encePairwiseOnDemand]: 550/553 looper letters, 35 selfloop transitions, 11 changer transitions 0/106 dead transitions. [2023-08-31 20:31:00,090 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 106 transitions, 484 flow [2023-08-31 20:31:00,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-31 20:31:00,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-31 20:31:00,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 3360 transitions. [2023-08-31 20:31:00,099 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5063291139240507 [2023-08-31 20:31:00,099 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 3360 transitions. [2023-08-31 20:31:00,099 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 3360 transitions. [2023-08-31 20:31:00,101 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 20:31:00,101 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 3360 transitions. [2023-08-31 20:31:00,109 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 280.0) internal successors, (3360), 12 states have internal predecessors, (3360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 20:31:00,118 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 553.0) internal successors, (7189), 13 states have internal predecessors, (7189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 20:31:00,120 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 553.0) internal successors, (7189), 13 states have internal predecessors, (7189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 20:31:00,120 INFO L175 Difference]: Start difference. First operand has 94 places, 100 transitions, 356 flow. Second operand 12 states and 3360 transitions. [2023-08-31 20:31:00,120 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 106 transitions, 484 flow [2023-08-31 20:31:00,125 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 106 transitions, 484 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-31 20:31:00,127 INFO L231 Difference]: Finished difference. Result has 111 places, 106 transitions, 452 flow [2023-08-31 20:31:00,128 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=553, PETRI_DIFFERENCE_MINUEND_FLOW=356, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=452, PETRI_PLACES=111, PETRI_TRANSITIONS=106} [2023-08-31 20:31:00,130 INFO L281 CegarLoopForPetriNet]: 84 programPoint places, 27 predicate places. [2023-08-31 20:31:00,130 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 106 transitions, 452 flow [2023-08-31 20:31:00,131 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 277.6666666666667) internal successors, (3332), 12 states have internal predecessors, (3332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 20:31:00,131 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:31:00,132 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 20:31:00,146 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-31 20:31:00,345 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 20:31:00,346 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting gErr0ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2023-08-31 20:31:00,346 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:31:00,346 INFO L85 PathProgramCache]: Analyzing trace with hash -489694490, now seen corresponding path program 2 times [2023-08-31 20:31:00,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:31:00,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1857743574] [2023-08-31 20:31:00,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:31:00,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:31:00,770 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-31 20:31:00,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1482937689] [2023-08-31 20:31:00,771 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-31 20:31:00,771 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 20:31:00,771 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 20:31:00,772 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) [2023-08-31 20:31:00,787 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-31 20:31:02,164 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-31 20:31:02,164 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-31 20:31:02,170 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 17 conjunts are in the unsatisfiable core [2023-08-31 20:31:02,174 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 20:31:02,181 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2023-08-31 20:31:02,196 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 28 treesize of output 27 [2023-08-31 20:31:02,220 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 20:31:02,220 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 40 treesize of output 42 [2023-08-31 20:31:02,251 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 20:31:02,251 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 52 treesize of output 57 [2023-08-31 20:31:02,278 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-08-31 20:31:02,278 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-31 20:31:02,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 20:31:02,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1857743574] [2023-08-31 20:31:02,279 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-31 20:31:02,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1482937689] [2023-08-31 20:31:02,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1482937689] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 20:31:02,279 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 20:31:02,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-31 20:31:02,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318109588] [2023-08-31 20:31:02,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 20:31:02,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-31 20:31:02,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 20:31:02,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-31 20:31:02,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-31 20:31:02,995 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 228 out of 553 [2023-08-31 20:31:02,997 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 106 transitions, 452 flow. Second operand has 6 states, 6 states have (on average 230.66666666666666) internal successors, (1384), 6 states have internal predecessors, (1384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 20:31:02,997 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 20:31:02,997 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 228 of 553 [2023-08-31 20:31:02,997 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 20:31:04,448 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.37s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-08-31 20:31:06,456 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-08-31 20:31:08,082 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.63s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-08-31 20:31:09,807 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.72s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-08-31 20:31:10,696 INFO L130 PetriNetUnfolder]: 1786/4213 cut-off events. [2023-08-31 20:31:10,697 INFO L131 PetriNetUnfolder]: For 730/782 co-relation queries the response was YES. [2023-08-31 20:31:10,717 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8285 conditions, 4213 events. 1786/4213 cut-off events. For 730/782 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 29581 event pairs, 735 based on Foata normal form. 20/3927 useless extension candidates. Maximal degree in co-relation 8264. Up to 2122 conditions per place. [2023-08-31 20:31:10,731 INFO L137 encePairwiseOnDemand]: 541/553 looper letters, 132 selfloop transitions, 31 changer transitions 0/195 dead transitions. [2023-08-31 20:31:10,731 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 195 transitions, 1046 flow [2023-08-31 20:31:10,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-31 20:31:10,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-31 20:31:10,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1486 transitions. [2023-08-31 20:31:10,752 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4478601567209162 [2023-08-31 20:31:10,752 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1486 transitions. [2023-08-31 20:31:10,753 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1486 transitions. [2023-08-31 20:31:10,754 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 20:31:10,754 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1486 transitions. [2023-08-31 20:31:10,757 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 247.66666666666666) internal successors, (1486), 6 states have internal predecessors, (1486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 20:31:10,761 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 553.0) internal successors, (3871), 7 states have internal predecessors, (3871), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 20:31:10,763 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 553.0) internal successors, (3871), 7 states have internal predecessors, (3871), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 20:31:10,763 INFO L175 Difference]: Start difference. First operand has 111 places, 106 transitions, 452 flow. Second operand 6 states and 1486 transitions. [2023-08-31 20:31:10,763 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 195 transitions, 1046 flow [2023-08-31 20:31:10,768 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 195 transitions, 998 flow, removed 19 selfloop flow, removed 5 redundant places. [2023-08-31 20:31:10,770 INFO L231 Difference]: Finished difference. Result has 116 places, 136 transitions, 662 flow [2023-08-31 20:31:10,771 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=553, PETRI_DIFFERENCE_MINUEND_FLOW=404, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=662, PETRI_PLACES=116, PETRI_TRANSITIONS=136} [2023-08-31 20:31:10,771 INFO L281 CegarLoopForPetriNet]: 84 programPoint places, 32 predicate places. [2023-08-31 20:31:10,771 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 136 transitions, 662 flow [2023-08-31 20:31:10,772 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 230.66666666666666) internal successors, (1384), 6 states have internal predecessors, (1384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 20:31:10,772 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:31:10,772 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 20:31:10,785 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-31 20:31:10,981 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 20:31:10,981 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting fErr1ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2023-08-31 20:31:10,982 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:31:10,982 INFO L85 PathProgramCache]: Analyzing trace with hash 1008037599, now seen corresponding path program 1 times [2023-08-31 20:31:10,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:31:10,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [715222681] [2023-08-31 20:31:10,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:31:10,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:31:11,392 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-31 20:31:11,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [957820147] [2023-08-31 20:31:11,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:31:11,393 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 20:31:11,393 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 20:31:11,408 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) [2023-08-31 20:31:11,409 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-31 20:31:14,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 20:31:14,076 INFO L263 TraceCheckSpWp]: Trace formula consists of 9633 conjuncts, 12 conjunts are in the unsatisfiable core [2023-08-31 20:31:14,082 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 20:31:14,191 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 1 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 20:31:14,191 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-31 20:31:14,374 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 1 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 20:31:14,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 20:31:14,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [715222681] [2023-08-31 20:31:14,375 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-31 20:31:14,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [957820147] [2023-08-31 20:31:14,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [957820147] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-31 20:31:14,375 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-31 20:31:14,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2023-08-31 20:31:14,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032646988] [2023-08-31 20:31:14,375 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-31 20:31:14,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-08-31 20:31:14,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 20:31:14,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-08-31 20:31:14,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2023-08-31 20:31:14,482 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 276 out of 553 [2023-08-31 20:31:14,494 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 136 transitions, 662 flow. Second operand has 24 states, 24 states have (on average 277.3333333333333) internal successors, (6656), 24 states have internal predecessors, (6656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 20:31:14,500 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 20:31:14,500 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 276 of 553 [2023-08-31 20:31:14,501 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 20:31:16,150 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.60s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-08-31 20:31:17,798 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.65s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-08-31 20:31:19,572 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.77s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-08-31 20:31:21,584 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-08-31 20:31:23,056 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.47s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-08-31 20:31:25,063 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-08-31 20:31:27,072 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-08-31 20:31:28,858 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.79s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-08-31 20:31:31,406 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.55s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-08-31 20:31:33,418 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-08-31 20:31:34,695 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.28s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-08-31 20:31:35,720 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-08-31 20:31:37,227 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.51s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-08-31 20:31:40,176 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-08-31 20:31:41,547 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.37s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-08-31 20:31:43,069 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.52s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-08-31 20:31:44,077 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-08-31 20:31:45,662 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.58s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-08-31 20:31:47,181 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.52s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-08-31 20:31:48,261 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-08-31 20:31:50,269 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-08-31 20:31:52,149 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.88s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-08-31 20:31:54,159 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-08-31 20:31:56,169 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-08-31 20:31:58,177 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-08-31 20:32:00,183 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-08-31 20:32:02,173 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.99s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-08-31 20:32:02,753 INFO L130 PetriNetUnfolder]: 1165/3440 cut-off events. [2023-08-31 20:32:02,754 INFO L131 PetriNetUnfolder]: For 2303/2385 co-relation queries the response was YES. [2023-08-31 20:32:02,766 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7093 conditions, 3440 events. 1165/3440 cut-off events. For 2303/2385 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 26274 event pairs, 682 based on Foata normal form. 48/3312 useless extension candidates. Maximal degree in co-relation 7068. Up to 1687 conditions per place. [2023-08-31 20:32:02,782 INFO L137 encePairwiseOnDemand]: 550/553 looper letters, 45 selfloop transitions, 23 changer transitions 0/148 dead transitions. [2023-08-31 20:32:02,782 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 148 transitions, 870 flow [2023-08-31 20:32:02,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-08-31 20:32:02,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-08-31 20:32:02,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 6690 transitions. [2023-08-31 20:32:02,796 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5040687160940326 [2023-08-31 20:32:02,797 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 6690 transitions. [2023-08-31 20:32:02,797 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 6690 transitions. [2023-08-31 20:32:02,800 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 20:32:02,800 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 6690 transitions. [2023-08-31 20:32:02,812 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 278.75) internal successors, (6690), 24 states have internal predecessors, (6690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 20:32:02,858 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 553.0) internal successors, (13825), 25 states have internal predecessors, (13825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 20:32:02,860 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 553.0) internal successors, (13825), 25 states have internal predecessors, (13825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 20:32:02,860 INFO L175 Difference]: Start difference. First operand has 116 places, 136 transitions, 662 flow. Second operand 24 states and 6690 transitions. [2023-08-31 20:32:02,860 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 148 transitions, 870 flow [2023-08-31 20:32:02,866 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 148 transitions, 870 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-31 20:32:02,868 INFO L231 Difference]: Finished difference. Result has 151 places, 148 transitions, 854 flow [2023-08-31 20:32:02,869 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=553, PETRI_DIFFERENCE_MINUEND_FLOW=662, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=854, PETRI_PLACES=151, PETRI_TRANSITIONS=148} [2023-08-31 20:32:02,870 INFO L281 CegarLoopForPetriNet]: 84 programPoint places, 67 predicate places. [2023-08-31 20:32:02,871 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 148 transitions, 854 flow [2023-08-31 20:32:02,872 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 277.3333333333333) internal successors, (6656), 24 states have internal predecessors, (6656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 20:32:02,872 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:32:02,872 INFO L208 CegarLoopForPetriNet]: trace histogram [22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 20:32:02,907 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-31 20:32:03,102 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 20:32:03,102 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting fErr1ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2023-08-31 20:32:03,102 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:32:03,102 INFO L85 PathProgramCache]: Analyzing trace with hash 873237087, now seen corresponding path program 2 times [2023-08-31 20:32:03,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:32:03,103 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666826183] [2023-08-31 20:32:03,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:32:03,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:32:03,911 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-31 20:32:03,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1621316317] [2023-08-31 20:32:03,912 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-31 20:32:03,912 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 20:32:03,912 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 20:32:03,913 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) [2023-08-31 20:32:03,915 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-31 20:32:06,925 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-31 20:32:06,926 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-31 20:32:06,935 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 17 conjunts are in the unsatisfiable core [2023-08-31 20:32:06,942 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 20:32:06,948 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-31 20:32:06,957 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 21 treesize of output 20 [2023-08-31 20:32:06,975 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 20:32:06,975 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 30 treesize of output 32 [2023-08-31 20:32:07,045 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 20:32:07,045 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 44 [2023-08-31 20:32:07,070 INFO L134 CoverageAnalysis]: Checked inductivity of 254 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 254 trivial. 0 not checked. [2023-08-31 20:32:07,070 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-31 20:32:07,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 20:32:07,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666826183] [2023-08-31 20:32:07,071 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-31 20:32:07,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1621316317] [2023-08-31 20:32:07,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1621316317] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 20:32:07,071 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 20:32:07,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-31 20:32:07,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119233449] [2023-08-31 20:32:07,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 20:32:07,072 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-31 20:32:07,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 20:32:07,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-31 20:32:07,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-31 20:32:07,589 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 227 out of 553 [2023-08-31 20:32:07,590 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 148 transitions, 854 flow. Second operand has 6 states, 6 states have (on average 229.66666666666666) internal successors, (1378), 6 states have internal predecessors, (1378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 20:32:07,590 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 20:32:07,590 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 227 of 553 [2023-08-31 20:32:07,590 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 20:32:09,119 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.48s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-08-31 20:32:10,329 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-08-31 20:32:11,170 INFO L130 PetriNetUnfolder]: 2511/5418 cut-off events. [2023-08-31 20:32:11,170 INFO L131 PetriNetUnfolder]: For 2574/2680 co-relation queries the response was YES. [2023-08-31 20:32:11,191 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12450 conditions, 5418 events. 2511/5418 cut-off events. For 2574/2680 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 36754 event pairs, 968 based on Foata normal form. 40/5260 useless extension candidates. Maximal degree in co-relation 12412. Up to 2863 conditions per place. [2023-08-31 20:32:11,208 INFO L137 encePairwiseOnDemand]: 542/553 looper letters, 173 selfloop transitions, 55 changer transitions 0/262 dead transitions. [2023-08-31 20:32:11,209 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 262 transitions, 1790 flow [2023-08-31 20:32:11,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-31 20:32:11,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-31 20:32:11,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1486 transitions. [2023-08-31 20:32:11,213 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4478601567209162 [2023-08-31 20:32:11,213 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1486 transitions. [2023-08-31 20:32:11,213 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1486 transitions. [2023-08-31 20:32:11,214 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 20:32:11,214 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1486 transitions. [2023-08-31 20:32:11,217 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 247.66666666666666) internal successors, (1486), 6 states have internal predecessors, (1486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 20:32:11,221 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 553.0) internal successors, (3871), 7 states have internal predecessors, (3871), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 20:32:11,222 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 553.0) internal successors, (3871), 7 states have internal predecessors, (3871), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 20:32:11,222 INFO L175 Difference]: Start difference. First operand has 151 places, 148 transitions, 854 flow. Second operand 6 states and 1486 transitions. [2023-08-31 20:32:11,222 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 262 transitions, 1790 flow [2023-08-31 20:32:11,233 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 262 transitions, 1694 flow, removed 37 selfloop flow, removed 11 redundant places. [2023-08-31 20:32:11,236 INFO L231 Difference]: Finished difference. Result has 150 places, 197 transitions, 1312 flow [2023-08-31 20:32:11,237 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=553, PETRI_DIFFERENCE_MINUEND_FLOW=758, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1312, PETRI_PLACES=150, PETRI_TRANSITIONS=197} [2023-08-31 20:32:11,237 INFO L281 CegarLoopForPetriNet]: 84 programPoint places, 66 predicate places. [2023-08-31 20:32:11,237 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 197 transitions, 1312 flow [2023-08-31 20:32:11,238 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 229.66666666666666) internal successors, (1378), 6 states have internal predecessors, (1378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 20:32:11,238 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:32:11,238 INFO L208 CegarLoopForPetriNet]: trace histogram [22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 20:32:11,254 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-08-31 20:32:11,453 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 20:32:11,454 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting gErr1ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2023-08-31 20:32:11,454 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:32:11,454 INFO L85 PathProgramCache]: Analyzing trace with hash 1930825631, now seen corresponding path program 1 times [2023-08-31 20:32:11,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:32:11,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [884301135] [2023-08-31 20:32:11,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:32:11,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:32:12,154 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-31 20:32:12,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1624857497] [2023-08-31 20:32:12,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:32:12,155 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 20:32:12,155 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 20:32:12,156 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) [2023-08-31 20:32:12,158 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-31 20:32:18,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 20:32:18,364 INFO L263 TraceCheckSpWp]: Trace formula consists of 20975 conjuncts, 24 conjunts are in the unsatisfiable core [2023-08-31 20:32:18,374 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 20:32:18,677 INFO L134 CoverageAnalysis]: Checked inductivity of 254 backedges. 1 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 20:32:18,677 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-31 20:32:19,084 INFO L134 CoverageAnalysis]: Checked inductivity of 254 backedges. 1 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 20:32:19,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 20:32:19,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [884301135] [2023-08-31 20:32:19,084 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-31 20:32:19,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1624857497] [2023-08-31 20:32:19,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1624857497] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-31 20:32:19,085 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-31 20:32:19,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 32 [2023-08-31 20:32:19,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053953760] [2023-08-31 20:32:19,085 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-31 20:32:19,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-08-31 20:32:19,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 20:32:19,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-08-31 20:32:19,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2023-08-31 20:32:19,164 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 276 out of 553 [2023-08-31 20:32:19,169 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 197 transitions, 1312 flow. Second operand has 32 states, 32 states have (on average 277.34375) internal successors, (8875), 32 states have internal predecessors, (8875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 20:32:19,169 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 20:32:19,169 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 276 of 553 [2023-08-31 20:32:19,170 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 20:32:21,036 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.83s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-08-31 20:32:22,718 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.68s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-08-31 20:32:23,850 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-08-31 20:32:25,745 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-08-31 20:32:27,712 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.97s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-08-31 20:32:29,156 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.44s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-08-31 20:32:30,509 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.35s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-08-31 20:32:32,455 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.94s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-08-31 20:32:34,466 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-08-31 20:32:35,628 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-08-31 20:32:36,850 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-08-31 20:32:38,679 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.83s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-08-31 20:32:40,128 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.45s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-08-31 20:32:42,995 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.89s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-08-31 20:32:45,960 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-08-31 20:32:47,970 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-08-31 20:32:48,995 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-08-31 20:32:50,373 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.38s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-08-31 20:32:52,352 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.98s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-08-31 20:32:53,398 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-08-31 20:32:55,228 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.83s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-08-31 20:32:57,239 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-08-31 20:32:59,245 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-08-31 20:33:00,925 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.68s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-08-31 20:33:02,393 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.47s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-08-31 20:33:04,403 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-08-31 20:33:06,410 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-08-31 20:33:08,417 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-08-31 20:33:10,084 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.66s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-08-31 20:33:11,563 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.48s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-08-31 20:33:13,143 INFO L130 PetriNetUnfolder]: 1479/4182 cut-off events. [2023-08-31 20:33:13,144 INFO L131 PetriNetUnfolder]: For 7397/7497 co-relation queries the response was YES. [2023-08-31 20:33:13,160 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10190 conditions, 4182 events. 1479/4182 cut-off events. For 7397/7497 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 31960 event pairs, 790 based on Foata normal form. 40/4092 useless extension candidates. Maximal degree in co-relation 10148. Up to 2013 conditions per place. [2023-08-31 20:33:13,173 INFO L137 encePairwiseOnDemand]: 550/553 looper letters, 50 selfloop transitions, 31 changer transitions 0/205 dead transitions. [2023-08-31 20:33:13,174 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 205 transitions, 1522 flow [2023-08-31 20:33:13,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-08-31 20:33:13,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2023-08-31 20:33:13,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 8902 transitions. [2023-08-31 20:33:13,189 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5030515370705244 [2023-08-31 20:33:13,189 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 8902 transitions. [2023-08-31 20:33:13,189 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 8902 transitions. [2023-08-31 20:33:13,193 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 20:33:13,193 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 8902 transitions. [2023-08-31 20:33:13,207 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 278.1875) internal successors, (8902), 32 states have internal predecessors, (8902), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 20:33:13,226 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 553.0) internal successors, (18249), 33 states have internal predecessors, (18249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 20:33:13,230 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 553.0) internal successors, (18249), 33 states have internal predecessors, (18249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 20:33:13,231 INFO L175 Difference]: Start difference. First operand has 150 places, 197 transitions, 1312 flow. Second operand 32 states and 8902 transitions. [2023-08-31 20:33:13,231 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 205 transitions, 1522 flow [2023-08-31 20:33:13,245 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 205 transitions, 1522 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-31 20:33:13,248 INFO L231 Difference]: Finished difference. Result has 189 places, 205 transitions, 1472 flow [2023-08-31 20:33:13,248 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=553, PETRI_DIFFERENCE_MINUEND_FLOW=1312, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=197, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=1472, PETRI_PLACES=189, PETRI_TRANSITIONS=205} [2023-08-31 20:33:13,249 INFO L281 CegarLoopForPetriNet]: 84 programPoint places, 105 predicate places. [2023-08-31 20:33:13,249 INFO L495 AbstractCegarLoop]: Abstraction has has 189 places, 205 transitions, 1472 flow [2023-08-31 20:33:13,251 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 277.34375) internal successors, (8875), 32 states have internal predecessors, (8875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 20:33:13,251 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:33:13,251 INFO L208 CegarLoopForPetriNet]: trace histogram [30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 20:33:13,325 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-08-31 20:33:13,465 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 20:33:13,465 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting gErr1ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2023-08-31 20:33:13,465 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:33:13,465 INFO L85 PathProgramCache]: Analyzing trace with hash 2058308767, now seen corresponding path program 2 times [2023-08-31 20:33:13,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:33:13,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054384173] [2023-08-31 20:33:13,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:33:13,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:33:14,620 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-31 20:33:14,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1780087664] [2023-08-31 20:33:14,620 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-31 20:33:14,620 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 20:33:14,620 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 20:33:14,621 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) [2023-08-31 20:33:14,623 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-31 20:33:19,733 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-31 20:33:19,733 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-31 20:33:19,747 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 17 conjunts are in the unsatisfiable core [2023-08-31 20:33:19,752 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 20:33:19,760 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-31 20:33:19,769 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 21 treesize of output 20 [2023-08-31 20:33:19,787 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 20:33:19,788 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 30 treesize of output 32 [2023-08-31 20:33:19,821 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 20:33:19,821 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 44 [2023-08-31 20:33:19,843 INFO L134 CoverageAnalysis]: Checked inductivity of 466 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 466 trivial. 0 not checked. [2023-08-31 20:33:19,843 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-31 20:33:19,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 20:33:19,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054384173] [2023-08-31 20:33:19,844 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-31 20:33:19,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1780087664] [2023-08-31 20:33:19,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1780087664] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 20:33:19,844 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 20:33:19,844 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-31 20:33:19,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835157177] [2023-08-31 20:33:19,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 20:33:19,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-31 20:33:19,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 20:33:19,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-31 20:33:19,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-31 20:33:20,278 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 227 out of 553 [2023-08-31 20:33:20,279 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 205 transitions, 1472 flow. Second operand has 6 states, 6 states have (on average 230.0) internal successors, (1380), 6 states have internal predecessors, (1380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 20:33:20,279 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 20:33:20,279 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 227 of 553 [2023-08-31 20:33:20,279 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 20:33:22,338 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-08-31 20:33:23,465 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-08-31 20:33:24,451 INFO L130 PetriNetUnfolder]: 2752/6005 cut-off events. [2023-08-31 20:33:24,452 INFO L131 PetriNetUnfolder]: For 6372/6498 co-relation queries the response was YES. [2023-08-31 20:33:24,477 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15847 conditions, 6005 events. 2752/6005 cut-off events. For 6372/6498 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 41954 event pairs, 965 based on Foata normal form. 40/5845 useless extension candidates. Maximal degree in co-relation 15796. Up to 3120 conditions per place. [2023-08-31 20:33:24,498 INFO L137 encePairwiseOnDemand]: 542/553 looper letters, 209 selfloop transitions, 79 changer transitions 0/327 dead transitions. [2023-08-31 20:33:24,498 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 327 transitions, 2732 flow [2023-08-31 20:33:24,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-31 20:33:24,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-31 20:33:24,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1477 transitions. [2023-08-31 20:33:24,502 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4451476793248945 [2023-08-31 20:33:24,502 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1477 transitions. [2023-08-31 20:33:24,502 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1477 transitions. [2023-08-31 20:33:24,503 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 20:33:24,503 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1477 transitions. [2023-08-31 20:33:24,505 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 246.16666666666666) internal successors, (1477), 6 states have internal predecessors, (1477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 20:33:24,508 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 553.0) internal successors, (3871), 7 states have internal predecessors, (3871), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 20:33:24,508 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 553.0) internal successors, (3871), 7 states have internal predecessors, (3871), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 20:33:24,509 INFO L175 Difference]: Start difference. First operand has 189 places, 205 transitions, 1472 flow. Second operand 6 states and 1477 transitions. [2023-08-31 20:33:24,509 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 327 transitions, 2732 flow [2023-08-31 20:33:24,530 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 327 transitions, 2636 flow, removed 25 selfloop flow, removed 23 redundant places. [2023-08-31 20:33:24,534 INFO L231 Difference]: Finished difference. Result has 176 places, 270 transitions, 2274 flow [2023-08-31 20:33:24,534 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=553, PETRI_DIFFERENCE_MINUEND_FLOW=1376, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=205, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2274, PETRI_PLACES=176, PETRI_TRANSITIONS=270} [2023-08-31 20:33:24,535 INFO L281 CegarLoopForPetriNet]: 84 programPoint places, 92 predicate places. [2023-08-31 20:33:24,535 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 270 transitions, 2274 flow [2023-08-31 20:33:24,535 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 230.0) internal successors, (1380), 6 states have internal predecessors, (1380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 20:33:24,536 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:33:24,536 INFO L208 CegarLoopForPetriNet]: trace histogram [30, 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] [2023-08-31 20:33:24,576 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-08-31 20:33:24,749 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-08-31 20:33:24,749 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting fErr2ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2023-08-31 20:33:24,749 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:33:24,749 INFO L85 PathProgramCache]: Analyzing trace with hash 1789177663, now seen corresponding path program 1 times [2023-08-31 20:33:24,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:33:24,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287278730] [2023-08-31 20:33:24,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:33:24,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:33:25,865 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-31 20:33:25,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [13880042] [2023-08-31 20:33:25,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:33:25,865 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 20:33:25,866 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 20:33:25,873 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) [2023-08-31 20:33:25,875 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-08-31 20:33:35,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 20:33:35,729 INFO L263 TraceCheckSpWp]: Trace formula consists of 28531 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-31 20:33:35,740 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 20:33:35,802 INFO L134 CoverageAnalysis]: Checked inductivity of 466 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 465 trivial. 0 not checked. [2023-08-31 20:33:35,802 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-31 20:33:35,866 INFO L134 CoverageAnalysis]: Checked inductivity of 466 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 465 trivial. 0 not checked. [2023-08-31 20:33:35,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 20:33:35,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1287278730] [2023-08-31 20:33:35,866 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-31 20:33:35,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [13880042] [2023-08-31 20:33:35,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [13880042] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-31 20:33:35,867 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-31 20:33:35,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2023-08-31 20:33:35,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186806986] [2023-08-31 20:33:35,867 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-31 20:33:35,868 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-31 20:33:35,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 20:33:35,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-31 20:33:35,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-31 20:33:35,901 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 276 out of 553 [2023-08-31 20:33:35,902 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 270 transitions, 2274 flow. Second operand has 6 states, 6 states have (on average 279.0) internal successors, (1674), 6 states have internal predecessors, (1674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 20:33:35,902 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 20:33:35,902 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 276 of 553 [2023-08-31 20:33:35,902 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 20:33:37,926 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.98s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-08-31 20:33:39,986 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-08-31 20:33:42,053 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-08-31 20:33:43,208 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-08-31 20:33:45,271 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-08-31 20:33:47,007 INFO L130 PetriNetUnfolder]: 1823/4979 cut-off events. [2023-08-31 20:33:47,007 INFO L131 PetriNetUnfolder]: For 9363/9503 co-relation queries the response was YES. [2023-08-31 20:33:47,031 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14302 conditions, 4979 events. 1823/4979 cut-off events. For 9363/9503 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 37497 event pairs, 896 based on Foata normal form. 39/4876 useless extension candidates. Maximal degree in co-relation 14247. Up to 2387 conditions per place. [2023-08-31 20:33:47,048 INFO L137 encePairwiseOnDemand]: 549/553 looper letters, 199 selfloop transitions, 6 changer transitions 0/369 dead transitions. [2023-08-31 20:33:47,048 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 369 transitions, 3207 flow [2023-08-31 20:33:47,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-31 20:33:47,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-31 20:33:47,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1701 transitions. [2023-08-31 20:33:47,051 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5126582278481012 [2023-08-31 20:33:47,051 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1701 transitions. [2023-08-31 20:33:47,051 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1701 transitions. [2023-08-31 20:33:47,052 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 20:33:47,052 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1701 transitions. [2023-08-31 20:33:47,054 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 283.5) internal successors, (1701), 6 states have internal predecessors, (1701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 20:33:47,056 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 553.0) internal successors, (3871), 7 states have internal predecessors, (3871), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 20:33:47,057 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 553.0) internal successors, (3871), 7 states have internal predecessors, (3871), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 20:33:47,057 INFO L175 Difference]: Start difference. First operand has 176 places, 270 transitions, 2274 flow. Second operand 6 states and 1701 transitions. [2023-08-31 20:33:47,057 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 369 transitions, 3207 flow [2023-08-31 20:33:47,091 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 369 transitions, 3207 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-31 20:33:47,095 INFO L231 Difference]: Finished difference. Result has 185 places, 273 transitions, 2437 flow [2023-08-31 20:33:47,096 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=553, PETRI_DIFFERENCE_MINUEND_FLOW=2274, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=270, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=266, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2437, PETRI_PLACES=185, PETRI_TRANSITIONS=273} [2023-08-31 20:33:47,096 INFO L281 CegarLoopForPetriNet]: 84 programPoint places, 101 predicate places. [2023-08-31 20:33:47,097 INFO L495 AbstractCegarLoop]: Abstraction has has 185 places, 273 transitions, 2437 flow [2023-08-31 20:33:47,097 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 279.0) internal successors, (1674), 6 states have internal predecessors, (1674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 20:33:47,097 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:33:47,097 INFO L208 CegarLoopForPetriNet]: trace histogram [120, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 20:33:47,207 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-08-31 20:33:47,325 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 20:33:47,325 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting fErr2ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2023-08-31 20:33:47,325 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:33:47,325 INFO L85 PathProgramCache]: Analyzing trace with hash 1440688167, now seen corresponding path program 2 times [2023-08-31 20:33:47,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:33:47,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420622711] [2023-08-31 20:33:47,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:33:47,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:33:51,494 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-31 20:33:51,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [151644654] [2023-08-31 20:33:51,495 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-31 20:33:51,495 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 20:33:51,495 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 20:33:51,499 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) [2023-08-31 20:33:51,500 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-08-31 20:34:06,375 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-31 20:34:06,375 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-31 20:34:06,426 INFO L263 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 17 conjunts are in the unsatisfiable core [2023-08-31 20:34:06,437 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 20:34:06,455 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-31 20:34:06,465 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 21 treesize of output 20 [2023-08-31 20:34:06,480 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 20:34:06,481 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 30 treesize of output 32 [2023-08-31 20:34:06,501 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 20:34:06,501 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 44 [2023-08-31 20:34:06,525 INFO L134 CoverageAnalysis]: Checked inductivity of 7636 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7636 trivial. 0 not checked. [2023-08-31 20:34:06,525 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-31 20:34:06,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 20:34:06,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420622711] [2023-08-31 20:34:06,526 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-31 20:34:06,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [151644654] [2023-08-31 20:34:06,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [151644654] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 20:34:06,526 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 20:34:06,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-31 20:34:06,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534467615] [2023-08-31 20:34:06,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 20:34:06,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-31 20:34:06,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 20:34:06,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-31 20:34:06,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-31 20:34:06,863 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 205 out of 553 [2023-08-31 20:34:06,864 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 273 transitions, 2437 flow. Second operand has 6 states, 6 states have (on average 209.33333333333334) internal successors, (1256), 6 states have internal predecessors, (1256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 20:34:06,864 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 20:34:06,864 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 205 of 553 [2023-08-31 20:34:06,865 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 20:34:08,933 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-08-31 20:34:10,200 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-08-31 20:34:12,490 INFO L130 PetriNetUnfolder]: 6070/10448 cut-off events. [2023-08-31 20:34:12,491 INFO L131 PetriNetUnfolder]: For 14983/15209 co-relation queries the response was YES. [2023-08-31 20:34:12,529 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32106 conditions, 10448 events. 6070/10448 cut-off events. For 14983/15209 co-relation queries the response was YES. Maximal size of possible extension queue 198. Compared 60540 event pairs, 3377 based on Foata normal form. 0/10162 useless extension candidates. Maximal degree in co-relation 32047. Up to 9117 conditions per place. [2023-08-31 20:34:12,562 INFO L137 encePairwiseOnDemand]: 530/553 looper letters, 284 selfloop transitions, 125 changer transitions 0/421 dead transitions. [2023-08-31 20:34:12,562 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 421 transitions, 3903 flow [2023-08-31 20:34:12,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-31 20:34:12,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-31 20:34:12,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1417 transitions. [2023-08-31 20:34:12,564 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42706449668474983 [2023-08-31 20:34:12,565 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1417 transitions. [2023-08-31 20:34:12,565 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1417 transitions. [2023-08-31 20:34:12,565 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 20:34:12,565 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1417 transitions. [2023-08-31 20:34:12,567 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 236.16666666666666) internal successors, (1417), 6 states have internal predecessors, (1417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 20:34:12,570 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 553.0) internal successors, (3871), 7 states have internal predecessors, (3871), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 20:34:12,570 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 553.0) internal successors, (3871), 7 states have internal predecessors, (3871), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 20:34:12,570 INFO L175 Difference]: Start difference. First operand has 185 places, 273 transitions, 2437 flow. Second operand 6 states and 1417 transitions. [2023-08-31 20:34:12,570 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 421 transitions, 3903 flow [2023-08-31 20:34:12,618 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 421 transitions, 3895 flow, removed 3 selfloop flow, removed 1 redundant places. [2023-08-31 20:34:12,623 INFO L231 Difference]: Finished difference. Result has 194 places, 359 transitions, 3457 flow [2023-08-31 20:34:12,624 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=553, PETRI_DIFFERENCE_MINUEND_FLOW=2429, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=273, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=199, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3457, PETRI_PLACES=194, PETRI_TRANSITIONS=359} [2023-08-31 20:34:12,624 INFO L281 CegarLoopForPetriNet]: 84 programPoint places, 110 predicate places. [2023-08-31 20:34:12,624 INFO L495 AbstractCegarLoop]: Abstraction has has 194 places, 359 transitions, 3457 flow [2023-08-31 20:34:12,625 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 209.33333333333334) internal successors, (1256), 6 states have internal predecessors, (1256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 20:34:12,625 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:34:12,625 INFO L208 CegarLoopForPetriNet]: trace histogram [120, 4, 4, 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] [2023-08-31 20:34:12,698 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-08-31 20:34:12,845 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,SelfDestructingSolverStorable12 [2023-08-31 20:34:12,845 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting gErr2ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2023-08-31 20:34:12,845 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:34:12,845 INFO L85 PathProgramCache]: Analyzing trace with hash 1049862508, now seen corresponding path program 1 times [2023-08-31 20:34:12,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:34:12,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691299334] [2023-08-31 20:34:12,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:34:12,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:34:17,432 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-31 20:34:17,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [911647932] [2023-08-31 20:34:17,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:34:17,433 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 20:34:17,433 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 20:34:17,435 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) [2023-08-31 20:34:17,436 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-08-31 20:34:54,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 20:34:55,698 INFO L263 TraceCheckSpWp]: Trace formula consists of 113595 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-31 20:34:55,748 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 20:34:55,911 INFO L134 CoverageAnalysis]: Checked inductivity of 7636 backedges. 0 proven. 5776 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2023-08-31 20:34:55,911 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-31 20:34:56,144 INFO L134 CoverageAnalysis]: Checked inductivity of 7636 backedges. 0 proven. 5776 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2023-08-31 20:34:56,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 20:34:56,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1691299334] [2023-08-31 20:34:56,144 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-31 20:34:56,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [911647932] [2023-08-31 20:34:56,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [911647932] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-31 20:34:56,145 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-31 20:34:56,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2023-08-31 20:34:56,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297379715] [2023-08-31 20:34:56,145 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-31 20:34:56,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-31 20:34:56,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 20:34:56,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-31 20:34:56,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2023-08-31 20:34:56,204 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 276 out of 553 [2023-08-31 20:34:56,206 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 359 transitions, 3457 flow. Second operand has 12 states, 12 states have (on average 279.1666666666667) internal successors, (3350), 12 states have internal predecessors, (3350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 20:34:56,206 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 20:34:56,206 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 276 of 553 [2023-08-31 20:34:56,206 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 20:34:58,247 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-08-31 20:35:00,156 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.86s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-08-31 20:35:03,201 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-08-31 20:35:05,359 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] Killed by 15