./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 TOGETHER --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 TOGETHER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-29 17:54:32,991 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-29 17:54:32,994 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-29 17:54:33,037 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-29 17:54:33,038 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-29 17:54:33,040 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-29 17:54:33,042 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-29 17:54:33,045 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-29 17:54:33,047 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-29 17:54:33,051 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-29 17:54:33,052 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-29 17:54:33,054 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-29 17:54:33,055 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-29 17:54:33,056 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-29 17:54:33,058 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-29 17:54:33,063 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-29 17:54:33,064 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-29 17:54:33,065 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-29 17:54:33,067 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-29 17:54:33,071 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-29 17:54:33,073 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-29 17:54:33,074 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-29 17:54:33,075 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-29 17:54:33,076 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-29 17:54:33,082 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-29 17:54:33,082 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-29 17:54:33,083 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-29 17:54:33,084 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-29 17:54:33,085 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-29 17:54:33,086 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-29 17:54:33,086 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-29 17:54:33,087 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-29 17:54:33,089 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-29 17:54:33,089 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-29 17:54:33,090 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-29 17:54:33,090 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-29 17:54:33,091 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-29 17:54:33,091 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-29 17:54:33,091 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-29 17:54:33,092 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-29 17:54:33,093 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-29 17:54:33,098 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf [2023-08-29 17:54:33,127 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-29 17:54:33,127 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-29 17:54:33,128 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-29 17:54:33,128 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-29 17:54:33,129 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-29 17:54:33,129 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-29 17:54:33,130 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-29 17:54:33,130 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-29 17:54:33,130 INFO L138 SettingsManager]: * Use SBE=true [2023-08-29 17:54:33,130 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-29 17:54:33,131 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-29 17:54:33,131 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-29 17:54:33,132 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-29 17:54:33,132 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-29 17:54:33,132 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-29 17:54:33,132 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-29 17:54:33,132 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-29 17:54:33,132 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-29 17:54:33,133 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-08-29 17:54:33,133 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-29 17:54:33,133 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-29 17:54:33,133 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-29 17:54:33,133 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-29 17:54:33,134 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-29 17:54:33,134 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-29 17:54:33,134 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-29 17:54:33,134 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-29 17:54:33,134 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-29 17:54:33,135 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-29 17:54:33,135 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-29 17:54:33,135 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-29 17:54:33,135 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-29 17:54:33,135 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-29 17:54:33,136 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-29 17:54:33,136 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-29 17:54:33,136 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-29 17:54:33,136 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-29 17:54:33,136 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8ffb6ed4cf93a465c15dff37fbdc82f2f1bfe68c16d8d908373acd9cd0f46e43 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-29 17:54:33,453 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-29 17:54:33,476 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-29 17:54:33,478 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-29 17:54:33,479 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-29 17:54:33,480 INFO L275 PluginConnector]: CDTParser initialized [2023-08-29 17:54:33,481 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/09-regions_20-arrayloop2_rc.i [2023-08-29 17:54:34,637 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-29 17:54:34,951 INFO L351 CDTParser]: Found 1 translation units. [2023-08-29 17:54:34,951 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/09-regions_20-arrayloop2_rc.i [2023-08-29 17:54:34,971 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9925c2729/1da64993454e47a2b49216d779b4e52e/FLAG4df951cfe [2023-08-29 17:54:34,987 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9925c2729/1da64993454e47a2b49216d779b4e52e [2023-08-29 17:54:34,990 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-29 17:54:34,991 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-29 17:54:34,994 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-29 17:54:34,994 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-29 17:54:34,997 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-29 17:54:34,998 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 05:54:34" (1/1) ... [2023-08-29 17:54:35,000 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e06418f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 05:54:34, skipping insertion in model container [2023-08-29 17:54:35,000 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 05:54:34" (1/1) ... [2023-08-29 17:54:35,006 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-29 17:54:35,055 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-29 17:54:35,498 WARN L1562 CHandler]: Possible shadowing of function new [2023-08-29 17:54:35,501 WARN L1562 CHandler]: Possible shadowing of function new [2023-08-29 17:54:35,502 WARN L1562 CHandler]: Possible shadowing of function new [2023-08-29 17:54:35,504 WARN L1562 CHandler]: Possible shadowing of function new [2023-08-29 17:54:35,551 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-29 17:54:35,567 INFO L203 MainTranslator]: Completed pre-run [2023-08-29 17:54:35,609 WARN L1562 CHandler]: Possible shadowing of function new [2023-08-29 17:54:35,610 WARN L1562 CHandler]: Possible shadowing of function new [2023-08-29 17:54:35,615 WARN L1562 CHandler]: Possible shadowing of function new [2023-08-29 17:54:35,616 WARN L1562 CHandler]: Possible shadowing of function new [2023-08-29 17:54:35,634 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-29 17:54:35,724 INFO L208 MainTranslator]: Completed translation [2023-08-29 17:54:35,725 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 05:54:35 WrapperNode [2023-08-29 17:54:35,725 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-29 17:54:35,726 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-29 17:54:35,727 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-29 17:54:35,727 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-29 17:54:35,731 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 05:54:35" (1/1) ... [2023-08-29 17:54:35,752 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 05:54:35" (1/1) ... [2023-08-29 17:54:35,796 INFO L138 Inliner]: procedures = 272, calls = 38, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 271 [2023-08-29 17:54:35,797 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-29 17:54:35,798 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-29 17:54:35,798 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-29 17:54:35,798 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-29 17:54:35,806 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 05:54:35" (1/1) ... [2023-08-29 17:54:35,806 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 05:54:35" (1/1) ... [2023-08-29 17:54:35,816 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 05:54:35" (1/1) ... [2023-08-29 17:54:35,818 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 05:54:35" (1/1) ... [2023-08-29 17:54:35,857 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 05:54:35" (1/1) ... [2023-08-29 17:54:35,861 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 05:54:35" (1/1) ... [2023-08-29 17:54:35,863 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 05:54:35" (1/1) ... [2023-08-29 17:54:35,865 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 05:54:35" (1/1) ... [2023-08-29 17:54:35,871 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-29 17:54:35,872 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-29 17:54:35,872 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-29 17:54:35,872 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-29 17:54:35,873 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 05:54:35" (1/1) ... [2023-08-29 17:54:35,878 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-29 17:54:35,894 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 17:54:35,910 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) [2023-08-29 17:54:35,934 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 [2023-08-29 17:54:35,951 INFO L130 BoogieDeclarations]: Found specification of procedure f [2023-08-29 17:54:35,952 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2023-08-29 17:54:35,952 INFO L130 BoogieDeclarations]: Found specification of procedure g [2023-08-29 17:54:35,952 INFO L138 BoogieDeclarations]: Found implementation of procedure g [2023-08-29 17:54:35,952 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-29 17:54:35,952 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-08-29 17:54:35,952 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-29 17:54:35,953 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-29 17:54:35,953 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-29 17:54:35,953 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-29 17:54:35,953 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-29 17:54:35,953 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-29 17:54:35,953 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-08-29 17:54:35,953 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-29 17:54:35,953 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-29 17:54:35,955 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-29 17:54:36,119 INFO L236 CfgBuilder]: Building ICFG [2023-08-29 17:54:36,120 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-29 17:54:36,627 INFO L277 CfgBuilder]: Performing block encoding [2023-08-29 17:54:36,648 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-29 17:54:36,648 INFO L302 CfgBuilder]: Removed 6 assume(true) statements. [2023-08-29 17:54:36,650 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 05:54:36 BoogieIcfgContainer [2023-08-29 17:54:36,650 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-29 17:54:36,653 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-29 17:54:36,653 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-29 17:54:36,656 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-29 17:54:36,656 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.08 05:54:34" (1/3) ... [2023-08-29 17:54:36,656 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50a056e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 05:54:36, skipping insertion in model container [2023-08-29 17:54:36,657 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 05:54:35" (2/3) ... [2023-08-29 17:54:36,657 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50a056e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 05:54:36, skipping insertion in model container [2023-08-29 17:54:36,657 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 05:54:36" (3/3) ... [2023-08-29 17:54:36,659 INFO L112 eAbstractionObserver]: Analyzing ICFG 09-regions_20-arrayloop2_rc.i [2023-08-29 17:54:36,665 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-29 17:54:36,674 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-29 17:54:36,674 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 18 error locations. [2023-08-29 17:54:36,674 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-29 17:54:36,859 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-29 17:54:36,906 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 284 places, 291 transitions, 592 flow [2023-08-29 17:54:37,022 INFO L130 PetriNetUnfolder]: 14/289 cut-off events. [2023-08-29 17:54:37,026 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 17:54:37,035 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. [2023-08-29 17:54:37,035 INFO L82 GeneralOperation]: Start removeDead. Operand has 284 places, 291 transitions, 592 flow [2023-08-29 17:54:37,044 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 282 places, 289 transitions, 584 flow [2023-08-29 17:54:37,047 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-29 17:54:37,061 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 282 places, 289 transitions, 584 flow [2023-08-29 17:54:37,064 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 282 places, 289 transitions, 584 flow [2023-08-29 17:54:37,065 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 282 places, 289 transitions, 584 flow [2023-08-29 17:54:37,126 INFO L130 PetriNetUnfolder]: 14/289 cut-off events. [2023-08-29 17:54:37,127 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 17:54:37,131 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. [2023-08-29 17:54:37,137 INFO L119 LiptonReduction]: Number of co-enabled transitions 12194 [2023-08-29 17:55:05,675 WARN L222 SmtUtils]: Spent 5.78s 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) [2023-08-29 17:55:15,846 WARN L222 SmtUtils]: Spent 5.39s 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) [2023-08-29 17:55:29,314 WARN L222 SmtUtils]: Spent 12.69s 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) [2023-08-29 17:55:37,216 WARN L222 SmtUtils]: Spent 7.90s 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) [2023-08-29 17:55:48,563 WARN L222 SmtUtils]: Spent 11.34s 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) [2023-08-29 17:55:56,436 WARN L222 SmtUtils]: Spent 7.87s 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) [2023-08-29 17:57:37,856 WARN L222 SmtUtils]: Spent 1.69m 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) [2023-08-29 17:59:23,961 WARN L222 SmtUtils]: Spent 1.77m 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) [2023-08-29 18:01:40,381 WARN L222 SmtUtils]: Spent 2.27m 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) [2023-08-29 18:03:55,077 WARN L222 SmtUtils]: Spent 2.24m 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) [2023-08-29 18:03:55,111 INFO L134 LiptonReduction]: Checked pairs total: 46673 [2023-08-29 18:03:55,111 INFO L136 LiptonReduction]: Total number of compositions: 262 [2023-08-29 18:03:55,123 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-29 18:03:55,127 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;@44c3c560, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-29 18:03:55,127 INFO L358 AbstractCegarLoop]: Starting to check reachability of 28 error locations. [2023-08-29 18:03:55,129 INFO L130 PetriNetUnfolder]: 0/2 cut-off events. [2023-08-29 18:03:55,129 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 18:03:55,129 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 18:03:55,130 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-29 18:03:55,130 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)] === [2023-08-29 18:03:55,134 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 18:03:55,135 INFO L85 PathProgramCache]: Analyzing trace with hash 33274, now seen corresponding path program 1 times [2023-08-29 18:03:55,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 18:03:55,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179847327] [2023-08-29 18:03:55,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 18:03:55,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 18:03:55,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 18:03:55,270 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 18:03:55,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 18:03:55,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179847327] [2023-08-29 18:03:55,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1179847327] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 18:03:55,273 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 18:03:55,273 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 18:03:55,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689237134] [2023-08-29 18:03:55,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 18:03:55,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-29 18:03:55,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 18:03:55,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-29 18:03:55,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-29 18:03:55,304 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 281 out of 553 [2023-08-29 18:03:55,307 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) [2023-08-29 18:03:55,307 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 18:03:55,307 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 281 of 553 [2023-08-29 18:03:55,308 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 18:03:56,402 INFO L130 PetriNetUnfolder]: 399/1300 cut-off events. [2023-08-29 18:03:56,403 INFO L131 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2023-08-29 18:03:56,404 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. [2023-08-29 18:03:56,410 INFO L137 encePairwiseOnDemand]: 543/553 looper letters, 32 selfloop transitions, 0 changer transitions 0/73 dead transitions. [2023-08-29 18:03:56,410 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 73 transitions, 216 flow [2023-08-29 18:03:56,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-29 18:03:56,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-29 18:03:56,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 604 transitions. [2023-08-29 18:03:56,431 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.546112115732369 [2023-08-29 18:03:56,432 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 604 transitions. [2023-08-29 18:03:56,434 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 604 transitions. [2023-08-29 18:03:56,437 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 18:03:56,439 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 604 transitions. [2023-08-29 18:03:56,444 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) [2023-08-29 18:03:56,450 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) [2023-08-29 18:03:56,451 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) [2023-08-29 18:03:56,453 INFO L175 Difference]: Start difference. First operand has 84 places, 83 transitions, 172 flow. Second operand 2 states and 604 transitions. [2023-08-29 18:03:56,455 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 73 transitions, 216 flow [2023-08-29 18:03:56,457 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 73 transitions, 214 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-29 18:03:56,459 INFO L231 Difference]: Finished difference. Result has 73 places, 73 transitions, 150 flow [2023-08-29 18:03:56,464 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} [2023-08-29 18:03:56,467 INFO L281 CegarLoopForPetriNet]: 84 programPoint places, -11 predicate places. [2023-08-29 18:03:56,468 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 73 transitions, 150 flow [2023-08-29 18:03:56,468 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) [2023-08-29 18:03:56,468 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 18:03:56,469 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 18:03:56,469 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-29 18:03:56,469 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting fErr0ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2023-08-29 18:03:56,469 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 18:03:56,470 INFO L85 PathProgramCache]: Analyzing trace with hash 146942558, now seen corresponding path program 1 times [2023-08-29 18:03:56,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 18:03:56,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694018612] [2023-08-29 18:03:56,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 18:03:56,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 18:03:56,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 18:03:56,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 18:03:56,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 18:03:56,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1694018612] [2023-08-29 18:03:56,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1694018612] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 18:03:56,563 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 18:03:56,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 18:03:56,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844458266] [2023-08-29 18:03:56,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 18:03:56,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 18:03:56,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 18:03:56,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 18:03:56,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 18:03:56,581 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 277 out of 553 [2023-08-29 18:03:56,583 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) [2023-08-29 18:03:56,583 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 18:03:56,583 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 277 of 553 [2023-08-29 18:03:56,583 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 18:03:57,802 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-08-29 18:03:59,289 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.44s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-08-29 18:03:59,467 INFO L130 PetriNetUnfolder]: 400/1303 cut-off events. [2023-08-29 18:03:59,468 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 18:03:59,470 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. [2023-08-29 18:03:59,475 INFO L137 encePairwiseOnDemand]: 550/553 looper letters, 33 selfloop transitions, 2 changer transitions 0/76 dead transitions. [2023-08-29 18:03:59,475 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 76 transitions, 226 flow [2023-08-29 18:03:59,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 18:03:59,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 18:03:59,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 867 transitions. [2023-08-29 18:03:59,478 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5226039783001808 [2023-08-29 18:03:59,478 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 867 transitions. [2023-08-29 18:03:59,478 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 867 transitions. [2023-08-29 18:03:59,479 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 18:03:59,479 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 867 transitions. [2023-08-29 18:03:59,489 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) [2023-08-29 18:03:59,492 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) [2023-08-29 18:03:59,493 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) [2023-08-29 18:03:59,494 INFO L175 Difference]: Start difference. First operand has 73 places, 73 transitions, 150 flow. Second operand 3 states and 867 transitions. [2023-08-29 18:03:59,494 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 76 transitions, 226 flow [2023-08-29 18:03:59,494 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 76 transitions, 226 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-29 18:03:59,496 INFO L231 Difference]: Finished difference. Result has 76 places, 74 transitions, 162 flow [2023-08-29 18:03:59,496 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} [2023-08-29 18:03:59,497 INFO L281 CegarLoopForPetriNet]: 84 programPoint places, -8 predicate places. [2023-08-29 18:03:59,497 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 74 transitions, 162 flow [2023-08-29 18:03:59,498 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) [2023-08-29 18:03:59,498 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 18:03:59,498 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 18:03:59,498 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-29 18:03:59,498 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting fErr0ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2023-08-29 18:03:59,499 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 18:03:59,499 INFO L85 PathProgramCache]: Analyzing trace with hash -1708587882, now seen corresponding path program 1 times [2023-08-29 18:03:59,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 18:03:59,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710224367] [2023-08-29 18:03:59,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 18:03:59,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 18:03:59,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 18:03:59,586 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 18:03:59,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 18:03:59,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [710224367] [2023-08-29 18:03:59,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [710224367] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 18:03:59,587 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 18:03:59,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-29 18:03:59,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705840666] [2023-08-29 18:03:59,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 18:03:59,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 18:03:59,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 18:03:59,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 18:03:59,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 18:03:59,599 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 277 out of 553 [2023-08-29 18:03:59,601 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) [2023-08-29 18:03:59,601 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 18:03:59,601 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 277 of 553 [2023-08-29 18:03:59,601 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 18:04:01,561 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.92s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-08-29 18:04:03,571 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-08-29 18:04:05,550 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 [] [2023-08-29 18:04:05,746 INFO L130 PetriNetUnfolder]: 400/1305 cut-off events. [2023-08-29 18:04:05,746 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 18:04:05,748 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. [2023-08-29 18:04:05,753 INFO L137 encePairwiseOnDemand]: 550/553 looper letters, 32 selfloop transitions, 2 changer transitions 0/75 dead transitions. [2023-08-29 18:04:05,753 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 75 transitions, 232 flow [2023-08-29 18:04:05,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 18:04:05,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 18:04:05,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 865 transitions. [2023-08-29 18:04:05,757 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5213984327908379 [2023-08-29 18:04:05,757 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 865 transitions. [2023-08-29 18:04:05,757 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 865 transitions. [2023-08-29 18:04:05,758 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 18:04:05,758 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 865 transitions. [2023-08-29 18:04:05,760 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) [2023-08-29 18:04:05,763 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) [2023-08-29 18:04:05,764 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) [2023-08-29 18:04:05,764 INFO L175 Difference]: Start difference. First operand has 76 places, 74 transitions, 162 flow. Second operand 3 states and 865 transitions. [2023-08-29 18:04:05,764 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 75 transitions, 232 flow [2023-08-29 18:04:05,765 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 75 transitions, 230 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-29 18:04:05,766 INFO L231 Difference]: Finished difference. Result has 78 places, 75 transitions, 174 flow [2023-08-29 18:04:05,767 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} [2023-08-29 18:04:05,768 INFO L281 CegarLoopForPetriNet]: 84 programPoint places, -6 predicate places. [2023-08-29 18:04:05,768 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 75 transitions, 174 flow [2023-08-29 18:04:05,769 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) [2023-08-29 18:04:05,769 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 18:04:05,769 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 18:04:05,769 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-29 18:04:05,770 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting fErr0ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2023-08-29 18:04:05,773 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 18:04:05,773 INFO L85 PathProgramCache]: Analyzing trace with hash 509153872, now seen corresponding path program 1 times [2023-08-29 18:04:05,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 18:04:05,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [293464168] [2023-08-29 18:04:05,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 18:04:05,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 18:04:05,865 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-29 18:04:05,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2040094043] [2023-08-29 18:04:05,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 18:04:05,867 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 18:04:05,867 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 18:04:05,873 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) [2023-08-29 18:04:05,881 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-29 18:04:06,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 18:04:06,208 INFO L263 TraceCheckSpWp]: Trace formula consists of 1111 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-29 18:04:06,213 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 18:04:06,244 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 18:04:06,244 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 18:04:06,262 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 18:04:06,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 18:04:06,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [293464168] [2023-08-29 18:04:06,263 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-29 18:04:06,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2040094043] [2023-08-29 18:04:06,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2040094043] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-29 18:04:06,263 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-29 18:04:06,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2023-08-29 18:04:06,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862116834] [2023-08-29 18:04:06,264 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-29 18:04:06,264 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-29 18:04:06,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 18:04:06,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-29 18:04:06,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-29 18:04:06,285 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 276 out of 553 [2023-08-29 18:04:06,287 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) [2023-08-29 18:04:06,287 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 18:04:06,287 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 276 of 553 [2023-08-29 18:04:06,287 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 18:04:07,477 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 [] [2023-08-29 18:04:09,986 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.64s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-08-29 18:04:12,630 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.78s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-08-29 18:04:12,857 INFO L130 PetriNetUnfolder]: 400/1311 cut-off events. [2023-08-29 18:04:12,857 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-29 18:04:12,859 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. [2023-08-29 18:04:12,864 INFO L137 encePairwiseOnDemand]: 550/553 looper letters, 32 selfloop transitions, 5 changer transitions 0/78 dead transitions. [2023-08-29 18:04:12,865 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 78 transitions, 260 flow [2023-08-29 18:04:12,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-29 18:04:12,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-29 18:04:12,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1695 transitions. [2023-08-29 18:04:12,869 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5108499095840868 [2023-08-29 18:04:12,869 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1695 transitions. [2023-08-29 18:04:12,869 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1695 transitions. [2023-08-29 18:04:12,870 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 18:04:12,870 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1695 transitions. [2023-08-29 18:04:12,873 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) [2023-08-29 18:04:12,879 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) [2023-08-29 18:04:12,881 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) [2023-08-29 18:04:12,881 INFO L175 Difference]: Start difference. First operand has 78 places, 75 transitions, 174 flow. Second operand 6 states and 1695 transitions. [2023-08-29 18:04:12,881 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 78 transitions, 260 flow [2023-08-29 18:04:12,883 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 78 transitions, 256 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-29 18:04:12,886 INFO L231 Difference]: Finished difference. Result has 85 places, 78 transitions, 212 flow [2023-08-29 18:04:12,886 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} [2023-08-29 18:04:12,888 INFO L281 CegarLoopForPetriNet]: 84 programPoint places, 1 predicate places. [2023-08-29 18:04:12,888 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 78 transitions, 212 flow [2023-08-29 18:04:12,890 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) [2023-08-29 18:04:12,890 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 18:04:12,890 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 18:04:12,904 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-29 18:04:13,098 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 [2023-08-29 18:04:13,099 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting fErr0ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2023-08-29 18:04:13,100 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 18:04:13,100 INFO L85 PathProgramCache]: Analyzing trace with hash 748397334, now seen corresponding path program 2 times [2023-08-29 18:04:13,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 18:04:13,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644005136] [2023-08-29 18:04:13,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 18:04:13,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 18:04:13,300 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-29 18:04:13,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [469058132] [2023-08-29 18:04:13,301 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-29 18:04:13,301 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 18:04:13,301 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 18:04:13,302 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) [2023-08-29 18:04:13,328 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-29 18:04:13,847 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-29 18:04:13,847 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-29 18:04:13,851 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 17 conjunts are in the unsatisfiable core [2023-08-29 18:04:13,854 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 18:04:13,883 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 [2023-08-29 18:04:13,904 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 [2023-08-29 18:04:13,943 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-29 18:04:13,946 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 [2023-08-29 18:04:13,988 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-29 18:04:13,988 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 [2023-08-29 18:04:14,013 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-08-29 18:04:14,013 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 18:04:14,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 18:04:14,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [644005136] [2023-08-29 18:04:14,015 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-29 18:04:14,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [469058132] [2023-08-29 18:04:14,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [469058132] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 18:04:14,015 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 18:04:14,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-29 18:04:14,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766318943] [2023-08-29 18:04:14,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 18:04:14,017 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-29 18:04:14,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 18:04:14,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-29 18:04:14,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-29 18:04:14,730 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 228 out of 553 [2023-08-29 18:04:14,732 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) [2023-08-29 18:04:14,732 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 18:04:14,732 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 228 of 553 [2023-08-29 18:04:14,732 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 18:04:16,118 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.26s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-08-29 18:04:18,127 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-08-29 18:04:19,524 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.40s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-08-29 18:04:21,136 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.61s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-08-29 18:04:21,752 INFO L130 PetriNetUnfolder]: 1235/2922 cut-off events. [2023-08-29 18:04:21,752 INFO L131 PetriNetUnfolder]: For 9/9 co-relation queries the response was YES. [2023-08-29 18:04:21,757 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. [2023-08-29 18:04:21,766 INFO L137 encePairwiseOnDemand]: 541/553 looper letters, 106 selfloop transitions, 23 changer transitions 0/158 dead transitions. [2023-08-29 18:04:21,767 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 158 transitions, 638 flow [2023-08-29 18:04:21,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-29 18:04:21,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-29 18:04:21,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1493 transitions. [2023-08-29 18:04:21,771 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4499698613622664 [2023-08-29 18:04:21,771 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1493 transitions. [2023-08-29 18:04:21,771 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1493 transitions. [2023-08-29 18:04:21,772 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 18:04:21,772 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1493 transitions. [2023-08-29 18:04:21,776 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) [2023-08-29 18:04:21,782 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) [2023-08-29 18:04:21,784 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) [2023-08-29 18:04:21,784 INFO L175 Difference]: Start difference. First operand has 85 places, 78 transitions, 212 flow. Second operand 6 states and 1493 transitions. [2023-08-29 18:04:21,784 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 158 transitions, 638 flow [2023-08-29 18:04:21,787 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 158 transitions, 624 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-08-29 18:04:21,789 INFO L231 Difference]: Finished difference. Result has 94 places, 100 transitions, 356 flow [2023-08-29 18:04:21,790 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} [2023-08-29 18:04:21,792 INFO L281 CegarLoopForPetriNet]: 84 programPoint places, 10 predicate places. [2023-08-29 18:04:21,792 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 100 transitions, 356 flow [2023-08-29 18:04:21,792 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) [2023-08-29 18:04:21,793 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 18:04:21,793 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 18:04:21,802 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-29 18:04:21,993 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 [2023-08-29 18:04:21,993 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting gErr0ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2023-08-29 18:04:21,994 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 18:04:21,994 INFO L85 PathProgramCache]: Analyzing trace with hash 1954051366, now seen corresponding path program 1 times [2023-08-29 18:04:21,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 18:04:21,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491518269] [2023-08-29 18:04:21,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 18:04:21,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 18:04:22,205 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-29 18:04:22,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [791525388] [2023-08-29 18:04:22,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 18:04:22,206 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 18:04:22,206 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 18:04:22,207 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) [2023-08-29 18:04:22,210 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-29 18:04:23,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 18:04:23,530 INFO L263 TraceCheckSpWp]: Trace formula consists of 3966 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-29 18:04:23,534 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 18:04:23,576 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 18:04:23,576 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 18:04:23,630 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 18:04:23,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 18:04:23,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1491518269] [2023-08-29 18:04:23,631 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-29 18:04:23,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [791525388] [2023-08-29 18:04:23,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [791525388] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-29 18:04:23,631 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-29 18:04:23,632 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2023-08-29 18:04:23,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833634864] [2023-08-29 18:04:23,632 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-29 18:04:23,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-29 18:04:23,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 18:04:23,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-29 18:04:23,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2023-08-29 18:04:23,667 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 276 out of 553 [2023-08-29 18:04:23,671 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) [2023-08-29 18:04:23,671 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 18:04:23,671 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 276 of 553 [2023-08-29 18:04:23,671 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 18:04:27,339 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.82s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-08-29 18:04:30,086 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.75s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-08-29 18:04:32,726 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-08-29 18:04:33,792 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-08-29 18:04:35,343 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.55s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-08-29 18:04:36,468 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-08-29 18:04:38,477 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 [] [2023-08-29 18:04:39,755 INFO L130 PetriNetUnfolder]: 711/2204 cut-off events. [2023-08-29 18:04:39,756 INFO L131 PetriNetUnfolder]: For 369/399 co-relation queries the response was YES. [2023-08-29 18:04:39,762 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. [2023-08-29 18:04:39,770 INFO L137 encePairwiseOnDemand]: 550/553 looper letters, 35 selfloop transitions, 11 changer transitions 0/106 dead transitions. [2023-08-29 18:04:39,771 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 106 transitions, 484 flow [2023-08-29 18:04:39,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-29 18:04:39,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-29 18:04:39,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 3360 transitions. [2023-08-29 18:04:39,778 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5063291139240507 [2023-08-29 18:04:39,779 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 3360 transitions. [2023-08-29 18:04:39,779 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 3360 transitions. [2023-08-29 18:04:39,780 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 18:04:39,780 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 3360 transitions. [2023-08-29 18:04:39,786 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) [2023-08-29 18:04:39,810 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) [2023-08-29 18:04:39,811 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) [2023-08-29 18:04:39,812 INFO L175 Difference]: Start difference. First operand has 94 places, 100 transitions, 356 flow. Second operand 12 states and 3360 transitions. [2023-08-29 18:04:39,812 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 106 transitions, 484 flow [2023-08-29 18:04:39,816 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 106 transitions, 484 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-29 18:04:39,820 INFO L231 Difference]: Finished difference. Result has 111 places, 106 transitions, 452 flow [2023-08-29 18:04:39,821 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} [2023-08-29 18:04:39,823 INFO L281 CegarLoopForPetriNet]: 84 programPoint places, 27 predicate places. [2023-08-29 18:04:39,823 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 106 transitions, 452 flow [2023-08-29 18:04:39,825 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) [2023-08-29 18:04:39,825 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 18:04:39,825 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 18:04:39,847 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-29 18:04:40,042 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 [2023-08-29 18:04:40,043 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting gErr0ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2023-08-29 18:04:40,043 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 18:04:40,043 INFO L85 PathProgramCache]: Analyzing trace with hash -489694490, now seen corresponding path program 2 times [2023-08-29 18:04:40,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 18:04:40,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2097894489] [2023-08-29 18:04:40,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 18:04:40,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 18:04:40,623 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-29 18:04:40,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [157489671] [2023-08-29 18:04:40,623 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-29 18:04:40,623 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 18:04:40,624 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 18:04:40,625 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) [2023-08-29 18:04:40,628 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-29 18:04:42,037 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-29 18:04:42,037 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-29 18:04:42,043 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 17 conjunts are in the unsatisfiable core [2023-08-29 18:04:42,048 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 18:04:42,055 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 [2023-08-29 18:04:42,077 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 [2023-08-29 18:04:42,105 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-29 18:04:42,106 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 [2023-08-29 18:04:42,141 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-29 18:04:42,141 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 [2023-08-29 18:04:42,167 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-08-29 18:04:42,167 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 18:04:42,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 18:04:42,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2097894489] [2023-08-29 18:04:42,168 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-29 18:04:42,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [157489671] [2023-08-29 18:04:42,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [157489671] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 18:04:42,168 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 18:04:42,168 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-29 18:04:42,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633088822] [2023-08-29 18:04:42,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 18:04:42,169 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-29 18:04:42,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 18:04:42,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-29 18:04:42,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-29 18:04:42,828 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 228 out of 553 [2023-08-29 18:04:42,829 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) [2023-08-29 18:04:42,829 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 18:04:42,829 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 228 of 553 [2023-08-29 18:04:42,829 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 18:04:44,906 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 [] [2023-08-29 18:04:46,566 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.66s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-08-29 18:04:48,171 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.60s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-08-29 18:04:49,058 INFO L130 PetriNetUnfolder]: 1786/4213 cut-off events. [2023-08-29 18:04:49,058 INFO L131 PetriNetUnfolder]: For 730/782 co-relation queries the response was YES. [2023-08-29 18:04:49,071 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. [2023-08-29 18:04:49,089 INFO L137 encePairwiseOnDemand]: 541/553 looper letters, 132 selfloop transitions, 31 changer transitions 0/195 dead transitions. [2023-08-29 18:04:49,090 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 195 transitions, 1046 flow [2023-08-29 18:04:49,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-29 18:04:49,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-29 18:04:49,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1486 transitions. [2023-08-29 18:04:49,095 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4478601567209162 [2023-08-29 18:04:49,095 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1486 transitions. [2023-08-29 18:04:49,095 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1486 transitions. [2023-08-29 18:04:49,096 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 18:04:49,096 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1486 transitions. [2023-08-29 18:04:49,099 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) [2023-08-29 18:04:49,103 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) [2023-08-29 18:04:49,104 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) [2023-08-29 18:04:49,104 INFO L175 Difference]: Start difference. First operand has 111 places, 106 transitions, 452 flow. Second operand 6 states and 1486 transitions. [2023-08-29 18:04:49,104 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 195 transitions, 1046 flow [2023-08-29 18:04:49,109 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 195 transitions, 998 flow, removed 19 selfloop flow, removed 5 redundant places. [2023-08-29 18:04:49,111 INFO L231 Difference]: Finished difference. Result has 116 places, 136 transitions, 662 flow [2023-08-29 18:04:49,112 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} [2023-08-29 18:04:49,112 INFO L281 CegarLoopForPetriNet]: 84 programPoint places, 32 predicate places. [2023-08-29 18:04:49,112 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 136 transitions, 662 flow [2023-08-29 18:04:49,113 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) [2023-08-29 18:04:49,113 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 18:04:49,113 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] [2023-08-29 18:04:49,126 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-29 18:04:49,323 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 [2023-08-29 18:04:49,323 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting fErr1ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2023-08-29 18:04:49,324 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 18:04:49,324 INFO L85 PathProgramCache]: Analyzing trace with hash 1008037599, now seen corresponding path program 1 times [2023-08-29 18:04:49,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 18:04:49,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [286922129] [2023-08-29 18:04:49,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 18:04:49,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 18:04:49,749 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-29 18:04:49,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1514649431] [2023-08-29 18:04:49,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 18:04:49,750 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 18:04:49,750 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 18:04:49,751 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) [2023-08-29 18:04:49,761 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-29 18:04:52,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 18:04:52,552 INFO L263 TraceCheckSpWp]: Trace formula consists of 9633 conjuncts, 12 conjunts are in the unsatisfiable core [2023-08-29 18:04:52,558 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 18:04:52,662 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 1 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 18:04:52,662 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 18:04:52,837 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 1 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 18:04:52,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 18:04:52,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [286922129] [2023-08-29 18:04:52,837 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-29 18:04:52,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1514649431] [2023-08-29 18:04:52,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1514649431] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-29 18:04:52,837 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-29 18:04:52,837 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2023-08-29 18:04:52,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080172876] [2023-08-29 18:04:52,837 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-29 18:04:52,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-08-29 18:04:52,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 18:04:52,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-08-29 18:04:52,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2023-08-29 18:04:52,900 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 276 out of 553 [2023-08-29 18:04:52,905 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) [2023-08-29 18:04:52,905 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 18:04:52,905 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 276 of 553 [2023-08-29 18:04:52,905 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 18:04:53,964 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-08-29 18:04:55,469 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.50s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-08-29 18:04:57,065 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.59s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-08-29 18:04:59,046 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.98s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-08-29 18:05:00,898 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.85s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-08-29 18:05:02,629 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.73s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-08-29 18:05:04,389 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.76s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-08-29 18:05:05,838 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.45s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-08-29 18:05:07,060 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-08-29 18:05:09,069 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-08-29 18:05:10,938 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.87s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-08-29 18:05:12,949 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-08-29 18:05:14,640 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.69s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-08-29 18:05:16,175 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.53s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-08-29 18:05:17,865 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.69s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-08-29 18:05:19,875 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-08-29 18:05:21,646 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.77s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-08-29 18:05:22,975 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-08-29 18:05:25,111 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-08-29 18:05:26,386 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-08-29 18:05:28,051 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.66s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-08-29 18:05:31,812 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.91s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-08-29 18:05:32,471 INFO L130 PetriNetUnfolder]: 1165/3440 cut-off events. [2023-08-29 18:05:32,472 INFO L131 PetriNetUnfolder]: For 2303/2385 co-relation queries the response was YES. [2023-08-29 18:05:32,486 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. [2023-08-29 18:05:32,504 INFO L137 encePairwiseOnDemand]: 550/553 looper letters, 45 selfloop transitions, 23 changer transitions 0/148 dead transitions. [2023-08-29 18:05:32,504 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 148 transitions, 870 flow [2023-08-29 18:05:32,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-08-29 18:05:32,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-08-29 18:05:32,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 6690 transitions. [2023-08-29 18:05:32,525 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5040687160940326 [2023-08-29 18:05:32,525 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 6690 transitions. [2023-08-29 18:05:32,525 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 6690 transitions. [2023-08-29 18:05:32,531 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 18:05:32,531 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 6690 transitions. [2023-08-29 18:05:32,553 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) [2023-08-29 18:05:32,575 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) [2023-08-29 18:05:32,578 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) [2023-08-29 18:05:32,578 INFO L175 Difference]: Start difference. First operand has 116 places, 136 transitions, 662 flow. Second operand 24 states and 6690 transitions. [2023-08-29 18:05:32,578 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 148 transitions, 870 flow [2023-08-29 18:05:32,584 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 148 transitions, 870 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-29 18:05:32,587 INFO L231 Difference]: Finished difference. Result has 151 places, 148 transitions, 854 flow [2023-08-29 18:05:32,587 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} [2023-08-29 18:05:32,589 INFO L281 CegarLoopForPetriNet]: 84 programPoint places, 67 predicate places. [2023-08-29 18:05:32,589 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 148 transitions, 854 flow [2023-08-29 18:05:32,591 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) [2023-08-29 18:05:32,591 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 18:05:32,591 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] [2023-08-29 18:05:32,625 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-29 18:05:32,810 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 [2023-08-29 18:05:32,811 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting fErr1ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2023-08-29 18:05:32,811 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 18:05:32,811 INFO L85 PathProgramCache]: Analyzing trace with hash 873237087, now seen corresponding path program 2 times [2023-08-29 18:05:32,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 18:05:32,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129433003] [2023-08-29 18:05:32,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 18:05:32,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 18:05:33,567 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-29 18:05:33,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [185804363] [2023-08-29 18:05:33,567 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-29 18:05:33,567 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 18:05:33,568 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 18:05:33,579 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) [2023-08-29 18:05:33,584 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-29 18:05:36,553 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-29 18:05:36,554 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-29 18:05:36,563 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 17 conjunts are in the unsatisfiable core [2023-08-29 18:05:36,580 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 18:05:36,589 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 [2023-08-29 18:05:36,597 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 [2023-08-29 18:05:36,612 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-29 18:05:36,613 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 [2023-08-29 18:05:36,639 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-29 18:05:36,639 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 [2023-08-29 18:05:36,662 INFO L134 CoverageAnalysis]: Checked inductivity of 254 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 254 trivial. 0 not checked. [2023-08-29 18:05:36,662 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 18:05:36,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 18:05:36,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129433003] [2023-08-29 18:05:36,663 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-29 18:05:36,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [185804363] [2023-08-29 18:05:36,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [185804363] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 18:05:36,663 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 18:05:36,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-29 18:05:36,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790641343] [2023-08-29 18:05:36,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 18:05:36,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-29 18:05:36,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 18:05:36,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-29 18:05:36,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-29 18:05:37,147 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 227 out of 553 [2023-08-29 18:05:37,148 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) [2023-08-29 18:05:37,148 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 18:05:37,148 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 227 of 553 [2023-08-29 18:05:37,148 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 18:05:39,855 INFO L130 PetriNetUnfolder]: 2511/5418 cut-off events. [2023-08-29 18:05:39,855 INFO L131 PetriNetUnfolder]: For 2574/2680 co-relation queries the response was YES. [2023-08-29 18:05:39,871 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. [2023-08-29 18:05:39,890 INFO L137 encePairwiseOnDemand]: 542/553 looper letters, 173 selfloop transitions, 55 changer transitions 0/262 dead transitions. [2023-08-29 18:05:39,891 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 262 transitions, 1790 flow [2023-08-29 18:05:39,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-29 18:05:39,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-29 18:05:39,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1486 transitions. [2023-08-29 18:05:39,895 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4478601567209162 [2023-08-29 18:05:39,895 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1486 transitions. [2023-08-29 18:05:39,895 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1486 transitions. [2023-08-29 18:05:39,896 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 18:05:39,896 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1486 transitions. [2023-08-29 18:05:39,898 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) [2023-08-29 18:05:39,901 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) [2023-08-29 18:05:39,902 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) [2023-08-29 18:05:39,902 INFO L175 Difference]: Start difference. First operand has 151 places, 148 transitions, 854 flow. Second operand 6 states and 1486 transitions. [2023-08-29 18:05:39,902 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 262 transitions, 1790 flow [2023-08-29 18:05:39,912 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 262 transitions, 1694 flow, removed 37 selfloop flow, removed 11 redundant places. [2023-08-29 18:05:39,915 INFO L231 Difference]: Finished difference. Result has 150 places, 197 transitions, 1312 flow [2023-08-29 18:05:39,915 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} [2023-08-29 18:05:39,916 INFO L281 CegarLoopForPetriNet]: 84 programPoint places, 66 predicate places. [2023-08-29 18:05:39,916 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 197 transitions, 1312 flow [2023-08-29 18:05:39,917 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) [2023-08-29 18:05:39,917 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 18:05:39,917 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] [2023-08-29 18:05:39,936 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-08-29 18:05:40,133 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 [2023-08-29 18:05:40,133 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting gErr1ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2023-08-29 18:05:40,134 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 18:05:40,134 INFO L85 PathProgramCache]: Analyzing trace with hash 1930825631, now seen corresponding path program 1 times [2023-08-29 18:05:40,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 18:05:40,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160812778] [2023-08-29 18:05:40,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 18:05:40,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 18:05:40,940 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-29 18:05:40,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [975229878] [2023-08-29 18:05:40,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 18:05:40,941 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 18:05:40,941 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 18:05:40,945 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) [2023-08-29 18:05:40,953 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-29 18:05:47,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 18:05:47,245 INFO L263 TraceCheckSpWp]: Trace formula consists of 20975 conjuncts, 24 conjunts are in the unsatisfiable core [2023-08-29 18:05:47,253 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 18:05:47,541 INFO L134 CoverageAnalysis]: Checked inductivity of 254 backedges. 1 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 18:05:47,541 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 18:05:47,950 INFO L134 CoverageAnalysis]: Checked inductivity of 254 backedges. 1 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 18:05:47,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 18:05:47,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160812778] [2023-08-29 18:05:47,950 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-29 18:05:47,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [975229878] [2023-08-29 18:05:47,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [975229878] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-29 18:05:47,950 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-29 18:05:47,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 32 [2023-08-29 18:05:47,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219737205] [2023-08-29 18:05:47,951 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-29 18:05:47,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-08-29 18:05:47,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 18:05:47,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-08-29 18:05:47,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2023-08-29 18:05:48,026 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 276 out of 553 [2023-08-29 18:05:48,031 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) [2023-08-29 18:05:48,031 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 18:05:48,031 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 276 of 553 [2023-08-29 18:05:48,031 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 18:05:49,410 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.34s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-08-29 18:05:50,745 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-08-29 18:05:51,747 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.00s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-08-29 18:05:52,939 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-08-29 18:05:54,297 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.36s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-08-29 18:05:55,316 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-08-29 18:05:57,473 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-08-29 18:05:59,483 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-08-29 18:06:01,496 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-08-29 18:06:02,639 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-08-29 18:06:04,649 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-08-29 18:06:06,481 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.83s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-08-29 18:06:08,073 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.59s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-08-29 18:06:10,001 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.93s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-08-29 18:06:11,054 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-08-29 18:06:13,064 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-08-29 18:06:14,518 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.45s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-08-29 18:06:16,601 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-08-29 18:06:18,073 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.47s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-08-29 18:06:19,260 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-08-29 18:06:21,272 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-08-29 18:06:24,101 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-08-29 18:06:26,636 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.58s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-08-29 18:06:27,948 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.31s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-08-29 18:06:29,960 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-08-29 18:06:31,522 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.56s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-08-29 18:06:33,537 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-08-29 18:06:34,724 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-08-29 18:06:37,356 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-08-29 18:06:39,364 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-08-29 18:06:41,100 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 [] [2023-08-29 18:06:41,682 INFO L130 PetriNetUnfolder]: 1479/4182 cut-off events. [2023-08-29 18:06:41,682 INFO L131 PetriNetUnfolder]: For 7397/7497 co-relation queries the response was YES. [2023-08-29 18:06:41,699 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. [2023-08-29 18:06:41,713 INFO L137 encePairwiseOnDemand]: 550/553 looper letters, 50 selfloop transitions, 31 changer transitions 0/205 dead transitions. [2023-08-29 18:06:41,713 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 205 transitions, 1522 flow [2023-08-29 18:06:41,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-08-29 18:06:41,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2023-08-29 18:06:41,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 8902 transitions. [2023-08-29 18:06:41,731 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5030515370705244 [2023-08-29 18:06:41,731 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 8902 transitions. [2023-08-29 18:06:41,731 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 8902 transitions. [2023-08-29 18:06:41,735 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 18:06:41,736 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 8902 transitions. [2023-08-29 18:06:41,749 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) [2023-08-29 18:06:41,771 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) [2023-08-29 18:06:41,775 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) [2023-08-29 18:06:41,776 INFO L175 Difference]: Start difference. First operand has 150 places, 197 transitions, 1312 flow. Second operand 32 states and 8902 transitions. [2023-08-29 18:06:41,776 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 205 transitions, 1522 flow [2023-08-29 18:06:41,791 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 205 transitions, 1522 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-29 18:06:41,794 INFO L231 Difference]: Finished difference. Result has 189 places, 205 transitions, 1472 flow [2023-08-29 18:06:41,795 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} [2023-08-29 18:06:41,796 INFO L281 CegarLoopForPetriNet]: 84 programPoint places, 105 predicate places. [2023-08-29 18:06:41,796 INFO L495 AbstractCegarLoop]: Abstraction has has 189 places, 205 transitions, 1472 flow [2023-08-29 18:06:41,799 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) [2023-08-29 18:06:41,799 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 18:06:41,799 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] [2023-08-29 18:06:41,883 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-08-29 18:06:42,015 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 [2023-08-29 18:06:42,015 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting gErr1ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2023-08-29 18:06:42,016 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 18:06:42,016 INFO L85 PathProgramCache]: Analyzing trace with hash 2058308767, now seen corresponding path program 2 times [2023-08-29 18:06:42,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 18:06:42,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [936677225] [2023-08-29 18:06:42,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 18:06:42,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 18:06:43,167 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-29 18:06:43,167 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1285972701] [2023-08-29 18:06:43,168 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-29 18:06:43,168 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 18:06:43,168 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 18:06:43,169 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) [2023-08-29 18:06:43,197 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-29 18:06:48,669 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-29 18:06:48,670 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-29 18:06:48,685 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 17 conjunts are in the unsatisfiable core [2023-08-29 18:06:48,690 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 18:06:48,699 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 [2023-08-29 18:06:48,709 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 [2023-08-29 18:06:48,727 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-29 18:06:48,727 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 [2023-08-29 18:06:48,761 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-29 18:06:48,762 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 [2023-08-29 18:06:48,784 INFO L134 CoverageAnalysis]: Checked inductivity of 466 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 466 trivial. 0 not checked. [2023-08-29 18:06:48,784 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 18:06:48,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 18:06:48,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [936677225] [2023-08-29 18:06:48,784 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-29 18:06:48,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1285972701] [2023-08-29 18:06:48,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1285972701] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 18:06:48,785 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 18:06:48,785 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-29 18:06:48,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382346586] [2023-08-29 18:06:48,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 18:06:48,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-29 18:06:48,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 18:06:48,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-29 18:06:48,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-29 18:06:49,227 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 227 out of 553 [2023-08-29 18:06:49,228 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) [2023-08-29 18:06:49,228 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 18:06:49,228 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 227 of 553 [2023-08-29 18:06:49,228 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 18:06:51,281 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 [] [2023-08-29 18:06:52,582 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.30s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-08-29 18:06:53,570 INFO L130 PetriNetUnfolder]: 2752/6005 cut-off events. [2023-08-29 18:06:53,570 INFO L131 PetriNetUnfolder]: For 6372/6498 co-relation queries the response was YES. [2023-08-29 18:06:53,595 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. [2023-08-29 18:06:53,616 INFO L137 encePairwiseOnDemand]: 542/553 looper letters, 209 selfloop transitions, 79 changer transitions 0/327 dead transitions. [2023-08-29 18:06:53,617 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 327 transitions, 2732 flow [2023-08-29 18:06:53,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-29 18:06:53,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-29 18:06:53,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1477 transitions. [2023-08-29 18:06:53,622 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4451476793248945 [2023-08-29 18:06:53,622 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1477 transitions. [2023-08-29 18:06:53,622 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1477 transitions. [2023-08-29 18:06:53,623 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 18:06:53,623 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1477 transitions. [2023-08-29 18:06:53,626 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) [2023-08-29 18:06:53,629 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) [2023-08-29 18:06:53,630 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) [2023-08-29 18:06:53,630 INFO L175 Difference]: Start difference. First operand has 189 places, 205 transitions, 1472 flow. Second operand 6 states and 1477 transitions. [2023-08-29 18:06:53,630 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 327 transitions, 2732 flow [2023-08-29 18:06:53,655 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 327 transitions, 2636 flow, removed 25 selfloop flow, removed 23 redundant places. [2023-08-29 18:06:53,661 INFO L231 Difference]: Finished difference. Result has 176 places, 270 transitions, 2274 flow [2023-08-29 18:06:53,661 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} [2023-08-29 18:06:53,662 INFO L281 CegarLoopForPetriNet]: 84 programPoint places, 92 predicate places. [2023-08-29 18:06:53,662 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 270 transitions, 2274 flow [2023-08-29 18:06:53,663 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) [2023-08-29 18:06:53,663 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 18:06:53,663 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] [2023-08-29 18:06:53,701 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-08-29 18:06:53,889 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 [2023-08-29 18:06:53,889 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting fErr2ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2023-08-29 18:06:53,889 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 18:06:53,889 INFO L85 PathProgramCache]: Analyzing trace with hash 1789177663, now seen corresponding path program 1 times [2023-08-29 18:06:53,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 18:06:53,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368180851] [2023-08-29 18:06:53,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 18:06:53,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 18:06:54,928 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-29 18:06:54,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1248588792] [2023-08-29 18:06:54,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 18:06:54,928 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 18:06:54,929 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 18:06:54,933 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) [2023-08-29 18:06:54,934 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-08-29 18:07:04,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 18:07:04,973 INFO L263 TraceCheckSpWp]: Trace formula consists of 28531 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-29 18:07:04,985 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 18:07:05,036 INFO L134 CoverageAnalysis]: Checked inductivity of 466 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 465 trivial. 0 not checked. [2023-08-29 18:07:05,036 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 18:07:05,095 INFO L134 CoverageAnalysis]: Checked inductivity of 466 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 465 trivial. 0 not checked. [2023-08-29 18:07:05,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 18:07:05,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368180851] [2023-08-29 18:07:05,096 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-29 18:07:05,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1248588792] [2023-08-29 18:07:05,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1248588792] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-29 18:07:05,096 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-29 18:07:05,096 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2023-08-29 18:07:05,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379723135] [2023-08-29 18:07:05,097 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-29 18:07:05,097 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-29 18:07:05,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 18:07:05,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-29 18:07:05,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-29 18:07:05,127 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 276 out of 553 [2023-08-29 18:07:05,128 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) [2023-08-29 18:07:05,128 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 18:07:05,128 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 276 of 553 [2023-08-29 18:07:05,128 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 18:07:07,029 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 [] [2023-08-29 18:07:08,690 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.61s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-08-29 18:07:09,902 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-08-29 18:07:11,963 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 [] [2023-08-29 18:07:12,775 INFO L130 PetriNetUnfolder]: 1823/4979 cut-off events. [2023-08-29 18:07:12,775 INFO L131 PetriNetUnfolder]: For 9363/9503 co-relation queries the response was YES. [2023-08-29 18:07:12,799 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. [2023-08-29 18:07:12,816 INFO L137 encePairwiseOnDemand]: 549/553 looper letters, 199 selfloop transitions, 6 changer transitions 0/369 dead transitions. [2023-08-29 18:07:12,816 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 369 transitions, 3207 flow [2023-08-29 18:07:12,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-29 18:07:12,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-29 18:07:12,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1701 transitions. [2023-08-29 18:07:12,819 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5126582278481012 [2023-08-29 18:07:12,819 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1701 transitions. [2023-08-29 18:07:12,819 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1701 transitions. [2023-08-29 18:07:12,819 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 18:07:12,819 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1701 transitions. [2023-08-29 18:07:12,821 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) [2023-08-29 18:07:12,824 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) [2023-08-29 18:07:12,824 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) [2023-08-29 18:07:12,824 INFO L175 Difference]: Start difference. First operand has 176 places, 270 transitions, 2274 flow. Second operand 6 states and 1701 transitions. [2023-08-29 18:07:12,824 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 369 transitions, 3207 flow [2023-08-29 18:07:12,856 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 369 transitions, 3207 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-29 18:07:12,860 INFO L231 Difference]: Finished difference. Result has 185 places, 273 transitions, 2437 flow [2023-08-29 18:07:12,861 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} [2023-08-29 18:07:12,861 INFO L281 CegarLoopForPetriNet]: 84 programPoint places, 101 predicate places. [2023-08-29 18:07:12,862 INFO L495 AbstractCegarLoop]: Abstraction has has 185 places, 273 transitions, 2437 flow [2023-08-29 18:07:12,862 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) [2023-08-29 18:07:12,862 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 18:07:12,862 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] [2023-08-29 18:07:12,972 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-08-29 18:07:13,085 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 [2023-08-29 18:07:13,085 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting fErr2ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2023-08-29 18:07:13,085 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 18:07:13,085 INFO L85 PathProgramCache]: Analyzing trace with hash 1440688167, now seen corresponding path program 2 times [2023-08-29 18:07:13,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 18:07:13,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251209734] [2023-08-29 18:07:13,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 18:07:13,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 18:07:17,124 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-29 18:07:17,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1055950896] [2023-08-29 18:07:17,124 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-29 18:07:17,128 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 18:07:17,128 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 18:07:17,129 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) [2023-08-29 18:07:17,130 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-08-29 18:07:32,455 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-29 18:07:32,456 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-29 18:07:32,514 INFO L263 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 17 conjunts are in the unsatisfiable core [2023-08-29 18:07:32,527 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 18:07:32,541 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 [2023-08-29 18:07:32,551 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 [2023-08-29 18:07:32,566 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-29 18:07:32,566 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 [2023-08-29 18:07:32,585 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-29 18:07:32,585 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 [2023-08-29 18:07:32,604 INFO L134 CoverageAnalysis]: Checked inductivity of 7636 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7636 trivial. 0 not checked. [2023-08-29 18:07:32,604 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 18:07:32,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 18:07:32,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1251209734] [2023-08-29 18:07:32,605 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-29 18:07:32,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1055950896] [2023-08-29 18:07:32,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1055950896] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 18:07:32,605 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 18:07:32,605 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-29 18:07:32,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568269871] [2023-08-29 18:07:32,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 18:07:32,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-29 18:07:32,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 18:07:32,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-29 18:07:32,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-29 18:07:33,057 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 205 out of 553 [2023-08-29 18:07:33,058 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) [2023-08-29 18:07:33,058 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 18:07:33,058 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 205 of 553 [2023-08-29 18:07:33,058 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 18:07:34,527 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 [] [2023-08-29 18:07:37,754 INFO L130 PetriNetUnfolder]: 6070/10448 cut-off events. [2023-08-29 18:07:37,755 INFO L131 PetriNetUnfolder]: For 14983/15209 co-relation queries the response was YES. [2023-08-29 18:07:37,801 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. [2023-08-29 18:07:37,836 INFO L137 encePairwiseOnDemand]: 530/553 looper letters, 284 selfloop transitions, 125 changer transitions 0/421 dead transitions. [2023-08-29 18:07:37,836 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 421 transitions, 3903 flow [2023-08-29 18:07:37,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-29 18:07:37,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-29 18:07:37,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1417 transitions. [2023-08-29 18:07:37,839 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42706449668474983 [2023-08-29 18:07:37,839 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1417 transitions. [2023-08-29 18:07:37,839 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1417 transitions. [2023-08-29 18:07:37,839 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 18:07:37,839 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1417 transitions. [2023-08-29 18:07:37,841 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) [2023-08-29 18:07:37,844 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) [2023-08-29 18:07:37,844 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) [2023-08-29 18:07:37,844 INFO L175 Difference]: Start difference. First operand has 185 places, 273 transitions, 2437 flow. Second operand 6 states and 1417 transitions. [2023-08-29 18:07:37,845 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 421 transitions, 3903 flow [2023-08-29 18:07:37,895 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 421 transitions, 3895 flow, removed 3 selfloop flow, removed 1 redundant places. [2023-08-29 18:07:37,901 INFO L231 Difference]: Finished difference. Result has 194 places, 359 transitions, 3457 flow [2023-08-29 18:07:37,902 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} [2023-08-29 18:07:37,903 INFO L281 CegarLoopForPetriNet]: 84 programPoint places, 110 predicate places. [2023-08-29 18:07:37,903 INFO L495 AbstractCegarLoop]: Abstraction has has 194 places, 359 transitions, 3457 flow [2023-08-29 18:07:37,903 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) [2023-08-29 18:07:37,903 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 18:07:37,903 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] [2023-08-29 18:07:37,983 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-08-29 18:07:38,113 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 [2023-08-29 18:07:38,113 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting gErr2ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2023-08-29 18:07:38,113 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 18:07:38,113 INFO L85 PathProgramCache]: Analyzing trace with hash 1049862508, now seen corresponding path program 1 times [2023-08-29 18:07:38,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 18:07:38,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [406977288] [2023-08-29 18:07:38,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 18:07:38,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 18:07:42,799 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-29 18:07:42,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [216463834] [2023-08-29 18:07:42,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 18:07:42,799 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 18:07:42,800 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 18:07:42,801 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) [2023-08-29 18:07:42,801 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-08-29 18:08:20,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 18:08:21,556 INFO L263 TraceCheckSpWp]: Trace formula consists of 113595 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-29 18:08:21,620 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 18:08:21,809 INFO L134 CoverageAnalysis]: Checked inductivity of 7636 backedges. 0 proven. 5776 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2023-08-29 18:08:21,809 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 18:08:22,253 INFO L134 CoverageAnalysis]: Checked inductivity of 7636 backedges. 0 proven. 5776 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2023-08-29 18:08:22,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 18:08:22,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [406977288] [2023-08-29 18:08:22,254 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-29 18:08:22,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [216463834] [2023-08-29 18:08:22,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [216463834] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-29 18:08:22,254 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-29 18:08:22,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2023-08-29 18:08:22,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054171107] [2023-08-29 18:08:22,254 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-29 18:08:22,255 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-29 18:08:22,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 18:08:22,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-29 18:08:22,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2023-08-29 18:08:22,307 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 276 out of 553 [2023-08-29 18:08:22,309 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) [2023-08-29 18:08:22,310 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 18:08:22,310 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 276 of 553 [2023-08-29 18:08:22,310 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 18:08:23,769 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.42s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-08-29 18:08:25,409 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.59s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-08-29 18:08:28,119 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.62s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-08-29 18:08:29,928 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.75s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-08-29 18:08:31,984 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