./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_87-lists_racefree.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows 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/28-race_reach_87-lists_racefree.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-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 ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 54b86d528cae3f36fe49030118864df9a90bfa303271cb05b13ff89a15d513aa --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-30 10:35:47,043 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 10:35:47,046 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 10:35:47,081 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 10:35:47,083 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 10:35:47,086 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 10:35:47,088 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 10:35:47,091 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 10:35:47,093 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 10:35:47,097 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 10:35:47,098 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 10:35:47,100 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 10:35:47,101 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 10:35:47,103 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 10:35:47,104 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 10:35:47,108 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 10:35:47,110 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 10:35:47,114 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 10:35:47,115 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 10:35:47,117 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 10:35:47,121 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 10:35:47,122 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 10:35:47,123 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 10:35:47,123 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 10:35:47,126 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 10:35:47,129 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 10:35:47,129 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 10:35:47,130 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 10:35:47,131 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 10:35:47,132 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 10:35:47,133 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 10:35:47,135 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 10:35:47,136 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 10:35:47,137 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 10:35:47,138 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 10:35:47,139 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 10:35:47,139 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 10:35:47,139 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 10:35:47,140 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 10:35:47,140 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 10:35:47,141 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 10:35:47,151 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-08-30 10:35:47,181 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 10:35:47,182 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 10:35:47,182 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 10:35:47,182 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 10:35:47,183 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 10:35:47,184 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 10:35:47,184 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 10:35:47,184 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 10:35:47,184 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 10:35:47,185 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 10:35:47,185 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 10:35:47,186 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 10:35:47,186 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 10:35:47,186 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 10:35:47,186 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 10:35:47,186 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 10:35:47,187 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 10:35:47,187 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 10:35:47,187 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-08-30 10:35:47,187 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 10:35:47,187 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 10:35:47,188 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 10:35:47,188 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 10:35:47,188 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 10:35:47,188 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 10:35:47,188 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 10:35:47,189 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 10:35:47,189 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 10:35:47,189 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 10:35:47,189 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 10:35:47,189 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 10:35:47,190 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 10:35:47,190 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 10:35:47,190 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 10:35:47,190 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 10:35:47,190 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 10:35:47,191 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 10:35:47,191 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 54b86d528cae3f36fe49030118864df9a90bfa303271cb05b13ff89a15d513aa Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-30 10:35:47,500 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 10:35:47,518 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 10:35:47,520 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 10:35:47,521 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 10:35:47,521 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 10:35:47,523 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_87-lists_racefree.i [2023-08-30 10:35:48,742 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 10:35:49,061 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 10:35:49,062 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_87-lists_racefree.i [2023-08-30 10:35:49,081 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/94631900a/d4c6163af9064d408f8416932f4af3d4/FLAG3263ec724 [2023-08-30 10:35:49,102 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/94631900a/d4c6163af9064d408f8416932f4af3d4 [2023-08-30 10:35:49,105 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 10:35:49,106 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 10:35:49,108 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 10:35:49,109 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 10:35:49,111 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 10:35:49,112 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 10:35:49" (1/1) ... [2023-08-30 10:35:49,119 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24a81530 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:35:49, skipping insertion in model container [2023-08-30 10:35:49,119 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 10:35:49" (1/1) ... [2023-08-30 10:35:49,126 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 10:35:49,183 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 10:35:49,552 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_87-lists_racefree.i[47038,47051] [2023-08-30 10:35:49,600 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 10:35:49,689 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 10:35:49,753 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_87-lists_racefree.i[47038,47051] [2023-08-30 10:35:49,761 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 10:35:49,818 INFO L208 MainTranslator]: Completed translation [2023-08-30 10:35:49,819 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:35:49 WrapperNode [2023-08-30 10:35:49,819 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 10:35:49,820 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 10:35:49,820 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 10:35:49,820 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 10:35:49,826 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:35:49" (1/1) ... [2023-08-30 10:35:49,865 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:35:49" (1/1) ... [2023-08-30 10:35:49,891 INFO L138 Inliner]: procedures = 278, calls = 60, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 242 [2023-08-30 10:35:49,891 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 10:35:49,892 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 10:35:49,892 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 10:35:49,892 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 10:35:49,900 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:35:49" (1/1) ... [2023-08-30 10:35:49,900 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:35:49" (1/1) ... [2023-08-30 10:35:49,903 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:35:49" (1/1) ... [2023-08-30 10:35:49,904 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:35:49" (1/1) ... [2023-08-30 10:35:49,918 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:35:49" (1/1) ... [2023-08-30 10:35:49,922 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:35:49" (1/1) ... [2023-08-30 10:35:49,925 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:35:49" (1/1) ... [2023-08-30 10:35:49,926 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:35:49" (1/1) ... [2023-08-30 10:35:49,930 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 10:35:49,931 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 10:35:49,931 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 10:35:49,932 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 10:35:49,932 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:35:49" (1/1) ... [2023-08-30 10:35:49,937 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 10:35:49,946 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:35:49,956 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) [2023-08-30 10:35:49,958 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 [2023-08-30 10:35:49,982 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 10:35:49,982 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-08-30 10:35:49,982 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2023-08-30 10:35:49,982 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2023-08-30 10:35:49,982 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 10:35:49,982 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 10:35:49,983 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2023-08-30 10:35:49,983 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2023-08-30 10:35:49,983 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 10:35:49,983 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-30 10:35:49,983 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-30 10:35:49,983 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 10:35:49,983 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-08-30 10:35:49,984 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 10:35:49,984 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 10:35:49,984 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 10:35:49,985 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-30 10:35:50,127 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 10:35:50,129 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 10:35:50,558 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 10:35:50,567 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 10:35:50,573 INFO L302 CfgBuilder]: Removed 16 assume(true) statements. [2023-08-30 10:35:50,577 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 10:35:50 BoogieIcfgContainer [2023-08-30 10:35:50,577 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 10:35:50,579 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 10:35:50,579 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 10:35:50,582 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 10:35:50,583 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 10:35:49" (1/3) ... [2023-08-30 10:35:50,584 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66ff2ace and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 10:35:50, skipping insertion in model container [2023-08-30 10:35:50,584 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:35:49" (2/3) ... [2023-08-30 10:35:50,584 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66ff2ace and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 10:35:50, skipping insertion in model container [2023-08-30 10:35:50,585 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 10:35:50" (3/3) ... [2023-08-30 10:35:50,586 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_87-lists_racefree.i [2023-08-30 10:35:50,593 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 10:35:50,601 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 10:35:50,602 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2023-08-30 10:35:50,602 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 10:35:50,751 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-08-30 10:35:50,796 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 236 places, 256 transitions, 534 flow [2023-08-30 10:35:50,971 INFO L130 PetriNetUnfolder]: 54/481 cut-off events. [2023-08-30 10:35:50,972 INFO L131 PetriNetUnfolder]: For 8/16 co-relation queries the response was YES. [2023-08-30 10:35:50,983 INFO L83 FinitePrefix]: Finished finitePrefix Result has 501 conditions, 481 events. 54/481 cut-off events. For 8/16 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1986 event pairs, 0 based on Foata normal form. 0/391 useless extension candidates. Maximal degree in co-relation 242. Up to 8 conditions per place. [2023-08-30 10:35:50,983 INFO L82 GeneralOperation]: Start removeDead. Operand has 236 places, 256 transitions, 534 flow [2023-08-30 10:35:50,994 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 235 places, 255 transitions, 530 flow [2023-08-30 10:35:50,998 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 10:35:51,017 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 235 places, 255 transitions, 530 flow [2023-08-30 10:35:51,025 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 235 places, 255 transitions, 530 flow [2023-08-30 10:35:51,025 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 235 places, 255 transitions, 530 flow [2023-08-30 10:35:51,100 INFO L130 PetriNetUnfolder]: 54/480 cut-off events. [2023-08-30 10:35:51,101 INFO L131 PetriNetUnfolder]: For 8/12 co-relation queries the response was YES. [2023-08-30 10:35:51,105 INFO L83 FinitePrefix]: Finished finitePrefix Result has 499 conditions, 480 events. 54/480 cut-off events. For 8/12 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1965 event pairs, 0 based on Foata normal form. 0/390 useless extension candidates. Maximal degree in co-relation 242. Up to 8 conditions per place. [2023-08-30 10:35:51,118 INFO L119 LiptonReduction]: Number of co-enabled transitions 20162 [2023-08-30 10:35:57,927 INFO L134 LiptonReduction]: Checked pairs total: 33578 [2023-08-30 10:35:57,928 INFO L136 LiptonReduction]: Total number of compositions: 216 [2023-08-30 10:35:57,939 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 10:35:57,944 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;@500015e0, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 10:35:57,945 INFO L358 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2023-08-30 10:35:57,947 INFO L130 PetriNetUnfolder]: 1/3 cut-off events. [2023-08-30 10:35:57,947 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 10:35:57,948 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:35:57,948 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-30 10:35:57,949 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-30 10:35:57,952 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:35:57,952 INFO L85 PathProgramCache]: Analyzing trace with hash 31839, now seen corresponding path program 1 times [2023-08-30 10:35:57,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:35:57,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787605418] [2023-08-30 10:35:57,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:35:57,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:35:58,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:35:58,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 10:35:58,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:35:58,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787605418] [2023-08-30 10:35:58,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1787605418] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:35:58,095 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:35:58,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 10:35:58,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61281391] [2023-08-30 10:35:58,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:35:58,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-30 10:35:58,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:35:58,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-30 10:35:58,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-30 10:35:58,128 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 232 out of 472 [2023-08-30 10:35:58,131 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 81 transitions, 182 flow. Second operand has 2 states, 2 states have (on average 233.0) internal successors, (466), 2 states have internal predecessors, (466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:35:58,131 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:35:58,131 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 232 of 472 [2023-08-30 10:35:58,132 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:35:58,885 INFO L130 PetriNetUnfolder]: 4409/7619 cut-off events. [2023-08-30 10:35:58,886 INFO L131 PetriNetUnfolder]: For 131/131 co-relation queries the response was YES. [2023-08-30 10:35:58,894 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14635 conditions, 7619 events. 4409/7619 cut-off events. For 131/131 co-relation queries the response was YES. Maximal size of possible extension queue 225. Compared 47871 event pairs, 4112 based on Foata normal form. 580/6244 useless extension candidates. Maximal degree in co-relation 12956. Up to 6919 conditions per place. [2023-08-30 10:35:58,926 INFO L137 encePairwiseOnDemand]: 460/472 looper letters, 60 selfloop transitions, 0 changer transitions 0/69 dead transitions. [2023-08-30 10:35:58,926 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 69 transitions, 278 flow [2023-08-30 10:35:58,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-30 10:35:58,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-30 10:35:58,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 536 transitions. [2023-08-30 10:35:58,944 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5677966101694916 [2023-08-30 10:35:58,945 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 536 transitions. [2023-08-30 10:35:58,945 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 536 transitions. [2023-08-30 10:35:58,948 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:35:58,951 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 536 transitions. [2023-08-30 10:35:58,954 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 268.0) internal successors, (536), 2 states have internal predecessors, (536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:35:58,961 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 472.0) internal successors, (1416), 3 states have internal predecessors, (1416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:35:58,962 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 472.0) internal successors, (1416), 3 states have internal predecessors, (1416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:35:58,963 INFO L175 Difference]: Start difference. First operand has 68 places, 81 transitions, 182 flow. Second operand 2 states and 536 transitions. [2023-08-30 10:35:58,964 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 69 transitions, 278 flow [2023-08-30 10:35:58,972 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 69 transitions, 275 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 10:35:58,974 INFO L231 Difference]: Finished difference. Result has 67 places, 69 transitions, 155 flow [2023-08-30 10:35:58,976 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=472, PETRI_DIFFERENCE_MINUEND_FLOW=155, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=155, PETRI_PLACES=67, PETRI_TRANSITIONS=69} [2023-08-30 10:35:58,979 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, -1 predicate places. [2023-08-30 10:35:58,980 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 69 transitions, 155 flow [2023-08-30 10:35:58,981 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 233.0) internal successors, (466), 2 states have internal predecessors, (466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:35:58,982 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:35:58,984 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-30 10:35:58,984 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 10:35:58,985 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-30 10:35:58,992 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:35:58,992 INFO L85 PathProgramCache]: Analyzing trace with hash 31840, now seen corresponding path program 1 times [2023-08-30 10:35:58,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:35:58,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751013684] [2023-08-30 10:35:58,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:35:58,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:35:59,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:35:59,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 10:35:59,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:35:59,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751013684] [2023-08-30 10:35:59,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [751013684] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:35:59,181 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:35:59,182 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 10:35:59,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397469748] [2023-08-30 10:35:59,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:35:59,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 10:35:59,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:35:59,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 10:35:59,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 10:35:59,196 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 228 out of 472 [2023-08-30 10:35:59,197 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 69 transitions, 155 flow. Second operand has 3 states, 3 states have (on average 228.66666666666666) internal successors, (686), 3 states have internal predecessors, (686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:35:59,198 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:35:59,198 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 228 of 472 [2023-08-30 10:35:59,198 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:35:59,936 INFO L130 PetriNetUnfolder]: 4409/7620 cut-off events. [2023-08-30 10:35:59,936 INFO L131 PetriNetUnfolder]: For 57/57 co-relation queries the response was YES. [2023-08-30 10:35:59,944 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14637 conditions, 7620 events. 4409/7620 cut-off events. For 57/57 co-relation queries the response was YES. Maximal size of possible extension queue 225. Compared 47808 event pairs, 4112 based on Foata normal form. 0/5665 useless extension candidates. Maximal degree in co-relation 14632. Up to 6919 conditions per place. [2023-08-30 10:35:59,996 INFO L137 encePairwiseOnDemand]: 468/472 looper letters, 59 selfloop transitions, 2 changer transitions 0/70 dead transitions. [2023-08-30 10:35:59,996 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 70 transitions, 279 flow [2023-08-30 10:35:59,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 10:35:59,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 10:35:59,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 747 transitions. [2023-08-30 10:35:59,999 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.527542372881356 [2023-08-30 10:35:59,999 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 747 transitions. [2023-08-30 10:35:59,999 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 747 transitions. [2023-08-30 10:36:00,000 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:36:00,000 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 747 transitions. [2023-08-30 10:36:00,002 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 249.0) internal successors, (747), 3 states have internal predecessors, (747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:36:00,005 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 472.0) internal successors, (1888), 4 states have internal predecessors, (1888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:36:00,006 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 472.0) internal successors, (1888), 4 states have internal predecessors, (1888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:36:00,006 INFO L175 Difference]: Start difference. First operand has 67 places, 69 transitions, 155 flow. Second operand 3 states and 747 transitions. [2023-08-30 10:36:00,006 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 70 transitions, 279 flow [2023-08-30 10:36:00,007 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 70 transitions, 279 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 10:36:00,009 INFO L231 Difference]: Finished difference. Result has 70 places, 70 transitions, 169 flow [2023-08-30 10:36:00,009 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=472, PETRI_DIFFERENCE_MINUEND_FLOW=155, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=169, PETRI_PLACES=70, PETRI_TRANSITIONS=70} [2023-08-30 10:36:00,010 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 2 predicate places. [2023-08-30 10:36:00,010 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 70 transitions, 169 flow [2023-08-30 10:36:00,011 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 228.66666666666666) internal successors, (686), 3 states have internal predecessors, (686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:36:00,011 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:36:00,011 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 10:36:00,011 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 10:36:00,011 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-30 10:36:00,012 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:36:00,012 INFO L85 PathProgramCache]: Analyzing trace with hash 987942, now seen corresponding path program 1 times [2023-08-30 10:36:00,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:36:00,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072318837] [2023-08-30 10:36:00,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:36:00,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:36:00,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:36:00,131 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 10:36:00,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:36:00,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1072318837] [2023-08-30 10:36:00,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1072318837] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:36:00,132 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:36:00,132 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 10:36:00,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303550125] [2023-08-30 10:36:00,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:36:00,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 10:36:00,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:36:00,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 10:36:00,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 10:36:00,148 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 228 out of 472 [2023-08-30 10:36:00,149 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 70 transitions, 169 flow. Second operand has 3 states, 3 states have (on average 229.0) internal successors, (687), 3 states have internal predecessors, (687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:36:00,150 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:36:00,150 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 228 of 472 [2023-08-30 10:36:00,150 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:36:00,845 INFO L130 PetriNetUnfolder]: 4409/7619 cut-off events. [2023-08-30 10:36:00,845 INFO L131 PetriNetUnfolder]: For 57/57 co-relation queries the response was YES. [2023-08-30 10:36:00,855 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14642 conditions, 7619 events. 4409/7619 cut-off events. For 57/57 co-relation queries the response was YES. Maximal size of possible extension queue 225. Compared 47843 event pairs, 4112 based on Foata normal form. 0/5665 useless extension candidates. Maximal degree in co-relation 14635. Up to 6918 conditions per place. [2023-08-30 10:36:00,882 INFO L137 encePairwiseOnDemand]: 470/472 looper letters, 59 selfloop transitions, 1 changer transitions 0/69 dead transitions. [2023-08-30 10:36:00,883 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 69 transitions, 285 flow [2023-08-30 10:36:00,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 10:36:00,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 10:36:00,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 744 transitions. [2023-08-30 10:36:00,885 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5254237288135594 [2023-08-30 10:36:00,885 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 744 transitions. [2023-08-30 10:36:00,886 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 744 transitions. [2023-08-30 10:36:00,886 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:36:00,886 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 744 transitions. [2023-08-30 10:36:00,888 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 248.0) internal successors, (744), 3 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:36:00,890 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 472.0) internal successors, (1888), 4 states have internal predecessors, (1888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:36:00,891 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 472.0) internal successors, (1888), 4 states have internal predecessors, (1888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:36:00,892 INFO L175 Difference]: Start difference. First operand has 70 places, 70 transitions, 169 flow. Second operand 3 states and 744 transitions. [2023-08-30 10:36:00,892 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 69 transitions, 285 flow [2023-08-30 10:36:00,893 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 69 transitions, 281 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-30 10:36:00,894 INFO L231 Difference]: Finished difference. Result has 70 places, 69 transitions, 163 flow [2023-08-30 10:36:00,894 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=472, PETRI_DIFFERENCE_MINUEND_FLOW=161, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=163, PETRI_PLACES=70, PETRI_TRANSITIONS=69} [2023-08-30 10:36:00,895 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 2 predicate places. [2023-08-30 10:36:00,895 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 69 transitions, 163 flow [2023-08-30 10:36:00,896 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 229.0) internal successors, (687), 3 states have internal predecessors, (687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:36:00,896 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:36:00,896 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-30 10:36:00,897 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-30 10:36:00,897 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-30 10:36:00,897 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:36:00,898 INFO L85 PathProgramCache]: Analyzing trace with hash -633406093, now seen corresponding path program 1 times [2023-08-30 10:36:00,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:36:00,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [833426400] [2023-08-30 10:36:00,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:36:00,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:36:00,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:36:00,952 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 10:36:00,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:36:00,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [833426400] [2023-08-30 10:36:00,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [833426400] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:36:00,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [240055521] [2023-08-30 10:36:00,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:36:00,953 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:36:00,953 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:36:00,957 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) [2023-08-30 10:36:01,005 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-30 10:36:01,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:36:01,110 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-30 10:36:01,113 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:36:01,140 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 10:36:01,140 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 10:36:01,154 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 10:36:01,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [240055521] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 10:36:01,155 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 10:36:01,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-30 10:36:01,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673913573] [2023-08-30 10:36:01,156 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 10:36:01,156 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 10:36:01,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:36:01,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 10:36:01,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-30 10:36:01,181 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 227 out of 472 [2023-08-30 10:36:01,184 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 69 transitions, 163 flow. Second operand has 7 states, 7 states have (on average 228.57142857142858) internal successors, (1600), 7 states have internal predecessors, (1600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:36:01,184 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:36:01,184 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 227 of 472 [2023-08-30 10:36:01,184 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:36:01,965 INFO L130 PetriNetUnfolder]: 4409/7622 cut-off events. [2023-08-30 10:36:01,965 INFO L131 PetriNetUnfolder]: For 57/57 co-relation queries the response was YES. [2023-08-30 10:36:01,977 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14650 conditions, 7622 events. 4409/7622 cut-off events. For 57/57 co-relation queries the response was YES. Maximal size of possible extension queue 225. Compared 47832 event pairs, 4112 based on Foata normal form. 0/5668 useless extension candidates. Maximal degree in co-relation 14643. Up to 6918 conditions per place. [2023-08-30 10:36:02,001 INFO L137 encePairwiseOnDemand]: 469/472 looper letters, 58 selfloop transitions, 5 changer transitions 0/72 dead transitions. [2023-08-30 10:36:02,001 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 72 transitions, 301 flow [2023-08-30 10:36:02,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 10:36:02,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 10:36:02,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1428 transitions. [2023-08-30 10:36:02,006 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5042372881355932 [2023-08-30 10:36:02,006 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1428 transitions. [2023-08-30 10:36:02,006 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1428 transitions. [2023-08-30 10:36:02,007 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:36:02,007 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1428 transitions. [2023-08-30 10:36:02,010 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 238.0) internal successors, (1428), 6 states have internal predecessors, (1428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:36:02,014 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 472.0) internal successors, (3304), 7 states have internal predecessors, (3304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:36:02,016 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 472.0) internal successors, (3304), 7 states have internal predecessors, (3304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:36:02,016 INFO L175 Difference]: Start difference. First operand has 70 places, 69 transitions, 163 flow. Second operand 6 states and 1428 transitions. [2023-08-30 10:36:02,016 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 72 transitions, 301 flow [2023-08-30 10:36:02,017 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 72 transitions, 300 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 10:36:02,019 INFO L231 Difference]: Finished difference. Result has 77 places, 72 transitions, 198 flow [2023-08-30 10:36:02,019 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=472, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=198, PETRI_PLACES=77, PETRI_TRANSITIONS=72} [2023-08-30 10:36:02,020 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 9 predicate places. [2023-08-30 10:36:02,020 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 72 transitions, 198 flow [2023-08-30 10:36:02,021 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 228.57142857142858) internal successors, (1600), 7 states have internal predecessors, (1600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:36:02,021 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:36:02,021 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1] [2023-08-30 10:36:02,030 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-08-30 10:36:02,227 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 [2023-08-30 10:36:02,227 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-30 10:36:02,228 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:36:02,228 INFO L85 PathProgramCache]: Analyzing trace with hash -1613799303, now seen corresponding path program 2 times [2023-08-30 10:36:02,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:36:02,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [347966887] [2023-08-30 10:36:02,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:36:02,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:36:02,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:36:02,327 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-30 10:36:02,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:36:02,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [347966887] [2023-08-30 10:36:02,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [347966887] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:36:02,328 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:36:02,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 10:36:02,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763211453] [2023-08-30 10:36:02,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:36:02,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 10:36:02,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:36:02,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 10:36:02,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 10:36:02,339 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 228 out of 472 [2023-08-30 10:36:02,340 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 72 transitions, 198 flow. Second operand has 3 states, 3 states have (on average 230.0) internal successors, (690), 3 states have internal predecessors, (690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:36:02,340 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:36:02,340 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 228 of 472 [2023-08-30 10:36:02,340 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:36:03,035 INFO L130 PetriNetUnfolder]: 4281/7257 cut-off events. [2023-08-30 10:36:03,035 INFO L131 PetriNetUnfolder]: For 55/55 co-relation queries the response was YES. [2023-08-30 10:36:03,047 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14058 conditions, 7257 events. 4281/7257 cut-off events. For 55/55 co-relation queries the response was YES. Maximal size of possible extension queue 224. Compared 44736 event pairs, 2286 based on Foata normal form. 0/5437 useless extension candidates. Maximal degree in co-relation 14048. Up to 6663 conditions per place. [2023-08-30 10:36:03,068 INFO L137 encePairwiseOnDemand]: 467/472 looper letters, 67 selfloop transitions, 2 changer transitions 1/79 dead transitions. [2023-08-30 10:36:03,068 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 79 transitions, 352 flow [2023-08-30 10:36:03,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 10:36:03,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 10:36:03,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 753 transitions. [2023-08-30 10:36:03,071 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5317796610169492 [2023-08-30 10:36:03,071 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 753 transitions. [2023-08-30 10:36:03,071 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 753 transitions. [2023-08-30 10:36:03,072 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:36:03,072 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 753 transitions. [2023-08-30 10:36:03,073 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 251.0) internal successors, (753), 3 states have internal predecessors, (753), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:36:03,076 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 472.0) internal successors, (1888), 4 states have internal predecessors, (1888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:36:03,077 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 472.0) internal successors, (1888), 4 states have internal predecessors, (1888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:36:03,077 INFO L175 Difference]: Start difference. First operand has 77 places, 72 transitions, 198 flow. Second operand 3 states and 753 transitions. [2023-08-30 10:36:03,077 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 79 transitions, 352 flow [2023-08-30 10:36:03,078 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 79 transitions, 338 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-08-30 10:36:03,080 INFO L231 Difference]: Finished difference. Result has 77 places, 70 transitions, 188 flow [2023-08-30 10:36:03,080 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=472, PETRI_DIFFERENCE_MINUEND_FLOW=180, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=188, PETRI_PLACES=77, PETRI_TRANSITIONS=70} [2023-08-30 10:36:03,081 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 9 predicate places. [2023-08-30 10:36:03,081 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 70 transitions, 188 flow [2023-08-30 10:36:03,081 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 230.0) internal successors, (690), 3 states have internal predecessors, (690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:36:03,082 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:36:03,082 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:36:03,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-30 10:36:03,082 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-30 10:36:03,083 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:36:03,083 INFO L85 PathProgramCache]: Analyzing trace with hash 1905568910, now seen corresponding path program 1 times [2023-08-30 10:36:03,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:36:03,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1136432661] [2023-08-30 10:36:03,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:36:03,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:36:03,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:36:03,174 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-30 10:36:03,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:36:03,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1136432661] [2023-08-30 10:36:03,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1136432661] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:36:03,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1850297672] [2023-08-30 10:36:03,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:36:03,175 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:36:03,176 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:36:03,177 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) [2023-08-30 10:36:03,205 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-30 10:36:03,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:36:03,340 INFO L263 TraceCheckSpWp]: Trace formula consists of 428 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 10:36:03,341 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:36:03,381 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 10:36:03,382 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 10:36:03,442 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 10:36:03,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1850297672] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 10:36:03,443 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 10:36:03,443 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 6] total 14 [2023-08-30 10:36:03,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770539449] [2023-08-30 10:36:03,444 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 10:36:03,444 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-30 10:36:03,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:36:03,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-30 10:36:03,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2023-08-30 10:36:03,513 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 224 out of 472 [2023-08-30 10:36:03,516 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 70 transitions, 188 flow. Second operand has 14 states, 14 states have (on average 225.85714285714286) internal successors, (3162), 14 states have internal predecessors, (3162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:36:03,516 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:36:03,517 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 224 of 472 [2023-08-30 10:36:03,517 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:36:03,619 INFO L130 PetriNetUnfolder]: 17/58 cut-off events. [2023-08-30 10:36:03,619 INFO L131 PetriNetUnfolder]: For 84/84 co-relation queries the response was YES. [2023-08-30 10:36:03,619 INFO L83 FinitePrefix]: Finished finitePrefix Result has 171 conditions, 58 events. 17/58 cut-off events. For 84/84 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 84 event pairs, 0 based on Foata normal form. 15/73 useless extension candidates. Maximal degree in co-relation 159. Up to 34 conditions per place. [2023-08-30 10:36:03,620 INFO L137 encePairwiseOnDemand]: 467/472 looper letters, 0 selfloop transitions, 0 changer transitions 34/34 dead transitions. [2023-08-30 10:36:03,620 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 34 transitions, 189 flow [2023-08-30 10:36:03,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-30 10:36:03,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-30 10:36:03,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 3176 transitions. [2023-08-30 10:36:03,627 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48062953995157387 [2023-08-30 10:36:03,627 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 3176 transitions. [2023-08-30 10:36:03,627 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 3176 transitions. [2023-08-30 10:36:03,629 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:36:03,629 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 3176 transitions. [2023-08-30 10:36:03,635 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 226.85714285714286) internal successors, (3176), 14 states have internal predecessors, (3176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:36:03,642 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 472.0) internal successors, (7080), 15 states have internal predecessors, (7080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:36:03,644 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 472.0) internal successors, (7080), 15 states have internal predecessors, (7080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:36:03,644 INFO L175 Difference]: Start difference. First operand has 77 places, 70 transitions, 188 flow. Second operand 14 states and 3176 transitions. [2023-08-30 10:36:03,644 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 34 transitions, 189 flow [2023-08-30 10:36:03,646 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 34 transitions, 183 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-30 10:36:03,646 INFO L231 Difference]: Finished difference. Result has 41 places, 0 transitions, 0 flow [2023-08-30 10:36:03,646 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=472, PETRI_DIFFERENCE_MINUEND_FLOW=63, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=0, PETRI_PLACES=41, PETRI_TRANSITIONS=0} [2023-08-30 10:36:03,647 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, -27 predicate places. [2023-08-30 10:36:03,647 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 0 transitions, 0 flow [2023-08-30 10:36:03,649 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 225.85714285714286) internal successors, (3162), 14 states have internal predecessors, (3162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:36:03,651 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 18 remaining) [2023-08-30 10:36:03,651 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 18 remaining) [2023-08-30 10:36:03,651 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 18 remaining) [2023-08-30 10:36:03,652 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 18 remaining) [2023-08-30 10:36:03,652 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 18 remaining) [2023-08-30 10:36:03,652 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 18 remaining) [2023-08-30 10:36:03,652 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 18 remaining) [2023-08-30 10:36:03,652 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 18 remaining) [2023-08-30 10:36:03,652 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 18 remaining) [2023-08-30 10:36:03,653 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 18 remaining) [2023-08-30 10:36:03,653 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 18 remaining) [2023-08-30 10:36:03,653 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 18 remaining) [2023-08-30 10:36:03,653 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 18 remaining) [2023-08-30 10:36:03,653 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 18 remaining) [2023-08-30 10:36:03,654 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 18 remaining) [2023-08-30 10:36:03,654 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 18 remaining) [2023-08-30 10:36:03,654 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 18 remaining) [2023-08-30 10:36:03,654 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 18 remaining) [2023-08-30 10:36:03,663 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-30 10:36:03,861 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-08-30 10:36:03,861 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1] [2023-08-30 10:36:03,863 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE (1/2) [2023-08-30 10:36:03,869 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 236 places, 256 transitions, 534 flow [2023-08-30 10:36:03,911 INFO L130 PetriNetUnfolder]: 54/481 cut-off events. [2023-08-30 10:36:03,911 INFO L131 PetriNetUnfolder]: For 8/16 co-relation queries the response was YES. [2023-08-30 10:36:03,914 INFO L83 FinitePrefix]: Finished finitePrefix Result has 501 conditions, 481 events. 54/481 cut-off events. For 8/16 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1986 event pairs, 0 based on Foata normal form. 0/391 useless extension candidates. Maximal degree in co-relation 242. Up to 8 conditions per place. [2023-08-30 10:36:03,914 INFO L82 GeneralOperation]: Start removeDead. Operand has 236 places, 256 transitions, 534 flow [2023-08-30 10:36:03,916 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 232 places, 250 transitions, 516 flow [2023-08-30 10:36:03,917 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 10:36:03,917 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 232 places, 250 transitions, 516 flow [2023-08-30 10:36:03,917 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 232 places, 250 transitions, 516 flow [2023-08-30 10:36:03,917 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 232 places, 250 transitions, 516 flow [2023-08-30 10:36:03,956 INFO L130 PetriNetUnfolder]: 50/457 cut-off events. [2023-08-30 10:36:03,956 INFO L131 PetriNetUnfolder]: For 4/8 co-relation queries the response was YES. [2023-08-30 10:36:03,959 INFO L83 FinitePrefix]: Finished finitePrefix Result has 473 conditions, 457 events. 50/457 cut-off events. For 4/8 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1827 event pairs, 0 based on Foata normal form. 0/375 useless extension candidates. Maximal degree in co-relation 220. Up to 8 conditions per place. [2023-08-30 10:36:03,970 INFO L119 LiptonReduction]: Number of co-enabled transitions 19060 [2023-08-30 10:36:09,635 INFO L134 LiptonReduction]: Checked pairs total: 30118 [2023-08-30 10:36:09,635 INFO L136 LiptonReduction]: Total number of compositions: 212 [2023-08-30 10:36:09,637 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-30 10:36:09,637 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;@500015e0, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 10:36:09,638 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-08-30 10:36:09,641 INFO L130 PetriNetUnfolder]: 1/23 cut-off events. [2023-08-30 10:36:09,641 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 10:36:09,642 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:36:09,642 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1] [2023-08-30 10:36:09,642 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-30 10:36:09,642 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:36:09,642 INFO L85 PathProgramCache]: Analyzing trace with hash 1873629703, now seen corresponding path program 1 times [2023-08-30 10:36:09,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:36:09,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200526733] [2023-08-30 10:36:09,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:36:09,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:36:09,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:36:09,670 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 10:36:09,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:36:09,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1200526733] [2023-08-30 10:36:09,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1200526733] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:36:09,671 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:36:09,671 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 10:36:09,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799252047] [2023-08-30 10:36:09,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:36:09,672 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 10:36:09,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:36:09,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 10:36:09,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 10:36:09,681 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 228 out of 468 [2023-08-30 10:36:09,682 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 74 transitions, 164 flow. Second operand has 3 states, 3 states have (on average 229.66666666666666) internal successors, (689), 3 states have internal predecessors, (689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:36:09,682 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:36:09,683 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 228 of 468 [2023-08-30 10:36:09,683 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:36:10,255 INFO L130 PetriNetUnfolder]: 4325/7405 cut-off events. [2023-08-30 10:36:10,256 INFO L131 PetriNetUnfolder]: For 111/111 co-relation queries the response was YES. [2023-08-30 10:36:10,265 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14247 conditions, 7405 events. 4325/7405 cut-off events. For 111/111 co-relation queries the response was YES. Maximal size of possible extension queue 222. Compared 45822 event pairs, 4048 based on Foata normal form. 580/6086 useless extension candidates. Maximal degree in co-relation 12610. Up to 6762 conditions per place. [2023-08-30 10:36:10,275 INFO L137 encePairwiseOnDemand]: 454/468 looper letters, 41 selfloop transitions, 2 changer transitions 13/64 dead transitions. [2023-08-30 10:36:10,275 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 64 transitions, 256 flow [2023-08-30 10:36:10,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 10:36:10,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 10:36:10,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 752 transitions. [2023-08-30 10:36:10,278 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5356125356125356 [2023-08-30 10:36:10,278 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 752 transitions. [2023-08-30 10:36:10,278 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 752 transitions. [2023-08-30 10:36:10,278 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:36:10,278 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 752 transitions. [2023-08-30 10:36:10,280 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 250.66666666666666) internal successors, (752), 3 states have internal predecessors, (752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:36:10,282 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 468.0) internal successors, (1872), 4 states have internal predecessors, (1872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:36:10,282 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 468.0) internal successors, (1872), 4 states have internal predecessors, (1872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:36:10,282 INFO L175 Difference]: Start difference. First operand has 63 places, 74 transitions, 164 flow. Second operand 3 states and 752 transitions. [2023-08-30 10:36:10,283 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 64 transitions, 256 flow [2023-08-30 10:36:10,285 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 64 transitions, 256 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 10:36:10,286 INFO L231 Difference]: Finished difference. Result has 66 places, 51 transitions, 122 flow [2023-08-30 10:36:10,286 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=468, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=122, PETRI_PLACES=66, PETRI_TRANSITIONS=51} [2023-08-30 10:36:10,287 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 3 predicate places. [2023-08-30 10:36:10,287 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 51 transitions, 122 flow [2023-08-30 10:36:10,288 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 229.66666666666666) internal successors, (689), 3 states have internal predecessors, (689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:36:10,288 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:36:10,288 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2023-08-30 10:36:10,288 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-30 10:36:10,288 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-30 10:36:10,289 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:36:10,289 INFO L85 PathProgramCache]: Analyzing trace with hash 24225327, now seen corresponding path program 1 times [2023-08-30 10:36:10,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:36:10,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140294196] [2023-08-30 10:36:10,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:36:10,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:36:10,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:36:10,358 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 10:36:10,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:36:10,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140294196] [2023-08-30 10:36:10,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1140294196] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:36:10,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [250211886] [2023-08-30 10:36:10,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:36:10,359 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:36:10,360 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:36:10,361 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) [2023-08-30 10:36:10,383 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-30 10:36:10,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:36:10,489 INFO L263 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-30 10:36:10,490 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:36:10,500 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 10:36:10,500 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 10:36:10,512 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 10:36:10,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [250211886] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 10:36:10,513 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 10:36:10,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-30 10:36:10,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521077027] [2023-08-30 10:36:10,513 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 10:36:10,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 10:36:10,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:36:10,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 10:36:10,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-30 10:36:10,535 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 227 out of 468 [2023-08-30 10:36:10,537 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 51 transitions, 122 flow. Second operand has 7 states, 7 states have (on average 228.57142857142858) internal successors, (1600), 7 states have internal predecessors, (1600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:36:10,537 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:36:10,538 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 227 of 468 [2023-08-30 10:36:10,538 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:36:10,868 INFO L130 PetriNetUnfolder]: 2169/3785 cut-off events. [2023-08-30 10:36:10,868 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2023-08-30 10:36:10,874 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7264 conditions, 3785 events. 2169/3785 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 21034 event pairs, 2048 based on Foata normal form. 0/2762 useless extension candidates. Maximal degree in co-relation 7251. Up to 3430 conditions per place. [2023-08-30 10:36:10,881 INFO L137 encePairwiseOnDemand]: 465/468 looper letters, 41 selfloop transitions, 5 changer transitions 0/54 dead transitions. [2023-08-30 10:36:10,882 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 54 transitions, 226 flow [2023-08-30 10:36:10,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 10:36:10,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 10:36:10,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1411 transitions. [2023-08-30 10:36:10,887 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5024928774928775 [2023-08-30 10:36:10,887 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1411 transitions. [2023-08-30 10:36:10,887 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1411 transitions. [2023-08-30 10:36:10,888 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:36:10,888 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1411 transitions. [2023-08-30 10:36:10,891 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 235.16666666666666) internal successors, (1411), 6 states have internal predecessors, (1411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:36:10,895 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 468.0) internal successors, (3276), 7 states have internal predecessors, (3276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:36:10,896 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 468.0) internal successors, (3276), 7 states have internal predecessors, (3276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:36:10,897 INFO L175 Difference]: Start difference. First operand has 66 places, 51 transitions, 122 flow. Second operand 6 states and 1411 transitions. [2023-08-30 10:36:10,897 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 54 transitions, 226 flow [2023-08-30 10:36:10,897 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 54 transitions, 222 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-30 10:36:10,899 INFO L231 Difference]: Finished difference. Result has 62 places, 54 transitions, 154 flow [2023-08-30 10:36:10,899 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=468, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=154, PETRI_PLACES=62, PETRI_TRANSITIONS=54} [2023-08-30 10:36:10,901 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, -1 predicate places. [2023-08-30 10:36:10,901 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 54 transitions, 154 flow [2023-08-30 10:36:10,902 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 228.57142857142858) internal successors, (1600), 7 states have internal predecessors, (1600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:36:10,902 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:36:10,903 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1] [2023-08-30 10:36:10,911 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-30 10:36:11,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:36:11,112 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-30 10:36:11,112 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:36:11,112 INFO L85 PathProgramCache]: Analyzing trace with hash -399172601, now seen corresponding path program 2 times [2023-08-30 10:36:11,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:36:11,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [677831602] [2023-08-30 10:36:11,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:36:11,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:36:11,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:36:11,260 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 10:36:11,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:36:11,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [677831602] [2023-08-30 10:36:11,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [677831602] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:36:11,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [686860335] [2023-08-30 10:36:11,261 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 10:36:11,261 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:36:11,262 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:36:11,263 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) [2023-08-30 10:36:11,265 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-30 10:36:11,418 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 10:36:11,419 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 10:36:11,421 INFO L263 TraceCheckSpWp]: Trace formula consists of 405 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 10:36:11,422 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:36:11,437 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 10:36:11,438 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 10:36:11,493 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 10:36:11,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [686860335] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 10:36:11,494 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 10:36:11,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-08-30 10:36:11,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19144508] [2023-08-30 10:36:11,495 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 10:36:11,495 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-30 10:36:11,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:36:11,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-30 10:36:11,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-08-30 10:36:11,541 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 227 out of 468 [2023-08-30 10:36:11,545 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 54 transitions, 154 flow. Second operand has 13 states, 13 states have (on average 228.30769230769232) internal successors, (2968), 13 states have internal predecessors, (2968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:36:11,546 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:36:11,546 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 227 of 468 [2023-08-30 10:36:11,546 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:36:11,999 INFO L130 PetriNetUnfolder]: 2169/3791 cut-off events. [2023-08-30 10:36:11,999 INFO L131 PetriNetUnfolder]: For 27/27 co-relation queries the response was YES. [2023-08-30 10:36:12,005 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7301 conditions, 3791 events. 2169/3791 cut-off events. For 27/27 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 21034 event pairs, 2048 based on Foata normal form. 6/2775 useless extension candidates. Maximal degree in co-relation 7242. Up to 3430 conditions per place. [2023-08-30 10:36:12,013 INFO L137 encePairwiseOnDemand]: 465/468 looper letters, 41 selfloop transitions, 11 changer transitions 0/60 dead transitions. [2023-08-30 10:36:12,013 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 60 transitions, 294 flow [2023-08-30 10:36:12,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-30 10:36:12,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-30 10:36:12,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2782 transitions. [2023-08-30 10:36:12,021 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49537037037037035 [2023-08-30 10:36:12,022 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2782 transitions. [2023-08-30 10:36:12,022 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2782 transitions. [2023-08-30 10:36:12,023 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:36:12,024 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2782 transitions. [2023-08-30 10:36:12,030 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 231.83333333333334) internal successors, (2782), 12 states have internal predecessors, (2782), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:36:12,039 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 468.0) internal successors, (6084), 13 states have internal predecessors, (6084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:36:12,040 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 468.0) internal successors, (6084), 13 states have internal predecessors, (6084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:36:12,041 INFO L175 Difference]: Start difference. First operand has 62 places, 54 transitions, 154 flow. Second operand 12 states and 2782 transitions. [2023-08-30 10:36:12,041 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 60 transitions, 294 flow [2023-08-30 10:36:12,042 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 60 transitions, 280 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-08-30 10:36:12,043 INFO L231 Difference]: Finished difference. Result has 78 places, 60 transitions, 224 flow [2023-08-30 10:36:12,043 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=468, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=224, PETRI_PLACES=78, PETRI_TRANSITIONS=60} [2023-08-30 10:36:12,043 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 15 predicate places. [2023-08-30 10:36:12,043 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 60 transitions, 224 flow [2023-08-30 10:36:12,045 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 228.30769230769232) internal successors, (2968), 13 states have internal predecessors, (2968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:36:12,045 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:36:12,045 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 1, 1, 1, 1, 1] [2023-08-30 10:36:12,060 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-30 10:36:12,251 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:36:12,251 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-30 10:36:12,251 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:36:12,252 INFO L85 PathProgramCache]: Analyzing trace with hash 2147314439, now seen corresponding path program 3 times [2023-08-30 10:36:12,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:36:12,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25716192] [2023-08-30 10:36:12,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:36:12,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:36:12,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:36:12,597 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 10:36:12,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:36:12,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25716192] [2023-08-30 10:36:12,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [25716192] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:36:12,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1882670759] [2023-08-30 10:36:12,599 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-30 10:36:12,599 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:36:12,599 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:36:12,601 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) [2023-08-30 10:36:12,626 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-30 10:40:57,987 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2023-08-30 10:40:57,988 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 10:40:58,042 INFO L263 TraceCheckSpWp]: Trace formula consists of 801 conjuncts, 12 conjunts are in the unsatisfiable core [2023-08-30 10:40:58,044 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:40:58,067 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 10:40:58,067 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 10:40:58,264 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 10:40:58,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1882670759] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 10:40:58,264 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 10:40:58,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 24 [2023-08-30 10:40:58,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941580028] [2023-08-30 10:40:58,265 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 10:40:58,265 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-08-30 10:40:58,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:40:58,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-08-30 10:40:58,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2023-08-30 10:40:58,355 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 227 out of 468 [2023-08-30 10:40:58,360 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 60 transitions, 224 flow. Second operand has 25 states, 25 states have (on average 228.16) internal successors, (5704), 25 states have internal predecessors, (5704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:40:58,360 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:40:58,360 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 227 of 468 [2023-08-30 10:40:58,360 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:40:58,874 INFO L130 PetriNetUnfolder]: 2169/3803 cut-off events. [2023-08-30 10:40:58,874 INFO L131 PetriNetUnfolder]: For 470/470 co-relation queries the response was YES. [2023-08-30 10:40:58,881 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7385 conditions, 3803 events. 2169/3803 cut-off events. For 470/470 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 21043 event pairs, 2048 based on Foata normal form. 12/2793 useless extension candidates. Maximal degree in co-relation 7248. Up to 3430 conditions per place. [2023-08-30 10:40:58,887 INFO L137 encePairwiseOnDemand]: 465/468 looper letters, 41 selfloop transitions, 23 changer transitions 0/72 dead transitions. [2023-08-30 10:40:58,887 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 72 transitions, 448 flow [2023-08-30 10:40:58,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-08-30 10:40:58,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-08-30 10:40:58,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 5524 transitions. [2023-08-30 10:40:58,901 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4918091168091168 [2023-08-30 10:40:58,901 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 5524 transitions. [2023-08-30 10:40:58,901 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 5524 transitions. [2023-08-30 10:40:58,904 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:40:58,904 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 5524 transitions. [2023-08-30 10:40:58,914 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 230.16666666666666) internal successors, (5524), 24 states have internal predecessors, (5524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:40:58,928 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 468.0) internal successors, (11700), 25 states have internal predecessors, (11700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:40:58,930 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 468.0) internal successors, (11700), 25 states have internal predecessors, (11700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:40:58,930 INFO L175 Difference]: Start difference. First operand has 78 places, 60 transitions, 224 flow. Second operand 24 states and 5524 transitions. [2023-08-30 10:40:58,930 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 72 transitions, 448 flow [2023-08-30 10:40:58,932 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 72 transitions, 376 flow, removed 31 selfloop flow, removed 5 redundant places. [2023-08-30 10:40:58,933 INFO L231 Difference]: Finished difference. Result has 108 places, 72 transitions, 344 flow [2023-08-30 10:40:58,933 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=468, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=344, PETRI_PLACES=108, PETRI_TRANSITIONS=72} [2023-08-30 10:40:58,934 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 45 predicate places. [2023-08-30 10:40:58,934 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 72 transitions, 344 flow [2023-08-30 10:40:58,935 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 228.16) internal successors, (5704), 25 states have internal predecessors, (5704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:40:58,935 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:40:58,935 INFO L208 CegarLoopForPetriNet]: trace histogram [22, 2, 1, 1, 1, 1, 1] [2023-08-30 10:40:58,980 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-30 10:40:59,157 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-08-30 10:40:59,157 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-30 10:40:59,157 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:40:59,157 INFO L85 PathProgramCache]: Analyzing trace with hash -925349625, now seen corresponding path program 4 times [2023-08-30 10:40:59,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:40:59,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [790579436] [2023-08-30 10:40:59,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:40:59,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:40:59,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:41:00,235 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 10:41:00,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:41:00,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [790579436] [2023-08-30 10:41:00,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [790579436] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:41:00,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1370109888] [2023-08-30 10:41:00,236 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-30 10:41:00,236 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:41:00,236 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:41:00,241 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) [2023-08-30 10:41:00,245 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-30 10:41:00,667 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-30 10:41:00,667 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 10:41:00,674 INFO L263 TraceCheckSpWp]: Trace formula consists of 1593 conjuncts, 24 conjunts are in the unsatisfiable core [2023-08-30 10:41:00,677 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:41:00,728 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 10:41:00,728 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 10:41:01,310 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 10:41:01,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1370109888] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 10:41:01,310 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 10:41:01,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 48 [2023-08-30 10:41:01,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68390451] [2023-08-30 10:41:01,311 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 10:41:01,311 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2023-08-30 10:41:01,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:41:01,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2023-08-30 10:41:01,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2023-08-30 10:41:01,512 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 227 out of 468 [2023-08-30 10:41:01,519 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 72 transitions, 344 flow. Second operand has 49 states, 49 states have (on average 228.08163265306123) internal successors, (11176), 49 states have internal predecessors, (11176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:41:01,519 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:41:01,519 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 227 of 468 [2023-08-30 10:41:01,520 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:41:02,095 INFO L130 PetriNetUnfolder]: 2169/3827 cut-off events. [2023-08-30 10:41:02,096 INFO L131 PetriNetUnfolder]: For 5240/5240 co-relation queries the response was YES. [2023-08-30 10:41:02,107 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7529 conditions, 3827 events. 2169/3827 cut-off events. For 5240/5240 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 21043 event pairs, 2048 based on Foata normal form. 24/2829 useless extension candidates. Maximal degree in co-relation 7260. Up to 3430 conditions per place. [2023-08-30 10:41:02,114 INFO L137 encePairwiseOnDemand]: 465/468 looper letters, 41 selfloop transitions, 47 changer transitions 0/96 dead transitions. [2023-08-30 10:41:02,114 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 96 transitions, 712 flow [2023-08-30 10:41:02,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2023-08-30 10:41:02,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2023-08-30 10:41:02,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 11008 transitions. [2023-08-30 10:41:02,132 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49002849002849 [2023-08-30 10:41:02,133 INFO L72 ComplementDD]: Start complementDD. Operand 48 states and 11008 transitions. [2023-08-30 10:41:02,133 INFO L73 IsDeterministic]: Start isDeterministic. Operand 48 states and 11008 transitions. [2023-08-30 10:41:02,143 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:41:02,143 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 48 states and 11008 transitions. [2023-08-30 10:41:02,162 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 49 states, 48 states have (on average 229.33333333333334) internal successors, (11008), 48 states have internal predecessors, (11008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:41:02,189 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 49 states, 49 states have (on average 468.0) internal successors, (22932), 49 states have internal predecessors, (22932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:41:02,193 INFO L81 ComplementDD]: Finished complementDD. Result has 49 states, 49 states have (on average 468.0) internal successors, (22932), 49 states have internal predecessors, (22932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:41:02,194 INFO L175 Difference]: Start difference. First operand has 108 places, 72 transitions, 344 flow. Second operand 48 states and 11008 transitions. [2023-08-30 10:41:02,194 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 96 transitions, 712 flow [2023-08-30 10:41:02,199 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 96 transitions, 568 flow, removed 61 selfloop flow, removed 11 redundant places. [2023-08-30 10:41:02,201 INFO L231 Difference]: Finished difference. Result has 168 places, 96 transitions, 584 flow [2023-08-30 10:41:02,201 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=468, PETRI_DIFFERENCE_MINUEND_FLOW=248, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=48, PETRI_FLOW=584, PETRI_PLACES=168, PETRI_TRANSITIONS=96} [2023-08-30 10:41:02,202 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 105 predicate places. [2023-08-30 10:41:02,202 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 96 transitions, 584 flow [2023-08-30 10:41:02,204 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 228.08163265306123) internal successors, (11176), 49 states have internal predecessors, (11176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:41:02,204 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:41:02,205 INFO L208 CegarLoopForPetriNet]: trace histogram [46, 2, 1, 1, 1, 1, 1] [2023-08-30 10:41:02,217 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-08-30 10:41:02,414 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:41:02,414 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-30 10:41:02,415 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:41:02,415 INFO L85 PathProgramCache]: Analyzing trace with hash -134806265, now seen corresponding path program 5 times [2023-08-30 10:41:02,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:41:02,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237172483] [2023-08-30 10:41:02,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:41:02,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:41:02,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:41:05,666 INFO L134 CoverageAnalysis]: Checked inductivity of 1083 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 10:41:05,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:41:05,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237172483] [2023-08-30 10:41:05,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [237172483] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:41:05,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [7409812] [2023-08-30 10:41:05,667 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-30 10:41:05,667 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:41:05,667 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:41:05,669 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) [2023-08-30 10:41:05,705 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process Killed by 15