./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/pthread-ext/26_stack_cas_longer-1.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --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/pthread-ext/26_stack_cas_longer-1.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 e12b29ddb474fc17e74c2b71eb245022640b1de10fdbbb130c7f22e13cd3653f --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-30 12:49:02,089 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 12:49:02,091 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 12:49:02,134 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 12:49:02,135 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 12:49:02,138 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 12:49:02,139 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 12:49:02,142 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 12:49:02,144 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 12:49:02,150 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 12:49:02,151 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 12:49:02,153 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 12:49:02,153 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 12:49:02,156 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 12:49:02,157 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 12:49:02,163 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 12:49:02,165 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 12:49:02,165 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 12:49:02,168 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 12:49:02,169 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 12:49:02,182 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 12:49:02,184 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 12:49:02,185 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 12:49:02,186 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 12:49:02,191 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 12:49:02,194 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 12:49:02,194 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 12:49:02,195 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 12:49:02,196 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 12:49:02,197 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 12:49:02,198 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 12:49:02,199 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 12:49:02,200 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 12:49:02,201 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 12:49:02,202 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 12:49:02,202 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 12:49:02,203 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 12:49:02,203 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 12:49:02,203 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 12:49:02,204 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 12:49:02,205 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 12:49:02,206 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-08-30 12:49:02,240 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 12:49:02,240 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 12:49:02,241 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 12:49:02,242 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 12:49:02,242 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 12:49:02,243 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 12:49:02,243 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 12:49:02,243 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 12:49:02,244 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 12:49:02,244 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 12:49:02,245 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 12:49:02,245 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 12:49:02,245 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 12:49:02,245 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 12:49:02,245 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 12:49:02,246 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 12:49:02,246 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 12:49:02,246 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 12:49:02,246 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-08-30 12:49:02,246 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 12:49:02,246 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 12:49:02,247 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 12:49:02,247 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 12:49:02,247 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 12:49:02,247 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 12:49:02,248 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 12:49:02,248 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 12:49:02,248 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 12:49:02,248 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 12:49:02,248 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 12:49:02,249 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 12:49:02,249 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 12:49:02,249 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 12:49:02,249 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 12:49:02,249 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 12:49:02,250 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 12:49:02,250 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 12:49:02,250 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e12b29ddb474fc17e74c2b71eb245022640b1de10fdbbb130c7f22e13cd3653f Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-30 12:49:02,548 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 12:49:02,572 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 12:49:02,575 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 12:49:02,576 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 12:49:02,576 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 12:49:02,578 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-ext/26_stack_cas_longer-1.i [2023-08-30 12:49:03,795 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 12:49:04,068 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 12:49:04,069 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/26_stack_cas_longer-1.i [2023-08-30 12:49:04,082 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1c208f45d/6adc685200e5434b811481acf03530d2/FLAG8bd31c19c [2023-08-30 12:49:04,094 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1c208f45d/6adc685200e5434b811481acf03530d2 [2023-08-30 12:49:04,096 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 12:49:04,098 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 12:49:04,099 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 12:49:04,099 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 12:49:04,101 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 12:49:04,102 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 12:49:04" (1/1) ... [2023-08-30 12:49:04,103 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@15701ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:49:04, skipping insertion in model container [2023-08-30 12:49:04,103 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 12:49:04" (1/1) ... [2023-08-30 12:49:04,109 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 12:49:04,140 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 12:49:04,464 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/26_stack_cas_longer-1.i[31166,31179] [2023-08-30 12:49:04,477 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 12:49:04,490 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 12:49:04,543 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/26_stack_cas_longer-1.i[31166,31179] [2023-08-30 12:49:04,554 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 12:49:04,597 INFO L208 MainTranslator]: Completed translation [2023-08-30 12:49:04,598 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:49:04 WrapperNode [2023-08-30 12:49:04,599 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 12:49:04,600 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 12:49:04,600 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 12:49:04,600 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 12:49:04,606 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:49:04" (1/1) ... [2023-08-30 12:49:04,620 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:49:04" (1/1) ... [2023-08-30 12:49:04,642 INFO L138 Inliner]: procedures = 177, calls = 47, calls flagged for inlining = 16, calls inlined = 19, statements flattened = 198 [2023-08-30 12:49:04,642 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 12:49:04,643 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 12:49:04,643 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 12:49:04,643 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 12:49:04,651 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:49:04" (1/1) ... [2023-08-30 12:49:04,651 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:49:04" (1/1) ... [2023-08-30 12:49:04,654 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:49:04" (1/1) ... [2023-08-30 12:49:04,654 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:49:04" (1/1) ... [2023-08-30 12:49:04,660 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:49:04" (1/1) ... [2023-08-30 12:49:04,664 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:49:04" (1/1) ... [2023-08-30 12:49:04,665 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:49:04" (1/1) ... [2023-08-30 12:49:04,667 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:49:04" (1/1) ... [2023-08-30 12:49:04,670 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 12:49:04,670 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 12:49:04,671 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 12:49:04,671 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 12:49:04,671 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:49:04" (1/1) ... [2023-08-30 12:49:04,676 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 12:49:04,689 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 12:49:04,700 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 12:49:04,715 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 12:49:04,738 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 12:49:04,738 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2023-08-30 12:49:04,739 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2023-08-30 12:49:04,739 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 12:49:04,739 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 12:49:04,739 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 12:49:04,739 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 12:49:04,739 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 12:49:04,739 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 12:49:04,739 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 12:49:04,740 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 12:49:04,904 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 12:49:04,906 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 12:49:05,268 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 12:49:05,418 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 12:49:05,419 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-08-30 12:49:05,421 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 12:49:05 BoogieIcfgContainer [2023-08-30 12:49:05,421 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 12:49:05,422 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 12:49:05,422 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 12:49:05,425 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 12:49:05,425 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 12:49:04" (1/3) ... [2023-08-30 12:49:05,426 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d4ea9ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 12:49:05, skipping insertion in model container [2023-08-30 12:49:05,426 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:49:04" (2/3) ... [2023-08-30 12:49:05,426 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d4ea9ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 12:49:05, skipping insertion in model container [2023-08-30 12:49:05,426 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 12:49:05" (3/3) ... [2023-08-30 12:49:05,427 INFO L112 eAbstractionObserver]: Analyzing ICFG 26_stack_cas_longer-1.i [2023-08-30 12:49:05,434 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 12:49:05,440 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 12:49:05,441 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2023-08-30 12:49:05,441 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 12:49:05,493 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-30 12:49:05,522 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 126 places, 133 transitions, 271 flow [2023-08-30 12:49:05,563 INFO L130 PetriNetUnfolder]: 11/143 cut-off events. [2023-08-30 12:49:05,563 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 12:49:05,568 INFO L83 FinitePrefix]: Finished finitePrefix Result has 148 conditions, 143 events. 11/143 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 136 event pairs, 0 based on Foata normal form. 0/120 useless extension candidates. Maximal degree in co-relation 109. Up to 4 conditions per place. [2023-08-30 12:49:05,568 INFO L82 GeneralOperation]: Start removeDead. Operand has 126 places, 133 transitions, 271 flow [2023-08-30 12:49:05,572 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 126 places, 133 transitions, 271 flow [2023-08-30 12:49:05,575 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 12:49:05,583 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 126 places, 133 transitions, 271 flow [2023-08-30 12:49:05,585 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 126 places, 133 transitions, 271 flow [2023-08-30 12:49:05,586 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 126 places, 133 transitions, 271 flow [2023-08-30 12:49:05,610 INFO L130 PetriNetUnfolder]: 11/143 cut-off events. [2023-08-30 12:49:05,611 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 12:49:05,612 INFO L83 FinitePrefix]: Finished finitePrefix Result has 148 conditions, 143 events. 11/143 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 136 event pairs, 0 based on Foata normal form. 0/120 useless extension candidates. Maximal degree in co-relation 109. Up to 4 conditions per place. [2023-08-30 12:49:05,621 INFO L119 LiptonReduction]: Number of co-enabled transitions 2522 [2023-08-30 12:49:10,074 INFO L134 LiptonReduction]: Checked pairs total: 3076 [2023-08-30 12:49:10,074 INFO L136 LiptonReduction]: Total number of compositions: 136 [2023-08-30 12:49:10,086 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 12:49:10,092 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;@6c574f90, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 12:49:10,092 INFO L358 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2023-08-30 12:49:10,096 INFO L130 PetriNetUnfolder]: 2/13 cut-off events. [2023-08-30 12:49:10,096 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 12:49:10,097 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:49:10,097 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-30 12:49:10,097 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-30 12:49:10,102 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:49:10,102 INFO L85 PathProgramCache]: Analyzing trace with hash -1550590541, now seen corresponding path program 1 times [2023-08-30 12:49:10,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:49:10,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237424243] [2023-08-30 12:49:10,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:49:10,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:49:10,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 12:49:10,199 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-30 12:49:10,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 12:49:10,233 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-30 12:49:10,235 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-30 12:49:10,236 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (20 of 21 remaining) [2023-08-30 12:49:10,238 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 21 remaining) [2023-08-30 12:49:10,238 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 21 remaining) [2023-08-30 12:49:10,238 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 21 remaining) [2023-08-30 12:49:10,238 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 21 remaining) [2023-08-30 12:49:10,239 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 21 remaining) [2023-08-30 12:49:10,239 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 21 remaining) [2023-08-30 12:49:10,239 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 21 remaining) [2023-08-30 12:49:10,239 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 21 remaining) [2023-08-30 12:49:10,240 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 21 remaining) [2023-08-30 12:49:10,240 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 21 remaining) [2023-08-30 12:49:10,240 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 21 remaining) [2023-08-30 12:49:10,240 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 21 remaining) [2023-08-30 12:49:10,241 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 21 remaining) [2023-08-30 12:49:10,241 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 21 remaining) [2023-08-30 12:49:10,241 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 21 remaining) [2023-08-30 12:49:10,241 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 21 remaining) [2023-08-30 12:49:10,242 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 21 remaining) [2023-08-30 12:49:10,242 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 21 remaining) [2023-08-30 12:49:10,242 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 21 remaining) [2023-08-30 12:49:10,242 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 21 remaining) [2023-08-30 12:49:10,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 12:49:10,243 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-30 12:49:10,246 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-30 12:49:10,246 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-30 12:49:10,300 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-30 12:49:10,304 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 217 places, 231 transitions, 474 flow [2023-08-30 12:49:10,372 INFO L130 PetriNetUnfolder]: 21/253 cut-off events. [2023-08-30 12:49:10,372 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 12:49:10,376 INFO L83 FinitePrefix]: Finished finitePrefix Result has 263 conditions, 253 events. 21/253 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 535 event pairs, 0 based on Foata normal form. 0/209 useless extension candidates. Maximal degree in co-relation 206. Up to 6 conditions per place. [2023-08-30 12:49:10,376 INFO L82 GeneralOperation]: Start removeDead. Operand has 217 places, 231 transitions, 474 flow [2023-08-30 12:49:10,380 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 217 places, 231 transitions, 474 flow [2023-08-30 12:49:10,380 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 12:49:10,380 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 217 places, 231 transitions, 474 flow [2023-08-30 12:49:10,381 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 217 places, 231 transitions, 474 flow [2023-08-30 12:49:10,381 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 217 places, 231 transitions, 474 flow [2023-08-30 12:49:10,422 INFO L130 PetriNetUnfolder]: 21/253 cut-off events. [2023-08-30 12:49:10,423 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 12:49:10,426 INFO L83 FinitePrefix]: Finished finitePrefix Result has 263 conditions, 253 events. 21/253 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 535 event pairs, 0 based on Foata normal form. 0/209 useless extension candidates. Maximal degree in co-relation 206. Up to 6 conditions per place. [2023-08-30 12:49:10,436 INFO L119 LiptonReduction]: Number of co-enabled transitions 24056 [2023-08-30 12:49:15,154 INFO L134 LiptonReduction]: Checked pairs total: 65438 [2023-08-30 12:49:15,154 INFO L136 LiptonReduction]: Total number of compositions: 183 [2023-08-30 12:49:15,156 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 12:49:15,157 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;@6c574f90, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 12:49:15,158 INFO L358 AbstractCegarLoop]: Starting to check reachability of 31 error locations. [2023-08-30 12:49:15,162 INFO L130 PetriNetUnfolder]: 3/31 cut-off events. [2023-08-30 12:49:15,162 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 12:49:15,162 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:49:15,163 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-30 12:49:15,163 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 28 more)] === [2023-08-30 12:49:15,163 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:49:15,163 INFO L85 PathProgramCache]: Analyzing trace with hash -1068023603, now seen corresponding path program 1 times [2023-08-30 12:49:15,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:49:15,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888733265] [2023-08-30 12:49:15,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:49:15,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:49:15,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 12:49:15,207 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-30 12:49:15,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 12:49:15,232 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-30 12:49:15,233 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-30 12:49:15,233 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (30 of 31 remaining) [2023-08-30 12:49:15,233 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (29 of 31 remaining) [2023-08-30 12:49:15,235 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (28 of 31 remaining) [2023-08-30 12:49:15,236 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (27 of 31 remaining) [2023-08-30 12:49:15,236 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (26 of 31 remaining) [2023-08-30 12:49:15,236 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (25 of 31 remaining) [2023-08-30 12:49:15,236 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 31 remaining) [2023-08-30 12:49:15,237 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 31 remaining) [2023-08-30 12:49:15,237 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 31 remaining) [2023-08-30 12:49:15,237 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 31 remaining) [2023-08-30 12:49:15,237 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 31 remaining) [2023-08-30 12:49:15,247 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 31 remaining) [2023-08-30 12:49:15,248 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 31 remaining) [2023-08-30 12:49:15,248 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 31 remaining) [2023-08-30 12:49:15,248 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 31 remaining) [2023-08-30 12:49:15,249 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 31 remaining) [2023-08-30 12:49:15,249 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 31 remaining) [2023-08-30 12:49:15,249 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 31 remaining) [2023-08-30 12:49:15,249 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 31 remaining) [2023-08-30 12:49:15,250 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 31 remaining) [2023-08-30 12:49:15,250 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 31 remaining) [2023-08-30 12:49:15,250 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 31 remaining) [2023-08-30 12:49:15,250 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 31 remaining) [2023-08-30 12:49:15,250 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 31 remaining) [2023-08-30 12:49:15,251 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 31 remaining) [2023-08-30 12:49:15,251 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 31 remaining) [2023-08-30 12:49:15,251 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 31 remaining) [2023-08-30 12:49:15,251 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 31 remaining) [2023-08-30 12:49:15,252 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 31 remaining) [2023-08-30 12:49:15,252 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 31 remaining) [2023-08-30 12:49:15,252 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 31 remaining) [2023-08-30 12:49:15,252 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 12:49:15,252 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-30 12:49:15,253 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-30 12:49:15,253 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-08-30 12:49:15,312 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-30 12:49:15,321 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 308 places, 329 transitions, 679 flow [2023-08-30 12:49:15,389 INFO L130 PetriNetUnfolder]: 31/363 cut-off events. [2023-08-30 12:49:15,390 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2023-08-30 12:49:15,394 INFO L83 FinitePrefix]: Finished finitePrefix Result has 379 conditions, 363 events. 31/363 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 1085 event pairs, 0 based on Foata normal form. 0/298 useless extension candidates. Maximal degree in co-relation 303. Up to 8 conditions per place. [2023-08-30 12:49:15,395 INFO L82 GeneralOperation]: Start removeDead. Operand has 308 places, 329 transitions, 679 flow [2023-08-30 12:49:15,399 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 308 places, 329 transitions, 679 flow [2023-08-30 12:49:15,400 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 12:49:15,400 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 308 places, 329 transitions, 679 flow [2023-08-30 12:49:15,400 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 308 places, 329 transitions, 679 flow [2023-08-30 12:49:15,401 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 308 places, 329 transitions, 679 flow [2023-08-30 12:49:15,460 INFO L130 PetriNetUnfolder]: 31/363 cut-off events. [2023-08-30 12:49:15,460 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2023-08-30 12:49:15,466 INFO L83 FinitePrefix]: Finished finitePrefix Result has 379 conditions, 363 events. 31/363 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 1085 event pairs, 0 based on Foata normal form. 0/298 useless extension candidates. Maximal degree in co-relation 303. Up to 8 conditions per place. [2023-08-30 12:49:15,488 INFO L119 LiptonReduction]: Number of co-enabled transitions 64602 [2023-08-30 12:49:21,322 INFO L134 LiptonReduction]: Checked pairs total: 172575 [2023-08-30 12:49:21,322 INFO L136 LiptonReduction]: Total number of compositions: 247 [2023-08-30 12:49:21,325 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 12:49:21,326 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;@6c574f90, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 12:49:21,326 INFO L358 AbstractCegarLoop]: Starting to check reachability of 41 error locations. [2023-08-30 12:49:21,330 INFO L130 PetriNetUnfolder]: 4/35 cut-off events. [2023-08-30 12:49:21,331 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-08-30 12:49:21,331 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:49:21,331 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:49:21,331 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2023-08-30 12:49:21,332 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:49:21,332 INFO L85 PathProgramCache]: Analyzing trace with hash -657837876, now seen corresponding path program 1 times [2023-08-30 12:49:21,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:49:21,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [234837999] [2023-08-30 12:49:21,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:49:21,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:49:21,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:49:21,474 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 12:49:21,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:49:21,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [234837999] [2023-08-30 12:49:21,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [234837999] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:49:21,476 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:49:21,476 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 12:49:21,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048459564] [2023-08-30 12:49:21,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:49:21,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 12:49:21,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:49:21,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 12:49:21,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 12:49:21,541 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 281 out of 576 [2023-08-30 12:49:21,545 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 144 transitions, 309 flow. Second operand has 4 states, 4 states have (on average 283.5) internal successors, (1134), 4 states have internal predecessors, (1134), 0 states have call successors, (0), 0 states 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 12:49:21,546 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:49:21,546 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 281 of 576 [2023-08-30 12:49:21,547 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:49:31,730 INFO L130 PetriNetUnfolder]: 79015/128465 cut-off events. [2023-08-30 12:49:31,731 INFO L131 PetriNetUnfolder]: For 3583/3583 co-relation queries the response was YES. [2023-08-30 12:49:31,996 INFO L83 FinitePrefix]: Finished finitePrefix Result has 236052 conditions, 128465 events. 79015/128465 cut-off events. For 3583/3583 co-relation queries the response was YES. Maximal size of possible extension queue 3329. Compared 1202103 event pairs, 5937 based on Foata normal form. 0/90104 useless extension candidates. Maximal degree in co-relation 133704. Up to 76016 conditions per place. [2023-08-30 12:49:32,836 INFO L137 encePairwiseOnDemand]: 560/576 looper letters, 232 selfloop transitions, 9 changer transitions 0/297 dead transitions. [2023-08-30 12:49:32,837 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 297 transitions, 1128 flow [2023-08-30 12:49:32,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 12:49:32,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 12:49:32,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1671 transitions. [2023-08-30 12:49:32,856 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5802083333333333 [2023-08-30 12:49:32,858 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1671 transitions. [2023-08-30 12:49:32,858 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1671 transitions. [2023-08-30 12:49:32,862 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:49:32,864 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1671 transitions. [2023-08-30 12:49:32,872 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 334.2) internal successors, (1671), 5 states have internal predecessors, (1671), 0 states have call successors, (0), 0 states 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 12:49:32,882 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 576.0) internal successors, (3456), 6 states have internal predecessors, (3456), 0 states have call successors, (0), 0 states 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 12:49:32,884 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 576.0) internal successors, (3456), 6 states have internal predecessors, (3456), 0 states have call successors, (0), 0 states 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 12:49:32,885 INFO L175 Difference]: Start difference. First operand has 130 places, 144 transitions, 309 flow. Second operand 5 states and 1671 transitions. [2023-08-30 12:49:32,886 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 297 transitions, 1128 flow [2023-08-30 12:49:32,895 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 297 transitions, 1116 flow, removed 6 selfloop flow, removed 0 redundant places. [2023-08-30 12:49:32,901 INFO L231 Difference]: Finished difference. Result has 136 places, 144 transitions, 361 flow [2023-08-30 12:49:32,902 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=576, PETRI_DIFFERENCE_MINUEND_FLOW=287, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=361, PETRI_PLACES=136, PETRI_TRANSITIONS=144} [2023-08-30 12:49:32,906 INFO L281 CegarLoopForPetriNet]: 130 programPoint places, 6 predicate places. [2023-08-30 12:49:32,906 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 144 transitions, 361 flow [2023-08-30 12:49:32,907 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 283.5) internal successors, (1134), 4 states have internal predecessors, (1134), 0 states have call successors, (0), 0 states 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 12:49:32,907 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:49:32,907 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:49:32,907 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-30 12:49:32,909 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2023-08-30 12:49:32,910 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:49:32,910 INFO L85 PathProgramCache]: Analyzing trace with hash 1941011566, now seen corresponding path program 1 times [2023-08-30 12:49:32,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:49:32,911 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582788862] [2023-08-30 12:49:32,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:49:32,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:49:32,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:49:33,055 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 12:49:33,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:49:33,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582788862] [2023-08-30 12:49:33,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1582788862] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:49:33,063 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:49:33,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 12:49:33,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096310168] [2023-08-30 12:49:33,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:49:33,064 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 12:49:33,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:49:33,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 12:49:33,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 12:49:33,138 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 266 out of 576 [2023-08-30 12:49:33,139 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 144 transitions, 361 flow. Second operand has 3 states, 3 states have (on average 269.3333333333333) internal successors, (808), 3 states have internal predecessors, (808), 0 states have call successors, (0), 0 states 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 12:49:33,139 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:49:33,139 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 266 of 576 [2023-08-30 12:49:33,139 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:49:51,264 INFO L130 PetriNetUnfolder]: 174099/245465 cut-off events. [2023-08-30 12:49:51,264 INFO L131 PetriNetUnfolder]: For 31634/35602 co-relation queries the response was YES. [2023-08-30 12:49:51,905 INFO L83 FinitePrefix]: Finished finitePrefix Result has 506325 conditions, 245465 events. 174099/245465 cut-off events. For 31634/35602 co-relation queries the response was YES. Maximal size of possible extension queue 11109. Compared 2033246 event pairs, 60070 based on Foata normal form. 7769/205138 useless extension candidates. Maximal degree in co-relation 375648. Up to 227979 conditions per place. [2023-08-30 12:49:53,053 INFO L137 encePairwiseOnDemand]: 551/576 looper letters, 130 selfloop transitions, 4 changer transitions 0/176 dead transitions. [2023-08-30 12:49:53,053 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 176 transitions, 721 flow [2023-08-30 12:49:53,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 12:49:53,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 12:49:53,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 949 transitions. [2023-08-30 12:49:53,058 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5491898148148148 [2023-08-30 12:49:53,058 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 949 transitions. [2023-08-30 12:49:53,058 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 949 transitions. [2023-08-30 12:49:53,058 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:49:53,059 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 949 transitions. [2023-08-30 12:49:53,061 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 316.3333333333333) internal successors, (949), 3 states have internal predecessors, (949), 0 states have call successors, (0), 0 states 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 12:49:53,064 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 576.0) internal successors, (2304), 4 states have internal predecessors, (2304), 0 states have call successors, (0), 0 states 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 12:49:53,065 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 576.0) internal successors, (2304), 4 states have internal predecessors, (2304), 0 states have call successors, (0), 0 states 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 12:49:53,065 INFO L175 Difference]: Start difference. First operand has 136 places, 144 transitions, 361 flow. Second operand 3 states and 949 transitions. [2023-08-30 12:49:53,065 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 176 transitions, 721 flow [2023-08-30 12:49:53,096 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 176 transitions, 721 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 12:49:53,099 INFO L231 Difference]: Finished difference. Result has 139 places, 147 transitions, 427 flow [2023-08-30 12:49:53,099 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=576, PETRI_DIFFERENCE_MINUEND_FLOW=361, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=427, PETRI_PLACES=139, PETRI_TRANSITIONS=147} [2023-08-30 12:49:53,100 INFO L281 CegarLoopForPetriNet]: 130 programPoint places, 9 predicate places. [2023-08-30 12:49:53,101 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 147 transitions, 427 flow [2023-08-30 12:49:53,101 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 269.3333333333333) internal successors, (808), 3 states have internal predecessors, (808), 0 states have call successors, (0), 0 states 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 12:49:53,101 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:49:53,101 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2023-08-30 12:49:53,102 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-30 12:49:53,102 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2023-08-30 12:49:53,103 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:49:53,103 INFO L85 PathProgramCache]: Analyzing trace with hash 1213916751, now seen corresponding path program 1 times [2023-08-30 12:49:53,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:49:53,103 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [533597704] [2023-08-30 12:49:53,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:49:53,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:49:53,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 12:49:53,134 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-30 12:49:53,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 12:49:53,153 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-30 12:49:53,153 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-30 12:49:53,154 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (40 of 41 remaining) [2023-08-30 12:49:53,154 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (39 of 41 remaining) [2023-08-30 12:49:53,154 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (38 of 41 remaining) [2023-08-30 12:49:53,154 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (37 of 41 remaining) [2023-08-30 12:49:53,154 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (36 of 41 remaining) [2023-08-30 12:49:53,155 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (35 of 41 remaining) [2023-08-30 12:49:53,155 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (34 of 41 remaining) [2023-08-30 12:49:53,156 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (33 of 41 remaining) [2023-08-30 12:49:53,156 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (32 of 41 remaining) [2023-08-30 12:49:53,156 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (31 of 41 remaining) [2023-08-30 12:49:53,156 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (30 of 41 remaining) [2023-08-30 12:49:53,156 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (29 of 41 remaining) [2023-08-30 12:49:53,156 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (28 of 41 remaining) [2023-08-30 12:49:53,157 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (27 of 41 remaining) [2023-08-30 12:49:53,158 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (26 of 41 remaining) [2023-08-30 12:49:53,158 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (25 of 41 remaining) [2023-08-30 12:49:53,158 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 41 remaining) [2023-08-30 12:49:53,158 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 41 remaining) [2023-08-30 12:49:53,158 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 41 remaining) [2023-08-30 12:49:53,158 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 41 remaining) [2023-08-30 12:49:53,159 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 41 remaining) [2023-08-30 12:49:53,159 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 41 remaining) [2023-08-30 12:49:53,159 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 41 remaining) [2023-08-30 12:49:53,159 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 41 remaining) [2023-08-30 12:49:53,159 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 41 remaining) [2023-08-30 12:49:53,159 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 41 remaining) [2023-08-30 12:49:53,159 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 41 remaining) [2023-08-30 12:49:53,160 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 41 remaining) [2023-08-30 12:49:53,160 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 41 remaining) [2023-08-30 12:49:53,160 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 41 remaining) [2023-08-30 12:49:53,160 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 41 remaining) [2023-08-30 12:49:53,160 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 41 remaining) [2023-08-30 12:49:53,160 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 41 remaining) [2023-08-30 12:49:53,160 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 41 remaining) [2023-08-30 12:49:53,161 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 41 remaining) [2023-08-30 12:49:53,161 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 41 remaining) [2023-08-30 12:49:53,161 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 41 remaining) [2023-08-30 12:49:53,161 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 41 remaining) [2023-08-30 12:49:53,161 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 41 remaining) [2023-08-30 12:49:53,161 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 41 remaining) [2023-08-30 12:49:53,162 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 41 remaining) [2023-08-30 12:49:53,162 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-30 12:49:53,162 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-08-30 12:49:53,163 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-30 12:49:53,163 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-08-30 12:49:53,222 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-30 12:49:53,225 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 399 places, 427 transitions, 886 flow [2023-08-30 12:49:53,502 INFO L130 PetriNetUnfolder]: 41/473 cut-off events. [2023-08-30 12:49:53,502 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2023-08-30 12:49:53,508 INFO L83 FinitePrefix]: Finished finitePrefix Result has 496 conditions, 473 events. 41/473 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1679 event pairs, 0 based on Foata normal form. 0/387 useless extension candidates. Maximal degree in co-relation 400. Up to 10 conditions per place. [2023-08-30 12:49:53,509 INFO L82 GeneralOperation]: Start removeDead. Operand has 399 places, 427 transitions, 886 flow [2023-08-30 12:49:53,514 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 399 places, 427 transitions, 886 flow [2023-08-30 12:49:53,515 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 12:49:53,515 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 399 places, 427 transitions, 886 flow [2023-08-30 12:49:53,515 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 399 places, 427 transitions, 886 flow [2023-08-30 12:49:53,516 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 399 places, 427 transitions, 886 flow [2023-08-30 12:49:53,599 INFO L130 PetriNetUnfolder]: 41/473 cut-off events. [2023-08-30 12:49:53,599 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2023-08-30 12:49:53,607 INFO L83 FinitePrefix]: Finished finitePrefix Result has 496 conditions, 473 events. 41/473 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1679 event pairs, 0 based on Foata normal form. 0/387 useless extension candidates. Maximal degree in co-relation 400. Up to 10 conditions per place. [2023-08-30 12:49:53,634 INFO L119 LiptonReduction]: Number of co-enabled transitions 124160 [2023-08-30 12:50:01,049 INFO L134 LiptonReduction]: Checked pairs total: 353281 [2023-08-30 12:50:01,050 INFO L136 LiptonReduction]: Total number of compositions: 325 [2023-08-30 12:50:01,053 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 12:50:01,054 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;@6c574f90, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 12:50:01,054 INFO L358 AbstractCegarLoop]: Starting to check reachability of 51 error locations. [2023-08-30 12:50:01,057 INFO L130 PetriNetUnfolder]: 4/36 cut-off events. [2023-08-30 12:50:01,058 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-08-30 12:50:01,058 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:50:01,058 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:50:01,058 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2023-08-30 12:50:01,058 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:50:01,058 INFO L85 PathProgramCache]: Analyzing trace with hash 1634028145, now seen corresponding path program 1 times [2023-08-30 12:50:01,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:50:01,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [543553646] [2023-08-30 12:50:01,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:50:01,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:50:01,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:50:01,141 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 12:50:01,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:50:01,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [543553646] [2023-08-30 12:50:01,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [543553646] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:50:01,143 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:50:01,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 12:50:01,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905147834] [2023-08-30 12:50:01,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:50:01,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 12:50:01,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:50:01,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 12:50:01,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 12:50:01,167 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 366 out of 752 [2023-08-30 12:50:01,169 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 193 transitions, 418 flow. Second operand has 4 states, 4 states have (on average 368.5) internal successors, (1474), 4 states have internal predecessors, (1474), 0 states have call successors, (0), 0 states 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 12:50:01,170 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:50:01,170 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 366 of 752 [2023-08-30 12:50:01,170 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand