./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_05-lockfuns_racefree.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/goblint-regression/28-race_reach_05-lockfuns_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 1fe12ce8951e45860142b9cebaa325eef531c18fa917882c03ee5396afb187f5 --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 14:05:19,152 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 14:05:19,155 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 14:05:19,191 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 14:05:19,193 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 14:05:19,196 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 14:05:19,198 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 14:05:19,201 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 14:05:19,204 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 14:05:19,205 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 14:05:19,206 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 14:05:19,208 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 14:05:19,209 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 14:05:19,212 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 14:05:19,214 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 14:05:19,217 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 14:05:19,218 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 14:05:19,219 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 14:05:19,221 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 14:05:19,222 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 14:05:19,226 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 14:05:19,226 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 14:05:19,227 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 14:05:19,228 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 14:05:19,235 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 14:05:19,236 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 14:05:19,236 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 14:05:19,238 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 14:05:19,238 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 14:05:19,239 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 14:05:19,239 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 14:05:19,240 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 14:05:19,241 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 14:05:19,241 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 14:05:19,242 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 14:05:19,242 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 14:05:19,243 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 14:05:19,243 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 14:05:19,243 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 14:05:19,244 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 14:05:19,245 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 14:05:19,250 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-08-30 14:05:19,284 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 14:05:19,284 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 14:05:19,285 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 14:05:19,285 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 14:05:19,286 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 14:05:19,286 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 14:05:19,287 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 14:05:19,287 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 14:05:19,287 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 14:05:19,287 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 14:05:19,288 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 14:05:19,288 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 14:05:19,288 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 14:05:19,289 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 14:05:19,289 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 14:05:19,289 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 14:05:19,289 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 14:05:19,289 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 14:05:19,290 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-08-30 14:05:19,290 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 14:05:19,290 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 14:05:19,290 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 14:05:19,290 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 14:05:19,291 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 14:05:19,291 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 14:05:19,291 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 14:05:19,291 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 14:05:19,291 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 14:05:19,292 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 14:05:19,292 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 14:05:19,292 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 14:05:19,292 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 14:05:19,292 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 14:05:19,293 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 14:05:19,293 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 14:05:19,293 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 14:05:19,293 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 14:05:19,293 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1fe12ce8951e45860142b9cebaa325eef531c18fa917882c03ee5396afb187f5 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-30 14:05:19,559 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 14:05:19,577 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 14:05:19,579 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 14:05:19,580 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 14:05:19,580 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 14:05:19,582 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_05-lockfuns_racefree.i [2023-08-30 14:05:20,804 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 14:05:21,097 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 14:05:21,098 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_05-lockfuns_racefree.i [2023-08-30 14:05:21,111 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2be5639aa/f80deca1ac1b4a449d9d55facdccfcb7/FLAGbde954edb [2023-08-30 14:05:21,133 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2be5639aa/f80deca1ac1b4a449d9d55facdccfcb7 [2023-08-30 14:05:21,136 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 14:05:21,137 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 14:05:21,137 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 14:05:21,137 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 14:05:21,140 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 14:05:21,140 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 02:05:21" (1/1) ... [2023-08-30 14:05:21,142 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@25a60f3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:05:21, skipping insertion in model container [2023-08-30 14:05:21,142 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 02:05:21" (1/1) ... [2023-08-30 14:05:21,147 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 14:05:21,186 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 14:05:21,393 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_05-lockfuns_racefree.i[30176,30189] [2023-08-30 14:05:21,423 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 14:05:21,434 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 14:05:21,491 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_05-lockfuns_racefree.i[30176,30189] [2023-08-30 14:05:21,503 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 14:05:21,542 INFO L208 MainTranslator]: Completed translation [2023-08-30 14:05:21,542 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:05:21 WrapperNode [2023-08-30 14:05:21,542 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 14:05:21,543 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 14:05:21,543 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 14:05:21,543 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 14:05:21,549 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:05:21" (1/1) ... [2023-08-30 14:05:21,574 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:05:21" (1/1) ... [2023-08-30 14:05:21,603 INFO L138 Inliner]: procedures = 172, calls = 33, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 114 [2023-08-30 14:05:21,604 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 14:05:21,605 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 14:05:21,605 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 14:05:21,606 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 14:05:21,613 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:05:21" (1/1) ... [2023-08-30 14:05:21,614 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:05:21" (1/1) ... [2023-08-30 14:05:21,629 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:05:21" (1/1) ... [2023-08-30 14:05:21,630 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:05:21" (1/1) ... [2023-08-30 14:05:21,634 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:05:21" (1/1) ... [2023-08-30 14:05:21,637 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:05:21" (1/1) ... [2023-08-30 14:05:21,639 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:05:21" (1/1) ... [2023-08-30 14:05:21,640 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:05:21" (1/1) ... [2023-08-30 14:05:21,650 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 14:05:21,651 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 14:05:21,651 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 14:05:21,651 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 14:05:21,652 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:05:21" (1/1) ... [2023-08-30 14:05:21,662 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 14:05:21,673 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:05:21,683 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 14:05:21,688 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 14:05:21,715 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 14:05:21,715 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 14:05:21,715 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-30 14:05:21,715 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 14:05:21,715 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 14:05:21,716 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-30 14:05:21,716 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-30 14:05:21,716 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 14:05:21,716 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 14:05:21,716 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 14:05:21,716 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 14:05:21,717 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 14:05:21,917 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 14:05:21,918 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 14:05:22,157 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 14:05:22,164 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 14:05:22,166 INFO L302 CfgBuilder]: Removed 10 assume(true) statements. [2023-08-30 14:05:22,169 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 02:05:22 BoogieIcfgContainer [2023-08-30 14:05:22,169 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 14:05:22,171 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 14:05:22,171 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 14:05:22,174 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 14:05:22,174 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 02:05:21" (1/3) ... [2023-08-30 14:05:22,175 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26623610 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 02:05:22, skipping insertion in model container [2023-08-30 14:05:22,175 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:05:21" (2/3) ... [2023-08-30 14:05:22,176 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26623610 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 02:05:22, skipping insertion in model container [2023-08-30 14:05:22,176 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 02:05:22" (3/3) ... [2023-08-30 14:05:22,177 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_05-lockfuns_racefree.i [2023-08-30 14:05:22,183 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 14:05:22,191 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 14:05:22,192 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2023-08-30 14:05:22,192 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 14:05:22,268 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-08-30 14:05:22,309 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 109 places, 118 transitions, 244 flow [2023-08-30 14:05:22,401 INFO L130 PetriNetUnfolder]: 17/152 cut-off events. [2023-08-30 14:05:22,401 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 14:05:22,406 INFO L83 FinitePrefix]: Finished finitePrefix Result has 158 conditions, 152 events. 17/152 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 360 event pairs, 0 based on Foata normal form. 0/124 useless extension candidates. Maximal degree in co-relation 81. Up to 4 conditions per place. [2023-08-30 14:05:22,406 INFO L82 GeneralOperation]: Start removeDead. Operand has 109 places, 118 transitions, 244 flow [2023-08-30 14:05:22,411 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 107 places, 115 transitions, 238 flow [2023-08-30 14:05:22,414 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 14:05:22,433 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 107 places, 115 transitions, 238 flow [2023-08-30 14:05:22,440 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 107 places, 115 transitions, 238 flow [2023-08-30 14:05:22,440 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 107 places, 115 transitions, 238 flow [2023-08-30 14:05:22,485 INFO L130 PetriNetUnfolder]: 16/149 cut-off events. [2023-08-30 14:05:22,485 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 14:05:22,487 INFO L83 FinitePrefix]: Finished finitePrefix Result has 155 conditions, 149 events. 16/149 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 357 event pairs, 0 based on Foata normal form. 0/122 useless extension candidates. Maximal degree in co-relation 81. Up to 4 conditions per place. [2023-08-30 14:05:22,490 INFO L119 LiptonReduction]: Number of co-enabled transitions 3344 [2023-08-30 14:05:24,934 INFO L134 LiptonReduction]: Checked pairs total: 4821 [2023-08-30 14:05:24,934 INFO L136 LiptonReduction]: Total number of compositions: 99 [2023-08-30 14:05:24,945 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 14:05:24,950 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;@54b22e22, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 14:05:24,950 INFO L358 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2023-08-30 14:05:24,955 INFO L130 PetriNetUnfolder]: 0/7 cut-off events. [2023-08-30 14:05:24,955 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 14:05:24,956 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:05:24,956 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-30 14:05:24,957 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-08-30 14:05:24,960 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:05:24,961 INFO L85 PathProgramCache]: Analyzing trace with hash 14177731, now seen corresponding path program 1 times [2023-08-30 14:05:24,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:05:24,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559274648] [2023-08-30 14:05:24,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:05:24,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:05:25,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:05:25,184 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 14:05:25,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:05:25,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [559274648] [2023-08-30 14:05:25,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [559274648] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:05:25,186 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:05:25,186 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 14:05:25,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876085890] [2023-08-30 14:05:25,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:05:25,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:05:25,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:05:25,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:05:25,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:05:25,230 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 217 [2023-08-30 14:05:25,232 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 40 transitions, 88 flow. Second operand has 3 states, 3 states have (on average 101.33333333333333) internal successors, (304), 3 states have internal predecessors, (304), 0 states have call successors, (0), 0 states 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 14:05:25,233 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:05:25,233 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 217 [2023-08-30 14:05:25,234 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:05:25,327 INFO L130 PetriNetUnfolder]: 84/198 cut-off events. [2023-08-30 14:05:25,328 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 14:05:25,328 INFO L83 FinitePrefix]: Finished finitePrefix Result has 399 conditions, 198 events. 84/198 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 747 event pairs, 66 based on Foata normal form. 21/173 useless extension candidates. Maximal degree in co-relation 377. Up to 179 conditions per place. [2023-08-30 14:05:25,331 INFO L137 encePairwiseOnDemand]: 202/217 looper letters, 35 selfloop transitions, 2 changer transitions 0/40 dead transitions. [2023-08-30 14:05:25,331 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 40 transitions, 162 flow [2023-08-30 14:05:25,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:05:25,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:05:25,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 356 transitions. [2023-08-30 14:05:25,349 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5468509984639017 [2023-08-30 14:05:25,350 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 356 transitions. [2023-08-30 14:05:25,351 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 356 transitions. [2023-08-30 14:05:25,354 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:05:25,356 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 356 transitions. [2023-08-30 14:05:25,361 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 118.66666666666667) internal successors, (356), 3 states have internal predecessors, (356), 0 states have call successors, (0), 0 states 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 14:05:25,365 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 217.0) internal successors, (868), 4 states have internal predecessors, (868), 0 states have call successors, (0), 0 states 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 14:05:25,365 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 217.0) internal successors, (868), 4 states have internal predecessors, (868), 0 states have call successors, (0), 0 states 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 14:05:25,367 INFO L175 Difference]: Start difference. First operand has 34 places, 40 transitions, 88 flow. Second operand 3 states and 356 transitions. [2023-08-30 14:05:25,368 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 40 transitions, 162 flow [2023-08-30 14:05:25,373 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 40 transitions, 162 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 14:05:25,375 INFO L231 Difference]: Finished difference. Result has 33 places, 27 transitions, 70 flow [2023-08-30 14:05:25,376 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=217, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=70, PETRI_PLACES=33, PETRI_TRANSITIONS=27} [2023-08-30 14:05:25,381 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, -1 predicate places. [2023-08-30 14:05:25,381 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 27 transitions, 70 flow [2023-08-30 14:05:25,382 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 101.33333333333333) internal successors, (304), 3 states have internal predecessors, (304), 0 states have call successors, (0), 0 states 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 14:05:25,382 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:05:25,382 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-30 14:05:25,382 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 14:05:25,383 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-08-30 14:05:25,390 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:05:25,391 INFO L85 PathProgramCache]: Analyzing trace with hash 739928251, now seen corresponding path program 1 times [2023-08-30 14:05:25,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:05:25,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1897195852] [2023-08-30 14:05:25,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:05:25,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:05:25,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 14:05:25,424 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-30 14:05:25,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 14:05:25,452 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-30 14:05:25,453 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-30 14:05:25,454 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 13 remaining) [2023-08-30 14:05:25,455 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 13 remaining) [2023-08-30 14:05:25,456 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 13 remaining) [2023-08-30 14:05:25,456 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 13 remaining) [2023-08-30 14:05:25,456 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 13 remaining) [2023-08-30 14:05:25,457 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 13 remaining) [2023-08-30 14:05:25,457 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 13 remaining) [2023-08-30 14:05:25,457 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 13 remaining) [2023-08-30 14:05:25,457 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 13 remaining) [2023-08-30 14:05:25,458 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 13 remaining) [2023-08-30 14:05:25,458 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 13 remaining) [2023-08-30 14:05:25,458 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 13 remaining) [2023-08-30 14:05:25,458 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 13 remaining) [2023-08-30 14:05:25,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 14:05:25,459 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-08-30 14:05:25,461 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-30 14:05:25,461 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-30 14:05:25,479 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-30 14:05:25,481 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 144 places, 158 transitions, 334 flow [2023-08-30 14:05:25,514 INFO L130 PetriNetUnfolder]: 31/262 cut-off events. [2023-08-30 14:05:25,515 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-08-30 14:05:25,517 INFO L83 FinitePrefix]: Finished finitePrefix Result has 276 conditions, 262 events. 31/262 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 759 event pairs, 0 based on Foata normal form. 0/209 useless extension candidates. Maximal degree in co-relation 154. Up to 8 conditions per place. [2023-08-30 14:05:25,517 INFO L82 GeneralOperation]: Start removeDead. Operand has 144 places, 158 transitions, 334 flow [2023-08-30 14:05:25,519 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 144 places, 158 transitions, 334 flow [2023-08-30 14:05:25,519 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 14:05:25,520 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 144 places, 158 transitions, 334 flow [2023-08-30 14:05:25,520 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 144 places, 158 transitions, 334 flow [2023-08-30 14:05:25,520 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 144 places, 158 transitions, 334 flow [2023-08-30 14:05:25,543 INFO L130 PetriNetUnfolder]: 31/262 cut-off events. [2023-08-30 14:05:25,543 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-08-30 14:05:25,545 INFO L83 FinitePrefix]: Finished finitePrefix Result has 276 conditions, 262 events. 31/262 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 759 event pairs, 0 based on Foata normal form. 0/209 useless extension candidates. Maximal degree in co-relation 154. Up to 8 conditions per place. [2023-08-30 14:05:25,551 INFO L119 LiptonReduction]: Number of co-enabled transitions 11020 [2023-08-30 14:05:27,780 INFO L134 LiptonReduction]: Checked pairs total: 24300 [2023-08-30 14:05:27,780 INFO L136 LiptonReduction]: Total number of compositions: 123 [2023-08-30 14:05:27,783 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 14:05:27,784 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;@54b22e22, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 14:05:27,784 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2023-08-30 14:05:27,786 INFO L130 PetriNetUnfolder]: 3/16 cut-off events. [2023-08-30 14:05:27,786 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 14:05:27,787 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:05:27,787 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 14:05:27,787 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-08-30 14:05:27,787 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:05:27,788 INFO L85 PathProgramCache]: Analyzing trace with hash 745956988, now seen corresponding path program 1 times [2023-08-30 14:05:27,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:05:27,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2144383699] [2023-08-30 14:05:27,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:05:27,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:05:27,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:05:27,867 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 14:05:27,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:05:27,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2144383699] [2023-08-30 14:05:27,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2144383699] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:05:27,868 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:05:27,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 14:05:27,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301410939] [2023-08-30 14:05:27,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:05:27,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:05:27,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:05:27,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:05:27,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:05:27,880 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 281 [2023-08-30 14:05:27,881 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 68 transitions, 154 flow. Second operand has 3 states, 3 states have (on average 133.33333333333334) internal successors, (400), 3 states have internal predecessors, (400), 0 states have call successors, (0), 0 states 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 14:05:27,881 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:05:27,881 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 281 [2023-08-30 14:05:27,881 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:05:28,380 INFO L130 PetriNetUnfolder]: 3769/6462 cut-off events. [2023-08-30 14:05:28,381 INFO L131 PetriNetUnfolder]: For 73/73 co-relation queries the response was YES. [2023-08-30 14:05:28,387 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12592 conditions, 6462 events. 3769/6462 cut-off events. For 73/73 co-relation queries the response was YES. Maximal size of possible extension queue 305. Compared 44365 event pairs, 1752 based on Foata normal form. 972/5320 useless extension candidates. Maximal degree in co-relation 1438. Up to 6010 conditions per place. [2023-08-30 14:05:28,413 INFO L137 encePairwiseOnDemand]: 261/281 looper letters, 56 selfloop transitions, 2 changer transitions 0/67 dead transitions. [2023-08-30 14:05:28,413 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 67 transitions, 268 flow [2023-08-30 14:05:28,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:05:28,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:05:28,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 478 transitions. [2023-08-30 14:05:28,416 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5670225385527876 [2023-08-30 14:05:28,416 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 478 transitions. [2023-08-30 14:05:28,416 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 478 transitions. [2023-08-30 14:05:28,416 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:05:28,416 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 478 transitions. [2023-08-30 14:05:28,417 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 159.33333333333334) internal successors, (478), 3 states have internal predecessors, (478), 0 states have call successors, (0), 0 states 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 14:05:28,431 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 281.0) internal successors, (1124), 4 states have internal predecessors, (1124), 0 states have call successors, (0), 0 states 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 14:05:28,431 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 281.0) internal successors, (1124), 4 states have internal predecessors, (1124), 0 states have call successors, (0), 0 states 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 14:05:28,432 INFO L175 Difference]: Start difference. First operand has 56 places, 68 transitions, 154 flow. Second operand 3 states and 478 transitions. [2023-08-30 14:05:28,432 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 67 transitions, 268 flow [2023-08-30 14:05:28,433 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 67 transitions, 268 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 14:05:28,434 INFO L231 Difference]: Finished difference. Result has 58 places, 53 transitions, 138 flow [2023-08-30 14:05:28,434 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=281, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=138, PETRI_PLACES=58, PETRI_TRANSITIONS=53} [2023-08-30 14:05:28,435 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 2 predicate places. [2023-08-30 14:05:28,435 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 53 transitions, 138 flow [2023-08-30 14:05:28,436 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 133.33333333333334) internal successors, (400), 3 states have internal predecessors, (400), 0 states have call successors, (0), 0 states 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 14:05:28,436 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:05:28,436 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:05:28,436 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-30 14:05:28,437 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-08-30 14:05:28,437 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:05:28,437 INFO L85 PathProgramCache]: Analyzing trace with hash -386114503, now seen corresponding path program 1 times [2023-08-30 14:05:28,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:05:28,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326534230] [2023-08-30 14:05:28,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:05:28,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:05:28,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:05:28,506 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 14:05:28,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:05:28,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [326534230] [2023-08-30 14:05:28,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [326534230] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:05:28,507 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:05:28,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 14:05:28,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054522932] [2023-08-30 14:05:28,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:05:28,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:05:28,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:05:28,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:05:28,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:05:28,524 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 281 [2023-08-30 14:05:28,524 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 53 transitions, 138 flow. Second operand has 3 states, 3 states have (on average 133.0) internal successors, (399), 3 states have internal predecessors, (399), 0 states have call successors, (0), 0 states 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 14:05:28,525 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:05:28,525 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 281 [2023-08-30 14:05:28,525 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:05:28,993 INFO L130 PetriNetUnfolder]: 3385/5731 cut-off events. [2023-08-30 14:05:28,993 INFO L131 PetriNetUnfolder]: For 434/434 co-relation queries the response was YES. [2023-08-30 14:05:28,999 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11946 conditions, 5731 events. 3385/5731 cut-off events. For 434/434 co-relation queries the response was YES. Maximal size of possible extension queue 286. Compared 37799 event pairs, 1220 based on Foata normal form. 0/4133 useless extension candidates. Maximal degree in co-relation 11858. Up to 5071 conditions per place. [2023-08-30 14:05:29,023 INFO L137 encePairwiseOnDemand]: 274/281 looper letters, 60 selfloop transitions, 3 changer transitions 0/72 dead transitions. [2023-08-30 14:05:29,023 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 72 transitions, 318 flow [2023-08-30 14:05:29,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:05:29,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:05:29,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 458 transitions. [2023-08-30 14:05:29,026 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5432977461447213 [2023-08-30 14:05:29,026 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 458 transitions. [2023-08-30 14:05:29,027 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 458 transitions. [2023-08-30 14:05:29,030 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:05:29,030 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 458 transitions. [2023-08-30 14:05:29,032 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 152.66666666666666) internal successors, (458), 3 states have internal predecessors, (458), 0 states have call successors, (0), 0 states 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 14:05:29,033 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 281.0) internal successors, (1124), 4 states have internal predecessors, (1124), 0 states have call successors, (0), 0 states 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 14:05:29,034 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 281.0) internal successors, (1124), 4 states have internal predecessors, (1124), 0 states have call successors, (0), 0 states 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 14:05:29,034 INFO L175 Difference]: Start difference. First operand has 58 places, 53 transitions, 138 flow. Second operand 3 states and 458 transitions. [2023-08-30 14:05:29,034 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 72 transitions, 318 flow [2023-08-30 14:05:29,038 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 72 transitions, 315 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 14:05:29,040 INFO L231 Difference]: Finished difference. Result has 60 places, 55 transitions, 161 flow [2023-08-30 14:05:29,040 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=281, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=161, PETRI_PLACES=60, PETRI_TRANSITIONS=55} [2023-08-30 14:05:29,042 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 4 predicate places. [2023-08-30 14:05:29,042 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 55 transitions, 161 flow [2023-08-30 14:05:29,043 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 133.0) internal successors, (399), 3 states have internal predecessors, (399), 0 states have call successors, (0), 0 states 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 14:05:29,043 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:05:29,043 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2023-08-30 14:05:29,043 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-30 14:05:29,044 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-08-30 14:05:29,044 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:05:29,044 INFO L85 PathProgramCache]: Analyzing trace with hash -1454167468, now seen corresponding path program 1 times [2023-08-30 14:05:29,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:05:29,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090077884] [2023-08-30 14:05:29,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:05:29,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:05:29,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:05:29,116 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 14:05:29,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:05:29,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2090077884] [2023-08-30 14:05:29,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2090077884] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:05:29,117 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:05:29,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 14:05:29,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140317638] [2023-08-30 14:05:29,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:05:29,118 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:05:29,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:05:29,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:05:29,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:05:29,128 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 281 [2023-08-30 14:05:29,128 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 55 transitions, 161 flow. Second operand has 3 states, 3 states have (on average 134.33333333333334) internal successors, (403), 3 states have internal predecessors, (403), 0 states have call successors, (0), 0 states 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 14:05:29,128 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:05:29,129 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 281 [2023-08-30 14:05:29,129 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:05:29,544 INFO L130 PetriNetUnfolder]: 3084/5231 cut-off events. [2023-08-30 14:05:29,544 INFO L131 PetriNetUnfolder]: For 792/799 co-relation queries the response was YES. [2023-08-30 14:05:29,550 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11481 conditions, 5231 events. 3084/5231 cut-off events. For 792/799 co-relation queries the response was YES. Maximal size of possible extension queue 253. Compared 34013 event pairs, 2989 based on Foata normal form. 0/4037 useless extension candidates. Maximal degree in co-relation 9247. Up to 4978 conditions per place. [2023-08-30 14:05:29,570 INFO L137 encePairwiseOnDemand]: 279/281 looper letters, 44 selfloop transitions, 1 changer transitions 0/54 dead transitions. [2023-08-30 14:05:29,571 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 54 transitions, 247 flow [2023-08-30 14:05:29,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:05:29,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:05:29,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 439 transitions. [2023-08-30 14:05:29,573 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5207591933570581 [2023-08-30 14:05:29,573 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 439 transitions. [2023-08-30 14:05:29,573 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 439 transitions. [2023-08-30 14:05:29,573 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:05:29,574 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 439 transitions. [2023-08-30 14:05:29,575 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 146.33333333333334) internal successors, (439), 3 states have internal predecessors, (439), 0 states have call successors, (0), 0 states 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 14:05:29,576 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 281.0) internal successors, (1124), 4 states have internal predecessors, (1124), 0 states have call successors, (0), 0 states 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 14:05:29,577 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 281.0) internal successors, (1124), 4 states have internal predecessors, (1124), 0 states have call successors, (0), 0 states 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 14:05:29,577 INFO L175 Difference]: Start difference. First operand has 60 places, 55 transitions, 161 flow. Second operand 3 states and 439 transitions. [2023-08-30 14:05:29,577 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 54 transitions, 247 flow [2023-08-30 14:05:29,579 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 54 transitions, 244 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 14:05:29,580 INFO L231 Difference]: Finished difference. Result has 60 places, 54 transitions, 156 flow [2023-08-30 14:05:29,580 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=281, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=156, PETRI_PLACES=60, PETRI_TRANSITIONS=54} [2023-08-30 14:05:29,580 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 4 predicate places. [2023-08-30 14:05:29,581 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 54 transitions, 156 flow [2023-08-30 14:05:29,581 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 134.33333333333334) internal successors, (403), 3 states have internal predecessors, (403), 0 states have call successors, (0), 0 states 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 14:05:29,581 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:05:29,581 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2023-08-30 14:05:29,582 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-30 14:05:29,582 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-08-30 14:05:29,582 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:05:29,582 INFO L85 PathProgramCache]: Analyzing trace with hash -1454167427, now seen corresponding path program 1 times [2023-08-30 14:05:29,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:05:29,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1823303459] [2023-08-30 14:05:29,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:05:29,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:05:29,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:05:29,612 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 14:05:29,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:05:29,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1823303459] [2023-08-30 14:05:29,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1823303459] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:05:29,613 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:05:29,613 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 14:05:29,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128568583] [2023-08-30 14:05:29,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:05:29,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:05:29,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:05:29,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:05:29,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:05:29,622 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 281 [2023-08-30 14:05:29,623 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 54 transitions, 156 flow. Second operand has 3 states, 3 states have (on average 133.33333333333334) internal successors, (400), 3 states have internal predecessors, (400), 0 states have call successors, (0), 0 states 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 14:05:29,623 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:05:29,623 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 281 [2023-08-30 14:05:29,623 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:05:30,013 INFO L130 PetriNetUnfolder]: 2783/4747 cut-off events. [2023-08-30 14:05:30,013 INFO L131 PetriNetUnfolder]: For 700/703 co-relation queries the response was YES. [2023-08-30 14:05:30,021 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10245 conditions, 4747 events. 2783/4747 cut-off events. For 700/703 co-relation queries the response was YES. Maximal size of possible extension queue 225. Compared 30314 event pairs, 1229 based on Foata normal form. 1/3812 useless extension candidates. Maximal degree in co-relation 10233. Up to 3699 conditions per place. [2023-08-30 14:05:30,074 INFO L137 encePairwiseOnDemand]: 277/281 looper letters, 68 selfloop transitions, 4 changer transitions 0/81 dead transitions. [2023-08-30 14:05:30,074 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 81 transitions, 368 flow [2023-08-30 14:05:30,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:05:30,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:05:30,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 461 transitions. [2023-08-30 14:05:30,076 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5468564650059312 [2023-08-30 14:05:30,076 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 461 transitions. [2023-08-30 14:05:30,076 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 461 transitions. [2023-08-30 14:05:30,076 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:05:30,076 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 461 transitions. [2023-08-30 14:05:30,077 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 153.66666666666666) internal successors, (461), 3 states have internal predecessors, (461), 0 states have call successors, (0), 0 states 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 14:05:30,079 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 281.0) internal successors, (1124), 4 states have internal predecessors, (1124), 0 states have call successors, (0), 0 states 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 14:05:30,079 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 281.0) internal successors, (1124), 4 states have internal predecessors, (1124), 0 states have call successors, (0), 0 states 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 14:05:30,079 INFO L175 Difference]: Start difference. First operand has 60 places, 54 transitions, 156 flow. Second operand 3 states and 461 transitions. [2023-08-30 14:05:30,079 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 81 transitions, 368 flow [2023-08-30 14:05:30,081 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 81 transitions, 367 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 14:05:30,082 INFO L231 Difference]: Finished difference. Result has 61 places, 54 transitions, 167 flow [2023-08-30 14:05:30,082 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=281, PETRI_DIFFERENCE_MINUEND_FLOW=151, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=167, PETRI_PLACES=61, PETRI_TRANSITIONS=54} [2023-08-30 14:05:30,082 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 5 predicate places. [2023-08-30 14:05:30,083 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 54 transitions, 167 flow [2023-08-30 14:05:30,083 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 133.33333333333334) internal successors, (400), 3 states have internal predecessors, (400), 0 states have call successors, (0), 0 states 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 14:05:30,083 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:05:30,083 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-30 14:05:30,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-30 14:05:30,083 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-08-30 14:05:30,084 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:05:30,084 INFO L85 PathProgramCache]: Analyzing trace with hash -1590501435, now seen corresponding path program 1 times [2023-08-30 14:05:30,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:05:30,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247135364] [2023-08-30 14:05:30,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:05:30,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:05:30,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 14:05:30,096 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-30 14:05:30,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 14:05:30,108 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-30 14:05:30,108 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-30 14:05:30,108 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 17 remaining) [2023-08-30 14:05:30,108 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 17 remaining) [2023-08-30 14:05:30,109 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 17 remaining) [2023-08-30 14:05:30,109 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 17 remaining) [2023-08-30 14:05:30,109 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 17 remaining) [2023-08-30 14:05:30,109 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 17 remaining) [2023-08-30 14:05:30,109 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 17 remaining) [2023-08-30 14:05:30,109 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 17 remaining) [2023-08-30 14:05:30,110 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 17 remaining) [2023-08-30 14:05:30,110 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 17 remaining) [2023-08-30 14:05:30,110 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 17 remaining) [2023-08-30 14:05:30,110 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 17 remaining) [2023-08-30 14:05:30,110 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 17 remaining) [2023-08-30 14:05:30,110 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 17 remaining) [2023-08-30 14:05:30,111 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 17 remaining) [2023-08-30 14:05:30,111 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 17 remaining) [2023-08-30 14:05:30,111 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 17 remaining) [2023-08-30 14:05:30,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-30 14:05:30,111 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2023-08-30 14:05:30,112 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-30 14:05:30,112 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-08-30 14:05:30,143 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-30 14:05:30,149 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 179 places, 198 transitions, 426 flow [2023-08-30 14:05:30,190 INFO L130 PetriNetUnfolder]: 50/411 cut-off events. [2023-08-30 14:05:30,191 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-08-30 14:05:30,194 INFO L83 FinitePrefix]: Finished finitePrefix Result has 439 conditions, 411 events. 50/411 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1370 event pairs, 1 based on Foata normal form. 0/325 useless extension candidates. Maximal degree in co-relation 270. Up to 16 conditions per place. [2023-08-30 14:05:30,194 INFO L82 GeneralOperation]: Start removeDead. Operand has 179 places, 198 transitions, 426 flow [2023-08-30 14:05:30,197 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 179 places, 198 transitions, 426 flow [2023-08-30 14:05:30,197 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 14:05:30,197 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 179 places, 198 transitions, 426 flow [2023-08-30 14:05:30,197 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 179 places, 198 transitions, 426 flow [2023-08-30 14:05:30,200 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 179 places, 198 transitions, 426 flow [2023-08-30 14:05:30,237 INFO L130 PetriNetUnfolder]: 50/411 cut-off events. [2023-08-30 14:05:30,237 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-08-30 14:05:30,241 INFO L83 FinitePrefix]: Finished finitePrefix Result has 439 conditions, 411 events. 50/411 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1370 event pairs, 1 based on Foata normal form. 0/325 useless extension candidates. Maximal degree in co-relation 270. Up to 16 conditions per place. [2023-08-30 14:05:30,255 INFO L119 LiptonReduction]: Number of co-enabled transitions 21204 [2023-08-30 14:05:32,755 INFO L134 LiptonReduction]: Checked pairs total: 52638 [2023-08-30 14:05:32,755 INFO L136 LiptonReduction]: Total number of compositions: 149 [2023-08-30 14:05:32,757 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 14:05:32,758 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;@54b22e22, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 14:05:32,758 INFO L358 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2023-08-30 14:05:32,760 INFO L130 PetriNetUnfolder]: 1/12 cut-off events. [2023-08-30 14:05:32,760 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 14:05:32,761 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:05:32,761 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 14:05:32,761 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-30 14:05:32,761 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:05:32,761 INFO L85 PathProgramCache]: Analyzing trace with hash 1115065324, now seen corresponding path program 1 times [2023-08-30 14:05:32,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:05:32,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535374182] [2023-08-30 14:05:32,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:05:32,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:05:32,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:05:32,789 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 14:05:32,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:05:32,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [535374182] [2023-08-30 14:05:32,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [535374182] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:05:32,790 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:05:32,791 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 14:05:32,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033151936] [2023-08-30 14:05:32,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:05:32,791 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:05:32,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:05:32,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:05:32,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:05:32,801 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 164 out of 347 [2023-08-30 14:05:32,802 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 89 transitions, 208 flow. Second operand has 3 states, 3 states have (on average 165.33333333333334) internal successors, (496), 3 states have internal predecessors, (496), 0 states have call successors, (0), 0 states 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 14:05:32,802 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:05:32,802 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 164 of 347 [2023-08-30 14:05:32,803 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:05:40,412 INFO L130 PetriNetUnfolder]: 104640/146530 cut-off events. [2023-08-30 14:05:40,412 INFO L131 PetriNetUnfolder]: For 2556/2556 co-relation queries the response was YES. [2023-08-30 14:05:40,623 INFO L83 FinitePrefix]: Finished finitePrefix Result has 293414 conditions, 146530 events. 104640/146530 cut-off events. For 2556/2556 co-relation queries the response was YES. Maximal size of possible extension queue 4168. Compared 1062529 event pairs, 101587 based on Foata normal form. 14040/113448 useless extension candidates. Maximal degree in co-relation 136813. Up to 145181 conditions per place. [2023-08-30 14:05:41,527 INFO L137 encePairwiseOnDemand]: 322/347 looper letters, 74 selfloop transitions, 2 changer transitions 0/84 dead transitions. [2023-08-30 14:05:41,527 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 84 transitions, 350 flow [2023-08-30 14:05:41,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:05:41,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:05:41,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 597 transitions. [2023-08-30 14:05:41,533 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5734870317002881 [2023-08-30 14:05:41,534 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 597 transitions. [2023-08-30 14:05:41,534 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 597 transitions. [2023-08-30 14:05:41,534 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:05:41,534 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 597 transitions. [2023-08-30 14:05:41,537 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 199.0) internal successors, (597), 3 states have internal predecessors, (597), 0 states have call successors, (0), 0 states 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 14:05:41,539 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 347.0) internal successors, (1388), 4 states have internal predecessors, (1388), 0 states have call successors, (0), 0 states 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 14:05:41,540 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 347.0) internal successors, (1388), 4 states have internal predecessors, (1388), 0 states have call successors, (0), 0 states 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 14:05:41,540 INFO L175 Difference]: Start difference. First operand has 73 places, 89 transitions, 208 flow. Second operand 3 states and 597 transitions. [2023-08-30 14:05:41,540 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 84 transitions, 350 flow [2023-08-30 14:05:41,553 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 84 transitions, 350 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 14:05:41,555 INFO L231 Difference]: Finished difference. Result has 76 places, 70 transitions, 184 flow [2023-08-30 14:05:41,555 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=347, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=73, 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=184, PETRI_PLACES=76, PETRI_TRANSITIONS=70} [2023-08-30 14:05:41,556 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, 3 predicate places. [2023-08-30 14:05:41,556 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 70 transitions, 184 flow [2023-08-30 14:05:41,556 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 165.33333333333334) internal successors, (496), 3 states have internal predecessors, (496), 0 states have call successors, (0), 0 states 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 14:05:41,556 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:05:41,557 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:05:41,557 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-30 14:05:41,557 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-30 14:05:41,557 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:05:41,558 INFO L85 PathProgramCache]: Analyzing trace with hash 2141751053, now seen corresponding path program 1 times [2023-08-30 14:05:41,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:05:41,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121140569] [2023-08-30 14:05:41,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:05:41,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:05:41,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:05:41,601 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 14:05:41,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:05:41,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2121140569] [2023-08-30 14:05:41,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2121140569] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:05:41,602 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:05:41,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 14:05:41,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962711883] [2023-08-30 14:05:41,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:05:41,602 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:05:41,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:05:41,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:05:41,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:05:41,617 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 161 out of 347 [2023-08-30 14:05:41,619 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 70 transitions, 184 flow. Second operand has 3 states, 3 states have (on average 162.66666666666666) internal successors, (488), 3 states have internal predecessors, (488), 0 states have call successors, (0), 0 states 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 14:05:41,619 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:05:41,619 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 161 of 347 [2023-08-30 14:05:41,619 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:05:48,434 INFO L130 PetriNetUnfolder]: 100162/140041 cut-off events. [2023-08-30 14:05:48,434 INFO L131 PetriNetUnfolder]: For 9119/9119 co-relation queries the response was YES. [2023-08-30 14:05:48,652 INFO L83 FinitePrefix]: Finished finitePrefix Result has 293649 conditions, 140041 events. 100162/140041 cut-off events. For 9119/9119 co-relation queries the response was YES. Maximal size of possible extension queue 4195. Compared 1008021 event pairs, 47469 based on Foata normal form. 0/99288 useless extension candidates. Maximal degree in co-relation 293560. Up to 137165 conditions per place. [2023-08-30 14:05:49,068 INFO L137 encePairwiseOnDemand]: 337/347 looper letters, 82 selfloop transitions, 4 changer transitions 0/94 dead transitions. [2023-08-30 14:05:49,068 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 94 transitions, 427 flow [2023-08-30 14:05:49,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:05:49,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:05:49,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 573 transitions. [2023-08-30 14:05:49,070 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5504322766570605 [2023-08-30 14:05:49,070 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 573 transitions. [2023-08-30 14:05:49,070 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 573 transitions. [2023-08-30 14:05:49,070 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:05:49,071 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 573 transitions. [2023-08-30 14:05:49,072 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 191.0) internal successors, (573), 3 states have internal predecessors, (573), 0 states have call successors, (0), 0 states 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 14:05:49,074 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 347.0) internal successors, (1388), 4 states have internal predecessors, (1388), 0 states have call successors, (0), 0 states 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 14:05:49,074 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 347.0) internal successors, (1388), 4 states have internal predecessors, (1388), 0 states have call successors, (0), 0 states 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 14:05:49,074 INFO L175 Difference]: Start difference. First operand has 76 places, 70 transitions, 184 flow. Second operand 3 states and 573 transitions. [2023-08-30 14:05:49,074 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 94 transitions, 427 flow [2023-08-30 14:05:49,081 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 94 transitions, 424 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 14:05:49,083 INFO L231 Difference]: Finished difference. Result has 78 places, 73 transitions, 218 flow [2023-08-30 14:05:49,083 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=347, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=218, PETRI_PLACES=78, PETRI_TRANSITIONS=73} [2023-08-30 14:05:49,084 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, 5 predicate places. [2023-08-30 14:05:49,084 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 73 transitions, 218 flow [2023-08-30 14:05:49,084 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 162.66666666666666) internal successors, (488), 3 states have internal predecessors, (488), 0 states have call successors, (0), 0 states 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 14:05:49,084 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:05:49,084 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2023-08-30 14:05:49,084 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-30 14:05:49,085 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-30 14:05:49,085 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:05:49,085 INFO L85 PathProgramCache]: Analyzing trace with hash -813195816, now seen corresponding path program 1 times [2023-08-30 14:05:49,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:05:49,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249149077] [2023-08-30 14:05:49,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:05:49,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:05:49,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:05:49,111 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 14:05:49,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:05:49,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1249149077] [2023-08-30 14:05:49,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1249149077] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:05:49,112 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:05:49,112 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 14:05:49,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016663707] [2023-08-30 14:05:49,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:05:49,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:05:49,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:05:49,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:05:49,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:05:49,125 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 347 [2023-08-30 14:05:49,126 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 73 transitions, 218 flow. Second operand has 3 states, 3 states have (on average 165.33333333333334) internal successors, (496), 3 states have internal predecessors, (496), 0 states have call successors, (0), 0 states 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 14:05:49,126 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:05:49,126 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 347 [2023-08-30 14:05:49,126 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:05:55,816 INFO L130 PetriNetUnfolder]: 91398/131287 cut-off events. [2023-08-30 14:05:55,816 INFO L131 PetriNetUnfolder]: For 17090/17090 co-relation queries the response was YES. [2023-08-30 14:05:56,015 INFO L83 FinitePrefix]: Finished finitePrefix Result has 289199 conditions, 131287 events. 91398/131287 cut-off events. For 17090/17090 co-relation queries the response was YES. Maximal size of possible extension queue 3836. Compared 1011749 event pairs, 22583 based on Foata normal form. 0/102376 useless extension candidates. Maximal degree in co-relation 182911. Up to 94229 conditions per place. [2023-08-30 14:05:56,357 INFO L137 encePairwiseOnDemand]: 343/347 looper letters, 105 selfloop transitions, 4 changer transitions 0/117 dead transitions. [2023-08-30 14:05:56,357 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 117 transitions, 549 flow [2023-08-30 14:05:56,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:05:56,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:05:56,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 592 transitions. [2023-08-30 14:05:56,359 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5686839577329491 [2023-08-30 14:05:56,359 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 592 transitions. [2023-08-30 14:05:56,359 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 592 transitions. [2023-08-30 14:05:56,360 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:05:56,360 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 592 transitions. [2023-08-30 14:05:56,361 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 197.33333333333334) internal successors, (592), 3 states have internal predecessors, (592), 0 states have call successors, (0), 0 states 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 14:05:56,363 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 347.0) internal successors, (1388), 4 states have internal predecessors, (1388), 0 states have call successors, (0), 0 states 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 14:05:56,363 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 347.0) internal successors, (1388), 4 states have internal predecessors, (1388), 0 states have call successors, (0), 0 states 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 14:05:56,363 INFO L175 Difference]: Start difference. First operand has 78 places, 73 transitions, 218 flow. Second operand 3 states and 592 transitions. [2023-08-30 14:05:56,363 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 117 transitions, 549 flow [2023-08-30 14:05:56,375 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 117 transitions, 542 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 14:05:56,377 INFO L231 Difference]: Finished difference. Result has 79 places, 73 transitions, 226 flow [2023-08-30 14:05:56,377 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=347, PETRI_DIFFERENCE_MINUEND_FLOW=210, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=226, PETRI_PLACES=79, PETRI_TRANSITIONS=73} [2023-08-30 14:05:56,377 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, 6 predicate places. [2023-08-30 14:05:56,378 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 73 transitions, 226 flow [2023-08-30 14:05:56,378 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 165.33333333333334) internal successors, (496), 3 states have internal predecessors, (496), 0 states have call successors, (0), 0 states 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 14:05:56,378 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:05:56,378 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2023-08-30 14:05:56,378 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-30 14:05:56,378 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-30 14:05:56,379 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:05:56,379 INFO L85 PathProgramCache]: Analyzing trace with hash -813195856, now seen corresponding path program 1 times [2023-08-30 14:05:56,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:05:56,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096736560] [2023-08-30 14:05:56,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:05:56,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:05:56,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:05:56,415 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 14:05:56,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:05:56,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096736560] [2023-08-30 14:05:56,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2096736560] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 14:05:56,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [248300968] [2023-08-30 14:05:56,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:05:56,416 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:05:56,416 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:05:56,421 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 14:05:56,422 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 14:05:56,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:05:56,491 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 14:05:56,492 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 14:05:56,537 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 14:05:56,537 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 14:05:56,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [248300968] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:05:56,537 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 14:05:56,537 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2023-08-30 14:05:56,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993641850] [2023-08-30 14:05:56,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:05:56,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 14:05:56,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:05:56,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 14:05:56,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-30 14:05:56,553 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 164 out of 347 [2023-08-30 14:05:56,566 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 73 transitions, 226 flow. Second operand has 4 states, 4 states have (on average 165.75) internal successors, (663), 4 states have internal predecessors, (663), 0 states have call successors, (0), 0 states 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 14:05:56,566 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:05:56,566 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 164 of 347 [2023-08-30 14:05:56,567 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:06:02,647 INFO L130 PetriNetUnfolder]: 82634/116185 cut-off events. [2023-08-30 14:06:02,647 INFO L131 PetriNetUnfolder]: For 40778/40778 co-relation queries the response was YES. [2023-08-30 14:06:02,845 INFO L83 FinitePrefix]: Finished finitePrefix Result has 266319 conditions, 116185 events. 82634/116185 cut-off events. For 40778/40778 co-relation queries the response was YES. Maximal size of possible extension queue 3221. Compared 813566 event pairs, 77899 based on Foata normal form. 3210/95499 useless extension candidates. Maximal degree in co-relation 127991. Up to 115193 conditions per place. [2023-08-30 14:06:03,159 INFO L137 encePairwiseOnDemand]: 344/347 looper letters, 73 selfloop transitions, 2 changer transitions 0/83 dead transitions. [2023-08-30 14:06:03,160 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 83 transitions, 396 flow [2023-08-30 14:06:03,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 14:06:03,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 14:06:03,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 729 transitions. [2023-08-30 14:06:03,162 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5252161383285303 [2023-08-30 14:06:03,162 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 729 transitions. [2023-08-30 14:06:03,162 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 729 transitions. [2023-08-30 14:06:03,163 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:06:03,163 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 729 transitions. [2023-08-30 14:06:03,164 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 182.25) internal successors, (729), 4 states have internal predecessors, (729), 0 states have call successors, (0), 0 states 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 14:06:03,166 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 347.0) internal successors, (1735), 5 states have internal predecessors, (1735), 0 states have call successors, (0), 0 states 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 14:06:03,166 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 347.0) internal successors, (1735), 5 states have internal predecessors, (1735), 0 states have call successors, (0), 0 states 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 14:06:03,166 INFO L175 Difference]: Start difference. First operand has 79 places, 73 transitions, 226 flow. Second operand 4 states and 729 transitions. [2023-08-30 14:06:03,166 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 83 transitions, 396 flow [2023-08-30 14:06:03,179 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 83 transitions, 392 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 14:06:03,180 INFO L231 Difference]: Finished difference. Result has 80 places, 72 transitions, 222 flow [2023-08-30 14:06:03,181 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=347, PETRI_DIFFERENCE_MINUEND_FLOW=218, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=222, PETRI_PLACES=80, PETRI_TRANSITIONS=72} [2023-08-30 14:06:03,181 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, 7 predicate places. [2023-08-30 14:06:03,181 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 72 transitions, 222 flow [2023-08-30 14:06:03,182 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 165.75) internal successors, (663), 4 states have internal predecessors, (663), 0 states have call successors, (0), 0 states 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 14:06:03,182 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:06:03,182 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:06:03,191 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 14:06:03,387 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-08-30 14:06:03,387 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-30 14:06:03,388 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:06:03,388 INFO L85 PathProgramCache]: Analyzing trace with hash -684157194, now seen corresponding path program 1 times [2023-08-30 14:06:03,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:06:03,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508533841] [2023-08-30 14:06:03,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:06:03,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:06:03,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:06:03,446 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 14:06:03,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:06:03,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508533841] [2023-08-30 14:06:03,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [508533841] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:06:03,446 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:06:03,447 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 14:06:03,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708820323] [2023-08-30 14:06:03,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:06:03,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 14:06:03,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:06:03,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 14:06:03,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 14:06:03,488 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 157 out of 347 [2023-08-30 14:06:03,489 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 72 transitions, 222 flow. Second operand has 5 states, 5 states have (on average 158.8) internal successors, (794), 5 states have internal predecessors, (794), 0 states have call successors, (0), 0 states 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 14:06:03,489 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:06:03,489 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 157 of 347 [2023-08-30 14:06:03,489 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:06:12,135 INFO L130 PetriNetUnfolder]: 114035/162847 cut-off events. [2023-08-30 14:06:12,135 INFO L131 PetriNetUnfolder]: For 40455/40455 co-relation queries the response was YES. [2023-08-30 14:06:12,437 INFO L83 FinitePrefix]: Finished finitePrefix Result has 366903 conditions, 162847 events. 114035/162847 cut-off events. For 40455/40455 co-relation queries the response was YES. Maximal size of possible extension queue 4727. Compared 1234026 event pairs, 25216 based on Foata normal form. 0/133893 useless extension candidates. Maximal degree in co-relation 366802. Up to 96061 conditions per place. [2023-08-30 14:06:12,847 INFO L137 encePairwiseOnDemand]: 327/347 looper letters, 207 selfloop transitions, 29 changer transitions 0/244 dead transitions. [2023-08-30 14:06:12,847 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 244 transitions, 1207 flow [2023-08-30 14:06:12,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 14:06:12,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 14:06:12,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1340 transitions. [2023-08-30 14:06:12,851 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5516673528200906 [2023-08-30 14:06:12,851 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1340 transitions. [2023-08-30 14:06:12,851 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1340 transitions. [2023-08-30 14:06:12,852 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:06:12,852 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1340 transitions. [2023-08-30 14:06:12,854 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 191.42857142857142) internal successors, (1340), 7 states have internal predecessors, (1340), 0 states have call successors, (0), 0 states 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 14:06:12,857 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 347.0) internal successors, (2776), 8 states have internal predecessors, (2776), 0 states have call successors, (0), 0 states 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 14:06:12,858 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 347.0) internal successors, (2776), 8 states have internal predecessors, (2776), 0 states have call successors, (0), 0 states 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 14:06:12,858 INFO L175 Difference]: Start difference. First operand has 80 places, 72 transitions, 222 flow. Second operand 7 states and 1340 transitions. [2023-08-30 14:06:12,858 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 244 transitions, 1207 flow [2023-08-30 14:06:12,868 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 244 transitions, 1201 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 14:06:12,871 INFO L231 Difference]: Finished difference. Result has 89 places, 97 transitions, 471 flow [2023-08-30 14:06:12,871 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=347, PETRI_DIFFERENCE_MINUEND_FLOW=219, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=471, PETRI_PLACES=89, PETRI_TRANSITIONS=97} [2023-08-30 14:06:12,871 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, 16 predicate places. [2023-08-30 14:06:12,872 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 97 transitions, 471 flow [2023-08-30 14:06:12,872 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 158.8) internal successors, (794), 5 states have internal predecessors, (794), 0 states have call successors, (0), 0 states 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 14:06:12,872 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:06:12,872 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:06:12,872 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-30 14:06:12,873 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-30 14:06:12,873 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:06:12,873 INFO L85 PathProgramCache]: Analyzing trace with hash -684157306, now seen corresponding path program 1 times [2023-08-30 14:06:12,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:06:12,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138431264] [2023-08-30 14:06:12,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:06:12,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:06:12,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:06:12,931 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 14:06:12,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:06:12,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138431264] [2023-08-30 14:06:12,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2138431264] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:06:12,932 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:06:12,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 14:06:12,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783365759] [2023-08-30 14:06:12,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:06:12,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 14:06:12,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:06:12,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 14:06:12,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-30 14:06:12,983 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 157 out of 347 [2023-08-30 14:06:12,984 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 97 transitions, 471 flow. Second operand has 5 states, 5 states have (on average 158.8) internal successors, (794), 5 states have internal predecessors, (794), 0 states have call successors, (0), 0 states 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 14:06:12,984 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:06:12,984 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 157 of 347 [2023-08-30 14:06:12,985 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:06:23,443 INFO L130 PetriNetUnfolder]: 118656/173374 cut-off events. [2023-08-30 14:06:23,443 INFO L131 PetriNetUnfolder]: For 152005/152005 co-relation queries the response was YES. [2023-08-30 14:06:23,958 INFO L83 FinitePrefix]: Finished finitePrefix Result has 474068 conditions, 173374 events. 118656/173374 cut-off events. For 152005/152005 co-relation queries the response was YES. Maximal size of possible extension queue 5271. Compared 1391278 event pairs, 23602 based on Foata normal form. 6693/171520 useless extension candidates. Maximal degree in co-relation 473964. Up to 110067 conditions per place. [2023-08-30 14:06:24,658 INFO L137 encePairwiseOnDemand]: 327/347 looper letters, 227 selfloop transitions, 35 changer transitions 0/270 dead transitions. [2023-08-30 14:06:24,658 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 270 transitions, 1651 flow [2023-08-30 14:06:24,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 14:06:24,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 14:06:24,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1340 transitions. [2023-08-30 14:06:24,661 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5516673528200906 [2023-08-30 14:06:24,661 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1340 transitions. [2023-08-30 14:06:24,661 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1340 transitions. [2023-08-30 14:06:24,662 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:06:24,662 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1340 transitions. [2023-08-30 14:06:24,665 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 191.42857142857142) internal successors, (1340), 7 states have internal predecessors, (1340), 0 states have call successors, (0), 0 states 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 14:06:24,668 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 347.0) internal successors, (2776), 8 states have internal predecessors, (2776), 0 states have call successors, (0), 0 states 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 14:06:24,669 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 347.0) internal successors, (2776), 8 states have internal predecessors, (2776), 0 states have call successors, (0), 0 states 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 14:06:24,669 INFO L175 Difference]: Start difference. First operand has 89 places, 97 transitions, 471 flow. Second operand 7 states and 1340 transitions. [2023-08-30 14:06:24,669 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 270 transitions, 1651 flow [2023-08-30 14:06:24,952 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 270 transitions, 1645 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 14:06:24,954 INFO L231 Difference]: Finished difference. Result has 98 places, 123 transitions, 851 flow [2023-08-30 14:06:24,954 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=347, PETRI_DIFFERENCE_MINUEND_FLOW=465, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=851, PETRI_PLACES=98, PETRI_TRANSITIONS=123} [2023-08-30 14:06:24,954 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, 25 predicate places. [2023-08-30 14:06:24,955 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 123 transitions, 851 flow [2023-08-30 14:06:24,955 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 158.8) internal successors, (794), 5 states have internal predecessors, (794), 0 states have call successors, (0), 0 states 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 14:06:24,955 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:06:24,955 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2023-08-30 14:06:24,955 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-30 14:06:24,955 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-30 14:06:24,956 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:06:24,956 INFO L85 PathProgramCache]: Analyzing trace with hash -1834230225, now seen corresponding path program 1 times [2023-08-30 14:06:24,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:06:24,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1016565231] [2023-08-30 14:06:24,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:06:24,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:06:24,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 14:06:24,967 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-30 14:06:24,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 14:06:24,977 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-30 14:06:24,977 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-30 14:06:24,978 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (20 of 21 remaining) [2023-08-30 14:06:24,978 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 21 remaining) [2023-08-30 14:06:24,978 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 21 remaining) [2023-08-30 14:06:24,978 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 21 remaining) [2023-08-30 14:06:24,978 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 21 remaining) [2023-08-30 14:06:24,978 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 21 remaining) [2023-08-30 14:06:24,979 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 21 remaining) [2023-08-30 14:06:24,979 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 21 remaining) [2023-08-30 14:06:24,979 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 21 remaining) [2023-08-30 14:06:24,979 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 21 remaining) [2023-08-30 14:06:24,979 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 21 remaining) [2023-08-30 14:06:24,979 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 21 remaining) [2023-08-30 14:06:24,979 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 21 remaining) [2023-08-30 14:06:24,980 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 21 remaining) [2023-08-30 14:06:24,980 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 21 remaining) [2023-08-30 14:06:24,980 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 21 remaining) [2023-08-30 14:06:24,980 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 21 remaining) [2023-08-30 14:06:24,980 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 21 remaining) [2023-08-30 14:06:24,980 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 21 remaining) [2023-08-30 14:06:24,980 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 21 remaining) [2023-08-30 14:06:24,981 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 21 remaining) [2023-08-30 14:06:24,981 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-30 14:06:24,981 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:06:24,982 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-30 14:06:24,982 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-08-30 14:06:25,000 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-08-30 14:06:25,003 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 214 places, 238 transitions, 520 flow [2023-08-30 14:06:25,062 INFO L130 PetriNetUnfolder]: 81/640 cut-off events. [2023-08-30 14:06:25,062 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2023-08-30 14:06:25,069 INFO L83 FinitePrefix]: Finished finitePrefix Result has 695 conditions, 640 events. 81/640 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2484 event pairs, 6 based on Foata normal form. 0/505 useless extension candidates. Maximal degree in co-relation 431. Up to 32 conditions per place. [2023-08-30 14:06:25,070 INFO L82 GeneralOperation]: Start removeDead. Operand has 214 places, 238 transitions, 520 flow [2023-08-30 14:06:25,074 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 214 places, 238 transitions, 520 flow [2023-08-30 14:06:25,074 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 14:06:25,074 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 214 places, 238 transitions, 520 flow [2023-08-30 14:06:25,074 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 214 places, 238 transitions, 520 flow [2023-08-30 14:06:25,074 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 214 places, 238 transitions, 520 flow [2023-08-30 14:06:25,132 INFO L130 PetriNetUnfolder]: 81/640 cut-off events. [2023-08-30 14:06:25,132 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2023-08-30 14:06:25,139 INFO L83 FinitePrefix]: Finished finitePrefix Result has 695 conditions, 640 events. 81/640 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2484 event pairs, 6 based on Foata normal form. 0/505 useless extension candidates. Maximal degree in co-relation 431. Up to 32 conditions per place. [2023-08-30 14:06:25,158 INFO L119 LiptonReduction]: Number of co-enabled transitions 34504 [2023-08-30 14:06:27,728 INFO L134 LiptonReduction]: Checked pairs total: 88680 [2023-08-30 14:06:27,729 INFO L136 LiptonReduction]: Total number of compositions: 173 [2023-08-30 14:06:27,730 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 14:06:27,731 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;@54b22e22, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 14:06:27,731 INFO L358 AbstractCegarLoop]: Starting to check reachability of 25 error locations. [2023-08-30 14:06:27,732 INFO L130 PetriNetUnfolder]: 3/16 cut-off events. [2023-08-30 14:06:27,732 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 14:06:27,732 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:06:27,732 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 14:06:27,733 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-08-30 14:06:27,733 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:06:27,733 INFO L85 PathProgramCache]: Analyzing trace with hash 1545519304, now seen corresponding path program 1 times [2023-08-30 14:06:27,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:06:27,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512596651] [2023-08-30 14:06:27,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:06:27,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:06:27,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:06:27,760 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 14:06:27,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:06:27,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512596651] [2023-08-30 14:06:27,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1512596651] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:06:27,761 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:06:27,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 14:06:27,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047201744] [2023-08-30 14:06:27,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:06:27,763 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:06:27,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:06:27,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:06:27,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:06:27,771 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 196 out of 411 [2023-08-30 14:06:27,771 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 114 transitions, 272 flow. Second operand has 3 states, 3 states have (on average 197.33333333333334) internal successors, (592), 3 states have internal predecessors, (592), 0 states have call successors, (0), 0 states 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 14:06:27,771 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:06:27,772 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 196 of 411 [2023-08-30 14:06:27,772 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand