./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/goblint-regression/06-symbeq_07-tricky_address2.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/06-symbeq_07-tricky_address2.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 c18dd13658bb5739ed2db8c4c80ae330682b7c3cebd2ad85657518c27ca325b9 --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 13:48:39,320 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 13:48:39,322 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 13:48:39,355 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 13:48:39,357 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 13:48:39,359 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 13:48:39,360 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 13:48:39,362 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 13:48:39,364 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 13:48:39,367 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 13:48:39,368 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 13:48:39,369 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 13:48:39,370 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 13:48:39,371 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 13:48:39,372 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 13:48:39,376 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 13:48:39,376 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 13:48:39,377 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 13:48:39,379 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 13:48:39,386 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 13:48:39,388 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 13:48:39,389 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 13:48:39,389 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 13:48:39,390 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 13:48:39,392 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 13:48:39,394 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 13:48:39,394 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 13:48:39,395 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 13:48:39,396 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 13:48:39,397 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 13:48:39,397 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 13:48:39,399 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 13:48:39,400 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 13:48:39,401 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 13:48:39,401 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 13:48:39,402 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 13:48:39,402 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 13:48:39,402 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 13:48:39,402 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 13:48:39,403 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 13:48:39,403 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 13:48:39,405 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-08-30 13:48:39,427 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 13:48:39,427 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 13:48:39,428 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 13:48:39,428 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 13:48:39,429 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 13:48:39,429 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 13:48:39,429 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 13:48:39,429 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 13:48:39,430 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 13:48:39,430 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 13:48:39,430 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 13:48:39,431 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 13:48:39,431 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 13:48:39,431 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 13:48:39,431 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 13:48:39,431 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 13:48:39,431 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 13:48:39,431 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 13:48:39,432 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-08-30 13:48:39,432 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 13:48:39,432 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 13:48:39,432 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 13:48:39,432 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 13:48:39,432 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 13:48:39,432 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 13:48:39,433 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 13:48:39,433 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 13:48:39,433 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 13:48:39,433 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 13:48:39,433 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 13:48:39,433 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 13:48:39,433 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 13:48:39,434 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 13:48:39,434 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 13:48:39,434 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 13:48:39,434 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 13:48:39,434 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 13:48:39,434 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c18dd13658bb5739ed2db8c4c80ae330682b7c3cebd2ad85657518c27ca325b9 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-30 13:48:39,643 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 13:48:39,662 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 13:48:39,664 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 13:48:39,665 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 13:48:39,665 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 13:48:39,666 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/06-symbeq_07-tricky_address2.i [2023-08-30 13:48:40,555 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 13:48:40,798 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 13:48:40,799 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/06-symbeq_07-tricky_address2.i [2023-08-30 13:48:40,811 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e90933b8a/a49f1dba097348169d9ca749f93f4bb0/FLAG42adbcc87 [2023-08-30 13:48:40,831 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e90933b8a/a49f1dba097348169d9ca749f93f4bb0 [2023-08-30 13:48:40,833 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 13:48:40,834 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 13:48:40,837 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 13:48:40,837 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 13:48:40,840 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 13:48:40,840 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 01:48:40" (1/1) ... [2023-08-30 13:48:40,842 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@693dd204 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:48:40, skipping insertion in model container [2023-08-30 13:48:40,842 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 01:48:40" (1/1) ... [2023-08-30 13:48:40,847 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 13:48:40,887 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 13:48:41,186 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 13:48:41,203 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 13:48:41,243 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 13:48:41,307 INFO L208 MainTranslator]: Completed translation [2023-08-30 13:48:41,308 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:48:41 WrapperNode [2023-08-30 13:48:41,308 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 13:48:41,308 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 13:48:41,309 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 13:48:41,309 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 13:48:41,313 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:48:41" (1/1) ... [2023-08-30 13:48:41,322 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:48:41" (1/1) ... [2023-08-30 13:48:41,343 INFO L138 Inliner]: procedures = 264, calls = 16, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 72 [2023-08-30 13:48:41,343 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 13:48:41,344 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 13:48:41,344 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 13:48:41,344 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 13:48:41,350 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:48:41" (1/1) ... [2023-08-30 13:48:41,350 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:48:41" (1/1) ... [2023-08-30 13:48:41,361 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:48:41" (1/1) ... [2023-08-30 13:48:41,362 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:48:41" (1/1) ... [2023-08-30 13:48:41,365 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:48:41" (1/1) ... [2023-08-30 13:48:41,374 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:48:41" (1/1) ... [2023-08-30 13:48:41,375 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:48:41" (1/1) ... [2023-08-30 13:48:41,378 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:48:41" (1/1) ... [2023-08-30 13:48:41,380 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 13:48:41,383 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 13:48:41,383 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 13:48:41,383 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 13:48:41,384 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:48:41" (1/1) ... [2023-08-30 13:48:41,389 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 13:48:41,396 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 13:48:41,405 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 13:48:41,414 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 13:48:41,433 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 13:48:41,434 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 13:48:41,434 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 13:48:41,434 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 13:48:41,434 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-30 13:48:41,434 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 13:48:41,435 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-30 13:48:41,435 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-30 13:48:41,435 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 13:48:41,435 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 13:48:41,436 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 13:48:41,541 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 13:48:41,542 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 13:48:41,679 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 13:48:41,683 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 13:48:41,683 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-08-30 13:48:41,684 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 01:48:41 BoogieIcfgContainer [2023-08-30 13:48:41,684 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 13:48:41,686 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 13:48:41,686 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 13:48:41,688 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 13:48:41,688 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 01:48:40" (1/3) ... [2023-08-30 13:48:41,688 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3891ae3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 01:48:41, skipping insertion in model container [2023-08-30 13:48:41,689 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:48:41" (2/3) ... [2023-08-30 13:48:41,689 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3891ae3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 01:48:41, skipping insertion in model container [2023-08-30 13:48:41,689 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 01:48:41" (3/3) ... [2023-08-30 13:48:41,690 INFO L112 eAbstractionObserver]: Analyzing ICFG 06-symbeq_07-tricky_address2.i [2023-08-30 13:48:41,695 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 13:48:41,701 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 13:48:41,701 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-08-30 13:48:41,701 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 13:48:41,753 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-30 13:48:41,784 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 82 places, 82 transitions, 169 flow [2023-08-30 13:48:41,824 INFO L130 PetriNetUnfolder]: 4/81 cut-off events. [2023-08-30 13:48:41,824 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 13:48:41,827 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85 conditions, 81 events. 4/81 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 70 event pairs, 0 based on Foata normal form. 0/71 useless extension candidates. Maximal degree in co-relation 45. Up to 2 conditions per place. [2023-08-30 13:48:41,828 INFO L82 GeneralOperation]: Start removeDead. Operand has 82 places, 82 transitions, 169 flow [2023-08-30 13:48:41,831 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 81 places, 81 transitions, 165 flow [2023-08-30 13:48:41,833 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 13:48:41,843 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 81 places, 81 transitions, 165 flow [2023-08-30 13:48:41,845 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 81 places, 81 transitions, 165 flow [2023-08-30 13:48:41,846 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 81 places, 81 transitions, 165 flow [2023-08-30 13:48:41,871 INFO L130 PetriNetUnfolder]: 4/81 cut-off events. [2023-08-30 13:48:41,871 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 13:48:41,872 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85 conditions, 81 events. 4/81 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 70 event pairs, 0 based on Foata normal form. 0/71 useless extension candidates. Maximal degree in co-relation 45. Up to 2 conditions per place. [2023-08-30 13:48:41,873 INFO L119 LiptonReduction]: Number of co-enabled transitions 988 [2023-08-30 13:48:43,340 INFO L134 LiptonReduction]: Checked pairs total: 1232 [2023-08-30 13:48:43,340 INFO L136 LiptonReduction]: Total number of compositions: 80 [2023-08-30 13:48:43,349 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 13:48:43,353 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;@50e3c931, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 13:48:43,353 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2023-08-30 13:48:43,354 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2023-08-30 13:48:43,354 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 13:48:43,354 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 13:48:43,355 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-30 13:48:43,355 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-08-30 13:48:43,358 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 13:48:43,358 INFO L85 PathProgramCache]: Analyzing trace with hash 10024, now seen corresponding path program 1 times [2023-08-30 13:48:43,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 13:48:43,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [803214822] [2023-08-30 13:48:43,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 13:48:43,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 13:48:43,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 13:48:43,492 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 13:48:43,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 13:48:43,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [803214822] [2023-08-30 13:48:43,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [803214822] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 13:48:43,494 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 13:48:43,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 13:48:43,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942017038] [2023-08-30 13:48:43,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 13:48:43,500 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 13:48:43,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 13:48:43,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 13:48:43,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 13:48:43,537 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 162 [2023-08-30 13:48:43,539 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 21 places, 18 transitions, 39 flow. Second operand has 3 states, 3 states have (on average 74.66666666666667) internal successors, (224), 3 states have internal predecessors, (224), 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 13:48:43,539 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 13:48:43,539 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 162 [2023-08-30 13:48:43,540 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 13:48:43,590 INFO L130 PetriNetUnfolder]: 37/90 cut-off events. [2023-08-30 13:48:43,591 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 13:48:43,591 INFO L83 FinitePrefix]: Finished finitePrefix Result has 185 conditions, 90 events. 37/90 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 284 event pairs, 36 based on Foata normal form. 0/60 useless extension candidates. Maximal degree in co-relation 168. Up to 90 conditions per place. [2023-08-30 13:48:43,592 INFO L137 encePairwiseOnDemand]: 157/162 looper letters, 16 selfloop transitions, 2 changer transitions 0/18 dead transitions. [2023-08-30 13:48:43,593 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 22 places, 18 transitions, 75 flow [2023-08-30 13:48:43,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 13:48:43,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 13:48:43,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 244 transitions. [2023-08-30 13:48:43,602 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5020576131687243 [2023-08-30 13:48:43,603 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 244 transitions. [2023-08-30 13:48:43,603 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 244 transitions. [2023-08-30 13:48:43,604 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 13:48:43,605 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 244 transitions. [2023-08-30 13:48:43,607 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 81.33333333333333) internal successors, (244), 3 states have internal predecessors, (244), 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 13:48:43,610 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 162.0) internal successors, (648), 4 states have internal predecessors, (648), 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 13:48:43,610 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 162.0) internal successors, (648), 4 states have internal predecessors, (648), 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 13:48:43,611 INFO L175 Difference]: Start difference. First operand has 21 places, 18 transitions, 39 flow. Second operand 3 states and 244 transitions. [2023-08-30 13:48:43,611 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 22 places, 18 transitions, 75 flow [2023-08-30 13:48:43,612 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 21 places, 18 transitions, 74 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 13:48:43,613 INFO L231 Difference]: Finished difference. Result has 22 places, 18 transitions, 50 flow [2023-08-30 13:48:43,614 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=36, PETRI_DIFFERENCE_MINUEND_PLACES=19, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=50, PETRI_PLACES=22, PETRI_TRANSITIONS=18} [2023-08-30 13:48:43,616 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 1 predicate places. [2023-08-30 13:48:43,616 INFO L495 AbstractCegarLoop]: Abstraction has has 22 places, 18 transitions, 50 flow [2023-08-30 13:48:43,616 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 74.66666666666667) internal successors, (224), 3 states have internal predecessors, (224), 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 13:48:43,616 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 13:48:43,617 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 13:48:43,617 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 13:48:43,617 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-08-30 13:48:43,617 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 13:48:43,617 INFO L85 PathProgramCache]: Analyzing trace with hash 311623, now seen corresponding path program 1 times [2023-08-30 13:48:43,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 13:48:43,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851342865] [2023-08-30 13:48:43,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 13:48:43,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 13:48:43,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 13:48:43,656 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 13:48:43,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 13:48:43,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851342865] [2023-08-30 13:48:43,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [851342865] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 13:48:43,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1026413258] [2023-08-30 13:48:43,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 13:48:43,657 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 13:48:43,657 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 13:48:43,659 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 13:48:43,664 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 13:48:43,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 13:48:43,703 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 13:48:43,705 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 13:48:43,730 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 13:48:43,731 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 13:48:43,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1026413258] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 13:48:43,731 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 13:48:43,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2023-08-30 13:48:43,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195409722] [2023-08-30 13:48:43,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 13:48:43,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 13:48:43,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 13:48:43,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 13:48:43,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-30 13:48:43,751 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 162 [2023-08-30 13:48:43,751 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 22 places, 18 transitions, 50 flow. Second operand has 4 states, 4 states have (on average 74.75) internal successors, (299), 4 states have internal predecessors, (299), 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 13:48:43,751 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 13:48:43,751 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 162 [2023-08-30 13:48:43,751 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 13:48:43,784 INFO L130 PetriNetUnfolder]: 37/89 cut-off events. [2023-08-30 13:48:43,784 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 13:48:43,784 INFO L83 FinitePrefix]: Finished finitePrefix Result has 189 conditions, 89 events. 37/89 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 282 event pairs, 36 based on Foata normal form. 0/60 useless extension candidates. Maximal degree in co-relation 178. Up to 88 conditions per place. [2023-08-30 13:48:43,785 INFO L137 encePairwiseOnDemand]: 159/162 looper letters, 15 selfloop transitions, 2 changer transitions 0/17 dead transitions. [2023-08-30 13:48:43,785 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 24 places, 17 transitions, 80 flow [2023-08-30 13:48:43,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 13:48:43,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 13:48:43,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 314 transitions. [2023-08-30 13:48:43,787 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4845679012345679 [2023-08-30 13:48:43,787 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 314 transitions. [2023-08-30 13:48:43,787 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 314 transitions. [2023-08-30 13:48:43,787 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 13:48:43,787 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 314 transitions. [2023-08-30 13:48:43,788 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 78.5) internal successors, (314), 4 states have internal predecessors, (314), 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 13:48:43,789 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 162.0) internal successors, (810), 5 states have internal predecessors, (810), 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 13:48:43,790 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 162.0) internal successors, (810), 5 states have internal predecessors, (810), 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 13:48:43,790 INFO L175 Difference]: Start difference. First operand has 22 places, 18 transitions, 50 flow. Second operand 4 states and 314 transitions. [2023-08-30 13:48:43,790 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 24 places, 17 transitions, 80 flow [2023-08-30 13:48:43,790 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 23 places, 17 transitions, 76 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-30 13:48:43,790 INFO L231 Difference]: Finished difference. Result has 23 places, 17 transitions, 46 flow [2023-08-30 13:48:43,790 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=42, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=46, PETRI_PLACES=23, PETRI_TRANSITIONS=17} [2023-08-30 13:48:43,791 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 2 predicate places. [2023-08-30 13:48:43,791 INFO L495 AbstractCegarLoop]: Abstraction has has 23 places, 17 transitions, 46 flow [2023-08-30 13:48:43,791 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 74.75) internal successors, (299), 4 states have internal predecessors, (299), 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 13:48:43,791 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 13:48:43,791 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-30 13:48:43,799 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-30 13:48:43,996 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 13:48:43,997 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-08-30 13:48:43,997 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 13:48:43,997 INFO L85 PathProgramCache]: Analyzing trace with hash 694699110, now seen corresponding path program 1 times [2023-08-30 13:48:43,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 13:48:43,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769416340] [2023-08-30 13:48:43,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 13:48:43,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 13:48:44,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 13:48:44,073 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 13:48:44,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 13:48:44,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769416340] [2023-08-30 13:48:44,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [769416340] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 13:48:44,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1527826270] [2023-08-30 13:48:44,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 13:48:44,075 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 13:48:44,076 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 13:48:44,077 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 13:48:44,079 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-30 13:48:44,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 13:48:44,128 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-30 13:48:44,134 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 13:48:44,141 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 13:48:44,141 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 13:48:44,153 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 13:48:44,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1527826270] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 13:48:44,153 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 13:48:44,154 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-30 13:48:44,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099556676] [2023-08-30 13:48:44,154 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 13:48:44,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 13:48:44,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 13:48:44,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 13:48:44,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-30 13:48:44,174 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 162 [2023-08-30 13:48:44,175 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 17 transitions, 46 flow. Second operand has 7 states, 7 states have (on average 74.57142857142857) internal successors, (522), 7 states have internal predecessors, (522), 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 13:48:44,175 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 13:48:44,175 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 162 [2023-08-30 13:48:44,175 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 13:48:44,225 INFO L130 PetriNetUnfolder]: 37/92 cut-off events. [2023-08-30 13:48:44,225 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 13:48:44,226 INFO L83 FinitePrefix]: Finished finitePrefix Result has 198 conditions, 92 events. 37/92 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 282 event pairs, 36 based on Foata normal form. 0/63 useless extension candidates. Maximal degree in co-relation 187. Up to 89 conditions per place. [2023-08-30 13:48:44,227 INFO L137 encePairwiseOnDemand]: 159/162 looper letters, 15 selfloop transitions, 5 changer transitions 0/20 dead transitions. [2023-08-30 13:48:44,227 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 20 transitions, 98 flow [2023-08-30 13:48:44,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 13:48:44,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 13:48:44,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 461 transitions. [2023-08-30 13:48:44,232 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4742798353909465 [2023-08-30 13:48:44,232 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 461 transitions. [2023-08-30 13:48:44,232 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 461 transitions. [2023-08-30 13:48:44,233 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 13:48:44,234 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 461 transitions. [2023-08-30 13:48:44,236 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 76.83333333333333) internal successors, (461), 6 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 13:48:44,239 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 162.0) internal successors, (1134), 7 states have internal predecessors, (1134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:48:44,239 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 162.0) internal successors, (1134), 7 states have internal predecessors, (1134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:48:44,239 INFO L175 Difference]: Start difference. First operand has 23 places, 17 transitions, 46 flow. Second operand 6 states and 461 transitions. [2023-08-30 13:48:44,240 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 20 transitions, 98 flow [2023-08-30 13:48:44,240 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 20 transitions, 95 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 13:48:44,241 INFO L231 Difference]: Finished difference. Result has 29 places, 20 transitions, 79 flow [2023-08-30 13:48:44,241 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=43, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=79, PETRI_PLACES=29, PETRI_TRANSITIONS=20} [2023-08-30 13:48:44,242 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 8 predicate places. [2023-08-30 13:48:44,242 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 20 transitions, 79 flow [2023-08-30 13:48:44,242 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 74.57142857142857) internal successors, (522), 7 states have internal predecessors, (522), 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 13:48:44,242 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 13:48:44,243 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1] [2023-08-30 13:48:44,247 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-08-30 13:48:44,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-08-30 13:48:44,447 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-08-30 13:48:44,447 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 13:48:44,448 INFO L85 PathProgramCache]: Analyzing trace with hash 964747045, now seen corresponding path program 2 times [2023-08-30 13:48:44,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 13:48:44,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568248812] [2023-08-30 13:48:44,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 13:48:44,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 13:48:44,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 13:48:44,536 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 13:48:44,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 13:48:44,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [568248812] [2023-08-30 13:48:44,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [568248812] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 13:48:44,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [535272321] [2023-08-30 13:48:44,538 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 13:48:44,538 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 13:48:44,540 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 13:48:44,541 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 13:48:44,543 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-30 13:48:44,592 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 13:48:44,592 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 13:48:44,593 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-30 13:48:44,595 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 13:48:44,614 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 6 [2023-08-30 13:48:44,663 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 13:48:44,664 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 15 [2023-08-30 13:48:44,677 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-30 13:48:44,677 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 13:48:44,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [535272321] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 13:48:44,677 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 13:48:44,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 8 [2023-08-30 13:48:44,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238864601] [2023-08-30 13:48:44,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 13:48:44,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 13:48:44,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 13:48:44,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 13:48:44,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2023-08-30 13:48:44,698 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 162 [2023-08-30 13:48:44,699 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 20 transitions, 79 flow. Second operand has 4 states, 4 states have (on average 74.5) internal successors, (298), 4 states have internal predecessors, (298), 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 13:48:44,699 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 13:48:44,699 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 162 [2023-08-30 13:48:44,699 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 13:48:44,729 INFO L130 PetriNetUnfolder]: 21/60 cut-off events. [2023-08-30 13:48:44,729 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 13:48:44,730 INFO L83 FinitePrefix]: Finished finitePrefix Result has 148 conditions, 60 events. 21/60 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 141 event pairs, 10 based on Foata normal form. 0/52 useless extension candidates. Maximal degree in co-relation 133. Up to 41 conditions per place. [2023-08-30 13:48:44,730 INFO L137 encePairwiseOnDemand]: 155/162 looper letters, 19 selfloop transitions, 3 changer transitions 4/26 dead transitions. [2023-08-30 13:48:44,730 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 26 transitions, 143 flow [2023-08-30 13:48:44,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 13:48:44,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 13:48:44,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 245 transitions. [2023-08-30 13:48:44,731 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5041152263374485 [2023-08-30 13:48:44,731 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 245 transitions. [2023-08-30 13:48:44,732 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 245 transitions. [2023-08-30 13:48:44,732 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 13:48:44,732 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 245 transitions. [2023-08-30 13:48:44,732 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 81.66666666666667) internal successors, (245), 3 states have internal predecessors, (245), 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 13:48:44,733 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 162.0) internal successors, (648), 4 states have internal predecessors, (648), 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 13:48:44,734 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 162.0) internal successors, (648), 4 states have internal predecessors, (648), 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 13:48:44,734 INFO L175 Difference]: Start difference. First operand has 29 places, 20 transitions, 79 flow. Second operand 3 states and 245 transitions. [2023-08-30 13:48:44,734 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 26 transitions, 143 flow [2023-08-30 13:48:44,735 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 26 transitions, 129 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-08-30 13:48:44,736 INFO L231 Difference]: Finished difference. Result has 31 places, 20 transitions, 82 flow [2023-08-30 13:48:44,736 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=65, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=82, PETRI_PLACES=31, PETRI_TRANSITIONS=20} [2023-08-30 13:48:44,737 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 10 predicate places. [2023-08-30 13:48:44,737 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 20 transitions, 82 flow [2023-08-30 13:48:44,738 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 74.5) internal successors, (298), 4 states have internal predecessors, (298), 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 13:48:44,738 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 13:48:44,738 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 13:48:44,747 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-30 13:48:44,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 13:48:44,948 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-08-30 13:48:44,948 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 13:48:44,948 INFO L85 PathProgramCache]: Analyzing trace with hash -1141561628, now seen corresponding path program 1 times [2023-08-30 13:48:44,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 13:48:44,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23491182] [2023-08-30 13:48:44,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 13:48:44,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 13:48:44,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 13:48:45,043 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 13:48:45,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 13:48:45,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [23491182] [2023-08-30 13:48:45,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [23491182] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 13:48:45,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1870979716] [2023-08-30 13:48:45,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 13:48:45,045 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 13:48:45,045 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 13:48:45,046 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 13:48:45,047 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-30 13:48:45,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 13:48:45,117 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 13:48:45,120 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 13:48:45,134 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 13:48:45,134 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 13:48:45,170 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 13:48:45,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1870979716] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 13:48:45,171 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 13:48:45,171 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-08-30 13:48:45,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853253042] [2023-08-30 13:48:45,171 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 13:48:45,172 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-30 13:48:45,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 13:48:45,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-30 13:48:45,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-08-30 13:48:45,202 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 162 [2023-08-30 13:48:45,203 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 20 transitions, 82 flow. Second operand has 13 states, 13 states have (on average 74.53846153846153) internal successors, (969), 13 states have internal predecessors, (969), 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 13:48:45,203 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 13:48:45,203 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 162 [2023-08-30 13:48:45,203 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 13:48:45,261 INFO L130 PetriNetUnfolder]: 17/58 cut-off events. [2023-08-30 13:48:45,261 INFO L131 PetriNetUnfolder]: For 28/28 co-relation queries the response was YES. [2023-08-30 13:48:45,262 INFO L83 FinitePrefix]: Finished finitePrefix Result has 172 conditions, 58 events. 17/58 cut-off events. For 28/28 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 117 event pairs, 16 based on Foata normal form. 6/60 useless extension candidates. Maximal degree in co-relation 155. Up to 49 conditions per place. [2023-08-30 13:48:45,262 INFO L137 encePairwiseOnDemand]: 159/162 looper letters, 15 selfloop transitions, 11 changer transitions 0/26 dead transitions. [2023-08-30 13:48:45,262 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 26 transitions, 170 flow [2023-08-30 13:48:45,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-30 13:48:45,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-30 13:48:45,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 908 transitions. [2023-08-30 13:48:45,265 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4670781893004115 [2023-08-30 13:48:45,265 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 908 transitions. [2023-08-30 13:48:45,265 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 908 transitions. [2023-08-30 13:48:45,265 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 13:48:45,266 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 908 transitions. [2023-08-30 13:48:45,267 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 75.66666666666667) internal successors, (908), 12 states have internal predecessors, (908), 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 13:48:45,269 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 162.0) internal successors, (2106), 13 states have internal predecessors, (2106), 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 13:48:45,269 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 162.0) internal successors, (2106), 13 states have internal predecessors, (2106), 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 13:48:45,269 INFO L175 Difference]: Start difference. First operand has 31 places, 20 transitions, 82 flow. Second operand 12 states and 908 transitions. [2023-08-30 13:48:45,270 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 26 transitions, 170 flow [2023-08-30 13:48:45,270 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 26 transitions, 167 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 13:48:45,271 INFO L231 Difference]: Finished difference. Result has 47 places, 26 transitions, 163 flow [2023-08-30 13:48:45,271 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=79, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=163, PETRI_PLACES=47, PETRI_TRANSITIONS=26} [2023-08-30 13:48:45,272 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 26 predicate places. [2023-08-30 13:48:45,272 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 26 transitions, 163 flow [2023-08-30 13:48:45,272 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 74.53846153846153) internal successors, (969), 13 states have internal predecessors, (969), 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 13:48:45,272 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 13:48:45,272 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 13:48:45,283 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-30 13:48:45,477 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 13:48:45,477 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-08-30 13:48:45,477 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 13:48:45,477 INFO L85 PathProgramCache]: Analyzing trace with hash 1295549060, now seen corresponding path program 2 times [2023-08-30 13:48:45,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 13:48:45,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195163119] [2023-08-30 13:48:45,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 13:48:45,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 13:48:45,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 13:48:45,752 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-30 13:48:45,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 13:48:45,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195163119] [2023-08-30 13:48:45,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [195163119] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 13:48:45,752 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 13:48:45,752 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 13:48:45,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435938401] [2023-08-30 13:48:45,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 13:48:45,753 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 13:48:45,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 13:48:45,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 13:48:45,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-08-30 13:48:45,825 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 162 [2023-08-30 13:48:45,825 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 26 transitions, 163 flow. Second operand has 7 states, 7 states have (on average 67.28571428571429) internal successors, (471), 7 states have internal predecessors, (471), 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 13:48:45,825 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 13:48:45,826 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 162 [2023-08-30 13:48:45,826 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 13:48:45,883 INFO L130 PetriNetUnfolder]: 16/55 cut-off events. [2023-08-30 13:48:45,883 INFO L131 PetriNetUnfolder]: For 34/34 co-relation queries the response was YES. [2023-08-30 13:48:45,883 INFO L83 FinitePrefix]: Finished finitePrefix Result has 188 conditions, 55 events. 16/55 cut-off events. For 34/34 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 106 event pairs, 4 based on Foata normal form. 0/53 useless extension candidates. Maximal degree in co-relation 163. Up to 21 conditions per place. [2023-08-30 13:48:45,884 INFO L137 encePairwiseOnDemand]: 156/162 looper letters, 25 selfloop transitions, 5 changer transitions 5/35 dead transitions. [2023-08-30 13:48:45,884 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 35 transitions, 253 flow [2023-08-30 13:48:45,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 13:48:45,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 13:48:45,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 423 transitions. [2023-08-30 13:48:45,885 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4351851851851852 [2023-08-30 13:48:45,885 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 423 transitions. [2023-08-30 13:48:45,885 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 423 transitions. [2023-08-30 13:48:45,886 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 13:48:45,886 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 423 transitions. [2023-08-30 13:48:45,887 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 70.5) internal successors, (423), 6 states have internal predecessors, (423), 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 13:48:45,888 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 162.0) internal successors, (1134), 7 states have internal predecessors, (1134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:48:45,888 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 162.0) internal successors, (1134), 7 states have internal predecessors, (1134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:48:45,888 INFO L175 Difference]: Start difference. First operand has 47 places, 26 transitions, 163 flow. Second operand 6 states and 423 transitions. [2023-08-30 13:48:45,888 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 35 transitions, 253 flow [2023-08-30 13:48:45,890 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 35 transitions, 205 flow, removed 19 selfloop flow, removed 5 redundant places. [2023-08-30 13:48:45,890 INFO L231 Difference]: Finished difference. Result has 46 places, 25 transitions, 121 flow [2023-08-30 13:48:45,891 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=111, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=121, PETRI_PLACES=46, PETRI_TRANSITIONS=25} [2023-08-30 13:48:45,891 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 25 predicate places. [2023-08-30 13:48:45,891 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 25 transitions, 121 flow [2023-08-30 13:48:45,891 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 67.28571428571429) internal successors, (471), 7 states have internal predecessors, (471), 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 13:48:45,892 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 13:48:45,892 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 13:48:45,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-30 13:48:45,892 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-08-30 13:48:45,892 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 13:48:45,892 INFO L85 PathProgramCache]: Analyzing trace with hash 1295549059, now seen corresponding path program 1 times [2023-08-30 13:48:45,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 13:48:45,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542586249] [2023-08-30 13:48:45,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 13:48:45,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 13:48:45,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 13:48:46,085 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-30 13:48:46,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 13:48:46,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1542586249] [2023-08-30 13:48:46,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1542586249] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 13:48:46,089 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 13:48:46,089 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 13:48:46,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144319451] [2023-08-30 13:48:46,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 13:48:46,089 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 13:48:46,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 13:48:46,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 13:48:46,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-08-30 13:48:46,146 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 162 [2023-08-30 13:48:46,147 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 25 transitions, 121 flow. Second operand has 7 states, 7 states have (on average 67.28571428571429) internal successors, (471), 7 states have internal predecessors, (471), 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 13:48:46,147 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 13:48:46,147 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 162 [2023-08-30 13:48:46,147 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 13:48:46,212 INFO L130 PetriNetUnfolder]: 13/48 cut-off events. [2023-08-30 13:48:46,212 INFO L131 PetriNetUnfolder]: For 52/52 co-relation queries the response was YES. [2023-08-30 13:48:46,213 INFO L83 FinitePrefix]: Finished finitePrefix Result has 159 conditions, 48 events. 13/48 cut-off events. For 52/52 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 82 event pairs, 4 based on Foata normal form. 2/48 useless extension candidates. Maximal degree in co-relation 135. Up to 21 conditions per place. [2023-08-30 13:48:46,213 INFO L137 encePairwiseOnDemand]: 156/162 looper letters, 20 selfloop transitions, 2 changer transitions 9/31 dead transitions. [2023-08-30 13:48:46,213 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 31 transitions, 193 flow [2023-08-30 13:48:46,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 13:48:46,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 13:48:46,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 419 transitions. [2023-08-30 13:48:46,215 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43106995884773663 [2023-08-30 13:48:46,215 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 419 transitions. [2023-08-30 13:48:46,215 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 419 transitions. [2023-08-30 13:48:46,215 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 13:48:46,215 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 419 transitions. [2023-08-30 13:48:46,216 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 69.83333333333333) internal successors, (419), 6 states have internal predecessors, (419), 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 13:48:46,217 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 162.0) internal successors, (1134), 7 states have internal predecessors, (1134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:48:46,218 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 162.0) internal successors, (1134), 7 states have internal predecessors, (1134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:48:46,218 INFO L175 Difference]: Start difference. First operand has 46 places, 25 transitions, 121 flow. Second operand 6 states and 419 transitions. [2023-08-30 13:48:46,218 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 31 transitions, 193 flow [2023-08-30 13:48:46,219 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 31 transitions, 184 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-30 13:48:46,219 INFO L231 Difference]: Finished difference. Result has 46 places, 21 transitions, 103 flow [2023-08-30 13:48:46,220 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=103, PETRI_PLACES=46, PETRI_TRANSITIONS=21} [2023-08-30 13:48:46,220 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 25 predicate places. [2023-08-30 13:48:46,220 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 21 transitions, 103 flow [2023-08-30 13:48:46,220 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 67.28571428571429) internal successors, (471), 7 states have internal predecessors, (471), 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 13:48:46,220 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 13:48:46,221 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 13:48:46,221 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-30 13:48:46,221 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-08-30 13:48:46,221 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 13:48:46,221 INFO L85 PathProgramCache]: Analyzing trace with hash 1295555326, now seen corresponding path program 1 times [2023-08-30 13:48:46,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 13:48:46,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376689675] [2023-08-30 13:48:46,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 13:48:46,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 13:48:46,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 13:48:46,420 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-30 13:48:46,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 13:48:46,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376689675] [2023-08-30 13:48:46,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [376689675] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 13:48:46,421 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 13:48:46,421 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 13:48:46,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478020624] [2023-08-30 13:48:46,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 13:48:46,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 13:48:46,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 13:48:46,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 13:48:46,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-08-30 13:48:46,504 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 162 [2023-08-30 13:48:46,505 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 21 transitions, 103 flow. Second operand has 7 states, 7 states have (on average 67.28571428571429) internal successors, (471), 7 states have internal predecessors, (471), 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 13:48:46,505 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 13:48:46,505 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 162 [2023-08-30 13:48:46,505 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 13:48:46,539 INFO L130 PetriNetUnfolder]: 8/36 cut-off events. [2023-08-30 13:48:46,539 INFO L131 PetriNetUnfolder]: For 49/49 co-relation queries the response was YES. [2023-08-30 13:48:46,539 INFO L83 FinitePrefix]: Finished finitePrefix Result has 125 conditions, 36 events. 8/36 cut-off events. For 49/49 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 33 event pairs, 2 based on Foata normal form. 0/34 useless extension candidates. Maximal degree in co-relation 101. Up to 18 conditions per place. [2023-08-30 13:48:46,540 INFO L137 encePairwiseOnDemand]: 156/162 looper letters, 20 selfloop transitions, 5 changer transitions 0/25 dead transitions. [2023-08-30 13:48:46,540 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 25 transitions, 163 flow [2023-08-30 13:48:46,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 13:48:46,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 13:48:46,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 346 transitions. [2023-08-30 13:48:46,541 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4271604938271605 [2023-08-30 13:48:46,541 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 346 transitions. [2023-08-30 13:48:46,541 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 346 transitions. [2023-08-30 13:48:46,541 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 13:48:46,541 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 346 transitions. [2023-08-30 13:48:46,542 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 69.2) internal successors, (346), 5 states have internal predecessors, (346), 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 13:48:46,543 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 162.0) internal successors, (972), 6 states have internal predecessors, (972), 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 13:48:46,543 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 162.0) internal successors, (972), 6 states have internal predecessors, (972), 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 13:48:46,543 INFO L175 Difference]: Start difference. First operand has 46 places, 21 transitions, 103 flow. Second operand 5 states and 346 transitions. [2023-08-30 13:48:46,544 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 25 transitions, 163 flow [2023-08-30 13:48:46,544 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 25 transitions, 157 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-30 13:48:46,545 INFO L231 Difference]: Finished difference. Result has 42 places, 23 transitions, 125 flow [2023-08-30 13:48:46,545 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=97, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=125, PETRI_PLACES=42, PETRI_TRANSITIONS=23} [2023-08-30 13:48:46,545 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 21 predicate places. [2023-08-30 13:48:46,545 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 23 transitions, 125 flow [2023-08-30 13:48:46,546 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 67.28571428571429) internal successors, (471), 7 states have internal predecessors, (471), 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 13:48:46,546 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 13:48:46,546 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 13:48:46,546 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-30 13:48:46,546 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-08-30 13:48:46,546 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 13:48:46,547 INFO L85 PathProgramCache]: Analyzing trace with hash 1264260859, now seen corresponding path program 1 times [2023-08-30 13:48:46,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 13:48:46,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866504249] [2023-08-30 13:48:46,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 13:48:46,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 13:48:46,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 13:48:46,720 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-30 13:48:46,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 13:48:46,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866504249] [2023-08-30 13:48:46,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [866504249] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 13:48:46,721 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 13:48:46,721 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 13:48:46,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729288325] [2023-08-30 13:48:46,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 13:48:46,722 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 13:48:46,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 13:48:46,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 13:48:46,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2023-08-30 13:48:46,778 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 162 [2023-08-30 13:48:46,779 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 23 transitions, 125 flow. Second operand has 7 states, 7 states have (on average 68.28571428571429) internal successors, (478), 7 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 13:48:46,779 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 13:48:46,779 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 162 [2023-08-30 13:48:46,779 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 13:48:46,808 INFO L130 PetriNetUnfolder]: 5/31 cut-off events. [2023-08-30 13:48:46,808 INFO L131 PetriNetUnfolder]: For 57/57 co-relation queries the response was YES. [2023-08-30 13:48:46,808 INFO L83 FinitePrefix]: Finished finitePrefix Result has 123 conditions, 31 events. 5/31 cut-off events. For 57/57 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 22 event pairs, 3 based on Foata normal form. 4/35 useless extension candidates. Maximal degree in co-relation 98. Up to 18 conditions per place. [2023-08-30 13:48:46,809 INFO L137 encePairwiseOnDemand]: 158/162 looper letters, 17 selfloop transitions, 3 changer transitions 2/22 dead transitions. [2023-08-30 13:48:46,809 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 22 transitions, 159 flow [2023-08-30 13:48:46,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 13:48:46,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 13:48:46,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 348 transitions. [2023-08-30 13:48:46,810 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42962962962962964 [2023-08-30 13:48:46,810 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 348 transitions. [2023-08-30 13:48:46,810 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 348 transitions. [2023-08-30 13:48:46,811 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 13:48:46,811 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 348 transitions. [2023-08-30 13:48:46,813 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 69.6) internal successors, (348), 5 states have internal predecessors, (348), 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 13:48:46,814 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 162.0) internal successors, (972), 6 states have internal predecessors, (972), 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 13:48:46,814 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 162.0) internal successors, (972), 6 states have internal predecessors, (972), 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 13:48:46,814 INFO L175 Difference]: Start difference. First operand has 42 places, 23 transitions, 125 flow. Second operand 5 states and 348 transitions. [2023-08-30 13:48:46,814 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 22 transitions, 159 flow [2023-08-30 13:48:46,816 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 22 transitions, 151 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-30 13:48:46,816 INFO L231 Difference]: Finished difference. Result has 41 places, 20 transitions, 105 flow [2023-08-30 13:48:46,816 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=103, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=105, PETRI_PLACES=41, PETRI_TRANSITIONS=20} [2023-08-30 13:48:46,817 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 20 predicate places. [2023-08-30 13:48:46,818 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 20 transitions, 105 flow [2023-08-30 13:48:46,818 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 68.28571428571429) internal successors, (478), 7 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 13:48:46,818 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 13:48:46,819 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 13:48:46,819 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-30 13:48:46,819 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-08-30 13:48:46,819 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 13:48:46,819 INFO L85 PathProgramCache]: Analyzing trace with hash 1264260826, now seen corresponding path program 2 times [2023-08-30 13:48:46,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 13:48:46,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451239169] [2023-08-30 13:48:46,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 13:48:46,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 13:48:46,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 13:48:47,002 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-30 13:48:47,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 13:48:47,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1451239169] [2023-08-30 13:48:47,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1451239169] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 13:48:47,002 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 13:48:47,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 13:48:47,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201867339] [2023-08-30 13:48:47,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 13:48:47,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 13:48:47,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 13:48:47,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 13:48:47,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2023-08-30 13:48:47,056 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 162 [2023-08-30 13:48:47,057 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 20 transitions, 105 flow. Second operand has 7 states, 7 states have (on average 68.28571428571429) internal successors, (478), 7 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 13:48:47,057 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 13:48:47,057 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 162 [2023-08-30 13:48:47,057 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 13:48:47,081 INFO L130 PetriNetUnfolder]: 2/21 cut-off events. [2023-08-30 13:48:47,081 INFO L131 PetriNetUnfolder]: For 50/50 co-relation queries the response was YES. [2023-08-30 13:48:47,081 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91 conditions, 21 events. 2/21 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 4 event pairs, 1 based on Foata normal form. 2/23 useless extension candidates. Maximal degree in co-relation 67. Up to 15 conditions per place. [2023-08-30 13:48:47,081 INFO L137 encePairwiseOnDemand]: 158/162 looper letters, 0 selfloop transitions, 0 changer transitions 19/19 dead transitions. [2023-08-30 13:48:47,081 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 19 transitions, 137 flow [2023-08-30 13:48:47,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 13:48:47,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 13:48:47,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 345 transitions. [2023-08-30 13:48:47,083 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42592592592592593 [2023-08-30 13:48:47,083 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 345 transitions. [2023-08-30 13:48:47,083 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 345 transitions. [2023-08-30 13:48:47,083 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 13:48:47,083 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 345 transitions. [2023-08-30 13:48:47,084 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 69.0) internal successors, (345), 5 states have internal predecessors, (345), 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 13:48:47,085 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 162.0) internal successors, (972), 6 states have internal predecessors, (972), 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 13:48:47,085 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 162.0) internal successors, (972), 6 states have internal predecessors, (972), 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 13:48:47,085 INFO L175 Difference]: Start difference. First operand has 41 places, 20 transitions, 105 flow. Second operand 5 states and 345 transitions. [2023-08-30 13:48:47,085 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 19 transitions, 137 flow [2023-08-30 13:48:47,086 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 19 transitions, 126 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-08-30 13:48:47,086 INFO L231 Difference]: Finished difference. Result has 38 places, 0 transitions, 0 flow [2023-08-30 13:48:47,086 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=38, PETRI_TRANSITIONS=0} [2023-08-30 13:48:47,087 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 17 predicate places. [2023-08-30 13:48:47,087 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 0 transitions, 0 flow [2023-08-30 13:48:47,087 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 68.28571428571429) internal successors, (478), 7 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 13:48:47,089 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 9 remaining) [2023-08-30 13:48:47,089 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 9 remaining) [2023-08-30 13:48:47,089 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 9 remaining) [2023-08-30 13:48:47,089 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 9 remaining) [2023-08-30 13:48:47,089 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 9 remaining) [2023-08-30 13:48:47,089 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 9 remaining) [2023-08-30 13:48:47,090 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 9 remaining) [2023-08-30 13:48:47,090 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 9 remaining) [2023-08-30 13:48:47,090 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 9 remaining) [2023-08-30 13:48:47,090 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-30 13:48:47,090 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 2, 1, 1, 1, 1] [2023-08-30 13:48:47,093 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-30 13:48:47,093 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-30 13:48:47,095 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.08 01:48:47 BasicIcfg [2023-08-30 13:48:47,095 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-30 13:48:47,095 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-08-30 13:48:47,095 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-08-30 13:48:47,095 INFO L275 PluginConnector]: Witness Printer initialized [2023-08-30 13:48:47,096 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 01:48:41" (3/4) ... [2023-08-30 13:48:47,097 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-08-30 13:48:47,101 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t_fun [2023-08-30 13:48:47,102 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2023-08-30 13:48:47,103 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-08-30 13:48:47,103 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-08-30 13:48:47,128 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-08-30 13:48:47,128 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-08-30 13:48:47,128 INFO L158 Benchmark]: Toolchain (without parser) took 6294.28ms. Allocated memory was 77.6MB in the beginning and 136.3MB in the end (delta: 58.7MB). Free memory was 53.9MB in the beginning and 40.8MB in the end (delta: 13.1MB). Peak memory consumption was 76.1MB. Max. memory is 16.1GB. [2023-08-30 13:48:47,129 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 62.9MB. Free memory is still 40.6MB. There was no memory consumed. Max. memory is 16.1GB. [2023-08-30 13:48:47,129 INFO L158 Benchmark]: CACSL2BoogieTranslator took 470.95ms. Allocated memory is still 77.6MB. Free memory was 53.7MB in the beginning and 44.3MB in the end (delta: 9.4MB). Peak memory consumption was 21.6MB. Max. memory is 16.1GB. [2023-08-30 13:48:47,129 INFO L158 Benchmark]: Boogie Procedure Inliner took 34.86ms. Allocated memory is still 77.6MB. Free memory was 44.3MB in the beginning and 41.9MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 13:48:47,129 INFO L158 Benchmark]: Boogie Preprocessor took 38.59ms. Allocated memory is still 77.6MB. Free memory was 41.9MB in the beginning and 40.1MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. [2023-08-30 13:48:47,130 INFO L158 Benchmark]: RCFGBuilder took 301.61ms. Allocated memory is still 77.6MB. Free memory was 40.1MB in the beginning and 51.7MB in the end (delta: -11.5MB). Peak memory consumption was 17.1MB. Max. memory is 16.1GB. [2023-08-30 13:48:47,130 INFO L158 Benchmark]: TraceAbstraction took 5409.21ms. Allocated memory was 77.6MB in the beginning and 136.3MB in the end (delta: 58.7MB). Free memory was 50.9MB in the beginning and 42.9MB in the end (delta: 8.0MB). Peak memory consumption was 66.8MB. Max. memory is 16.1GB. [2023-08-30 13:48:47,130 INFO L158 Benchmark]: Witness Printer took 32.83ms. Allocated memory is still 136.3MB. Free memory was 42.9MB in the beginning and 40.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 13:48:47,131 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 62.9MB. Free memory is still 40.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 470.95ms. Allocated memory is still 77.6MB. Free memory was 53.7MB in the beginning and 44.3MB in the end (delta: 9.4MB). Peak memory consumption was 21.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 34.86ms. Allocated memory is still 77.6MB. Free memory was 44.3MB in the beginning and 41.9MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 38.59ms. Allocated memory is still 77.6MB. Free memory was 41.9MB in the beginning and 40.1MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 301.61ms. Allocated memory is still 77.6MB. Free memory was 40.1MB in the beginning and 51.7MB in the end (delta: -11.5MB). Peak memory consumption was 17.1MB. Max. memory is 16.1GB. * TraceAbstraction took 5409.21ms. Allocated memory was 77.6MB in the beginning and 136.3MB in the end (delta: 58.7MB). Free memory was 50.9MB in the beginning and 42.9MB in the end (delta: 8.0MB). Peak memory consumption was 66.8MB. Max. memory is 16.1GB. * Witness Printer took 32.83ms. Allocated memory is still 136.3MB. Free memory was 42.9MB in the beginning and 40.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.5s, 81 PlacesBefore, 21 PlacesAfterwards, 81 TransitionsBefore, 18 TransitionsAfterwards, 988 CoEnabledTransitionPairs, 5 FixpointIterations, 30 TrivialSequentialCompositions, 39 ConcurrentSequentialCompositions, 6 TrivialYvCompositions, 2 ConcurrentYvCompositions, 3 ChoiceCompositions, 80 TotalNumberOfCompositions, 1232 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 917, independent: 847, independent conditional: 0, independent unconditional: 847, dependent: 70, dependent conditional: 0, dependent unconditional: 70, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 550, independent: 528, independent conditional: 0, independent unconditional: 528, dependent: 22, dependent conditional: 0, dependent unconditional: 22, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 917, independent: 319, independent conditional: 0, independent unconditional: 319, dependent: 48, dependent conditional: 0, dependent unconditional: 48, unknown: 550, unknown conditional: 0, unknown unconditional: 550] , Statistics on independence cache: Total cache size (in pairs): 27, Positive cache size: 17, Positive conditional cache size: 0, Positive unconditional cache size: 17, Negative cache size: 10, Negative conditional cache size: 0, Negative unconditional cache size: 10, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 936]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 936]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 943]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 943]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 931]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 931]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 106 locations, 9 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 5.3s, OverallIterations: 10, TraceHistogramMax: 10, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.6s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 725 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 496 mSDsluCounter, 276 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 191 mSDsCounter, 53 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1125 IncrementalHoareTripleChecker+Invalid, 1178 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 53 mSolverCounterUnsat, 85 mSDtfsCounter, 1125 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 92 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=163occurred in iteration=5, InterpolantAutomatonStates: 55, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.4s InterpolantComputationTime, 152 NumberOfCodeBlocks, 148 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 154 ConstructedInterpolants, 0 QuantifiedInterpolants, 1372 SizeOfPredicates, 2 NumberOfNonLiveVariables, 331 ConjunctsInSsa, 22 ConjunctsInUnsatCore, 16 InterpolantComputations, 8 PerfectInterpolantSequences, 286/330 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 6 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-30 13:48:47,145 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE