./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/pthread-ext/28_buggy_simple_loop1_vf.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/pthread-ext/28_buggy_simple_loop1_vf.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 f7757e6e73d857d492b029f13f86cb5d550622238e5a2b483c58ab6fc3ffdeb1 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-30 12:52:39,434 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 12:52:39,436 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 12:52:39,477 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 12:52:39,478 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 12:52:39,481 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 12:52:39,489 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 12:52:39,491 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 12:52:39,493 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 12:52:39,497 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 12:52:39,498 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 12:52:39,498 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 12:52:39,498 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 12:52:39,500 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 12:52:39,501 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 12:52:39,508 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 12:52:39,508 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 12:52:39,510 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 12:52:39,511 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 12:52:39,517 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 12:52:39,518 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 12:52:39,520 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 12:52:39,521 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 12:52:39,522 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 12:52:39,528 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 12:52:39,528 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 12:52:39,528 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 12:52:39,530 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 12:52:39,531 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 12:52:39,531 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 12:52:39,532 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 12:52:39,533 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 12:52:39,534 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 12:52:39,535 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 12:52:39,536 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 12:52:39,536 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 12:52:39,536 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 12:52:39,537 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 12:52:39,537 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 12:52:39,537 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 12:52:39,538 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 12:52:39,539 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-08-30 12:52:39,575 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 12:52:39,575 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 12:52:39,577 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 12:52:39,577 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 12:52:39,578 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 12:52:39,578 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 12:52:39,578 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 12:52:39,579 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 12:52:39,579 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 12:52:39,579 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 12:52:39,580 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 12:52:39,580 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 12:52:39,580 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 12:52:39,580 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 12:52:39,580 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 12:52:39,581 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 12:52:39,581 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 12:52:39,581 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 12:52:39,581 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-08-30 12:52:39,581 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 12:52:39,581 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 12:52:39,582 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 12:52:39,582 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 12:52:39,582 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 12:52:39,582 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 12:52:39,582 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 12:52:39,583 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 12:52:39,583 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 12:52:39,583 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 12:52:39,583 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 12:52:39,583 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 12:52:39,583 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 12:52:39,584 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 12:52:39,584 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 12:52:39,584 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 12:52:39,584 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 12:52:39,585 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 12:52:39,585 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f7757e6e73d857d492b029f13f86cb5d550622238e5a2b483c58ab6fc3ffdeb1 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-30 12:52:39,895 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 12:52:39,911 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 12:52:39,914 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 12:52:39,915 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 12:52:39,915 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 12:52:39,916 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-ext/28_buggy_simple_loop1_vf.i [2023-08-30 12:52:41,170 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 12:52:41,397 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 12:52:41,400 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/28_buggy_simple_loop1_vf.i [2023-08-30 12:52:41,417 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5137673df/f39b20c55c9e4cfbaf5b30f343c0ae93/FLAGc8c665c8b [2023-08-30 12:52:41,436 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5137673df/f39b20c55c9e4cfbaf5b30f343c0ae93 [2023-08-30 12:52:41,439 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 12:52:41,440 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 12:52:41,442 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 12:52:41,442 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 12:52:41,445 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 12:52:41,446 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 12:52:41" (1/1) ... [2023-08-30 12:52:41,447 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@8270678 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:52:41, skipping insertion in model container [2023-08-30 12:52:41,447 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 12:52:41" (1/1) ... [2023-08-30 12:52:41,453 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 12:52:41,499 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 12:52:41,827 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/28_buggy_simple_loop1_vf.i[30287,30300] [2023-08-30 12:52:41,832 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 12:52:41,839 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 12:52:41,866 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/28_buggy_simple_loop1_vf.i[30287,30300] [2023-08-30 12:52:41,869 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 12:52:41,897 INFO L208 MainTranslator]: Completed translation [2023-08-30 12:52:41,898 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:52:41 WrapperNode [2023-08-30 12:52:41,898 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 12:52:41,899 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 12:52:41,899 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 12:52:41,899 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 12:52:41,905 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:52:41" (1/1) ... [2023-08-30 12:52:41,915 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:52:41" (1/1) ... [2023-08-30 12:52:41,930 INFO L138 Inliner]: procedures = 167, calls = 10, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 22 [2023-08-30 12:52:41,930 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 12:52:41,931 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 12:52:41,931 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 12:52:41,931 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 12:52:41,938 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:52:41" (1/1) ... [2023-08-30 12:52:41,938 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:52:41" (1/1) ... [2023-08-30 12:52:41,940 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:52:41" (1/1) ... [2023-08-30 12:52:41,941 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:52:41" (1/1) ... [2023-08-30 12:52:41,945 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:52:41" (1/1) ... [2023-08-30 12:52:41,948 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:52:41" (1/1) ... [2023-08-30 12:52:41,949 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:52:41" (1/1) ... [2023-08-30 12:52:41,950 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:52:41" (1/1) ... [2023-08-30 12:52:41,952 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 12:52:41,953 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 12:52:41,953 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 12:52:41,953 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 12:52:41,954 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:52:41" (1/1) ... [2023-08-30 12:52:41,961 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 12:52:41,975 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 12:52:41,990 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-30 12:52:41,999 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-30 12:52:42,028 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2023-08-30 12:52:42,029 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2023-08-30 12:52:42,033 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 12:52:42,033 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 12:52:42,033 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 12:52:42,033 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 12:52:42,033 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 12:52:42,034 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 12:52:42,034 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 12:52:42,035 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-30 12:52:42,178 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 12:52:42,180 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 12:52:42,381 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 12:52:42,386 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 12:52:42,387 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-08-30 12:52:42,388 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 12:52:42 BoogieIcfgContainer [2023-08-30 12:52:42,389 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 12:52:42,392 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 12:52:42,392 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 12:52:42,395 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 12:52:42,395 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 12:52:41" (1/3) ... [2023-08-30 12:52:42,396 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13198433 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 12:52:42, skipping insertion in model container [2023-08-30 12:52:42,396 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:52:41" (2/3) ... [2023-08-30 12:52:42,396 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13198433 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 12:52:42, skipping insertion in model container [2023-08-30 12:52:42,396 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 12:52:42" (3/3) ... [2023-08-30 12:52:42,397 INFO L112 eAbstractionObserver]: Analyzing ICFG 28_buggy_simple_loop1_vf.i [2023-08-30 12:52:42,404 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 12:52:42,412 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 12:52:42,413 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2023-08-30 12:52:42,413 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 12:52:42,518 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-30 12:52:42,555 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 76 places, 82 transitions, 169 flow [2023-08-30 12:52:42,608 INFO L130 PetriNetUnfolder]: 10/92 cut-off events. [2023-08-30 12:52:42,609 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 12:52:42,613 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97 conditions, 92 events. 10/92 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 124 event pairs, 0 based on Foata normal form. 0/72 useless extension candidates. Maximal degree in co-relation 70. Up to 4 conditions per place. [2023-08-30 12:52:42,614 INFO L82 GeneralOperation]: Start removeDead. Operand has 76 places, 82 transitions, 169 flow [2023-08-30 12:52:42,618 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 76 places, 82 transitions, 169 flow [2023-08-30 12:52:42,622 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 12:52:42,634 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 76 places, 82 transitions, 169 flow [2023-08-30 12:52:42,638 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 76 places, 82 transitions, 169 flow [2023-08-30 12:52:42,638 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 76 places, 82 transitions, 169 flow [2023-08-30 12:52:42,669 INFO L130 PetriNetUnfolder]: 10/92 cut-off events. [2023-08-30 12:52:42,669 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 12:52:42,670 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97 conditions, 92 events. 10/92 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 124 event pairs, 0 based on Foata normal form. 0/72 useless extension candidates. Maximal degree in co-relation 70. Up to 4 conditions per place. [2023-08-30 12:52:42,672 INFO L119 LiptonReduction]: Number of co-enabled transitions 1508 [2023-08-30 12:52:44,551 INFO L134 LiptonReduction]: Checked pairs total: 1326 [2023-08-30 12:52:44,552 INFO L136 LiptonReduction]: Total number of compositions: 80 [2023-08-30 12:52:44,564 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 12:52:44,569 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;@1f91c955, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 12:52:44,569 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2023-08-30 12:52:44,572 INFO L130 PetriNetUnfolder]: 0/8 cut-off events. [2023-08-30 12:52:44,572 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 12:52:44,572 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:52:44,573 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 12:52:44,573 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-08-30 12:52:44,577 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:52:44,577 INFO L85 PathProgramCache]: Analyzing trace with hash 356566008, now seen corresponding path program 1 times [2023-08-30 12:52:44,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:52:44,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325346161] [2023-08-30 12:52:44,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:52:44,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:52:44,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:52:44,766 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 12:52:44,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:52:44,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325346161] [2023-08-30 12:52:44,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [325346161] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:52:44,768 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:52:44,768 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 12:52:44,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776052268] [2023-08-30 12:52:44,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:52:44,776 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 12:52:44,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:52:44,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 12:52:44,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 12:52:44,831 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 162 [2023-08-30 12:52:44,834 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 21 places, 22 transitions, 49 flow. Second operand has 3 states, 3 states have (on average 70.66666666666667) internal successors, (212), 3 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:52:44,834 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:52:44,834 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 162 [2023-08-30 12:52:44,835 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:52:44,899 INFO L130 PetriNetUnfolder]: 53/117 cut-off events. [2023-08-30 12:52:44,899 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 12:52:44,900 INFO L83 FinitePrefix]: Finished finitePrefix Result has 239 conditions, 117 events. 53/117 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 388 event pairs, 24 based on Foata normal form. 0/66 useless extension candidates. Maximal degree in co-relation 224. Up to 75 conditions per place. [2023-08-30 12:52:44,901 INFO L137 encePairwiseOnDemand]: 153/162 looper letters, 28 selfloop transitions, 2 changer transitions 0/31 dead transitions. [2023-08-30 12:52:44,902 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 22 places, 31 transitions, 127 flow [2023-08-30 12:52:44,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 12:52:44,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 12:52:44,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 246 transitions. [2023-08-30 12:52:44,917 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5061728395061729 [2023-08-30 12:52:44,918 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 246 transitions. [2023-08-30 12:52:44,918 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 246 transitions. [2023-08-30 12:52:44,920 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:52:44,922 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 246 transitions. [2023-08-30 12:52:44,927 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 82.0) internal successors, (246), 3 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:52:44,930 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 12:52:44,931 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 12:52:44,933 INFO L175 Difference]: Start difference. First operand has 21 places, 22 transitions, 49 flow. Second operand 3 states and 246 transitions. [2023-08-30 12:52:44,934 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 22 places, 31 transitions, 127 flow [2023-08-30 12:52:44,935 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 31 transitions, 127 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 12:52:44,936 INFO L231 Difference]: Finished difference. Result has 23 places, 21 transitions, 65 flow [2023-08-30 12:52:44,938 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=45, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=65, PETRI_PLACES=23, PETRI_TRANSITIONS=21} [2023-08-30 12:52:44,942 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 2 predicate places. [2023-08-30 12:52:44,943 INFO L495 AbstractCegarLoop]: Abstraction has has 23 places, 21 transitions, 65 flow [2023-08-30 12:52:44,943 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 70.66666666666667) internal successors, (212), 3 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:52:44,943 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:52:44,943 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-30 12:52:44,944 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 12:52:44,944 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-08-30 12:52:44,951 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:52:44,952 INFO L85 PathProgramCache]: Analyzing trace with hash -1831401969, now seen corresponding path program 1 times [2023-08-30 12:52:44,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:52:44,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560366064] [2023-08-30 12:52:44,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:52:44,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:52:44,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 12:52:44,984 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-30 12:52:44,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 12:52:45,012 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-30 12:52:45,012 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-30 12:52:45,013 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 17 remaining) [2023-08-30 12:52:45,015 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 17 remaining) [2023-08-30 12:52:45,015 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 17 remaining) [2023-08-30 12:52:45,015 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 17 remaining) [2023-08-30 12:52:45,015 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 17 remaining) [2023-08-30 12:52:45,016 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 17 remaining) [2023-08-30 12:52:45,016 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 17 remaining) [2023-08-30 12:52:45,016 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 17 remaining) [2023-08-30 12:52:45,016 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 17 remaining) [2023-08-30 12:52:45,016 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 17 remaining) [2023-08-30 12:52:45,017 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 17 remaining) [2023-08-30 12:52:45,017 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 17 remaining) [2023-08-30 12:52:45,017 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 17 remaining) [2023-08-30 12:52:45,017 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 17 remaining) [2023-08-30 12:52:45,017 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 17 remaining) [2023-08-30 12:52:45,017 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 17 remaining) [2023-08-30 12:52:45,018 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 17 remaining) [2023-08-30 12:52:45,020 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 12:52:45,020 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-08-30 12:52:45,023 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-30 12:52:45,023 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-30 12:52:45,064 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-30 12:52:45,071 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 129 places, 141 transitions, 294 flow [2023-08-30 12:52:45,095 INFO L130 PetriNetUnfolder]: 19/163 cut-off events. [2023-08-30 12:52:45,096 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 12:52:45,097 INFO L83 FinitePrefix]: Finished finitePrefix Result has 173 conditions, 163 events. 19/163 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 381 event pairs, 0 based on Foata normal form. 0/125 useless extension candidates. Maximal degree in co-relation 128. Up to 6 conditions per place. [2023-08-30 12:52:45,097 INFO L82 GeneralOperation]: Start removeDead. Operand has 129 places, 141 transitions, 294 flow [2023-08-30 12:52:45,099 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 129 places, 141 transitions, 294 flow [2023-08-30 12:52:45,099 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 12:52:45,099 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 129 places, 141 transitions, 294 flow [2023-08-30 12:52:45,099 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 129 places, 141 transitions, 294 flow [2023-08-30 12:52:45,099 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 129 places, 141 transitions, 294 flow [2023-08-30 12:52:45,115 INFO L130 PetriNetUnfolder]: 19/163 cut-off events. [2023-08-30 12:52:45,115 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 12:52:45,117 INFO L83 FinitePrefix]: Finished finitePrefix Result has 173 conditions, 163 events. 19/163 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 381 event pairs, 0 based on Foata normal form. 0/125 useless extension candidates. Maximal degree in co-relation 128. Up to 6 conditions per place. [2023-08-30 12:52:45,121 INFO L119 LiptonReduction]: Number of co-enabled transitions 9860 [2023-08-30 12:52:47,648 INFO L134 LiptonReduction]: Checked pairs total: 8204 [2023-08-30 12:52:47,648 INFO L136 LiptonReduction]: Total number of compositions: 140 [2023-08-30 12:52:47,650 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 12:52:47,651 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;@1f91c955, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 12:52:47,651 INFO L358 AbstractCegarLoop]: Starting to check reachability of 25 error locations. [2023-08-30 12:52:47,653 INFO L130 PetriNetUnfolder]: 0/7 cut-off events. [2023-08-30 12:52:47,653 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 12:52:47,653 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:52:47,654 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 12:52:47,654 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-08-30 12:52:47,654 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:52:47,654 INFO L85 PathProgramCache]: Analyzing trace with hash 679779375, now seen corresponding path program 1 times [2023-08-30 12:52:47,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:52:47,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748104490] [2023-08-30 12:52:47,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:52:47,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:52:47,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:52:47,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 12:52:47,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:52:47,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1748104490] [2023-08-30 12:52:47,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1748104490] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:52:47,729 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:52:47,730 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 12:52:47,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547259114] [2023-08-30 12:52:47,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:52:47,733 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 12:52:47,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:52:47,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 12:52:47,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 12:52:47,763 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 122 out of 281 [2023-08-30 12:52:47,764 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 40 transitions, 92 flow. Second operand has 3 states, 3 states have (on average 123.66666666666667) internal successors, (371), 3 states have internal predecessors, (371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:52:47,766 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:52:47,766 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 122 of 281 [2023-08-30 12:52:47,766 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:52:47,984 INFO L130 PetriNetUnfolder]: 1013/1583 cut-off events. [2023-08-30 12:52:47,985 INFO L131 PetriNetUnfolder]: For 60/60 co-relation queries the response was YES. [2023-08-30 12:52:47,987 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3228 conditions, 1583 events. 1013/1583 cut-off events. For 60/60 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 9198 event pairs, 480 based on Foata normal form. 0/656 useless extension candidates. Maximal degree in co-relation 1762. Up to 1009 conditions per place. [2023-08-30 12:52:47,995 INFO L137 encePairwiseOnDemand]: 271/281 looper letters, 58 selfloop transitions, 2 changer transitions 0/63 dead transitions. [2023-08-30 12:52:47,995 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 63 transitions, 263 flow [2023-08-30 12:52:47,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 12:52:47,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 12:52:47,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 437 transitions. [2023-08-30 12:52:47,998 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5183867141162515 [2023-08-30 12:52:47,998 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 437 transitions. [2023-08-30 12:52:47,998 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 437 transitions. [2023-08-30 12:52:47,998 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:52:47,998 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 437 transitions. [2023-08-30 12:52:48,000 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 145.66666666666666) internal successors, (437), 3 states have internal predecessors, (437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:52:48,002 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 281.0) internal successors, (1124), 4 states have internal predecessors, (1124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:52:48,002 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 281.0) internal successors, (1124), 4 states have internal predecessors, (1124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:52:48,003 INFO L175 Difference]: Start difference. First operand has 37 places, 40 transitions, 92 flow. Second operand 3 states and 437 transitions. [2023-08-30 12:52:48,003 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 63 transitions, 263 flow [2023-08-30 12:52:48,004 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 63 transitions, 261 flow, removed 1 selfloop flow, removed 0 redundant places. [2023-08-30 12:52:48,005 INFO L231 Difference]: Finished difference. Result has 39 places, 38 transitions, 104 flow [2023-08-30 12:52:48,005 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=281, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=104, PETRI_PLACES=39, PETRI_TRANSITIONS=38} [2023-08-30 12:52:48,006 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 2 predicate places. [2023-08-30 12:52:48,006 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 38 transitions, 104 flow [2023-08-30 12:52:48,006 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 123.66666666666667) internal successors, (371), 3 states have internal predecessors, (371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:52:48,006 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:52:48,007 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:52:48,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-30 12:52:48,007 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-08-30 12:52:48,007 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:52:48,007 INFO L85 PathProgramCache]: Analyzing trace with hash 433022647, now seen corresponding path program 1 times [2023-08-30 12:52:48,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:52:48,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957428272] [2023-08-30 12:52:48,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:52:48,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:52:48,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:52:48,067 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 12:52:48,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:52:48,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1957428272] [2023-08-30 12:52:48,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1957428272] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:52:48,068 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:52:48,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 12:52:48,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844921216] [2023-08-30 12:52:48,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:52:48,069 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 12:52:48,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:52:48,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 12:52:48,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 12:52:48,104 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 119 out of 281 [2023-08-30 12:52:48,105 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 38 transitions, 104 flow. Second operand has 4 states, 4 states have (on average 120.75) internal successors, (483), 4 states have internal predecessors, (483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:52:48,105 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:52:48,105 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 119 of 281 [2023-08-30 12:52:48,105 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:52:48,364 INFO L130 PetriNetUnfolder]: 1148/1802 cut-off events. [2023-08-30 12:52:48,364 INFO L131 PetriNetUnfolder]: For 219/219 co-relation queries the response was YES. [2023-08-30 12:52:48,366 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3983 conditions, 1802 events. 1148/1802 cut-off events. For 219/219 co-relation queries the response was YES. Maximal size of possible extension queue 199. Compared 10909 event pairs, 441 based on Foata normal form. 0/898 useless extension candidates. Maximal degree in co-relation 2044. Up to 936 conditions per place. [2023-08-30 12:52:48,375 INFO L137 encePairwiseOnDemand]: 276/281 looper letters, 76 selfloop transitions, 4 changer transitions 0/83 dead transitions. [2023-08-30 12:52:48,376 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 83 transitions, 368 flow [2023-08-30 12:52:48,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 12:52:48,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 12:52:48,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 557 transitions. [2023-08-30 12:52:48,379 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49555160142348753 [2023-08-30 12:52:48,382 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 557 transitions. [2023-08-30 12:52:48,382 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 557 transitions. [2023-08-30 12:52:48,383 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:52:48,383 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 557 transitions. [2023-08-30 12:52:48,384 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 139.25) internal successors, (557), 4 states have internal predecessors, (557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:52:48,386 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 281.0) internal successors, (1405), 5 states have internal predecessors, (1405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:52:48,387 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 281.0) internal successors, (1405), 5 states have internal predecessors, (1405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:52:48,387 INFO L175 Difference]: Start difference. First operand has 39 places, 38 transitions, 104 flow. Second operand 4 states and 557 transitions. [2023-08-30 12:52:48,387 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 83 transitions, 368 flow [2023-08-30 12:52:48,389 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 83 transitions, 366 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 12:52:48,390 INFO L231 Difference]: Finished difference. Result has 44 places, 40 transitions, 128 flow [2023-08-30 12:52:48,390 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=281, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=128, PETRI_PLACES=44, PETRI_TRANSITIONS=40} [2023-08-30 12:52:48,392 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 7 predicate places. [2023-08-30 12:52:48,392 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 40 transitions, 128 flow [2023-08-30 12:52:48,392 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 120.75) internal successors, (483), 4 states have internal predecessors, (483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:52:48,393 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:52:48,393 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:52:48,393 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-30 12:52:48,393 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-08-30 12:52:48,393 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:52:48,393 INFO L85 PathProgramCache]: Analyzing trace with hash 433024378, now seen corresponding path program 1 times [2023-08-30 12:52:48,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:52:48,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027862788] [2023-08-30 12:52:48,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:52:48,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:52:48,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:52:48,468 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 12:52:48,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:52:48,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027862788] [2023-08-30 12:52:48,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2027862788] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 12:52:48,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [425382662] [2023-08-30 12:52:48,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:52:48,470 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 12:52:48,470 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 12:52:48,477 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 12:52:48,508 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 12:52:48,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:52:48,548 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-30 12:52:48,550 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 12:52:48,577 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 12:52:48,577 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 12:52:48,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [425382662] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:52:48,578 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 12:52:48,578 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2023-08-30 12:52:48,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695396650] [2023-08-30 12:52:48,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:52:48,578 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 12:52:48,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:52:48,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 12:52:48,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-30 12:52:48,614 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 122 out of 281 [2023-08-30 12:52:48,615 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 40 transitions, 128 flow. Second operand has 4 states, 4 states have (on average 123.75) internal successors, (495), 4 states have internal predecessors, (495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:52:48,615 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:52:48,615 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 122 of 281 [2023-08-30 12:52:48,615 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:52:48,851 INFO L130 PetriNetUnfolder]: 968/1507 cut-off events. [2023-08-30 12:52:48,851 INFO L131 PetriNetUnfolder]: For 276/276 co-relation queries the response was YES. [2023-08-30 12:52:48,854 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3581 conditions, 1507 events. 968/1507 cut-off events. For 276/276 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 9267 event pairs, 12 based on Foata normal form. 28/971 useless extension candidates. Maximal degree in co-relation 3302. Up to 960 conditions per place. [2023-08-30 12:52:48,861 INFO L137 encePairwiseOnDemand]: 276/281 looper letters, 72 selfloop transitions, 2 changer transitions 0/77 dead transitions. [2023-08-30 12:52:48,862 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 77 transitions, 356 flow [2023-08-30 12:52:48,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 12:52:48,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 12:52:48,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 564 transitions. [2023-08-30 12:52:48,864 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.501779359430605 [2023-08-30 12:52:48,864 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 564 transitions. [2023-08-30 12:52:48,864 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 564 transitions. [2023-08-30 12:52:48,864 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:52:48,864 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 564 transitions. [2023-08-30 12:52:48,866 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 141.0) internal successors, (564), 4 states have internal predecessors, (564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:52:48,868 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 281.0) internal successors, (1405), 5 states have internal predecessors, (1405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:52:48,869 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 281.0) internal successors, (1405), 5 states have internal predecessors, (1405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:52:48,869 INFO L175 Difference]: Start difference. First operand has 44 places, 40 transitions, 128 flow. Second operand 4 states and 564 transitions. [2023-08-30 12:52:48,869 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 77 transitions, 356 flow [2023-08-30 12:52:48,874 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 77 transitions, 354 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 12:52:48,876 INFO L231 Difference]: Finished difference. Result has 43 places, 37 transitions, 118 flow [2023-08-30 12:52:48,876 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=281, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=118, PETRI_PLACES=43, PETRI_TRANSITIONS=37} [2023-08-30 12:52:48,877 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 6 predicate places. [2023-08-30 12:52:48,877 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 37 transitions, 118 flow [2023-08-30 12:52:48,878 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 123.75) internal successors, (495), 4 states have internal predecessors, (495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:52:48,878 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:52:48,878 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:52:48,883 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-08-30 12:52:49,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 12:52:49,084 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-08-30 12:52:49,084 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:52:49,084 INFO L85 PathProgramCache]: Analyzing trace with hash 433024432, now seen corresponding path program 1 times [2023-08-30 12:52:49,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:52:49,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740523774] [2023-08-30 12:52:49,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:52:49,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:52:49,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:52:49,120 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 12:52:49,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:52:49,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [740523774] [2023-08-30 12:52:49,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [740523774] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 12:52:49,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [898017662] [2023-08-30 12:52:49,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:52:49,122 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 12:52:49,123 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 12:52:49,124 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 12:52:49,127 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 12:52:49,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:52:49,175 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-30 12:52:49,175 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 12:52:49,185 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 12:52:49,186 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 12:52:49,203 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 12:52:49,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [898017662] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 12:52:49,206 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 12:52:49,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-30 12:52:49,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666489931] [2023-08-30 12:52:49,208 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 12:52:49,208 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 12:52:49,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:52:49,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 12:52:49,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-30 12:52:49,271 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 281 [2023-08-30 12:52:49,273 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 37 transitions, 118 flow. Second operand has 7 states, 7 states have (on average 123.0) internal successors, (861), 7 states have internal predecessors, (861), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:52:49,274 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:52:49,274 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 281 [2023-08-30 12:52:49,274 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:52:49,627 INFO L130 PetriNetUnfolder]: 1620/2498 cut-off events. [2023-08-30 12:52:49,627 INFO L131 PetriNetUnfolder]: For 531/531 co-relation queries the response was YES. [2023-08-30 12:52:49,631 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5850 conditions, 2498 events. 1620/2498 cut-off events. For 531/531 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 14969 event pairs, 129 based on Foata normal form. 84/1672 useless extension candidates. Maximal degree in co-relation 4934. Up to 595 conditions per place. [2023-08-30 12:52:49,641 INFO L137 encePairwiseOnDemand]: 275/281 looper letters, 119 selfloop transitions, 7 changer transitions 0/129 dead transitions. [2023-08-30 12:52:49,641 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 129 transitions, 594 flow [2023-08-30 12:52:49,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 12:52:49,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 12:52:49,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 858 transitions. [2023-08-30 12:52:49,644 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5088967971530249 [2023-08-30 12:52:49,644 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 858 transitions. [2023-08-30 12:52:49,644 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 858 transitions. [2023-08-30 12:52:49,645 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:52:49,645 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 858 transitions. [2023-08-30 12:52:49,646 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 143.0) internal successors, (858), 6 states have internal predecessors, (858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:52:49,649 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 281.0) internal successors, (1967), 7 states have internal predecessors, (1967), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:52:49,650 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 281.0) internal successors, (1967), 7 states have internal predecessors, (1967), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:52:49,650 INFO L175 Difference]: Start difference. First operand has 43 places, 37 transitions, 118 flow. Second operand 6 states and 858 transitions. [2023-08-30 12:52:49,650 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 129 transitions, 594 flow [2023-08-30 12:52:49,652 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 129 transitions, 591 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 12:52:49,653 INFO L231 Difference]: Finished difference. Result has 49 places, 40 transitions, 161 flow [2023-08-30 12:52:49,653 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=281, PETRI_DIFFERENCE_MINUEND_FLOW=111, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=161, PETRI_PLACES=49, PETRI_TRANSITIONS=40} [2023-08-30 12:52:49,654 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 12 predicate places. [2023-08-30 12:52:49,654 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 40 transitions, 161 flow [2023-08-30 12:52:49,655 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 123.0) internal successors, (861), 7 states have internal predecessors, (861), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:52:49,655 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:52:49,655 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:52:49,661 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-30 12:52:49,861 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-08-30 12:52:49,861 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-08-30 12:52:49,861 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:52:49,862 INFO L85 PathProgramCache]: Analyzing trace with hash 433022648, now seen corresponding path program 1 times [2023-08-30 12:52:49,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:52:49,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351900] [2023-08-30 12:52:49,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:52:49,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:52:49,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:52:49,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 12:52:49,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:52:49,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1351900] [2023-08-30 12:52:49,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1351900] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:52:49,906 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:52:49,906 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 12:52:49,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900278131] [2023-08-30 12:52:49,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:52:49,906 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 12:52:49,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:52:49,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 12:52:49,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 12:52:49,945 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 119 out of 281 [2023-08-30 12:52:49,945 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 40 transitions, 161 flow. Second operand has 4 states, 4 states have (on average 120.75) internal successors, (483), 4 states have internal predecessors, (483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:52:49,945 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:52:49,945 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 119 of 281 [2023-08-30 12:52:49,945 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:52:50,278 INFO L130 PetriNetUnfolder]: 1901/2922 cut-off events. [2023-08-30 12:52:50,278 INFO L131 PetriNetUnfolder]: For 1508/1508 co-relation queries the response was YES. [2023-08-30 12:52:50,284 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7526 conditions, 2922 events. 1901/2922 cut-off events. For 1508/1508 co-relation queries the response was YES. Maximal size of possible extension queue 233. Compared 17670 event pairs, 831 based on Foata normal form. 28/2007 useless extension candidates. Maximal degree in co-relation 4960. Up to 1806 conditions per place. [2023-08-30 12:52:50,315 INFO L137 encePairwiseOnDemand]: 275/281 looper letters, 95 selfloop transitions, 6 changer transitions 0/104 dead transitions. [2023-08-30 12:52:50,316 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 104 transitions, 527 flow [2023-08-30 12:52:50,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 12:52:50,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 12:52:50,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 692 transitions. [2023-08-30 12:52:50,318 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4925266903914591 [2023-08-30 12:52:50,318 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 692 transitions. [2023-08-30 12:52:50,318 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 692 transitions. [2023-08-30 12:52:50,319 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:52:50,319 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 692 transitions. [2023-08-30 12:52:50,320 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 138.4) internal successors, (692), 5 states have internal predecessors, (692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:52:50,322 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 281.0) internal successors, (1686), 6 states have internal predecessors, (1686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:52:50,323 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 281.0) internal successors, (1686), 6 states have internal predecessors, (1686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:52:50,323 INFO L175 Difference]: Start difference. First operand has 49 places, 40 transitions, 161 flow. Second operand 5 states and 692 transitions. [2023-08-30 12:52:50,323 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 104 transitions, 527 flow [2023-08-30 12:52:50,328 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 104 transitions, 516 flow, removed 4 selfloop flow, removed 1 redundant places. [2023-08-30 12:52:50,329 INFO L231 Difference]: Finished difference. Result has 54 places, 43 transitions, 193 flow [2023-08-30 12:52:50,329 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=281, PETRI_DIFFERENCE_MINUEND_FLOW=151, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=193, PETRI_PLACES=54, PETRI_TRANSITIONS=43} [2023-08-30 12:52:50,330 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 17 predicate places. [2023-08-30 12:52:50,330 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 43 transitions, 193 flow [2023-08-30 12:52:50,330 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 120.75) internal successors, (483), 4 states have internal predecessors, (483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:52:50,330 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:52:50,330 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:52:50,331 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-30 12:52:50,331 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-08-30 12:52:50,331 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:52:50,331 INFO L85 PathProgramCache]: Analyzing trace with hash 433022663, now seen corresponding path program 1 times [2023-08-30 12:52:50,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:52:50,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25422706] [2023-08-30 12:52:50,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:52:50,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:52:50,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:52:50,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 12:52:50,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:52:50,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25422706] [2023-08-30 12:52:50,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [25422706] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:52:50,380 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:52:50,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 12:52:50,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200102792] [2023-08-30 12:52:50,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:52:50,381 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 12:52:50,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:52:50,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 12:52:50,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-30 12:52:50,431 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 281 [2023-08-30 12:52:50,432 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 43 transitions, 193 flow. Second operand has 5 states, 5 states have (on average 116.4) internal successors, (582), 5 states have internal predecessors, (582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:52:50,432 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:52:50,432 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 281 [2023-08-30 12:52:50,432 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:52:50,810 INFO L130 PetriNetUnfolder]: 2047/3124 cut-off events. [2023-08-30 12:52:50,810 INFO L131 PetriNetUnfolder]: For 2408/2408 co-relation queries the response was YES. [2023-08-30 12:52:50,817 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8527 conditions, 3124 events. 2047/3124 cut-off events. For 2408/2408 co-relation queries the response was YES. Maximal size of possible extension queue 255. Compared 18824 event pairs, 1026 based on Foata normal form. 28/2310 useless extension candidates. Maximal degree in co-relation 5175. Up to 2199 conditions per place. [2023-08-30 12:52:50,839 INFO L137 encePairwiseOnDemand]: 275/281 looper letters, 113 selfloop transitions, 8 changer transitions 0/124 dead transitions. [2023-08-30 12:52:50,839 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 124 transitions, 642 flow [2023-08-30 12:52:50,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 12:52:50,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 12:52:50,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 806 transitions. [2023-08-30 12:52:50,842 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47805456702253857 [2023-08-30 12:52:50,842 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 806 transitions. [2023-08-30 12:52:50,842 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 806 transitions. [2023-08-30 12:52:50,842 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:52:50,843 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 806 transitions. [2023-08-30 12:52:50,844 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 134.33333333333334) internal successors, (806), 6 states have internal predecessors, (806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:52:50,846 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 281.0) internal successors, (1967), 7 states have internal predecessors, (1967), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:52:50,847 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 281.0) internal successors, (1967), 7 states have internal predecessors, (1967), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:52:50,847 INFO L175 Difference]: Start difference. First operand has 54 places, 43 transitions, 193 flow. Second operand 6 states and 806 transitions. [2023-08-30 12:52:50,847 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 124 transitions, 642 flow [2023-08-30 12:52:50,877 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 124 transitions, 632 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-30 12:52:50,879 INFO L231 Difference]: Finished difference. Result has 59 places, 47 transitions, 235 flow [2023-08-30 12:52:50,879 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=281, PETRI_DIFFERENCE_MINUEND_FLOW=185, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=235, PETRI_PLACES=59, PETRI_TRANSITIONS=47} [2023-08-30 12:52:50,880 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 22 predicate places. [2023-08-30 12:52:50,880 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 47 transitions, 235 flow [2023-08-30 12:52:50,881 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 116.4) internal successors, (582), 5 states have internal predecessors, (582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:52:50,881 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:52:50,881 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:52:50,881 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-30 12:52:50,881 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-08-30 12:52:50,882 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:52:50,883 INFO L85 PathProgramCache]: Analyzing trace with hash 538801273, now seen corresponding path program 1 times [2023-08-30 12:52:50,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:52:50,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [935240621] [2023-08-30 12:52:50,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:52:50,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:52:50,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:52:50,969 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 12:52:50,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:52:50,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [935240621] [2023-08-30 12:52:50,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [935240621] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 12:52:50,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1548462949] [2023-08-30 12:52:50,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:52:50,970 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 12:52:50,970 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 12:52:50,973 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 12:52:51,001 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 12:52:51,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:52:51,033 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 12:52:51,033 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 12:52:51,065 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 12:52:51,065 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 12:52:51,102 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 12:52:51,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1548462949] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 12:52:51,102 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 12:52:51,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 13 [2023-08-30 12:52:51,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084674683] [2023-08-30 12:52:51,103 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 12:52:51,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-30 12:52:51,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:52:51,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-30 12:52:51,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2023-08-30 12:52:51,281 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 281 [2023-08-30 12:52:51,283 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 47 transitions, 235 flow. Second operand has 14 states, 14 states have (on average 115.28571428571429) internal successors, (1614), 14 states have internal predecessors, (1614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:52:51,283 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:52:51,283 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 281 [2023-08-30 12:52:51,283 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:52:53,070 INFO L130 PetriNetUnfolder]: 6605/9981 cut-off events. [2023-08-30 12:52:53,071 INFO L131 PetriNetUnfolder]: For 4571/4571 co-relation queries the response was YES. [2023-08-30 12:52:53,102 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28423 conditions, 9981 events. 6605/9981 cut-off events. For 4571/4571 co-relation queries the response was YES. Maximal size of possible extension queue 855. Compared 69616 event pairs, 597 based on Foata normal form. 364/7694 useless extension candidates. Maximal degree in co-relation 22980. Up to 1681 conditions per place. [2023-08-30 12:52:53,155 INFO L137 encePairwiseOnDemand]: 272/281 looper letters, 690 selfloop transitions, 67 changer transitions 0/760 dead transitions. [2023-08-30 12:52:53,155 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 760 transitions, 3745 flow [2023-08-30 12:52:53,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2023-08-30 12:52:53,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2023-08-30 12:52:53,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 4977 transitions. [2023-08-30 12:52:53,169 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47869577762816196 [2023-08-30 12:52:53,169 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 4977 transitions. [2023-08-30 12:52:53,169 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 4977 transitions. [2023-08-30 12:52:53,172 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:52:53,172 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 4977 transitions. [2023-08-30 12:52:53,184 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 134.51351351351352) internal successors, (4977), 37 states have internal predecessors, (4977), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:52:53,200 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 281.0) internal successors, (10678), 38 states have internal predecessors, (10678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:52:53,203 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 281.0) internal successors, (10678), 38 states have internal predecessors, (10678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:52:53,203 INFO L175 Difference]: Start difference. First operand has 59 places, 47 transitions, 235 flow. Second operand 37 states and 4977 transitions. [2023-08-30 12:52:53,203 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 760 transitions, 3745 flow [2023-08-30 12:52:53,294 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 760 transitions, 3713 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-08-30 12:52:53,299 INFO L231 Difference]: Finished difference. Result has 109 places, 115 transitions, 882 flow [2023-08-30 12:52:53,299 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=281, PETRI_DIFFERENCE_MINUEND_FLOW=221, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=882, PETRI_PLACES=109, PETRI_TRANSITIONS=115} [2023-08-30 12:52:53,300 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 72 predicate places. [2023-08-30 12:52:53,300 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 115 transitions, 882 flow [2023-08-30 12:52:53,300 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 115.28571428571429) internal successors, (1614), 14 states have internal predecessors, (1614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:52:53,301 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:52:53,301 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:52:53,308 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 12:52:53,505 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 12:52:53,506 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-08-30 12:52:53,506 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:52:53,506 INFO L85 PathProgramCache]: Analyzing trace with hash -232177780, now seen corresponding path program 1 times [2023-08-30 12:52:53,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:52:53,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485737504] [2023-08-30 12:52:53,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:52:53,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:52:53,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:52:53,533 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 12:52:53,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:52:53,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [485737504] [2023-08-30 12:52:53,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [485737504] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:52:53,534 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:52:53,534 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 12:52:53,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238184711] [2023-08-30 12:52:53,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:52:53,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 12:52:53,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:52:53,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 12:52:53,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 12:52:53,553 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 122 out of 281 [2023-08-30 12:52:53,554 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 115 transitions, 882 flow. Second operand has 3 states, 3 states have (on average 124.0) internal successors, (372), 3 states have internal predecessors, (372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:52:53,554 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:52:53,554 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 122 of 281 [2023-08-30 12:52:53,554 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:52:55,526 INFO L130 PetriNetUnfolder]: 10207/15272 cut-off events. [2023-08-30 12:52:55,526 INFO L131 PetriNetUnfolder]: For 51781/51781 co-relation queries the response was YES. [2023-08-30 12:52:55,587 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53016 conditions, 15272 events. 10207/15272 cut-off events. For 51781/51781 co-relation queries the response was YES. Maximal size of possible extension queue 1239. Compared 110346 event pairs, 4681 based on Foata normal form. 0/11186 useless extension candidates. Maximal degree in co-relation 46982. Up to 9968 conditions per place. [2023-08-30 12:52:55,678 INFO L137 encePairwiseOnDemand]: 274/281 looper letters, 213 selfloop transitions, 2 changer transitions 0/218 dead transitions. [2023-08-30 12:52:55,678 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 218 transitions, 2160 flow [2023-08-30 12:52:55,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 12:52:55,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 12:52:55,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 422 transitions. [2023-08-30 12:52:55,680 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5005931198102017 [2023-08-30 12:52:55,680 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 422 transitions. [2023-08-30 12:52:55,680 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 422 transitions. [2023-08-30 12:52:55,681 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:52:55,681 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 422 transitions. [2023-08-30 12:52:55,682 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 140.66666666666666) internal successors, (422), 3 states have internal predecessors, (422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:52:55,683 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 281.0) internal successors, (1124), 4 states have internal predecessors, (1124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:52:55,683 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 281.0) internal successors, (1124), 4 states have internal predecessors, (1124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:52:55,684 INFO L175 Difference]: Start difference. First operand has 109 places, 115 transitions, 882 flow. Second operand 3 states and 422 transitions. [2023-08-30 12:52:55,684 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 218 transitions, 2160 flow [2023-08-30 12:52:55,872 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 218 transitions, 1772 flow, removed 128 selfloop flow, removed 8 redundant places. [2023-08-30 12:52:55,876 INFO L231 Difference]: Finished difference. Result has 104 places, 116 transitions, 708 flow [2023-08-30 12:52:55,876 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=281, PETRI_DIFFERENCE_MINUEND_FLOW=688, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=708, PETRI_PLACES=104, PETRI_TRANSITIONS=116} [2023-08-30 12:52:55,877 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 67 predicate places. [2023-08-30 12:52:55,877 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 116 transitions, 708 flow [2023-08-30 12:52:55,878 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 124.0) internal successors, (372), 3 states have internal predecessors, (372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:52:55,878 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:52:55,878 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:52:55,878 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-30 12:52:55,878 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-08-30 12:52:55,878 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:52:55,879 INFO L85 PathProgramCache]: Analyzing trace with hash -475328190, now seen corresponding path program 1 times [2023-08-30 12:52:55,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:52:55,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908517341] [2023-08-30 12:52:55,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:52:55,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:52:55,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:52:55,930 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 12:52:55,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:52:55,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908517341] [2023-08-30 12:52:55,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [908517341] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 12:52:55,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [693163790] [2023-08-30 12:52:55,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:52:55,931 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 12:52:55,931 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 12:52:55,932 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 12:52:55,955 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 12:52:55,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:52:55,990 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-30 12:52:55,990 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 12:52:56,007 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 12:52:56,008 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 12:52:56,037 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 12:52:56,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [693163790] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 12:52:56,037 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 12:52:56,038 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2023-08-30 12:52:56,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90878298] [2023-08-30 12:52:56,038 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 12:52:56,039 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-30 12:52:56,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:52:56,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-30 12:52:56,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2023-08-30 12:52:56,136 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 281 [2023-08-30 12:52:56,137 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 116 transitions, 708 flow. Second operand has 9 states, 9 states have (on average 120.0) internal successors, (1080), 9 states have internal predecessors, (1080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:52:56,138 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:52:56,138 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 281 [2023-08-30 12:52:56,138 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:52:57,630 INFO L130 PetriNetUnfolder]: 9815/14652 cut-off events. [2023-08-30 12:52:57,630 INFO L131 PetriNetUnfolder]: For 24827/24827 co-relation queries the response was YES. [2023-08-30 12:52:57,698 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49013 conditions, 14652 events. 9815/14652 cut-off events. For 24827/24827 co-relation queries the response was YES. Maximal size of possible extension queue 1174. Compared 108504 event pairs, 61 based on Foata normal form. 252/11913 useless extension candidates. Maximal degree in co-relation 46714. Up to 9450 conditions per place. [2023-08-30 12:52:57,859 INFO L137 encePairwiseOnDemand]: 276/281 looper letters, 168 selfloop transitions, 16 changer transitions 0/187 dead transitions. [2023-08-30 12:52:57,859 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 187 transitions, 1321 flow [2023-08-30 12:52:57,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 12:52:57,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 12:52:57,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 816 transitions. [2023-08-30 12:52:57,862 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48398576512455516 [2023-08-30 12:52:57,862 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 816 transitions. [2023-08-30 12:52:57,862 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 816 transitions. [2023-08-30 12:52:57,863 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:52:57,863 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 816 transitions. [2023-08-30 12:52:57,865 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 136.0) internal successors, (816), 6 states have internal predecessors, (816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:52:57,868 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 281.0) internal successors, (1967), 7 states have internal predecessors, (1967), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:52:57,868 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 281.0) internal successors, (1967), 7 states have internal predecessors, (1967), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:52:57,868 INFO L175 Difference]: Start difference. First operand has 104 places, 116 transitions, 708 flow. Second operand 6 states and 816 transitions. [2023-08-30 12:52:57,869 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 187 transitions, 1321 flow [2023-08-30 12:52:58,169 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 187 transitions, 1311 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 12:52:58,171 INFO L231 Difference]: Finished difference. Result has 103 places, 111 transitions, 709 flow [2023-08-30 12:52:58,171 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=281, PETRI_DIFFERENCE_MINUEND_FLOW=677, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=709, PETRI_PLACES=103, PETRI_TRANSITIONS=111} [2023-08-30 12:52:58,172 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 66 predicate places. [2023-08-30 12:52:58,172 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 111 transitions, 709 flow [2023-08-30 12:52:58,172 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 120.0) internal successors, (1080), 9 states have internal predecessors, (1080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:52:58,173 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:52:58,173 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-30 12:52:58,180 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-08-30 12:52:58,380 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 12:52:58,380 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-08-30 12:52:58,380 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:52:58,381 INFO L85 PathProgramCache]: Analyzing trace with hash 206766380, now seen corresponding path program 1 times [2023-08-30 12:52:58,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:52:58,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155329103] [2023-08-30 12:52:58,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:52:58,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:52:58,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 12:52:58,388 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-30 12:52:58,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 12:52:58,397 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-30 12:52:58,397 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-30 12:52:58,397 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (24 of 25 remaining) [2023-08-30 12:52:58,398 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 25 remaining) [2023-08-30 12:52:58,398 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 25 remaining) [2023-08-30 12:52:58,398 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 25 remaining) [2023-08-30 12:52:58,398 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 25 remaining) [2023-08-30 12:52:58,398 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 25 remaining) [2023-08-30 12:52:58,398 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 25 remaining) [2023-08-30 12:52:58,398 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 25 remaining) [2023-08-30 12:52:58,398 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 25 remaining) [2023-08-30 12:52:58,398 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 25 remaining) [2023-08-30 12:52:58,398 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 25 remaining) [2023-08-30 12:52:58,398 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 25 remaining) [2023-08-30 12:52:58,398 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 25 remaining) [2023-08-30 12:52:58,399 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 25 remaining) [2023-08-30 12:52:58,399 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 25 remaining) [2023-08-30 12:52:58,399 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 25 remaining) [2023-08-30 12:52:58,399 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 25 remaining) [2023-08-30 12:52:58,399 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 25 remaining) [2023-08-30 12:52:58,399 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 25 remaining) [2023-08-30 12:52:58,399 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 25 remaining) [2023-08-30 12:52:58,399 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 25 remaining) [2023-08-30 12:52:58,400 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 25 remaining) [2023-08-30 12:52:58,400 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 25 remaining) [2023-08-30 12:52:58,400 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 25 remaining) [2023-08-30 12:52:58,401 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 25 remaining) [2023-08-30 12:52:58,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-30 12:52:58,401 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:52:58,402 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-30 12:52:58,402 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-08-30 12:52:58,433 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-30 12:52:58,436 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 182 places, 200 transitions, 421 flow [2023-08-30 12:52:58,462 INFO L130 PetriNetUnfolder]: 28/234 cut-off events. [2023-08-30 12:52:58,462 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2023-08-30 12:52:58,464 INFO L83 FinitePrefix]: Finished finitePrefix Result has 250 conditions, 234 events. 28/234 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 737 event pairs, 0 based on Foata normal form. 0/178 useless extension candidates. Maximal degree in co-relation 186. Up to 8 conditions per place. [2023-08-30 12:52:58,465 INFO L82 GeneralOperation]: Start removeDead. Operand has 182 places, 200 transitions, 421 flow [2023-08-30 12:52:58,469 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 182 places, 200 transitions, 421 flow [2023-08-30 12:52:58,470 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 12:52:58,470 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 182 places, 200 transitions, 421 flow [2023-08-30 12:52:58,470 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 182 places, 200 transitions, 421 flow [2023-08-30 12:52:58,470 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 182 places, 200 transitions, 421 flow [2023-08-30 12:52:58,492 INFO L130 PetriNetUnfolder]: 28/234 cut-off events. [2023-08-30 12:52:58,492 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2023-08-30 12:52:58,495 INFO L83 FinitePrefix]: Finished finitePrefix Result has 250 conditions, 234 events. 28/234 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 737 event pairs, 0 based on Foata normal form. 0/178 useless extension candidates. Maximal degree in co-relation 186. Up to 8 conditions per place. [2023-08-30 12:52:58,506 INFO L119 LiptonReduction]: Number of co-enabled transitions 25056 [2023-08-30 12:53:02,069 INFO L134 LiptonReduction]: Checked pairs total: 20958 [2023-08-30 12:53:02,069 INFO L136 LiptonReduction]: Total number of compositions: 203 [2023-08-30 12:53:02,070 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 12:53:02,070 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;@1f91c955, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 12:53:02,070 INFO L358 AbstractCegarLoop]: Starting to check reachability of 33 error locations. [2023-08-30 12:53:02,072 INFO L130 PetriNetUnfolder]: 0/7 cut-off events. [2023-08-30 12:53:02,072 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 12:53:02,072 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:53:02,072 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 12:53:02,072 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2023-08-30 12:53:02,072 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:53:02,072 INFO L85 PathProgramCache]: Analyzing trace with hash 1117687227, now seen corresponding path program 1 times [2023-08-30 12:53:02,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:53:02,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [930067795] [2023-08-30 12:53:02,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:53:02,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:53:02,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:53:02,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 12:53:02,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:53:02,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [930067795] [2023-08-30 12:53:02,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [930067795] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:53:02,089 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:53:02,089 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 12:53:02,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775971474] [2023-08-30 12:53:02,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:53:02,090 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 12:53:02,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:53:02,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 12:53:02,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 12:53:02,117 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 175 out of 403 [2023-08-30 12:53:02,118 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 57 transitions, 135 flow. Second operand has 3 states, 3 states have (on average 176.66666666666666) internal successors, (530), 3 states have internal predecessors, (530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:53:02,118 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:53:02,118 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 175 of 403 [2023-08-30 12:53:02,118 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:53:03,555 INFO L130 PetriNetUnfolder]: 21605/29284 cut-off events. [2023-08-30 12:53:03,556 INFO L131 PetriNetUnfolder]: For 1963/1963 co-relation queries the response was YES. [2023-08-30 12:53:03,591 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59669 conditions, 29284 events. 21605/29284 cut-off events. For 1963/1963 co-relation queries the response was YES. Maximal size of possible extension queue 2024. Compared 185841 event pairs, 10620 based on Foata normal form. 0/11007 useless extension candidates. Maximal degree in co-relation 8538. Up to 18585 conditions per place. [2023-08-30 12:53:03,730 INFO L137 encePairwiseOnDemand]: 392/403 looper letters, 90 selfloop transitions, 2 changer transitions 0/95 dead transitions. [2023-08-30 12:53:03,731 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 95 transitions, 407 flow [2023-08-30 12:53:03,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 12:53:03,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 12:53:03,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 630 transitions. [2023-08-30 12:53:03,733 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5210918114143921 [2023-08-30 12:53:03,733 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 630 transitions. [2023-08-30 12:53:03,733 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 630 transitions. [2023-08-30 12:53:03,734 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:53:03,734 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 630 transitions. [2023-08-30 12:53:03,735 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 210.0) internal successors, (630), 3 states have internal predecessors, (630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:53:03,737 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 403.0) internal successors, (1612), 4 states have internal predecessors, (1612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:53:03,737 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 403.0) internal successors, (1612), 4 states have internal predecessors, (1612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:53:03,738 INFO L175 Difference]: Start difference. First operand has 52 places, 57 transitions, 135 flow. Second operand 3 states and 630 transitions. [2023-08-30 12:53:03,738 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 95 transitions, 407 flow [2023-08-30 12:53:03,740 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 95 transitions, 399 flow, removed 4 selfloop flow, removed 0 redundant places. [2023-08-30 12:53:03,743 INFO L231 Difference]: Finished difference. Result has 54 places, 54 transitions, 141 flow [2023-08-30 12:53:03,743 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=403, PETRI_DIFFERENCE_MINUEND_FLOW=121, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=141, PETRI_PLACES=54, PETRI_TRANSITIONS=54} [2023-08-30 12:53:03,744 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 2 predicate places. [2023-08-30 12:53:03,744 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 54 transitions, 141 flow [2023-08-30 12:53:03,744 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 176.66666666666666) internal successors, (530), 3 states have internal predecessors, (530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:53:03,744 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:53:03,744 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:53:03,745 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-30 12:53:03,745 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2023-08-30 12:53:03,745 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:53:03,745 INFO L85 PathProgramCache]: Analyzing trace with hash 355736743, now seen corresponding path program 1 times [2023-08-30 12:53:03,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:53:03,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860311524] [2023-08-30 12:53:03,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:53:03,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:53:03,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:53:03,774 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 12:53:03,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:53:03,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1860311524] [2023-08-30 12:53:03,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1860311524] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 12:53:03,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [438364469] [2023-08-30 12:53:03,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:53:03,775 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 12:53:03,775 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 12:53:03,776 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 12:53:03,802 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-30 12:53:03,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:53:03,841 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-30 12:53:03,842 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 12:53:03,853 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 12:53:03,854 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 12:53:03,870 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 12:53:03,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [438364469] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 12:53:03,871 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 12:53:03,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-30 12:53:03,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693086668] [2023-08-30 12:53:03,871 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 12:53:03,871 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 12:53:03,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:53:03,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 12:53:03,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-30 12:53:03,929 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 174 out of 403 [2023-08-30 12:53:03,930 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 54 transitions, 141 flow. Second operand has 7 states, 7 states have (on average 176.0) internal successors, (1232), 7 states have internal predecessors, (1232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:53:03,930 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:53:03,930 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 174 of 403 [2023-08-30 12:53:03,931 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:53:06,925 INFO L130 PetriNetUnfolder]: 40736/53608 cut-off events. [2023-08-30 12:53:06,926 INFO L131 PetriNetUnfolder]: For 2924/2924 co-relation queries the response was YES. [2023-08-30 12:53:07,017 INFO L83 FinitePrefix]: Finished finitePrefix Result has 114875 conditions, 53608 events. 40736/53608 cut-off events. For 2924/2924 co-relation queries the response was YES. Maximal size of possible extension queue 2616. Compared 345043 event pairs, 3015 based on Foata normal form. 0/23620 useless extension candidates. Maximal degree in co-relation 104554. Up to 10709 conditions per place. [2023-08-30 12:53:07,207 INFO L137 encePairwiseOnDemand]: 394/403 looper letters, 233 selfloop transitions, 17 changer transitions 0/253 dead transitions. [2023-08-30 12:53:07,207 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 253 transitions, 1105 flow [2023-08-30 12:53:07,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 12:53:07,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 12:53:07,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1474 transitions. [2023-08-30 12:53:07,211 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5225097483161999 [2023-08-30 12:53:07,211 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1474 transitions. [2023-08-30 12:53:07,211 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1474 transitions. [2023-08-30 12:53:07,212 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:53:07,212 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1474 transitions. [2023-08-30 12:53:07,214 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 210.57142857142858) internal successors, (1474), 7 states have internal predecessors, (1474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:53:07,218 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 403.0) internal successors, (3224), 8 states have internal predecessors, (3224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:53:07,219 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 403.0) internal successors, (3224), 8 states have internal predecessors, (3224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:53:07,219 INFO L175 Difference]: Start difference. First operand has 54 places, 54 transitions, 141 flow. Second operand 7 states and 1474 transitions. [2023-08-30 12:53:07,219 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 253 transitions, 1105 flow [2023-08-30 12:53:07,221 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 253 transitions, 1103 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 12:53:07,222 INFO L231 Difference]: Finished difference. Result has 62 places, 64 transitions, 241 flow [2023-08-30 12:53:07,223 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=403, PETRI_DIFFERENCE_MINUEND_FLOW=135, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=241, PETRI_PLACES=62, PETRI_TRANSITIONS=64} [2023-08-30 12:53:07,223 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 10 predicate places. [2023-08-30 12:53:07,223 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 64 transitions, 241 flow [2023-08-30 12:53:07,224 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 176.0) internal successors, (1232), 7 states have internal predecessors, (1232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:53:07,224 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:53:07,224 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:53:07,236 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-30 12:53:07,433 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-08-30 12:53:07,435 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2023-08-30 12:53:07,436 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:53:07,436 INFO L85 PathProgramCache]: Analyzing trace with hash 355736638, now seen corresponding path program 1 times [2023-08-30 12:53:07,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:53:07,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354363824] [2023-08-30 12:53:07,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:53:07,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:53:07,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:53:07,463 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 12:53:07,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:53:07,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1354363824] [2023-08-30 12:53:07,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1354363824] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:53:07,464 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:53:07,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 12:53:07,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049245642] [2023-08-30 12:53:07,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:53:07,464 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 12:53:07,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:53:07,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 12:53:07,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 12:53:07,484 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 175 out of 403 [2023-08-30 12:53:07,485 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 64 transitions, 241 flow. Second operand has 3 states, 3 states have (on average 177.33333333333334) internal successors, (532), 3 states have internal predecessors, (532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:53:07,485 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:53:07,485 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 175 of 403 [2023-08-30 12:53:07,485 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:53:09,976 INFO L130 PetriNetUnfolder]: 35153/46898 cut-off events. [2023-08-30 12:53:09,977 INFO L131 PetriNetUnfolder]: For 9024/9024 co-relation queries the response was YES. [2023-08-30 12:53:10,078 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105744 conditions, 46898 events. 35153/46898 cut-off events. For 9024/9024 co-relation queries the response was YES. Maximal size of possible extension queue 2297. Compared 317187 event pairs, 480 based on Foata normal form. 3660/27144 useless extension candidates. Maximal degree in co-relation 105282. Up to 45857 conditions per place. [2023-08-30 12:53:10,380 INFO L137 encePairwiseOnDemand]: 399/403 looper letters, 83 selfloop transitions, 1 changer transitions 0/87 dead transitions. [2023-08-30 12:53:10,381 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 87 transitions, 415 flow [2023-08-30 12:53:10,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 12:53:10,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 12:53:10,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 607 transitions. [2023-08-30 12:53:10,383 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5020678246484698 [2023-08-30 12:53:10,383 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 607 transitions. [2023-08-30 12:53:10,383 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 607 transitions. [2023-08-30 12:53:10,383 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:53:10,383 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 607 transitions. [2023-08-30 12:53:10,384 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 202.33333333333334) internal successors, (607), 3 states have internal predecessors, (607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:53:10,386 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 403.0) internal successors, (1612), 4 states have internal predecessors, (1612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:53:10,386 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 403.0) internal successors, (1612), 4 states have internal predecessors, (1612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:53:10,386 INFO L175 Difference]: Start difference. First operand has 62 places, 64 transitions, 241 flow. Second operand 3 states and 607 transitions. [2023-08-30 12:53:10,386 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 87 transitions, 415 flow [2023-08-30 12:53:10,444 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 87 transitions, 407 flow, removed 3 selfloop flow, removed 1 redundant places. [2023-08-30 12:53:10,445 INFO L231 Difference]: Finished difference. Result has 59 places, 54 transitions, 165 flow [2023-08-30 12:53:10,446 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=403, PETRI_DIFFERENCE_MINUEND_FLOW=163, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=165, PETRI_PLACES=59, PETRI_TRANSITIONS=54} [2023-08-30 12:53:10,446 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 7 predicate places. [2023-08-30 12:53:10,446 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 54 transitions, 165 flow [2023-08-30 12:53:10,447 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 177.33333333333334) internal successors, (532), 3 states have internal predecessors, (532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:53:10,447 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:53:10,447 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:53:10,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-30 12:53:10,448 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2023-08-30 12:53:10,448 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:53:10,448 INFO L85 PathProgramCache]: Analyzing trace with hash 355734245, now seen corresponding path program 1 times [2023-08-30 12:53:10,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:53:10,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11907256] [2023-08-30 12:53:10,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:53:10,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:53:10,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:53:10,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 12:53:10,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:53:10,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [11907256] [2023-08-30 12:53:10,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [11907256] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:53:10,480 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:53:10,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 12:53:10,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807827172] [2023-08-30 12:53:10,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:53:10,481 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 12:53:10,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:53:10,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 12:53:10,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 12:53:10,527 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 172 out of 403 [2023-08-30 12:53:10,528 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 54 transitions, 165 flow. Second operand has 4 states, 4 states have (on average 173.75) internal successors, (695), 4 states have internal predecessors, (695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:53:10,528 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:53:10,528 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 172 of 403 [2023-08-30 12:53:10,528 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:53:13,059 INFO L130 PetriNetUnfolder]: 34146/45959 cut-off events. [2023-08-30 12:53:13,059 INFO L131 PetriNetUnfolder]: For 13491/13491 co-relation queries the response was YES. [2023-08-30 12:53:13,165 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102437 conditions, 45959 events. 34146/45959 cut-off events. For 13491/13491 co-relation queries the response was YES. Maximal size of possible extension queue 2210. Compared 295129 event pairs, 16535 based on Foata normal form. 0/23285 useless extension candidates. Maximal degree in co-relation 72841. Up to 29660 conditions per place. [2023-08-30 12:53:13,321 INFO L137 encePairwiseOnDemand]: 398/403 looper letters, 122 selfloop transitions, 4 changer transitions 0/129 dead transitions. [2023-08-30 12:53:13,321 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 129 transitions, 593 flow [2023-08-30 12:53:13,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 12:53:13,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 12:53:13,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 811 transitions. [2023-08-30 12:53:13,323 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5031017369727047 [2023-08-30 12:53:13,324 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 811 transitions. [2023-08-30 12:53:13,324 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 811 transitions. [2023-08-30 12:53:13,324 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:53:13,324 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 811 transitions. [2023-08-30 12:53:13,326 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 202.75) internal successors, (811), 4 states have internal predecessors, (811), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:53:13,328 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 403.0) internal successors, (2015), 5 states have internal predecessors, (2015), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:53:13,328 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 403.0) internal successors, (2015), 5 states have internal predecessors, (2015), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:53:13,328 INFO L175 Difference]: Start difference. First operand has 59 places, 54 transitions, 165 flow. Second operand 4 states and 811 transitions. [2023-08-30 12:53:13,328 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 129 transitions, 593 flow [2023-08-30 12:53:13,369 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 129 transitions, 592 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 12:53:13,371 INFO L231 Difference]: Finished difference. Result has 64 places, 56 transitions, 192 flow [2023-08-30 12:53:13,371 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=403, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=192, PETRI_PLACES=64, PETRI_TRANSITIONS=56} [2023-08-30 12:53:13,371 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 12 predicate places. [2023-08-30 12:53:13,371 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 56 transitions, 192 flow [2023-08-30 12:53:13,372 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 173.75) internal successors, (695), 4 states have internal predecessors, (695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:53:13,372 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:53:13,372 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:53:13,372 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-08-30 12:53:13,372 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2023-08-30 12:53:13,372 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:53:13,373 INFO L85 PathProgramCache]: Analyzing trace with hash 355734270, now seen corresponding path program 1 times [2023-08-30 12:53:13,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:53:13,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722865932] [2023-08-30 12:53:13,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:53:13,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:53:13,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:53:13,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 12:53:13,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:53:13,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722865932] [2023-08-30 12:53:13,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1722865932] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:53:13,415 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:53:13,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 12:53:13,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449889573] [2023-08-30 12:53:13,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:53:13,417 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 12:53:13,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:53:13,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 12:53:13,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-30 12:53:13,474 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 168 out of 403 [2023-08-30 12:53:13,475 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 56 transitions, 192 flow. Second operand has 5 states, 5 states have (on average 169.4) internal successors, (847), 5 states have internal predecessors, (847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:53:13,475 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:53:13,475 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 168 of 403 [2023-08-30 12:53:13,475 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:53:16,708 INFO L130 PetriNetUnfolder]: 40645/54423 cut-off events. [2023-08-30 12:53:16,708 INFO L131 PetriNetUnfolder]: For 28180/28180 co-relation queries the response was YES. [2023-08-30 12:53:16,853 INFO L83 FinitePrefix]: Finished finitePrefix Result has 130101 conditions, 54423 events. 40645/54423 cut-off events. For 28180/28180 co-relation queries the response was YES. Maximal size of possible extension queue 2793. Compared 349596 event pairs, 20760 based on Foata normal form. 732/31642 useless extension candidates. Maximal degree in co-relation 83741. Up to 37257 conditions per place. [2023-08-30 12:53:17,050 INFO L137 encePairwiseOnDemand]: 396/403 looper letters, 192 selfloop transitions, 8 changer transitions 0/203 dead transitions. [2023-08-30 12:53:17,051 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 203 transitions, 952 flow [2023-08-30 12:53:17,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 12:53:17,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 12:53:17,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1206 transitions. [2023-08-30 12:53:17,054 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4987593052109181 [2023-08-30 12:53:17,054 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1206 transitions. [2023-08-30 12:53:17,054 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1206 transitions. [2023-08-30 12:53:17,055 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:53:17,055 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1206 transitions. [2023-08-30 12:53:17,057 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 201.0) internal successors, (1206), 6 states have internal predecessors, (1206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:53:17,060 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 403.0) internal successors, (2821), 7 states have internal predecessors, (2821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:53:17,060 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 403.0) internal successors, (2821), 7 states have internal predecessors, (2821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:53:17,061 INFO L175 Difference]: Start difference. First operand has 64 places, 56 transitions, 192 flow. Second operand 6 states and 1206 transitions. [2023-08-30 12:53:17,061 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 203 transitions, 952 flow [2023-08-30 12:53:17,193 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 203 transitions, 946 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-30 12:53:17,195 INFO L231 Difference]: Finished difference. Result has 71 places, 62 transitions, 255 flow [2023-08-30 12:53:17,195 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=403, PETRI_DIFFERENCE_MINUEND_FLOW=188, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=255, PETRI_PLACES=71, PETRI_TRANSITIONS=62} [2023-08-30 12:53:17,195 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 19 predicate places. [2023-08-30 12:53:17,196 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 62 transitions, 255 flow [2023-08-30 12:53:17,196 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 169.4) internal successors, (847), 5 states have internal predecessors, (847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:53:17,196 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:53:17,196 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:53:17,196 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-08-30 12:53:17,196 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2023-08-30 12:53:17,197 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:53:17,197 INFO L85 PathProgramCache]: Analyzing trace with hash -1857138362, now seen corresponding path program 1 times [2023-08-30 12:53:17,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:53:17,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261359628] [2023-08-30 12:53:17,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:53:17,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:53:17,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:53:17,248 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 12:53:17,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:53:17,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261359628] [2023-08-30 12:53:17,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [261359628] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 12:53:17,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [645756697] [2023-08-30 12:53:17,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:53:17,250 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 12:53:17,250 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 12:53:17,253 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 12:53:17,263 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-30 12:53:17,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:53:17,319 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 12:53:17,320 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 12:53:17,346 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 12:53:17,346 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 12:53:17,387 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 12:53:17,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [645756697] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 12:53:17,387 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 12:53:17,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 13 [2023-08-30 12:53:17,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129649417] [2023-08-30 12:53:17,388 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 12:53:17,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-30 12:53:17,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:53:17,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-30 12:53:17,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2023-08-30 12:53:17,543 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 403 [2023-08-30 12:53:17,545 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 62 transitions, 255 flow. Second operand has 14 states, 14 states have (on average 168.28571428571428) internal successors, (2356), 14 states have internal predecessors, (2356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:53:17,545 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:53:17,545 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 403 [2023-08-30 12:53:17,545 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:53:31,116 INFO L130 PetriNetUnfolder]: 136579/180619 cut-off events. [2023-08-30 12:53:31,116 INFO L131 PetriNetUnfolder]: For 61908/61908 co-relation queries the response was YES. [2023-08-30 12:53:31,810 INFO L83 FinitePrefix]: Finished finitePrefix Result has 466865 conditions, 180619 events. 136579/180619 cut-off events. For 61908/61908 co-relation queries the response was YES. Maximal size of possible extension queue 10239. Compared 1328290 event pairs, 13155 based on Foata normal form. 4758/113971 useless extension candidates. Maximal degree in co-relation 402913. Up to 26730 conditions per place. [2023-08-30 12:53:32,721 INFO L137 encePairwiseOnDemand]: 394/403 looper letters, 1266 selfloop transitions, 67 changer transitions 0/1336 dead transitions. [2023-08-30 12:53:32,721 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 1336 transitions, 6204 flow [2023-08-30 12:53:32,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2023-08-30 12:53:32,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2023-08-30 12:53:32,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 7514 transitions. [2023-08-30 12:53:32,734 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5039232781168265 [2023-08-30 12:53:32,734 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 7514 transitions. [2023-08-30 12:53:32,734 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 7514 transitions. [2023-08-30 12:53:32,738 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:53:32,739 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 7514 transitions. [2023-08-30 12:53:32,750 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 203.0810810810811) internal successors, (7514), 37 states have internal predecessors, (7514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:53:32,768 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 403.0) internal successors, (15314), 38 states have internal predecessors, (15314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:53:32,771 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 403.0) internal successors, (15314), 38 states have internal predecessors, (15314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:53:32,771 INFO L175 Difference]: Start difference. First operand has 71 places, 62 transitions, 255 flow. Second operand 37 states and 7514 transitions. [2023-08-30 12:53:32,772 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 1336 transitions, 6204 flow [2023-08-30 12:53:36,063 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 1336 transitions, 6182 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-30 12:53:36,068 INFO L231 Difference]: Finished difference. Result has 123 places, 131 transitions, 916 flow [2023-08-30 12:53:36,068 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=403, PETRI_DIFFERENCE_MINUEND_FLOW=245, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=916, PETRI_PLACES=123, PETRI_TRANSITIONS=131} [2023-08-30 12:53:36,069 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 71 predicate places. [2023-08-30 12:53:36,069 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 131 transitions, 916 flow [2023-08-30 12:53:36,070 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 168.28571428571428) internal successors, (2356), 14 states have internal predecessors, (2356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:53:36,070 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:53:36,070 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:53:36,077 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-08-30 12:53:36,274 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-08-30 12:53:36,275 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2023-08-30 12:53:36,275 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:53:36,275 INFO L85 PathProgramCache]: Analyzing trace with hash -813549765, now seen corresponding path program 1 times [2023-08-30 12:53:36,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:53:36,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483740808] [2023-08-30 12:53:36,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:53:36,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:53:36,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:53:36,316 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 12:53:36,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:53:36,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [483740808] [2023-08-30 12:53:36,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [483740808] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:53:36,317 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:53:36,317 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 12:53:36,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10589143] [2023-08-30 12:53:36,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:53:36,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 12:53:36,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:53:36,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 12:53:36,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 12:53:36,338 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 175 out of 403 [2023-08-30 12:53:36,339 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 131 transitions, 916 flow. Second operand has 3 states, 3 states have (on average 177.0) internal successors, (531), 3 states have internal predecessors, (531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:53:36,339 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:53:36,340 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 175 of 403 [2023-08-30 12:53:36,340 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:54:00,612 INFO L130 PetriNetUnfolder]: 213047/280823 cut-off events. [2023-08-30 12:54:00,613 INFO L131 PetriNetUnfolder]: For 773716/773716 co-relation queries the response was YES. [2023-08-30 12:54:02,608 INFO L83 FinitePrefix]: Finished finitePrefix Result has 862941 conditions, 280823 events. 213047/280823 cut-off events. For 773716/773716 co-relation queries the response was YES. Maximal size of possible extension queue 14739. Compared 2057821 event pairs, 101401 based on Foata normal form. 0/170529 useless extension candidates. Maximal degree in co-relation 854661. Up to 180502 conditions per place. [2023-08-30 12:54:03,902 INFO L137 encePairwiseOnDemand]: 396/403 looper letters, 245 selfloop transitions, 2 changer transitions 0/250 dead transitions. [2023-08-30 12:54:03,903 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 250 transitions, 2292 flow [2023-08-30 12:54:03,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 12:54:03,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 12:54:03,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 613 transitions. [2023-08-30 12:54:03,904 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5070306038047974 [2023-08-30 12:54:03,904 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 613 transitions. [2023-08-30 12:54:03,904 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 613 transitions. [2023-08-30 12:54:03,905 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:54:03,905 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 613 transitions. [2023-08-30 12:54:03,906 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 204.33333333333334) internal successors, (613), 3 states have internal predecessors, (613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:54:03,907 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 403.0) internal successors, (1612), 4 states have internal predecessors, (1612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:54:03,907 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 403.0) internal successors, (1612), 4 states have internal predecessors, (1612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:54:03,907 INFO L175 Difference]: Start difference. First operand has 123 places, 131 transitions, 916 flow. Second operand 3 states and 613 transitions. [2023-08-30 12:54:03,908 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 250 transitions, 2292 flow [2023-08-30 12:54:08,341 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 250 transitions, 1904 flow, removed 140 selfloop flow, removed 7 redundant places. [2023-08-30 12:54:08,343 INFO L231 Difference]: Finished difference. Result has 119 places, 132 transitions, 742 flow [2023-08-30 12:54:08,343 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=403, PETRI_DIFFERENCE_MINUEND_FLOW=722, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=742, PETRI_PLACES=119, PETRI_TRANSITIONS=132} [2023-08-30 12:54:08,344 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 67 predicate places. [2023-08-30 12:54:08,344 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 132 transitions, 742 flow [2023-08-30 12:54:08,344 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 177.0) internal successors, (531), 3 states have internal predecessors, (531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:54:08,344 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:54:08,344 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:54:08,344 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-08-30 12:54:08,345 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2023-08-30 12:54:08,345 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:54:08,345 INFO L85 PathProgramCache]: Analyzing trace with hash -1734341464, now seen corresponding path program 1 times [2023-08-30 12:54:08,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:54:08,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051850528] [2023-08-30 12:54:08,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:54:08,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:54:08,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:54:08,389 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 12:54:08,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:54:08,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051850528] [2023-08-30 12:54:08,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1051850528] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 12:54:08,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1664969234] [2023-08-30 12:54:08,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:54:08,390 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 12:54:08,391 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 12:54:08,392 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 12:54:08,409 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-30 12:54:08,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:54:08,471 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-30 12:54:08,472 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 12:54:08,484 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 12:54:08,484 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 12:54:08,509 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 12:54:08,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1664969234] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 12:54:08,510 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 12:54:08,510 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2023-08-30 12:54:08,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762787209] [2023-08-30 12:54:08,510 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 12:54:08,511 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-30 12:54:08,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:54:08,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-30 12:54:08,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2023-08-30 12:54:08,613 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 171 out of 403 [2023-08-30 12:54:08,614 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 132 transitions, 742 flow. Second operand has 9 states, 9 states have (on average 173.0) internal successors, (1557), 9 states have internal predecessors, (1557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:54:08,614 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:54:08,614 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 171 of 403 [2023-08-30 12:54:08,614 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:54:32,796 INFO L130 PetriNetUnfolder]: 204615/269278 cut-off events. [2023-08-30 12:54:32,796 INFO L131 PetriNetUnfolder]: For 332122/332122 co-relation queries the response was YES. [2023-08-30 12:54:34,603 INFO L83 FinitePrefix]: Finished finitePrefix Result has 804092 conditions, 269278 events. 204615/269278 cut-off events. For 332122/332122 co-relation queries the response was YES. Maximal size of possible extension queue 13987. Compared 2062067 event pairs, 1315 based on Foata normal form. 3372/179045 useless extension candidates. Maximal degree in co-relation 801798. Up to 172338 conditions per place. [2023-08-30 12:54:35,918 INFO L137 encePairwiseOnDemand]: 398/403 looper letters, 248 selfloop transitions, 16 changer transitions 0/267 dead transitions. [2023-08-30 12:54:35,918 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 267 transitions, 1668 flow [2023-08-30 12:54:35,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 12:54:35,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 12:54:35,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1214 transitions. [2023-08-30 12:54:35,920 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5020678246484698 [2023-08-30 12:54:35,920 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1214 transitions. [2023-08-30 12:54:35,920 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1214 transitions. [2023-08-30 12:54:35,921 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:54:35,921 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1214 transitions. [2023-08-30 12:54:35,922 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 202.33333333333334) internal successors, (1214), 6 states have internal predecessors, (1214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:54:35,924 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 403.0) internal successors, (2821), 7 states have internal predecessors, (2821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:54:35,925 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 403.0) internal successors, (2821), 7 states have internal predecessors, (2821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:54:35,925 INFO L175 Difference]: Start difference. First operand has 119 places, 132 transitions, 742 flow. Second operand 6 states and 1214 transitions. [2023-08-30 12:54:35,925 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 267 transitions, 1668 flow [2023-08-30 12:55:28,621 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 267 transitions, 1658 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 12:55:28,624 INFO L231 Difference]: Finished difference. Result has 118 places, 127 transitions, 748 flow [2023-08-30 12:55:28,624 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=403, PETRI_DIFFERENCE_MINUEND_FLOW=716, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=748, PETRI_PLACES=118, PETRI_TRANSITIONS=127} [2023-08-30 12:55:28,624 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 66 predicate places. [2023-08-30 12:55:28,624 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 127 transitions, 748 flow [2023-08-30 12:55:28,625 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 173.0) internal successors, (1557), 9 states have internal predecessors, (1557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:55:28,625 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:55:28,625 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:55:28,633 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-08-30 12:55:28,830 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 12:55:28,830 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2023-08-30 12:55:28,831 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:55:28,831 INFO L85 PathProgramCache]: Analyzing trace with hash -137241755, now seen corresponding path program 1 times [2023-08-30 12:55:28,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:55:28,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469837401] [2023-08-30 12:55:28,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:55:28,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:55:28,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:55:28,871 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 12:55:28,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:55:28,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [469837401] [2023-08-30 12:55:28,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [469837401] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 12:55:28,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [801557982] [2023-08-30 12:55:28,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:55:28,872 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 12:55:28,872 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 12:55:28,873 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 12:55:28,877 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-30 12:55:28,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:55:28,943 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-30 12:55:28,944 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 12:55:28,954 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 12:55:28,954 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 12:55:28,967 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 12:55:28,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [801557982] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 12:55:28,967 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 12:55:28,967 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-30 12:55:28,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278294570] [2023-08-30 12:55:28,968 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 12:55:28,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 12:55:28,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:55:28,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 12:55:28,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-30 12:55:29,035 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 174 out of 403 [2023-08-30 12:55:29,036 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 127 transitions, 748 flow. Second operand has 7 states, 7 states have (on average 176.14285714285714) internal successors, (1233), 7 states have internal predecessors, (1233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:55:29,036 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:55:29,036 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 174 of 403 [2023-08-30 12:55:29,036 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:56:10,566 INFO L130 PetriNetUnfolder]: 383600/496854 cut-off events. [2023-08-30 12:56:10,566 INFO L131 PetriNetUnfolder]: For 1177469/1177469 co-relation queries the response was YES. [2023-08-30 12:56:14,059 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1477761 conditions, 496854 events. 383600/496854 cut-off events. For 1177469/1177469 co-relation queries the response was YES. Maximal size of possible extension queue 20244. Compared 3634672 event pairs, 27831 based on Foata normal form. 0/325588 useless extension candidates. Maximal degree in co-relation 1463359. Up to 99197 conditions per place. [2023-08-30 12:56:16,397 INFO L137 encePairwiseOnDemand]: 394/403 looper letters, 666 selfloop transitions, 17 changer transitions 0/686 dead transitions. [2023-08-30 12:56:16,397 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 686 transitions, 5588 flow [2023-08-30 12:56:16,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 12:56:16,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 12:56:16,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1439 transitions. [2023-08-30 12:56:16,398 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.510102800425381 [2023-08-30 12:56:16,398 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1439 transitions. [2023-08-30 12:56:16,399 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1439 transitions. [2023-08-30 12:56:16,399 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:56:16,399 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1439 transitions. [2023-08-30 12:56:16,400 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 205.57142857142858) internal successors, (1439), 7 states have internal predecessors, (1439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:56:16,403 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 403.0) internal successors, (3224), 8 states have internal predecessors, (3224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:56:16,403 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 403.0) internal successors, (3224), 8 states have internal predecessors, (3224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:56:16,403 INFO L175 Difference]: Start difference. First operand has 118 places, 127 transitions, 748 flow. Second operand 7 states and 1439 transitions. [2023-08-30 12:56:16,403 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 686 transitions, 5588 flow [2023-08-30 12:56:20,404 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 686 transitions, 5438 flow, removed 6 selfloop flow, removed 3 redundant places. [2023-08-30 12:56:20,410 INFO L231 Difference]: Finished difference. Result has 124 places, 137 transitions, 825 flow [2023-08-30 12:56:20,410 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=403, PETRI_DIFFERENCE_MINUEND_FLOW=719, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=825, PETRI_PLACES=124, PETRI_TRANSITIONS=137} [2023-08-30 12:56:20,410 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 72 predicate places. [2023-08-30 12:56:20,411 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 137 transitions, 825 flow [2023-08-30 12:56:20,411 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 176.14285714285714) internal successors, (1233), 7 states have internal predecessors, (1233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:56:20,411 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:56:20,411 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:56:20,421 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-08-30 12:56:20,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2023-08-30 12:56:20,616 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2023-08-30 12:56:20,617 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:56:20,617 INFO L85 PathProgramCache]: Analyzing trace with hash -137241879, now seen corresponding path program 1 times [2023-08-30 12:56:20,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:56:20,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133296136] [2023-08-30 12:56:20,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:56:20,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:56:20,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:56:20,642 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 12:56:20,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:56:20,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2133296136] [2023-08-30 12:56:20,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2133296136] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 12:56:20,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1133658862] [2023-08-30 12:56:20,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:56:20,643 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 12:56:20,643 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 12:56:20,644 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 12:56:20,647 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-08-30 12:56:20,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:56:20,718 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-30 12:56:20,719 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 12:56:20,728 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 12:56:20,728 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 12:56:20,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1133658862] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:56:20,729 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 12:56:20,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2023-08-30 12:56:20,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850975709] [2023-08-30 12:56:20,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:56:20,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 12:56:20,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:56:20,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 12:56:20,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-30 12:56:20,758 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 175 out of 403 [2023-08-30 12:56:20,759 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 137 transitions, 825 flow. Second operand has 4 states, 4 states have (on average 177.0) internal successors, (708), 4 states have internal predecessors, (708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:56:20,759 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:56:20,759 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 175 of 403 [2023-08-30 12:56:20,759 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:57:01,690 INFO L130 PetriNetUnfolder]: 332347/435788 cut-off events. [2023-08-30 12:57:01,691 INFO L131 PetriNetUnfolder]: For 1039784/1039784 co-relation queries the response was YES. [2023-08-30 12:57:05,058 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1345341 conditions, 435788 events. 332347/435788 cut-off events. For 1039784/1039784 co-relation queries the response was YES. Maximal size of possible extension queue 17990. Compared 3333581 event pairs, 4716 based on Foata normal form. 32200/346515 useless extension candidates. Maximal degree in co-relation 1332917. Up to 329524 conditions per place. [2023-08-30 12:57:07,212 INFO L137 encePairwiseOnDemand]: 398/403 looper letters, 340 selfloop transitions, 2 changer transitions 0/345 dead transitions. [2023-08-30 12:57:07,212 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 345 transitions, 2765 flow [2023-08-30 12:57:07,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 12:57:07,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 12:57:07,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 807 transitions. [2023-08-30 12:57:07,214 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.500620347394541 [2023-08-30 12:57:07,214 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 807 transitions. [2023-08-30 12:57:07,214 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 807 transitions. [2023-08-30 12:57:07,214 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:57:07,214 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 807 transitions. [2023-08-30 12:57:07,215 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 201.75) internal successors, (807), 4 states have internal predecessors, (807), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:57:07,216 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 403.0) internal successors, (2015), 5 states have internal predecessors, (2015), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:57:07,216 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 403.0) internal successors, (2015), 5 states have internal predecessors, (2015), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:57:07,216 INFO L175 Difference]: Start difference. First operand has 124 places, 137 transitions, 825 flow. Second operand 4 states and 807 transitions. [2023-08-30 12:57:07,216 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 345 transitions, 2765 flow [2023-08-30 12:57:13,530 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 345 transitions, 2757 flow, removed 3 selfloop flow, removed 1 redundant places. [2023-08-30 12:57:13,532 INFO L231 Difference]: Finished difference. Result has 122 places, 127 transitions, 751 flow [2023-08-30 12:57:13,533 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=403, PETRI_DIFFERENCE_MINUEND_FLOW=747, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=751, PETRI_PLACES=122, PETRI_TRANSITIONS=127} [2023-08-30 12:57:13,533 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 70 predicate places. [2023-08-30 12:57:13,533 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 127 transitions, 751 flow [2023-08-30 12:57:13,534 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 177.0) internal successors, (708), 4 states have internal predecessors, (708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:57:13,534 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:57:13,534 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:57:13,544 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-08-30 12:57:13,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 12:57:13,740 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2023-08-30 12:57:13,740 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:57:13,740 INFO L85 PathProgramCache]: Analyzing trace with hash -137245316, now seen corresponding path program 1 times [2023-08-30 12:57:13,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:57:13,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55988252] [2023-08-30 12:57:13,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:57:13,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:57:13,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:57:13,782 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 12:57:13,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:57:13,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [55988252] [2023-08-30 12:57:13,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [55988252] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:57:13,782 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:57:13,782 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 12:57:13,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608979881] [2023-08-30 12:57:13,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:57:13,785 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 12:57:13,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:57:13,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 12:57:13,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 12:57:13,820 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 172 out of 403 [2023-08-30 12:57:13,821 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 127 transitions, 751 flow. Second operand has 4 states, 4 states have (on average 174.0) internal successors, (696), 4 states have internal predecessors, (696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:57:13,821 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:57:13,822 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 172 of 403 [2023-08-30 12:57:13,822 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:57:55,184 INFO L130 PetriNetUnfolder]: 322776/423150 cut-off events. [2023-08-30 12:57:55,184 INFO L131 PetriNetUnfolder]: For 1008726/1008726 co-relation queries the response was YES. [2023-08-30 12:57:59,271 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1301671 conditions, 423150 events. 322776/423150 cut-off events. For 1008726/1008726 co-relation queries the response was YES. Maximal size of possible extension queue 17427. Compared 3134957 event pairs, 151111 based on Foata normal form. 0/307308 useless extension candidates. Maximal degree in co-relation 1289615. Up to 275688 conditions per place. [2023-08-30 12:58:01,628 INFO L137 encePairwiseOnDemand]: 398/403 looper letters, 339 selfloop transitions, 4 changer transitions 0/346 dead transitions. [2023-08-30 12:58:01,628 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 346 transitions, 2767 flow [2023-08-30 12:58:01,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 12:58:01,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 12:58:01,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 794 transitions. [2023-08-30 12:58:01,630 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49255583126550867 [2023-08-30 12:58:01,630 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 794 transitions. [2023-08-30 12:58:01,630 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 794 transitions. [2023-08-30 12:58:01,630 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:58:01,630 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 794 transitions. [2023-08-30 12:58:01,631 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 198.5) internal successors, (794), 4 states have internal predecessors, (794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:58:01,632 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 403.0) internal successors, (2015), 5 states have internal predecessors, (2015), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:58:01,632 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 403.0) internal successors, (2015), 5 states have internal predecessors, (2015), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:58:01,632 INFO L175 Difference]: Start difference. First operand has 122 places, 127 transitions, 751 flow. Second operand 4 states and 794 transitions. [2023-08-30 12:58:01,632 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 346 transitions, 2767 flow [2023-08-30 12:58:10,383 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 346 transitions, 2764 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 12:58:10,385 INFO L231 Difference]: Finished difference. Result has 126 places, 129 transitions, 776 flow [2023-08-30 12:58:10,386 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=403, PETRI_DIFFERENCE_MINUEND_FLOW=748, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=776, PETRI_PLACES=126, PETRI_TRANSITIONS=129} [2023-08-30 12:58:10,386 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 74 predicate places. [2023-08-30 12:58:10,386 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 129 transitions, 776 flow [2023-08-30 12:58:10,386 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 174.0) internal successors, (696), 4 states have internal predecessors, (696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:58:10,387 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:58:10,387 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:58:10,387 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-08-30 12:58:10,387 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2023-08-30 12:58:10,387 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:58:10,387 INFO L85 PathProgramCache]: Analyzing trace with hash -137245317, now seen corresponding path program 1 times [2023-08-30 12:58:10,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:58:10,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824035465] [2023-08-30 12:58:10,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:58:10,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:58:10,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:58:10,414 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 12:58:10,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:58:10,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824035465] [2023-08-30 12:58:10,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [824035465] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:58:10,415 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:58:10,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 12:58:10,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7337221] [2023-08-30 12:58:10,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:58:10,416 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 12:58:10,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:58:10,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 12:58:10,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 12:58:10,450 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 172 out of 403 [2023-08-30 12:58:10,450 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 129 transitions, 776 flow. Second operand has 4 states, 4 states have (on average 174.0) internal successors, (696), 4 states have internal predecessors, (696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:58:10,451 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:58:10,451 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 172 of 403 [2023-08-30 12:58:10,451 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:59:03,738 INFO L130 PetriNetUnfolder]: 377071/493698 cut-off events. [2023-08-30 12:59:03,738 INFO L131 PetriNetUnfolder]: For 1249626/1249626 co-relation queries the response was YES. [2023-08-30 12:59:07,903 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1588872 conditions, 493698 events. 377071/493698 cut-off events. For 1249626/1249626 co-relation queries the response was YES. Maximal size of possible extension queue 21300. Compared 3705554 event pairs, 166521 based on Foata normal form. 3220/387342 useless extension candidates. Maximal degree in co-relation 1574357. Up to 304490 conditions per place. [2023-08-30 12:59:10,196 INFO L137 encePairwiseOnDemand]: 397/403 looper letters, 448 selfloop transitions, 6 changer transitions 0/457 dead transitions. [2023-08-30 12:59:10,196 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 457 transitions, 3692 flow [2023-08-30 12:59:10,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 12:59:10,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 12:59:10,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 998 transitions. [2023-08-30 12:59:10,198 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49528535980148886 [2023-08-30 12:59:10,198 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 998 transitions. [2023-08-30 12:59:10,198 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 998 transitions. [2023-08-30 12:59:10,198 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:59:10,198 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 998 transitions. [2023-08-30 12:59:10,199 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 199.6) internal successors, (998), 5 states have internal predecessors, (998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:59:10,200 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 403.0) internal successors, (2418), 6 states have internal predecessors, (2418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:59:10,200 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 403.0) internal successors, (2418), 6 states have internal predecessors, (2418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:59:10,200 INFO L175 Difference]: Start difference. First operand has 126 places, 129 transitions, 776 flow. Second operand 5 states and 998 transitions. [2023-08-30 12:59:10,200 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 457 transitions, 3692 flow [2023-08-30 12:59:29,946 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 457 transitions, 3685 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-08-30 12:59:29,949 INFO L231 Difference]: Finished difference. Result has 131 places, 132 transitions, 814 flow [2023-08-30 12:59:29,949 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=403, PETRI_DIFFERENCE_MINUEND_FLOW=772, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=814, PETRI_PLACES=131, PETRI_TRANSITIONS=132} [2023-08-30 12:59:29,950 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 79 predicate places. [2023-08-30 12:59:29,950 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 132 transitions, 814 flow [2023-08-30 12:59:29,950 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 174.0) internal successors, (696), 4 states have internal predecessors, (696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:59:29,950 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:59:29,950 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:59:29,950 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-08-30 12:59:29,951 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2023-08-30 12:59:29,951 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:59:29,951 INFO L85 PathProgramCache]: Analyzing trace with hash -137245275, now seen corresponding path program 1 times [2023-08-30 12:59:29,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:59:29,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826357761] [2023-08-30 12:59:29,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:59:29,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:59:29,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:59:29,998 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 12:59:29,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:59:29,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826357761] [2023-08-30 12:59:29,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1826357761] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:59:29,998 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:59:29,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 12:59:29,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340772549] [2023-08-30 12:59:29,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:59:29,999 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 12:59:29,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:59:30,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 12:59:30,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-30 12:59:30,049 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 168 out of 403 [2023-08-30 12:59:30,050 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 132 transitions, 814 flow. Second operand has 5 states, 5 states have (on average 169.6) internal successors, (848), 5 states have internal predecessors, (848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:59:30,050 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:59:30,050 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 168 of 403 [2023-08-30 12:59:30,050 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 13:00:25,897 INFO L130 PetriNetUnfolder]: 402653/525720 cut-off events. [2023-08-30 13:00:25,898 INFO L131 PetriNetUnfolder]: For 1415716/1415716 co-relation queries the response was YES. [2023-08-30 13:00:30,501 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1750685 conditions, 525720 events. 402653/525720 cut-off events. For 1415716/1415716 co-relation queries the response was YES. Maximal size of possible extension queue 22896. Compared 3928240 event pairs, 205046 based on Foata normal form. 3220/430292 useless extension candidates. Maximal degree in co-relation 1734777. Up to 371665 conditions per place. [2023-08-30 13:00:33,140 INFO L137 encePairwiseOnDemand]: 397/403 looper letters, 554 selfloop transitions, 8 changer transitions 0/565 dead transitions. [2023-08-30 13:00:33,140 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 565 transitions, 4601 flow [2023-08-30 13:00:33,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 13:00:33,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 13:00:33,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1175 transitions. [2023-08-30 13:00:33,142 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48593879239040527 [2023-08-30 13:00:33,142 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1175 transitions. [2023-08-30 13:00:33,142 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1175 transitions. [2023-08-30 13:00:33,142 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 13:00:33,142 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1175 transitions. [2023-08-30 13:00:33,144 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 195.83333333333334) internal successors, (1175), 6 states have internal predecessors, (1175), 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 13:00:33,145 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 403.0) internal successors, (2821), 7 states have internal predecessors, (2821), 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 13:00:33,145 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 403.0) internal successors, (2821), 7 states have internal predecessors, (2821), 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 13:00:33,145 INFO L175 Difference]: Start difference. First operand has 131 places, 132 transitions, 814 flow. Second operand 6 states and 1175 transitions. [2023-08-30 13:00:33,145 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 565 transitions, 4601 flow [2023-08-30 13:01:51,875 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 565 transitions, 4591 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-30 13:01:51,878 INFO L231 Difference]: Finished difference. Result has 136 places, 136 transitions, 856 flow [2023-08-30 13:01:51,878 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=403, PETRI_DIFFERENCE_MINUEND_FLOW=806, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=856, PETRI_PLACES=136, PETRI_TRANSITIONS=136} [2023-08-30 13:01:51,878 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 84 predicate places. [2023-08-30 13:01:51,879 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 136 transitions, 856 flow [2023-08-30 13:01:51,879 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 169.6) internal successors, (848), 5 states have internal predecessors, (848), 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 13:01:51,879 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 13:01:51,879 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 13:01:51,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-08-30 13:01:51,879 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2023-08-30 13:01:51,879 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 13:01:51,879 INFO L85 PathProgramCache]: Analyzing trace with hash -254787527, now seen corresponding path program 1 times [2023-08-30 13:01:51,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 13:01:51,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [491272282] [2023-08-30 13:01:51,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 13:01:51,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 13:01:51,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 13:01:51,965 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 13:01:51,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 13:01:51,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [491272282] [2023-08-30 13:01:51,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [491272282] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 13:01:51,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [407905190] [2023-08-30 13:01:51,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 13:01:51,966 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 13:01:51,966 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 13:01:51,973 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 13:01:51,976 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-08-30 13:01:52,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 13:01:52,037 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 13:01:52,038 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 13:01:52,055 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 13:01:52,055 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 13:01:52,091 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 13:01:52,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [407905190] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 13:01:52,092 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 13:01:52,092 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2023-08-30 13:01:52,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35094454] [2023-08-30 13:01:52,092 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 13:01:52,093 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-30 13:01:52,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 13:01:52,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-30 13:01:52,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2023-08-30 13:01:52,208 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 172 out of 403 [2023-08-30 13:01:52,209 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 136 transitions, 856 flow. Second operand has 11 states, 11 states have (on average 174.0) internal successors, (1914), 11 states have internal predecessors, (1914), 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 13:01:52,209 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 13:01:52,209 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 172 of 403 [2023-08-30 13:01:52,209 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand Killed by 15