./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/pthread/stack_longest-2.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/pthread/stack_longest-2.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 5773bc320dd9dee5d943610df8c4ec3040864edddf388dd42a51d37167245e47 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-30 08:24:26,387 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 08:24:26,389 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 08:24:26,436 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 08:24:26,436 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 08:24:26,440 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 08:24:26,442 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 08:24:26,445 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 08:24:26,447 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 08:24:26,452 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 08:24:26,453 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 08:24:26,455 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 08:24:26,456 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 08:24:26,457 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 08:24:26,459 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 08:24:26,464 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 08:24:26,467 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 08:24:26,469 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 08:24:26,471 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 08:24:26,478 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 08:24:26,479 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 08:24:26,480 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 08:24:26,481 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 08:24:26,481 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 08:24:26,488 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 08:24:26,488 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 08:24:26,489 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 08:24:26,490 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 08:24:26,491 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 08:24:26,492 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 08:24:26,492 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 08:24:26,494 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 08:24:26,495 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 08:24:26,496 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 08:24:26,497 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 08:24:26,497 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 08:24:26,497 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 08:24:26,498 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 08:24:26,498 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 08:24:26,499 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 08:24:26,499 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 08:24:26,501 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-08-30 08:24:26,534 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 08:24:26,534 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 08:24:26,536 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 08:24:26,536 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 08:24:26,537 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 08:24:26,537 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 08:24:26,537 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 08:24:26,538 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 08:24:26,538 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 08:24:26,538 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 08:24:26,539 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 08:24:26,539 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 08:24:26,539 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 08:24:26,539 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 08:24:26,540 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 08:24:26,540 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 08:24:26,540 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 08:24:26,540 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 08:24:26,540 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-08-30 08:24:26,541 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 08:24:26,541 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 08:24:26,541 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 08:24:26,541 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 08:24:26,541 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 08:24:26,542 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 08:24:26,542 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 08:24:26,542 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 08:24:26,542 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 08:24:26,542 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 08:24:26,543 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 08:24:26,543 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 08:24:26,543 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 08:24:26,543 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 08:24:26,544 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 08:24:26,544 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 08:24:26,544 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 08:24:26,544 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 08:24:26,544 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5773bc320dd9dee5d943610df8c4ec3040864edddf388dd42a51d37167245e47 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-30 08:24:26,873 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 08:24:26,889 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 08:24:26,892 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 08:24:26,893 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 08:24:26,894 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 08:24:26,895 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/stack_longest-2.i [2023-08-30 08:24:28,138 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 08:24:28,426 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 08:24:28,427 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/stack_longest-2.i [2023-08-30 08:24:28,440 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f3902133b/c4ffd2bc28364f328724bd584ed1cb02/FLAG6fe7fb414 [2023-08-30 08:24:28,455 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f3902133b/c4ffd2bc28364f328724bd584ed1cb02 [2023-08-30 08:24:28,458 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 08:24:28,459 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 08:24:28,460 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 08:24:28,460 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 08:24:28,466 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 08:24:28,467 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 08:24:28" (1/1) ... [2023-08-30 08:24:28,468 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@34707fd8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:24:28, skipping insertion in model container [2023-08-30 08:24:28,468 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 08:24:28" (1/1) ... [2023-08-30 08:24:28,473 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 08:24:28,532 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 08:24:28,983 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/stack_longest-2.i[41530,41543] [2023-08-30 08:24:29,016 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 08:24:29,027 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 08:24:29,071 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/stack_longest-2.i[41530,41543] [2023-08-30 08:24:29,091 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 08:24:29,184 INFO L208 MainTranslator]: Completed translation [2023-08-30 08:24:29,185 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:24:29 WrapperNode [2023-08-30 08:24:29,185 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 08:24:29,186 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 08:24:29,186 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 08:24:29,186 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 08:24:29,194 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:24:29" (1/1) ... [2023-08-30 08:24:29,221 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:24:29" (1/1) ... [2023-08-30 08:24:29,252 INFO L138 Inliner]: procedures = 277, calls = 38, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 157 [2023-08-30 08:24:29,253 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 08:24:29,253 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 08:24:29,254 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 08:24:29,254 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 08:24:29,263 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:24:29" (1/1) ... [2023-08-30 08:24:29,264 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:24:29" (1/1) ... [2023-08-30 08:24:29,271 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:24:29" (1/1) ... [2023-08-30 08:24:29,271 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:24:29" (1/1) ... [2023-08-30 08:24:29,282 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:24:29" (1/1) ... [2023-08-30 08:24:29,293 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:24:29" (1/1) ... [2023-08-30 08:24:29,296 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:24:29" (1/1) ... [2023-08-30 08:24:29,301 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:24:29" (1/1) ... [2023-08-30 08:24:29,303 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 08:24:29,307 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 08:24:29,308 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 08:24:29,308 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 08:24:29,309 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:24:29" (1/1) ... [2023-08-30 08:24:29,314 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 08:24:29,325 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 08:24:29,337 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 08:24:29,349 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 08:24:29,376 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2023-08-30 08:24:29,376 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2023-08-30 08:24:29,376 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2023-08-30 08:24:29,380 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2023-08-30 08:24:29,380 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 08:24:29,380 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 08:24:29,380 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 08:24:29,380 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 08:24:29,380 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-30 08:24:29,380 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 08:24:29,381 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 08:24:29,381 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 08:24:29,381 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 08:24:29,382 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 08:24:29,521 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 08:24:29,523 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 08:24:29,771 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 08:24:29,778 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 08:24:29,787 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-08-30 08:24:29,790 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 08:24:29 BoogieIcfgContainer [2023-08-30 08:24:29,790 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 08:24:29,792 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 08:24:29,792 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 08:24:29,795 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 08:24:29,797 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 08:24:28" (1/3) ... [2023-08-30 08:24:29,798 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@738a0d31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 08:24:29, skipping insertion in model container [2023-08-30 08:24:29,798 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:24:29" (2/3) ... [2023-08-30 08:24:29,798 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@738a0d31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 08:24:29, skipping insertion in model container [2023-08-30 08:24:29,799 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 08:24:29" (3/3) ... [2023-08-30 08:24:29,800 INFO L112 eAbstractionObserver]: Analyzing ICFG stack_longest-2.i [2023-08-30 08:24:29,807 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 08:24:29,815 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 08:24:29,816 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2023-08-30 08:24:29,816 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 08:24:29,903 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-30 08:24:29,939 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 162 places, 165 transitions, 346 flow [2023-08-30 08:24:30,006 INFO L130 PetriNetUnfolder]: 10/163 cut-off events. [2023-08-30 08:24:30,007 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 08:24:30,017 INFO L83 FinitePrefix]: Finished finitePrefix Result has 172 conditions, 163 events. 10/163 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 416 event pairs, 0 based on Foata normal form. 0/145 useless extension candidates. Maximal degree in co-relation 125. Up to 3 conditions per place. [2023-08-30 08:24:30,017 INFO L82 GeneralOperation]: Start removeDead. Operand has 162 places, 165 transitions, 346 flow [2023-08-30 08:24:30,022 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 151 places, 154 transitions, 317 flow [2023-08-30 08:24:30,025 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 08:24:30,033 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 151 places, 154 transitions, 317 flow [2023-08-30 08:24:30,036 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 151 places, 154 transitions, 317 flow [2023-08-30 08:24:30,036 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 151 places, 154 transitions, 317 flow [2023-08-30 08:24:30,072 INFO L130 PetriNetUnfolder]: 10/154 cut-off events. [2023-08-30 08:24:30,073 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 08:24:30,074 INFO L83 FinitePrefix]: Finished finitePrefix Result has 162 conditions, 154 events. 10/154 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 352 event pairs, 0 based on Foata normal form. 0/136 useless extension candidates. Maximal degree in co-relation 125. Up to 3 conditions per place. [2023-08-30 08:24:30,078 INFO L119 LiptonReduction]: Number of co-enabled transitions 8200 [2023-08-30 08:24:33,428 INFO L134 LiptonReduction]: Checked pairs total: 12122 [2023-08-30 08:24:33,428 INFO L136 LiptonReduction]: Total number of compositions: 141 [2023-08-30 08:24:33,441 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 08:24:33,446 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;@75cc46a5, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 08:24:33,447 INFO L358 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2023-08-30 08:24:33,452 INFO L130 PetriNetUnfolder]: 1/19 cut-off events. [2023-08-30 08:24:33,452 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 08:24:33,452 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:24:33,453 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:24:33,453 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-30 08:24:33,457 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:24:33,458 INFO L85 PathProgramCache]: Analyzing trace with hash -1379937117, now seen corresponding path program 1 times [2023-08-30 08:24:33,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:24:33,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975285394] [2023-08-30 08:24:33,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:24:33,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:24:33,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:24:33,741 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 08:24:33,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:24:33,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [975285394] [2023-08-30 08:24:33,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [975285394] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:24:33,743 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 08:24:33,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 08:24:33,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127325377] [2023-08-30 08:24:33,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:24:33,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 08:24:33,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:24:33,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 08:24:33,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 08:24:33,800 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 147 out of 306 [2023-08-30 08:24:33,802 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 40 transitions, 89 flow. Second operand has 3 states, 3 states have (on average 149.33333333333334) internal successors, (448), 3 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:33,803 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:24:33,803 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 147 of 306 [2023-08-30 08:24:33,804 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:24:34,070 INFO L130 PetriNetUnfolder]: 1105/1816 cut-off events. [2023-08-30 08:24:34,070 INFO L131 PetriNetUnfolder]: For 70/70 co-relation queries the response was YES. [2023-08-30 08:24:34,074 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3658 conditions, 1816 events. 1105/1816 cut-off events. For 70/70 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 8343 event pairs, 432 based on Foata normal form. 30/1275 useless extension candidates. Maximal degree in co-relation 3420. Up to 1222 conditions per place. [2023-08-30 08:24:34,083 INFO L137 encePairwiseOnDemand]: 299/306 looper letters, 58 selfloop transitions, 3 changer transitions 0/63 dead transitions. [2023-08-30 08:24:34,084 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 63 transitions, 263 flow [2023-08-30 08:24:34,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 08:24:34,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 08:24:34,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 506 transitions. [2023-08-30 08:24:34,097 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.55119825708061 [2023-08-30 08:24:34,098 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 506 transitions. [2023-08-30 08:24:34,098 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 506 transitions. [2023-08-30 08:24:34,100 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:24:34,102 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 506 transitions. [2023-08-30 08:24:34,106 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 168.66666666666666) internal successors, (506), 3 states have internal predecessors, (506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:34,110 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 306.0) internal successors, (1224), 4 states have internal predecessors, (1224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:34,111 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 306.0) internal successors, (1224), 4 states have internal predecessors, (1224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:34,113 INFO L175 Difference]: Start difference. First operand has 42 places, 40 transitions, 89 flow. Second operand 3 states and 506 transitions. [2023-08-30 08:24:34,113 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 63 transitions, 263 flow [2023-08-30 08:24:34,116 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 63 transitions, 255 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-30 08:24:34,117 INFO L231 Difference]: Finished difference. Result has 42 places, 41 transitions, 105 flow [2023-08-30 08:24:34,119 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=105, PETRI_PLACES=42, PETRI_TRANSITIONS=41} [2023-08-30 08:24:34,122 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 0 predicate places. [2023-08-30 08:24:34,122 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 41 transitions, 105 flow [2023-08-30 08:24:34,122 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 149.33333333333334) internal successors, (448), 3 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:34,123 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:24:34,123 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:24:34,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 08:24:34,123 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-30 08:24:34,124 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:24:34,124 INFO L85 PathProgramCache]: Analyzing trace with hash -595359307, now seen corresponding path program 1 times [2023-08-30 08:24:34,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:24:34,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189349930] [2023-08-30 08:24:34,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:24:34,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:24:34,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:24:34,214 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 08:24:34,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:24:34,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189349930] [2023-08-30 08:24:34,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [189349930] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:24:34,215 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 08:24:34,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 08:24:34,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790109397] [2023-08-30 08:24:34,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:24:34,217 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 08:24:34,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:24:34,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 08:24:34,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 08:24:34,228 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 150 out of 306 [2023-08-30 08:24:34,229 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 41 transitions, 105 flow. Second operand has 3 states, 3 states have (on average 152.33333333333334) internal successors, (457), 3 states have internal predecessors, (457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:34,230 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:24:34,230 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 150 of 306 [2023-08-30 08:24:34,230 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:24:34,518 INFO L130 PetriNetUnfolder]: 1668/2831 cut-off events. [2023-08-30 08:24:34,518 INFO L131 PetriNetUnfolder]: For 164/164 co-relation queries the response was YES. [2023-08-30 08:24:34,522 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5930 conditions, 2831 events. 1668/2831 cut-off events. For 164/164 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 14796 event pairs, 835 based on Foata normal form. 0/2211 useless extension candidates. Maximal degree in co-relation 5606. Up to 1755 conditions per place. [2023-08-30 08:24:34,533 INFO L137 encePairwiseOnDemand]: 301/306 looper letters, 68 selfloop transitions, 2 changer transitions 0/72 dead transitions. [2023-08-30 08:24:34,533 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 72 transitions, 324 flow [2023-08-30 08:24:34,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 08:24:34,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 08:24:34,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 521 transitions. [2023-08-30 08:24:34,536 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5675381263616558 [2023-08-30 08:24:34,537 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 521 transitions. [2023-08-30 08:24:34,537 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 521 transitions. [2023-08-30 08:24:34,537 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:24:34,537 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 521 transitions. [2023-08-30 08:24:34,539 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 173.66666666666666) internal successors, (521), 3 states have internal predecessors, (521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:34,555 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 306.0) internal successors, (1224), 4 states have internal predecessors, (1224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:34,555 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 306.0) internal successors, (1224), 4 states have internal predecessors, (1224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:34,556 INFO L175 Difference]: Start difference. First operand has 42 places, 41 transitions, 105 flow. Second operand 3 states and 521 transitions. [2023-08-30 08:24:34,556 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 72 transitions, 324 flow [2023-08-30 08:24:34,558 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 72 transitions, 319 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 08:24:34,559 INFO L231 Difference]: Finished difference. Result has 44 places, 42 transitions, 118 flow [2023-08-30 08:24:34,560 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=118, PETRI_PLACES=44, PETRI_TRANSITIONS=42} [2023-08-30 08:24:34,560 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 2 predicate places. [2023-08-30 08:24:34,561 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 42 transitions, 118 flow [2023-08-30 08:24:34,561 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 152.33333333333334) internal successors, (457), 3 states have internal predecessors, (457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:34,561 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:24:34,561 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:24:34,562 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 08:24:34,562 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-30 08:24:34,562 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:24:34,562 INFO L85 PathProgramCache]: Analyzing trace with hash 510376855, now seen corresponding path program 1 times [2023-08-30 08:24:34,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:24:34,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908331159] [2023-08-30 08:24:34,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:24:34,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:24:34,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:24:34,639 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 08:24:34,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:24:34,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908331159] [2023-08-30 08:24:34,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [908331159] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:24:34,641 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 08:24:34,641 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 08:24:34,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242219672] [2023-08-30 08:24:34,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:24:34,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 08:24:34,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:24:34,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 08:24:34,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 08:24:34,655 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 150 out of 306 [2023-08-30 08:24:34,656 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 42 transitions, 118 flow. Second operand has 3 states, 3 states have (on average 153.66666666666666) internal successors, (461), 3 states have internal predecessors, (461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:34,656 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:24:34,656 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 150 of 306 [2023-08-30 08:24:34,656 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:24:34,992 INFO L130 PetriNetUnfolder]: 2077/3384 cut-off events. [2023-08-30 08:24:34,993 INFO L131 PetriNetUnfolder]: For 471/471 co-relation queries the response was YES. [2023-08-30 08:24:34,997 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7853 conditions, 3384 events. 2077/3384 cut-off events. For 471/471 co-relation queries the response was YES. Maximal size of possible extension queue 174. Compared 18449 event pairs, 1125 based on Foata normal form. 0/2732 useless extension candidates. Maximal degree in co-relation 6986. Up to 2745 conditions per place. [2023-08-30 08:24:35,010 INFO L137 encePairwiseOnDemand]: 301/306 looper letters, 66 selfloop transitions, 2 changer transitions 0/70 dead transitions. [2023-08-30 08:24:35,011 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 70 transitions, 332 flow [2023-08-30 08:24:35,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 08:24:35,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 08:24:35,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 518 transitions. [2023-08-30 08:24:35,013 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5642701525054467 [2023-08-30 08:24:35,013 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 518 transitions. [2023-08-30 08:24:35,013 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 518 transitions. [2023-08-30 08:24:35,013 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:24:35,014 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 518 transitions. [2023-08-30 08:24:35,015 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 172.66666666666666) internal successors, (518), 3 states have internal predecessors, (518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:35,016 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 306.0) internal successors, (1224), 4 states have internal predecessors, (1224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:35,017 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 306.0) internal successors, (1224), 4 states have internal predecessors, (1224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:35,017 INFO L175 Difference]: Start difference. First operand has 44 places, 42 transitions, 118 flow. Second operand 3 states and 518 transitions. [2023-08-30 08:24:35,018 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 70 transitions, 332 flow [2023-08-30 08:24:35,020 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 70 transitions, 328 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 08:24:35,021 INFO L231 Difference]: Finished difference. Result has 46 places, 43 transitions, 132 flow [2023-08-30 08:24:35,021 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=132, PETRI_PLACES=46, PETRI_TRANSITIONS=43} [2023-08-30 08:24:35,023 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 4 predicate places. [2023-08-30 08:24:35,023 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 43 transitions, 132 flow [2023-08-30 08:24:35,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 153.66666666666666) internal successors, (461), 3 states have internal predecessors, (461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:35,024 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:24:35,024 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:24:35,024 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-30 08:24:35,024 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-30 08:24:35,025 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:24:35,025 INFO L85 PathProgramCache]: Analyzing trace with hash 2141768095, now seen corresponding path program 1 times [2023-08-30 08:24:35,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:24:35,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1556057708] [2023-08-30 08:24:35,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:24:35,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:24:35,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:24:35,116 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 08:24:35,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:24:35,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1556057708] [2023-08-30 08:24:35,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1556057708] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:24:35,118 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 08:24:35,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 08:24:35,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578857718] [2023-08-30 08:24:35,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:24:35,119 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 08:24:35,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:24:35,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 08:24:35,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 08:24:35,129 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 150 out of 306 [2023-08-30 08:24:35,130 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 43 transitions, 132 flow. Second operand has 3 states, 3 states have (on average 153.0) internal successors, (459), 3 states have internal predecessors, (459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:35,131 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:24:35,131 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 150 of 306 [2023-08-30 08:24:35,131 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:24:35,444 INFO L130 PetriNetUnfolder]: 1793/3144 cut-off events. [2023-08-30 08:24:35,445 INFO L131 PetriNetUnfolder]: For 532/532 co-relation queries the response was YES. [2023-08-30 08:24:35,449 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7202 conditions, 3144 events. 1793/3144 cut-off events. For 532/532 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 17827 event pairs, 95 based on Foata normal form. 0/2762 useless extension candidates. Maximal degree in co-relation 6840. Up to 2734 conditions per place. [2023-08-30 08:24:35,463 INFO L137 encePairwiseOnDemand]: 304/306 looper letters, 59 selfloop transitions, 1 changer transitions 0/62 dead transitions. [2023-08-30 08:24:35,463 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 62 transitions, 313 flow [2023-08-30 08:24:35,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 08:24:35,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 08:24:35,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 506 transitions. [2023-08-30 08:24:35,467 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.55119825708061 [2023-08-30 08:24:35,467 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 506 transitions. [2023-08-30 08:24:35,470 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 506 transitions. [2023-08-30 08:24:35,471 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:24:35,471 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 506 transitions. [2023-08-30 08:24:35,472 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 168.66666666666666) internal successors, (506), 3 states have internal predecessors, (506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:35,474 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 306.0) internal successors, (1224), 4 states have internal predecessors, (1224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:35,475 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 306.0) internal successors, (1224), 4 states have internal predecessors, (1224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:35,475 INFO L175 Difference]: Start difference. First operand has 46 places, 43 transitions, 132 flow. Second operand 3 states and 506 transitions. [2023-08-30 08:24:35,475 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 62 transitions, 313 flow [2023-08-30 08:24:35,477 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 62 transitions, 309 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 08:24:35,479 INFO L231 Difference]: Finished difference. Result has 46 places, 42 transitions, 128 flow [2023-08-30 08:24:35,479 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=128, PETRI_PLACES=46, PETRI_TRANSITIONS=42} [2023-08-30 08:24:35,480 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 4 predicate places. [2023-08-30 08:24:35,481 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 42 transitions, 128 flow [2023-08-30 08:24:35,481 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 153.0) internal successors, (459), 3 states have internal predecessors, (459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:35,481 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:24:35,481 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:24:35,481 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-30 08:24:35,482 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-30 08:24:35,482 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:24:35,482 INFO L85 PathProgramCache]: Analyzing trace with hash 2141768193, now seen corresponding path program 1 times [2023-08-30 08:24:35,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:24:35,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1396673399] [2023-08-30 08:24:35,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:24:35,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:24:35,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:24:35,522 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 08:24:35,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:24:35,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1396673399] [2023-08-30 08:24:35,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1396673399] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:24:35,523 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 08:24:35,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 08:24:35,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349862799] [2023-08-30 08:24:35,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:24:35,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 08:24:35,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:24:35,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 08:24:35,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 08:24:35,531 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 149 out of 306 [2023-08-30 08:24:35,532 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 42 transitions, 128 flow. Second operand has 3 states, 3 states have (on average 152.0) internal successors, (456), 3 states have internal predecessors, (456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:35,532 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:24:35,532 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 149 of 306 [2023-08-30 08:24:35,532 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:24:35,822 INFO L130 PetriNetUnfolder]: 1680/2953 cut-off events. [2023-08-30 08:24:35,823 INFO L131 PetriNetUnfolder]: For 583/583 co-relation queries the response was YES. [2023-08-30 08:24:35,827 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6690 conditions, 2953 events. 1680/2953 cut-off events. For 583/583 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 16501 event pairs, 305 based on Foata normal form. 0/2659 useless extension candidates. Maximal degree in co-relation 6342. Up to 2083 conditions per place. [2023-08-30 08:24:35,839 INFO L137 encePairwiseOnDemand]: 302/306 looper letters, 56 selfloop transitions, 4 changer transitions 0/62 dead transitions. [2023-08-30 08:24:35,839 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 62 transitions, 309 flow [2023-08-30 08:24:35,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 08:24:35,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 08:24:35,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 503 transitions. [2023-08-30 08:24:35,841 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5479302832244008 [2023-08-30 08:24:35,841 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 503 transitions. [2023-08-30 08:24:35,841 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 503 transitions. [2023-08-30 08:24:35,842 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:24:35,842 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 503 transitions. [2023-08-30 08:24:35,843 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 167.66666666666666) internal successors, (503), 3 states have internal predecessors, (503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:35,844 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 306.0) internal successors, (1224), 4 states have internal predecessors, (1224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:35,845 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 306.0) internal successors, (1224), 4 states have internal predecessors, (1224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:35,845 INFO L175 Difference]: Start difference. First operand has 46 places, 42 transitions, 128 flow. Second operand 3 states and 503 transitions. [2023-08-30 08:24:35,845 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 62 transitions, 309 flow [2023-08-30 08:24:35,847 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 62 transitions, 308 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 08:24:35,848 INFO L231 Difference]: Finished difference. Result has 47 places, 42 transitions, 139 flow [2023-08-30 08:24:35,849 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=123, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=139, PETRI_PLACES=47, PETRI_TRANSITIONS=42} [2023-08-30 08:24:35,851 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 5 predicate places. [2023-08-30 08:24:35,851 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 42 transitions, 139 flow [2023-08-30 08:24:35,851 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 152.0) internal successors, (456), 3 states have internal predecessors, (456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:35,852 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:24:35,852 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:24:35,852 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-30 08:24:35,852 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-30 08:24:35,852 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:24:35,853 INFO L85 PathProgramCache]: Analyzing trace with hash 1231784516, now seen corresponding path program 1 times [2023-08-30 08:24:35,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:24:35,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1431319387] [2023-08-30 08:24:35,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:24:35,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:24:35,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:24:35,924 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 08:24:35,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:24:35,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1431319387] [2023-08-30 08:24:35,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1431319387] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 08:24:35,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1353668397] [2023-08-30 08:24:35,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:24:35,926 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 08:24:35,926 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 08:24:35,929 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 08:24:35,955 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 08:24:36,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:24:36,035 INFO L263 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 08:24:36,039 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 08:24:36,115 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 08:24:36,120 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 08:24:36,171 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 08:24:36,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1353668397] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 08:24:36,172 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 08:24:36,172 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2023-08-30 08:24:36,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919309047] [2023-08-30 08:24:36,173 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 08:24:36,173 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-30 08:24:36,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:24:36,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-30 08:24:36,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-08-30 08:24:36,252 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 306 [2023-08-30 08:24:36,254 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 42 transitions, 139 flow. Second operand has 10 states, 10 states have (on average 144.7) internal successors, (1447), 10 states have internal predecessors, (1447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:36,254 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:24:36,254 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 306 [2023-08-30 08:24:36,255 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:24:37,043 INFO L130 PetriNetUnfolder]: 4162/6891 cut-off events. [2023-08-30 08:24:37,043 INFO L131 PetriNetUnfolder]: For 3792/3792 co-relation queries the response was YES. [2023-08-30 08:24:37,056 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17356 conditions, 6891 events. 4162/6891 cut-off events. For 3792/3792 co-relation queries the response was YES. Maximal size of possible extension queue 205. Compared 39087 event pairs, 673 based on Foata normal form. 146/6433 useless extension candidates. Maximal degree in co-relation 16768. Up to 2039 conditions per place. [2023-08-30 08:24:37,086 INFO L137 encePairwiseOnDemand]: 294/306 looper letters, 212 selfloop transitions, 40 changer transitions 2/255 dead transitions. [2023-08-30 08:24:37,086 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 255 transitions, 1399 flow [2023-08-30 08:24:37,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-30 08:24:37,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-30 08:24:37,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2217 transitions. [2023-08-30 08:24:37,092 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5175070028011205 [2023-08-30 08:24:37,092 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2217 transitions. [2023-08-30 08:24:37,093 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2217 transitions. [2023-08-30 08:24:37,094 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:24:37,094 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2217 transitions. [2023-08-30 08:24:37,099 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 158.35714285714286) internal successors, (2217), 14 states have internal predecessors, (2217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:37,106 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 306.0) internal successors, (4590), 15 states have internal predecessors, (4590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:37,107 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 306.0) internal successors, (4590), 15 states have internal predecessors, (4590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:37,108 INFO L175 Difference]: Start difference. First operand has 47 places, 42 transitions, 139 flow. Second operand 14 states and 2217 transitions. [2023-08-30 08:24:37,108 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 255 transitions, 1399 flow [2023-08-30 08:24:37,122 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 255 transitions, 1353 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 08:24:37,125 INFO L231 Difference]: Finished difference. Result has 68 places, 81 transitions, 446 flow [2023-08-30 08:24:37,125 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=135, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=446, PETRI_PLACES=68, PETRI_TRANSITIONS=81} [2023-08-30 08:24:37,126 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 26 predicate places. [2023-08-30 08:24:37,126 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 81 transitions, 446 flow [2023-08-30 08:24:37,127 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 144.7) internal successors, (1447), 10 states have internal predecessors, (1447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:37,127 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:24:37,127 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:24:37,136 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 08:24:37,333 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-08-30 08:24:37,334 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-30 08:24:37,334 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:24:37,334 INFO L85 PathProgramCache]: Analyzing trace with hash 1723074253, now seen corresponding path program 1 times [2023-08-30 08:24:37,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:24:37,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197561182] [2023-08-30 08:24:37,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:24:37,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:24:37,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:24:37,432 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 08:24:37,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:24:37,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197561182] [2023-08-30 08:24:37,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1197561182] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:24:37,433 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 08:24:37,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 08:24:37,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776688421] [2023-08-30 08:24:37,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:24:37,434 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 08:24:37,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:24:37,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 08:24:37,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 08:24:37,448 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 306 [2023-08-30 08:24:37,450 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 81 transitions, 446 flow. Second operand has 3 states, 3 states have (on average 153.33333333333334) internal successors, (460), 3 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:37,450 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:24:37,450 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 306 [2023-08-30 08:24:37,450 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:24:37,771 INFO L130 PetriNetUnfolder]: 1910/3279 cut-off events. [2023-08-30 08:24:37,772 INFO L131 PetriNetUnfolder]: For 3410/3410 co-relation queries the response was YES. [2023-08-30 08:24:37,781 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10001 conditions, 3279 events. 1910/3279 cut-off events. For 3410/3410 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 17380 event pairs, 419 based on Foata normal form. 202/3241 useless extension candidates. Maximal degree in co-relation 9336. Up to 2259 conditions per place. [2023-08-30 08:24:37,793 INFO L137 encePairwiseOnDemand]: 301/306 looper letters, 66 selfloop transitions, 6 changer transitions 0/76 dead transitions. [2023-08-30 08:24:37,793 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 76 transitions, 524 flow [2023-08-30 08:24:37,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 08:24:37,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 08:24:37,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 496 transitions. [2023-08-30 08:24:37,795 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5403050108932462 [2023-08-30 08:24:37,796 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 496 transitions. [2023-08-30 08:24:37,796 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 496 transitions. [2023-08-30 08:24:37,796 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:24:37,796 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 496 transitions. [2023-08-30 08:24:37,798 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 165.33333333333334) internal successors, (496), 3 states have internal predecessors, (496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:37,800 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 306.0) internal successors, (1224), 4 states have internal predecessors, (1224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:37,800 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 306.0) internal successors, (1224), 4 states have internal predecessors, (1224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:37,800 INFO L175 Difference]: Start difference. First operand has 68 places, 81 transitions, 446 flow. Second operand 3 states and 496 transitions. [2023-08-30 08:24:37,800 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 76 transitions, 524 flow [2023-08-30 08:24:37,815 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 76 transitions, 491 flow, removed 10 selfloop flow, removed 6 redundant places. [2023-08-30 08:24:37,817 INFO L231 Difference]: Finished difference. Result has 59 places, 61 transitions, 299 flow [2023-08-30 08:24:37,818 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=287, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=299, PETRI_PLACES=59, PETRI_TRANSITIONS=61} [2023-08-30 08:24:37,818 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 17 predicate places. [2023-08-30 08:24:37,818 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 61 transitions, 299 flow [2023-08-30 08:24:37,819 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 153.33333333333334) internal successors, (460), 3 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:37,819 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:24:37,819 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:24:37,819 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-30 08:24:37,819 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-30 08:24:37,820 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:24:37,820 INFO L85 PathProgramCache]: Analyzing trace with hash -470870337, now seen corresponding path program 1 times [2023-08-30 08:24:37,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:24:37,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463190570] [2023-08-30 08:24:37,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:24:37,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:24:37,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:24:37,926 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 08:24:37,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:24:37,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1463190570] [2023-08-30 08:24:37,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1463190570] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 08:24:37,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [923280717] [2023-08-30 08:24:37,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:24:37,928 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 08:24:37,928 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 08:24:37,929 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 08:24:37,939 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 08:24:38,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:24:38,033 INFO L263 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-30 08:24:38,035 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 08:24:38,074 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 08:24:38,075 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 08:24:38,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [923280717] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:24:38,076 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 08:24:38,076 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-30 08:24:38,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808136669] [2023-08-30 08:24:38,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:24:38,077 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 08:24:38,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:24:38,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 08:24:38,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-08-30 08:24:38,134 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 306 [2023-08-30 08:24:38,135 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 61 transitions, 299 flow. Second operand has 5 states, 5 states have (on average 144.2) internal successors, (721), 5 states have internal predecessors, (721), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:38,135 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:24:38,135 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 306 [2023-08-30 08:24:38,135 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:24:38,468 INFO L130 PetriNetUnfolder]: 1801/3184 cut-off events. [2023-08-30 08:24:38,468 INFO L131 PetriNetUnfolder]: For 3013/3013 co-relation queries the response was YES. [2023-08-30 08:24:38,476 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9512 conditions, 3184 events. 1801/3184 cut-off events. For 3013/3013 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 15734 event pairs, 527 based on Foata normal form. 250/3196 useless extension candidates. Maximal degree in co-relation 8882. Up to 1653 conditions per place. [2023-08-30 08:24:38,489 INFO L137 encePairwiseOnDemand]: 295/306 looper letters, 92 selfloop transitions, 16 changer transitions 0/109 dead transitions. [2023-08-30 08:24:38,489 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 109 transitions, 723 flow [2023-08-30 08:24:38,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 08:24:38,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 08:24:38,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 931 transitions. [2023-08-30 08:24:38,492 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5070806100217865 [2023-08-30 08:24:38,493 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 931 transitions. [2023-08-30 08:24:38,493 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 931 transitions. [2023-08-30 08:24:38,493 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:24:38,493 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 931 transitions. [2023-08-30 08:24:38,495 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 155.16666666666666) internal successors, (931), 6 states have internal predecessors, (931), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:38,498 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 306.0) internal successors, (2142), 7 states have internal predecessors, (2142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:38,498 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 306.0) internal successors, (2142), 7 states have internal predecessors, (2142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:38,498 INFO L175 Difference]: Start difference. First operand has 59 places, 61 transitions, 299 flow. Second operand 6 states and 931 transitions. [2023-08-30 08:24:38,499 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 109 transitions, 723 flow [2023-08-30 08:24:38,504 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 109 transitions, 711 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 08:24:38,506 INFO L231 Difference]: Finished difference. Result has 65 places, 64 transitions, 403 flow [2023-08-30 08:24:38,506 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=257, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=403, PETRI_PLACES=65, PETRI_TRANSITIONS=64} [2023-08-30 08:24:38,508 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 23 predicate places. [2023-08-30 08:24:38,508 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 64 transitions, 403 flow [2023-08-30 08:24:38,509 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 144.2) internal successors, (721), 5 states have internal predecessors, (721), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:38,509 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:24:38,509 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2023-08-30 08:24:38,515 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-08-30 08:24:38,715 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,SelfDestructingSolverStorable7 [2023-08-30 08:24:38,716 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-30 08:24:38,716 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:24:38,716 INFO L85 PathProgramCache]: Analyzing trace with hash -334382920, now seen corresponding path program 1 times [2023-08-30 08:24:38,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:24:38,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184173094] [2023-08-30 08:24:38,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:24:38,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:24:38,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:24:38,770 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 08:24:38,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:24:38,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184173094] [2023-08-30 08:24:38,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1184173094] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:24:38,771 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 08:24:38,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 08:24:38,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226290965] [2023-08-30 08:24:38,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:24:38,772 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 08:24:38,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:24:38,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 08:24:38,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 08:24:38,779 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 150 out of 306 [2023-08-30 08:24:38,780 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 64 transitions, 403 flow. Second operand has 3 states, 3 states have (on average 156.33333333333334) internal successors, (469), 3 states have internal predecessors, (469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:38,780 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:24:38,781 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 150 of 306 [2023-08-30 08:24:38,781 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:24:39,036 INFO L130 PetriNetUnfolder]: 1584/2841 cut-off events. [2023-08-30 08:24:39,037 INFO L131 PetriNetUnfolder]: For 3626/3630 co-relation queries the response was YES. [2023-08-30 08:24:39,044 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8857 conditions, 2841 events. 1584/2841 cut-off events. For 3626/3630 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 14188 event pairs, 515 based on Foata normal form. 4/2725 useless extension candidates. Maximal degree in co-relation 8360. Up to 2771 conditions per place. [2023-08-30 08:24:39,054 INFO L137 encePairwiseOnDemand]: 304/306 looper letters, 66 selfloop transitions, 1 changer transitions 0/72 dead transitions. [2023-08-30 08:24:39,054 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 72 transitions, 574 flow [2023-08-30 08:24:39,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 08:24:39,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 08:24:39,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 491 transitions. [2023-08-30 08:24:39,056 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5348583877995643 [2023-08-30 08:24:39,056 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 491 transitions. [2023-08-30 08:24:39,056 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 491 transitions. [2023-08-30 08:24:39,057 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:24:39,057 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 491 transitions. [2023-08-30 08:24:39,058 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 163.66666666666666) internal successors, (491), 3 states have internal predecessors, (491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:39,059 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 306.0) internal successors, (1224), 4 states have internal predecessors, (1224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:39,060 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 306.0) internal successors, (1224), 4 states have internal predecessors, (1224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:39,060 INFO L175 Difference]: Start difference. First operand has 65 places, 64 transitions, 403 flow. Second operand 3 states and 491 transitions. [2023-08-30 08:24:39,060 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 72 transitions, 574 flow [2023-08-30 08:24:39,066 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 72 transitions, 566 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-08-30 08:24:39,067 INFO L231 Difference]: Finished difference. Result has 64 places, 63 transitions, 393 flow [2023-08-30 08:24:39,067 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=391, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=393, PETRI_PLACES=64, PETRI_TRANSITIONS=63} [2023-08-30 08:24:39,068 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 22 predicate places. [2023-08-30 08:24:39,068 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 63 transitions, 393 flow [2023-08-30 08:24:39,068 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 156.33333333333334) internal successors, (469), 3 states have internal predecessors, (469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:39,069 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:24:39,069 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2023-08-30 08:24:39,069 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-30 08:24:39,069 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-30 08:24:39,069 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:24:39,070 INFO L85 PathProgramCache]: Analyzing trace with hash -334382869, now seen corresponding path program 1 times [2023-08-30 08:24:39,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:24:39,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749141091] [2023-08-30 08:24:39,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:24:39,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:24:39,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:24:39,115 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 08:24:39,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:24:39,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749141091] [2023-08-30 08:24:39,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1749141091] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:24:39,115 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 08:24:39,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 08:24:39,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735187376] [2023-08-30 08:24:39,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:24:39,116 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 08:24:39,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:24:39,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 08:24:39,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 08:24:39,123 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 149 out of 306 [2023-08-30 08:24:39,124 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 63 transitions, 393 flow. Second operand has 3 states, 3 states have (on average 155.33333333333334) internal successors, (466), 3 states have internal predecessors, (466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:39,124 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:24:39,124 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 149 of 306 [2023-08-30 08:24:39,124 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:24:39,392 INFO L130 PetriNetUnfolder]: 1421/2560 cut-off events. [2023-08-30 08:24:39,393 INFO L131 PetriNetUnfolder]: For 3186/3190 co-relation queries the response was YES. [2023-08-30 08:24:39,399 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7985 conditions, 2560 events. 1421/2560 cut-off events. For 3186/3190 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 12303 event pairs, 395 based on Foata normal form. 4/2558 useless extension candidates. Maximal degree in co-relation 4718. Up to 1498 conditions per place. [2023-08-30 08:24:39,408 INFO L137 encePairwiseOnDemand]: 302/306 looper letters, 74 selfloop transitions, 4 changer transitions 0/83 dead transitions. [2023-08-30 08:24:39,408 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 83 transitions, 652 flow [2023-08-30 08:24:39,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 08:24:39,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 08:24:39,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 496 transitions. [2023-08-30 08:24:39,410 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5403050108932462 [2023-08-30 08:24:39,410 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 496 transitions. [2023-08-30 08:24:39,410 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 496 transitions. [2023-08-30 08:24:39,411 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:24:39,411 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 496 transitions. [2023-08-30 08:24:39,412 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 165.33333333333334) internal successors, (496), 3 states have internal predecessors, (496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:39,413 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 306.0) internal successors, (1224), 4 states have internal predecessors, (1224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:39,414 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 306.0) internal successors, (1224), 4 states have internal predecessors, (1224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:39,414 INFO L175 Difference]: Start difference. First operand has 64 places, 63 transitions, 393 flow. Second operand 3 states and 496 transitions. [2023-08-30 08:24:39,414 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 83 transitions, 652 flow [2023-08-30 08:24:39,421 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 83 transitions, 651 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 08:24:39,422 INFO L231 Difference]: Finished difference. Result has 65 places, 63 transitions, 405 flow [2023-08-30 08:24:39,422 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=388, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=405, PETRI_PLACES=65, PETRI_TRANSITIONS=63} [2023-08-30 08:24:39,423 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 23 predicate places. [2023-08-30 08:24:39,423 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 63 transitions, 405 flow [2023-08-30 08:24:39,423 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 155.33333333333334) internal successors, (466), 3 states have internal predecessors, (466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:39,424 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:24:39,424 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:24:39,424 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-30 08:24:39,424 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-30 08:24:39,425 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:24:39,425 INFO L85 PathProgramCache]: Analyzing trace with hash -591784532, now seen corresponding path program 1 times [2023-08-30 08:24:39,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:24:39,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887512913] [2023-08-30 08:24:39,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:24:39,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:24:39,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:24:39,548 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 08:24:39,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:24:39,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1887512913] [2023-08-30 08:24:39,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1887512913] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:24:39,549 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 08:24:39,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 08:24:39,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103241537] [2023-08-30 08:24:39,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:24:39,550 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 08:24:39,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:24:39,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 08:24:39,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-30 08:24:39,578 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 306 [2023-08-30 08:24:39,578 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 63 transitions, 405 flow. Second operand has 4 states, 4 states have (on average 151.5) internal successors, (606), 4 states have internal predecessors, (606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:39,579 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:24:39,579 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 306 [2023-08-30 08:24:39,579 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:24:39,872 INFO L130 PetriNetUnfolder]: 1424/2553 cut-off events. [2023-08-30 08:24:39,872 INFO L131 PetriNetUnfolder]: For 4190/4190 co-relation queries the response was YES. [2023-08-30 08:24:39,880 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8363 conditions, 2553 events. 1424/2553 cut-off events. For 4190/4190 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 12080 event pairs, 1086 based on Foata normal form. 18/2565 useless extension candidates. Maximal degree in co-relation 7946. Up to 2415 conditions per place. [2023-08-30 08:24:39,887 INFO L137 encePairwiseOnDemand]: 301/306 looper letters, 58 selfloop transitions, 6 changer transitions 9/74 dead transitions. [2023-08-30 08:24:39,888 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 74 transitions, 595 flow [2023-08-30 08:24:39,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 08:24:39,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 08:24:39,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 623 transitions. [2023-08-30 08:24:39,890 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5089869281045751 [2023-08-30 08:24:39,890 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 623 transitions. [2023-08-30 08:24:39,890 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 623 transitions. [2023-08-30 08:24:39,891 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:24:39,891 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 623 transitions. [2023-08-30 08:24:39,892 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 155.75) internal successors, (623), 4 states have internal predecessors, (623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:39,894 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 306.0) internal successors, (1530), 5 states have internal predecessors, (1530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:39,894 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 306.0) internal successors, (1530), 5 states have internal predecessors, (1530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:39,895 INFO L175 Difference]: Start difference. First operand has 65 places, 63 transitions, 405 flow. Second operand 4 states and 623 transitions. [2023-08-30 08:24:39,895 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 74 transitions, 595 flow [2023-08-30 08:24:39,902 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 74 transitions, 587 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 08:24:39,903 INFO L231 Difference]: Finished difference. Result has 66 places, 59 transitions, 398 flow [2023-08-30 08:24:39,903 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=395, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=398, PETRI_PLACES=66, PETRI_TRANSITIONS=59} [2023-08-30 08:24:39,904 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 24 predicate places. [2023-08-30 08:24:39,904 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 59 transitions, 398 flow [2023-08-30 08:24:39,904 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 151.5) internal successors, (606), 4 states have internal predecessors, (606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:39,904 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:24:39,905 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:24:39,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-30 08:24:39,905 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-30 08:24:39,905 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:24:39,906 INFO L85 PathProgramCache]: Analyzing trace with hash -1049374055, now seen corresponding path program 1 times [2023-08-30 08:24:39,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:24:39,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1229943646] [2023-08-30 08:24:39,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:24:39,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:24:39,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:24:40,025 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 08:24:40,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:24:40,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1229943646] [2023-08-30 08:24:40,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1229943646] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 08:24:40,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [201535896] [2023-08-30 08:24:40,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:24:40,027 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 08:24:40,027 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 08:24:40,028 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 08:24:40,056 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 08:24:40,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:24:40,153 INFO L263 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 08:24:40,155 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 08:24:40,207 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 08:24:40,207 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 08:24:40,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [201535896] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:24:40,208 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 08:24:40,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 9 [2023-08-30 08:24:40,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771008374] [2023-08-30 08:24:40,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:24:40,208 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 08:24:40,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:24:40,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 08:24:40,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2023-08-30 08:24:40,240 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 143 out of 306 [2023-08-30 08:24:40,242 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 59 transitions, 398 flow. Second operand has 5 states, 5 states have (on average 148.4) internal successors, (742), 5 states have internal predecessors, (742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:40,242 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:24:40,242 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 143 of 306 [2023-08-30 08:24:40,242 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:24:40,546 INFO L130 PetriNetUnfolder]: 1361/2424 cut-off events. [2023-08-30 08:24:40,546 INFO L131 PetriNetUnfolder]: For 4092/4092 co-relation queries the response was YES. [2023-08-30 08:24:40,551 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8175 conditions, 2424 events. 1361/2424 cut-off events. For 4092/4092 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 10945 event pairs, 405 based on Foata normal form. 22/2440 useless extension candidates. Maximal degree in co-relation 7743. Up to 1340 conditions per place. [2023-08-30 08:24:40,558 INFO L137 encePairwiseOnDemand]: 298/306 looper letters, 74 selfloop transitions, 19 changer transitions 0/94 dead transitions. [2023-08-30 08:24:40,558 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 94 transitions, 784 flow [2023-08-30 08:24:40,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 08:24:40,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 08:24:40,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 914 transitions. [2023-08-30 08:24:40,562 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49782135076252726 [2023-08-30 08:24:40,562 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 914 transitions. [2023-08-30 08:24:40,562 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 914 transitions. [2023-08-30 08:24:40,563 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:24:40,563 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 914 transitions. [2023-08-30 08:24:40,565 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 152.33333333333334) internal successors, (914), 6 states have internal predecessors, (914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:40,567 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 306.0) internal successors, (2142), 7 states have internal predecessors, (2142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:40,567 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 306.0) internal successors, (2142), 7 states have internal predecessors, (2142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:40,567 INFO L175 Difference]: Start difference. First operand has 66 places, 59 transitions, 398 flow. Second operand 6 states and 914 transitions. [2023-08-30 08:24:40,568 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 94 transitions, 784 flow [2023-08-30 08:24:40,573 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 94 transitions, 770 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-30 08:24:40,575 INFO L231 Difference]: Finished difference. Result has 67 places, 67 transitions, 540 flow [2023-08-30 08:24:40,576 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=386, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=540, PETRI_PLACES=67, PETRI_TRANSITIONS=67} [2023-08-30 08:24:40,576 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 25 predicate places. [2023-08-30 08:24:40,577 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 67 transitions, 540 flow [2023-08-30 08:24:40,577 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 148.4) internal successors, (742), 5 states have internal predecessors, (742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:40,577 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:24:40,577 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:24:40,586 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 08:24:40,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 08:24:40,783 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-30 08:24:40,784 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:24:40,784 INFO L85 PathProgramCache]: Analyzing trace with hash -733508628, now seen corresponding path program 1 times [2023-08-30 08:24:40,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:24:40,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1522035451] [2023-08-30 08:24:40,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:24:40,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:24:40,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:24:40,861 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 08:24:40,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:24:40,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1522035451] [2023-08-30 08:24:40,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1522035451] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:24:40,862 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 08:24:40,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 08:24:40,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935575503] [2023-08-30 08:24:40,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:24:40,864 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 08:24:40,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:24:40,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 08:24:40,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 08:24:40,902 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 306 [2023-08-30 08:24:40,903 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 67 transitions, 540 flow. Second operand has 5 states, 5 states have (on average 146.4) internal successors, (732), 5 states have internal predecessors, (732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:40,903 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:24:40,903 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 306 [2023-08-30 08:24:40,903 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:24:41,183 INFO L130 PetriNetUnfolder]: 1410/2523 cut-off events. [2023-08-30 08:24:41,183 INFO L131 PetriNetUnfolder]: For 4800/4800 co-relation queries the response was YES. [2023-08-30 08:24:41,190 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8765 conditions, 2523 events. 1410/2523 cut-off events. For 4800/4800 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 11570 event pairs, 275 based on Foata normal form. 8/2525 useless extension candidates. Maximal degree in co-relation 8322. Up to 1338 conditions per place. [2023-08-30 08:24:41,198 INFO L137 encePairwiseOnDemand]: 298/306 looper letters, 87 selfloop transitions, 19 changer transitions 0/107 dead transitions. [2023-08-30 08:24:41,199 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 107 transitions, 940 flow [2023-08-30 08:24:41,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 08:24:41,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 08:24:41,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 771 transitions. [2023-08-30 08:24:41,201 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.503921568627451 [2023-08-30 08:24:41,201 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 771 transitions. [2023-08-30 08:24:41,201 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 771 transitions. [2023-08-30 08:24:41,202 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:24:41,202 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 771 transitions. [2023-08-30 08:24:41,203 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 154.2) internal successors, (771), 5 states have internal predecessors, (771), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:41,205 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 306.0) internal successors, (1836), 6 states have internal predecessors, (1836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:41,206 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 306.0) internal successors, (1836), 6 states have internal predecessors, (1836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:41,206 INFO L175 Difference]: Start difference. First operand has 67 places, 67 transitions, 540 flow. Second operand 5 states and 771 transitions. [2023-08-30 08:24:41,206 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 107 transitions, 940 flow [2023-08-30 08:24:41,214 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 107 transitions, 931 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-30 08:24:41,216 INFO L231 Difference]: Finished difference. Result has 71 places, 69 transitions, 612 flow [2023-08-30 08:24:41,216 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=520, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=612, PETRI_PLACES=71, PETRI_TRANSITIONS=69} [2023-08-30 08:24:41,217 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 29 predicate places. [2023-08-30 08:24:41,217 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 69 transitions, 612 flow [2023-08-30 08:24:41,218 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 146.4) internal successors, (732), 5 states have internal predecessors, (732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:41,218 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:24:41,218 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1] [2023-08-30 08:24:41,218 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-30 08:24:41,218 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-30 08:24:41,219 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:24:41,219 INFO L85 PathProgramCache]: Analyzing trace with hash 1545815804, now seen corresponding path program 1 times [2023-08-30 08:24:41,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:24:41,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [539998848] [2023-08-30 08:24:41,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:24:41,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:24:41,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:24:41,379 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 08:24:41,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:24:41,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [539998848] [2023-08-30 08:24:41,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [539998848] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 08:24:41,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [620625509] [2023-08-30 08:24:41,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:24:41,380 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 08:24:41,380 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 08:24:41,381 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 08:24:41,406 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 08:24:41,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:24:41,512 INFO L263 TraceCheckSpWp]: Trace formula consists of 308 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-30 08:24:41,514 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 08:24:41,572 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 08:24:41,573 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 08:24:41,675 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 08:24:41,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [620625509] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 08:24:41,676 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 08:24:41,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2023-08-30 08:24:41,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537706477] [2023-08-30 08:24:41,677 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 08:24:41,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-08-30 08:24:41,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:24:41,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-08-30 08:24:41,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2023-08-30 08:24:41,781 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 306 [2023-08-30 08:24:41,784 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 69 transitions, 612 flow. Second operand has 18 states, 18 states have (on average 145.05555555555554) internal successors, (2611), 18 states have internal predecessors, (2611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:41,784 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:24:41,784 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 306 [2023-08-30 08:24:41,784 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:24:42,577 INFO L130 PetriNetUnfolder]: 2450/4359 cut-off events. [2023-08-30 08:24:42,577 INFO L131 PetriNetUnfolder]: For 13104/13104 co-relation queries the response was YES. [2023-08-30 08:24:42,590 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15858 conditions, 4359 events. 2450/4359 cut-off events. For 13104/13104 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 19534 event pairs, 373 based on Foata normal form. 100/4459 useless extension candidates. Maximal degree in co-relation 15200. Up to 873 conditions per place. [2023-08-30 08:24:42,606 INFO L137 encePairwiseOnDemand]: 298/306 looper letters, 250 selfloop transitions, 62 changer transitions 0/313 dead transitions. [2023-08-30 08:24:42,606 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 313 transitions, 2626 flow [2023-08-30 08:24:42,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-08-30 08:24:42,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-08-30 08:24:42,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2934 transitions. [2023-08-30 08:24:42,613 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5046439628482973 [2023-08-30 08:24:42,613 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2934 transitions. [2023-08-30 08:24:42,613 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2934 transitions. [2023-08-30 08:24:42,615 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:24:42,615 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2934 transitions. [2023-08-30 08:24:42,620 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 154.42105263157896) internal successors, (2934), 19 states have internal predecessors, (2934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:42,626 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 306.0) internal successors, (6120), 20 states have internal predecessors, (6120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:42,628 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 306.0) internal successors, (6120), 20 states have internal predecessors, (6120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:42,628 INFO L175 Difference]: Start difference. First operand has 71 places, 69 transitions, 612 flow. Second operand 19 states and 2934 transitions. [2023-08-30 08:24:42,628 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 313 transitions, 2626 flow [2023-08-30 08:24:42,641 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 313 transitions, 2606 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-30 08:24:42,644 INFO L231 Difference]: Finished difference. Result has 93 places, 105 transitions, 1228 flow [2023-08-30 08:24:42,645 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=604, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=1228, PETRI_PLACES=93, PETRI_TRANSITIONS=105} [2023-08-30 08:24:42,645 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 51 predicate places. [2023-08-30 08:24:42,645 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 105 transitions, 1228 flow [2023-08-30 08:24:42,652 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 145.05555555555554) internal successors, (2611), 18 states have internal predecessors, (2611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:42,652 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:24:42,652 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:24:42,663 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-30 08:24:42,858 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 08:24:42,859 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-30 08:24:42,859 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:24:42,859 INFO L85 PathProgramCache]: Analyzing trace with hash 921312875, now seen corresponding path program 2 times [2023-08-30 08:24:42,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:24:42,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338674345] [2023-08-30 08:24:42,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:24:42,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:24:42,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:24:43,073 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 08:24:43,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:24:43,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338674345] [2023-08-30 08:24:43,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [338674345] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:24:43,074 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 08:24:43,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-30 08:24:43,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917645457] [2023-08-30 08:24:43,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:24:43,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 08:24:43,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:24:43,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 08:24:43,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-08-30 08:24:43,151 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 306 [2023-08-30 08:24:43,152 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 105 transitions, 1228 flow. Second operand has 7 states, 7 states have (on average 138.0) internal successors, (966), 7 states have internal predecessors, (966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:43,152 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:24:43,152 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 306 [2023-08-30 08:24:43,153 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:24:43,723 INFO L130 PetriNetUnfolder]: 2313/4164 cut-off events. [2023-08-30 08:24:43,723 INFO L131 PetriNetUnfolder]: For 14098/14098 co-relation queries the response was YES. [2023-08-30 08:24:43,737 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15657 conditions, 4164 events. 2313/4164 cut-off events. For 14098/14098 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 18763 event pairs, 300 based on Foata normal form. 72/4236 useless extension candidates. Maximal degree in co-relation 14958. Up to 2986 conditions per place. [2023-08-30 08:24:43,751 INFO L137 encePairwiseOnDemand]: 294/306 looper letters, 70 selfloop transitions, 54 changer transitions 0/125 dead transitions. [2023-08-30 08:24:43,751 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 125 transitions, 1405 flow [2023-08-30 08:24:43,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-30 08:24:43,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-30 08:24:43,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1126 transitions. [2023-08-30 08:24:43,754 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4599673202614379 [2023-08-30 08:24:43,754 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1126 transitions. [2023-08-30 08:24:43,754 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1126 transitions. [2023-08-30 08:24:43,755 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:24:43,755 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1126 transitions. [2023-08-30 08:24:43,757 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 140.75) internal successors, (1126), 8 states have internal predecessors, (1126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:43,760 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 306.0) internal successors, (2754), 9 states have internal predecessors, (2754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:43,760 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 306.0) internal successors, (2754), 9 states have internal predecessors, (2754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:43,761 INFO L175 Difference]: Start difference. First operand has 93 places, 105 transitions, 1228 flow. Second operand 8 states and 1126 transitions. [2023-08-30 08:24:43,761 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 125 transitions, 1405 flow [2023-08-30 08:24:43,785 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 125 transitions, 1231 flow, removed 60 selfloop flow, removed 9 redundant places. [2023-08-30 08:24:43,787 INFO L231 Difference]: Finished difference. Result has 90 places, 90 transitions, 937 flow [2023-08-30 08:24:43,787 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=821, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=937, PETRI_PLACES=90, PETRI_TRANSITIONS=90} [2023-08-30 08:24:43,788 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 48 predicate places. [2023-08-30 08:24:43,788 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 90 transitions, 937 flow [2023-08-30 08:24:43,788 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 138.0) internal successors, (966), 7 states have internal predecessors, (966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:43,788 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:24:43,788 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:24:43,789 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-30 08:24:43,789 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-30 08:24:43,789 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:24:43,789 INFO L85 PathProgramCache]: Analyzing trace with hash 921312938, now seen corresponding path program 2 times [2023-08-30 08:24:43,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:24:43,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377763013] [2023-08-30 08:24:43,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:24:43,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:24:43,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:24:43,991 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 08:24:43,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:24:43,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1377763013] [2023-08-30 08:24:43,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1377763013] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 08:24:43,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [582687066] [2023-08-30 08:24:43,992 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 08:24:43,992 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 08:24:43,992 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 08:24:43,994 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 08:24:44,016 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 08:24:44,131 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 08:24:44,131 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 08:24:44,133 INFO L263 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-30 08:24:44,135 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 08:24:44,181 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-30 08:24:44,182 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 08:24:44,255 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-30 08:24:44,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [582687066] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 08:24:44,255 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 08:24:44,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 4, 4] total 11 [2023-08-30 08:24:44,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148610389] [2023-08-30 08:24:44,256 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 08:24:44,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-30 08:24:44,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:24:44,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-30 08:24:44,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2023-08-30 08:24:44,379 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 306 [2023-08-30 08:24:44,381 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 90 transitions, 937 flow. Second operand has 13 states, 13 states have (on average 138.23076923076923) internal successors, (1797), 13 states have internal predecessors, (1797), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:44,381 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:24:44,381 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 306 [2023-08-30 08:24:44,381 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:24:45,276 INFO L130 PetriNetUnfolder]: 2908/5229 cut-off events. [2023-08-30 08:24:45,277 INFO L131 PetriNetUnfolder]: For 15002/15002 co-relation queries the response was YES. [2023-08-30 08:24:45,302 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19101 conditions, 5229 events. 2908/5229 cut-off events. For 15002/15002 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 25037 event pairs, 441 based on Foata normal form. 38/5267 useless extension candidates. Maximal degree in co-relation 18365. Up to 2471 conditions per place. [2023-08-30 08:24:45,322 INFO L137 encePairwiseOnDemand]: 295/306 looper letters, 183 selfloop transitions, 46 changer transitions 0/230 dead transitions. [2023-08-30 08:24:45,323 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 230 transitions, 2187 flow [2023-08-30 08:24:45,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-08-30 08:24:45,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-08-30 08:24:45,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 2149 transitions. [2023-08-30 08:24:45,329 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4681917211328976 [2023-08-30 08:24:45,329 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 2149 transitions. [2023-08-30 08:24:45,329 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 2149 transitions. [2023-08-30 08:24:45,330 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:24:45,330 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 2149 transitions. [2023-08-30 08:24:45,334 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 143.26666666666668) internal successors, (2149), 15 states have internal predecessors, (2149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:45,341 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 306.0) internal successors, (4896), 16 states have internal predecessors, (4896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:45,342 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 306.0) internal successors, (4896), 16 states have internal predecessors, (4896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:45,342 INFO L175 Difference]: Start difference. First operand has 90 places, 90 transitions, 937 flow. Second operand 15 states and 2149 transitions. [2023-08-30 08:24:45,343 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 230 transitions, 2187 flow [2023-08-30 08:24:45,379 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 230 transitions, 2127 flow, removed 6 selfloop flow, removed 4 redundant places. [2023-08-30 08:24:45,385 INFO L231 Difference]: Finished difference. Result has 108 places, 112 transitions, 1342 flow [2023-08-30 08:24:45,385 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=900, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1342, PETRI_PLACES=108, PETRI_TRANSITIONS=112} [2023-08-30 08:24:45,386 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 66 predicate places. [2023-08-30 08:24:45,387 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 112 transitions, 1342 flow [2023-08-30 08:24:45,387 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 138.23076923076923) internal successors, (1797), 13 states have internal predecessors, (1797), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:45,387 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:24:45,388 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:24:45,399 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-08-30 08:24:45,593 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,SelfDestructingSolverStorable15 [2023-08-30 08:24:45,594 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-30 08:24:45,594 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:24:45,594 INFO L85 PathProgramCache]: Analyzing trace with hash 810645160, now seen corresponding path program 3 times [2023-08-30 08:24:45,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:24:45,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212645291] [2023-08-30 08:24:45,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:24:45,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:24:45,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:24:45,956 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 08:24:45,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:24:45,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [212645291] [2023-08-30 08:24:45,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [212645291] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 08:24:45,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [796636543] [2023-08-30 08:24:45,958 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-30 08:24:45,958 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 08:24:45,958 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 08:24:45,959 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 08:24:45,982 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 08:24:46,175 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2023-08-30 08:24:46,175 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 08:24:46,177 INFO L263 TraceCheckSpWp]: Trace formula consists of 426 conjuncts, 13 conjunts are in the unsatisfiable core [2023-08-30 08:24:46,180 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 08:24:46,252 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-30 08:24:46,252 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 08:24:46,403 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-30 08:24:46,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [796636543] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 08:24:46,404 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 08:24:46,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8, 8] total 19 [2023-08-30 08:24:46,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455740799] [2023-08-30 08:24:46,405 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 08:24:46,405 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-08-30 08:24:46,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:24:46,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-08-30 08:24:46,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=315, Unknown=0, NotChecked=0, Total=420 [2023-08-30 08:24:46,555 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 306 [2023-08-30 08:24:46,557 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 112 transitions, 1342 flow. Second operand has 21 states, 21 states have (on average 137.76190476190476) internal successors, (2893), 21 states have internal predecessors, (2893), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:46,557 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:24:46,557 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 306 [2023-08-30 08:24:46,558 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:24:47,632 INFO L130 PetriNetUnfolder]: 3558/6375 cut-off events. [2023-08-30 08:24:47,632 INFO L131 PetriNetUnfolder]: For 24520/24520 co-relation queries the response was YES. [2023-08-30 08:24:47,654 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24167 conditions, 6375 events. 3558/6375 cut-off events. For 24520/24520 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 32125 event pairs, 485 based on Foata normal form. 48/6423 useless extension candidates. Maximal degree in co-relation 23859. Up to 1321 conditions per place. [2023-08-30 08:24:47,671 INFO L137 encePairwiseOnDemand]: 296/306 looper letters, 269 selfloop transitions, 91 changer transitions 0/361 dead transitions. [2023-08-30 08:24:47,671 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 361 transitions, 3446 flow [2023-08-30 08:24:47,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-08-30 08:24:47,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2023-08-30 08:24:47,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 3586 transitions. [2023-08-30 08:24:47,680 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46875816993464053 [2023-08-30 08:24:47,680 INFO L72 ComplementDD]: Start complementDD. Operand 25 states and 3586 transitions. [2023-08-30 08:24:47,680 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 3586 transitions. [2023-08-30 08:24:47,681 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:24:47,681 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 25 states and 3586 transitions. [2023-08-30 08:24:47,687 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 26 states, 25 states have (on average 143.44) internal successors, (3586), 25 states have internal predecessors, (3586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:47,697 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 26 states, 26 states have (on average 306.0) internal successors, (7956), 26 states have internal predecessors, (7956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:47,698 INFO L81 ComplementDD]: Finished complementDD. Result has 26 states, 26 states have (on average 306.0) internal successors, (7956), 26 states have internal predecessors, (7956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:47,699 INFO L175 Difference]: Start difference. First operand has 108 places, 112 transitions, 1342 flow. Second operand 25 states and 3586 transitions. [2023-08-30 08:24:47,699 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 361 transitions, 3446 flow [2023-08-30 08:24:47,757 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 361 transitions, 3362 flow, removed 40 selfloop flow, removed 2 redundant places. [2023-08-30 08:24:47,762 INFO L231 Difference]: Finished difference. Result has 138 places, 139 transitions, 1991 flow [2023-08-30 08:24:47,762 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=1290, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=1991, PETRI_PLACES=138, PETRI_TRANSITIONS=139} [2023-08-30 08:24:47,762 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 96 predicate places. [2023-08-30 08:24:47,762 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 139 transitions, 1991 flow [2023-08-30 08:24:47,763 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 137.76190476190476) internal successors, (2893), 21 states have internal predecessors, (2893), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:47,763 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:24:47,763 INFO L208 CegarLoopForPetriNet]: trace histogram [8, 8, 8, 8, 7, 7, 7, 7, 1, 1, 1, 1] [2023-08-30 08:24:47,770 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 08:24:47,970 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,SelfDestructingSolverStorable16 [2023-08-30 08:24:47,970 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-30 08:24:47,971 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:24:47,971 INFO L85 PathProgramCache]: Analyzing trace with hash 1147695864, now seen corresponding path program 2 times [2023-08-30 08:24:47,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:24:47,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1131290109] [2023-08-30 08:24:47,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:24:47,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:24:48,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:24:48,333 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 0 proven. 203 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 08:24:48,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:24:48,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1131290109] [2023-08-30 08:24:48,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1131290109] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 08:24:48,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1367360070] [2023-08-30 08:24:48,334 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 08:24:48,334 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 08:24:48,334 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 08:24:48,335 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 08:24:48,356 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 08:24:48,511 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 08:24:48,511 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 08:24:48,514 INFO L263 TraceCheckSpWp]: Trace formula consists of 532 conjuncts, 17 conjunts are in the unsatisfiable core [2023-08-30 08:24:48,517 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 08:24:48,617 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 0 proven. 203 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 08:24:48,617 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 08:24:48,890 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 0 proven. 203 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 08:24:48,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1367360070] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 08:24:48,890 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 08:24:48,890 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 32 [2023-08-30 08:24:48,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237578141] [2023-08-30 08:24:48,890 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 08:24:48,891 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-08-30 08:24:48,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:24:48,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-08-30 08:24:48,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=306, Invalid=816, Unknown=0, NotChecked=0, Total=1122 [2023-08-30 08:24:49,057 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 306 [2023-08-30 08:24:49,059 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 139 transitions, 1991 flow. Second operand has 34 states, 34 states have (on average 145.02941176470588) internal successors, (4931), 34 states have internal predecessors, (4931), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:49,059 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:24:49,059 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 306 [2023-08-30 08:24:49,059 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:24:51,100 INFO L130 PetriNetUnfolder]: 5858/10531 cut-off events. [2023-08-30 08:24:51,100 INFO L131 PetriNetUnfolder]: For 57270/57270 co-relation queries the response was YES. [2023-08-30 08:24:51,136 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41208 conditions, 10531 events. 5858/10531 cut-off events. For 57270/57270 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 51478 event pairs, 939 based on Foata normal form. 240/10771 useless extension candidates. Maximal degree in co-relation 40832. Up to 2778 conditions per place. [2023-08-30 08:24:51,163 INFO L137 encePairwiseOnDemand]: 299/306 looper letters, 496 selfloop transitions, 115 changer transitions 0/612 dead transitions. [2023-08-30 08:24:51,163 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 612 transitions, 6061 flow [2023-08-30 08:24:51,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2023-08-30 08:24:51,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2023-08-30 08:24:51,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 5387 transitions. [2023-08-30 08:24:51,171 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5029878618113912 [2023-08-30 08:24:51,171 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 5387 transitions. [2023-08-30 08:24:51,171 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 5387 transitions. [2023-08-30 08:24:51,173 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:24:51,174 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 5387 transitions. [2023-08-30 08:24:51,181 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 153.9142857142857) internal successors, (5387), 35 states have internal predecessors, (5387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:51,193 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 306.0) internal successors, (11016), 36 states have internal predecessors, (11016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:51,194 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 306.0) internal successors, (11016), 36 states have internal predecessors, (11016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:51,194 INFO L175 Difference]: Start difference. First operand has 138 places, 139 transitions, 1991 flow. Second operand 35 states and 5387 transitions. [2023-08-30 08:24:51,194 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 612 transitions, 6061 flow [2023-08-30 08:24:51,433 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 612 transitions, 5944 flow, removed 40 selfloop flow, removed 8 redundant places. [2023-08-30 08:24:51,443 INFO L231 Difference]: Finished difference. Result has 172 places, 196 transitions, 3174 flow [2023-08-30 08:24:51,443 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=1784, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=3174, PETRI_PLACES=172, PETRI_TRANSITIONS=196} [2023-08-30 08:24:51,443 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 130 predicate places. [2023-08-30 08:24:51,444 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 196 transitions, 3174 flow [2023-08-30 08:24:51,445 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 145.02941176470588) internal successors, (4931), 34 states have internal predecessors, (4931), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:51,445 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:24:51,445 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:24:51,452 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 08:24:51,651 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 08:24:51,652 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-30 08:24:51,652 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:24:51,652 INFO L85 PathProgramCache]: Analyzing trace with hash 1905252954, now seen corresponding path program 4 times [2023-08-30 08:24:51,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:24:51,653 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098979517] [2023-08-30 08:24:51,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:24:51,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:24:51,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:24:52,152 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 142 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-30 08:24:52,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:24:52,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1098979517] [2023-08-30 08:24:52,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1098979517] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 08:24:52,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [757129119] [2023-08-30 08:24:52,153 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-30 08:24:52,154 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 08:24:52,154 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 08:24:52,157 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 08:24:52,184 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 08:24:52,364 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-30 08:24:52,365 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 08:24:52,368 INFO L263 TraceCheckSpWp]: Trace formula consists of 538 conjuncts, 17 conjunts are in the unsatisfiable core [2023-08-30 08:24:52,374 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 08:24:52,459 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 142 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-30 08:24:52,459 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 08:24:52,693 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 142 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-30 08:24:52,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [757129119] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 08:24:52,693 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 08:24:52,693 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 12] total 27 [2023-08-30 08:24:52,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463949258] [2023-08-30 08:24:52,694 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 08:24:52,694 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-08-30 08:24:52,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:24:52,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-08-30 08:24:52,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=197, Invalid=615, Unknown=0, NotChecked=0, Total=812 [2023-08-30 08:24:52,896 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 306 [2023-08-30 08:24:52,899 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 196 transitions, 3174 flow. Second operand has 29 states, 29 states have (on average 137.55172413793105) internal successors, (3989), 29 states have internal predecessors, (3989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:52,899 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:24:52,899 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 306 [2023-08-30 08:24:52,899 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:24:55,783 INFO L130 PetriNetUnfolder]: 8021/14364 cut-off events. [2023-08-30 08:24:55,783 INFO L131 PetriNetUnfolder]: For 84336/84336 co-relation queries the response was YES. [2023-08-30 08:24:55,833 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57943 conditions, 14364 events. 8021/14364 cut-off events. For 84336/84336 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 76194 event pairs, 771 based on Foata normal form. 96/14460 useless extension candidates. Maximal degree in co-relation 56728. Up to 2988 conditions per place. [2023-08-30 08:24:55,866 INFO L137 encePairwiseOnDemand]: 296/306 looper letters, 405 selfloop transitions, 216 changer transitions 0/622 dead transitions. [2023-08-30 08:24:55,866 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 622 transitions, 7379 flow [2023-08-30 08:24:55,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2023-08-30 08:24:55,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2023-08-30 08:24:55,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 5565 transitions. [2023-08-30 08:24:55,875 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4663147310206134 [2023-08-30 08:24:55,875 INFO L72 ComplementDD]: Start complementDD. Operand 39 states and 5565 transitions. [2023-08-30 08:24:55,875 INFO L73 IsDeterministic]: Start isDeterministic. Operand 39 states and 5565 transitions. [2023-08-30 08:24:55,877 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:24:55,877 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 39 states and 5565 transitions. [2023-08-30 08:24:55,883 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 40 states, 39 states have (on average 142.69230769230768) internal successors, (5565), 39 states have internal predecessors, (5565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:55,893 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 40 states, 40 states have (on average 306.0) internal successors, (12240), 40 states have internal predecessors, (12240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:55,894 INFO L81 ComplementDD]: Finished complementDD. Result has 40 states, 40 states have (on average 306.0) internal successors, (12240), 40 states have internal predecessors, (12240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:55,894 INFO L175 Difference]: Start difference. First operand has 172 places, 196 transitions, 3174 flow. Second operand 39 states and 5565 transitions. [2023-08-30 08:24:55,894 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 622 transitions, 7379 flow [2023-08-30 08:24:56,091 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 197 places, 622 transitions, 6960 flow, removed 162 selfloop flow, removed 13 redundant places. [2023-08-30 08:24:56,097 INFO L231 Difference]: Finished difference. Result has 208 places, 288 transitions, 4970 flow [2023-08-30 08:24:56,097 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=2816, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=139, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=39, PETRI_FLOW=4970, PETRI_PLACES=208, PETRI_TRANSITIONS=288} [2023-08-30 08:24:56,097 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 166 predicate places. [2023-08-30 08:24:56,097 INFO L495 AbstractCegarLoop]: Abstraction has has 208 places, 288 transitions, 4970 flow [2023-08-30 08:24:56,098 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 137.55172413793105) internal successors, (3989), 29 states have internal predecessors, (3989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:56,098 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:24:56,098 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:24:56,108 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 08:24:56,305 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 08:24:56,305 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-30 08:24:56,305 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:24:56,306 INFO L85 PathProgramCache]: Analyzing trace with hash 2029433002, now seen corresponding path program 1 times [2023-08-30 08:24:56,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:24:56,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499368094] [2023-08-30 08:24:56,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:24:56,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:24:56,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:24:56,842 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 0 proven. 142 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-08-30 08:24:56,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:24:56,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499368094] [2023-08-30 08:24:56,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1499368094] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 08:24:56,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [888263186] [2023-08-30 08:24:56,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:24:56,843 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 08:24:56,843 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 08:24:56,844 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 08:24:56,869 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 08:24:57,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:24:57,037 INFO L263 TraceCheckSpWp]: Trace formula consists of 580 conjuncts, 19 conjunts are in the unsatisfiable core [2023-08-30 08:24:57,043 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 08:24:57,215 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 0 proven. 142 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-08-30 08:24:57,215 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 08:24:57,410 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 0 proven. 142 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-08-30 08:24:57,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [888263186] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 08:24:57,410 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 08:24:57,411 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11, 11] total 26 [2023-08-30 08:24:57,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723836328] [2023-08-30 08:24:57,411 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 08:24:57,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-08-30 08:24:57,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:24:57,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-08-30 08:24:57,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=588, Unknown=0, NotChecked=0, Total=756 [2023-08-30 08:24:57,637 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 306 [2023-08-30 08:24:57,639 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 288 transitions, 4970 flow. Second operand has 28 states, 28 states have (on average 137.85714285714286) internal successors, (3860), 28 states have internal predecessors, (3860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:57,640 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:24:57,640 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 306 [2023-08-30 08:24:57,640 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:25:01,849 INFO L130 PetriNetUnfolder]: 11730/21007 cut-off events. [2023-08-30 08:25:01,849 INFO L131 PetriNetUnfolder]: For 139704/139704 co-relation queries the response was YES. [2023-08-30 08:25:01,962 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86630 conditions, 21007 events. 11730/21007 cut-off events. For 139704/139704 co-relation queries the response was YES. Maximal size of possible extension queue 200. Compared 124637 event pairs, 1301 based on Foata normal form. 166/21173 useless extension candidates. Maximal degree in co-relation 85090. Up to 4457 conditions per place. [2023-08-30 08:25:02,016 INFO L137 encePairwiseOnDemand]: 296/306 looper letters, 387 selfloop transitions, 384 changer transitions 0/772 dead transitions. [2023-08-30 08:25:02,017 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 772 transitions, 11415 flow [2023-08-30 08:25:02,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-08-30 08:25:02,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2023-08-30 08:25:02,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 4723 transitions. [2023-08-30 08:25:02,022 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46771637948108535 [2023-08-30 08:25:02,022 INFO L72 ComplementDD]: Start complementDD. Operand 33 states and 4723 transitions. [2023-08-30 08:25:02,022 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 4723 transitions. [2023-08-30 08:25:02,024 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:25:02,024 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 33 states and 4723 transitions. [2023-08-30 08:25:02,029 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 34 states, 33 states have (on average 143.12121212121212) internal successors, (4723), 33 states have internal predecessors, (4723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:25:02,036 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 34 states, 34 states have (on average 306.0) internal successors, (10404), 34 states have internal predecessors, (10404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:25:02,037 INFO L81 ComplementDD]: Finished complementDD. Result has 34 states, 34 states have (on average 306.0) internal successors, (10404), 34 states have internal predecessors, (10404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:25:02,038 INFO L175 Difference]: Start difference. First operand has 208 places, 288 transitions, 4970 flow. Second operand 33 states and 4723 transitions. [2023-08-30 08:25:02,038 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 772 transitions, 11415 flow [2023-08-30 08:25:02,489 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 227 places, 772 transitions, 10697 flow, removed 273 selfloop flow, removed 13 redundant places. [2023-08-30 08:25:02,497 INFO L231 Difference]: Finished difference. Result has 237 places, 488 transitions, 9122 flow [2023-08-30 08:25:02,497 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=4624, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=288, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=217, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=9122, PETRI_PLACES=237, PETRI_TRANSITIONS=488} [2023-08-30 08:25:02,498 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 195 predicate places. [2023-08-30 08:25:02,498 INFO L495 AbstractCegarLoop]: Abstraction has has 237 places, 488 transitions, 9122 flow [2023-08-30 08:25:02,499 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 137.85714285714286) internal successors, (3860), 28 states have internal predecessors, (3860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:25:02,499 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:25:02,499 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:25:02,505 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 08:25:02,705 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 08:25:02,705 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-30 08:25:02,705 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:25:02,706 INFO L85 PathProgramCache]: Analyzing trace with hash 792853539, now seen corresponding path program 5 times [2023-08-30 08:25:02,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:25:02,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675349301] [2023-08-30 08:25:02,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:25:02,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:25:02,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:25:03,478 INFO L134 CoverageAnalysis]: Checked inductivity of 333 backedges. 0 proven. 331 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 08:25:03,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:25:03,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675349301] [2023-08-30 08:25:03,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [675349301] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 08:25:03,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [659544690] [2023-08-30 08:25:03,479 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-30 08:25:03,480 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 08:25:03,480 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 08:25:03,481 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 08:25:03,504 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 08:25:03,791 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2023-08-30 08:25:03,791 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 08:25:03,795 INFO L263 TraceCheckSpWp]: Trace formula consists of 706 conjuncts, 23 conjunts are in the unsatisfiable core [2023-08-30 08:25:03,798 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 08:25:03,903 INFO L134 CoverageAnalysis]: Checked inductivity of 333 backedges. 0 proven. 325 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-30 08:25:03,903 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 08:25:04,309 INFO L134 CoverageAnalysis]: Checked inductivity of 333 backedges. 0 proven. 325 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-30 08:25:04,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [659544690] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 08:25:04,309 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 08:25:04,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 18, 18] total 39 [2023-08-30 08:25:04,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129407663] [2023-08-30 08:25:04,310 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 08:25:04,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2023-08-30 08:25:04,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:25:04,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2023-08-30 08:25:04,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=405, Invalid=1235, Unknown=0, NotChecked=0, Total=1640 [2023-08-30 08:25:04,552 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 306 [2023-08-30 08:25:04,555 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 488 transitions, 9122 flow. Second operand has 41 states, 41 states have (on average 137.390243902439) internal successors, (5633), 41 states have internal predecessors, (5633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:25:04,555 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:25:04,556 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 306 [2023-08-30 08:25:04,556 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:25:11,320 INFO L130 PetriNetUnfolder]: 15387/27478 cut-off events. [2023-08-30 08:25:11,320 INFO L131 PetriNetUnfolder]: For 211558/211558 co-relation queries the response was YES. [2023-08-30 08:25:11,520 INFO L83 FinitePrefix]: Finished finitePrefix Result has 116852 conditions, 27478 events. 15387/27478 cut-off events. For 211558/211558 co-relation queries the response was YES. Maximal size of possible extension queue 251. Compared 169509 event pairs, 2195 based on Foata normal form. 160/27638 useless extension candidates. Maximal degree in co-relation 115019. Up to 5830 conditions per place. [2023-08-30 08:25:11,598 INFO L137 encePairwiseOnDemand]: 296/306 looper letters, 669 selfloop transitions, 469 changer transitions 0/1139 dead transitions. [2023-08-30 08:25:11,598 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 286 places, 1139 transitions, 16944 flow [2023-08-30 08:25:11,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2023-08-30 08:25:11,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2023-08-30 08:25:11,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 7184 transitions. [2023-08-30 08:25:11,606 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46954248366013074 [2023-08-30 08:25:11,606 INFO L72 ComplementDD]: Start complementDD. Operand 50 states and 7184 transitions. [2023-08-30 08:25:11,606 INFO L73 IsDeterministic]: Start isDeterministic. Operand 50 states and 7184 transitions. [2023-08-30 08:25:11,608 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:25:11,608 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 50 states and 7184 transitions. [2023-08-30 08:25:11,615 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 51 states, 50 states have (on average 143.68) internal successors, (7184), 50 states have internal predecessors, (7184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:25:11,626 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 51 states, 51 states have (on average 306.0) internal successors, (15606), 51 states have internal predecessors, (15606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:25:11,627 INFO L81 ComplementDD]: Finished complementDD. Result has 51 states, 51 states have (on average 306.0) internal successors, (15606), 51 states have internal predecessors, (15606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:25:11,627 INFO L175 Difference]: Start difference. First operand has 237 places, 488 transitions, 9122 flow. Second operand 50 states and 7184 transitions. [2023-08-30 08:25:11,628 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 286 places, 1139 transitions, 16944 flow [2023-08-30 08:25:12,437 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 279 places, 1139 transitions, 16381 flow, removed 222 selfloop flow, removed 7 redundant places. [2023-08-30 08:25:12,450 INFO L231 Difference]: Finished difference. Result has 298 places, 628 transitions, 13384 flow [2023-08-30 08:25:12,450 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=8696, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=483, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=344, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=50, PETRI_FLOW=13384, PETRI_PLACES=298, PETRI_TRANSITIONS=628} [2023-08-30 08:25:12,451 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 256 predicate places. [2023-08-30 08:25:12,451 INFO L495 AbstractCegarLoop]: Abstraction has has 298 places, 628 transitions, 13384 flow [2023-08-30 08:25:12,452 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 137.390243902439) internal successors, (5633), 41 states have internal predecessors, (5633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:25:12,452 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:25:12,453 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 9, 9, 9, 9, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:25:12,460 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-08-30 08:25:12,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2023-08-30 08:25:12,659 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-30 08:25:12,659 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:25:12,660 INFO L85 PathProgramCache]: Analyzing trace with hash 1862134967, now seen corresponding path program 2 times [2023-08-30 08:25:12,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:25:12,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [825793121] [2023-08-30 08:25:12,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:25:12,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:25:12,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:25:13,343 INFO L134 CoverageAnalysis]: Checked inductivity of 341 backedges. 0 proven. 325 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-08-30 08:25:13,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:25:13,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [825793121] [2023-08-30 08:25:13,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [825793121] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 08:25:13,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [138395250] [2023-08-30 08:25:13,344 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 08:25:13,344 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 08:25:13,344 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 08:25:13,349 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 08:25:13,352 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-08-30 08:25:13,579 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 08:25:13,579 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 08:25:13,584 INFO L263 TraceCheckSpWp]: Trace formula consists of 748 conjuncts, 25 conjunts are in the unsatisfiable core [2023-08-30 08:25:13,586 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 08:25:13,727 INFO L134 CoverageAnalysis]: Checked inductivity of 341 backedges. 0 proven. 325 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-08-30 08:25:13,727 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 08:25:14,056 INFO L134 CoverageAnalysis]: Checked inductivity of 341 backedges. 0 proven. 325 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-08-30 08:25:14,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [138395250] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 08:25:14,057 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 08:25:14,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 17, 17] total 38 [2023-08-30 08:25:14,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735712414] [2023-08-30 08:25:14,057 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 08:25:14,057 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2023-08-30 08:25:14,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:25:14,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2023-08-30 08:25:14,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=350, Invalid=1210, Unknown=0, NotChecked=0, Total=1560 [2023-08-30 08:25:14,238 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 306 [2023-08-30 08:25:14,241 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 298 places, 628 transitions, 13384 flow. Second operand has 40 states, 40 states have (on average 137.6) internal successors, (5504), 40 states have internal predecessors, (5504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:25:14,241 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:25:14,241 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 306 [2023-08-30 08:25:14,241 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:25:24,393 INFO L130 PetriNetUnfolder]: 19671/35170 cut-off events. [2023-08-30 08:25:24,393 INFO L131 PetriNetUnfolder]: For 319324/319324 co-relation queries the response was YES. [2023-08-30 08:25:24,892 INFO L83 FinitePrefix]: Finished finitePrefix Result has 154708 conditions, 35170 events. 19671/35170 cut-off events. For 319324/319324 co-relation queries the response was YES. Maximal size of possible extension queue 290. Compared 228920 event pairs, 2231 based on Foata normal form. 234/35404 useless extension candidates. Maximal degree in co-relation 152762. Up to 7561 conditions per place. [2023-08-30 08:25:25,008 INFO L137 encePairwiseOnDemand]: 296/306 looper letters, 512 selfloop transitions, 778 changer transitions 0/1291 dead transitions. [2023-08-30 08:25:25,008 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 347 places, 1291 transitions, 22541 flow [2023-08-30 08:25:25,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2023-08-30 08:25:25,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2023-08-30 08:25:25,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 7149 transitions. [2023-08-30 08:25:25,017 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46725490196078434 [2023-08-30 08:25:25,017 INFO L72 ComplementDD]: Start complementDD. Operand 50 states and 7149 transitions. [2023-08-30 08:25:25,018 INFO L73 IsDeterministic]: Start isDeterministic. Operand 50 states and 7149 transitions. [2023-08-30 08:25:25,020 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:25:25,020 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 50 states and 7149 transitions. [2023-08-30 08:25:25,029 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 51 states, 50 states have (on average 142.98) internal successors, (7149), 50 states have internal predecessors, (7149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:25:25,041 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 51 states, 51 states have (on average 306.0) internal successors, (15606), 51 states have internal predecessors, (15606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:25:25,043 INFO L81 ComplementDD]: Finished complementDD. Result has 51 states, 51 states have (on average 306.0) internal successors, (15606), 51 states have internal predecessors, (15606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:25:25,043 INFO L175 Difference]: Start difference. First operand has 298 places, 628 transitions, 13384 flow. Second operand 50 states and 7149 transitions. [2023-08-30 08:25:25,043 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 347 places, 1291 transitions, 22541 flow [2023-08-30 08:25:26,576 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 330 places, 1291 transitions, 21593 flow, removed 353 selfloop flow, removed 17 redundant places. [2023-08-30 08:25:26,592 INFO L231 Difference]: Finished difference. Result has 342 places, 846 transitions, 19346 flow [2023-08-30 08:25:26,592 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=12377, PETRI_DIFFERENCE_MINUEND_PLACES=281, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=618, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=568, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=50, PETRI_FLOW=19346, PETRI_PLACES=342, PETRI_TRANSITIONS=846} [2023-08-30 08:25:26,593 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 300 predicate places. [2023-08-30 08:25:26,593 INFO L495 AbstractCegarLoop]: Abstraction has has 342 places, 846 transitions, 19346 flow [2023-08-30 08:25:26,594 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 137.6) internal successors, (5504), 40 states have internal predecessors, (5504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:25:26,594 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:25:26,594 INFO L208 CegarLoopForPetriNet]: trace histogram [9, 9, 9, 9, 8, 8, 8, 8, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:25:26,602 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-08-30 08:25:26,800 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2023-08-30 08:25:26,800 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-30 08:25:26,800 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:25:26,800 INFO L85 PathProgramCache]: Analyzing trace with hash 1131368074, now seen corresponding path program 3 times [2023-08-30 08:25:26,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:25:26,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1038606293] [2023-08-30 08:25:26,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:25:26,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:25:26,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:25:27,668 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 0 proven. 271 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-08-30 08:25:27,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:25:27,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1038606293] [2023-08-30 08:25:27,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1038606293] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 08:25:27,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1768077049] [2023-08-30 08:25:27,670 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-30 08:25:27,670 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 08:25:27,670 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 08:25:27,671 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 08:25:27,673 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-08-30 08:25:28,127 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2023-08-30 08:25:28,127 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 08:25:28,131 INFO L263 TraceCheckSpWp]: Trace formula consists of 734 conjuncts, 25 conjunts are in the unsatisfiable core [2023-08-30 08:25:28,132 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 08:25:28,246 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 0 proven. 265 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-08-30 08:25:28,246 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 08:25:28,503 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 0 proven. 265 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-08-30 08:25:28,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1768077049] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 08:25:28,503 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 08:25:28,503 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 14, 14] total 33 [2023-08-30 08:25:28,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036564042] [2023-08-30 08:25:28,504 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 08:25:28,504 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2023-08-30 08:25:28,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:25:28,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2023-08-30 08:25:28,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=248, Invalid=942, Unknown=0, NotChecked=0, Total=1190 [2023-08-30 08:25:28,714 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 306 [2023-08-30 08:25:28,716 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 342 places, 846 transitions, 19346 flow. Second operand has 35 states, 35 states have (on average 137.9142857142857) internal successors, (4827), 35 states have internal predecessors, (4827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:25:28,716 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:25:28,716 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 306 [2023-08-30 08:25:28,716 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:25:48,689 INFO L130 PetriNetUnfolder]: 33608/60213 cut-off events. [2023-08-30 08:25:48,689 INFO L131 PetriNetUnfolder]: For 533538/533538 co-relation queries the response was YES. [2023-08-30 08:25:49,973 INFO L83 FinitePrefix]: Finished finitePrefix Result has 275460 conditions, 60213 events. 33608/60213 cut-off events. For 533538/533538 co-relation queries the response was YES. Maximal size of possible extension queue 493. Compared 421723 event pairs, 4963 based on Foata normal form. 132/60345 useless extension candidates. Maximal degree in co-relation 273438. Up to 13087 conditions per place. [2023-08-30 08:25:50,161 INFO L137 encePairwiseOnDemand]: 296/306 looper letters, 670 selfloop transitions, 1366 changer transitions 0/2037 dead transitions. [2023-08-30 08:25:50,161 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 382 places, 2037 transitions, 44227 flow [2023-08-30 08:25:50,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2023-08-30 08:25:50,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2023-08-30 08:25:50,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 5852 transitions. [2023-08-30 08:25:50,166 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4664434879642914 [2023-08-30 08:25:50,166 INFO L72 ComplementDD]: Start complementDD. Operand 41 states and 5852 transitions. [2023-08-30 08:25:50,166 INFO L73 IsDeterministic]: Start isDeterministic. Operand 41 states and 5852 transitions. [2023-08-30 08:25:50,167 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:25:50,168 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 41 states and 5852 transitions. [2023-08-30 08:25:50,174 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 42 states, 41 states have (on average 142.73170731707316) internal successors, (5852), 41 states have internal predecessors, (5852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:25:50,182 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 42 states, 42 states have (on average 306.0) internal successors, (12852), 42 states have internal predecessors, (12852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:25:50,183 INFO L81 ComplementDD]: Finished complementDD. Result has 42 states, 42 states have (on average 306.0) internal successors, (12852), 42 states have internal predecessors, (12852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:25:50,183 INFO L175 Difference]: Start difference. First operand has 342 places, 846 transitions, 19346 flow. Second operand 41 states and 5852 transitions. [2023-08-30 08:25:50,183 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 382 places, 2037 transitions, 44227 flow [2023-08-30 08:25:53,992 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 368 places, 2037 transitions, 41632 flow, removed 992 selfloop flow, removed 14 redundant places. [2023-08-30 08:25:54,019 INFO L231 Difference]: Finished difference. Result has 381 places, 1646 transitions, 39905 flow [2023-08-30 08:25:54,020 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=18358, PETRI_DIFFERENCE_MINUEND_PLACES=328, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=844, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=709, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=41, PETRI_FLOW=39905, PETRI_PLACES=381, PETRI_TRANSITIONS=1646} [2023-08-30 08:25:54,020 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 339 predicate places. [2023-08-30 08:25:54,020 INFO L495 AbstractCegarLoop]: Abstraction has has 381 places, 1646 transitions, 39905 flow [2023-08-30 08:25:54,021 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 137.9142857142857) internal successors, (4827), 35 states have internal predecessors, (4827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:25:54,021 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:25:54,022 INFO L208 CegarLoopForPetriNet]: trace histogram [13, 13, 13, 13, 12, 12, 12, 12, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:25:54,029 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-08-30 08:25:54,229 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2023-08-30 08:25:54,230 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-30 08:25:54,230 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:25:54,230 INFO L85 PathProgramCache]: Analyzing trace with hash 1735374202, now seen corresponding path program 4 times [2023-08-30 08:25:54,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:25:54,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028621455] [2023-08-30 08:25:54,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:25:54,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:25:54,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:25:55,200 INFO L134 CoverageAnalysis]: Checked inductivity of 596 backedges. 0 proven. 580 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-08-30 08:25:55,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:25:55,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028621455] [2023-08-30 08:25:55,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2028621455] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 08:25:55,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [206312126] [2023-08-30 08:25:55,200 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-30 08:25:55,201 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 08:25:55,201 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 08:25:55,205 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 08:25:55,208 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-08-30 08:25:56,160 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-30 08:25:56,161 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 08:25:56,167 INFO L263 TraceCheckSpWp]: Trace formula consists of 916 conjuncts, 31 conjunts are in the unsatisfiable core [2023-08-30 08:25:56,170 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 08:25:56,311 INFO L134 CoverageAnalysis]: Checked inductivity of 596 backedges. 0 proven. 580 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-08-30 08:25:56,311 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 08:25:56,784 INFO L134 CoverageAnalysis]: Checked inductivity of 596 backedges. 0 proven. 580 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-08-30 08:25:56,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [206312126] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 08:25:56,784 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 08:25:56,784 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 23, 23] total 50 [2023-08-30 08:25:56,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840339285] [2023-08-30 08:25:56,784 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 08:25:56,785 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2023-08-30 08:25:56,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:25:56,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2023-08-30 08:25:56,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=611, Invalid=2041, Unknown=0, NotChecked=0, Total=2652 [2023-08-30 08:25:57,056 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 306 [2023-08-30 08:25:57,059 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 381 places, 1646 transitions, 39905 flow. Second operand has 52 states, 52 states have (on average 137.46153846153845) internal successors, (7148), 52 states have internal predecessors, (7148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:25:57,059 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:25:57,059 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 306 [2023-08-30 08:25:57,059 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:26:46,570 INFO L130 PetriNetUnfolder]: 55915/100262 cut-off events. [2023-08-30 08:26:46,570 INFO L131 PetriNetUnfolder]: For 1060206/1060206 co-relation queries the response was YES. [2023-08-30 08:26:48,685 INFO L83 FinitePrefix]: Finished finitePrefix Result has 466443 conditions, 100262 events. 55915/100262 cut-off events. For 1060206/1060206 co-relation queries the response was YES. Maximal size of possible extension queue 799. Compared 766781 event pairs, 9247 based on Foata normal form. 430/100692 useless extension candidates. Maximal degree in co-relation 464079. Up to 21918 conditions per place. [2023-08-30 08:26:49,039 INFO L137 encePairwiseOnDemand]: 296/306 looper letters, 1163 selfloop transitions, 2344 changer transitions 0/3508 dead transitions. [2023-08-30 08:26:49,039 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 444 places, 3508 transitions, 79914 flow [2023-08-30 08:26:49,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2023-08-30 08:26:49,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2023-08-30 08:26:49,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 9172 transitions. [2023-08-30 08:26:49,049 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46834150326797386 [2023-08-30 08:26:49,049 INFO L72 ComplementDD]: Start complementDD. Operand 64 states and 9172 transitions. [2023-08-30 08:26:49,049 INFO L73 IsDeterministic]: Start isDeterministic. Operand 64 states and 9172 transitions. [2023-08-30 08:26:49,051 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:26:49,051 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 64 states and 9172 transitions. [2023-08-30 08:26:49,060 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 65 states, 64 states have (on average 143.3125) internal successors, (9172), 64 states have internal predecessors, (9172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:26:49,075 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 65 states, 65 states have (on average 306.0) internal successors, (19890), 65 states have internal predecessors, (19890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:26:49,077 INFO L81 ComplementDD]: Finished complementDD. Result has 65 states, 65 states have (on average 306.0) internal successors, (19890), 65 states have internal predecessors, (19890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:26:49,077 INFO L175 Difference]: Start difference. First operand has 381 places, 1646 transitions, 39905 flow. Second operand 64 states and 9172 transitions. [2023-08-30 08:26:49,077 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 444 places, 3508 transitions, 79914 flow [2023-08-30 08:27:00,497 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 433 places, 3508 transitions, 77199 flow, removed 1269 selfloop flow, removed 11 redundant places. [2023-08-30 08:27:00,554 INFO L231 Difference]: Finished difference. Result has 460 places, 2817 transitions, 74685 flow [2023-08-30 08:27:00,555 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=37897, PETRI_DIFFERENCE_MINUEND_PLACES=370, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1625, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1303, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=64, PETRI_FLOW=74685, PETRI_PLACES=460, PETRI_TRANSITIONS=2817} [2023-08-30 08:27:00,555 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 418 predicate places. [2023-08-30 08:27:00,555 INFO L495 AbstractCegarLoop]: Abstraction has has 460 places, 2817 transitions, 74685 flow [2023-08-30 08:27:00,556 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 137.46153846153845) internal successors, (7148), 52 states have internal predecessors, (7148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:27:00,556 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:27:00,556 INFO L208 CegarLoopForPetriNet]: trace histogram [13, 13, 13, 13, 12, 12, 12, 12, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:27:00,563 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-08-30 08:27:00,757 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2023-08-30 08:27:00,757 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-30 08:27:00,757 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:27:00,758 INFO L85 PathProgramCache]: Analyzing trace with hash 979517914, now seen corresponding path program 5 times [2023-08-30 08:27:00,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:27:00,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1318253693] [2023-08-30 08:27:00,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:27:00,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:27:00,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:27:01,688 INFO L134 CoverageAnalysis]: Checked inductivity of 596 backedges. 0 proven. 580 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-08-30 08:27:01,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:27:01,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1318253693] [2023-08-30 08:27:01,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1318253693] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 08:27:01,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [419859375] [2023-08-30 08:27:01,688 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-30 08:27:01,688 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 08:27:01,688 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 08:27:01,693 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 08:27:01,697 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-08-30 08:27:02,228 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2023-08-30 08:27:02,229 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 08:27:02,233 INFO L263 TraceCheckSpWp]: Trace formula consists of 916 conjuncts, 31 conjunts are in the unsatisfiable core [2023-08-30 08:27:02,236 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 08:27:02,384 INFO L134 CoverageAnalysis]: Checked inductivity of 596 backedges. 0 proven. 580 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-08-30 08:27:02,384 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 08:27:02,898 INFO L134 CoverageAnalysis]: Checked inductivity of 596 backedges. 0 proven. 580 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-08-30 08:27:02,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [419859375] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 08:27:02,899 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 08:27:02,899 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 23, 23] total 50 [2023-08-30 08:27:02,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177714918] [2023-08-30 08:27:02,899 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 08:27:02,899 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2023-08-30 08:27:02,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:27:02,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2023-08-30 08:27:02,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=600, Invalid=2052, Unknown=0, NotChecked=0, Total=2652 [2023-08-30 08:27:03,285 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 306 [2023-08-30 08:27:03,288 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 460 places, 2817 transitions, 74685 flow. Second operand has 52 states, 52 states have (on average 137.46153846153845) internal successors, (7148), 52 states have internal predecessors, (7148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:27:03,288 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:27:03,288 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 306 [2023-08-30 08:27:03,288 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:29:03,028 INFO L130 PetriNetUnfolder]: 83695/149958 cut-off events. [2023-08-30 08:29:03,029 INFO L131 PetriNetUnfolder]: For 1772680/1772680 co-relation queries the response was YES. [2023-08-30 08:29:07,432 INFO L83 FinitePrefix]: Finished finitePrefix Result has 728256 conditions, 149958 events. 83695/149958 cut-off events. For 1772680/1772680 co-relation queries the response was YES. Maximal size of possible extension queue 1244. Compared 1229066 event pairs, 10707 based on Foata normal form. 428/150386 useless extension candidates. Maximal degree in co-relation 725732. Up to 32876 conditions per place. [2023-08-30 08:29:07,986 INFO L137 encePairwiseOnDemand]: 296/306 looper letters, 1370 selfloop transitions, 3645 changer transitions 0/5016 dead transitions. [2023-08-30 08:29:07,986 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 529 places, 5016 transitions, 128780 flow [2023-08-30 08:29:07,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2023-08-30 08:29:07,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2023-08-30 08:29:07,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 9981 transitions. [2023-08-30 08:29:07,994 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46596638655462186 [2023-08-30 08:29:07,994 INFO L72 ComplementDD]: Start complementDD. Operand 70 states and 9981 transitions. [2023-08-30 08:29:07,994 INFO L73 IsDeterministic]: Start isDeterministic. Operand 70 states and 9981 transitions. [2023-08-30 08:29:07,996 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:29:07,996 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 70 states and 9981 transitions. [2023-08-30 08:29:08,004 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 71 states, 70 states have (on average 142.5857142857143) internal successors, (9981), 70 states have internal predecessors, (9981), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:29:08,019 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 71 states, 71 states have (on average 306.0) internal successors, (21726), 71 states have internal predecessors, (21726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:29:08,021 INFO L81 ComplementDD]: Finished complementDD. Result has 71 states, 71 states have (on average 306.0) internal successors, (21726), 71 states have internal predecessors, (21726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:29:08,021 INFO L175 Difference]: Start difference. First operand has 460 places, 2817 transitions, 74685 flow. Second operand 70 states and 9981 transitions. [2023-08-30 08:29:08,021 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 529 places, 5016 transitions, 128780 flow [2023-08-30 08:29:40,930 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 520 places, 5016 transitions, 123649 flow, removed 2059 selfloop flow, removed 9 redundant places. [2023-08-30 08:29:41,039 INFO L231 Difference]: Finished difference. Result has 552 places, 4363 transitions, 123808 flow [2023-08-30 08:29:41,042 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=71046, PETRI_DIFFERENCE_MINUEND_PLACES=451, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2795, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2338, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=224, PETRI_DIFFERENCE_SUBTRAHEND_STATES=70, PETRI_FLOW=123808, PETRI_PLACES=552, PETRI_TRANSITIONS=4363} [2023-08-30 08:29:41,043 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 510 predicate places. [2023-08-30 08:29:41,043 INFO L495 AbstractCegarLoop]: Abstraction has has 552 places, 4363 transitions, 123808 flow [2023-08-30 08:29:41,044 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 137.46153846153845) internal successors, (7148), 52 states have internal predecessors, (7148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:29:41,044 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:29:41,044 INFO L208 CegarLoopForPetriNet]: trace histogram [14, 14, 14, 14, 13, 13, 13, 13, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:29:41,053 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-08-30 08:29:41,252 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 08:29:41,252 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-30 08:29:41,253 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:29:41,253 INFO L85 PathProgramCache]: Analyzing trace with hash 2019786691, now seen corresponding path program 6 times [2023-08-30 08:29:41,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:29:41,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485314308] [2023-08-30 08:29:41,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:29:41,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:29:41,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:29:42,407 INFO L134 CoverageAnalysis]: Checked inductivity of 714 backedges. 1 proven. 690 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-08-30 08:29:42,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:29:42,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1485314308] [2023-08-30 08:29:42,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1485314308] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 08:29:42,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [886157760] [2023-08-30 08:29:42,408 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-30 08:29:42,408 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 08:29:42,408 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 08:29:42,409 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 08:29:42,413 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-08-30 08:29:46,988 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 14 check-sat command(s) [2023-08-30 08:29:46,988 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 08:29:46,999 INFO L263 TraceCheckSpWp]: Trace formula consists of 1014 conjuncts, 35 conjunts are in the unsatisfiable core [2023-08-30 08:29:47,002 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 08:29:47,165 INFO L134 CoverageAnalysis]: Checked inductivity of 714 backedges. 0 proven. 690 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-08-30 08:29:47,165 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 08:29:47,707 INFO L134 CoverageAnalysis]: Checked inductivity of 714 backedges. 0 proven. 690 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-08-30 08:29:47,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [886157760] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 08:29:47,707 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 08:29:47,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 24, 24] total 53 [2023-08-30 08:29:47,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889897749] [2023-08-30 08:29:47,708 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 08:29:47,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2023-08-30 08:29:47,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:29:47,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2023-08-30 08:29:47,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=640, Invalid=2330, Unknown=0, NotChecked=0, Total=2970 [2023-08-30 08:29:47,985 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 306 [2023-08-30 08:29:47,989 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 552 places, 4363 transitions, 123808 flow. Second operand has 55 states, 55 states have (on average 137.6) internal successors, (7568), 55 states have internal predecessors, (7568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:29:47,989 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:29:47,989 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 306 [2023-08-30 08:29:47,989 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:34:33,440 INFO L130 PetriNetUnfolder]: 119584/214365 cut-off events. [2023-08-30 08:34:33,441 INFO L131 PetriNetUnfolder]: For 2851648/2851648 co-relation queries the response was YES. [2023-08-30 08:34:40,871 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1075275 conditions, 214365 events. 119584/214365 cut-off events. For 2851648/2851648 co-relation queries the response was YES. Maximal size of possible extension queue 1673. Compared 1841799 event pairs, 13193 based on Foata normal form. 760/215125 useless extension candidates. Maximal degree in co-relation 1072662. Up to 47135 conditions per place. [2023-08-30 08:34:41,808 INFO L137 encePairwiseOnDemand]: 296/306 looper letters, 895 selfloop transitions, 6187 changer transitions 0/7083 dead transitions. [2023-08-30 08:34:41,808 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 621 places, 7083 transitions, 198031 flow [2023-08-30 08:34:41,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2023-08-30 08:34:41,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2023-08-30 08:34:41,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 9990 transitions. [2023-08-30 08:34:41,814 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46638655462184875 [2023-08-30 08:34:41,815 INFO L72 ComplementDD]: Start complementDD. Operand 70 states and 9990 transitions. [2023-08-30 08:34:41,815 INFO L73 IsDeterministic]: Start isDeterministic. Operand 70 states and 9990 transitions. [2023-08-30 08:34:41,816 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:34:41,817 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 70 states and 9990 transitions. [2023-08-30 08:34:41,824 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 71 states, 70 states have (on average 142.71428571428572) internal successors, (9990), 70 states have internal predecessors, (9990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:34:41,837 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 71 states, 71 states have (on average 306.0) internal successors, (21726), 71 states have internal predecessors, (21726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:34:41,839 INFO L81 ComplementDD]: Finished complementDD. Result has 71 states, 71 states have (on average 306.0) internal successors, (21726), 71 states have internal predecessors, (21726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:34:41,840 INFO L175 Difference]: Start difference. First operand has 552 places, 4363 transitions, 123808 flow. Second operand 70 states and 9990 transitions. [2023-08-30 08:34:41,840 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 621 places, 7083 transitions, 198031 flow [2023-08-30 08:36:11,632 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 601 places, 7083 transitions, 190177 flow, removed 3304 selfloop flow, removed 20 redundant places. [2023-08-30 08:36:11,778 INFO L231 Difference]: Finished difference. Result has 620 places, 6428 transitions, 191619 flow [2023-08-30 08:36:11,781 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=117297, PETRI_DIFFERENCE_MINUEND_PLACES=532, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=4319, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4231, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=70, PETRI_FLOW=191619, PETRI_PLACES=620, PETRI_TRANSITIONS=6428} [2023-08-30 08:36:11,782 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 578 predicate places. [2023-08-30 08:36:11,782 INFO L495 AbstractCegarLoop]: Abstraction has has 620 places, 6428 transitions, 191619 flow [2023-08-30 08:36:11,783 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 137.6) internal successors, (7568), 55 states have internal predecessors, (7568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:36:11,783 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:36:11,783 INFO L208 CegarLoopForPetriNet]: trace histogram [17, 17, 17, 17, 16, 16, 16, 16, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:36:11,792 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-08-30 08:36:11,983 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-08-30 08:36:11,984 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-30 08:36:11,984 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:36:11,984 INFO L85 PathProgramCache]: Analyzing trace with hash 1060970528, now seen corresponding path program 7 times [2023-08-30 08:36:11,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:36:11,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1161945195] [2023-08-30 08:36:11,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:36:11,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:36:12,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:36:13,496 INFO L134 CoverageAnalysis]: Checked inductivity of 1065 backedges. 0 proven. 1041 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-08-30 08:36:13,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:36:13,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1161945195] [2023-08-30 08:36:13,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1161945195] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 08:36:13,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1465715899] [2023-08-30 08:36:13,496 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-30 08:36:13,496 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 08:36:13,497 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 08:36:13,501 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 08:36:13,504 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-08-30 08:36:13,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:36:13,823 INFO L263 TraceCheckSpWp]: Trace formula consists of 1182 conjuncts, 41 conjunts are in the unsatisfiable core [2023-08-30 08:36:13,827 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 08:36:14,050 INFO L134 CoverageAnalysis]: Checked inductivity of 1065 backedges. 0 proven. 1041 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-08-30 08:36:14,050 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 08:36:14,789 INFO L134 CoverageAnalysis]: Checked inductivity of 1065 backedges. 0 proven. 1041 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-08-30 08:36:14,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1465715899] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 08:36:14,790 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 08:36:14,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 30, 30] total 65 [2023-08-30 08:36:14,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581919745] [2023-08-30 08:36:14,790 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 08:36:14,790 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 67 states [2023-08-30 08:36:14,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:36:14,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2023-08-30 08:36:14,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=978, Invalid=3444, Unknown=0, NotChecked=0, Total=4422 [2023-08-30 08:36:15,091 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 306 [2023-08-30 08:36:15,095 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 620 places, 6428 transitions, 191619 flow. Second operand has 67 states, 67 states have (on average 137.47761194029852) internal successors, (9211), 67 states have internal predecessors, (9211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:36:15,095 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:36:15,095 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 306 [2023-08-30 08:36:15,095 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand Killed by 15