./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_73-funloop_hard_racefree.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_73-funloop_hard_racefree.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c8af2e9e80aefb6a93651d6c869df13510f679bd9566c8571973545c9393aab5 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-30 14:19:10,444 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 14:19:10,446 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 14:19:10,482 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 14:19:10,483 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 14:19:10,492 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 14:19:10,493 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 14:19:10,496 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 14:19:10,498 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 14:19:10,501 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 14:19:10,502 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 14:19:10,504 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 14:19:10,504 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 14:19:10,508 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 14:19:10,509 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 14:19:10,510 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 14:19:10,511 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 14:19:10,512 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 14:19:10,515 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 14:19:10,517 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 14:19:10,520 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 14:19:10,523 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 14:19:10,524 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 14:19:10,524 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 14:19:10,529 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 14:19:10,532 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 14:19:10,533 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 14:19:10,534 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 14:19:10,535 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 14:19:10,536 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 14:19:10,539 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 14:19:10,539 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 14:19:10,540 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 14:19:10,541 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 14:19:10,542 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 14:19:10,543 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 14:19:10,543 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 14:19:10,544 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 14:19:10,544 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 14:19:10,545 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 14:19:10,545 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 14:19:10,549 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-08-30 14:19:10,577 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 14:19:10,577 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 14:19:10,578 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 14:19:10,579 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 14:19:10,579 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 14:19:10,580 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 14:19:10,580 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 14:19:10,580 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 14:19:10,581 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 14:19:10,581 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 14:19:10,581 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 14:19:10,582 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 14:19:10,582 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 14:19:10,582 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 14:19:10,582 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 14:19:10,582 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 14:19:10,583 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 14:19:10,583 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 14:19:10,583 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-08-30 14:19:10,583 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 14:19:10,583 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 14:19:10,583 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 14:19:10,584 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 14:19:10,584 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 14:19:10,584 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 14:19:10,584 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 14:19:10,584 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 14:19:10,585 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 14:19:10,585 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 14:19:10,585 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 14:19:10,585 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 14:19:10,585 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 14:19:10,585 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 14:19:10,586 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 14:19:10,586 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 14:19:10,586 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 14:19:10,586 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 14:19:10,586 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c8af2e9e80aefb6a93651d6c869df13510f679bd9566c8571973545c9393aab5 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-30 14:19:10,902 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 14:19:10,923 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 14:19:10,926 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 14:19:10,927 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 14:19:10,928 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 14:19:10,929 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_73-funloop_hard_racefree.i [2023-08-30 14:19:12,188 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 14:19:12,437 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 14:19:12,437 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_73-funloop_hard_racefree.i [2023-08-30 14:19:12,451 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4be0be40e/ab9e59ed3c414f4e951de540e9e08b3c/FLAGaeb294eb7 [2023-08-30 14:19:12,463 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4be0be40e/ab9e59ed3c414f4e951de540e9e08b3c [2023-08-30 14:19:12,465 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 14:19:12,466 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 14:19:12,467 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 14:19:12,467 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 14:19:12,470 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 14:19:12,470 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 02:19:12" (1/1) ... [2023-08-30 14:19:12,471 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@70311b01 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:19:12, skipping insertion in model container [2023-08-30 14:19:12,471 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 02:19:12" (1/1) ... [2023-08-30 14:19:12,477 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 14:19:12,518 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 14:19:12,804 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_73-funloop_hard_racefree.i[41323,41336] [2023-08-30 14:19:12,846 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 14:19:12,864 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 14:19:12,894 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_73-funloop_hard_racefree.i[41323,41336] [2023-08-30 14:19:12,903 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 14:19:12,954 INFO L208 MainTranslator]: Completed translation [2023-08-30 14:19:12,954 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:19:12 WrapperNode [2023-08-30 14:19:12,954 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 14:19:12,955 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 14:19:12,955 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 14:19:12,956 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 14:19:12,961 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:19:12" (1/1) ... [2023-08-30 14:19:12,976 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:19:12" (1/1) ... [2023-08-30 14:19:13,002 INFO L138 Inliner]: procedures = 271, calls = 41, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 272 [2023-08-30 14:19:13,003 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 14:19:13,003 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 14:19:13,004 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 14:19:13,004 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 14:19:13,011 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:19:12" (1/1) ... [2023-08-30 14:19:13,012 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:19:12" (1/1) ... [2023-08-30 14:19:13,015 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:19:12" (1/1) ... [2023-08-30 14:19:13,016 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:19:12" (1/1) ... [2023-08-30 14:19:13,023 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:19:12" (1/1) ... [2023-08-30 14:19:13,028 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:19:12" (1/1) ... [2023-08-30 14:19:13,031 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:19:12" (1/1) ... [2023-08-30 14:19:13,032 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:19:12" (1/1) ... [2023-08-30 14:19:13,035 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 14:19:13,036 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 14:19:13,036 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 14:19:13,037 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 14:19:13,037 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:19:12" (1/1) ... [2023-08-30 14:19:13,043 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 14:19:13,055 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:19:13,069 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-30 14:19:13,071 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-30 14:19:13,110 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 14:19:13,110 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 14:19:13,111 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 14:19:13,112 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 14:19:13,112 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-30 14:19:13,112 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 14:19:13,112 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-30 14:19:13,112 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-30 14:19:13,112 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 14:19:13,112 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 14:19:13,113 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 14:19:13,114 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-30 14:19:13,294 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 14:19:13,307 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 14:19:13,645 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 14:19:13,654 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 14:19:13,655 INFO L302 CfgBuilder]: Removed 35 assume(true) statements. [2023-08-30 14:19:13,656 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 02:19:13 BoogieIcfgContainer [2023-08-30 14:19:13,657 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 14:19:13,658 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 14:19:13,659 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 14:19:13,662 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 14:19:13,662 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 02:19:12" (1/3) ... [2023-08-30 14:19:13,663 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1553510d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 02:19:13, skipping insertion in model container [2023-08-30 14:19:13,663 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:19:12" (2/3) ... [2023-08-30 14:19:13,663 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1553510d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 02:19:13, skipping insertion in model container [2023-08-30 14:19:13,663 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 02:19:13" (3/3) ... [2023-08-30 14:19:13,664 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_73-funloop_hard_racefree.i [2023-08-30 14:19:13,672 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 14:19:13,680 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 14:19:13,681 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 22 error locations. [2023-08-30 14:19:13,681 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 14:19:13,755 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-08-30 14:19:13,786 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 245 places, 287 transitions, 582 flow [2023-08-30 14:19:13,923 INFO L130 PetriNetUnfolder]: 73/440 cut-off events. [2023-08-30 14:19:13,923 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 14:19:13,934 INFO L83 FinitePrefix]: Finished finitePrefix Result has 446 conditions, 440 events. 73/440 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 2094 event pairs, 0 based on Foata normal form. 0/332 useless extension candidates. Maximal degree in co-relation 242. Up to 8 conditions per place. [2023-08-30 14:19:13,934 INFO L82 GeneralOperation]: Start removeDead. Operand has 245 places, 287 transitions, 582 flow [2023-08-30 14:19:13,950 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 243 places, 284 transitions, 576 flow [2023-08-30 14:19:13,953 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 14:19:13,961 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 243 places, 284 transitions, 576 flow [2023-08-30 14:19:13,964 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 243 places, 284 transitions, 576 flow [2023-08-30 14:19:13,964 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 243 places, 284 transitions, 576 flow [2023-08-30 14:19:14,022 INFO L130 PetriNetUnfolder]: 72/437 cut-off events. [2023-08-30 14:19:14,022 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 14:19:14,025 INFO L83 FinitePrefix]: Finished finitePrefix Result has 443 conditions, 437 events. 72/437 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 2079 event pairs, 0 based on Foata normal form. 0/330 useless extension candidates. Maximal degree in co-relation 242. Up to 8 conditions per place. [2023-08-30 14:19:14,036 INFO L119 LiptonReduction]: Number of co-enabled transitions 26080 [2023-08-30 14:19:17,591 INFO L134 LiptonReduction]: Checked pairs total: 39972 [2023-08-30 14:19:17,592 INFO L136 LiptonReduction]: Total number of compositions: 244 [2023-08-30 14:19:17,605 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 14:19:17,610 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;@5d1c53bd, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 14:19:17,611 INFO L358 AbstractCegarLoop]: Starting to check reachability of 29 error locations. [2023-08-30 14:19:17,613 INFO L130 PetriNetUnfolder]: 1/3 cut-off events. [2023-08-30 14:19:17,613 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 14:19:17,613 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:19:17,614 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-30 14:19:17,614 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2023-08-30 14:19:17,618 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:19:17,619 INFO L85 PathProgramCache]: Analyzing trace with hash 35433, now seen corresponding path program 1 times [2023-08-30 14:19:17,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:19:17,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1092371430] [2023-08-30 14:19:17,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:19:17,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:19:17,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:19:17,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 14:19:17,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:19:17,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1092371430] [2023-08-30 14:19:17,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1092371430] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:19:17,823 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:19:17,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 14:19:17,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542817920] [2023-08-30 14:19:17,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:19:17,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:19:17,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:19:17,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:19:17,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:19:17,885 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 240 out of 531 [2023-08-30 14:19:17,891 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 119 transitions, 246 flow. Second operand has 3 states, 3 states have (on average 240.66666666666666) internal successors, (722), 3 states have internal predecessors, (722), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:19:17,891 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:19:17,891 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 240 of 531 [2023-08-30 14:19:17,892 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:19:18,184 INFO L130 PetriNetUnfolder]: 1055/2188 cut-off events. [2023-08-30 14:19:18,185 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 14:19:18,190 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4181 conditions, 2188 events. 1055/2188 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 14595 event pairs, 903 based on Foata normal form. 289/1785 useless extension candidates. Maximal degree in co-relation 4065. Up to 1986 conditions per place. [2023-08-30 14:19:18,201 INFO L137 encePairwiseOnDemand]: 495/531 looper letters, 73 selfloop transitions, 2 changer transitions 0/88 dead transitions. [2023-08-30 14:19:18,201 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 88 transitions, 334 flow [2023-08-30 14:19:18,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:19:18,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:19:18,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 830 transitions. [2023-08-30 14:19:18,217 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5210295040803515 [2023-08-30 14:19:18,218 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 830 transitions. [2023-08-30 14:19:18,219 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 830 transitions. [2023-08-30 14:19:18,221 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:19:18,227 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 830 transitions. [2023-08-30 14:19:18,233 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 276.6666666666667) internal successors, (830), 3 states have internal predecessors, (830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:19:18,242 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 531.0) internal successors, (2124), 4 states have internal predecessors, (2124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:19:18,243 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 531.0) internal successors, (2124), 4 states have internal predecessors, (2124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:19:18,245 INFO L175 Difference]: Start difference. First operand has 85 places, 119 transitions, 246 flow. Second operand 3 states and 830 transitions. [2023-08-30 14:19:18,246 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 88 transitions, 334 flow [2023-08-30 14:19:18,249 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 88 transitions, 334 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 14:19:18,252 INFO L231 Difference]: Finished difference. Result has 87 places, 88 transitions, 196 flow [2023-08-30 14:19:18,254 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=531, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=196, PETRI_PLACES=87, PETRI_TRANSITIONS=88} [2023-08-30 14:19:18,257 INFO L281 CegarLoopForPetriNet]: 85 programPoint places, 2 predicate places. [2023-08-30 14:19:18,258 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 88 transitions, 196 flow [2023-08-30 14:19:18,259 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 240.66666666666666) internal successors, (722), 3 states have internal predecessors, (722), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:19:18,259 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:19:18,259 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 14:19:18,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 14:19:18,260 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2023-08-30 14:19:18,260 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:19:18,260 INFO L85 PathProgramCache]: Analyzing trace with hash 1100841, now seen corresponding path program 1 times [2023-08-30 14:19:18,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:19:18,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862578394] [2023-08-30 14:19:18,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:19:18,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:19:18,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:19:18,341 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 14:19:18,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:19:18,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862578394] [2023-08-30 14:19:18,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1862578394] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:19:18,343 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:19:18,347 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 14:19:18,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090182017] [2023-08-30 14:19:18,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:19:18,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:19:18,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:19:18,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:19:18,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:19:18,364 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 240 out of 531 [2023-08-30 14:19:18,366 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 88 transitions, 196 flow. Second operand has 3 states, 3 states have (on average 241.0) internal successors, (723), 3 states have internal predecessors, (723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:19:18,366 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:19:18,366 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 240 of 531 [2023-08-30 14:19:18,366 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:19:18,609 INFO L130 PetriNetUnfolder]: 1055/2187 cut-off events. [2023-08-30 14:19:18,609 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 14:19:18,612 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4186 conditions, 2187 events. 1055/2187 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 14616 event pairs, 903 based on Foata normal form. 0/1496 useless extension candidates. Maximal degree in co-relation 4174. Up to 1985 conditions per place. [2023-08-30 14:19:18,619 INFO L137 encePairwiseOnDemand]: 529/531 looper letters, 73 selfloop transitions, 1 changer transitions 0/87 dead transitions. [2023-08-30 14:19:18,619 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 87 transitions, 340 flow [2023-08-30 14:19:18,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:19:18,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:19:18,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 794 transitions. [2023-08-30 14:19:18,621 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49843063402385435 [2023-08-30 14:19:18,622 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 794 transitions. [2023-08-30 14:19:18,622 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 794 transitions. [2023-08-30 14:19:18,623 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:19:18,623 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 794 transitions. [2023-08-30 14:19:18,625 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 264.6666666666667) internal successors, (794), 3 states have internal predecessors, (794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:19:18,627 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 531.0) internal successors, (2124), 4 states have internal predecessors, (2124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:19:18,629 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 531.0) internal successors, (2124), 4 states have internal predecessors, (2124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:19:18,629 INFO L175 Difference]: Start difference. First operand has 87 places, 88 transitions, 196 flow. Second operand 3 states and 794 transitions. [2023-08-30 14:19:18,629 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 87 transitions, 340 flow [2023-08-30 14:19:18,632 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 87 transitions, 336 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-30 14:19:18,634 INFO L231 Difference]: Finished difference. Result has 87 places, 87 transitions, 190 flow [2023-08-30 14:19:18,634 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=531, PETRI_DIFFERENCE_MINUEND_FLOW=188, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=190, PETRI_PLACES=87, PETRI_TRANSITIONS=87} [2023-08-30 14:19:18,635 INFO L281 CegarLoopForPetriNet]: 85 programPoint places, 2 predicate places. [2023-08-30 14:19:18,635 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 87 transitions, 190 flow [2023-08-30 14:19:18,636 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 241.0) internal successors, (723), 3 states have internal predecessors, (723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:19:18,636 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:19:18,636 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-30 14:19:18,636 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 14:19:18,636 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2023-08-30 14:19:18,639 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:19:18,639 INFO L85 PathProgramCache]: Analyzing trace with hash -1563346380, now seen corresponding path program 1 times [2023-08-30 14:19:18,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:19:18,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19602461] [2023-08-30 14:19:18,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:19:18,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:19:18,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:19:18,716 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 14:19:18,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:19:18,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19602461] [2023-08-30 14:19:18,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [19602461] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 14:19:18,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [326630915] [2023-08-30 14:19:18,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:19:18,718 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:19:18,718 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:19:18,721 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 14:19:18,755 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-30 14:19:18,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:19:18,822 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-30 14:19:18,826 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 14:19:18,853 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 14:19:18,853 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 14:19:18,868 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 14:19:18,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [326630915] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 14:19:18,868 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 14:19:18,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-30 14:19:18,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773138796] [2023-08-30 14:19:18,869 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 14:19:18,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 14:19:18,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:19:18,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 14:19:18,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-30 14:19:18,904 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 239 out of 531 [2023-08-30 14:19:18,906 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 87 transitions, 190 flow. Second operand has 7 states, 7 states have (on average 240.57142857142858) internal successors, (1684), 7 states have internal predecessors, (1684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:19:18,906 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:19:18,906 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 239 of 531 [2023-08-30 14:19:18,906 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:19:19,201 INFO L130 PetriNetUnfolder]: 1055/2190 cut-off events. [2023-08-30 14:19:19,201 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 14:19:19,203 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4194 conditions, 2190 events. 1055/2190 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 14611 event pairs, 903 based on Foata normal form. 0/1499 useless extension candidates. Maximal degree in co-relation 4185. Up to 1985 conditions per place. [2023-08-30 14:19:19,211 INFO L137 encePairwiseOnDemand]: 528/531 looper letters, 72 selfloop transitions, 5 changer transitions 0/90 dead transitions. [2023-08-30 14:19:19,212 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 90 transitions, 356 flow [2023-08-30 14:19:19,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 14:19:19,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 14:19:19,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1514 transitions. [2023-08-30 14:19:19,216 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47520401757689895 [2023-08-30 14:19:19,216 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1514 transitions. [2023-08-30 14:19:19,216 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1514 transitions. [2023-08-30 14:19:19,217 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:19:19,217 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1514 transitions. [2023-08-30 14:19:19,220 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 252.33333333333334) internal successors, (1514), 6 states have internal predecessors, (1514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:19:19,225 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 531.0) internal successors, (3717), 7 states have internal predecessors, (3717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:19:19,227 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 531.0) internal successors, (3717), 7 states have internal predecessors, (3717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:19:19,228 INFO L175 Difference]: Start difference. First operand has 87 places, 87 transitions, 190 flow. Second operand 6 states and 1514 transitions. [2023-08-30 14:19:19,228 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 90 transitions, 356 flow [2023-08-30 14:19:19,229 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 90 transitions, 355 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 14:19:19,230 INFO L231 Difference]: Finished difference. Result has 94 places, 90 transitions, 225 flow [2023-08-30 14:19:19,231 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=531, PETRI_DIFFERENCE_MINUEND_FLOW=189, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=225, PETRI_PLACES=94, PETRI_TRANSITIONS=90} [2023-08-30 14:19:19,231 INFO L281 CegarLoopForPetriNet]: 85 programPoint places, 9 predicate places. [2023-08-30 14:19:19,232 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 90 transitions, 225 flow [2023-08-30 14:19:19,233 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 240.57142857142858) internal successors, (1684), 7 states have internal predecessors, (1684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:19:19,233 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:19:19,233 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1] [2023-08-30 14:19:19,243 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-30 14:19:19,443 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:19:19,443 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2023-08-30 14:19:19,444 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:19:19,444 INFO L85 PathProgramCache]: Analyzing trace with hash 1271227380, now seen corresponding path program 2 times [2023-08-30 14:19:19,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:19:19,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108221926] [2023-08-30 14:19:19,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:19:19,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:19:19,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:19:19,493 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-30 14:19:19,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:19:19,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108221926] [2023-08-30 14:19:19,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1108221926] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:19:19,494 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:19:19,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 14:19:19,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400722774] [2023-08-30 14:19:19,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:19:19,495 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:19:19,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:19:19,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:19:19,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:19:19,507 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 240 out of 531 [2023-08-30 14:19:19,508 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 90 transitions, 225 flow. Second operand has 3 states, 3 states have (on average 242.0) internal successors, (726), 3 states have internal predecessors, (726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:19:19,508 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:19:19,508 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 240 of 531 [2023-08-30 14:19:19,509 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:19:19,761 INFO L130 PetriNetUnfolder]: 1010/2088 cut-off events. [2023-08-30 14:19:19,762 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-30 14:19:19,765 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3993 conditions, 2088 events. 1010/2088 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 14139 event pairs, 400 based on Foata normal form. 0/1479 useless extension candidates. Maximal degree in co-relation 3980. Up to 1836 conditions per place. [2023-08-30 14:19:19,774 INFO L137 encePairwiseOnDemand]: 526/531 looper letters, 96 selfloop transitions, 2 changer transitions 0/111 dead transitions. [2023-08-30 14:19:19,774 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 111 transitions, 463 flow [2023-08-30 14:19:19,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:19:19,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:19:19,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 817 transitions. [2023-08-30 14:19:19,777 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5128688010043942 [2023-08-30 14:19:19,777 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 817 transitions. [2023-08-30 14:19:19,777 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 817 transitions. [2023-08-30 14:19:19,778 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:19:19,778 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 817 transitions. [2023-08-30 14:19:19,779 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 272.3333333333333) internal successors, (817), 3 states have internal predecessors, (817), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:19:19,782 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 531.0) internal successors, (2124), 4 states have internal predecessors, (2124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:19:19,783 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 531.0) internal successors, (2124), 4 states have internal predecessors, (2124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:19:19,783 INFO L175 Difference]: Start difference. First operand has 94 places, 90 transitions, 225 flow. Second operand 3 states and 817 transitions. [2023-08-30 14:19:19,784 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 111 transitions, 463 flow [2023-08-30 14:19:19,786 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 111 transitions, 449 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-08-30 14:19:19,787 INFO L231 Difference]: Finished difference. Result has 94 places, 88 transitions, 215 flow [2023-08-30 14:19:19,788 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=531, PETRI_DIFFERENCE_MINUEND_FLOW=207, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=215, PETRI_PLACES=94, PETRI_TRANSITIONS=88} [2023-08-30 14:19:19,788 INFO L281 CegarLoopForPetriNet]: 85 programPoint places, 9 predicate places. [2023-08-30 14:19:19,789 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 88 transitions, 215 flow [2023-08-30 14:19:19,789 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 242.0) internal successors, (726), 3 states have internal predecessors, (726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:19:19,789 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:19:19,789 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1] [2023-08-30 14:19:19,790 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-30 14:19:19,790 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2023-08-30 14:19:19,790 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:19:19,790 INFO L85 PathProgramCache]: Analyzing trace with hash 1878863073, now seen corresponding path program 1 times [2023-08-30 14:19:19,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:19:19,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162611915] [2023-08-30 14:19:19,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:19:19,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:19:19,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:19:19,898 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 14:19:19,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:19:19,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1162611915] [2023-08-30 14:19:19,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1162611915] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 14:19:19,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1890738320] [2023-08-30 14:19:19,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:19:19,903 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:19:19,903 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:19:19,905 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 14:19:19,912 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 14:19:19,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:19:19,978 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 14:19:19,979 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 14:19:20,000 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 14:19:20,000 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 14:19:20,055 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 14:19:20,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1890738320] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 14:19:20,056 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 14:19:20,056 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-08-30 14:19:20,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033826495] [2023-08-30 14:19:20,056 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 14:19:20,057 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-30 14:19:20,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:19:20,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-30 14:19:20,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-08-30 14:19:20,091 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 239 out of 531 [2023-08-30 14:19:20,095 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 88 transitions, 215 flow. Second operand has 13 states, 13 states have (on average 240.30769230769232) internal successors, (3124), 13 states have internal predecessors, (3124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:19:20,096 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:19:20,096 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 239 of 531 [2023-08-30 14:19:20,096 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:19:20,347 INFO L130 PetriNetUnfolder]: 1010/2064 cut-off events. [2023-08-30 14:19:20,347 INFO L131 PetriNetUnfolder]: For 119/119 co-relation queries the response was YES. [2023-08-30 14:19:20,350 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4035 conditions, 2064 events. 1010/2064 cut-off events. For 119/119 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 13469 event pairs, 861 based on Foata normal form. 6/1475 useless extension candidates. Maximal degree in co-relation 4021. Up to 1857 conditions per place. [2023-08-30 14:19:20,358 INFO L137 encePairwiseOnDemand]: 528/531 looper letters, 70 selfloop transitions, 11 changer transitions 0/94 dead transitions. [2023-08-30 14:19:20,359 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 94 transitions, 413 flow [2023-08-30 14:19:20,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-30 14:19:20,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-30 14:19:20,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2955 transitions. [2023-08-30 14:19:20,366 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4637476459510358 [2023-08-30 14:19:20,366 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2955 transitions. [2023-08-30 14:19:20,366 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2955 transitions. [2023-08-30 14:19:20,368 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:19:20,368 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2955 transitions. [2023-08-30 14:19:20,374 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 246.25) internal successors, (2955), 12 states have internal predecessors, (2955), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:19:20,382 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 531.0) internal successors, (6903), 13 states have internal predecessors, (6903), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:19:20,386 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 531.0) internal successors, (6903), 13 states have internal predecessors, (6903), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:19:20,386 INFO L175 Difference]: Start difference. First operand has 94 places, 88 transitions, 215 flow. Second operand 12 states and 2955 transitions. [2023-08-30 14:19:20,386 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 94 transitions, 413 flow [2023-08-30 14:19:20,390 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 94 transitions, 409 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 14:19:20,391 INFO L231 Difference]: Finished difference. Result has 109 places, 94 transitions, 295 flow [2023-08-30 14:19:20,392 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=531, PETRI_DIFFERENCE_MINUEND_FLOW=211, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=295, PETRI_PLACES=109, PETRI_TRANSITIONS=94} [2023-08-30 14:19:20,394 INFO L281 CegarLoopForPetriNet]: 85 programPoint places, 24 predicate places. [2023-08-30 14:19:20,394 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 94 transitions, 295 flow [2023-08-30 14:19:20,395 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 240.30769230769232) internal successors, (3124), 13 states have internal predecessors, (3124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:19:20,396 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:19:20,396 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 1, 1, 1, 1, 1] [2023-08-30 14:19:20,405 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-30 14:19:20,601 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:19:20,601 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2023-08-30 14:19:20,602 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:19:20,602 INFO L85 PathProgramCache]: Analyzing trace with hash 468419809, now seen corresponding path program 2 times [2023-08-30 14:19:20,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:19:20,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1750563662] [2023-08-30 14:19:20,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:19:20,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:19:20,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 14:19:20,644 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-30 14:19:20,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 14:19:20,693 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-30 14:19:20,694 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-30 14:19:20,695 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (28 of 29 remaining) [2023-08-30 14:19:20,696 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (27 of 29 remaining) [2023-08-30 14:19:20,696 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (26 of 29 remaining) [2023-08-30 14:19:20,697 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (25 of 29 remaining) [2023-08-30 14:19:20,697 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 29 remaining) [2023-08-30 14:19:20,697 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 29 remaining) [2023-08-30 14:19:20,697 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 29 remaining) [2023-08-30 14:19:20,697 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 29 remaining) [2023-08-30 14:19:20,697 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 29 remaining) [2023-08-30 14:19:20,698 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 29 remaining) [2023-08-30 14:19:20,698 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 29 remaining) [2023-08-30 14:19:20,700 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 29 remaining) [2023-08-30 14:19:20,700 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 29 remaining) [2023-08-30 14:19:20,701 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 29 remaining) [2023-08-30 14:19:20,701 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 29 remaining) [2023-08-30 14:19:20,701 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 29 remaining) [2023-08-30 14:19:20,701 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 29 remaining) [2023-08-30 14:19:20,701 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 29 remaining) [2023-08-30 14:19:20,701 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 29 remaining) [2023-08-30 14:19:20,702 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 29 remaining) [2023-08-30 14:19:20,702 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 29 remaining) [2023-08-30 14:19:20,703 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 29 remaining) [2023-08-30 14:19:20,703 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 29 remaining) [2023-08-30 14:19:20,704 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 29 remaining) [2023-08-30 14:19:20,704 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 29 remaining) [2023-08-30 14:19:20,704 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 29 remaining) [2023-08-30 14:19:20,704 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 29 remaining) [2023-08-30 14:19:20,704 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 29 remaining) [2023-08-30 14:19:20,705 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 29 remaining) [2023-08-30 14:19:20,705 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-30 14:19:20,705 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1] [2023-08-30 14:19:20,707 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-30 14:19:20,707 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-30 14:19:20,754 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-30 14:19:20,761 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 314 places, 369 transitions, 756 flow [2023-08-30 14:19:20,838 INFO L130 PetriNetUnfolder]: 118/711 cut-off events. [2023-08-30 14:19:20,839 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-08-30 14:19:20,849 INFO L83 FinitePrefix]: Finished finitePrefix Result has 725 conditions, 711 events. 118/711 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 3792 event pairs, 0 based on Foata normal form. 0/535 useless extension candidates. Maximal degree in co-relation 442. Up to 12 conditions per place. [2023-08-30 14:19:20,849 INFO L82 GeneralOperation]: Start removeDead. Operand has 314 places, 369 transitions, 756 flow [2023-08-30 14:19:20,860 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 314 places, 369 transitions, 756 flow [2023-08-30 14:19:20,860 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 14:19:20,861 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 314 places, 369 transitions, 756 flow [2023-08-30 14:19:20,861 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 314 places, 369 transitions, 756 flow [2023-08-30 14:19:20,861 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 314 places, 369 transitions, 756 flow [2023-08-30 14:19:20,933 INFO L130 PetriNetUnfolder]: 118/711 cut-off events. [2023-08-30 14:19:20,933 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-08-30 14:19:20,943 INFO L83 FinitePrefix]: Finished finitePrefix Result has 725 conditions, 711 events. 118/711 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 3792 event pairs, 0 based on Foata normal form. 0/535 useless extension candidates. Maximal degree in co-relation 442. Up to 12 conditions per place. [2023-08-30 14:19:20,974 INFO L119 LiptonReduction]: Number of co-enabled transitions 68000 [2023-08-30 14:19:24,973 INFO L134 LiptonReduction]: Checked pairs total: 120318 [2023-08-30 14:19:24,973 INFO L136 LiptonReduction]: Total number of compositions: 301 [2023-08-30 14:19:24,975 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 14:19:24,976 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;@5d1c53bd, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 14:19:24,976 INFO L358 AbstractCegarLoop]: Starting to check reachability of 35 error locations. [2023-08-30 14:19:24,977 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2023-08-30 14:19:24,977 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 14:19:24,977 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:19:24,977 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-30 14:19:24,977 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2023-08-30 14:19:24,978 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:19:24,978 INFO L85 PathProgramCache]: Analyzing trace with hash 59469, now seen corresponding path program 1 times [2023-08-30 14:19:24,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:19:24,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313592407] [2023-08-30 14:19:24,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:19:24,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:19:24,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:19:24,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 14:19:24,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:19:24,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [313592407] [2023-08-30 14:19:25,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [313592407] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:19:25,000 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:19:25,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 14:19:25,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201700615] [2023-08-30 14:19:25,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:19:25,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:19:25,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:19:25,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:19:25,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:19:25,010 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 307 out of 670 [2023-08-30 14:19:25,011 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 161 transitions, 340 flow. Second operand has 3 states, 3 states have (on average 307.6666666666667) internal successors, (923), 3 states have internal predecessors, (923), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:19:25,011 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:19:25,011 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 307 of 670 [2023-08-30 14:19:25,011 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:19:29,659 INFO L130 PetriNetUnfolder]: 52323/79072 cut-off events. [2023-08-30 14:19:29,659 INFO L131 PetriNetUnfolder]: For 186/186 co-relation queries the response was YES. [2023-08-30 14:19:29,797 INFO L83 FinitePrefix]: Finished finitePrefix Result has 154709 conditions, 79072 events. 52323/79072 cut-off events. For 186/186 co-relation queries the response was YES. Maximal size of possible extension queue 2607. Compared 612056 event pairs, 47170 based on Foata normal form. 9339/61849 useless extension candidates. Maximal degree in co-relation 72853. Up to 75496 conditions per place. [2023-08-30 14:19:30,422 INFO L137 encePairwiseOnDemand]: 623/670 looper letters, 101 selfloop transitions, 2 changer transitions 0/119 dead transitions. [2023-08-30 14:19:30,422 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 119 transitions, 462 flow [2023-08-30 14:19:30,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:19:30,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:19:30,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1070 transitions. [2023-08-30 14:19:30,427 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5323383084577115 [2023-08-30 14:19:30,428 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1070 transitions. [2023-08-30 14:19:30,428 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1070 transitions. [2023-08-30 14:19:30,428 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:19:30,428 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1070 transitions. [2023-08-30 14:19:30,430 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 356.6666666666667) internal successors, (1070), 3 states have internal predecessors, (1070), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:19:30,434 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 670.0) internal successors, (2680), 4 states have internal predecessors, (2680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:19:30,435 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 670.0) internal successors, (2680), 4 states have internal predecessors, (2680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:19:30,435 INFO L175 Difference]: Start difference. First operand has 114 places, 161 transitions, 340 flow. Second operand 3 states and 1070 transitions. [2023-08-30 14:19:30,435 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 119 transitions, 462 flow [2023-08-30 14:19:30,437 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 119 transitions, 462 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 14:19:30,439 INFO L231 Difference]: Finished difference. Result has 116 places, 119 transitions, 268 flow [2023-08-30 14:19:30,439 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=670, PETRI_DIFFERENCE_MINUEND_FLOW=254, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=268, PETRI_PLACES=116, PETRI_TRANSITIONS=119} [2023-08-30 14:19:30,440 INFO L281 CegarLoopForPetriNet]: 114 programPoint places, 2 predicate places. [2023-08-30 14:19:30,441 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 119 transitions, 268 flow [2023-08-30 14:19:30,441 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 307.6666666666667) internal successors, (923), 3 states have internal predecessors, (923), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:19:30,441 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:19:30,442 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 14:19:30,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-30 14:19:30,442 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2023-08-30 14:19:30,442 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:19:30,443 INFO L85 PathProgramCache]: Analyzing trace with hash 1847425, now seen corresponding path program 1 times [2023-08-30 14:19:30,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:19:30,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662229035] [2023-08-30 14:19:30,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:19:30,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:19:30,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:19:30,479 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 14:19:30,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:19:30,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662229035] [2023-08-30 14:19:30,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1662229035] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 14:19:30,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1232810378] [2023-08-30 14:19:30,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:19:30,480 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:19:30,481 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:19:30,482 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 14:19:30,494 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 14:19:30,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:19:30,550 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 14:19:30,551 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 14:19:30,559 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 14:19:30,560 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 14:19:30,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1232810378] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:19:30,560 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 14:19:30,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2023-08-30 14:19:30,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600491754] [2023-08-30 14:19:30,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:19:30,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 14:19:30,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:19:30,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 14:19:30,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-30 14:19:30,576 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 307 out of 670 [2023-08-30 14:19:30,578 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 119 transitions, 268 flow. Second operand has 4 states, 4 states have (on average 307.75) internal successors, (1231), 4 states have internal predecessors, (1231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:19:30,578 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:19:30,578 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 307 of 670 [2023-08-30 14:19:30,578 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:19:34,716 INFO L130 PetriNetUnfolder]: 52323/79071 cut-off events. [2023-08-30 14:19:34,717 INFO L131 PetriNetUnfolder]: For 186/186 co-relation queries the response was YES. [2023-08-30 14:19:34,843 INFO L83 FinitePrefix]: Finished finitePrefix Result has 154714 conditions, 79071 events. 52323/79071 cut-off events. For 186/186 co-relation queries the response was YES. Maximal size of possible extension queue 2607. Compared 612156 event pairs, 47170 based on Foata normal form. 0/52510 useless extension candidates. Maximal degree in co-relation 154701. Up to 75494 conditions per place. [2023-08-30 14:19:35,128 INFO L137 encePairwiseOnDemand]: 667/670 looper letters, 100 selfloop transitions, 2 changer transitions 0/118 dead transitions. [2023-08-30 14:19:35,129 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 118 transitions, 468 flow [2023-08-30 14:19:35,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 14:19:35,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 14:19:35,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1331 transitions. [2023-08-30 14:19:35,137 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4966417910447761 [2023-08-30 14:19:35,137 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1331 transitions. [2023-08-30 14:19:35,137 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1331 transitions. [2023-08-30 14:19:35,138 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:19:35,138 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1331 transitions. [2023-08-30 14:19:35,140 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 332.75) internal successors, (1331), 4 states have internal predecessors, (1331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:19:35,144 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 670.0) internal successors, (3350), 5 states have internal predecessors, (3350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:19:35,145 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 670.0) internal successors, (3350), 5 states have internal predecessors, (3350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:19:35,145 INFO L175 Difference]: Start difference. First operand has 116 places, 119 transitions, 268 flow. Second operand 4 states and 1331 transitions. [2023-08-30 14:19:35,145 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 118 transitions, 468 flow [2023-08-30 14:19:35,147 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 118 transitions, 464 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-30 14:19:35,148 INFO L231 Difference]: Finished difference. Result has 117 places, 118 transitions, 264 flow [2023-08-30 14:19:35,149 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=670, PETRI_DIFFERENCE_MINUEND_FLOW=260, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=264, PETRI_PLACES=117, PETRI_TRANSITIONS=118} [2023-08-30 14:19:35,150 INFO L281 CegarLoopForPetriNet]: 114 programPoint places, 3 predicate places. [2023-08-30 14:19:35,150 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 118 transitions, 264 flow [2023-08-30 14:19:35,150 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 307.75) internal successors, (1231), 4 states have internal predecessors, (1231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:19:35,151 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:19:35,151 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:19:35,156 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-08-30 14:19:35,356 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:19:35,356 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2023-08-30 14:19:35,356 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:19:35,356 INFO L85 PathProgramCache]: Analyzing trace with hash 1112431339, now seen corresponding path program 1 times [2023-08-30 14:19:35,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:19:35,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940658211] [2023-08-30 14:19:35,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:19:35,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:19:35,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:19:35,395 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 14:19:35,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:19:35,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1940658211] [2023-08-30 14:19:35,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1940658211] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 14:19:35,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1341292276] [2023-08-30 14:19:35,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:19:35,396 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:19:35,397 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:19:35,398 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 14:19:35,400 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 14:19:35,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:19:35,462 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-30 14:19:35,463 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 14:19:35,470 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 14:19:35,470 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 14:19:35,482 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 14:19:35,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1341292276] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 14:19:35,483 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 14:19:35,483 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-30 14:19:35,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515738031] [2023-08-30 14:19:35,483 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 14:19:35,484 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 14:19:35,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:19:35,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 14:19:35,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-30 14:19:35,501 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 306 out of 670 [2023-08-30 14:19:35,503 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 118 transitions, 264 flow. Second operand has 7 states, 7 states have (on average 307.57142857142856) internal successors, (2153), 7 states have internal predecessors, (2153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:19:35,504 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:19:35,504 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 306 of 670 [2023-08-30 14:19:35,504 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:19:39,527 INFO L130 PetriNetUnfolder]: 52323/79074 cut-off events. [2023-08-30 14:19:39,527 INFO L131 PetriNetUnfolder]: For 186/186 co-relation queries the response was YES. [2023-08-30 14:19:39,647 INFO L83 FinitePrefix]: Finished finitePrefix Result has 154723 conditions, 79074 events. 52323/79074 cut-off events. For 186/186 co-relation queries the response was YES. Maximal size of possible extension queue 2611. Compared 612155 event pairs, 47170 based on Foata normal form. 0/52513 useless extension candidates. Maximal degree in co-relation 154710. Up to 75495 conditions per place. [2023-08-30 14:19:39,901 INFO L137 encePairwiseOnDemand]: 667/670 looper letters, 100 selfloop transitions, 5 changer transitions 0/121 dead transitions. [2023-08-30 14:19:39,902 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 121 transitions, 486 flow [2023-08-30 14:19:39,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 14:19:39,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 14:19:39,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1944 transitions. [2023-08-30 14:19:39,907 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4835820895522388 [2023-08-30 14:19:39,908 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1944 transitions. [2023-08-30 14:19:39,908 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1944 transitions. [2023-08-30 14:19:39,909 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:19:39,909 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1944 transitions. [2023-08-30 14:19:39,916 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 324.0) internal successors, (1944), 6 states have internal predecessors, (1944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:19:39,926 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 670.0) internal successors, (4690), 7 states have internal predecessors, (4690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:19:39,928 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 670.0) internal successors, (4690), 7 states have internal predecessors, (4690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:19:39,928 INFO L175 Difference]: Start difference. First operand has 117 places, 118 transitions, 264 flow. Second operand 6 states and 1944 transitions. [2023-08-30 14:19:39,928 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 121 transitions, 486 flow [2023-08-30 14:19:39,934 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 121 transitions, 483 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 14:19:39,936 INFO L231 Difference]: Finished difference. Result has 123 places, 121 transitions, 297 flow [2023-08-30 14:19:39,936 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=670, PETRI_DIFFERENCE_MINUEND_FLOW=261, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=297, PETRI_PLACES=123, PETRI_TRANSITIONS=121} [2023-08-30 14:19:39,937 INFO L281 CegarLoopForPetriNet]: 114 programPoint places, 9 predicate places. [2023-08-30 14:19:39,937 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 121 transitions, 297 flow [2023-08-30 14:19:39,938 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 307.57142857142856) internal successors, (2153), 7 states have internal predecessors, (2153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:19:39,938 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:19:39,938 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1] [2023-08-30 14:19:39,946 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 14:19:40,143 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:19:40,144 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2023-08-30 14:19:40,144 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:19:40,144 INFO L85 PathProgramCache]: Analyzing trace with hash 971389367, now seen corresponding path program 2 times [2023-08-30 14:19:40,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:19:40,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2045038226] [2023-08-30 14:19:40,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:19:40,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:19:40,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:19:40,186 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-30 14:19:40,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:19:40,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2045038226] [2023-08-30 14:19:40,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2045038226] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:19:40,187 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:19:40,187 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 14:19:40,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674062132] [2023-08-30 14:19:40,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:19:40,188 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:19:40,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:19:40,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:19:40,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:19:40,203 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 307 out of 670 [2023-08-30 14:19:40,205 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 121 transitions, 297 flow. Second operand has 3 states, 3 states have (on average 309.0) internal successors, (927), 3 states have internal predecessors, (927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:19:40,205 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:19:40,205 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 307 of 670 [2023-08-30 14:19:40,205 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:19:44,346 INFO L130 PetriNetUnfolder]: 51964/79351 cut-off events. [2023-08-30 14:19:44,346 INFO L131 PetriNetUnfolder]: For 121/121 co-relation queries the response was YES. [2023-08-30 14:19:44,533 INFO L83 FinitePrefix]: Finished finitePrefix Result has 154914 conditions, 79351 events. 51964/79351 cut-off events. For 121/121 co-relation queries the response was YES. Maximal size of possible extension queue 2583. Compared 624164 event pairs, 22836 based on Foata normal form. 0/52773 useless extension candidates. Maximal degree in co-relation 154897. Up to 75338 conditions per place. [2023-08-30 14:19:44,753 INFO L137 encePairwiseOnDemand]: 665/670 looper letters, 129 selfloop transitions, 2 changer transitions 0/147 dead transitions. [2023-08-30 14:19:44,753 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 147 transitions, 611 flow [2023-08-30 14:19:44,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:19:44,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:19:44,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1051 transitions. [2023-08-30 14:19:44,757 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5228855721393035 [2023-08-30 14:19:44,757 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1051 transitions. [2023-08-30 14:19:44,757 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1051 transitions. [2023-08-30 14:19:44,758 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:19:44,758 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1051 transitions. [2023-08-30 14:19:44,760 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 350.3333333333333) internal successors, (1051), 3 states have internal predecessors, (1051), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:19:44,763 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 670.0) internal successors, (2680), 4 states have internal predecessors, (2680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:19:44,764 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 670.0) internal successors, (2680), 4 states have internal predecessors, (2680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:19:44,764 INFO L175 Difference]: Start difference. First operand has 123 places, 121 transitions, 297 flow. Second operand 3 states and 1051 transitions. [2023-08-30 14:19:44,764 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 147 transitions, 611 flow [2023-08-30 14:19:44,927 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 147 transitions, 597 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-08-30 14:19:44,929 INFO L231 Difference]: Finished difference. Result has 125 places, 122 transitions, 299 flow [2023-08-30 14:19:44,929 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=670, PETRI_DIFFERENCE_MINUEND_FLOW=283, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=299, PETRI_PLACES=125, PETRI_TRANSITIONS=122} [2023-08-30 14:19:44,930 INFO L281 CegarLoopForPetriNet]: 114 programPoint places, 11 predicate places. [2023-08-30 14:19:44,930 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 122 transitions, 299 flow [2023-08-30 14:19:44,930 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 309.0) internal successors, (927), 3 states have internal predecessors, (927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:19:44,930 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:19:44,931 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:19:44,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-30 14:19:44,931 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2023-08-30 14:19:44,931 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:19:44,931 INFO L85 PathProgramCache]: Analyzing trace with hash -703396309, now seen corresponding path program 1 times [2023-08-30 14:19:44,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:19:44,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973423294] [2023-08-30 14:19:44,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:19:44,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:19:44,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:19:45,043 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 14:19:45,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:19:45,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973423294] [2023-08-30 14:19:45,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [973423294] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 14:19:45,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1861505730] [2023-08-30 14:19:45,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:19:45,044 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:19:45,044 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:19:45,049 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 14:19:45,052 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 14:19:45,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:19:45,128 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 14:19:45,129 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 14:19:45,145 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 14:19:45,146 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 14:19:45,197 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 14:19:45,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1861505730] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 14:19:45,198 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 14:19:45,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-08-30 14:19:45,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624348250] [2023-08-30 14:19:45,200 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 14:19:45,200 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-30 14:19:45,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:19:45,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-30 14:19:45,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-08-30 14:19:45,228 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 306 out of 670 [2023-08-30 14:19:45,232 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 122 transitions, 299 flow. Second operand has 13 states, 13 states have (on average 307.61538461538464) internal successors, (3999), 13 states have internal predecessors, (3999), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:19:45,232 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:19:45,232 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 306 of 670 [2023-08-30 14:19:45,232 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:19:49,823 INFO L130 PetriNetUnfolder]: 52627/79298 cut-off events. [2023-08-30 14:19:49,823 INFO L131 PetriNetUnfolder]: For 1372/1372 co-relation queries the response was YES. [2023-08-30 14:19:50,053 INFO L83 FinitePrefix]: Finished finitePrefix Result has 157121 conditions, 79298 events. 52627/79298 cut-off events. For 1372/1372 co-relation queries the response was YES. Maximal size of possible extension queue 2567. Compared 609364 event pairs, 47124 based on Foata normal form. 6/53321 useless extension candidates. Maximal degree in co-relation 157103. Up to 75361 conditions per place. [2023-08-30 14:19:50,276 INFO L137 encePairwiseOnDemand]: 667/670 looper letters, 101 selfloop transitions, 11 changer transitions 0/128 dead transitions. [2023-08-30 14:19:50,276 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 128 transitions, 559 flow [2023-08-30 14:19:50,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-30 14:19:50,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-30 14:19:50,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 3789 transitions. [2023-08-30 14:19:50,286 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47126865671641793 [2023-08-30 14:19:50,286 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 3789 transitions. [2023-08-30 14:19:50,287 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 3789 transitions. [2023-08-30 14:19:50,289 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:19:50,289 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 3789 transitions. [2023-08-30 14:19:50,296 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 315.75) internal successors, (3789), 12 states have internal predecessors, (3789), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:19:50,307 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 670.0) internal successors, (8710), 13 states have internal predecessors, (8710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:19:50,308 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 670.0) internal successors, (8710), 13 states have internal predecessors, (8710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:19:50,309 INFO L175 Difference]: Start difference. First operand has 125 places, 122 transitions, 299 flow. Second operand 12 states and 3789 transitions. [2023-08-30 14:19:50,309 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 128 transitions, 559 flow [2023-08-30 14:19:50,313 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 128 transitions, 557 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 14:19:50,315 INFO L231 Difference]: Finished difference. Result has 141 places, 128 transitions, 381 flow [2023-08-30 14:19:50,315 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=670, PETRI_DIFFERENCE_MINUEND_FLOW=297, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=381, PETRI_PLACES=141, PETRI_TRANSITIONS=128} [2023-08-30 14:19:50,316 INFO L281 CegarLoopForPetriNet]: 114 programPoint places, 27 predicate places. [2023-08-30 14:19:50,316 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 128 transitions, 381 flow [2023-08-30 14:19:50,317 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 307.61538461538464) internal successors, (3999), 13 states have internal predecessors, (3999), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:19:50,317 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:19:50,317 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 2, 1, 1, 1, 1, 1, 1] [2023-08-30 14:19:50,327 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 14:19:50,527 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,SelfDestructingSolverStorable10 [2023-08-30 14:19:50,527 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2023-08-30 14:19:50,528 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:19:50,528 INFO L85 PathProgramCache]: Analyzing trace with hash 1522001082, now seen corresponding path program 1 times [2023-08-30 14:19:50,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:19:50,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329479854] [2023-08-30 14:19:50,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:19:50,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:19:50,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:19:50,599 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-30 14:19:50,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:19:50,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329479854] [2023-08-30 14:19:50,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [329479854] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:19:50,600 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:19:50,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 14:19:50,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848027078] [2023-08-30 14:19:50,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:19:50,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:19:50,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:19:50,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:19:50,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:19:50,611 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 307 out of 670 [2023-08-30 14:19:50,613 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 128 transitions, 381 flow. Second operand has 3 states, 3 states have (on average 310.0) internal successors, (930), 3 states have internal predecessors, (930), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:19:50,613 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:19:50,613 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 307 of 670 [2023-08-30 14:19:50,613 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:19:55,373 INFO L130 PetriNetUnfolder]: 51482/77575 cut-off events. [2023-08-30 14:19:55,373 INFO L131 PetriNetUnfolder]: For 1335/1335 co-relation queries the response was YES. [2023-08-30 14:19:55,708 INFO L83 FinitePrefix]: Finished finitePrefix Result has 153196 conditions, 77575 events. 51482/77575 cut-off events. For 1335/1335 co-relation queries the response was YES. Maximal size of possible extension queue 2520. Compared 593532 event pairs, 46067 based on Foata normal form. 0/52524 useless extension candidates. Maximal degree in co-relation 153170. Up to 73702 conditions per place. [2023-08-30 14:19:55,912 INFO L137 encePairwiseOnDemand]: 668/670 looper letters, 110 selfloop transitions, 1 changer transitions 0/127 dead transitions. [2023-08-30 14:19:55,912 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 127 transitions, 599 flow [2023-08-30 14:19:55,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:19:55,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:19:55,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1022 transitions. [2023-08-30 14:19:55,915 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5084577114427861 [2023-08-30 14:19:55,915 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1022 transitions. [2023-08-30 14:19:55,915 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1022 transitions. [2023-08-30 14:19:55,915 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:19:55,916 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1022 transitions. [2023-08-30 14:19:55,917 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 340.6666666666667) internal successors, (1022), 3 states have internal predecessors, (1022), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:19:55,920 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 670.0) internal successors, (2680), 4 states have internal predecessors, (2680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:19:55,920 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 670.0) internal successors, (2680), 4 states have internal predecessors, (2680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:19:55,920 INFO L175 Difference]: Start difference. First operand has 141 places, 128 transitions, 381 flow. Second operand 3 states and 1022 transitions. [2023-08-30 14:19:55,921 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 127 transitions, 599 flow [2023-08-30 14:19:55,923 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 127 transitions, 551 flow, removed 19 selfloop flow, removed 5 redundant places. [2023-08-30 14:19:55,925 INFO L231 Difference]: Finished difference. Result has 137 places, 127 transitions, 331 flow [2023-08-30 14:19:55,925 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=670, PETRI_DIFFERENCE_MINUEND_FLOW=329, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=331, PETRI_PLACES=137, PETRI_TRANSITIONS=127} [2023-08-30 14:19:55,926 INFO L281 CegarLoopForPetriNet]: 114 programPoint places, 23 predicate places. [2023-08-30 14:19:55,926 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 127 transitions, 331 flow [2023-08-30 14:19:55,927 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 310.0) internal successors, (930), 3 states have internal predecessors, (930), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:19:55,927 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:19:55,927 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 2, 1, 1, 1, 1, 1, 1] [2023-08-30 14:19:55,927 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-30 14:19:55,927 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2023-08-30 14:19:55,927 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:19:55,928 INFO L85 PathProgramCache]: Analyzing trace with hash 1522001153, now seen corresponding path program 1 times [2023-08-30 14:19:55,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:19:55,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419824153] [2023-08-30 14:19:55,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:19:55,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:19:55,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:19:55,982 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-08-30 14:19:55,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:19:55,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [419824153] [2023-08-30 14:19:55,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [419824153] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:19:55,983 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:19:55,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 14:19:55,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634849117] [2023-08-30 14:19:55,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:19:55,984 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:19:55,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:19:55,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:19:55,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:19:55,994 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 306 out of 670 [2023-08-30 14:19:55,995 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 127 transitions, 331 flow. Second operand has 3 states, 3 states have (on average 309.0) internal successors, (927), 3 states have internal predecessors, (927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:19:55,995 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:19:55,995 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 306 of 670 [2023-08-30 14:19:55,995 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:20:00,590 INFO L130 PetriNetUnfolder]: 48867/76871 cut-off events. [2023-08-30 14:20:00,591 INFO L131 PetriNetUnfolder]: For 770/770 co-relation queries the response was YES. [2023-08-30 14:20:00,884 INFO L83 FinitePrefix]: Finished finitePrefix Result has 150263 conditions, 76871 events. 48867/76871 cut-off events. For 770/770 co-relation queries the response was YES. Maximal size of possible extension queue 2175. Compared 634781 event pairs, 1609 based on Foata normal form. 0/53050 useless extension candidates. Maximal degree in co-relation 150239. Up to 69200 conditions per place. [2023-08-30 14:20:01,084 INFO L137 encePairwiseOnDemand]: 666/670 looper letters, 154 selfloop transitions, 4 changer transitions 0/174 dead transitions. [2023-08-30 14:20:01,084 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 174 transitions, 739 flow [2023-08-30 14:20:01,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:20:01,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:20:01,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1066 transitions. [2023-08-30 14:20:01,087 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5303482587064676 [2023-08-30 14:20:01,087 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1066 transitions. [2023-08-30 14:20:01,087 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1066 transitions. [2023-08-30 14:20:01,087 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:20:01,088 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1066 transitions. [2023-08-30 14:20:01,089 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 355.3333333333333) internal successors, (1066), 3 states have internal predecessors, (1066), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:20:01,092 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 670.0) internal successors, (2680), 4 states have internal predecessors, (2680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:20:01,092 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 670.0) internal successors, (2680), 4 states have internal predecessors, (2680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:20:01,092 INFO L175 Difference]: Start difference. First operand has 137 places, 127 transitions, 331 flow. Second operand 3 states and 1066 transitions. [2023-08-30 14:20:01,092 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 174 transitions, 739 flow [2023-08-30 14:20:01,095 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 174 transitions, 738 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 14:20:01,097 INFO L231 Difference]: Finished difference. Result has 138 places, 127 transitions, 342 flow [2023-08-30 14:20:01,097 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=670, PETRI_DIFFERENCE_MINUEND_FLOW=326, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=342, PETRI_PLACES=138, PETRI_TRANSITIONS=127} [2023-08-30 14:20:01,098 INFO L281 CegarLoopForPetriNet]: 114 programPoint places, 24 predicate places. [2023-08-30 14:20:01,098 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 127 transitions, 342 flow [2023-08-30 14:20:01,098 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 309.0) internal successors, (927), 3 states have internal predecessors, (927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:20:01,098 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:20:01,098 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:20:01,099 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-30 14:20:01,099 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2023-08-30 14:20:01,099 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:20:01,099 INFO L85 PathProgramCache]: Analyzing trace with hash 588118332, now seen corresponding path program 1 times [2023-08-30 14:20:01,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:20:01,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793098098] [2023-08-30 14:20:01,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:20:01,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:20:01,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:20:01,326 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-30 14:20:01,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:20:01,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [793098098] [2023-08-30 14:20:01,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [793098098] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:20:01,327 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:20:01,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 14:20:01,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327725168] [2023-08-30 14:20:01,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:20:01,328 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 14:20:01,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:20:01,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 14:20:01,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-08-30 14:20:01,522 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 294 out of 670 [2023-08-30 14:20:01,523 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 127 transitions, 342 flow. Second operand has 6 states, 6 states have (on average 295.6666666666667) internal successors, (1774), 6 states have internal predecessors, (1774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:20:01,523 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:20:01,523 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 294 of 670 [2023-08-30 14:20:01,523 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:20:09,750 INFO L130 PetriNetUnfolder]: 87874/133157 cut-off events. [2023-08-30 14:20:09,751 INFO L131 PetriNetUnfolder]: For 9750/9750 co-relation queries the response was YES. [2023-08-30 14:20:10,311 INFO L83 FinitePrefix]: Finished finitePrefix Result has 268400 conditions, 133157 events. 87874/133157 cut-off events. For 9750/9750 co-relation queries the response was YES. Maximal size of possible extension queue 4147. Compared 1115630 event pairs, 16605 based on Foata normal form. 0/90407 useless extension candidates. Maximal degree in co-relation 268376. Up to 74689 conditions per place. [2023-08-30 14:20:10,859 INFO L137 encePairwiseOnDemand]: 653/670 looper letters, 354 selfloop transitions, 30 changer transitions 0/400 dead transitions. [2023-08-30 14:20:10,859 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 400 transitions, 1734 flow [2023-08-30 14:20:10,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 14:20:10,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 14:20:10,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2435 transitions. [2023-08-30 14:20:10,863 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5191897654584222 [2023-08-30 14:20:10,863 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2435 transitions. [2023-08-30 14:20:10,863 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2435 transitions. [2023-08-30 14:20:10,864 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:20:10,865 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2435 transitions. [2023-08-30 14:20:10,868 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 347.85714285714283) internal successors, (2435), 7 states have internal predecessors, (2435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:20:10,873 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 670.0) internal successors, (5360), 8 states have internal predecessors, (5360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:20:10,874 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 670.0) internal successors, (5360), 8 states have internal predecessors, (5360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:20:10,874 INFO L175 Difference]: Start difference. First operand has 138 places, 127 transitions, 342 flow. Second operand 7 states and 2435 transitions. [2023-08-30 14:20:10,874 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 400 transitions, 1734 flow [2023-08-30 14:20:10,881 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 400 transitions, 1721 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 14:20:10,885 INFO L231 Difference]: Finished difference. Result has 148 places, 156 transitions, 546 flow [2023-08-30 14:20:10,885 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=670, PETRI_DIFFERENCE_MINUEND_FLOW=338, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=546, PETRI_PLACES=148, PETRI_TRANSITIONS=156} [2023-08-30 14:20:10,886 INFO L281 CegarLoopForPetriNet]: 114 programPoint places, 34 predicate places. [2023-08-30 14:20:10,886 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 156 transitions, 546 flow [2023-08-30 14:20:10,886 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 295.6666666666667) internal successors, (1774), 6 states have internal predecessors, (1774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:20:10,886 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:20:10,887 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:20:10,887 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-30 14:20:10,887 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2023-08-30 14:20:10,887 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:20:10,887 INFO L85 PathProgramCache]: Analyzing trace with hash -1468620600, now seen corresponding path program 1 times [2023-08-30 14:20:10,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:20:10,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398428545] [2023-08-30 14:20:10,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:20:10,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:20:10,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:20:10,973 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-30 14:20:10,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:20:10,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398428545] [2023-08-30 14:20:10,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [398428545] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:20:10,974 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:20:10,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 14:20:10,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590763130] [2023-08-30 14:20:10,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:20:10,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:20:10,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:20:10,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:20:10,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:20:10,984 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 307 out of 670 [2023-08-30 14:20:10,985 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 156 transitions, 546 flow. Second operand has 3 states, 3 states have (on average 311.3333333333333) internal successors, (934), 3 states have internal predecessors, (934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:20:10,985 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:20:10,985 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 307 of 670 [2023-08-30 14:20:10,986 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:20:28,034 INFO L130 PetriNetUnfolder]: 152637/231469 cut-off events. [2023-08-30 14:20:28,034 INFO L131 PetriNetUnfolder]: For 67311/67352 co-relation queries the response was YES. [2023-08-30 14:20:29,275 INFO L83 FinitePrefix]: Finished finitePrefix Result has 524464 conditions, 231469 events. 152637/231469 cut-off events. For 67311/67352 co-relation queries the response was YES. Maximal size of possible extension queue 6623. Compared 2037521 event pairs, 123215 based on Foata normal form. 1357/171700 useless extension candidates. Maximal degree in co-relation 524433. Up to 130784 conditions per place. [2023-08-30 14:20:29,984 INFO L137 encePairwiseOnDemand]: 665/670 looper letters, 257 selfloop transitions, 2 changer transitions 0/275 dead transitions. [2023-08-30 14:20:29,985 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 275 transitions, 1462 flow [2023-08-30 14:20:29,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:20:29,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:20:29,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1113 transitions. [2023-08-30 14:20:29,986 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5537313432835821 [2023-08-30 14:20:29,987 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1113 transitions. [2023-08-30 14:20:29,987 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1113 transitions. [2023-08-30 14:20:29,987 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:20:29,987 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1113 transitions. [2023-08-30 14:20:29,989 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 371.0) internal successors, (1113), 3 states have internal predecessors, (1113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:20:29,991 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 670.0) internal successors, (2680), 4 states have internal predecessors, (2680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:20:29,991 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 670.0) internal successors, (2680), 4 states have internal predecessors, (2680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:20:29,991 INFO L175 Difference]: Start difference. First operand has 148 places, 156 transitions, 546 flow. Second operand 3 states and 1113 transitions. [2023-08-30 14:20:29,991 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 275 transitions, 1462 flow [2023-08-30 14:20:30,364 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 275 transitions, 1462 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 14:20:30,366 INFO L231 Difference]: Finished difference. Result has 151 places, 157 transitions, 562 flow [2023-08-30 14:20:30,367 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=670, PETRI_DIFFERENCE_MINUEND_FLOW=546, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=562, PETRI_PLACES=151, PETRI_TRANSITIONS=157} [2023-08-30 14:20:30,367 INFO L281 CegarLoopForPetriNet]: 114 programPoint places, 37 predicate places. [2023-08-30 14:20:30,367 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 157 transitions, 562 flow [2023-08-30 14:20:30,367 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 311.3333333333333) internal successors, (934), 3 states have internal predecessors, (934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:20:30,367 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:20:30,367 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 3, 2, 2, 1, 1, 1, 1, 1] [2023-08-30 14:20:30,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-30 14:20:30,368 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2023-08-30 14:20:30,368 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:20:30,368 INFO L85 PathProgramCache]: Analyzing trace with hash -1940641750, now seen corresponding path program 1 times [2023-08-30 14:20:30,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:20:30,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1136855342] [2023-08-30 14:20:30,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:20:30,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:20:30,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 14:20:30,387 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-30 14:20:30,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 14:20:30,403 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-30 14:20:30,403 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-30 14:20:30,403 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (34 of 35 remaining) [2023-08-30 14:20:30,404 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (33 of 35 remaining) [2023-08-30 14:20:30,404 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (32 of 35 remaining) [2023-08-30 14:20:30,404 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (31 of 35 remaining) [2023-08-30 14:20:30,404 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (30 of 35 remaining) [2023-08-30 14:20:30,404 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (29 of 35 remaining) [2023-08-30 14:20:30,404 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (28 of 35 remaining) [2023-08-30 14:20:30,405 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW (27 of 35 remaining) [2023-08-30 14:20:30,405 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW (26 of 35 remaining) [2023-08-30 14:20:30,595 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW (25 of 35 remaining) [2023-08-30 14:20:30,595 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 35 remaining) [2023-08-30 14:20:30,595 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 35 remaining) [2023-08-30 14:20:30,595 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 35 remaining) [2023-08-30 14:20:30,595 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 35 remaining) [2023-08-30 14:20:30,595 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 35 remaining) [2023-08-30 14:20:30,595 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 35 remaining) [2023-08-30 14:20:30,595 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 35 remaining) [2023-08-30 14:20:30,595 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 35 remaining) [2023-08-30 14:20:30,596 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 35 remaining) [2023-08-30 14:20:30,596 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 35 remaining) [2023-08-30 14:20:30,596 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 35 remaining) [2023-08-30 14:20:30,596 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 35 remaining) [2023-08-30 14:20:30,596 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 35 remaining) [2023-08-30 14:20:30,596 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 35 remaining) [2023-08-30 14:20:30,596 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 35 remaining) [2023-08-30 14:20:30,596 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 35 remaining) [2023-08-30 14:20:30,596 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 35 remaining) [2023-08-30 14:20:30,596 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 35 remaining) [2023-08-30 14:20:30,596 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 35 remaining) [2023-08-30 14:20:30,596 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 35 remaining) [2023-08-30 14:20:30,596 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 35 remaining) [2023-08-30 14:20:30,597 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 35 remaining) [2023-08-30 14:20:30,597 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 35 remaining) [2023-08-30 14:20:30,597 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 35 remaining) [2023-08-30 14:20:30,597 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 35 remaining) [2023-08-30 14:20:30,597 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-08-30 14:20:30,597 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:20:30,598 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-30 14:20:30,598 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-08-30 14:20:30,633 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-30 14:20:30,636 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 383 places, 451 transitions, 932 flow [2023-08-30 14:20:30,741 INFO L130 PetriNetUnfolder]: 168/1021 cut-off events. [2023-08-30 14:20:30,742 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-08-30 14:20:30,757 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1049 conditions, 1021 events. 168/1021 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 5733 event pairs, 1 based on Foata normal form. 0/769 useless extension candidates. Maximal degree in co-relation 719. Up to 16 conditions per place. [2023-08-30 14:20:30,757 INFO L82 GeneralOperation]: Start removeDead. Operand has 383 places, 451 transitions, 932 flow [2023-08-30 14:20:30,765 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 383 places, 451 transitions, 932 flow [2023-08-30 14:20:30,765 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 14:20:30,766 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 383 places, 451 transitions, 932 flow [2023-08-30 14:20:30,766 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 383 places, 451 transitions, 932 flow [2023-08-30 14:20:30,766 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 383 places, 451 transitions, 932 flow [2023-08-30 14:20:30,863 INFO L130 PetriNetUnfolder]: 168/1021 cut-off events. [2023-08-30 14:20:30,863 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-08-30 14:20:30,878 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1049 conditions, 1021 events. 168/1021 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 5733 event pairs, 1 based on Foata normal form. 0/769 useless extension candidates. Maximal degree in co-relation 719. Up to 16 conditions per place. [2023-08-30 14:20:30,925 INFO L119 LiptonReduction]: Number of co-enabled transitions 121920 [2023-08-30 14:20:35,086 INFO L134 LiptonReduction]: Checked pairs total: 218513 [2023-08-30 14:20:35,086 INFO L136 LiptonReduction]: Total number of compositions: 366 [2023-08-30 14:20:35,087 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 14:20:35,088 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;@5d1c53bd, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 14:20:35,088 INFO L358 AbstractCegarLoop]: Starting to check reachability of 41 error locations. [2023-08-30 14:20:35,088 INFO L130 PetriNetUnfolder]: 1/3 cut-off events. [2023-08-30 14:20:35,089 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 14:20:35,089 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:20:35,089 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-30 14:20:35,089 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2023-08-30 14:20:35,089 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:20:35,089 INFO L85 PathProgramCache]: Analyzing trace with hash 88220, now seen corresponding path program 1 times [2023-08-30 14:20:35,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:20:35,089 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041162840] [2023-08-30 14:20:35,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:20:35,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:20:35,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:20:35,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 14:20:35,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:20:35,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2041162840] [2023-08-30 14:20:35,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2041162840] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:20:35,123 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:20:35,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 14:20:35,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342867051] [2023-08-30 14:20:35,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:20:35,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:20:35,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:20:35,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:20:35,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:20:35,133 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 374 out of 817 [2023-08-30 14:20:35,134 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 198 transitions, 426 flow. Second operand has 3 states, 3 states have (on average 374.6666666666667) internal successors, (1124), 3 states have internal predecessors, (1124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:20:35,134 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:20:35,134 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 374 of 817 [2023-08-30 14:20:35,134 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand