./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_36-indirect_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_36-indirect_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 3eff698bae51c39e8a3a4c763800dbda831dabb73a169fa31c8e326faee47cd8 --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 14:13:58,591 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 14:13:58,593 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 14:13:58,626 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 14:13:58,628 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 14:13:58,630 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 14:13:58,632 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 14:13:58,634 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 14:13:58,635 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 14:13:58,638 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 14:13:58,639 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 14:13:58,641 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 14:13:58,641 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 14:13:58,643 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 14:13:58,643 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 14:13:58,647 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 14:13:58,648 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 14:13:58,649 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 14:13:58,650 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 14:13:58,654 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 14:13:58,654 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 14:13:58,655 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 14:13:58,656 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 14:13:58,656 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 14:13:58,661 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 14:13:58,661 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 14:13:58,661 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 14:13:58,663 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 14:13:58,663 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 14:13:58,663 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 14:13:58,664 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 14:13:58,668 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 14:13:58,669 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 14:13:58,670 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 14:13:58,670 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 14:13:58,670 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 14:13:58,671 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 14:13:58,671 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 14:13:58,671 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 14:13:58,671 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 14:13:58,672 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 14:13:58,673 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-08-30 14:13:58,698 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 14:13:58,698 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 14:13:58,699 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 14:13:58,699 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 14:13:58,700 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 14:13:58,700 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 14:13:58,700 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 14:13:58,700 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 14:13:58,700 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 14:13:58,701 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 14:13:58,701 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 14:13:58,701 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 14:13:58,701 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 14:13:58,702 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 14:13:58,702 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 14:13:58,702 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 14:13:58,702 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 14:13:58,702 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 14:13:58,702 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-08-30 14:13:58,702 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 14:13:58,703 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 14:13:58,703 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 14:13:58,703 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 14:13:58,703 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 14:13:58,703 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 14:13:58,703 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 14:13:58,703 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 14:13:58,704 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 14:13:58,704 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 14:13:58,704 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 14:13:58,704 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 14:13:58,704 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 14:13:58,704 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 14:13:58,705 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 14:13:58,705 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 14:13:58,705 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 14:13:58,705 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 14:13:58,705 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3eff698bae51c39e8a3a4c763800dbda831dabb73a169fa31c8e326faee47cd8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-30 14:13:58,948 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 14:13:58,961 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 14:13:58,963 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 14:13:58,964 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 14:13:58,964 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 14:13:58,965 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_36-indirect_racefree.i [2023-08-30 14:13:59,899 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 14:14:00,070 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 14:14:00,070 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_36-indirect_racefree.i [2023-08-30 14:14:00,084 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/640fd5c6c/19d706c18b26433bae15e2b6d9424bb0/FLAG53ffb09d5 [2023-08-30 14:14:00,092 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/640fd5c6c/19d706c18b26433bae15e2b6d9424bb0 [2023-08-30 14:14:00,096 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 14:14:00,097 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 14:14:00,097 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 14:14:00,097 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 14:14:00,102 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 14:14:00,102 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 02:14:00" (1/1) ... [2023-08-30 14:14:00,103 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6acaa053 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:14:00, skipping insertion in model container [2023-08-30 14:14:00,104 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 02:14:00" (1/1) ... [2023-08-30 14:14:00,107 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 14:14:00,142 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 14:14:00,333 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_36-indirect_racefree.i[30176,30189] [2023-08-30 14:14:00,352 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 14:14:00,362 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 14:14:00,392 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_36-indirect_racefree.i[30176,30189] [2023-08-30 14:14:00,413 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 14:14:00,450 INFO L208 MainTranslator]: Completed translation [2023-08-30 14:14:00,450 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:14:00 WrapperNode [2023-08-30 14:14:00,450 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 14:14:00,451 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 14:14:00,451 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 14:14:00,452 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 14:14:00,456 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:14:00" (1/1) ... [2023-08-30 14:14:00,479 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:14:00" (1/1) ... [2023-08-30 14:14:00,498 INFO L138 Inliner]: procedures = 170, calls = 37, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 84 [2023-08-30 14:14:00,499 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 14:14:00,499 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 14:14:00,500 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 14:14:00,500 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 14:14:00,505 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:14:00" (1/1) ... [2023-08-30 14:14:00,506 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:14:00" (1/1) ... [2023-08-30 14:14:00,517 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:14:00" (1/1) ... [2023-08-30 14:14:00,517 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:14:00" (1/1) ... [2023-08-30 14:14:00,523 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:14:00" (1/1) ... [2023-08-30 14:14:00,530 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:14:00" (1/1) ... [2023-08-30 14:14:00,531 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:14:00" (1/1) ... [2023-08-30 14:14:00,532 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:14:00" (1/1) ... [2023-08-30 14:14:00,535 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 14:14:00,536 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 14:14:00,537 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 14:14:00,537 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 14:14:00,540 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:14:00" (1/1) ... [2023-08-30 14:14:00,543 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 14:14:00,551 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:14:00,574 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 14:14:00,596 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 14:14:00,601 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 14:14:00,601 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 14:14:00,602 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-30 14:14:00,602 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 14:14:00,602 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 14:14:00,602 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-30 14:14:00,602 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-30 14:14:00,602 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 14:14:00,602 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 14:14:00,602 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 14:14:00,603 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 14:14:00,603 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 14:14:00,707 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 14:14:00,713 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 14:14:00,922 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 14:14:00,927 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 14:14:00,948 INFO L302 CfgBuilder]: Removed 10 assume(true) statements. [2023-08-30 14:14:00,950 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 02:14:00 BoogieIcfgContainer [2023-08-30 14:14:00,950 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 14:14:00,952 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 14:14:00,952 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 14:14:00,954 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 14:14:00,954 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 02:14:00" (1/3) ... [2023-08-30 14:14:00,954 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e443d5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 02:14:00, skipping insertion in model container [2023-08-30 14:14:00,954 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:14:00" (2/3) ... [2023-08-30 14:14:00,954 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e443d5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 02:14:00, skipping insertion in model container [2023-08-30 14:14:00,954 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 02:14:00" (3/3) ... [2023-08-30 14:14:00,955 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_36-indirect_racefree.i [2023-08-30 14:14:00,960 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 14:14:00,972 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 14:14:00,973 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2023-08-30 14:14:00,973 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 14:14:01,027 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-08-30 14:14:01,063 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 117 places, 126 transitions, 260 flow [2023-08-30 14:14:01,098 INFO L130 PetriNetUnfolder]: 17/160 cut-off events. [2023-08-30 14:14:01,098 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 14:14:01,103 INFO L83 FinitePrefix]: Finished finitePrefix Result has 166 conditions, 160 events. 17/160 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 379 event pairs, 0 based on Foata normal form. 0/132 useless extension candidates. Maximal degree in co-relation 83. Up to 4 conditions per place. [2023-08-30 14:14:01,104 INFO L82 GeneralOperation]: Start removeDead. Operand has 117 places, 126 transitions, 260 flow [2023-08-30 14:14:01,106 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 115 places, 123 transitions, 254 flow [2023-08-30 14:14:01,109 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 14:14:01,114 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 115 places, 123 transitions, 254 flow [2023-08-30 14:14:01,116 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 115 places, 123 transitions, 254 flow [2023-08-30 14:14:01,120 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 115 places, 123 transitions, 254 flow [2023-08-30 14:14:01,143 INFO L130 PetriNetUnfolder]: 16/157 cut-off events. [2023-08-30 14:14:01,143 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 14:14:01,144 INFO L83 FinitePrefix]: Finished finitePrefix Result has 163 conditions, 157 events. 16/157 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 377 event pairs, 0 based on Foata normal form. 0/130 useless extension candidates. Maximal degree in co-relation 83. Up to 4 conditions per place. [2023-08-30 14:14:01,145 INFO L119 LiptonReduction]: Number of co-enabled transitions 3520 [2023-08-30 14:14:03,581 INFO L134 LiptonReduction]: Checked pairs total: 6399 [2023-08-30 14:14:03,581 INFO L136 LiptonReduction]: Total number of compositions: 108 [2023-08-30 14:14:03,590 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 14:14:03,594 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;@48504028, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 14:14:03,594 INFO L358 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2023-08-30 14:14:03,597 INFO L130 PetriNetUnfolder]: 1/10 cut-off events. [2023-08-30 14:14:03,597 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 14:14:03,597 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:14:03,597 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-30 14:14:03,597 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-08-30 14:14:03,600 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:14:03,600 INFO L85 PathProgramCache]: Analyzing trace with hash 14872980, now seen corresponding path program 1 times [2023-08-30 14:14:03,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:14:03,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [684407750] [2023-08-30 14:14:03,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:14:03,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:14:03,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:14:03,766 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 14:14:03,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:14:03,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [684407750] [2023-08-30 14:14:03,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [684407750] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:14:03,767 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:14:03,767 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 14:14:03,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877937475] [2023-08-30 14:14:03,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:14:03,774 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:14:03,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:14:03,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:14:03,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:14:03,806 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 234 [2023-08-30 14:14:03,808 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 40 transitions, 88 flow. Second operand has 3 states, 3 states have (on average 109.33333333333333) internal successors, (328), 3 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:14:03,808 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:14:03,808 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 234 [2023-08-30 14:14:03,809 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:14:03,898 INFO L130 PetriNetUnfolder]: 98/232 cut-off events. [2023-08-30 14:14:03,898 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 14:14:03,899 INFO L83 FinitePrefix]: Finished finitePrefix Result has 463 conditions, 232 events. 98/232 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 854 event pairs, 78 based on Foata normal form. 8/191 useless extension candidates. Maximal degree in co-relation 441. Up to 207 conditions per place. [2023-08-30 14:14:03,900 INFO L137 encePairwiseOnDemand]: 220/234 looper letters, 39 selfloop transitions, 2 changer transitions 0/44 dead transitions. [2023-08-30 14:14:03,900 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 44 transitions, 178 flow [2023-08-30 14:14:03,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:14:03,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:14:03,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 383 transitions. [2023-08-30 14:14:03,912 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5455840455840456 [2023-08-30 14:14:03,913 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 383 transitions. [2023-08-30 14:14:03,913 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 383 transitions. [2023-08-30 14:14:03,914 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:14:03,915 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 383 transitions. [2023-08-30 14:14:03,917 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 127.66666666666667) internal successors, (383), 3 states have internal predecessors, (383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:14:03,924 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 234.0) internal successors, (936), 4 states have internal predecessors, (936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:14:03,925 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 234.0) internal successors, (936), 4 states have internal predecessors, (936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:14:03,926 INFO L175 Difference]: Start difference. First operand has 35 places, 40 transitions, 88 flow. Second operand 3 states and 383 transitions. [2023-08-30 14:14:03,927 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 44 transitions, 178 flow [2023-08-30 14:14:03,928 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 44 transitions, 178 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 14:14:03,930 INFO L231 Difference]: Finished difference. Result has 35 places, 29 transitions, 74 flow [2023-08-30 14:14:03,931 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=234, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=74, PETRI_PLACES=35, PETRI_TRANSITIONS=29} [2023-08-30 14:14:03,933 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 0 predicate places. [2023-08-30 14:14:03,933 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 29 transitions, 74 flow [2023-08-30 14:14:03,934 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 109.33333333333333) internal successors, (328), 3 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:14:03,934 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:14:03,934 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-30 14:14:03,934 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 14:14:03,934 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-08-30 14:14:03,934 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:14:03,934 INFO L85 PathProgramCache]: Analyzing trace with hash 1408067669, now seen corresponding path program 1 times [2023-08-30 14:14:03,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:14:03,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2132476713] [2023-08-30 14:14:03,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:14:03,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:14:03,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 14:14:03,952 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-30 14:14:03,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 14:14:03,977 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-30 14:14:03,977 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-30 14:14:03,978 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 13 remaining) [2023-08-30 14:14:03,979 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 13 remaining) [2023-08-30 14:14:03,979 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 13 remaining) [2023-08-30 14:14:03,979 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 13 remaining) [2023-08-30 14:14:03,979 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 13 remaining) [2023-08-30 14:14:03,979 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 13 remaining) [2023-08-30 14:14:03,980 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 13 remaining) [2023-08-30 14:14:03,980 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 13 remaining) [2023-08-30 14:14:03,980 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 13 remaining) [2023-08-30 14:14:03,980 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 13 remaining) [2023-08-30 14:14:03,980 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 13 remaining) [2023-08-30 14:14:03,980 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 13 remaining) [2023-08-30 14:14:03,980 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 13 remaining) [2023-08-30 14:14:03,980 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 14:14:03,981 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-08-30 14:14:03,982 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-30 14:14:03,982 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-30 14:14:03,997 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-30 14:14:04,000 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 154 places, 168 transitions, 354 flow [2023-08-30 14:14:04,019 INFO L130 PetriNetUnfolder]: 31/272 cut-off events. [2023-08-30 14:14:04,019 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-08-30 14:14:04,021 INFO L83 FinitePrefix]: Finished finitePrefix Result has 286 conditions, 272 events. 31/272 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 832 event pairs, 0 based on Foata normal form. 0/219 useless extension candidates. Maximal degree in co-relation 162. Up to 8 conditions per place. [2023-08-30 14:14:04,021 INFO L82 GeneralOperation]: Start removeDead. Operand has 154 places, 168 transitions, 354 flow [2023-08-30 14:14:04,022 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 154 places, 168 transitions, 354 flow [2023-08-30 14:14:04,022 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 14:14:04,022 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 154 places, 168 transitions, 354 flow [2023-08-30 14:14:04,023 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 154 places, 168 transitions, 354 flow [2023-08-30 14:14:04,023 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 154 places, 168 transitions, 354 flow [2023-08-30 14:14:04,039 INFO L130 PetriNetUnfolder]: 31/272 cut-off events. [2023-08-30 14:14:04,039 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-08-30 14:14:04,040 INFO L83 FinitePrefix]: Finished finitePrefix Result has 286 conditions, 272 events. 31/272 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 832 event pairs, 0 based on Foata normal form. 0/219 useless extension candidates. Maximal degree in co-relation 162. Up to 8 conditions per place. [2023-08-30 14:14:04,045 INFO L119 LiptonReduction]: Number of co-enabled transitions 11760 [2023-08-30 14:14:06,533 INFO L134 LiptonReduction]: Checked pairs total: 24031 [2023-08-30 14:14:06,534 INFO L136 LiptonReduction]: Total number of compositions: 140 [2023-08-30 14:14:06,535 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 14:14:06,536 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;@48504028, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 14:14:06,537 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2023-08-30 14:14:06,538 INFO L130 PetriNetUnfolder]: 1/12 cut-off events. [2023-08-30 14:14:06,538 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 14:14:06,538 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:14:06,539 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 14:14:06,539 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-08-30 14:14:06,539 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:14:06,539 INFO L85 PathProgramCache]: Analyzing trace with hash 794374794, now seen corresponding path program 1 times [2023-08-30 14:14:06,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:14:06,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1229588655] [2023-08-30 14:14:06,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:14:06,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:14:06,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:14:06,604 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 14:14:06,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:14:06,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1229588655] [2023-08-30 14:14:06,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1229588655] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:14:06,604 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:14:06,605 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 14:14:06,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8166128] [2023-08-30 14:14:06,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:14:06,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:14:06,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:14:06,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:14:06,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:14:06,613 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 142 out of 308 [2023-08-30 14:14:06,614 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 66 transitions, 150 flow. Second operand has 3 states, 3 states have (on average 143.33333333333334) internal successors, (430), 3 states have internal predecessors, (430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:14:06,614 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:14:06,614 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 142 of 308 [2023-08-30 14:14:06,614 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:14:07,093 INFO L130 PetriNetUnfolder]: 4435/7401 cut-off events. [2023-08-30 14:14:07,093 INFO L131 PetriNetUnfolder]: For 80/80 co-relation queries the response was YES. [2023-08-30 14:14:07,099 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14568 conditions, 7401 events. 4435/7401 cut-off events. For 80/80 co-relation queries the response was YES. Maximal size of possible extension queue 313. Compared 48916 event pairs, 2080 based on Foata normal form. 710/5791 useless extension candidates. Maximal degree in co-relation 1678. Up to 7046 conditions per place. [2023-08-30 14:14:07,121 INFO L137 encePairwiseOnDemand]: 289/308 looper letters, 58 selfloop transitions, 2 changer transitions 0/67 dead transitions. [2023-08-30 14:14:07,122 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 67 transitions, 272 flow [2023-08-30 14:14:07,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:14:07,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:14:07,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 509 transitions. [2023-08-30 14:14:07,125 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5508658008658008 [2023-08-30 14:14:07,125 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 509 transitions. [2023-08-30 14:14:07,125 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 509 transitions. [2023-08-30 14:14:07,126 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:14:07,126 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 509 transitions. [2023-08-30 14:14:07,127 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 169.66666666666666) internal successors, (509), 3 states have internal predecessors, (509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:14:07,129 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 308.0) internal successors, (1232), 4 states have internal predecessors, (1232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:14:07,130 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 308.0) internal successors, (1232), 4 states have internal predecessors, (1232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:14:07,130 INFO L175 Difference]: Start difference. First operand has 55 places, 66 transitions, 150 flow. Second operand 3 states and 509 transitions. [2023-08-30 14:14:07,130 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 67 transitions, 272 flow [2023-08-30 14:14:07,131 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 67 transitions, 272 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 14:14:07,132 INFO L231 Difference]: Finished difference. Result has 58 places, 53 transitions, 138 flow [2023-08-30 14:14:07,132 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=308, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=138, PETRI_PLACES=58, PETRI_TRANSITIONS=53} [2023-08-30 14:14:07,133 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 3 predicate places. [2023-08-30 14:14:07,134 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 53 transitions, 138 flow [2023-08-30 14:14:07,134 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 143.33333333333334) internal successors, (430), 3 states have internal predecessors, (430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:14:07,135 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:14:07,135 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:14:07,135 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-30 14:14:07,135 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-08-30 14:14:07,135 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:14:07,135 INFO L85 PathProgramCache]: Analyzing trace with hash -1103590140, now seen corresponding path program 1 times [2023-08-30 14:14:07,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:14:07,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55465769] [2023-08-30 14:14:07,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:14:07,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:14:07,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:14:07,298 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 14:14:07,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:14:07,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [55465769] [2023-08-30 14:14:07,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [55465769] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:14:07,299 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:14:07,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 14:14:07,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343455105] [2023-08-30 14:14:07,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:14:07,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 14:14:07,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:14:07,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 14:14:07,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-30 14:14:07,356 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 308 [2023-08-30 14:14:07,357 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 53 transitions, 138 flow. Second operand has 4 states, 4 states have (on average 137.5) internal successors, (550), 4 states have internal predecessors, (550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:14:07,357 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:14:07,357 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 308 [2023-08-30 14:14:07,358 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:14:07,798 INFO L130 PetriNetUnfolder]: 3967/6615 cut-off events. [2023-08-30 14:14:07,800 INFO L131 PetriNetUnfolder]: For 459/459 co-relation queries the response was YES. [2023-08-30 14:14:07,806 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13787 conditions, 6615 events. 3967/6615 cut-off events. For 459/459 co-relation queries the response was YES. Maximal size of possible extension queue 281. Compared 42644 event pairs, 1492 based on Foata normal form. 0/4873 useless extension candidates. Maximal degree in co-relation 13699. Up to 5815 conditions per place. [2023-08-30 14:14:07,828 INFO L137 encePairwiseOnDemand]: 300/308 looper letters, 69 selfloop transitions, 6 changer transitions 0/82 dead transitions. [2023-08-30 14:14:07,829 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 82 transitions, 362 flow [2023-08-30 14:14:07,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 14:14:07,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 14:14:07,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 625 transitions. [2023-08-30 14:14:07,831 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5073051948051948 [2023-08-30 14:14:07,831 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 625 transitions. [2023-08-30 14:14:07,832 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 625 transitions. [2023-08-30 14:14:07,835 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:14:07,835 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 625 transitions. [2023-08-30 14:14:07,836 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 156.25) internal successors, (625), 4 states have internal predecessors, (625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:14:07,838 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 308.0) internal successors, (1540), 5 states have internal predecessors, (1540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:14:07,838 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 308.0) internal successors, (1540), 5 states have internal predecessors, (1540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:14:07,838 INFO L175 Difference]: Start difference. First operand has 58 places, 53 transitions, 138 flow. Second operand 4 states and 625 transitions. [2023-08-30 14:14:07,838 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 82 transitions, 362 flow [2023-08-30 14:14:07,840 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 82 transitions, 359 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 14:14:07,841 INFO L231 Difference]: Finished difference. Result has 62 places, 58 transitions, 187 flow [2023-08-30 14:14:07,842 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=308, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=187, PETRI_PLACES=62, PETRI_TRANSITIONS=58} [2023-08-30 14:14:07,843 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 7 predicate places. [2023-08-30 14:14:07,844 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 58 transitions, 187 flow [2023-08-30 14:14:07,844 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 137.5) internal successors, (550), 4 states have internal predecessors, (550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:14:07,844 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:14:07,844 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2023-08-30 14:14:07,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-30 14:14:07,845 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-08-30 14:14:07,845 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:14:07,845 INFO L85 PathProgramCache]: Analyzing trace with hash -1502294053, now seen corresponding path program 1 times [2023-08-30 14:14:07,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:14:07,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47184448] [2023-08-30 14:14:07,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:14:07,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:14:07,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:14:07,880 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 14:14:07,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:14:07,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47184448] [2023-08-30 14:14:07,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [47184448] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:14:07,882 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:14:07,882 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 14:14:07,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38840202] [2023-08-30 14:14:07,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:14:07,883 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:14:07,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:14:07,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:14:07,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:14:07,889 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 308 [2023-08-30 14:14:07,890 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 58 transitions, 187 flow. Second operand has 3 states, 3 states have (on average 143.33333333333334) internal successors, (430), 3 states have internal predecessors, (430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:14:07,890 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:14:07,890 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 308 [2023-08-30 14:14:07,890 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:14:08,286 INFO L130 PetriNetUnfolder]: 3643/5957 cut-off events. [2023-08-30 14:14:08,287 INFO L131 PetriNetUnfolder]: For 1050/1050 co-relation queries the response was YES. [2023-08-30 14:14:08,292 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13811 conditions, 5957 events. 3643/5957 cut-off events. For 1050/1050 co-relation queries the response was YES. Maximal size of possible extension queue 260. Compared 38924 event pairs, 809 based on Foata normal form. 0/4877 useless extension candidates. Maximal degree in co-relation 10553. Up to 4479 conditions per place. [2023-08-30 14:14:08,305 INFO L137 encePairwiseOnDemand]: 304/308 looper letters, 75 selfloop transitions, 4 changer transitions 0/86 dead transitions. [2023-08-30 14:14:08,305 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 86 transitions, 425 flow [2023-08-30 14:14:08,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:14:08,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:14:08,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 495 transitions. [2023-08-30 14:14:08,306 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5357142857142857 [2023-08-30 14:14:08,307 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 495 transitions. [2023-08-30 14:14:08,307 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 495 transitions. [2023-08-30 14:14:08,307 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:14:08,307 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 495 transitions. [2023-08-30 14:14:08,308 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 165.0) internal successors, (495), 3 states have internal predecessors, (495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:14:08,309 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 308.0) internal successors, (1232), 4 states have internal predecessors, (1232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:14:08,310 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 308.0) internal successors, (1232), 4 states have internal predecessors, (1232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:14:08,310 INFO L175 Difference]: Start difference. First operand has 62 places, 58 transitions, 187 flow. Second operand 3 states and 495 transitions. [2023-08-30 14:14:08,310 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 86 transitions, 425 flow [2023-08-30 14:14:08,313 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 86 transitions, 425 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 14:14:08,314 INFO L231 Difference]: Finished difference. Result has 64 places, 58 transitions, 199 flow [2023-08-30 14:14:08,315 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=308, PETRI_DIFFERENCE_MINUEND_FLOW=183, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=199, PETRI_PLACES=64, PETRI_TRANSITIONS=58} [2023-08-30 14:14:08,315 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 9 predicate places. [2023-08-30 14:14:08,315 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 58 transitions, 199 flow [2023-08-30 14:14:08,315 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 143.33333333333334) internal successors, (430), 3 states have internal predecessors, (430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:14:08,316 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:14:08,316 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2023-08-30 14:14:08,316 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-30 14:14:08,316 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-08-30 14:14:08,316 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:14:08,316 INFO L85 PathProgramCache]: Analyzing trace with hash -1502294089, now seen corresponding path program 1 times [2023-08-30 14:14:08,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:14:08,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052798181] [2023-08-30 14:14:08,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:14:08,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:14:08,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:14:08,337 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 14:14:08,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:14:08,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052798181] [2023-08-30 14:14:08,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2052798181] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:14:08,338 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:14:08,338 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 14:14:08,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595776874] [2023-08-30 14:14:08,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:14:08,338 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:14:08,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:14:08,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:14:08,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:14:08,345 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 142 out of 308 [2023-08-30 14:14:08,345 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 58 transitions, 199 flow. Second operand has 3 states, 3 states have (on average 144.33333333333334) internal successors, (433), 3 states have internal predecessors, (433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:14:08,345 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:14:08,346 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 142 of 308 [2023-08-30 14:14:08,346 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:14:08,656 INFO L130 PetriNetUnfolder]: 3319/5565 cut-off events. [2023-08-30 14:14:08,657 INFO L131 PetriNetUnfolder]: For 2523/2523 co-relation queries the response was YES. [2023-08-30 14:14:08,662 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13215 conditions, 5565 events. 3319/5565 cut-off events. For 2523/2523 co-relation queries the response was YES. Maximal size of possible extension queue 232. Compared 34293 event pairs, 3171 based on Foata normal form. 176/4897 useless extension candidates. Maximal degree in co-relation 10140. Up to 5351 conditions per place. [2023-08-30 14:14:08,675 INFO L137 encePairwiseOnDemand]: 306/308 looper letters, 49 selfloop transitions, 1 changer transitions 0/57 dead transitions. [2023-08-30 14:14:08,675 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 57 transitions, 295 flow [2023-08-30 14:14:08,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:14:08,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:14:08,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 470 transitions. [2023-08-30 14:14:08,676 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5086580086580087 [2023-08-30 14:14:08,676 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 470 transitions. [2023-08-30 14:14:08,676 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 470 transitions. [2023-08-30 14:14:08,677 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:14:08,677 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 470 transitions. [2023-08-30 14:14:08,677 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 156.66666666666666) internal successors, (470), 3 states have internal predecessors, (470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:14:08,679 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 308.0) internal successors, (1232), 4 states have internal predecessors, (1232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:14:08,679 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 308.0) internal successors, (1232), 4 states have internal predecessors, (1232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:14:08,679 INFO L175 Difference]: Start difference. First operand has 64 places, 58 transitions, 199 flow. Second operand 3 states and 470 transitions. [2023-08-30 14:14:08,679 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 57 transitions, 295 flow [2023-08-30 14:14:08,682 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 57 transitions, 291 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 14:14:08,682 INFO L231 Difference]: Finished difference. Result has 64 places, 57 transitions, 193 flow [2023-08-30 14:14:08,683 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=308, PETRI_DIFFERENCE_MINUEND_FLOW=191, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=193, PETRI_PLACES=64, PETRI_TRANSITIONS=57} [2023-08-30 14:14:08,683 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 9 predicate places. [2023-08-30 14:14:08,683 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 57 transitions, 193 flow [2023-08-30 14:14:08,683 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 144.33333333333334) internal successors, (433), 3 states have internal predecessors, (433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:14:08,683 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:14:08,683 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:14:08,684 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-30 14:14:08,684 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-08-30 14:14:08,684 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:14:08,684 INFO L85 PathProgramCache]: Analyzing trace with hash -1497121607, now seen corresponding path program 1 times [2023-08-30 14:14:08,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:14:08,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1319399898] [2023-08-30 14:14:08,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:14:08,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:14:08,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:14:08,849 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 14:14:08,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:14:08,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1319399898] [2023-08-30 14:14:08,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1319399898] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:14:08,851 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:14:08,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 14:14:08,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269343362] [2023-08-30 14:14:08,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:14:08,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 14:14:08,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:14:08,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 14:14:08,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-30 14:14:08,935 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 308 [2023-08-30 14:14:08,936 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 57 transitions, 193 flow. Second operand has 6 states, 6 states have (on average 133.5) internal successors, (801), 6 states have internal predecessors, (801), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:14:08,936 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:14:08,936 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 308 [2023-08-30 14:14:08,936 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:14:09,548 INFO L130 PetriNetUnfolder]: 4528/7724 cut-off events. [2023-08-30 14:14:09,548 INFO L131 PetriNetUnfolder]: For 2439/2439 co-relation queries the response was YES. [2023-08-30 14:14:09,559 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17854 conditions, 7724 events. 4528/7724 cut-off events. For 2439/2439 co-relation queries the response was YES. Maximal size of possible extension queue 333. Compared 51984 event pairs, 883 based on Foata normal form. 0/6698 useless extension candidates. Maximal degree in co-relation 17838. Up to 4313 conditions per place. [2023-08-30 14:14:09,583 INFO L137 encePairwiseOnDemand]: 291/308 looper letters, 158 selfloop transitions, 28 changer transitions 0/193 dead transitions. [2023-08-30 14:14:09,583 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 193 transitions, 978 flow [2023-08-30 14:14:09,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-30 14:14:09,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-30 14:14:09,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1374 transitions. [2023-08-30 14:14:09,587 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49567099567099565 [2023-08-30 14:14:09,587 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1374 transitions. [2023-08-30 14:14:09,587 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1374 transitions. [2023-08-30 14:14:09,588 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:14:09,588 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1374 transitions. [2023-08-30 14:14:09,591 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 152.66666666666666) internal successors, (1374), 9 states have internal predecessors, (1374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:14:09,594 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 308.0) internal successors, (3080), 10 states have internal predecessors, (3080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:14:09,594 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 308.0) internal successors, (3080), 10 states have internal predecessors, (3080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:14:09,594 INFO L175 Difference]: Start difference. First operand has 64 places, 57 transitions, 193 flow. Second operand 9 states and 1374 transitions. [2023-08-30 14:14:09,594 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 193 transitions, 978 flow [2023-08-30 14:14:09,600 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 193 transitions, 977 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 14:14:09,602 INFO L231 Difference]: Finished difference. Result has 77 places, 79 transitions, 424 flow [2023-08-30 14:14:09,602 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=308, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=424, PETRI_PLACES=77, PETRI_TRANSITIONS=79} [2023-08-30 14:14:09,603 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 22 predicate places. [2023-08-30 14:14:09,603 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 79 transitions, 424 flow [2023-08-30 14:14:09,604 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 133.5) internal successors, (801), 6 states have internal predecessors, (801), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:14:09,604 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:14:09,604 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:14:09,604 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-30 14:14:09,604 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-08-30 14:14:09,604 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:14:09,605 INFO L85 PathProgramCache]: Analyzing trace with hash -1497121588, now seen corresponding path program 1 times [2023-08-30 14:14:09,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:14:09,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615069935] [2023-08-30 14:14:09,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:14:09,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:14:09,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:14:09,675 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 14:14:09,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:14:09,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615069935] [2023-08-30 14:14:09,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1615069935] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:14:09,676 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:14:09,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 14:14:09,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84985377] [2023-08-30 14:14:09,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:14:09,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:14:09,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:14:09,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:14:09,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:14:09,700 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 139 out of 308 [2023-08-30 14:14:09,700 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 79 transitions, 424 flow. Second operand has 3 states, 3 states have (on average 142.0) internal successors, (426), 3 states have internal predecessors, (426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:14:09,700 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:14:09,700 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 139 of 308 [2023-08-30 14:14:09,700 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:14:10,220 INFO L130 PetriNetUnfolder]: 4656/8250 cut-off events. [2023-08-30 14:14:10,221 INFO L131 PetriNetUnfolder]: For 10159/10159 co-relation queries the response was YES. [2023-08-30 14:14:10,237 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23896 conditions, 8250 events. 4656/8250 cut-off events. For 10159/10159 co-relation queries the response was YES. Maximal size of possible extension queue 360. Compared 58206 event pairs, 1671 based on Foata normal form. 417/8550 useless extension candidates. Maximal degree in co-relation 23873. Up to 4568 conditions per place. [2023-08-30 14:14:10,260 INFO L137 encePairwiseOnDemand]: 296/308 looper letters, 96 selfloop transitions, 25 changer transitions 0/128 dead transitions. [2023-08-30 14:14:10,260 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 128 transitions, 903 flow [2023-08-30 14:14:10,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:14:10,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:14:10,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 501 transitions. [2023-08-30 14:14:10,262 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5422077922077922 [2023-08-30 14:14:10,262 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 501 transitions. [2023-08-30 14:14:10,262 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 501 transitions. [2023-08-30 14:14:10,262 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:14:10,263 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 501 transitions. [2023-08-30 14:14:10,263 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 167.0) internal successors, (501), 3 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:14:10,272 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 308.0) internal successors, (1232), 4 states have internal predecessors, (1232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:14:10,272 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 308.0) internal successors, (1232), 4 states have internal predecessors, (1232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:14:10,273 INFO L175 Difference]: Start difference. First operand has 77 places, 79 transitions, 424 flow. Second operand 3 states and 501 transitions. [2023-08-30 14:14:10,273 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 128 transitions, 903 flow [2023-08-30 14:14:10,293 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 128 transitions, 886 flow, removed 3 selfloop flow, removed 2 redundant places. [2023-08-30 14:14:10,295 INFO L231 Difference]: Finished difference. Result has 79 places, 94 transitions, 653 flow [2023-08-30 14:14:10,296 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=308, PETRI_DIFFERENCE_MINUEND_FLOW=409, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=653, PETRI_PLACES=79, PETRI_TRANSITIONS=94} [2023-08-30 14:14:10,296 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 24 predicate places. [2023-08-30 14:14:10,297 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 94 transitions, 653 flow [2023-08-30 14:14:10,297 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 142.0) internal successors, (426), 3 states have internal predecessors, (426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:14:10,297 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:14:10,297 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-30 14:14:10,297 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-30 14:14:10,297 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-08-30 14:14:10,298 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:14:10,298 INFO L85 PathProgramCache]: Analyzing trace with hash -595548358, now seen corresponding path program 1 times [2023-08-30 14:14:10,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:14:10,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25790672] [2023-08-30 14:14:10,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:14:10,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:14:10,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 14:14:10,312 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-30 14:14:10,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 14:14:10,327 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-30 14:14:10,327 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-30 14:14:10,328 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 17 remaining) [2023-08-30 14:14:10,328 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 17 remaining) [2023-08-30 14:14:10,328 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 17 remaining) [2023-08-30 14:14:10,330 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 17 remaining) [2023-08-30 14:14:10,330 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 17 remaining) [2023-08-30 14:14:10,331 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 17 remaining) [2023-08-30 14:14:10,331 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 17 remaining) [2023-08-30 14:14:10,331 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 17 remaining) [2023-08-30 14:14:10,331 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 17 remaining) [2023-08-30 14:14:10,331 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 17 remaining) [2023-08-30 14:14:10,331 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 17 remaining) [2023-08-30 14:14:10,332 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 17 remaining) [2023-08-30 14:14:10,332 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 17 remaining) [2023-08-30 14:14:10,333 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 17 remaining) [2023-08-30 14:14:10,333 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 17 remaining) [2023-08-30 14:14:10,333 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 17 remaining) [2023-08-30 14:14:10,333 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 17 remaining) [2023-08-30 14:14:10,333 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-30 14:14:10,333 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:14:10,334 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-30 14:14:10,334 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-08-30 14:14:10,357 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-30 14:14:10,363 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 191 places, 210 transitions, 450 flow [2023-08-30 14:14:10,392 INFO L130 PetriNetUnfolder]: 50/423 cut-off events. [2023-08-30 14:14:10,392 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-08-30 14:14:10,395 INFO L83 FinitePrefix]: Finished finitePrefix Result has 451 conditions, 423 events. 50/423 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1433 event pairs, 1 based on Foata normal form. 0/337 useless extension candidates. Maximal degree in co-relation 280. Up to 16 conditions per place. [2023-08-30 14:14:10,395 INFO L82 GeneralOperation]: Start removeDead. Operand has 191 places, 210 transitions, 450 flow [2023-08-30 14:14:10,396 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 191 places, 210 transitions, 450 flow [2023-08-30 14:14:10,397 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 14:14:10,397 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 191 places, 210 transitions, 450 flow [2023-08-30 14:14:10,397 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 191 places, 210 transitions, 450 flow [2023-08-30 14:14:10,397 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 191 places, 210 transitions, 450 flow [2023-08-30 14:14:10,424 INFO L130 PetriNetUnfolder]: 50/423 cut-off events. [2023-08-30 14:14:10,424 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-08-30 14:14:10,426 INFO L83 FinitePrefix]: Finished finitePrefix Result has 451 conditions, 423 events. 50/423 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1433 event pairs, 1 based on Foata normal form. 0/337 useless extension candidates. Maximal degree in co-relation 280. Up to 16 conditions per place. [2023-08-30 14:14:10,438 INFO L119 LiptonReduction]: Number of co-enabled transitions 22800 [2023-08-30 14:14:13,107 INFO L134 LiptonReduction]: Checked pairs total: 51923 [2023-08-30 14:14:13,107 INFO L136 LiptonReduction]: Total number of compositions: 174 [2023-08-30 14:14:13,109 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 14:14:13,109 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;@48504028, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 14:14:13,109 INFO L358 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2023-08-30 14:14:13,110 INFO L130 PetriNetUnfolder]: 1/12 cut-off events. [2023-08-30 14:14:13,110 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 14:14:13,111 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:14:13,111 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 14:14:13,111 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-30 14:14:13,111 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:14:13,111 INFO L85 PathProgramCache]: Analyzing trace with hash 1201318631, now seen corresponding path program 1 times [2023-08-30 14:14:13,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:14:13,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407875439] [2023-08-30 14:14:13,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:14:13,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:14:13,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:14:13,128 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 14:14:13,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:14:13,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407875439] [2023-08-30 14:14:13,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [407875439] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:14:13,128 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:14:13,128 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 14:14:13,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815221852] [2023-08-30 14:14:13,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:14:13,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:14:13,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:14:13,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:14:13,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:14:13,135 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 176 out of 384 [2023-08-30 14:14:13,136 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 89 transitions, 208 flow. Second operand has 3 states, 3 states have (on average 177.33333333333334) internal successors, (532), 3 states have internal predecessors, (532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:14:13,136 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:14:13,136 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 176 of 384 [2023-08-30 14:14:13,136 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:14:19,676 INFO L130 PetriNetUnfolder]: 97923/138319 cut-off events. [2023-08-30 14:14:19,676 INFO L131 PetriNetUnfolder]: For 2623/2623 co-relation queries the response was YES. [2023-08-30 14:14:19,819 INFO L83 FinitePrefix]: Finished finitePrefix Result has 276033 conditions, 138319 events. 97923/138319 cut-off events. For 2623/2623 co-relation queries the response was YES. Maximal size of possible extension queue 3395. Compared 991975 event pairs, 97667 based on Foata normal form. 10168/109141 useless extension candidates. Maximal degree in co-relation 65215. Up to 136021 conditions per place. [2023-08-30 14:14:20,230 INFO L137 encePairwiseOnDemand]: 362/384 looper letters, 59 selfloop transitions, 1 changer transitions 0/68 dead transitions. [2023-08-30 14:14:20,231 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 68 transitions, 286 flow [2023-08-30 14:14:20,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:14:20,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:14:20,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 609 transitions. [2023-08-30 14:14:20,233 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5286458333333334 [2023-08-30 14:14:20,233 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 609 transitions. [2023-08-30 14:14:20,233 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 609 transitions. [2023-08-30 14:14:20,233 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:14:20,233 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 609 transitions. [2023-08-30 14:14:20,235 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 203.0) internal successors, (609), 3 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:14:20,237 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 384.0) internal successors, (1536), 4 states have internal predecessors, (1536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:14:20,237 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 384.0) internal successors, (1536), 4 states have internal predecessors, (1536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:14:20,237 INFO L175 Difference]: Start difference. First operand has 73 places, 89 transitions, 208 flow. Second operand 3 states and 609 transitions. [2023-08-30 14:14:20,237 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 68 transitions, 286 flow [2023-08-30 14:14:20,239 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 68 transitions, 286 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 14:14:20,241 INFO L231 Difference]: Finished difference. Result has 74 places, 68 transitions, 168 flow [2023-08-30 14:14:20,241 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=384, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=168, PETRI_PLACES=74, PETRI_TRANSITIONS=68} [2023-08-30 14:14:20,243 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, 1 predicate places. [2023-08-30 14:14:20,243 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 68 transitions, 168 flow [2023-08-30 14:14:20,244 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 177.33333333333334) internal successors, (532), 3 states have internal predecessors, (532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:14:20,244 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:14:20,244 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 14:14:20,244 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-30 14:14:20,244 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-30 14:14:20,244 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:14:20,244 INFO L85 PathProgramCache]: Analyzing trace with hash 1201318672, now seen corresponding path program 1 times [2023-08-30 14:14:20,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:14:20,245 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [382003283] [2023-08-30 14:14:20,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:14:20,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:14:20,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:14:20,266 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 14:14:20,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:14:20,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [382003283] [2023-08-30 14:14:20,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [382003283] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:14:20,267 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:14:20,267 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 14:14:20,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284354904] [2023-08-30 14:14:20,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:14:20,268 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:14:20,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:14:20,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:14:20,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:14:20,273 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 176 out of 384 [2023-08-30 14:14:20,274 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 68 transitions, 168 flow. Second operand has 3 states, 3 states have (on average 177.33333333333334) internal successors, (532), 3 states have internal predecessors, (532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:14:20,274 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:14:20,274 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 176 of 384 [2023-08-30 14:14:20,274 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:14:26,517 INFO L130 PetriNetUnfolder]: 97909/138682 cut-off events. [2023-08-30 14:14:26,518 INFO L131 PetriNetUnfolder]: For 2657/2657 co-relation queries the response was YES. [2023-08-30 14:14:26,683 INFO L83 FinitePrefix]: Finished finitePrefix Result has 276393 conditions, 138682 events. 97909/138682 cut-off events. For 2657/2657 co-relation queries the response was YES. Maximal size of possible extension queue 3420. Compared 999274 event pairs, 63646 based on Foata normal form. 0/99419 useless extension candidates. Maximal degree in co-relation 276384. Up to 135974 conditions per place. [2023-08-30 14:14:27,250 INFO L137 encePairwiseOnDemand]: 380/384 looper letters, 73 selfloop transitions, 2 changer transitions 0/83 dead transitions. [2023-08-30 14:14:27,251 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 83 transitions, 348 flow [2023-08-30 14:14:27,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:14:27,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:14:27,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 605 transitions. [2023-08-30 14:14:27,252 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5251736111111112 [2023-08-30 14:14:27,253 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 605 transitions. [2023-08-30 14:14:27,253 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 605 transitions. [2023-08-30 14:14:27,253 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:14:27,253 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 605 transitions. [2023-08-30 14:14:27,254 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 201.66666666666666) internal successors, (605), 3 states have internal predecessors, (605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:14:27,255 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 384.0) internal successors, (1536), 4 states have internal predecessors, (1536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:14:27,256 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 384.0) internal successors, (1536), 4 states have internal predecessors, (1536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:14:27,256 INFO L175 Difference]: Start difference. First operand has 74 places, 68 transitions, 168 flow. Second operand 3 states and 605 transitions. [2023-08-30 14:14:27,256 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 83 transitions, 348 flow [2023-08-30 14:14:27,258 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 83 transitions, 347 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 14:14:27,258 INFO L231 Difference]: Finished difference. Result has 76 places, 69 transitions, 181 flow [2023-08-30 14:14:27,259 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=384, PETRI_DIFFERENCE_MINUEND_FLOW=167, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=181, PETRI_PLACES=76, PETRI_TRANSITIONS=69} [2023-08-30 14:14:27,259 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, 3 predicate places. [2023-08-30 14:14:27,259 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 69 transitions, 181 flow [2023-08-30 14:14:27,259 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 177.33333333333334) internal successors, (532), 3 states have internal predecessors, (532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:14:27,260 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:14:27,260 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:14:27,260 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-30 14:14:27,260 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-30 14:14:27,260 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:14:27,260 INFO L85 PathProgramCache]: Analyzing trace with hash -871640088, now seen corresponding path program 1 times [2023-08-30 14:14:27,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:14:27,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1659838996] [2023-08-30 14:14:27,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:14:27,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:14:27,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:14:27,316 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 14:14:27,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:14:27,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1659838996] [2023-08-30 14:14:27,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1659838996] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:14:27,317 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:14:27,317 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 14:14:27,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133988088] [2023-08-30 14:14:27,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:14:27,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 14:14:27,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:14:27,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 14:14:27,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-30 14:14:27,354 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 168 out of 384 [2023-08-30 14:14:27,355 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 69 transitions, 181 flow. Second operand has 4 states, 4 states have (on average 169.5) internal successors, (678), 4 states have internal predecessors, (678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:14:27,355 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:14:27,355 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 168 of 384 [2023-08-30 14:14:27,355 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:14:33,347 INFO L130 PetriNetUnfolder]: 93417/131135 cut-off events. [2023-08-30 14:14:33,348 INFO L131 PetriNetUnfolder]: For 8636/8636 co-relation queries the response was YES. [2023-08-30 14:14:33,557 INFO L83 FinitePrefix]: Finished finitePrefix Result has 271644 conditions, 131135 events. 93417/131135 cut-off events. For 8636/8636 co-relation queries the response was YES. Maximal size of possible extension queue 3404. Compared 921859 event pairs, 45332 based on Foata normal form. 176/97696 useless extension candidates. Maximal degree in co-relation 271633. Up to 127795 conditions per place. [2023-08-30 14:14:33,939 INFO L137 encePairwiseOnDemand]: 373/384 looper letters, 88 selfloop transitions, 8 changer transitions 0/104 dead transitions. [2023-08-30 14:14:33,939 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 104 transitions, 464 flow [2023-08-30 14:14:33,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 14:14:33,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 14:14:33,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 778 transitions. [2023-08-30 14:14:33,947 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5065104166666666 [2023-08-30 14:14:33,947 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 778 transitions. [2023-08-30 14:14:33,947 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 778 transitions. [2023-08-30 14:14:33,947 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:14:33,947 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 778 transitions. [2023-08-30 14:14:33,949 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 194.5) internal successors, (778), 4 states have internal predecessors, (778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:14:33,950 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 384.0) internal successors, (1920), 5 states have internal predecessors, (1920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:14:33,951 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 384.0) internal successors, (1920), 5 states have internal predecessors, (1920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:14:33,951 INFO L175 Difference]: Start difference. First operand has 76 places, 69 transitions, 181 flow. Second operand 4 states and 778 transitions. [2023-08-30 14:14:33,951 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 104 transitions, 464 flow [2023-08-30 14:14:33,957 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 104 transitions, 461 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 14:14:33,959 INFO L231 Difference]: Finished difference. Result has 80 places, 76 transitions, 250 flow [2023-08-30 14:14:33,960 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=384, PETRI_DIFFERENCE_MINUEND_FLOW=179, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=250, PETRI_PLACES=80, PETRI_TRANSITIONS=76} [2023-08-30 14:14:33,960 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, 7 predicate places. [2023-08-30 14:14:33,960 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 76 transitions, 250 flow [2023-08-30 14:14:33,961 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 169.5) internal successors, (678), 4 states have internal predecessors, (678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:14:33,961 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:14:33,961 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2023-08-30 14:14:33,961 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-30 14:14:33,961 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-30 14:14:33,961 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:14:33,962 INFO L85 PathProgramCache]: Analyzing trace with hash 1466802933, now seen corresponding path program 1 times [2023-08-30 14:14:33,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:14:33,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053392877] [2023-08-30 14:14:33,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:14:33,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:14:33,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:14:33,999 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 14:14:34,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:14:34,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1053392877] [2023-08-30 14:14:34,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1053392877] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:14:34,000 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:14:34,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 14:14:34,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604189081] [2023-08-30 14:14:34,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:14:34,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:14:34,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:14:34,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:14:34,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:14:34,008 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 175 out of 384 [2023-08-30 14:14:34,008 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 76 transitions, 250 flow. Second operand has 3 states, 3 states have (on average 177.33333333333334) internal successors, (532), 3 states have internal predecessors, (532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:14:34,008 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:14:34,008 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 175 of 384 [2023-08-30 14:14:34,008 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:14:40,070 INFO L130 PetriNetUnfolder]: 85258/119673 cut-off events. [2023-08-30 14:14:40,070 INFO L131 PetriNetUnfolder]: For 27436/27452 co-relation queries the response was YES. [2023-08-30 14:14:40,287 INFO L83 FinitePrefix]: Finished finitePrefix Result has 279864 conditions, 119673 events. 85258/119673 cut-off events. For 27436/27452 co-relation queries the response was YES. Maximal size of possible extension queue 3049. Compared 866902 event pairs, 14047 based on Foata normal form. 0/98665 useless extension candidates. Maximal degree in co-relation 279850. Up to 99220 conditions per place. [2023-08-30 14:14:40,618 INFO L137 encePairwiseOnDemand]: 380/384 looper letters, 107 selfloop transitions, 4 changer transitions 0/119 dead transitions. [2023-08-30 14:14:40,618 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 119 transitions, 595 flow [2023-08-30 14:14:40,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:14:40,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:14:40,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 626 transitions. [2023-08-30 14:14:40,620 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5434027777777778 [2023-08-30 14:14:40,620 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 626 transitions. [2023-08-30 14:14:40,620 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 626 transitions. [2023-08-30 14:14:40,620 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:14:40,620 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 626 transitions. [2023-08-30 14:14:40,621 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 208.66666666666666) internal successors, (626), 3 states have internal predecessors, (626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:14:40,622 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 384.0) internal successors, (1536), 4 states have internal predecessors, (1536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:14:40,623 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 384.0) internal successors, (1536), 4 states have internal predecessors, (1536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:14:40,623 INFO L175 Difference]: Start difference. First operand has 80 places, 76 transitions, 250 flow. Second operand 3 states and 626 transitions. [2023-08-30 14:14:40,623 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 119 transitions, 595 flow [2023-08-30 14:14:40,681 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 119 transitions, 595 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 14:14:40,682 INFO L231 Difference]: Finished difference. Result has 82 places, 76 transitions, 262 flow [2023-08-30 14:14:40,682 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=384, PETRI_DIFFERENCE_MINUEND_FLOW=246, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=262, PETRI_PLACES=82, PETRI_TRANSITIONS=76} [2023-08-30 14:14:40,683 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, 9 predicate places. [2023-08-30 14:14:40,683 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 76 transitions, 262 flow [2023-08-30 14:14:40,683 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 177.33333333333334) internal successors, (532), 3 states have internal predecessors, (532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:14:40,683 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:14:40,683 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:14:40,684 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-30 14:14:40,684 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-30 14:14:40,684 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:14:40,684 INFO L85 PathProgramCache]: Analyzing trace with hash 2059375654, now seen corresponding path program 1 times [2023-08-30 14:14:40,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:14:40,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [539173821] [2023-08-30 14:14:40,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:14:40,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:14:40,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:14:40,726 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 14:14:40,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:14:40,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [539173821] [2023-08-30 14:14:40,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [539173821] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:14:40,726 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:14:40,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 14:14:40,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845441234] [2023-08-30 14:14:40,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:14:40,727 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:14:40,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:14:40,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:14:40,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:14:40,755 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 171 out of 384 [2023-08-30 14:14:40,756 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 76 transitions, 262 flow. Second operand has 3 states, 3 states have (on average 174.0) internal successors, (522), 3 states have internal predecessors, (522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:14:40,756 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:14:40,756 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 171 of 384 [2023-08-30 14:14:40,756 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:14:49,857 INFO L130 PetriNetUnfolder]: 116309/169245 cut-off events. [2023-08-30 14:14:49,857 INFO L131 PetriNetUnfolder]: For 71982/72144 co-relation queries the response was YES. [2023-08-30 14:14:50,210 INFO L83 FinitePrefix]: Finished finitePrefix Result has 407921 conditions, 169245 events. 116309/169245 cut-off events. For 71982/72144 co-relation queries the response was YES. Maximal size of possible extension queue 4071. Compared 1311804 event pairs, 45238 based on Foata normal form. 126/145227 useless extension candidates. Maximal degree in co-relation 407904. Up to 99508 conditions per place. [2023-08-30 14:14:50,677 INFO L137 encePairwiseOnDemand]: 367/384 looper letters, 102 selfloop transitions, 21 changer transitions 0/131 dead transitions. [2023-08-30 14:14:50,678 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 131 transitions, 686 flow [2023-08-30 14:14:50,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:14:50,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:14:50,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 629 transitions. [2023-08-30 14:14:50,679 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5460069444444444 [2023-08-30 14:14:50,679 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 629 transitions. [2023-08-30 14:14:50,679 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 629 transitions. [2023-08-30 14:14:50,680 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:14:50,680 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 629 transitions. [2023-08-30 14:14:50,681 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 209.66666666666666) internal successors, (629), 3 states have internal predecessors, (629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:14:50,683 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 384.0) internal successors, (1536), 4 states have internal predecessors, (1536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:14:50,683 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 384.0) internal successors, (1536), 4 states have internal predecessors, (1536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:14:50,683 INFO L175 Difference]: Start difference. First operand has 82 places, 76 transitions, 262 flow. Second operand 3 states and 629 transitions. [2023-08-30 14:14:50,683 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 131 transitions, 686 flow [2023-08-30 14:14:50,776 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 131 transitions, 679 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 14:14:50,778 INFO L231 Difference]: Finished difference. Result has 85 places, 89 transitions, 420 flow [2023-08-30 14:14:50,778 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=384, PETRI_DIFFERENCE_MINUEND_FLOW=258, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=420, PETRI_PLACES=85, PETRI_TRANSITIONS=89} [2023-08-30 14:14:50,778 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, 12 predicate places. [2023-08-30 14:14:50,779 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 89 transitions, 420 flow [2023-08-30 14:14:50,779 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 174.0) internal successors, (522), 3 states have internal predecessors, (522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:14:50,779 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:14:50,779 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:14:50,779 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-30 14:14:50,779 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-30 14:14:50,779 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:14:50,779 INFO L85 PathProgramCache]: Analyzing trace with hash 2059375628, now seen corresponding path program 1 times [2023-08-30 14:14:50,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:14:50,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363539017] [2023-08-30 14:14:50,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:14:50,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:14:50,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:14:50,878 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 14:14:50,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:14:50,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363539017] [2023-08-30 14:14:50,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1363539017] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:14:50,879 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:14:50,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 14:14:50,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290904486] [2023-08-30 14:14:50,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:14:50,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 14:14:50,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:14:50,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 14:14:50,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-30 14:14:50,976 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 164 out of 384 [2023-08-30 14:14:50,977 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 89 transitions, 420 flow. Second operand has 6 states, 6 states have (on average 165.5) internal successors, (993), 6 states have internal predecessors, (993), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:14:50,977 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:14:50,977 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 164 of 384 [2023-08-30 14:14:50,977 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:15:03,457 INFO L130 PetriNetUnfolder]: 149300/221674 cut-off events. [2023-08-30 14:15:03,457 INFO L131 PetriNetUnfolder]: For 217315/217478 co-relation queries the response was YES. [2023-08-30 14:15:04,048 INFO L83 FinitePrefix]: Finished finitePrefix Result has 600975 conditions, 221674 events. 149300/221674 cut-off events. For 217315/217478 co-relation queries the response was YES. Maximal size of possible extension queue 5620. Compared 1835610 event pairs, 39013 based on Foata normal form. 6565/225371 useless extension candidates. Maximal degree in co-relation 600955. Up to 147904 conditions per place. [2023-08-30 14:15:04,932 INFO L137 encePairwiseOnDemand]: 361/384 looper letters, 243 selfloop transitions, 53 changer transitions 0/304 dead transitions. [2023-08-30 14:15:04,932 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 304 transitions, 1859 flow [2023-08-30 14:15:04,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-30 14:15:04,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-30 14:15:04,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1740 transitions. [2023-08-30 14:15:04,935 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5034722222222222 [2023-08-30 14:15:04,935 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1740 transitions. [2023-08-30 14:15:04,935 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1740 transitions. [2023-08-30 14:15:04,936 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:15:04,936 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1740 transitions. [2023-08-30 14:15:04,938 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 193.33333333333334) internal successors, (1740), 9 states have internal predecessors, (1740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:15:04,941 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 384.0) internal successors, (3840), 10 states have internal predecessors, (3840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:15:04,941 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 384.0) internal successors, (3840), 10 states have internal predecessors, (3840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:15:04,941 INFO L175 Difference]: Start difference. First operand has 85 places, 89 transitions, 420 flow. Second operand 9 states and 1740 transitions. [2023-08-30 14:15:04,941 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 304 transitions, 1859 flow [2023-08-30 14:15:05,326 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 304 transitions, 1763 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 14:15:05,328 INFO L231 Difference]: Finished difference. Result has 97 places, 134 transitions, 928 flow [2023-08-30 14:15:05,329 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=384, PETRI_DIFFERENCE_MINUEND_FLOW=378, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=928, PETRI_PLACES=97, PETRI_TRANSITIONS=134} [2023-08-30 14:15:05,329 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, 24 predicate places. [2023-08-30 14:15:05,329 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 134 transitions, 928 flow [2023-08-30 14:15:05,329 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 165.5) internal successors, (993), 6 states have internal predecessors, (993), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:15:05,329 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:15:05,330 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:15:05,330 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-30 14:15:05,330 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-30 14:15:05,330 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:15:05,330 INFO L85 PathProgramCache]: Analyzing trace with hash -1617198769, now seen corresponding path program 1 times [2023-08-30 14:15:05,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:15:05,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [867752199] [2023-08-30 14:15:05,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:15:05,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:15:05,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:15:05,486 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 14:15:05,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:15:05,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [867752199] [2023-08-30 14:15:05,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [867752199] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 14:15:05,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1190104867] [2023-08-30 14:15:05,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:15:05,487 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:15:05,487 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:15:05,489 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 14:15:05,492 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 14:15:05,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:15:05,546 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 27 conjunts are in the unsatisfiable core [2023-08-30 14:15:05,548 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 14:15:05,602 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-30 14:15:05,602 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-08-30 14:15:05,637 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-30 14:15:05,729 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2023-08-30 14:15:05,759 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-30 14:15:05,776 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 14:15:05,777 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 14:15:05,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1190104867] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:15:05,777 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 14:15:05,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 8 [2023-08-30 14:15:05,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123296735] [2023-08-30 14:15:05,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:15:05,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 14:15:05,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:15:05,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 14:15:05,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2023-08-30 14:15:05,887 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 165 out of 384 [2023-08-30 14:15:05,887 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 134 transitions, 928 flow. Second operand has 6 states, 6 states have (on average 166.83333333333334) internal successors, (1001), 6 states have internal predecessors, (1001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:15:05,888 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:15:05,888 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 165 of 384 [2023-08-30 14:15:05,888 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:15:20,115 INFO L130 PetriNetUnfolder]: 146151/216188 cut-off events. [2023-08-30 14:15:20,115 INFO L131 PetriNetUnfolder]: For 422743/422991 co-relation queries the response was YES. [2023-08-30 14:15:20,858 INFO L83 FinitePrefix]: Finished finitePrefix Result has 699747 conditions, 216188 events. 146151/216188 cut-off events. For 422743/422991 co-relation queries the response was YES. Maximal size of possible extension queue 5517. Compared 1759570 event pairs, 55574 based on Foata normal form. 787/214129 useless extension candidates. Maximal degree in co-relation 699721. Up to 202894 conditions per place. [2023-08-30 14:15:21,776 INFO L137 encePairwiseOnDemand]: 374/384 looper letters, 198 selfloop transitions, 36 changer transitions 0/242 dead transitions. [2023-08-30 14:15:21,776 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 242 transitions, 2060 flow [2023-08-30 14:15:21,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 14:15:21,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 14:15:21,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1132 transitions. [2023-08-30 14:15:21,778 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4913194444444444 [2023-08-30 14:15:21,778 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1132 transitions. [2023-08-30 14:15:21,778 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1132 transitions. [2023-08-30 14:15:21,779 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:15:21,779 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1132 transitions. [2023-08-30 14:15:21,780 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 188.66666666666666) internal successors, (1132), 6 states have internal predecessors, (1132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:15:21,782 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 384.0) internal successors, (2688), 7 states have internal predecessors, (2688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:15:21,782 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 384.0) internal successors, (2688), 7 states have internal predecessors, (2688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:15:21,783 INFO L175 Difference]: Start difference. First operand has 97 places, 134 transitions, 928 flow. Second operand 6 states and 1132 transitions. [2023-08-30 14:15:21,783 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 242 transitions, 2060 flow [2023-08-30 14:15:22,634 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 242 transitions, 2017 flow, removed 14 selfloop flow, removed 2 redundant places. [2023-08-30 14:15:22,636 INFO L231 Difference]: Finished difference. Result has 102 places, 161 transitions, 1274 flow [2023-08-30 14:15:22,636 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=384, PETRI_DIFFERENCE_MINUEND_FLOW=901, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1274, PETRI_PLACES=102, PETRI_TRANSITIONS=161} [2023-08-30 14:15:22,636 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, 29 predicate places. [2023-08-30 14:15:22,636 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 161 transitions, 1274 flow [2023-08-30 14:15:22,637 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 166.83333333333334) internal successors, (1001), 6 states have internal predecessors, (1001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:15:22,637 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:15:22,637 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:15:22,642 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-08-30 14:15:22,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-08-30 14:15:22,837 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-30 14:15:22,838 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:15:22,838 INFO L85 PathProgramCache]: Analyzing trace with hash -1617198743, now seen corresponding path program 1 times [2023-08-30 14:15:22,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:15:22,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [938269974] [2023-08-30 14:15:22,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:15:22,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:15:22,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:15:23,057 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 14:15:23,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:15:23,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [938269974] [2023-08-30 14:15:23,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [938269974] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 14:15:23,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1420421707] [2023-08-30 14:15:23,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:15:23,058 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:15:23,058 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:15:23,059 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 14:15:23,061 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 14:15:23,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:15:23,127 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 18 conjunts are in the unsatisfiable core [2023-08-30 14:15:23,128 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 14:15:23,140 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-30 14:15:23,140 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-08-30 14:15:23,179 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-30 14:15:23,202 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-30 14:15:23,216 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 14:15:23,216 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 14:15:23,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1420421707] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:15:23,217 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 14:15:23,217 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 8 [2023-08-30 14:15:23,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443883730] [2023-08-30 14:15:23,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:15:23,217 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 14:15:23,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:15:23,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 14:15:23,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2023-08-30 14:15:23,280 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 168 out of 384 [2023-08-30 14:15:23,281 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 161 transitions, 1274 flow. Second operand has 5 states, 5 states have (on average 170.2) internal successors, (851), 5 states have internal predecessors, (851), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:15:23,281 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:15:23,281 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 168 of 384 [2023-08-30 14:15:23,281 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand