./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/goblint-regression/13-privatized_68-pfscan_protected_loop_minimal_interval_true.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/goblint-regression/13-privatized_68-pfscan_protected_loop_minimal_interval_true.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 6aeaf730cbe4eb831d189bfd9925d1660c7714b9e685f389bc2495c0943d6472 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-30 09:49:00,477 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 09:49:00,479 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 09:49:00,513 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 09:49:00,514 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 09:49:00,516 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 09:49:00,518 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 09:49:00,520 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 09:49:00,522 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 09:49:00,526 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 09:49:00,526 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 09:49:00,528 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 09:49:00,528 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 09:49:00,530 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 09:49:00,530 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 09:49:00,533 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 09:49:00,534 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 09:49:00,535 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 09:49:00,536 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 09:49:00,539 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 09:49:00,540 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 09:49:00,549 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 09:49:00,550 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 09:49:00,550 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 09:49:00,555 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 09:49:00,557 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 09:49:00,557 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 09:49:00,557 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 09:49:00,558 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 09:49:00,559 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 09:49:00,559 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 09:49:00,563 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 09:49:00,565 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 09:49:00,566 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 09:49:00,567 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 09:49:00,567 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 09:49:00,568 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 09:49:00,568 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 09:49:00,569 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 09:49:00,569 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 09:49:00,570 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 09:49:00,571 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-08-30 09:49:00,593 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 09:49:00,593 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 09:49:00,594 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 09:49:00,594 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 09:49:00,595 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 09:49:00,595 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 09:49:00,595 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 09:49:00,596 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 09:49:00,596 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 09:49:00,596 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 09:49:00,597 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 09:49:00,597 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 09:49:00,597 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 09:49:00,597 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 09:49:00,597 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 09:49:00,597 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 09:49:00,598 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 09:49:00,598 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 09:49:00,598 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-08-30 09:49:00,598 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 09:49:00,598 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 09:49:00,598 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 09:49:00,598 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 09:49:00,599 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 09:49:00,599 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 09:49:00,599 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 09:49:00,599 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 09:49:00,599 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 09:49:00,599 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 09:49:00,599 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 09:49:00,600 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 09:49:00,600 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 09:49:00,600 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 09:49:00,600 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 09:49:00,600 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 09:49:00,600 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 09:49:00,601 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 09:49:00,601 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6aeaf730cbe4eb831d189bfd9925d1660c7714b9e685f389bc2495c0943d6472 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-30 09:49:00,812 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 09:49:00,824 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 09:49:00,825 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 09:49:00,826 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 09:49:00,826 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 09:49:00,827 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/13-privatized_68-pfscan_protected_loop_minimal_interval_true.i [2023-08-30 09:49:01,812 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 09:49:02,043 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 09:49:02,044 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_68-pfscan_protected_loop_minimal_interval_true.i [2023-08-30 09:49:02,054 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f64d4ecd5/15dcb1c7684a479085b4b6b9f58aaeb0/FLAG7f8f84ed5 [2023-08-30 09:49:02,064 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f64d4ecd5/15dcb1c7684a479085b4b6b9f58aaeb0 [2023-08-30 09:49:02,065 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 09:49:02,067 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 09:49:02,068 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 09:49:02,068 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 09:49:02,070 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 09:49:02,070 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 09:49:02" (1/1) ... [2023-08-30 09:49:02,071 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@58d0e77c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 09:49:02, skipping insertion in model container [2023-08-30 09:49:02,071 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 09:49:02" (1/1) ... [2023-08-30 09:49:02,076 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 09:49:02,097 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 09:49:02,216 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/13-privatized_68-pfscan_protected_loop_minimal_interval_true.i[1115,1128] [2023-08-30 09:49:02,362 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 09:49:02,370 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 09:49:02,380 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/13-privatized_68-pfscan_protected_loop_minimal_interval_true.i[1115,1128] [2023-08-30 09:49:02,407 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 09:49:02,482 INFO L208 MainTranslator]: Completed translation [2023-08-30 09:49:02,483 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 09:49:02 WrapperNode [2023-08-30 09:49:02,483 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 09:49:02,484 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 09:49:02,484 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 09:49:02,484 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 09:49:02,489 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 09:49:02" (1/1) ... [2023-08-30 09:49:02,514 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 09:49:02" (1/1) ... [2023-08-30 09:49:02,538 INFO L138 Inliner]: procedures = 165, calls = 35, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 124 [2023-08-30 09:49:02,538 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 09:49:02,539 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 09:49:02,539 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 09:49:02,540 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 09:49:02,546 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 09:49:02" (1/1) ... [2023-08-30 09:49:02,546 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 09:49:02" (1/1) ... [2023-08-30 09:49:02,559 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 09:49:02" (1/1) ... [2023-08-30 09:49:02,560 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 09:49:02" (1/1) ... [2023-08-30 09:49:02,563 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 09:49:02" (1/1) ... [2023-08-30 09:49:02,571 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 09:49:02" (1/1) ... [2023-08-30 09:49:02,574 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 09:49:02" (1/1) ... [2023-08-30 09:49:02,580 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 09:49:02" (1/1) ... [2023-08-30 09:49:02,582 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 09:49:02,586 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 09:49:02,586 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 09:49:02,587 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 09:49:02,587 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 09:49:02" (1/1) ... [2023-08-30 09:49:02,592 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 09:49:02,601 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 09:49:02,642 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 09:49:02,690 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 09:49:02,711 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 09:49:02,712 INFO L130 BoogieDeclarations]: Found specification of procedure worker [2023-08-30 09:49:02,713 INFO L138 BoogieDeclarations]: Found implementation of procedure worker [2023-08-30 09:49:02,713 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 09:49:02,713 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-30 09:49:02,713 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 09:49:02,713 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 09:49:02,713 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 09:49:02,713 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 09:49:02,714 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 09:49:02,714 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 09:49:02,715 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 09:49:02,831 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 09:49:02,832 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 09:49:03,040 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 09:49:03,049 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 09:49:03,049 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-08-30 09:49:03,051 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 09:49:03 BoogieIcfgContainer [2023-08-30 09:49:03,051 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 09:49:03,053 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 09:49:03,053 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 09:49:03,054 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 09:49:03,055 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 09:49:02" (1/3) ... [2023-08-30 09:49:03,055 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1297b8d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 09:49:03, skipping insertion in model container [2023-08-30 09:49:03,055 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 09:49:02" (2/3) ... [2023-08-30 09:49:03,056 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1297b8d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 09:49:03, skipping insertion in model container [2023-08-30 09:49:03,056 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 09:49:03" (3/3) ... [2023-08-30 09:49:03,057 INFO L112 eAbstractionObserver]: Analyzing ICFG 13-privatized_68-pfscan_protected_loop_minimal_interval_true.i [2023-08-30 09:49:03,062 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 09:49:03,068 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 09:49:03,068 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-08-30 09:49:03,068 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 09:49:03,112 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-30 09:49:03,138 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 132 places, 138 transitions, 281 flow [2023-08-30 09:49:03,195 INFO L130 PetriNetUnfolder]: 10/137 cut-off events. [2023-08-30 09:49:03,195 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 09:49:03,199 INFO L83 FinitePrefix]: Finished finitePrefix Result has 141 conditions, 137 events. 10/137 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 256 event pairs, 0 based on Foata normal form. 0/121 useless extension candidates. Maximal degree in co-relation 101. Up to 2 conditions per place. [2023-08-30 09:49:03,199 INFO L82 GeneralOperation]: Start removeDead. Operand has 132 places, 138 transitions, 281 flow [2023-08-30 09:49:03,206 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 131 places, 137 transitions, 277 flow [2023-08-30 09:49:03,209 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 09:49:03,217 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 131 places, 137 transitions, 277 flow [2023-08-30 09:49:03,218 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 131 places, 137 transitions, 277 flow [2023-08-30 09:49:03,219 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 131 places, 137 transitions, 277 flow [2023-08-30 09:49:03,239 INFO L130 PetriNetUnfolder]: 10/137 cut-off events. [2023-08-30 09:49:03,241 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 09:49:03,242 INFO L83 FinitePrefix]: Finished finitePrefix Result has 141 conditions, 137 events. 10/137 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 256 event pairs, 0 based on Foata normal form. 0/121 useless extension candidates. Maximal degree in co-relation 101. Up to 2 conditions per place. [2023-08-30 09:49:03,244 INFO L119 LiptonReduction]: Number of co-enabled transitions 4988 [2023-08-30 09:49:05,971 INFO L134 LiptonReduction]: Checked pairs total: 7411 [2023-08-30 09:49:05,971 INFO L136 LiptonReduction]: Total number of compositions: 133 [2023-08-30 09:49:05,986 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 09:49:06,008 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;@6e7c117a, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 09:49:06,008 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2023-08-30 09:49:06,021 INFO L130 PetriNetUnfolder]: 4/21 cut-off events. [2023-08-30 09:49:06,022 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 09:49:06,022 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:49:06,022 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-30 09:49:06,023 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-08-30 09:49:06,026 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:49:06,027 INFO L85 PathProgramCache]: Analyzing trace with hash -1151992810, now seen corresponding path program 1 times [2023-08-30 09:49:06,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:49:06,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [624072403] [2023-08-30 09:49:06,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:49:06,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:49:06,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:49:06,306 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 09:49:06,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:49:06,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [624072403] [2023-08-30 09:49:06,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [624072403] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 09:49:06,307 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 09:49:06,308 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 09:49:06,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344364193] [2023-08-30 09:49:06,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 09:49:06,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 09:49:06,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:49:06,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 09:49:06,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 09:49:06,395 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 271 [2023-08-30 09:49:06,397 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 32 transitions, 67 flow. Second operand has 3 states, 3 states have (on average 126.0) internal successors, (378), 3 states have internal predecessors, (378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:49:06,397 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:49:06,397 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 271 [2023-08-30 09:49:06,398 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:49:06,495 INFO L130 PetriNetUnfolder]: 218/399 cut-off events. [2023-08-30 09:49:06,496 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 09:49:06,496 INFO L83 FinitePrefix]: Finished finitePrefix Result has 798 conditions, 399 events. 218/399 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1484 event pairs, 86 based on Foata normal form. 0/268 useless extension candidates. Maximal degree in co-relation 789. Up to 309 conditions per place. [2023-08-30 09:49:06,499 INFO L137 encePairwiseOnDemand]: 264/271 looper letters, 40 selfloop transitions, 4 changer transitions 0/46 dead transitions. [2023-08-30 09:49:06,499 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 46 transitions, 183 flow [2023-08-30 09:49:06,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 09:49:06,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 09:49:06,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 421 transitions. [2023-08-30 09:49:06,510 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5178351783517835 [2023-08-30 09:49:06,511 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 421 transitions. [2023-08-30 09:49:06,511 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 421 transitions. [2023-08-30 09:49:06,512 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:49:06,514 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 421 transitions. [2023-08-30 09:49:06,517 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 140.33333333333334) internal successors, (421), 3 states have internal predecessors, (421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:49:06,520 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 271.0) internal successors, (1084), 4 states have internal predecessors, (1084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:49:06,521 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 271.0) internal successors, (1084), 4 states have internal predecessors, (1084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:49:06,522 INFO L175 Difference]: Start difference. First operand has 30 places, 32 transitions, 67 flow. Second operand 3 states and 421 transitions. [2023-08-30 09:49:06,523 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 46 transitions, 183 flow [2023-08-30 09:49:06,524 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 46 transitions, 182 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 09:49:06,525 INFO L231 Difference]: Finished difference. Result has 32 places, 33 transitions, 92 flow [2023-08-30 09:49:06,527 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=271, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=92, PETRI_PLACES=32, PETRI_TRANSITIONS=33} [2023-08-30 09:49:06,529 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 2 predicate places. [2023-08-30 09:49:06,529 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 33 transitions, 92 flow [2023-08-30 09:49:06,530 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 126.0) internal successors, (378), 3 states have internal predecessors, (378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:49:06,530 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:49:06,530 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-30 09:49:06,530 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 09:49:06,530 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-08-30 09:49:06,531 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:49:06,531 INFO L85 PathProgramCache]: Analyzing trace with hash -1151992811, now seen corresponding path program 1 times [2023-08-30 09:49:06,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:49:06,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081714019] [2023-08-30 09:49:06,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:49:06,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:49:06,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:49:06,662 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 09:49:06,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:49:06,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1081714019] [2023-08-30 09:49:06,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1081714019] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 09:49:06,663 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 09:49:06,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 09:49:06,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582658676] [2023-08-30 09:49:06,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 09:49:06,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 09:49:06,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:49:06,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 09:49:06,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 09:49:06,742 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 122 out of 271 [2023-08-30 09:49:06,743 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 33 transitions, 92 flow. Second operand has 4 states, 4 states have (on average 123.5) internal successors, (494), 4 states have internal predecessors, (494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:49:06,743 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:49:06,743 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 122 of 271 [2023-08-30 09:49:06,743 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:49:06,884 INFO L130 PetriNetUnfolder]: 295/549 cut-off events. [2023-08-30 09:49:06,885 INFO L131 PetriNetUnfolder]: For 112/112 co-relation queries the response was YES. [2023-08-30 09:49:06,886 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1265 conditions, 549 events. 295/549 cut-off events. For 112/112 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 2222 event pairs, 33 based on Foata normal form. 22/451 useless extension candidates. Maximal degree in co-relation 1255. Up to 410 conditions per place. [2023-08-30 09:49:06,888 INFO L137 encePairwiseOnDemand]: 265/271 looper letters, 56 selfloop transitions, 6 changer transitions 0/64 dead transitions. [2023-08-30 09:49:06,889 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 64 transitions, 294 flow [2023-08-30 09:49:06,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 09:49:06,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 09:49:06,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 548 transitions. [2023-08-30 09:49:06,891 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5055350553505535 [2023-08-30 09:49:06,891 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 548 transitions. [2023-08-30 09:49:06,892 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 548 transitions. [2023-08-30 09:49:06,892 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:49:06,892 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 548 transitions. [2023-08-30 09:49:06,893 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 137.0) internal successors, (548), 4 states have internal predecessors, (548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:49:06,895 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 271.0) internal successors, (1355), 5 states have internal predecessors, (1355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:49:06,896 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 271.0) internal successors, (1355), 5 states have internal predecessors, (1355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:49:06,896 INFO L175 Difference]: Start difference. First operand has 32 places, 33 transitions, 92 flow. Second operand 4 states and 548 transitions. [2023-08-30 09:49:06,896 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 64 transitions, 294 flow [2023-08-30 09:49:06,898 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 64 transitions, 280 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 09:49:06,898 INFO L231 Difference]: Finished difference. Result has 35 places, 38 transitions, 133 flow [2023-08-30 09:49:06,898 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=271, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=133, PETRI_PLACES=35, PETRI_TRANSITIONS=38} [2023-08-30 09:49:06,899 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 5 predicate places. [2023-08-30 09:49:06,899 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 38 transitions, 133 flow [2023-08-30 09:49:06,900 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 123.5) internal successors, (494), 4 states have internal predecessors, (494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:49:06,900 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:49:06,900 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 09:49:06,900 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 09:49:06,900 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting workerErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-08-30 09:49:06,901 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:49:06,901 INFO L85 PathProgramCache]: Analyzing trace with hash 1614499698, now seen corresponding path program 1 times [2023-08-30 09:49:06,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:49:06,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346124410] [2023-08-30 09:49:06,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:49:06,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:49:06,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:49:06,949 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 09:49:06,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:49:06,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346124410] [2023-08-30 09:49:06,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [346124410] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 09:49:06,950 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 09:49:06,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 09:49:06,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249894088] [2023-08-30 09:49:06,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 09:49:06,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 09:49:06,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:49:06,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 09:49:06,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 09:49:06,982 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 271 [2023-08-30 09:49:06,982 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 38 transitions, 133 flow. Second operand has 3 states, 3 states have (on average 125.33333333333333) internal successors, (376), 3 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:49:06,983 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:49:06,983 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 271 [2023-08-30 09:49:06,983 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:49:07,078 INFO L130 PetriNetUnfolder]: 312/586 cut-off events. [2023-08-30 09:49:07,078 INFO L131 PetriNetUnfolder]: For 184/184 co-relation queries the response was YES. [2023-08-30 09:49:07,080 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1433 conditions, 586 events. 312/586 cut-off events. For 184/184 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2544 event pairs, 65 based on Foata normal form. 0/487 useless extension candidates. Maximal degree in co-relation 1420. Up to 357 conditions per place. [2023-08-30 09:49:07,084 INFO L137 encePairwiseOnDemand]: 264/271 looper letters, 48 selfloop transitions, 11 changer transitions 0/61 dead transitions. [2023-08-30 09:49:07,085 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 61 transitions, 334 flow [2023-08-30 09:49:07,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 09:49:07,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 09:49:07,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 417 transitions. [2023-08-30 09:49:07,087 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5129151291512916 [2023-08-30 09:49:07,087 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 417 transitions. [2023-08-30 09:49:07,087 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 417 transitions. [2023-08-30 09:49:07,088 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:49:07,088 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 417 transitions. [2023-08-30 09:49:07,089 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 139.0) internal successors, (417), 3 states have internal predecessors, (417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:49:07,090 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 271.0) internal successors, (1084), 4 states have internal predecessors, (1084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:49:07,090 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 271.0) internal successors, (1084), 4 states have internal predecessors, (1084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:49:07,091 INFO L175 Difference]: Start difference. First operand has 35 places, 38 transitions, 133 flow. Second operand 3 states and 417 transitions. [2023-08-30 09:49:07,091 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 61 transitions, 334 flow [2023-08-30 09:49:07,093 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 61 transitions, 332 flow, removed 1 selfloop flow, removed 0 redundant places. [2023-08-30 09:49:07,094 INFO L231 Difference]: Finished difference. Result has 39 places, 45 transitions, 226 flow [2023-08-30 09:49:07,094 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=271, PETRI_DIFFERENCE_MINUEND_FLOW=131, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=226, PETRI_PLACES=39, PETRI_TRANSITIONS=45} [2023-08-30 09:49:07,095 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 9 predicate places. [2023-08-30 09:49:07,096 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 45 transitions, 226 flow [2023-08-30 09:49:07,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 125.33333333333333) internal successors, (376), 3 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:49:07,096 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:49:07,096 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 09:49:07,096 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-30 09:49:07,097 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting workerErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-08-30 09:49:07,097 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:49:07,097 INFO L85 PathProgramCache]: Analyzing trace with hash 1614499699, now seen corresponding path program 1 times [2023-08-30 09:49:07,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:49:07,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921621067] [2023-08-30 09:49:07,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:49:07,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:49:07,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:49:07,321 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 09:49:07,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:49:07,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921621067] [2023-08-30 09:49:07,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1921621067] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 09:49:07,322 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 09:49:07,322 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 09:49:07,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036224753] [2023-08-30 09:49:07,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 09:49:07,323 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 09:49:07,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:49:07,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 09:49:07,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 09:49:07,384 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 122 out of 271 [2023-08-30 09:49:07,384 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 45 transitions, 226 flow. Second operand has 4 states, 4 states have (on average 123.75) internal successors, (495), 4 states have internal predecessors, (495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:49:07,385 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:49:07,385 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 122 of 271 [2023-08-30 09:49:07,385 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:49:07,478 INFO L130 PetriNetUnfolder]: 296/558 cut-off events. [2023-08-30 09:49:07,479 INFO L131 PetriNetUnfolder]: For 472/472 co-relation queries the response was YES. [2023-08-30 09:49:07,482 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1547 conditions, 558 events. 296/558 cut-off events. For 472/472 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 2115 event pairs, 115 based on Foata normal form. 20/547 useless extension candidates. Maximal degree in co-relation 1532. Up to 447 conditions per place. [2023-08-30 09:49:07,483 INFO L137 encePairwiseOnDemand]: 266/271 looper letters, 57 selfloop transitions, 7 changer transitions 3/69 dead transitions. [2023-08-30 09:49:07,484 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 69 transitions, 413 flow [2023-08-30 09:49:07,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 09:49:07,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 09:49:07,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 668 transitions. [2023-08-30 09:49:07,486 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4929889298892989 [2023-08-30 09:49:07,487 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 668 transitions. [2023-08-30 09:49:07,487 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 668 transitions. [2023-08-30 09:49:07,487 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:49:07,502 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 668 transitions. [2023-08-30 09:49:07,504 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 133.6) internal successors, (668), 5 states have internal predecessors, (668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:49:07,505 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 271.0) internal successors, (1626), 6 states have internal predecessors, (1626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:49:07,506 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 271.0) internal successors, (1626), 6 states have internal predecessors, (1626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:49:07,506 INFO L175 Difference]: Start difference. First operand has 39 places, 45 transitions, 226 flow. Second operand 5 states and 668 transitions. [2023-08-30 09:49:07,506 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 69 transitions, 413 flow [2023-08-30 09:49:07,508 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 69 transitions, 388 flow, removed 4 selfloop flow, removed 3 redundant places. [2023-08-30 09:49:07,508 INFO L231 Difference]: Finished difference. Result has 44 places, 46 transitions, 226 flow [2023-08-30 09:49:07,508 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=271, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=226, PETRI_PLACES=44, PETRI_TRANSITIONS=46} [2023-08-30 09:49:07,509 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 14 predicate places. [2023-08-30 09:49:07,509 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 46 transitions, 226 flow [2023-08-30 09:49:07,510 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 123.75) internal successors, (495), 4 states have internal predecessors, (495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:49:07,510 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:49:07,510 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 09:49:07,510 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-30 09:49:07,510 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-08-30 09:49:07,511 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:49:07,511 INFO L85 PathProgramCache]: Analyzing trace with hash 2065148656, now seen corresponding path program 1 times [2023-08-30 09:49:07,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:49:07,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953377357] [2023-08-30 09:49:07,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:49:07,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:49:07,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:49:07,538 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 09:49:07,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:49:07,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1953377357] [2023-08-30 09:49:07,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1953377357] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 09:49:07,539 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 09:49:07,539 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 09:49:07,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109370826] [2023-08-30 09:49:07,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 09:49:07,539 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 09:49:07,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:49:07,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 09:49:07,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 09:49:07,549 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 122 out of 271 [2023-08-30 09:49:07,550 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 46 transitions, 226 flow. Second operand has 4 states, 4 states have (on average 124.25) internal successors, (497), 4 states have internal predecessors, (497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:49:07,550 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:49:07,550 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 122 of 271 [2023-08-30 09:49:07,550 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:49:07,647 INFO L130 PetriNetUnfolder]: 343/640 cut-off events. [2023-08-30 09:49:07,647 INFO L131 PetriNetUnfolder]: For 497/497 co-relation queries the response was YES. [2023-08-30 09:49:07,648 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1825 conditions, 640 events. 343/640 cut-off events. For 497/497 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 2729 event pairs, 78 based on Foata normal form. 0/569 useless extension candidates. Maximal degree in co-relation 1806. Up to 569 conditions per place. [2023-08-30 09:49:07,650 INFO L137 encePairwiseOnDemand]: 266/271 looper letters, 69 selfloop transitions, 3 changer transitions 1/74 dead transitions. [2023-08-30 09:49:07,651 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 74 transitions, 478 flow [2023-08-30 09:49:07,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 09:49:07,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 09:49:07,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 546 transitions. [2023-08-30 09:49:07,652 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.503690036900369 [2023-08-30 09:49:07,652 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 546 transitions. [2023-08-30 09:49:07,653 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 546 transitions. [2023-08-30 09:49:07,653 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:49:07,653 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 546 transitions. [2023-08-30 09:49:07,654 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 136.5) internal successors, (546), 4 states have internal predecessors, (546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:49:07,655 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 271.0) internal successors, (1355), 5 states have internal predecessors, (1355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:49:07,656 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 271.0) internal successors, (1355), 5 states have internal predecessors, (1355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:49:07,656 INFO L175 Difference]: Start difference. First operand has 44 places, 46 transitions, 226 flow. Second operand 4 states and 546 transitions. [2023-08-30 09:49:07,656 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 74 transitions, 478 flow [2023-08-30 09:49:07,658 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 74 transitions, 474 flow, removed 2 selfloop flow, removed 0 redundant places. [2023-08-30 09:49:07,659 INFO L231 Difference]: Finished difference. Result has 49 places, 48 transitions, 244 flow [2023-08-30 09:49:07,659 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=271, PETRI_DIFFERENCE_MINUEND_FLOW=222, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=244, PETRI_PLACES=49, PETRI_TRANSITIONS=48} [2023-08-30 09:49:07,660 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 19 predicate places. [2023-08-30 09:49:07,660 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 48 transitions, 244 flow [2023-08-30 09:49:07,661 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 124.25) internal successors, (497), 4 states have internal predecessors, (497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:49:07,661 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:49:07,661 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 09:49:07,661 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-30 09:49:07,661 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-08-30 09:49:07,661 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:49:07,662 INFO L85 PathProgramCache]: Analyzing trace with hash 1739948279, now seen corresponding path program 1 times [2023-08-30 09:49:07,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:49:07,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674143830] [2023-08-30 09:49:07,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:49:07,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:49:07,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:49:07,772 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 09:49:07,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:49:07,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1674143830] [2023-08-30 09:49:07,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1674143830] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 09:49:07,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1295363748] [2023-08-30 09:49:07,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:49:07,773 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 09:49:07,773 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 09:49:07,801 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 09:49:07,825 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 09:49:07,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:49:07,870 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 27 conjunts are in the unsatisfiable core [2023-08-30 09:49:07,879 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 09:49:07,977 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 09:49:08,064 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 09:49:08,065 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 09:49:08,111 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 32 treesize of output 28 [2023-08-30 09:49:08,123 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 09:49:08,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1295363748] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 09:49:08,124 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 09:49:08,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 11 [2023-08-30 09:49:08,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331917548] [2023-08-30 09:49:08,124 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 09:49:08,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-30 09:49:08,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:49:08,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-30 09:49:08,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2023-08-30 09:49:08,333 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 122 out of 271 [2023-08-30 09:49:08,334 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 48 transitions, 244 flow. Second operand has 12 states, 12 states have (on average 124.5) internal successors, (1494), 12 states have internal predecessors, (1494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:49:08,334 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:49:08,334 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 122 of 271 [2023-08-30 09:49:08,334 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:49:08,440 INFO L130 PetriNetUnfolder]: 289/550 cut-off events. [2023-08-30 09:49:08,440 INFO L131 PetriNetUnfolder]: For 507/511 co-relation queries the response was YES. [2023-08-30 09:49:08,441 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1654 conditions, 550 events. 289/550 cut-off events. For 507/511 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 2166 event pairs, 139 based on Foata normal form. 19/531 useless extension candidates. Maximal degree in co-relation 1632. Up to 519 conditions per place. [2023-08-30 09:49:08,443 INFO L137 encePairwiseOnDemand]: 268/271 looper letters, 45 selfloop transitions, 2 changer transitions 1/50 dead transitions. [2023-08-30 09:49:08,443 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 50 transitions, 344 flow [2023-08-30 09:49:08,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 09:49:08,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 09:49:08,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 521 transitions. [2023-08-30 09:49:08,445 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4806273062730627 [2023-08-30 09:49:08,445 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 521 transitions. [2023-08-30 09:49:08,445 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 521 transitions. [2023-08-30 09:49:08,445 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:49:08,445 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 521 transitions. [2023-08-30 09:49:08,461 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 130.25) internal successors, (521), 4 states have internal predecessors, (521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:49:08,462 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 271.0) internal successors, (1355), 5 states have internal predecessors, (1355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:49:08,463 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 271.0) internal successors, (1355), 5 states have internal predecessors, (1355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:49:08,463 INFO L175 Difference]: Start difference. First operand has 49 places, 48 transitions, 244 flow. Second operand 4 states and 521 transitions. [2023-08-30 09:49:08,463 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 50 transitions, 344 flow [2023-08-30 09:49:08,464 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 50 transitions, 342 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 09:49:08,465 INFO L231 Difference]: Finished difference. Result has 50 places, 46 transitions, 236 flow [2023-08-30 09:49:08,465 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=271, PETRI_DIFFERENCE_MINUEND_FLOW=232, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=236, PETRI_PLACES=50, PETRI_TRANSITIONS=46} [2023-08-30 09:49:08,466 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 20 predicate places. [2023-08-30 09:49:08,466 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 46 transitions, 236 flow [2023-08-30 09:49:08,466 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 124.5) internal successors, (1494), 12 states have internal predecessors, (1494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:49:08,466 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:49:08,467 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 09:49:08,474 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 09:49:08,671 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-08-30 09:49:08,671 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting workerErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-08-30 09:49:08,671 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:49:08,671 INFO L85 PathProgramCache]: Analyzing trace with hash -1050746213, now seen corresponding path program 1 times [2023-08-30 09:49:08,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:49:08,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1733585743] [2023-08-30 09:49:08,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:49:08,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:49:08,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:49:08,764 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 09:49:08,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:49:08,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1733585743] [2023-08-30 09:49:08,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1733585743] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 09:49:08,765 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 09:49:08,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 09:49:08,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673506055] [2023-08-30 09:49:08,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 09:49:08,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 09:49:08,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:49:08,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 09:49:08,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-30 09:49:08,858 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 271 [2023-08-30 09:49:08,858 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 46 transitions, 236 flow. Second operand has 5 states, 5 states have (on average 122.4) internal successors, (612), 5 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:49:08,859 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:49:08,859 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 271 [2023-08-30 09:49:08,859 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:49:09,094 INFO L130 PetriNetUnfolder]: 690/1305 cut-off events. [2023-08-30 09:49:09,094 INFO L131 PetriNetUnfolder]: For 1077/1094 co-relation queries the response was YES. [2023-08-30 09:49:09,096 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3832 conditions, 1305 events. 690/1305 cut-off events. For 1077/1094 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 6441 event pairs, 150 based on Foata normal form. 28/1240 useless extension candidates. Maximal degree in co-relation 3809. Up to 512 conditions per place. [2023-08-30 09:49:09,100 INFO L137 encePairwiseOnDemand]: 263/271 looper letters, 122 selfloop transitions, 18 changer transitions 0/142 dead transitions. [2023-08-30 09:49:09,100 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 142 transitions, 958 flow [2023-08-30 09:49:09,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 09:49:09,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 09:49:09,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 819 transitions. [2023-08-30 09:49:09,102 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.503690036900369 [2023-08-30 09:49:09,102 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 819 transitions. [2023-08-30 09:49:09,103 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 819 transitions. [2023-08-30 09:49:09,103 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:49:09,103 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 819 transitions. [2023-08-30 09:49:09,104 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 136.5) internal successors, (819), 6 states have internal predecessors, (819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:49:09,106 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 271.0) internal successors, (1897), 7 states have internal predecessors, (1897), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:49:09,106 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 271.0) internal successors, (1897), 7 states have internal predecessors, (1897), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:49:09,107 INFO L175 Difference]: Start difference. First operand has 50 places, 46 transitions, 236 flow. Second operand 6 states and 819 transitions. [2023-08-30 09:49:09,107 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 142 transitions, 958 flow [2023-08-30 09:49:09,109 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 142 transitions, 953 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 09:49:09,110 INFO L231 Difference]: Finished difference. Result has 58 places, 63 transitions, 427 flow [2023-08-30 09:49:09,110 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=271, PETRI_DIFFERENCE_MINUEND_FLOW=233, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=427, PETRI_PLACES=58, PETRI_TRANSITIONS=63} [2023-08-30 09:49:09,111 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 28 predicate places. [2023-08-30 09:49:09,111 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 63 transitions, 427 flow [2023-08-30 09:49:09,111 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 122.4) internal successors, (612), 5 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:49:09,111 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:49:09,112 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 09:49:09,112 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-30 09:49:09,112 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting workerErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-08-30 09:49:09,112 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:49:09,112 INFO L85 PathProgramCache]: Analyzing trace with hash -1732615525, now seen corresponding path program 2 times [2023-08-30 09:49:09,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:49:09,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013216028] [2023-08-30 09:49:09,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:49:09,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:49:09,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:49:09,193 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 09:49:09,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:49:09,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2013216028] [2023-08-30 09:49:09,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2013216028] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 09:49:09,193 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 09:49:09,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 09:49:09,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253656375] [2023-08-30 09:49:09,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 09:49:09,194 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 09:49:09,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:49:09,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 09:49:09,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-30 09:49:09,266 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 271 [2023-08-30 09:49:09,267 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 63 transitions, 427 flow. Second operand has 5 states, 5 states have (on average 123.4) internal successors, (617), 5 states have internal predecessors, (617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:49:09,267 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:49:09,267 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 271 [2023-08-30 09:49:09,268 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:49:09,531 INFO L130 PetriNetUnfolder]: 1202/2259 cut-off events. [2023-08-30 09:49:09,531 INFO L131 PetriNetUnfolder]: For 4127/4153 co-relation queries the response was YES. [2023-08-30 09:49:09,537 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7797 conditions, 2259 events. 1202/2259 cut-off events. For 4127/4153 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 13033 event pairs, 409 based on Foata normal form. 26/2188 useless extension candidates. Maximal degree in co-relation 7771. Up to 1222 conditions per place. [2023-08-30 09:49:09,546 INFO L137 encePairwiseOnDemand]: 262/271 looper letters, 128 selfloop transitions, 30 changer transitions 2/162 dead transitions. [2023-08-30 09:49:09,546 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 162 transitions, 1331 flow [2023-08-30 09:49:09,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 09:49:09,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 09:49:09,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 943 transitions. [2023-08-30 09:49:09,548 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49710068529256723 [2023-08-30 09:49:09,548 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 943 transitions. [2023-08-30 09:49:09,548 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 943 transitions. [2023-08-30 09:49:09,549 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:49:09,549 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 943 transitions. [2023-08-30 09:49:09,550 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 134.71428571428572) internal successors, (943), 7 states have internal predecessors, (943), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:49:09,552 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 271.0) internal successors, (2168), 8 states have internal predecessors, (2168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:49:09,553 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 271.0) internal successors, (2168), 8 states have internal predecessors, (2168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:49:09,553 INFO L175 Difference]: Start difference. First operand has 58 places, 63 transitions, 427 flow. Second operand 7 states and 943 transitions. [2023-08-30 09:49:09,553 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 162 transitions, 1331 flow [2023-08-30 09:49:09,573 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 162 transitions, 1321 flow, removed 5 selfloop flow, removed 0 redundant places. [2023-08-30 09:49:09,575 INFO L231 Difference]: Finished difference. Result has 68 places, 88 transitions, 788 flow [2023-08-30 09:49:09,575 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=271, PETRI_DIFFERENCE_MINUEND_FLOW=413, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=788, PETRI_PLACES=68, PETRI_TRANSITIONS=88} [2023-08-30 09:49:09,575 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 38 predicate places. [2023-08-30 09:49:09,576 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 88 transitions, 788 flow [2023-08-30 09:49:09,576 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 123.4) internal successors, (617), 5 states have internal predecessors, (617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:49:09,576 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:49:09,576 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 09:49:09,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-30 09:49:09,576 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting workerErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-08-30 09:49:09,577 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:49:09,577 INFO L85 PathProgramCache]: Analyzing trace with hash 1850682349, now seen corresponding path program 3 times [2023-08-30 09:49:09,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:49:09,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1374088652] [2023-08-30 09:49:09,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:49:09,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:49:09,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:49:09,657 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 09:49:09,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:49:09,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1374088652] [2023-08-30 09:49:09,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1374088652] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 09:49:09,658 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 09:49:09,658 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 09:49:09,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297240758] [2023-08-30 09:49:09,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 09:49:09,658 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 09:49:09,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:49:09,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 09:49:09,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-30 09:49:09,741 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 271 [2023-08-30 09:49:09,742 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 88 transitions, 788 flow. Second operand has 5 states, 5 states have (on average 122.4) internal successors, (612), 5 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:49:09,742 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:49:09,742 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 271 [2023-08-30 09:49:09,742 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:49:09,994 INFO L130 PetriNetUnfolder]: 1181/2194 cut-off events. [2023-08-30 09:49:09,994 INFO L131 PetriNetUnfolder]: For 6729/6754 co-relation queries the response was YES. [2023-08-30 09:49:09,999 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8390 conditions, 2194 events. 1181/2194 cut-off events. For 6729/6754 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 12378 event pairs, 502 based on Foata normal form. 17/2119 useless extension candidates. Maximal degree in co-relation 8359. Up to 2089 conditions per place. [2023-08-30 09:49:10,010 INFO L137 encePairwiseOnDemand]: 267/271 looper letters, 92 selfloop transitions, 7 changer transitions 3/104 dead transitions. [2023-08-30 09:49:10,010 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 104 transitions, 1064 flow [2023-08-30 09:49:10,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 09:49:10,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 09:49:10,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 766 transitions. [2023-08-30 09:49:10,012 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4710947109471095 [2023-08-30 09:49:10,012 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 766 transitions. [2023-08-30 09:49:10,012 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 766 transitions. [2023-08-30 09:49:10,013 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:49:10,013 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 766 transitions. [2023-08-30 09:49:10,014 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 127.66666666666667) internal successors, (766), 6 states have internal predecessors, (766), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:49:10,016 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 271.0) internal successors, (1897), 7 states have internal predecessors, (1897), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:49:10,016 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 271.0) internal successors, (1897), 7 states have internal predecessors, (1897), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:49:10,016 INFO L175 Difference]: Start difference. First operand has 68 places, 88 transitions, 788 flow. Second operand 6 states and 766 transitions. [2023-08-30 09:49:10,016 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 104 transitions, 1064 flow [2023-08-30 09:49:10,025 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 104 transitions, 1035 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-30 09:49:10,027 INFO L231 Difference]: Finished difference. Result has 70 places, 87 transitions, 763 flow [2023-08-30 09:49:10,027 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=271, PETRI_DIFFERENCE_MINUEND_FLOW=749, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=763, PETRI_PLACES=70, PETRI_TRANSITIONS=87} [2023-08-30 09:49:10,027 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 40 predicate places. [2023-08-30 09:49:10,027 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 87 transitions, 763 flow [2023-08-30 09:49:10,028 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 122.4) internal successors, (612), 5 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:49:10,028 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:49:10,028 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 09:49:10,028 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-30 09:49:10,028 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-08-30 09:49:10,029 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:49:10,029 INFO L85 PathProgramCache]: Analyzing trace with hash -1896177130, now seen corresponding path program 1 times [2023-08-30 09:49:10,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:49:10,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477966718] [2023-08-30 09:49:10,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:49:10,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:49:10,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:49:10,073 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 09:49:10,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:49:10,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [477966718] [2023-08-30 09:49:10,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [477966718] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 09:49:10,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1890542650] [2023-08-30 09:49:10,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:49:10,074 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 09:49:10,074 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 09:49:10,093 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 09:49:10,094 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 09:49:10,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:49:10,156 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-30 09:49:10,157 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 09:49:10,186 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 09:49:10,186 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 09:49:10,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1890542650] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 09:49:10,186 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 09:49:10,186 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2023-08-30 09:49:10,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634051343] [2023-08-30 09:49:10,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 09:49:10,187 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 09:49:10,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:49:10,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 09:49:10,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-08-30 09:49:10,205 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 122 out of 271 [2023-08-30 09:49:10,206 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 87 transitions, 763 flow. Second operand has 6 states, 6 states have (on average 124.16666666666667) internal successors, (745), 6 states have internal predecessors, (745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:49:10,206 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:49:10,206 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 122 of 271 [2023-08-30 09:49:10,206 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:49:10,442 INFO L130 PetriNetUnfolder]: 1181/2128 cut-off events. [2023-08-30 09:49:10,442 INFO L131 PetriNetUnfolder]: For 6365/6365 co-relation queries the response was YES. [2023-08-30 09:49:10,445 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8265 conditions, 2128 events. 1181/2128 cut-off events. For 6365/6365 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 11711 event pairs, 165 based on Foata normal form. 0/2037 useless extension candidates. Maximal degree in co-relation 8234. Up to 1426 conditions per place. [2023-08-30 09:49:10,451 INFO L137 encePairwiseOnDemand]: 266/271 looper letters, 165 selfloop transitions, 6 changer transitions 1/173 dead transitions. [2023-08-30 09:49:10,451 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 173 transitions, 1824 flow [2023-08-30 09:49:10,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 09:49:10,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 09:49:10,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 799 transitions. [2023-08-30 09:49:10,453 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.491389913899139 [2023-08-30 09:49:10,453 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 799 transitions. [2023-08-30 09:49:10,454 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 799 transitions. [2023-08-30 09:49:10,454 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:49:10,454 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 799 transitions. [2023-08-30 09:49:10,455 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 133.16666666666666) internal successors, (799), 6 states have internal predecessors, (799), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:49:10,457 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 271.0) internal successors, (1897), 7 states have internal predecessors, (1897), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:49:10,458 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 271.0) internal successors, (1897), 7 states have internal predecessors, (1897), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:49:10,458 INFO L175 Difference]: Start difference. First operand has 70 places, 87 transitions, 763 flow. Second operand 6 states and 799 transitions. [2023-08-30 09:49:10,458 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 173 transitions, 1824 flow [2023-08-30 09:49:10,463 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 173 transitions, 1806 flow, removed 3 selfloop flow, removed 3 redundant places. [2023-08-30 09:49:10,464 INFO L231 Difference]: Finished difference. Result has 71 places, 86 transitions, 759 flow [2023-08-30 09:49:10,465 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=271, PETRI_DIFFERENCE_MINUEND_FLOW=747, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=759, PETRI_PLACES=71, PETRI_TRANSITIONS=86} [2023-08-30 09:49:10,466 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 41 predicate places. [2023-08-30 09:49:10,466 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 86 transitions, 759 flow [2023-08-30 09:49:10,467 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 124.16666666666667) internal successors, (745), 6 states have internal predecessors, (745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:49:10,467 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:49:10,467 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 09:49:10,483 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-30 09:49:10,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-08-30 09:49:10,672 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-08-30 09:49:10,673 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:49:10,673 INFO L85 PathProgramCache]: Analyzing trace with hash -1896176952, now seen corresponding path program 1 times [2023-08-30 09:49:10,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:49:10,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249714022] [2023-08-30 09:49:10,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:49:10,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:49:10,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:49:10,727 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 09:49:10,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:49:10,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [249714022] [2023-08-30 09:49:10,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [249714022] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 09:49:10,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [552118826] [2023-08-30 09:49:10,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:49:10,729 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 09:49:10,729 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 09:49:10,730 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 09:49:10,732 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-30 09:49:10,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:49:10,800 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-30 09:49:10,801 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 09:49:10,829 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 09:49:10,829 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 09:49:10,858 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 09:49:10,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [552118826] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 09:49:10,858 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 09:49:10,858 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2023-08-30 09:49:10,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324309430] [2023-08-30 09:49:10,859 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 09:49:10,859 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-30 09:49:10,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:49:10,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-30 09:49:10,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2023-08-30 09:49:10,887 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 271 [2023-08-30 09:49:10,888 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 86 transitions, 759 flow. Second operand has 12 states, 12 states have (on average 123.58333333333333) internal successors, (1483), 12 states have internal predecessors, (1483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:49:10,889 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:49:10,889 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 271 [2023-08-30 09:49:10,889 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:49:11,730 INFO L130 PetriNetUnfolder]: 3709/6643 cut-off events. [2023-08-30 09:49:11,730 INFO L131 PetriNetUnfolder]: For 20038/20038 co-relation queries the response was YES. [2023-08-30 09:49:11,743 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26708 conditions, 6643 events. 3709/6643 cut-off events. For 20038/20038 co-relation queries the response was YES. Maximal size of possible extension queue 193. Compared 42537 event pairs, 512 based on Foata normal form. 269/6912 useless extension candidates. Maximal degree in co-relation 26679. Up to 1935 conditions per place. [2023-08-30 09:49:11,771 INFO L137 encePairwiseOnDemand]: 266/271 looper letters, 431 selfloop transitions, 12 changer transitions 2/446 dead transitions. [2023-08-30 09:49:11,771 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 446 transitions, 4739 flow [2023-08-30 09:49:11,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-30 09:49:11,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-30 09:49:11,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1366 transitions. [2023-08-30 09:49:11,774 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5040590405904058 [2023-08-30 09:49:11,775 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1366 transitions. [2023-08-30 09:49:11,775 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1366 transitions. [2023-08-30 09:49:11,775 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:49:11,775 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1366 transitions. [2023-08-30 09:49:11,778 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 136.6) internal successors, (1366), 10 states have internal predecessors, (1366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:49:11,780 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 271.0) internal successors, (2981), 11 states have internal predecessors, (2981), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:49:11,781 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 271.0) internal successors, (2981), 11 states have internal predecessors, (2981), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:49:11,781 INFO L175 Difference]: Start difference. First operand has 71 places, 86 transitions, 759 flow. Second operand 10 states and 1366 transitions. [2023-08-30 09:49:11,781 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 446 transitions, 4739 flow [2023-08-30 09:49:11,806 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 446 transitions, 4724 flow, removed 4 selfloop flow, removed 4 redundant places. [2023-08-30 09:49:11,809 INFO L231 Difference]: Finished difference. Result has 79 places, 95 transitions, 837 flow [2023-08-30 09:49:11,809 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=271, PETRI_DIFFERENCE_MINUEND_FLOW=750, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=837, PETRI_PLACES=79, PETRI_TRANSITIONS=95} [2023-08-30 09:49:11,810 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 49 predicate places. [2023-08-30 09:49:11,810 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 95 transitions, 837 flow [2023-08-30 09:49:11,810 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 123.58333333333333) internal successors, (1483), 12 states have internal predecessors, (1483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:49:11,810 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:49:11,810 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 09:49:11,829 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-30 09:49:12,015 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 09:49:12,016 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting workerErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-08-30 09:49:12,016 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:49:12,016 INFO L85 PathProgramCache]: Analyzing trace with hash -1150288132, now seen corresponding path program 1 times [2023-08-30 09:49:12,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:49:12,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188391828] [2023-08-30 09:49:12,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:49:12,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:49:12,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:49:12,216 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 09:49:12,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:49:12,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188391828] [2023-08-30 09:49:12,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [188391828] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 09:49:12,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [409857497] [2023-08-30 09:49:12,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:49:12,217 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 09:49:12,218 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 09:49:12,218 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 09:49:12,221 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-30 09:49:12,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:49:12,292 INFO L263 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 40 conjunts are in the unsatisfiable core [2023-08-30 09:49:12,293 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 09:49:12,381 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 09:49:12,499 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 09:49:12,512 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 09:49:12,512 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 09:49:12,643 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 09:49:12,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [409857497] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-30 09:49:12,643 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-30 09:49:12,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 7] total 17 [2023-08-30 09:49:12,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264713586] [2023-08-30 09:49:12,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 09:49:12,644 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 09:49:12,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:49:12,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 09:49:12,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=233, Unknown=0, NotChecked=0, Total=306 [2023-08-30 09:49:12,949 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 271 [2023-08-30 09:49:12,949 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 95 transitions, 837 flow. Second operand has 6 states, 6 states have (on average 119.0) internal successors, (714), 6 states have internal predecessors, (714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:49:12,949 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:49:12,949 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 271 [2023-08-30 09:49:12,950 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:49:13,967 INFO L130 PetriNetUnfolder]: 5432/9774 cut-off events. [2023-08-30 09:49:13,968 INFO L131 PetriNetUnfolder]: For 35594/35594 co-relation queries the response was YES. [2023-08-30 09:49:14,001 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41501 conditions, 9774 events. 5432/9774 cut-off events. For 35594/35594 co-relation queries the response was YES. Maximal size of possible extension queue 289. Compared 68619 event pairs, 837 based on Foata normal form. 125/9898 useless extension candidates. Maximal degree in co-relation 41470. Up to 4900 conditions per place. [2023-08-30 09:49:14,043 INFO L137 encePairwiseOnDemand]: 261/271 looper letters, 139 selfloop transitions, 63 changer transitions 1/204 dead transitions. [2023-08-30 09:49:14,043 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 204 transitions, 2112 flow [2023-08-30 09:49:14,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 09:49:14,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 09:49:14,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 657 transitions. [2023-08-30 09:49:14,048 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48487084870848707 [2023-08-30 09:49:14,048 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 657 transitions. [2023-08-30 09:49:14,048 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 657 transitions. [2023-08-30 09:49:14,049 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:49:14,049 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 657 transitions. [2023-08-30 09:49:14,050 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 131.4) internal successors, (657), 5 states have internal predecessors, (657), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:49:14,051 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 271.0) internal successors, (1626), 6 states have internal predecessors, (1626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:49:14,052 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 271.0) internal successors, (1626), 6 states have internal predecessors, (1626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:49:14,052 INFO L175 Difference]: Start difference. First operand has 79 places, 95 transitions, 837 flow. Second operand 5 states and 657 transitions. [2023-08-30 09:49:14,052 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 204 transitions, 2112 flow [2023-08-30 09:49:14,142 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 204 transitions, 2083 flow, removed 9 selfloop flow, removed 2 redundant places. [2023-08-30 09:49:14,144 INFO L231 Difference]: Finished difference. Result has 85 places, 139 transitions, 1540 flow [2023-08-30 09:49:14,145 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=271, PETRI_DIFFERENCE_MINUEND_FLOW=827, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1540, PETRI_PLACES=85, PETRI_TRANSITIONS=139} [2023-08-30 09:49:14,146 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 55 predicate places. [2023-08-30 09:49:14,147 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 139 transitions, 1540 flow [2023-08-30 09:49:14,147 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 119.0) internal successors, (714), 6 states have internal predecessors, (714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:49:14,147 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:49:14,147 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 09:49:14,169 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-30 09:49:14,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 09:49:14,353 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting workerErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-08-30 09:49:14,353 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:49:14,354 INFO L85 PathProgramCache]: Analyzing trace with hash -908990522, now seen corresponding path program 2 times [2023-08-30 09:49:14,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:49:14,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014913850] [2023-08-30 09:49:14,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:49:14,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:49:14,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:49:14,484 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 09:49:14,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:49:14,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2014913850] [2023-08-30 09:49:14,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2014913850] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 09:49:14,484 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 09:49:14,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-30 09:49:14,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327120199] [2023-08-30 09:49:14,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 09:49:14,485 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 09:49:14,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:49:14,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 09:49:14,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-08-30 09:49:14,674 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 271 [2023-08-30 09:49:14,675 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 139 transitions, 1540 flow. Second operand has 7 states, 7 states have (on average 118.57142857142857) internal successors, (830), 7 states have internal predecessors, (830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:49:14,675 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:49:14,675 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 271 [2023-08-30 09:49:14,675 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:49:15,988 INFO L130 PetriNetUnfolder]: 6748/12584 cut-off events. [2023-08-30 09:49:15,988 INFO L131 PetriNetUnfolder]: For 72870/72870 co-relation queries the response was YES. [2023-08-30 09:49:16,022 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61651 conditions, 12584 events. 6748/12584 cut-off events. For 72870/72870 co-relation queries the response was YES. Maximal size of possible extension queue 396. Compared 94990 event pairs, 2197 based on Foata normal form. 327/12910 useless extension candidates. Maximal degree in co-relation 61616. Up to 9045 conditions per place. [2023-08-30 09:49:16,070 INFO L137 encePairwiseOnDemand]: 260/271 looper letters, 184 selfloop transitions, 98 changer transitions 2/285 dead transitions. [2023-08-30 09:49:16,071 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 285 transitions, 3586 flow [2023-08-30 09:49:16,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-30 09:49:16,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-30 09:49:16,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1139 transitions. [2023-08-30 09:49:16,074 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46699466994669947 [2023-08-30 09:49:16,074 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1139 transitions. [2023-08-30 09:49:16,074 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1139 transitions. [2023-08-30 09:49:16,075 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:49:16,075 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1139 transitions. [2023-08-30 09:49:16,077 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 126.55555555555556) internal successors, (1139), 9 states have internal predecessors, (1139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:49:16,080 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 271.0) internal successors, (2710), 10 states have internal predecessors, (2710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:49:16,081 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 271.0) internal successors, (2710), 10 states have internal predecessors, (2710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:49:16,081 INFO L175 Difference]: Start difference. First operand has 85 places, 139 transitions, 1540 flow. Second operand 9 states and 1139 transitions. [2023-08-30 09:49:16,081 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 285 transitions, 3586 flow [2023-08-30 09:49:16,215 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 285 transitions, 3550 flow, removed 18 selfloop flow, removed 0 redundant places. [2023-08-30 09:49:16,218 INFO L231 Difference]: Finished difference. Result has 97 places, 204 transitions, 2788 flow [2023-08-30 09:49:16,218 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=271, PETRI_DIFFERENCE_MINUEND_FLOW=1518, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2788, PETRI_PLACES=97, PETRI_TRANSITIONS=204} [2023-08-30 09:49:16,218 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 67 predicate places. [2023-08-30 09:49:16,218 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 204 transitions, 2788 flow [2023-08-30 09:49:16,219 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 118.57142857142857) internal successors, (830), 7 states have internal predecessors, (830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:49:16,219 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:49:16,219 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 09:49:16,219 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-30 09:49:16,219 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting workerErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-08-30 09:49:16,220 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:49:16,220 INFO L85 PathProgramCache]: Analyzing trace with hash -1773811512, now seen corresponding path program 3 times [2023-08-30 09:49:16,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:49:16,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582783433] [2023-08-30 09:49:16,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:49:16,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:49:16,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:49:16,389 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 09:49:16,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:49:16,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582783433] [2023-08-30 09:49:16,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [582783433] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 09:49:16,389 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 09:49:16,390 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-30 09:49:16,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343354992] [2023-08-30 09:49:16,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 09:49:16,390 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 09:49:16,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:49:16,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 09:49:16,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-08-30 09:49:16,582 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 271 [2023-08-30 09:49:16,583 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 204 transitions, 2788 flow. Second operand has 7 states, 7 states have (on average 118.57142857142857) internal successors, (830), 7 states have internal predecessors, (830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:49:16,583 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:49:16,583 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 271 [2023-08-30 09:49:16,583 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:49:18,862 INFO L130 PetriNetUnfolder]: 8704/16732 cut-off events. [2023-08-30 09:49:18,862 INFO L131 PetriNetUnfolder]: For 126685/126685 co-relation queries the response was YES. [2023-08-30 09:49:18,900 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88741 conditions, 16732 events. 8704/16732 cut-off events. For 126685/126685 co-relation queries the response was YES. Maximal size of possible extension queue 520. Compared 135430 event pairs, 2187 based on Foata normal form. 606/17337 useless extension candidates. Maximal degree in co-relation 88701. Up to 6932 conditions per place. [2023-08-30 09:49:18,945 INFO L137 encePairwiseOnDemand]: 258/271 looper letters, 282 selfloop transitions, 148 changer transitions 1/432 dead transitions. [2023-08-30 09:49:18,945 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 432 transitions, 6332 flow [2023-08-30 09:49:18,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-30 09:49:18,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-30 09:49:18,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1160 transitions. [2023-08-30 09:49:18,948 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4756047560475605 [2023-08-30 09:49:18,948 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1160 transitions. [2023-08-30 09:49:18,948 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1160 transitions. [2023-08-30 09:49:18,949 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:49:18,949 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1160 transitions. [2023-08-30 09:49:18,950 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 128.88888888888889) internal successors, (1160), 9 states have internal predecessors, (1160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:49:18,952 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 271.0) internal successors, (2710), 10 states have internal predecessors, (2710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:49:18,953 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 271.0) internal successors, (2710), 10 states have internal predecessors, (2710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:49:18,953 INFO L175 Difference]: Start difference. First operand has 97 places, 204 transitions, 2788 flow. Second operand 9 states and 1160 transitions. [2023-08-30 09:49:18,953 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 432 transitions, 6332 flow [2023-08-30 09:49:19,154 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 432 transitions, 6121 flow, removed 104 selfloop flow, removed 1 redundant places. [2023-08-30 09:49:19,159 INFO L231 Difference]: Finished difference. Result has 109 places, 300 transitions, 4858 flow [2023-08-30 09:49:19,159 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=271, PETRI_DIFFERENCE_MINUEND_FLOW=2660, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=202, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4858, PETRI_PLACES=109, PETRI_TRANSITIONS=300} [2023-08-30 09:49:19,160 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 79 predicate places. [2023-08-30 09:49:19,160 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 300 transitions, 4858 flow [2023-08-30 09:49:19,160 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 118.57142857142857) internal successors, (830), 7 states have internal predecessors, (830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:49:19,160 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:49:19,160 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 09:49:19,160 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-30 09:49:19,161 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-08-30 09:49:19,161 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:49:19,161 INFO L85 PathProgramCache]: Analyzing trace with hash 986208303, now seen corresponding path program 1 times [2023-08-30 09:49:19,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:49:19,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608774141] [2023-08-30 09:49:19,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:49:19,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:49:19,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:49:19,316 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 09:49:19,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:49:19,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [608774141] [2023-08-30 09:49:19,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [608774141] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 09:49:19,317 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 09:49:19,317 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-30 09:49:19,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900776918] [2023-08-30 09:49:19,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 09:49:19,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 09:49:19,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:49:19,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 09:49:19,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-08-30 09:49:19,528 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 271 [2023-08-30 09:49:19,538 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 300 transitions, 4858 flow. Second operand has 7 states, 7 states have (on average 118.57142857142857) internal successors, (830), 7 states have internal predecessors, (830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:49:19,538 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:49:19,538 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 271 [2023-08-30 09:49:19,538 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:49:22,654 INFO L130 PetriNetUnfolder]: 10488/20155 cut-off events. [2023-08-30 09:49:22,654 INFO L131 PetriNetUnfolder]: For 209914/209914 co-relation queries the response was YES. [2023-08-30 09:49:22,878 INFO L83 FinitePrefix]: Finished finitePrefix Result has 123339 conditions, 20155 events. 10488/20155 cut-off events. For 209914/209914 co-relation queries the response was YES. Maximal size of possible extension queue 644. Compared 169340 event pairs, 3020 based on Foata normal form. 110/20264 useless extension candidates. Maximal degree in co-relation 123294. Up to 14860 conditions per place. [2023-08-30 09:49:22,956 INFO L137 encePairwiseOnDemand]: 262/271 looper letters, 291 selfloop transitions, 253 changer transitions 4/549 dead transitions. [2023-08-30 09:49:22,956 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 549 transitions, 9470 flow [2023-08-30 09:49:22,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-30 09:49:22,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-30 09:49:22,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1139 transitions. [2023-08-30 09:49:22,959 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46699466994669947 [2023-08-30 09:49:22,959 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1139 transitions. [2023-08-30 09:49:22,959 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1139 transitions. [2023-08-30 09:49:22,960 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:49:22,960 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1139 transitions. [2023-08-30 09:49:22,962 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 126.55555555555556) internal successors, (1139), 9 states have internal predecessors, (1139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:49:22,964 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 271.0) internal successors, (2710), 10 states have internal predecessors, (2710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:49:22,965 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 271.0) internal successors, (2710), 10 states have internal predecessors, (2710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:49:22,965 INFO L175 Difference]: Start difference. First operand has 109 places, 300 transitions, 4858 flow. Second operand 9 states and 1139 transitions. [2023-08-30 09:49:22,965 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 549 transitions, 9470 flow [2023-08-30 09:49:23,588 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 549 transitions, 9267 flow, removed 100 selfloop flow, removed 1 redundant places. [2023-08-30 09:49:23,595 INFO L231 Difference]: Finished difference. Result has 122 places, 434 transitions, 8178 flow [2023-08-30 09:49:23,596 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=271, PETRI_DIFFERENCE_MINUEND_FLOW=4745, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=300, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=127, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8178, PETRI_PLACES=122, PETRI_TRANSITIONS=434} [2023-08-30 09:49:23,596 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 92 predicate places. [2023-08-30 09:49:23,596 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 434 transitions, 8178 flow [2023-08-30 09:49:23,597 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 118.57142857142857) internal successors, (830), 7 states have internal predecessors, (830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:49:23,597 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:49:23,597 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 09:49:23,597 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-30 09:49:23,597 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-08-30 09:49:23,598 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:49:23,598 INFO L85 PathProgramCache]: Analyzing trace with hash -224897961, now seen corresponding path program 2 times [2023-08-30 09:49:23,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:49:23,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175539673] [2023-08-30 09:49:23,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:49:23,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:49:23,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:49:23,810 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 09:49:23,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:49:23,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175539673] [2023-08-30 09:49:23,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1175539673] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 09:49:23,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2056629206] [2023-08-30 09:49:23,811 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 09:49:23,812 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 09:49:23,812 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 09:49:23,823 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 09:49:23,853 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-30 09:49:23,927 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 09:49:23,927 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 09:49:23,928 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-30 09:49:23,930 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 09:49:23,991 INFO L321 Elim1Store]: treesize reduction 16, result has 63.6 percent of original size [2023-08-30 09:49:23,991 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 43 [2023-08-30 09:49:24,042 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 09:49:24,043 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 09:49:24,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2056629206] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 09:49:24,043 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 09:49:24,043 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 11 [2023-08-30 09:49:24,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921493612] [2023-08-30 09:49:24,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 09:49:24,045 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 09:49:24,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:49:24,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 09:49:24,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2023-08-30 09:49:24,101 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 119 out of 271 [2023-08-30 09:49:24,101 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 434 transitions, 8178 flow. Second operand has 5 states, 5 states have (on average 122.4) internal successors, (612), 5 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:49:24,101 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:49:24,102 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 119 of 271 [2023-08-30 09:49:24,102 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:49:27,748 INFO L130 PetriNetUnfolder]: 11578/22112 cut-off events. [2023-08-30 09:49:27,748 INFO L131 PetriNetUnfolder]: For 304304/304304 co-relation queries the response was YES. [2023-08-30 09:49:27,826 INFO L83 FinitePrefix]: Finished finitePrefix Result has 151142 conditions, 22112 events. 11578/22112 cut-off events. For 304304/304304 co-relation queries the response was YES. Maximal size of possible extension queue 686. Compared 186693 event pairs, 2390 based on Foata normal form. 108/22219 useless extension candidates. Maximal degree in co-relation 151091. Up to 15160 conditions per place. [2023-08-30 09:49:27,911 INFO L137 encePairwiseOnDemand]: 265/271 looper letters, 264 selfloop transitions, 409 changer transitions 0/674 dead transitions. [2023-08-30 09:49:27,912 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 674 transitions, 13677 flow [2023-08-30 09:49:27,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 09:49:27,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 09:49:27,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 652 transitions. [2023-08-30 09:49:27,914 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48118081180811806 [2023-08-30 09:49:27,914 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 652 transitions. [2023-08-30 09:49:27,914 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 652 transitions. [2023-08-30 09:49:27,914 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:49:27,914 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 652 transitions. [2023-08-30 09:49:27,915 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 130.4) internal successors, (652), 5 states have internal predecessors, (652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:49:27,917 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 271.0) internal successors, (1626), 6 states have internal predecessors, (1626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:49:27,917 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 271.0) internal successors, (1626), 6 states have internal predecessors, (1626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:49:27,917 INFO L175 Difference]: Start difference. First operand has 122 places, 434 transitions, 8178 flow. Second operand 5 states and 652 transitions. [2023-08-30 09:49:27,917 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 674 transitions, 13677 flow [2023-08-30 09:49:29,392 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 674 transitions, 13510 flow, removed 82 selfloop flow, removed 1 redundant places. [2023-08-30 09:49:29,401 INFO L231 Difference]: Finished difference. Result has 128 places, 608 transitions, 12952 flow [2023-08-30 09:49:29,401 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=271, PETRI_DIFFERENCE_MINUEND_FLOW=8019, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=434, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=248, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=12952, PETRI_PLACES=128, PETRI_TRANSITIONS=608} [2023-08-30 09:49:29,402 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 98 predicate places. [2023-08-30 09:49:29,402 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 608 transitions, 12952 flow [2023-08-30 09:49:29,402 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 122.4) internal successors, (612), 5 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:49:29,402 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:49:29,402 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 09:49:29,409 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-08-30 09:49:29,606 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-08-30 09:49:29,606 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting workerErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-08-30 09:49:29,607 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:49:29,607 INFO L85 PathProgramCache]: Analyzing trace with hash 1391139318, now seen corresponding path program 4 times [2023-08-30 09:49:29,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:49:29,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425986661] [2023-08-30 09:49:29,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:49:29,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:49:29,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:49:29,720 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 09:49:29,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:49:29,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425986661] [2023-08-30 09:49:29,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [425986661] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 09:49:29,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [866748383] [2023-08-30 09:49:29,721 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-30 09:49:29,721 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 09:49:29,721 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 09:49:29,738 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 09:49:29,739 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-30 09:49:29,800 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-30 09:49:29,800 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 09:49:29,801 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 22 conjunts are in the unsatisfiable core [2023-08-30 09:49:29,802 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 09:49:29,806 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 13 treesize of output 9 [2023-08-30 09:49:29,817 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-30 09:49:29,818 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 09:49:29,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [866748383] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 09:49:29,818 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 09:49:29,818 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2023-08-30 09:49:29,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833952728] [2023-08-30 09:49:29,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 09:49:29,819 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 09:49:29,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:49:29,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 09:49:29,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-08-30 09:49:29,838 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 271 [2023-08-30 09:49:29,838 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 608 transitions, 12952 flow. Second operand has 3 states, 3 states have (on average 129.0) internal successors, (387), 3 states have internal predecessors, (387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:49:29,839 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:49:29,839 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 271 [2023-08-30 09:49:29,839 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:49:30,033 INFO L130 PetriNetUnfolder]: 364/837 cut-off events. [2023-08-30 09:49:30,033 INFO L131 PetriNetUnfolder]: For 10106/10106 co-relation queries the response was YES. [2023-08-30 09:49:30,036 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5120 conditions, 837 events. 364/837 cut-off events. For 10106/10106 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 3894 event pairs, 12 based on Foata normal form. 158/994 useless extension candidates. Maximal degree in co-relation 5075. Up to 751 conditions per place. [2023-08-30 09:49:30,037 INFO L137 encePairwiseOnDemand]: 266/271 looper letters, 36 selfloop transitions, 15 changer transitions 6/58 dead transitions. [2023-08-30 09:49:30,037 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 58 transitions, 716 flow [2023-08-30 09:49:30,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 09:49:30,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 09:49:30,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 400 transitions. [2023-08-30 09:49:30,039 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4920049200492005 [2023-08-30 09:49:30,039 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 400 transitions. [2023-08-30 09:49:30,039 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 400 transitions. [2023-08-30 09:49:30,040 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:49:30,040 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 400 transitions. [2023-08-30 09:49:30,040 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 133.33333333333334) internal successors, (400), 3 states have internal predecessors, (400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:49:30,041 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 271.0) internal successors, (1084), 4 states have internal predecessors, (1084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:49:30,041 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 271.0) internal successors, (1084), 4 states have internal predecessors, (1084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:49:30,041 INFO L175 Difference]: Start difference. First operand has 128 places, 608 transitions, 12952 flow. Second operand 3 states and 400 transitions. [2023-08-30 09:49:30,042 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 58 transitions, 716 flow [2023-08-30 09:49:30,054 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 58 transitions, 509 flow, removed 56 selfloop flow, removed 31 redundant places. [2023-08-30 09:49:30,055 INFO L231 Difference]: Finished difference. Result has 79 places, 46 transitions, 347 flow [2023-08-30 09:49:30,055 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=271, PETRI_DIFFERENCE_MINUEND_FLOW=344, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=347, PETRI_PLACES=79, PETRI_TRANSITIONS=46} [2023-08-30 09:49:30,055 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 49 predicate places. [2023-08-30 09:49:30,055 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 46 transitions, 347 flow [2023-08-30 09:49:30,055 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 129.0) internal successors, (387), 3 states have internal predecessors, (387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:49:30,056 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:49:30,056 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 09:49:30,065 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-08-30 09:49:30,265 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-08-30 09:49:30,265 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-08-30 09:49:30,266 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:49:30,266 INFO L85 PathProgramCache]: Analyzing trace with hash -1151240646, now seen corresponding path program 2 times [2023-08-30 09:49:30,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:49:30,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202619268] [2023-08-30 09:49:30,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:49:30,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:49:30,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:49:30,384 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 09:49:30,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:49:30,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [202619268] [2023-08-30 09:49:30,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [202619268] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 09:49:30,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [216719406] [2023-08-30 09:49:30,385 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 09:49:30,386 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 09:49:30,386 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 09:49:30,389 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 09:49:30,391 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-30 09:49:30,488 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 09:49:30,488 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 09:49:30,489 INFO L263 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 11 conjunts are in the unsatisfiable core [2023-08-30 09:49:30,491 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 09:49:30,521 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 09:49:30,522 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 09:49:30,635 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 09:49:30,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [216719406] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 09:49:30,636 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 09:49:30,636 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 23 [2023-08-30 09:49:30,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799912514] [2023-08-30 09:49:30,636 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 09:49:30,636 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-08-30 09:49:30,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:49:30,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-08-30 09:49:30,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=397, Unknown=0, NotChecked=0, Total=552 [2023-08-30 09:49:30,688 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 271 [2023-08-30 09:49:30,690 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 46 transitions, 347 flow. Second operand has 24 states, 24 states have (on average 123.29166666666667) internal successors, (2959), 24 states have internal predecessors, (2959), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:49:30,690 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:49:30,690 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 271 [2023-08-30 09:49:30,690 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:49:31,158 INFO L130 PetriNetUnfolder]: 500/1316 cut-off events. [2023-08-30 09:49:31,159 INFO L131 PetriNetUnfolder]: For 7372/7372 co-relation queries the response was YES. [2023-08-30 09:49:31,162 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6044 conditions, 1316 events. 500/1316 cut-off events. For 7372/7372 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 6924 event pairs, 29 based on Foata normal form. 192/1508 useless extension candidates. Maximal degree in co-relation 6018. Up to 337 conditions per place. [2023-08-30 09:49:31,165 INFO L137 encePairwiseOnDemand]: 266/271 looper letters, 320 selfloop transitions, 30 changer transitions 76/427 dead transitions. [2023-08-30 09:49:31,165 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 427 transitions, 4135 flow [2023-08-30 09:49:31,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-08-30 09:49:31,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2023-08-30 09:49:31,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 2938 transitions. [2023-08-30 09:49:31,169 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49278765514927875 [2023-08-30 09:49:31,169 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 2938 transitions. [2023-08-30 09:49:31,169 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 2938 transitions. [2023-08-30 09:49:31,170 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:49:31,170 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 2938 transitions. [2023-08-30 09:49:31,174 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 133.54545454545453) internal successors, (2938), 22 states have internal predecessors, (2938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:49:31,179 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 271.0) internal successors, (6233), 23 states have internal predecessors, (6233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:49:31,180 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 271.0) internal successors, (6233), 23 states have internal predecessors, (6233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:49:31,180 INFO L175 Difference]: Start difference. First operand has 79 places, 46 transitions, 347 flow. Second operand 22 states and 2938 transitions. [2023-08-30 09:49:31,180 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 427 transitions, 4135 flow [2023-08-30 09:49:31,188 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 427 transitions, 3437 flow, removed 158 selfloop flow, removed 8 redundant places. [2023-08-30 09:49:31,191 INFO L231 Difference]: Finished difference. Result has 94 places, 64 transitions, 524 flow [2023-08-30 09:49:31,191 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=271, PETRI_DIFFERENCE_MINUEND_FLOW=296, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=524, PETRI_PLACES=94, PETRI_TRANSITIONS=64} [2023-08-30 09:49:31,191 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 64 predicate places. [2023-08-30 09:49:31,191 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 64 transitions, 524 flow [2023-08-30 09:49:31,192 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 123.29166666666667) internal successors, (2959), 24 states have internal predecessors, (2959), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:49:31,192 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:49:31,192 INFO L208 CegarLoopForPetriNet]: trace histogram [11, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 09:49:31,197 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-08-30 09:49:31,397 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 09:49:31,397 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-08-30 09:49:31,397 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:49:31,398 INFO L85 PathProgramCache]: Analyzing trace with hash 987548702, now seen corresponding path program 3 times [2023-08-30 09:49:31,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:49:31,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423852062] [2023-08-30 09:49:31,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:49:31,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:49:31,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:49:31,719 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 09:49:31,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:49:31,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423852062] [2023-08-30 09:49:31,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1423852062] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 09:49:31,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1769604133] [2023-08-30 09:49:31,719 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-30 09:49:31,720 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 09:49:31,720 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 09:49:31,721 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 09:49:31,723 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-30 09:49:31,823 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-08-30 09:49:31,824 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 09:49:31,825 INFO L263 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 42 conjunts are in the unsatisfiable core [2023-08-30 09:49:31,830 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 09:49:31,846 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 14 [2023-08-30 09:49:31,850 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 09:49:31,851 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 09:49:31,939 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 09:49:32,187 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 54 proven. 26 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2023-08-30 09:49:32,187 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 09:49:32,336 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 54 proven. 26 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2023-08-30 09:49:32,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1769604133] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 09:49:32,337 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 09:49:32,337 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 6, 6] total 34 [2023-08-30 09:49:32,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237297237] [2023-08-30 09:49:32,337 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 09:49:32,337 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-08-30 09:49:32,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:49:32,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-08-30 09:49:32,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=202, Invalid=920, Unknown=0, NotChecked=0, Total=1122 [2023-08-30 09:49:33,179 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 271 [2023-08-30 09:49:33,181 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 64 transitions, 524 flow. Second operand has 34 states, 34 states have (on average 113.41176470588235) internal successors, (3856), 34 states have internal predecessors, (3856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:49:33,181 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:49:33,182 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 271 [2023-08-30 09:49:33,182 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:49:34,028 INFO L130 PetriNetUnfolder]: 549/1453 cut-off events. [2023-08-30 09:49:34,028 INFO L131 PetriNetUnfolder]: For 8313/8313 co-relation queries the response was YES. [2023-08-30 09:49:34,031 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6669 conditions, 1453 events. 549/1453 cut-off events. For 8313/8313 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 7547 event pairs, 29 based on Foata normal form. 34/1487 useless extension candidates. Maximal degree in co-relation 6642. Up to 375 conditions per place. [2023-08-30 09:49:34,033 INFO L137 encePairwiseOnDemand]: 259/271 looper letters, 317 selfloop transitions, 88 changer transitions 96/502 dead transitions. [2023-08-30 09:49:34,034 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 502 transitions, 4092 flow [2023-08-30 09:49:34,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2023-08-30 09:49:34,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2023-08-30 09:49:34,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 5337 transitions. [2023-08-30 09:49:34,039 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43763837638376385 [2023-08-30 09:49:34,039 INFO L72 ComplementDD]: Start complementDD. Operand 45 states and 5337 transitions. [2023-08-30 09:49:34,039 INFO L73 IsDeterministic]: Start isDeterministic. Operand 45 states and 5337 transitions. [2023-08-30 09:49:34,040 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:49:34,040 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 45 states and 5337 transitions. [2023-08-30 09:49:34,045 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 46 states, 45 states have (on average 118.6) internal successors, (5337), 45 states have internal predecessors, (5337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:49:34,053 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 46 states, 46 states have (on average 271.0) internal successors, (12466), 46 states have internal predecessors, (12466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:49:34,054 INFO L81 ComplementDD]: Finished complementDD. Result has 46 states, 46 states have (on average 271.0) internal successors, (12466), 46 states have internal predecessors, (12466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:49:34,054 INFO L175 Difference]: Start difference. First operand has 94 places, 64 transitions, 524 flow. Second operand 45 states and 5337 transitions. [2023-08-30 09:49:34,054 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 502 transitions, 4092 flow [2023-08-30 09:49:34,065 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 502 transitions, 3962 flow, removed 50 selfloop flow, removed 9 redundant places. [2023-08-30 09:49:34,068 INFO L231 Difference]: Finished difference. Result has 136 places, 118 transitions, 973 flow [2023-08-30 09:49:34,068 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=271, PETRI_DIFFERENCE_MINUEND_FLOW=444, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=45, PETRI_FLOW=973, PETRI_PLACES=136, PETRI_TRANSITIONS=118} [2023-08-30 09:49:34,068 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 106 predicate places. [2023-08-30 09:49:34,068 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 118 transitions, 973 flow [2023-08-30 09:49:34,069 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 113.41176470588235) internal successors, (3856), 34 states have internal predecessors, (3856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:49:34,069 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:49:34,069 INFO L208 CegarLoopForPetriNet]: trace histogram [12, 11, 9, 9, 3, 3, 3, 3, 1, 1, 1, 1] [2023-08-30 09:49:34,082 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-08-30 09:49:34,273 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 09:49:34,274 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-08-30 09:49:34,274 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:49:34,274 INFO L85 PathProgramCache]: Analyzing trace with hash 1777636148, now seen corresponding path program 4 times [2023-08-30 09:49:34,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:49:34,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852609391] [2023-08-30 09:49:34,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:49:34,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:49:34,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:49:34,618 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 0 proven. 243 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 09:49:34,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:49:34,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852609391] [2023-08-30 09:49:34,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1852609391] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 09:49:34,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1714810026] [2023-08-30 09:49:34,619 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-30 09:49:34,619 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 09:49:34,619 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 09:49:34,620 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 09:49:34,645 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-08-30 09:49:34,788 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-30 09:49:34,788 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 09:49:34,790 INFO L263 TraceCheckSpWp]: Trace formula consists of 517 conjuncts, 25 conjunts are in the unsatisfiable core [2023-08-30 09:49:34,791 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 09:49:34,862 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 0 proven. 243 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 09:49:34,862 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 09:49:35,303 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 0 proven. 243 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 09:49:35,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1714810026] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 09:49:35,303 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 09:49:35,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 51 [2023-08-30 09:49:35,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186174917] [2023-08-30 09:49:35,303 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 09:49:35,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2023-08-30 09:49:35,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:49:35,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2023-08-30 09:49:35,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=701, Invalid=1951, Unknown=0, NotChecked=0, Total=2652 [2023-08-30 09:49:35,405 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 271 [2023-08-30 09:49:35,408 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 118 transitions, 973 flow. Second operand has 52 states, 52 states have (on average 123.28846153846153) internal successors, (6411), 52 states have internal predecessors, (6411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:49:35,408 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:49:35,408 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 271 [2023-08-30 09:49:35,408 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:49:36,866 INFO L130 PetriNetUnfolder]: 1134/3052 cut-off events. [2023-08-30 09:49:36,867 INFO L131 PetriNetUnfolder]: For 40415/40415 co-relation queries the response was YES. [2023-08-30 09:49:36,881 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13817 conditions, 3052 events. 1134/3052 cut-off events. For 40415/40415 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 16818 event pairs, 29 based on Foata normal form. 416/3468 useless extension candidates. Maximal degree in co-relation 13783. Up to 791 conditions per place. [2023-08-30 09:49:36,890 INFO L137 encePairwiseOnDemand]: 266/271 looper letters, 755 selfloop transitions, 75 changer transitions 188/1019 dead transitions. [2023-08-30 09:49:36,890 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 1019 transitions, 9068 flow [2023-08-30 09:49:36,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2023-08-30 09:49:36,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2023-08-30 09:49:36,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 6697 transitions. [2023-08-30 09:49:36,898 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49424354243542434 [2023-08-30 09:49:36,898 INFO L72 ComplementDD]: Start complementDD. Operand 50 states and 6697 transitions. [2023-08-30 09:49:36,898 INFO L73 IsDeterministic]: Start isDeterministic. Operand 50 states and 6697 transitions. [2023-08-30 09:49:36,901 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:49:36,901 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 50 states and 6697 transitions. [2023-08-30 09:49:36,910 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 51 states, 50 states have (on average 133.94) internal successors, (6697), 50 states have internal predecessors, (6697), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:49:36,921 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 51 states, 51 states have (on average 271.0) internal successors, (13821), 51 states have internal predecessors, (13821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:49:36,922 INFO L81 ComplementDD]: Finished complementDD. Result has 51 states, 51 states have (on average 271.0) internal successors, (13821), 51 states have internal predecessors, (13821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:49:36,922 INFO L175 Difference]: Start difference. First operand has 136 places, 118 transitions, 973 flow. Second operand 50 states and 6697 transitions. [2023-08-30 09:49:36,922 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 1019 transitions, 9068 flow [2023-08-30 09:49:36,955 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 1019 transitions, 8938 flow, removed 30 selfloop flow, removed 23 redundant places. [2023-08-30 09:49:36,963 INFO L231 Difference]: Finished difference. Result has 175 places, 157 transitions, 1454 flow [2023-08-30 09:49:36,964 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=271, PETRI_DIFFERENCE_MINUEND_FLOW=869, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=50, PETRI_FLOW=1454, PETRI_PLACES=175, PETRI_TRANSITIONS=157} [2023-08-30 09:49:36,964 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 145 predicate places. [2023-08-30 09:49:36,964 INFO L495 AbstractCegarLoop]: Abstraction has has 175 places, 157 transitions, 1454 flow [2023-08-30 09:49:36,965 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 123.28846153846153) internal successors, (6411), 52 states have internal predecessors, (6411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:49:36,965 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:49:36,966 INFO L208 CegarLoopForPetriNet]: trace histogram [25, 24, 22, 22, 3, 3, 3, 3, 1, 1, 1, 1] [2023-08-30 09:49:36,971 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-08-30 09:49:37,171 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 09:49:37,172 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-08-30 09:49:37,172 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:49:37,172 INFO L85 PathProgramCache]: Analyzing trace with hash -1160580830, now seen corresponding path program 5 times [2023-08-30 09:49:37,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:49:37,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [729170869] [2023-08-30 09:49:37,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:49:37,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:49:37,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:49:38,469 INFO L134 CoverageAnalysis]: Checked inductivity of 1140 backedges. 0 proven. 1140 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 09:49:38,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:49:38,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [729170869] [2023-08-30 09:49:38,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [729170869] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 09:49:38,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [202820030] [2023-08-30 09:49:38,469 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-30 09:49:38,469 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 09:49:38,469 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 09:49:38,471 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 09:49:38,474 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-08-30 09:49:38,909 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 23 check-sat command(s) [2023-08-30 09:49:38,909 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 09:49:38,912 INFO L263 TraceCheckSpWp]: Trace formula consists of 933 conjuncts, 51 conjunts are in the unsatisfiable core [2023-08-30 09:49:38,916 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 09:49:39,049 INFO L134 CoverageAnalysis]: Checked inductivity of 1140 backedges. 0 proven. 1140 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 09:49:39,050 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 09:49:40,661 INFO L134 CoverageAnalysis]: Checked inductivity of 1140 backedges. 0 proven. 1140 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 09:49:40,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [202820030] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 09:49:40,662 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 09:49:40,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 51, 51] total 103 [2023-08-30 09:49:40,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451873625] [2023-08-30 09:49:40,662 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 09:49:40,662 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 104 states [2023-08-30 09:49:40,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:49:40,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 104 interpolants. [2023-08-30 09:49:40,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2755, Invalid=7957, Unknown=0, NotChecked=0, Total=10712 [2023-08-30 09:49:40,873 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 271 [2023-08-30 09:49:40,879 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 157 transitions, 1454 flow. Second operand has 104 states, 104 states have (on average 123.14423076923077) internal successors, (12807), 104 states have internal predecessors, (12807), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:49:40,879 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:49:40,879 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 271 [2023-08-30 09:49:40,880 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:49:45,410 INFO L130 PetriNetUnfolder]: 2304/6250 cut-off events. [2023-08-30 09:49:45,411 INFO L131 PetriNetUnfolder]: For 288184/288184 co-relation queries the response was YES. [2023-08-30 09:49:45,437 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30180 conditions, 6250 events. 2304/6250 cut-off events. For 288184/288184 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 35210 event pairs, 29 based on Foata normal form. 832/7082 useless extension candidates. Maximal degree in co-relation 30132. Up to 1623 conditions per place. [2023-08-30 09:49:45,455 INFO L137 encePairwiseOnDemand]: 266/271 looper letters, 1561 selfloop transitions, 153 changer transitions 396/2111 dead transitions. [2023-08-30 09:49:45,455 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 276 places, 2111 transitions, 18961 flow [2023-08-30 09:49:45,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2023-08-30 09:49:45,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2023-08-30 09:49:45,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 13678 transitions. [2023-08-30 09:49:45,504 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49482671297301206 [2023-08-30 09:49:45,504 INFO L72 ComplementDD]: Start complementDD. Operand 102 states and 13678 transitions. [2023-08-30 09:49:45,505 INFO L73 IsDeterministic]: Start isDeterministic. Operand 102 states and 13678 transitions. [2023-08-30 09:49:45,508 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:49:45,508 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 102 states and 13678 transitions. [2023-08-30 09:49:45,525 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 103 states, 102 states have (on average 134.09803921568627) internal successors, (13678), 102 states have internal predecessors, (13678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:49:45,544 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 103 states, 103 states have (on average 271.0) internal successors, (27913), 103 states have internal predecessors, (27913), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:49:45,547 INFO L81 ComplementDD]: Finished complementDD. Result has 103 states, 103 states have (on average 271.0) internal successors, (27913), 103 states have internal predecessors, (27913), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:49:45,547 INFO L175 Difference]: Start difference. First operand has 175 places, 157 transitions, 1454 flow. Second operand 102 states and 13678 transitions. [2023-08-30 09:49:45,547 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 276 places, 2111 transitions, 18961 flow [2023-08-30 09:49:45,731 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 252 places, 2111 transitions, 18430 flow, removed 226 selfloop flow, removed 24 redundant places. [2023-08-30 09:49:45,746 INFO L231 Difference]: Finished difference. Result has 278 places, 235 transitions, 2249 flow [2023-08-30 09:49:45,746 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=271, PETRI_DIFFERENCE_MINUEND_FLOW=1183, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=102, PETRI_FLOW=2249, PETRI_PLACES=278, PETRI_TRANSITIONS=235} [2023-08-30 09:49:45,747 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 248 predicate places. [2023-08-30 09:49:45,747 INFO L495 AbstractCegarLoop]: Abstraction has has 278 places, 235 transitions, 2249 flow [2023-08-30 09:49:45,749 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 104 states, 104 states have (on average 123.14423076923077) internal successors, (12807), 104 states have internal predecessors, (12807), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:49:45,749 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:49:45,749 INFO L208 CegarLoopForPetriNet]: trace histogram [51, 50, 48, 48, 3, 3, 3, 3, 1, 1, 1, 1] [2023-08-30 09:49:45,756 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-08-30 09:49:45,956 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2023-08-30 09:49:45,957 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-08-30 09:49:45,957 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:49:45,957 INFO L85 PathProgramCache]: Analyzing trace with hash -789791746, now seen corresponding path program 6 times [2023-08-30 09:49:45,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:49:45,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261595106] [2023-08-30 09:49:45,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:49:45,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:49:46,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:49:50,799 INFO L134 CoverageAnalysis]: Checked inductivity of 4962 backedges. 0 proven. 4962 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 09:49:50,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:49:50,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1261595106] [2023-08-30 09:49:50,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1261595106] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 09:49:50,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1790056993] [2023-08-30 09:49:50,800 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-30 09:49:50,800 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 09:49:50,801 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 09:49:50,801 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 09:49:50,803 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-08-30 09:49:51,208 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2023-08-30 09:49:51,209 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 09:49:51,212 INFO L263 TraceCheckSpWp]: Trace formula consists of 485 conjuncts, 72 conjunts are in the unsatisfiable core [2023-08-30 09:49:51,217 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 09:49:51,229 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 14 [2023-08-30 09:49:51,232 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 09:49:51,233 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 09:49:51,456 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 09:49:51,682 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 09:49:51,851 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 09:49:52,805 INFO L134 CoverageAnalysis]: Checked inductivity of 4962 backedges. 97 proven. 447 refuted. 0 times theorem prover too weak. 4418 trivial. 0 not checked. [2023-08-30 09:49:52,805 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 09:49:53,817 INFO L134 CoverageAnalysis]: Checked inductivity of 4962 backedges. 97 proven. 447 refuted. 0 times theorem prover too weak. 4418 trivial. 0 not checked. [2023-08-30 09:49:53,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1790056993] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 09:49:53,817 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 09:49:53,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [103, 12, 12] total 126 [2023-08-30 09:49:53,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165265953] [2023-08-30 09:49:53,818 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 09:49:53,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 126 states [2023-08-30 09:49:53,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:49:53,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 126 interpolants. [2023-08-30 09:49:53,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2951, Invalid=12799, Unknown=0, NotChecked=0, Total=15750 [2023-08-30 09:49:56,576 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 271 [2023-08-30 09:49:56,583 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 278 places, 235 transitions, 2249 flow. Second operand has 126 states, 126 states have (on average 112.11904761904762) internal successors, (14127), 126 states have internal predecessors, (14127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:49:56,583 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:49:56,583 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 271 [2023-08-30 09:49:56,583 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:50:05,362 INFO L130 PetriNetUnfolder]: 2357/6401 cut-off events. [2023-08-30 09:50:05,362 INFO L131 PetriNetUnfolder]: For 109617/109617 co-relation queries the response was YES. [2023-08-30 09:50:05,406 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31530 conditions, 6401 events. 2357/6401 cut-off events. For 109617/109617 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 35515 event pairs, 30 based on Foata normal form. 36/6437 useless extension candidates. Maximal degree in co-relation 31457. Up to 1667 conditions per place. [2023-08-30 09:50:05,424 INFO L137 encePairwiseOnDemand]: 259/271 looper letters, 1423 selfloop transitions, 390 changer transitions 440/2254 dead transitions. [2023-08-30 09:50:05,425 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 460 places, 2254 transitions, 19922 flow [2023-08-30 09:50:05,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 183 states. [2023-08-30 09:50:05,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 183 states. [2023-08-30 09:50:05,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 21602 transitions. [2023-08-30 09:50:05,439 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43558566733208315 [2023-08-30 09:50:05,440 INFO L72 ComplementDD]: Start complementDD. Operand 183 states and 21602 transitions. [2023-08-30 09:50:05,440 INFO L73 IsDeterministic]: Start isDeterministic. Operand 183 states and 21602 transitions. [2023-08-30 09:50:05,444 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:50:05,445 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 183 states and 21602 transitions. [2023-08-30 09:50:05,462 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 184 states, 183 states have (on average 118.04371584699453) internal successors, (21602), 183 states have internal predecessors, (21602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:50:05,488 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 184 states, 184 states have (on average 271.0) internal successors, (49864), 184 states have internal predecessors, (49864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:50:05,496 INFO L81 ComplementDD]: Finished complementDD. Result has 184 states, 184 states have (on average 271.0) internal successors, (49864), 184 states have internal predecessors, (49864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:50:05,496 INFO L175 Difference]: Start difference. First operand has 278 places, 235 transitions, 2249 flow. Second operand 183 states and 21602 transitions. [2023-08-30 09:50:05,496 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 460 places, 2254 transitions, 19922 flow [2023-08-30 09:50:05,693 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 411 places, 2254 transitions, 19484 flow, removed 136 selfloop flow, removed 49 redundant places. [2023-08-30 09:50:05,706 INFO L231 Difference]: Finished difference. Result has 428 places, 424 transitions, 4101 flow [2023-08-30 09:50:05,706 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=271, PETRI_DIFFERENCE_MINUEND_FLOW=1833, PETRI_DIFFERENCE_MINUEND_PLACES=229, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=201, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=183, PETRI_FLOW=4101, PETRI_PLACES=428, PETRI_TRANSITIONS=424} [2023-08-30 09:50:05,707 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 398 predicate places. [2023-08-30 09:50:05,707 INFO L495 AbstractCegarLoop]: Abstraction has has 428 places, 424 transitions, 4101 flow [2023-08-30 09:50:05,708 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 126 states, 126 states have (on average 112.11904761904762) internal successors, (14127), 126 states have internal predecessors, (14127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:50:05,709 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:50:05,709 INFO L208 CegarLoopForPetriNet]: trace histogram [52, 51, 51, 51, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 09:50:05,716 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-08-30 09:50:05,914 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2023-08-30 09:50:05,915 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-08-30 09:50:05,915 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:50:05,915 INFO L85 PathProgramCache]: Analyzing trace with hash 1584149825, now seen corresponding path program 1 times [2023-08-30 09:50:05,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:50:05,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343626453] [2023-08-30 09:50:05,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:50:05,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:50:06,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:50:06,920 INFO L134 CoverageAnalysis]: Checked inductivity of 5253 backedges. 446 proven. 4 refuted. 0 times theorem prover too weak. 4803 trivial. 0 not checked. [2023-08-30 09:50:06,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:50:06,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343626453] [2023-08-30 09:50:06,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [343626453] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 09:50:06,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [536350781] [2023-08-30 09:50:06,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:50:06,921 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 09:50:06,921 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 09:50:06,937 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 09:50:06,949 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-08-30 09:50:07,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:50:07,288 INFO L263 TraceCheckSpWp]: Trace formula consists of 1828 conjuncts, 105 conjunts are in the unsatisfiable core [2023-08-30 09:50:07,293 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 09:50:09,858 INFO L134 CoverageAnalysis]: Checked inductivity of 5253 backedges. 0 proven. 5253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 09:50:09,858 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 09:50:15,362 INFO L134 CoverageAnalysis]: Checked inductivity of 5253 backedges. 0 proven. 5253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 09:50:15,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [536350781] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 09:50:15,362 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 09:50:15,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 105, 105] total 220 [2023-08-30 09:50:15,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868988957] [2023-08-30 09:50:15,363 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 09:50:15,363 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 220 states [2023-08-30 09:50:15,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:50:15,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 220 interpolants. [2023-08-30 09:50:15,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11162, Invalid=37018, Unknown=0, NotChecked=0, Total=48180 [2023-08-30 09:50:20,578 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 271 [2023-08-30 09:50:20,587 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 428 places, 424 transitions, 4101 flow. Second operand has 220 states, 220 states have (on average 106.10454545454546) internal successors, (23343), 220 states have internal predecessors, (23343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:50:20,587 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:50:20,587 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 271 [2023-08-30 09:50:20,587 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:52:54,869 INFO L130 PetriNetUnfolder]: 5674/15186 cut-off events. [2023-08-30 09:52:54,869 INFO L131 PetriNetUnfolder]: For 2800099/2800099 co-relation queries the response was YES. [2023-08-30 09:52:54,958 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74337 conditions, 15186 events. 5674/15186 cut-off events. For 2800099/2800099 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 84212 event pairs, 11 based on Foata normal form. 2118/17304 useless extension candidates. Maximal degree in co-relation 74247. Up to 3981 conditions per place. [2023-08-30 09:52:55,002 INFO L137 encePairwiseOnDemand]: 256/271 looper letters, 2710 selfloop transitions, 3220 changer transitions 1039/6970 dead transitions. [2023-08-30 09:52:55,002 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1786 places, 6970 transitions, 68752 flow [2023-08-30 09:52:55,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 1359 states. [2023-08-30 09:52:55,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1359 states. [2023-08-30 09:52:55,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1359 states to 1359 states and 147425 transitions. [2023-08-30 09:52:55,291 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40029704932810917 [2023-08-30 09:52:55,291 INFO L72 ComplementDD]: Start complementDD. Operand 1359 states and 147425 transitions. [2023-08-30 09:52:55,291 INFO L73 IsDeterministic]: Start isDeterministic. Operand 1359 states and 147425 transitions. [2023-08-30 09:52:55,312 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:52:55,312 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 1359 states and 147425 transitions. [2023-08-30 09:52:55,420 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 1360 states, 1359 states have (on average 108.48050036791759) internal successors, (147425), 1359 states have internal predecessors, (147425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:52:55,632 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 1360 states, 1360 states have (on average 271.0) internal successors, (368560), 1360 states have internal predecessors, (368560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:52:55,686 INFO L81 ComplementDD]: Finished complementDD. Result has 1360 states, 1360 states have (on average 271.0) internal successors, (368560), 1360 states have internal predecessors, (368560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:52:55,686 INFO L175 Difference]: Start difference. First operand has 428 places, 424 transitions, 4101 flow. Second operand 1359 states and 147425 transitions. [2023-08-30 09:52:55,686 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1786 places, 6970 transitions, 68752 flow [2023-08-30 09:52:56,422 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1670 places, 6970 transitions, 66530 flow, removed 66 selfloop flow, removed 116 redundant places. [2023-08-30 09:52:56,479 INFO L231 Difference]: Finished difference. Result has 2192 places, 3351 transitions, 41531 flow [2023-08-30 09:52:56,480 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=271, PETRI_DIFFERENCE_MINUEND_FLOW=3274, PETRI_DIFFERENCE_MINUEND_PLACES=312, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=422, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=398, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=1359, PETRI_FLOW=41531, PETRI_PLACES=2192, PETRI_TRANSITIONS=3351} [2023-08-30 09:52:56,480 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 2162 predicate places. [2023-08-30 09:52:56,480 INFO L495 AbstractCegarLoop]: Abstraction has has 2192 places, 3351 transitions, 41531 flow [2023-08-30 09:52:56,483 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 220 states, 220 states have (on average 106.10454545454546) internal successors, (23343), 220 states have internal predecessors, (23343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:52:56,483 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:52:56,483 INFO L208 CegarLoopForPetriNet]: trace histogram [105, 104, 103, 103, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 09:52:56,491 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-08-30 09:52:56,690 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2023-08-30 09:52:56,691 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-08-30 09:52:56,691 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:52:56,691 INFO L85 PathProgramCache]: Analyzing trace with hash -199603345, now seen corresponding path program 2 times [2023-08-30 09:52:56,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:52:56,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114874584] [2023-08-30 09:52:56,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:52:56,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:52:57,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:53:12,944 INFO L134 CoverageAnalysis]: Checked inductivity of 21636 backedges. 0 proven. 21636 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 09:53:12,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:53:12,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114874584] [2023-08-30 09:53:12,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2114874584] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 09:53:12,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1744686459] [2023-08-30 09:53:12,945 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 09:53:12,945 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 09:53:12,945 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 09:53:12,946 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 09:53:12,948 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-08-30 09:53:13,575 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 09:53:13,575 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 09:53:13,593 INFO L263 TraceCheckSpWp]: Trace formula consists of 3534 conjuncts, 211 conjunts are in the unsatisfiable core [2023-08-30 09:53:13,600 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 09:53:14,026 INFO L134 CoverageAnalysis]: Checked inductivity of 21636 backedges. 0 proven. 21636 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 09:53:14,026 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 09:53:33,077 INFO L134 CoverageAnalysis]: Checked inductivity of 21636 backedges. 0 proven. 21636 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 09:53:33,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1744686459] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 09:53:33,078 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 09:53:33,078 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [211, 211, 211] total 423 [2023-08-30 09:53:33,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937161157] [2023-08-30 09:53:33,079 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 09:53:33,080 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 424 states [2023-08-30 09:53:33,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:53:33,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 424 interpolants. [2023-08-30 09:53:33,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45155, Invalid=134197, Unknown=0, NotChecked=0, Total=179352 [2023-08-30 09:53:35,650 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 271 [2023-08-30 09:53:35,666 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 2192 places, 3351 transitions, 41531 flow. Second operand has 424 states, 424 states have (on average 123.05896226415095) internal successors, (52177), 424 states have internal predecessors, (52177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:53:35,666 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:53:35,666 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 271 [2023-08-30 09:53:35,666 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:58:37,606 INFO L130 PetriNetUnfolder]: 10968/30090 cut-off events. [2023-08-30 09:58:37,606 INFO L131 PetriNetUnfolder]: For 236427145/236427145 co-relation queries the response was YES. [2023-08-30 09:58:39,024 INFO L83 FinitePrefix]: Finished finitePrefix Result has 545793 conditions, 30090 events. 10968/30090 cut-off events. For 236427145/236427145 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 172436 event pairs, 35 based on Foata normal form. 4028/34118 useless extension candidates. Maximal degree in co-relation 545181. Up to 7991 conditions per place. [2023-08-30 09:58:39,142 INFO L137 encePairwiseOnDemand]: 266/271 looper letters, 7779 selfloop transitions, 1891 changer transitions 1681/11352 dead transitions. [2023-08-30 09:58:39,143 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 2613 places, 11352 transitions, 349947 flow [2023-08-30 09:58:39,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 422 states. [2023-08-30 09:58:39,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 422 states. [2023-08-30 09:58:39,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 422 states to 422 states and 56636 transitions. [2023-08-30 09:58:39,183 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.495234431017296 [2023-08-30 09:58:39,183 INFO L72 ComplementDD]: Start complementDD. Operand 422 states and 56636 transitions. [2023-08-30 09:58:39,183 INFO L73 IsDeterministic]: Start isDeterministic. Operand 422 states and 56636 transitions. [2023-08-30 09:58:39,194 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:58:39,194 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 422 states and 56636 transitions. [2023-08-30 09:58:39,245 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 423 states, 422 states have (on average 134.20853080568722) internal successors, (56636), 422 states have internal predecessors, (56636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:58:39,333 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 423 states, 423 states have (on average 271.0) internal successors, (114633), 423 states have internal predecessors, (114633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:58:39,353 INFO L81 ComplementDD]: Finished complementDD. Result has 423 states, 423 states have (on average 271.0) internal successors, (114633), 423 states have internal predecessors, (114633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:58:39,354 INFO L175 Difference]: Start difference. First operand has 2192 places, 3351 transitions, 41531 flow. Second operand 422 states and 56636 transitions. [2023-08-30 09:58:39,354 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 2613 places, 11352 transitions, 349947 flow Killed by 15